CN220085243U - Image forming apparatus, developing cartridge thereof, and urging assembly - Google Patents

Abstract

The utility model discloses an imaging device and a developing box and a forced pushing assembly thereof, wherein the forced pushing assembly comprises a stress piece and an elastic piece, the stress piece is rotationally connected to a frame of the developing box, and the elastic piece is connected between the stress piece and the frame; the forced pushing component has simple structure, convenient use and higher working stability; when the printing device works, the stress piece is acted by the imaging equipment and moves from the first position to the second position, so that the developing roller is driven to contact the photosensitive drum, printing work is realized, and at the moment, the elastic piece is stretched; when the device does not work, the stress piece is not subjected to the acting force of the imaging equipment, and returns to the first position from the second position under the action of the restoring force of the elastic piece, so that the separation of the developing roller and the photosensitive drum is ensured, and the service lives of the developing roller and the photosensitive drum are ensured.

Description

Image forming apparatus, developing cartridge thereof, and urging assembly

Technical Field

The utility model relates to the technical field of imaging equipment, in particular to imaging equipment, a developing box and a forced pushing assembly thereof.

Background

The developing box is widely applied to imaging equipment such as printing equipment, in order to improve the service life of developing roller and photosensitive drum, often be provided with on the developing box and compel the subassembly, during operation, compel the subassembly atress and drive the developing roller and rotate for developing roller and photosensitive drum contact, during non-operation, compel the subassembly and drive the developing roller and rotate, make developing roller and photosensitive drum separation. The structure of the existing forced pushing assembly is complex, and the forced pushing assembly is easy to lose efficacy due to frequent actions of the forced pushing assembly when the forced pushing assembly is used for a long time, so that the developing roller and the photosensitive drum cannot be normally separated when the forced pushing assembly does not work, and the service life is reduced.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model aims to provide the forced pushing assembly, which can improve the working stability of the forced pushing assembly, ensure that the developing roller and the photosensitive drum can be normally separated when not working, and ensure the service lives of the developing roller and the photosensitive drum.

In order to solve the problems, the technical scheme adopted by the utility model is as follows: the forced pushing assembly comprises a stressed piece and an elastic piece, wherein the stressed piece is rotationally connected to a frame of the developing box, and the elastic piece is connected between the stressed piece and the frame; when the imaging equipment works, the stress piece is acted by the imaging equipment, the stress piece moves from a first position to a second position, and the elastic piece is stretched; when the imaging equipment does not work, the stress piece is not acted by the imaging equipment, the stress piece moves from the second position to the first position, and the elastic piece is restored to the original state.

Compared with the prior art, the utility model has the beneficial effects that: the forced pushing component has simple structure, convenient use and higher working stability; when the printing device works, the stress piece is acted by the imaging equipment and moves from the first position to the second position, so that the developing roller is driven to contact the photosensitive drum, printing work is realized, and at the moment, the elastic piece is stretched; when the device does not work, the stress piece is not subjected to the acting force of the imaging equipment, and returns to the first position from the second position under the action of the restoring force of the elastic piece, so that the separation of the developing roller and the photosensitive drum is ensured, and the service lives of the developing roller and the photosensitive drum are ensured.

The forced pushing assembly is characterized in that the elastic piece is a tension spring, the stress piece and the frame are provided with fixing columns, two ends of the tension spring are provided with sleeving parts, and the sleeving parts are sleeved on the fixing columns.

The forced pushing assembly is characterized in that the stress piece is provided with a limiting structure.

In the above-mentioned forced pushing assembly, the force receiving part is disposed at one end of the force receiving part protruding from the frame, and the force receiving part is used for contacting with the imaging device and receiving the force of the imaging device.

The utility model also provides a developing box, which comprises a frame, a developing roller arranged on the frame and the forced pushing assembly; when the stress piece is positioned at the first position, the developing roller is separated from the photosensitive drum of the imaging equipment; when the force receiving member is positioned at the second position, the developing roller is in contact with the photosensitive drum of the image forming apparatus. The developing box adopts the pushing component, and at least has all the beneficial effects brought by the pushing component.

The developing cartridge comprises a frame body and a side cover connected with the frame body, wherein one end of the elastic piece is connected with the stress piece, and the other end of the elastic piece is connected with the frame body or the side cover.

In the developing box, the forced pushing components are provided with two groups, and the two groups of forced pushing components are respectively arranged at two ends of the frame.

The utility model also provides image forming equipment comprising the pushing component or the developing box. Since the image forming apparatus employs the above-described urging assembly or the above-described developing cartridge, it has at least all the advantageous effects that the above-described urging assembly or developing cartridge can bring.

The utility model is described in further detail below with reference to the drawings and the detailed description.

Drawings

FIG. 1 is a schematic diagram of a pushing assembly according to an embodiment of the present utility model;

FIG. 2 is a schematic structural view of a force-bearing member according to an embodiment of the present utility model;

FIG. 3 is a second schematic diagram of a pushing assembly according to an embodiment of the present utility model;

fig. 4 is a schematic structural view of a developing cartridge according to an embodiment of the present utility model.

Reference numerals illustrate: 100 stress parts, 110 force receiving parts, 120 limiting structures, 200 elastic parts, 300 frames, 310 rotating shafts, 400 fixing columns, 500 driving structures, 600 ink boxes and 700 developing rollers.

Detailed Description

Referring to fig. 1 to 3, an embodiment of the present utility model provides a push assembly including a force receiving member 100 and an elastic member 200, wherein the force receiving member 100 is rotatably coupled to a frame 300 of a developing cartridge, and the elastic member 200 is coupled between the force receiving member 100 and the frame 300; when the imaging device works, the stress piece 100 is acted by the imaging device, the stress piece 100 moves from the first position to the second position, the elastic piece 200 is stretched, and the developing roller 700 and the photosensitive drum are changed from a separation state to a contact state; when the image forming apparatus is not in operation, the force receiving member 100 is not acted by the image forming apparatus, the force receiving member 100 moves from the second position to the first position, the elastic member 200 is restored, and the developing roller 700 and the photosensitive drum are changed from the contact state to the separation state.

Compared with the prior art, the forced pushing assembly is simple in structure, convenient to use and high in working stability; when the printing machine works, the stress piece 100 is acted by the imaging equipment and moves from the first position to the second position, so that the developing roller 700 is driven to contact with the photosensitive drum to realize printing, and at the moment, the elastic piece 200 is stretched; when the device is not in operation, the stress member 100 is not acted by the acting force of the imaging device, and under the action of the restoring force of the elastic member 200, the stress member 100 returns to the first position from the second position, so that the separation of the developing roller 700 from the photosensitive drum is ensured, and the service lives of the developing roller 700 and the photosensitive drum are ensured.

Further, a rotating shaft 310 is arranged on the frame 300, the stress piece 100 is connected to the rotating shaft 310, the elastic piece 200 is a tension spring, fixing columns 400 are arranged on the stress piece 100 and the frame 300, sleeving parts are arranged at two ends of the tension spring, and the sleeving parts are sleeved on the fixing columns 400. The sleeve joint part can be a clamping ring or a hanging hook, and the two ends of the tension spring are fixedly connected to the fixing column 400 through the sleeve joint part, so that the tension spring can not fall off or deviate even if the developing roller 700 is frequently contacted with or separated from the photosensitive drum, the stable operation of the forced pushing component can be ensured, the stable contact and separation of the developing roller 700 and the photosensitive drum are ensured, and the service lives of the developing roller 700 and the photosensitive drum are ensured. Further, the force-receiving member 100 is provided with a limiting structure 120, which can limit the rotation range of the force-receiving member 100, so as to avoid the overlarge rotation range of the force-receiving member 100. Specifically, one end of the force receiving member 100 protruding from the frame 300 is provided with a force receiving portion 110, and the force receiving portion 110 is configured to contact with and receive a force of the image forming apparatus. Specifically, the force receiving portion 110 is a U-shaped groove, and can contact with a corresponding portion of the imaging device, so as to receive force of the imaging device.

Referring to fig. 4, an embodiment of the present utility model further provides a developing cartridge, including a frame 300, an ink cartridge 600 disposed on the frame 300, a developing roller 700, a driving structure 500 for driving the developing roller 700 to rotate, and the above-mentioned pushing assembly; when the force receiving member 100 is located at the first position, the developing roller 700 is separated from the photosensitive drum of the image forming apparatus; when the force receiving member 100 is located at the second position, the developing roller 700 contacts the photosensitive drum of the image forming apparatus. The developing box adopts the pushing component, and at least has all the beneficial effects brought by the pushing component. In operation, the driving structure 500 may be coupled to a power source of the image forming apparatus to drive the developing roller 700 to rotate.

Further, the frame 300 includes a frame body and a side cover coupled to the frame body, and the elastic member 200 has one end coupled to the stress member 100 and the other end coupled to the frame body or the side cover. The pushing components can be arranged in one group or two groups, and when the pushing components are arranged in two groups, the two groups of pushing components are respectively arranged at two ends of the frame 300. It will be appreciated that the two sets of push assemblies may be symmetrically disposed or asymmetrically disposed. For example, the elastic members 200 in the two sets of pushing members may be connected to the frame body or the side cover at the same time, or one set of pushing members may be connected to the frame body, and the other set of pushing members may be connected to the side cover.

Embodiments of the present utility model also provide an image forming apparatus including the above-described urging assembly or including the above-described developing cartridge. Since the image forming apparatus employs the above-described urging assembly or the above-described developing cartridge, it has at least all the advantageous effects that the above-described urging assembly or developing cartridge can bring.

In the present utility model, the developing roller 700, the ink cartridge 600 and the driving structure 500 are all common knowledge in the art, and the specific structure thereof is not described herein.

It should be noted that, in the description of the present utility model, if an azimuth or positional relationship is referred to, for example, upper, lower, front, rear, left, right, etc., the azimuth or positional relationship is based on the azimuth or positional relationship shown in the drawings, it is merely for convenience of describing the present utility model and simplifying the description, and it is not indicated or implied that the referred device or element must have a specific azimuth, be configured or operated in a specific azimuth, and should not be construed as limiting the present utility model.

In the description of the present utility model, a plurality means one or more, and a plurality means two or more, and it is understood that greater than, less than, exceeding, etc. does not include the present number, and it is understood that greater than, less than, within, etc. include the present number. If any, first or second, etc. are described for the purpose of distinguishing between technical features only and not for the purpose of indicating or implying a relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

The above embodiments are only preferred embodiments of the present utility model, and the scope of the present utility model is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present utility model are intended to be within the scope of the present utility model as claimed.

Claims (8)

1. A push assembly comprising a force-bearing member (100) and an elastic member (200), the force-bearing member (100) being rotatably connected to a frame (300) of a developing cartridge, the elastic member (200) being connected between the force-bearing member (100) and the frame (300);

when the imaging device works, the stress piece (100) is acted by the imaging device, the stress piece (100) moves from a first position to a second position, and the elastic piece (200) is stretched;

when the imaging device is not in operation, the stress piece (100) is not acted by the imaging device, the stress piece (100) moves from the second position to the first position, and the elastic piece (200) is restored to the original state.

2. The forced pushing assembly according to claim 1, wherein the elastic member (200) is a tension spring, the stress member (100) and the frame (300) are provided with fixing columns (400), two ends of the tension spring are provided with sleeving parts, and the sleeving parts are sleeved on the fixing columns (400).

3. The thrust assembly of claim 1, wherein the force-bearing member (100) is provided with a limit structure (120).

4. A push assembly according to claim 1, characterized in that an end of the force-receiving member (100) protruding from the frame (300) is provided with a force-receiving portion (110), the force-receiving portion (110) being adapted to contact and receive a force of the imaging apparatus.

5. A developing cartridge comprising a frame (300) and a developing roller (700) provided on the frame (300) and a urging assembly according to any one of claims 1 to 4;

when the force receiving member (100) is positioned at a first position, the developing roller (700) is separated from a photosensitive drum of the image forming apparatus;

when the force receiving member (100) is positioned at the second position, the developing roller (700) is in contact with the photosensitive drum of the image forming apparatus.

6. The developing cartridge according to claim 5, wherein the frame (300) includes a frame body and a side cover attached to the frame body, and the elastic member (200) has one end attached to the force receiving member (100) and the other end attached to the frame body or the side cover.

7. A developing cartridge according to claim 4 or 5, wherein said urging members are provided in two groups, and said urging members are provided at both ends of said frame (300), respectively.

8. An image forming apparatus comprising the urging assembly according to any one of claims 1 to 4 or comprising the developing cartridge according to any one of claims 5 to 7.