CN214795574U - Developer cartridge - Google Patents

Abstract

The developer box relates to the technical field of electronic photography imaging, and comprises a box body and a rotating part provided with a shaft hole; a shaft extending outwardly from one end wall of the box and perpendicular to the end wall; first and second interference surfaces perpendicular to the outer surface of the end wall; a sliding surface perpendicular to and adjacent to the first interference surface; a pipe notch is formed in one side, facing the end wall, of the rotating piece, the end face of the pipe notch is a stepped face along the circumferential direction, the rotating piece is further provided with a limiting plate, and the limiting plate is perpendicular to the end wall; the shaft hole is in clearance fit with the shaft rod. Has the advantages of simple structure and convenient resetting.

Description

Developer cartridge

Technical Field

The utility model relates to a detachable developer box installed in an electrophotographic imaging device.

Background

Chinese patent application publication No. CN18/28447a discloses an image forming apparatus and a developer cartridge provided with a counting mechanism, and the image forming apparatus is equipped with a new product detecting device for detecting whether the developer cartridge mounted to the image forming apparatus is new.

The chinese patent application publication No. CN102799090A discloses a developing cartridge with a counting mechanism, which is structurally improved for the problems of higher requirement on the matching precision of the counting mechanism, difficulty in controlling the production process and increased cost of the counting mechanism, and the provided developer cartridge comprises a cartridge body, a counting mechanism and a counting mechanism driving member; the counting mechanism comprises a protrusion, the protrusion is driven by a driving part of the counting mechanism to count the developing box from a first position where the protrusion touches a contact lever on the electrophotographic imaging device to a second position where the protrusion does not touch the contact lever on the electrophotographic imaging device, the counting mechanism comprises a fixed part and a rotating part, one end face of the rotating part is provided with a top column, and the protrusion is arranged on the other end face of the rotating part; the fixed piece is provided with an opening corresponding to the top column; the opening acts with the top post to allow the protrusion to move perpendicular to the side wall of the case.

The image forming apparatus to which both of the above-described developer cartridges are applied is characterized in that it is usual to limit the number of prints of a new cartridge when it is judged that the new cartridge is new, for example, a standard page 5000 of a4 format can be printed. At present, along with the improvement of the production level and the quality of parts in the developer box, usually one developer box can print more pages, so that new toner can be filled and then printing is continued, but the counting mechanism needs to be reset after the new toner is filled, namely, after an old developer box filled with toner is filled into the imaging device, the imaging device can judge that the old developer box is a new box and print, the two prior art developer boxes have the problem that the resetting of the counting mechanism is difficult, an end cover needs to be detached and reset, and the technical requirement of reusing the developer box to reset the counting mechanism is too high for general consumers; more importantly, the counting mechanisms of the two developer cartridges have the problems of complex structure and unreliable operation.

Disclosure of Invention

The utility model mainly aims at providing a developer box with simple structure and reliable operation;

another object of the present invention is to provide a developer cartridge with a manual reset mechanism.

In order to achieve the main purpose, the developer box provided by the utility model comprises a box body and a rotating piece provided with a shaft hole; a shaft extending outwardly from one end wall of the box and perpendicular to the end wall; first and second interference surfaces perpendicular to the outer surface of the end wall, the first and second interference surfaces each being located on a projection projecting outwardly from the end wall; a sliding surface perpendicular to and adjacent to the first interference surface; a pipe notch is formed in one side, facing the end wall, of the rotating piece, the end face of the pipe notch is a stepped face along the circumferential direction, the rotating piece is further provided with a limiting plate, and the limiting plate is perpendicular to the end wall; the shaft hole is in clearance fit with the shaft rod; after the rotating member rotates from the position where the limiting plate abuts against the first interference surface to the second interference surface, the end surface of the tube segment slides along the sliding surface and moves in the direction away from the end wall along the shaft under the guidance of the end surface of the tube segment, and when the limiting plate reaches the second interference surface, the rotating member moves back in the direction close to the end wall along the shaft under the guidance of the end surface of the tube segment.

It is thus clear that by the above scheme, the utility model discloses the pipe of revolving part lacks the axial reciprocating motion who realizes the revolving part with the glide plane cooperation on the lug, and realizes turned angle's restriction through the cooperation of limiting plate and a pair of hindrance face, realizes the discernment count of new box, therefore the structure is simple relatively.

The further scheme is that the rotary type electric tool further comprises an end cover, wherein an operation opening is formed in a cover shell part of the end cover, which is perpendicular to the end wall, and the operation opening is opposite to the rotary piece. When irritating the powder back again, can make the relative axostylus axostyle of rotating member remove in the direction of keeping away from the end wall at the axial through this operation mouth, then turn back initial position, limiting plate and first position that hinders the face and support and lean on promptly to realize the utility model discloses aforementioned another purpose. The advantage of this scheme is to the developer box after refilling the carbon powder, and the user oneself just can conveniently carry out manual reset.

The transmission gear is provided with a driving part which is used for starting the rotation of the rotating member, so that the transmission gear is meshed with the gear of the rotating member. The advantage of this scheme can make the count start more smooth-going.

Still further, when the limit plate of the rotary member abuts against the second interference surface, the gear segment is disengaged from the transmission gear in the circumferential direction.

Another further scheme is that steps of the step surface are in smooth curved surface transition or inclined surface transition.

A further alternative is that when the end face of the segment at its largest dimension in the axial direction is located on the sliding surface, there is still a clearance between the rotary member and the end cap, which is sufficient to keep the rotary member further away from the end wall, so that the transfer gear is completely disengaged from the gear segment of the rotary member in the axial direction. The advantage of this scheme is that it is more convenient when manual reset.

Drawings

FIG. 1 is a perspective view of an embodiment of a developer cartridge of the present invention;

FIG. 2 is an exploded view of the end cap, the rotary member disengaged from the developer cartridge;

FIG. 3 is an exploded view of the end cap, rotary member, transfer gear disengaged from the developer cartridge;

FIG. 4 is a view of the rotary member as seen from the end face of the tube segment;

FIG. 5 is a perspective view of the rotating member;

FIG. 6 is a perspective view of the rotating member from another perspective;

FIG. 7 is a cross-sectional view in the ZY plane, taken along the X-axis, away from the end wall and abutting the sliding surface, with the plate of restriction of FIG. 7 abutting the first interfering surface;

FIG. 8 is a perspective view of the end cap open with the end face of the tube segment of FIG. 8 on the sliding surface;

fig. 9 is the same partial view as fig. 7, with the stopper plate abutting against the second interfering surface in fig. 9.

Detailed Description

The present invention is an improvement of the prior art, and therefore the developer cartridge should be implemented with reference to the disclosure of the prior art, and the closely related parts of the present invention will be described in detail below, and the embodiments of the present invention all show a rectangular coordinate system in each figure, so as to reflect the description of different views of a specific structure when the viewing angle changes to unify the orientation and description.

Referring to fig. 1, the developer cartridge 100 has a cartridge body 1 having an inner cavity for accommodating toner, and a stirring frame, a toner feeding roller and a developing roller 11 rotatably mounted in the cartridge body 1 with respect to the cartridge body 1, wherein the rotational power of the image forming apparatus is inputted from a power receiving port 12 and drives the above-mentioned rotating member to rotate at a predetermined speed through transmission of a gear train, and an end cap 4 is a cover-like housing covering an end wall of the cartridge body 1 so as to cover the gear train.

Referring to fig. 2 and 3, in fig. 3, shaft end gears and carrier gears are omitted as compared with fig. 2, and the rotary member 3 is rotated at an angle about its axis and the transfer gear 2 is disassembled from the case body 1. The function of the transmission gear 2 is to transmit the rotary power to the gear segment 34 of the rotary member 3 via the gear 21 of its duplicate gear, which in this case is fixed to the shaft end of the mixing frame, i.e. the transmission gear 2 is the shaft end gear of the mixing frame, and the transmission gear 2 is also provided with a drive part 22. A shaft 14 extends outwardly from one end wall 13 of the case 1, the shaft 14 being perpendicular to the end wall 13, i.e. the normal to the major face of the end wall 13 is in the X-direction, and the centre line of the shaft 14 is also in the X-direction. The projections 15 and 16 also project outwardly from the end wall 13, i.e., in the positive X-axis direction. The rotating member 3 has a shaft hole 35 in clearance fit with the shaft 14, so that the rotating member 3 can rotate around the shaft 14 and move along the X-axis under the driving of the transmission gear 2, and the rotating member 3 can also be pushed through an operation port 41 arranged on a cover shell part of the end cover 4 perpendicular to the end wall 13, wherein the operation port 41 is arranged at the lower part of the end cover 4 and is opposite to the rotating member 3 so as to manually reset the rotating member 3 through the operation port 41, a pipe segment 31 is arranged on one side of the rotating member 3 facing the end wall 13, the end surface of the pipe segment 31 facing the end wall 13 is circumferentially stepped, the rotating member 3 further has a limiting plate 32, and the limiting plate 32 is perpendicular to the end wall 13. The side of the rotary member 3 facing away from the end wall 13 is provided with a moving member 33 that engages a contact in the image forming apparatus, and when the rotary member 3 rotates, the moving member 33 will drive the contact once during movement from the first position to the second position, signaling that the developer cartridge 100 is a new cartridge.

A compression spring is arranged between the end cap 4 and the rotary member 3, the restoring force of which spring urges the rotary member to have a tendency to move in the negative direction of the X-axis.

Referring to fig. 4, radially outward from the centerline of the rotary member 3 are a shaft hole 35, a tube segment 31, a stopper plate 32, and a gear segment 34, respectively.

Referring to fig. 5 and 6, the end surface of the tube segment 3 is a stepped surface 31 along the circumferential direction, which means that the stepped surface is formed by connecting a first surface 311, a second surface 312, a third surface 313 and a fourth surface 314 in the circumferential direction, and the surfaces are changed in coordinate along the X axis direction, and should be transited by a smooth curved surface or an inclined surface between the surfaces, so as to form the tube segment 3 of the present invention compared with an abnormal tube.

Referring to fig. 7, in this example, the bump is divided into two bumps 15 and 16 for the reason of the limited space, and the surface of the bump 15 facing the Y axis direction and perpendicular to the end wall 13 is a first interference surface 151, while the surface facing the X axis direction is a sliding surface 152, and obviously, the sliding surface 152 is perpendicular to and adjacent to the first interference surface 151. A surface of the projection 16 that faces substantially the Y axis forward direction and is perpendicular to the end wall 13 is a second interference surface 161. In other embodiments, tab 15 and tab 16 may be formed as one piece, if space permits.

The following describes the operation of the developer cartridge 100 of the present invention as a new cartridge.

Referring to fig. 7, when the cartridge is new, the rotation angle of the rotary member 3 is at a position where the stopper plate 32 abuts against the first interference surface 151, and at a position closest to the end wall 13 in the X-axis direction by the restoring force of the compression spring, and the gear piece 34 is not engaged with the gear 21. After the image forming apparatus is mounted, the transmission gear 2 is rotated clockwise in fig. 7 at the start of normal operation, the driving portion 22 contacts the driven portion 36 (see fig. 5) of the rotary member 3, the rotary member 3 starts to rotate, and the gear notch 34 is engaged with the gear 21, so that the stopper plate 32 rotates counterclockwise, and at the same time, the end surface of the tube notch 31 starts to slide on the sliding surface 152, first, the fourth surface 314 contacts the sliding surface 152, and then, the third surface 313, the second surface 312, and the first surface 311 in the state shown in fig. 8.

Referring to fig. 8, when the end face of the largest dimension piece of the pipe segment 31 in the axial direction is located on the sliding surface 152, that is, when the third face 313 is located on the sliding surface 152, there is still a clearance between the rotary member 3 and the end cap 4, which is enough to keep the rotary member 3 away from the end wall 13, so that the transmission gear 2 is completely disengaged from the gear segment 34 of the rotary member 3 in the axial direction.

Referring to fig. 9, at the second surface 312, the rotating member 3 is moved toward the end wall 13 by the restoring force of the pressing spring, and the gear segment 34 is disengaged from the gear 21, and the stopper plate 32 is still located between the first interfering surface 151 and the second interfering surface 161 but is already moved toward the second interfering surface 161, and the inertia of the rotating member 3 is suppressed by the stopper plate 32 abutting against the second interfering surface 161.

The following describes the operation of the developer cartridge 100 of the present invention for environmental retrofit use.

Before or after refilling toner into the developer cartridge 100, the rotating member 3 needs to be reset before loading the image forming apparatus, and the resetting process is to manually return the rotating member 3 from the state shown in fig. 9 to the state shown in fig. 7. The rotating member 3 is applied with a force against the restoring force of the compression spring, that is, a force moving in the X-axis forward direction through the operation opening 41, so that the rotating member rotates to the angle shown in fig. 7 without being constrained by the transmission gear, that is, the rotating member can be released, and is reset under the action of the restoring force of the compression spring.

Other embodiments

The shape of the convex block can be other shapes as long as the convex block has a first interference surface, a sliding surface and a second interference surface, namely, the convex block can limit two positions of the limit plate and enable the tube segment end surface to slide by the same function.

Claims (6)

1. The developer box comprises a box body, a rotating piece and a shaft lever, wherein the rotating piece is provided with a shaft hole, and the shaft lever extends outwards from one end wall of the box body and is vertical to the end wall;

the method is characterized in that:

first and second interference surfaces perpendicular to the outer surface of the end wall, the first and second interference surfaces each being located on a projection projecting outwardly from the end wall;

a sliding surface perpendicular to and adjacent to the first interference surface;

a pipe notch is formed in one side, facing the end wall, of the rotating piece, the end face of the pipe notch is a stepped face along the circumferential direction, the rotating piece is further provided with a limiting plate, and the limiting plate is perpendicular to the end wall;

the shaft hole is in clearance fit with the shaft rod;

after the rotating member rotates from the position where the limiting plate abuts against the first interference surface to the second interference surface, the end surface of the tube segment slides along the sliding surface and moves in the direction away from the end wall along the shaft under the guidance of the end surface of the tube segment, and when the limiting plate reaches the second interference surface, the rotating member moves back in the direction close to the end wall along the shaft under the guidance of the end surface of the tube segment.

2. The developer cartridge according to claim 1, wherein:

the end cover is provided with an operation opening, and the operation opening is opposite to the rotating piece.

3. The developer cartridge according to claim 2, wherein:

the transmission gear is provided with a driving part which is used for starting the rotation of the rotating piece, so that the transmission gear is meshed with the gear of the rotating piece.

4. The developer cartridge according to claim 3, wherein:

when the limiting plate of the rotating piece abuts against the second interference surface, the gear segment is disengaged from the transmission gear in the circumferential direction.

5. The developer cartridge according to claim 1, wherein:

smooth curved surface transition or inclined plane transition between the ladder of the ladder face.

6. The developer cartridge according to any one of claims 1 to 5, wherein:

when the end face of the pipe segment at the maximum dimension in the axial direction is located on the sliding surface, a clearance exists between the rotating element and the end cover, and the clearance is enough to enable the rotating element to be continuously far away from the end wall, so that the transmission gear and the gear segment of the rotating element are completely disengaged in the axial direction.

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