CN215376096U

CN215376096U - Developing box

Info

Publication number: CN215376096U
Application number: CN202121601096.9U
Authority: CN
Inventors: 龚小敏
Original assignee: Jiangxi Yibo Electronic Technology Co Ltd
Current assignee: Jiangxi Yibo Electronic Technology Co Ltd
Priority date: 2021-07-14
Filing date: 2021-07-14
Publication date: 2021-12-31
Anticipated expiration: 2031-07-14

Abstract

The utility model discloses a developing cartridge, comprising: the developer box comprises a shell, a first fixing device and a second fixing device, wherein the shell can contain developer and comprises a first mounting plane and a second mounting plane crossed with the first mounting plane, and a first mounting hole is formed in the second mounting plane; a doctor blade capable of controlling the thickness of a developer layer, wherein the doctor blade comprises a blade holder and a blade, the blade holder is provided with a first part and a second part intersected with the first part, the first part is installed on the first installation plane in a matching mode, the second part is installed on the second installation plane in a matching mode, the blade is attached to the first part, and a second installation hole is formed in the second part; the connecting part can be installed in the first installation hole and the second installation hole to fix the powder discharging knife; and the first mounting hole and the second mounting hole have no overlapped part in projection along the extension direction of the second mounting plane.

Description

Developing box

Technical Field

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

Background

Nowadays, printing and copying of paper become an indispensable part of people's production and life, play an important role in modern society, and are accepted by more and more users due to the advantages of small occupied space, high printing speed, low price and the like of laser printers.

In the prior art, a developing cartridge is disclosed, which is detachably mounted in a laser printer, the developing cartridge comprising: a housing which accommodates a developer and is provided with a positioning column protruding in a thickness direction of the housing; a developing roller supported on the housing and capable of carrying a developer; and the powder discharging knife is arranged on the shell and is adjacent to the developing roller, the powder discharging knife comprises a knife rest and a blade fixed on the knife rest, the blade can be used for controlling the thickness of a developer layer conveyed to the developing roller by the shell, and when the powder discharging knife is arranged, the powder discharging knife is firstly positioned by the positioning column and then fixed on the shell by a screw.

In the traditional assembling mode of the developing box, the developing roller and the powder outlet knife are generally installed manually, but the requirement of the developing box is increased day by day along with the approval of people to laser printing, the traditional manual installing mode is low in installing efficiency and low in installing precision, and the industry requirement can not be met far away, so the automatic technology applied to the developing box industry is produced at the end of the year, the automatic equipment is adopted to assemble the developing box, the assembling efficiency and the assembling precision of the developing box can be improved, and the developing box is the development trend of the future consumable material industry.

However, in the developing cartridge of the prior art, the developing roller is installed along the width direction of the developing cartridge, and the protruding direction of the positioning column disposed on the housing intersects with the installation direction of the developing roller, so that the powder discharging blade cannot be installed in place in one step in the same direction as the developing roller, otherwise the powder discharging blade interferes with the housing, so that the installation direction of the developing roller and the powder discharging blade is inconsistent, and although the manual installation is not greatly affected, when the developing roller and the powder discharging blade are installed by using an automatic device, the installation direction of the developing roller and the powder discharging blade is inconsistent, so that the automatic device needs to be additionally adjusted once to complete the installation of the developing roller and the powder discharging blade, which greatly reduces the assembly efficiency of the developing cartridge, and there is a need to invent a developing cartridge that uses an automatic device to simply, and a method for installing a powder discharging blade in one step in the same direction can be used for the automatic device, The developing box of the powder outlet knife is conveniently and quickly installed.

SUMMERY OF THE UTILITY MODEL

In order to solve the above problems, the present invention provides a new developing cartridge, which is mainly realized by the following technical scheme:

a developing cartridge comprising:

the developer box comprises a shell, a first fixing device and a second fixing device, wherein the shell can contain developer and comprises a first mounting plane and a second mounting plane crossed with the first mounting plane, and a first mounting hole is formed in the second mounting plane;

a doctor blade capable of controlling the thickness of a developer layer, wherein the doctor blade comprises a blade holder and a blade, the blade holder is provided with a first part and a second part intersected with the first part, the first part is installed on the first installation plane in a matching mode, the second part is installed on the second installation plane in a matching mode, the blade is attached to the first part, and a second installation hole is formed in the second part;

the connecting part can be installed in the first installation hole and the second installation hole to fix the powder discharging knife;

and the first mounting hole and the second mounting hole have no overlapped part in projection along the extension direction of the second mounting plane.

Further, a stopper portion is provided on each of both sides in the longitudinal direction of the housing, and the stopper portion is configured as a protruding portion protruding toward the center in the longitudinal direction of the housing.

Furthermore, clearance allowance smaller than 1mm is reserved between the two sides of the powder outlet knife in the length direction and the limiting part.

Furthermore, a guide inclined plane is further arranged on the limiting part and can be used for guiding the installation of the powder outlet knife.

Further, the first mounting holes are provided with 3, and the 3 first mounting holes are arranged at intervals in the length direction of the second mounting plane.

Further, a sealing component is arranged between the powder outlet knife and the shell.

Further, the connecting part is a screw.

Furthermore, the second mounting plane has a first extending direction and a second extending direction perpendicular to the first extending direction, the first extending direction is the length direction of the housing, and the second extending direction is the mounting direction of the powder discharging knife.

Further, the developing cartridge may further include a developing roller that can carry a developer, and the developing roller may also be mounted in the second extending direction.

On one hand, in the developing box provided by the utility model, the powder discharging knife can be installed manually and can also be installed rapidly through automatic equipment, so that the installation universality of the powder discharging knife is improved. On the other hand, when the developing roller and the powder discharging knife are independently installed by using automatic equipment, the developing roller and the powder discharging knife are installed in place in one step, the installation direction does not need to be adjusted for many times, the developing roller and the powder discharging knife can be installed towards the same direction when being installed successively, the developing roller and the powder discharging knife can be installed quickly without adjusting the direction for many times, the assembling efficiency of the developing box is greatly improved, and the installation precision is high.

Drawings

FIG. 1 is a schematic view of a developing cartridge according to the present invention;

FIG. 2 is an enlarged schematic view of the restricting section of the present invention;

fig. 3 is an exploded schematic view of the developing cartridge in the present invention.

Detailed Description

In order to make the object, technical scheme and technical effect of the embodiment of the present invention clearer, the technical scheme of the developing cartridge of the present invention will be clearly and completely described below with reference to the accompanying drawings. It should be apparent that the described embodiment is only one preferred embodiment of the present invention, not all embodiments, and other embodiments obtained by those skilled in the art without inventive efforts based on the embodiments of the present invention belong to the protection scope of the present invention.

In the following description, the longitudinal direction of the developing cartridge B is the left-right direction, which is also the longitudinal direction of the doctor blade 110 and the first extending direction of the second mounting plane 139, and the power receiving portion 127 is located on the right side of the developing cartridge B in the left-right direction; the second extending direction of the second mounting plane 139 is the front-rear direction, and the doctor blade 110 is mounted to the developing cartridge B from the rear to the front; the up-down direction is perpendicular to both the left-right direction and the front-back direction.

As shown in fig. 1 to 3, the present invention provides a developing cartridge B detachably mountable to a drum cartridge having a photosensitive drum capable of generating an electrostatic latent image, and mountable to an electrophotographic image forming apparatus including a power transmitting portion having a power transmittable portion, along with the drum cartridge.

The developing cartridge B includes: a power receiving part 127 provided at a right side of the developing cartridge B, engageable with the power transmitting part and receiving the power transmitted by the power transmitting part; a housing 130 for accommodating a developer, the housing 130 including a first mounting plane 138 and a second mounting plane 139 intersecting the first mounting plane 138, wherein the second mounting plane 139 has a first extending direction extending in a left-right direction and a second extending direction extending in a front-rear direction, and a plurality of first mounting holes 133 are arranged at intervals in the left-right direction (i.e., a length direction) of the second mounting plane 139; and a developing roller 120 rotatably supported at a rear side of the casing 130 and operable to carry a developer, the developing roller 120 being mountable to the casing 130 substantially in the second extending direction when the developing cartridge B is assembled.

The developing cartridge B further includes a powder discharging blade 110 mounted on the housing 130, the powder discharging blade 110 including a blade holder 111 extending in the left-right direction and a blade 112, specifically, the blade holder 111 includes a first portion 111a and a second portion 111B intersecting the first portion 111a, the first portion 111a and the second portion 111B each extend in the left-right direction, the first portion 111a is fittingly mounted on a first mounting plane 138 of the housing 130, the second portion 111B is fittingly mounted on a second mounting plane 139 of the housing 130, one end of the blade 112 is attached to the first portion 111a, and the other end (i.e., free end) abuts against the developing roller 120 to control the thickness of the layer of developer conveyed to the developing roller 120; the powder outlet blade 110 is further provided with second mounting holes 113, the second mounting holes 113 are arranged at intervals in the length direction of the second part 111b of the blade holder 111 and penetrate through the second part 111b in the up-down direction, the number of the second mounting holes 113 is preferably 3, correspondingly, the number of the first mounting holes 133 on the housing 130 is also 3, the mounting stability of the powder outlet blade 110 is ensured, the production processes of the housing 130 and the powder outlet blade 110 are simplified and the production cost is reduced by reducing the number of the first mounting holes 133 and the second mounting holes 113 to the maximum extent, the connecting part is preferably a screw, the connecting part is simple in structure and low in cost, the first mounting holes 133 and the second mounting holes 113 have no overlapping part when projected along the extending direction of the second mounting plane 139, the configuration is such that the powder outlet blade 110 is mounted on the housing 130 from the back to the front, the doctor blade 110 can be smoothly mounted to the housing 130 without interference with the housing 130.

Further, the developing cartridge B further includes a pair of limiting portions 131 respectively located at both sides in the longitudinal direction of the casing 130, the pair of limiting portions 131 are configured as protruding portions protruding toward the center of the casing 130 in the left-right direction of the casing 130, the second portion 111B of the blade holder 111 is installed between the pair of limiting portions 131 for limiting the left-right direction position of the mounting of the powder discharging blade 110 on the casing 130, further, a guiding inclined surface 132 is provided on the limiting portions 131, the guiding inclined surface 132 is provided upstream of the limiting portions 131 in the mounting direction of the powder discharging blade 110, and in the process of mounting the powder discharging blade 110 onto the casing 130 from the rear to the front, if the powder discharging blade 110 is slightly shifted in the left-right direction, the guiding inclined surface 132 can guide the powder discharging blade 110 to the correct mounting position, increasing the mounting tolerance of the powder discharging blade 110; further, since the doctor blade 110 is positioned by the first mounting plane 138 in the front-back direction and the second mounting plane 139 in the up-down direction during the mounting process, in order to avoid the situation that the blade holder 111 of the doctor blade 110 cannot enter between the pair of limiting portions 131 due to the over-small distance between the pair of limiting portions 131 of the housing 130 or the over-long manufacturing error of the second portion 111b of the doctor blade 110, the left and right sides of the doctor blade 110 and the limiting portions 131 have a clearance margin smaller than 1 mm.

Further, a sealing member 140 extending in the left-right direction is further provided between the housing 130 and the powder discharge blade 110, specifically, at least a part of the sealing member 140 is adhered to the first mounting plane 138 of the housing 130, and by providing the sealing member 140, the developer in the housing 130 is prevented from leaking through the mounting gap between the housing 130 and the powder discharge blade 110.

When the developing cartridge B is assembled, the components such as the doctor blade 110 of the present invention can be installed not only manually, but also quickly by using automated equipment, and the specific installation process is as follows: first, the sealing member 140 is clamped by the automatic device to be adhered to the housing 130, then, the doctor blade 130 is clamped by the automatic device to be mounted to the housing 130 from the rear to the front, and finally, the doctor blade 110 is mounted to the housing 130 by the automatic device to be clamped by the screws to be mounted in the first mounting hole 133 and the second mounting hole 113, so that the doctor blade 110 is fixed to the housing 130, thereby completing the mounting of the doctor blade 110. In the whole installation process, the powder outlet blade 110 can be installed on the shell 130 only along one installation direction by the powder outlet blade 110, the installation direction does not need to be adjusted for many times, and the installation efficiency of the powder outlet blade 110 is obviously improved.

Advantageous effects

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims

1. A developing cartridge comprising:

the first mounting hole and the second mounting hole are not overlapped in projection along the extension direction of the second mounting plane.

2. A developing cartridge according to claim 1, wherein a stopper portion is further provided on each of both sides in the longitudinal direction of said casing, said stopper portion being configured as a protruding portion protruding toward a center in the longitudinal direction of said casing.

3. A developing cartridge according to claim 2, wherein a clearance margin of less than 1mm is left between both sides of the doctor blade in the longitudinal direction and the limiting portion.

4. A developing cartridge according to claim 2, wherein a guide slope for guiding the mounting of said doctor blade is further provided on said position restricting portion.

5. A developing cartridge according to claim 1, wherein said first mounting hole is provided in 3, and 3 of said first mounting holes are arranged at intervals in a length direction of said second mounting plane.

6. A developing cartridge according to claim 1, wherein a sealing member is provided between said powder discharging blade and said casing.

7. A developing cartridge according to claim 1, wherein said connecting member is a screw.

8. A developing cartridge according to claim 1, wherein said second mounting plane has a first extending direction which is a longitudinal direction of said casing and a second extending direction which is a mounting direction of said doctor blade and is perpendicular to said first extending direction.

9. A developing cartridge according to claim 8, further comprising a developer-loadable developing roller, said developing roller also being mountable in said second direction of extension.