CN221281411U - Developing box end cover and developing box - Google Patents

Abstract

The utility model relates to a developing cartridge end cover, which is suitable for a developing cartridge, wherein the developing cartridge is detachably arranged in an imaging device provided with a counted piece; the developing box comprises an automatic reset mechanism and a counting piece; the counting piece is used for interacting with the counted piece; the developing box end cover comprises an end cover main body and a fixed seat, the fixed seat and the end cover main body are integrally formed, the end cover main body is provided with a containing cavity for containing the counting piece, and the automatic reset mechanism is movably arranged on the fixed seat; the automatic reset mechanism is abutted with the image forming device to receive force parallel to the left-right direction during the mounting process of the developing cartridge and when the developing cartridge is mounted to a preset position; the automatic resetting mechanism is simple and compact in structure; meanwhile, the automatic resetting mechanism is provided with buckles in different directions, so that the automatic resetting mechanism is firm in connection and not easy to fall off.

Description

Developing box end cover and developing box

Technical Field

The present utility model relates to the field of electrophotographic image forming, and more particularly, to a developing cartridge detachably mountable to an electrophotographic image forming apparatus and an end cap provided on the developing cartridge.

Background

The developing cartridge is a container for detachably mounting in an electrophotographic image forming apparatus (hereinafter referred to as "image forming apparatus"), in which a counting member is provided, and in which a counted member is provided, and the image forming apparatus records parameters of the developing cartridge by counting the number of times the counting member is touched with the counted member, the touch time, etc. when the image forming apparatus is operated.

As described in chinese patent application publication No. CN217932422U, the counting assembly will stay at a specific position and no longer rotate after the counting assembly completes its work; before the developing cartridge is reused, the counting assembly in the developing cartridge needs to be reset, otherwise, the image forming apparatus cannot recognize the developing cartridge, and the developing cartridge cannot be used continuously.

Therefore, the developing box is also provided with an automatic reset mechanism capable of realizing automatic reset of the counting assembly, in the prior art, the automatic reset mechanism is arranged on the end cover of the developing box through a mounting piece, the existing mounting piece is connected in a clamping manner, and the risk that the automatic reset mechanism falls off along with the mounting piece from the end cover due to fatigue of the clamping exists.

Disclosure of utility model

The utility model provides a developing box end cover for installing an automatic resetting mechanism, wherein a fixing seat for installing the automatic resetting mechanism is arranged on the developing box end cover.

A developing cartridge end cap is applicable to a developing cartridge detachably mounted in an image forming apparatus provided with a counted member, the developing cartridge including an automatic reset mechanism and a counting member; the counting piece is used for interacting with the counted piece; the end cover comprises an end cover main body and a fixed seat, the fixed seat and the end cover main body are integrally formed, the end cover main body is provided with a containing cavity for containing the counting piece, and the automatic resetting mechanism is movably arranged on the fixed seat; the automatic reset mechanism abuts the image forming apparatus to receive a force parallel to the left-right direction during the mounting of the developing cartridge and when the developing cartridge is mounted to a predetermined position.

The automatic reset mechanism comprises: the supporting part is connected with the supporting part; the abutting part is used for abutting against the inner wall of the imaging equipment; the supporting part is used for supporting the abutting part; the limiting part is used for being matched with the counting part; the abutting part is provided with a guide inclined plane; the supporting part comprises a first cantilever and a second cantilever, and the abutting part is arranged between the two cantilevers; the first cantilever is provided with a first buckle; the second cantilever is provided with a second buckle; the protruding direction of the first buckle is intersected with the protruding direction of the second buckle; the abutting part is provided with an arc surface, and the distances from the end surface of the automatic reset mechanism to the center of the arc surface are different along the front-back direction; the limiting part is used for blocking the counting piece from continuously rotating; the counting piece rotates around the central line of the counting piece, and the limiting part is farther away from the central line of the counting piece than the abutting part.

The fixed seat comprises a movable groove for installing an automatic reset mechanism; the automatic resetting mechanism can move in the left-right direction in the movable groove.

The novel automatic resetting mechanism is arranged on the end cover of the developing box, so that the developing box can be taken out of the imaging equipment to finish automatic resetting; the developing box has the advantages of simple and compact structure, difficult falling of the automatic resetting mechanism and easier production and assembly.

Drawings

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

Fig. 2 is a schematic exploded view of a developing cartridge end cap according to the present utility model.

Fig. 3 is a perspective view of the automatic resetting mechanism according to the present utility model.

Fig. 4 and 5 are perspective views of a developing cartridge end cap according to the present utility model.

Detailed Description

In order to make the description more accurate, the embodiments of the present utility model will be described in detail below, first, defining various orientations according to the present utility model based on the posture of the developing cartridge a in the mounted state, the developing cartridge a having a left-right direction parallel to the longitudinal direction, a front-rear direction parallel to the width direction/the lateral direction, and an up-down direction parallel to the height direction/the vertical direction, the developing cartridge a being mounted forward in the front-rear direction and taken out rearward; the front-rear direction, the up-down direction, and the left-right direction intersect each other, and preferably the front-rear direction, the up-down direction, and the left-right direction are perpendicular to each other.

Fig. 1 is a perspective view of a developing cartridge according to the present utility model; fig. 2 is a schematic exploded view of a developing cartridge end cap according to the present utility model.

As shown in fig. 1 and 2, the developing cartridge a may be directly detachably mounted to the electrophotographic image forming apparatus, or may be mounted to a drum frame provided with a photosensitive drum, and then both may be mounted together into the electrophotographic image forming apparatus. The developing cartridge a includes: a casing 1, a developing member 2, an end cap 3, a driving force receiving member 4, and a counting assembly 5; the casing 1 is used for containing developer, the developing member 2 is rotatably arranged on the casing 1, and the developing member 2 is used for supplying the developer outwards; the end cover 3 is connected with the shell 1, and preferably, the end cover 3 is fixed on the outer side of the shell 1 in the length direction; the driving force receiving member 4 is configured to receive a driving force from the outside (for example, an image forming apparatus) to drive the developing member 2 to rotate about its axis, the axial direction of the developing member being parallel to the developing cartridge length direction; the driving force receiving member 4 and the counting assembly 5 may be located at the same longitudinal end of the housing 1 or may be located at both longitudinal ends of the housing 1, respectively; the developing cartridge a further includes a conductive portion 6 provided on the opposite side of the developing cartridge length direction end driving force receiving member 4, the conductive portion 6 being for electrically connecting with an external power supply portion (not shown) to receive electric power and supply the electric power to the developing member 2; hereinafter, the end at which the conductive portion 6 is located is defined as a conductive end, and the end at which the driving force receiving member 4 is located is defined as a driving end; the developing cartridge end cover 3 further includes a driving end cover 32 provided at the driving end side, and a conductive end cover 33 provided at the conductive end side; a portion of the driving force receiver 4 is exposed outward through the driving end cap 32; in this embodiment, the counter element is mounted on the same side as the conductive end cap 33.

Further, in the state shown in fig. 1, the direction from the driving end to the conductive end is defined as the right side of the developing cartridge a, the direction from the conductive end to the driving end is defined as the left side of the developing cartridge a, the mounting direction B of the developing cartridge is defined as the front side of the developing cartridge, the direction opposite to the mounting direction B is the rear side of the developing cartridge, the gravitational direction of the developing cartridge is defined as the lower side of the developing cartridge in the height direction of the developing cartridge, and the direction opposite to the lower side is defined as the upper side of the developing cartridge.

Further, the developing cartridge conductive end cap 33 includes an end cap body, which partially forms a receiving cavity 31 for receiving at least a portion of the counting assembly 5; the counting assembly 5 comprises a counting member rotatably mounted in the housing chamber 31; at least a portion of the counter element is exposed outwardly through the end cap 3; when the imaging device works, the counting piece 3 is contacted with a counted piece in the imaging device, so that the imaging device records the parameters of the developing box; the counter is reset by the automatic reset mechanism 8 at least one of the process of taking out the developing cartridge and the process of reinstalling the developing cartridge; the conductive end cap 33 further includes an end cap surface 33a; the end cap surface 33a is an end surface of the end cap in the right direction, and the end cap surface 33a is opposite to the accommodating chamber 31 in the left-right direction.

Fig. 3 is a perspective view of the automatic resetting mechanism according to the present utility model.

As shown in fig. 3, the automatic reset mechanism 8 includes: an abutting portion 81, a supporting portion, an attaching portion 84, and a limiting portion 85; the abutment 81 is for abutting against the inner wall of the image forming apparatus during and after the mounting of the developing cartridge a to a predetermined position; the abutment portion 81 is provided with a guide slope 81a; the guide slope 81a is inclined from the abutment 81 right Fang Dingduan toward the end cover surface 33 a; specifically, the distance between the guide slope 81a and the end cover surface 33a in the left-right direction gradually decreases in the back-to-front direction; the guide slope 81a is used to guide the automatic reset mechanism 8 to contact the inner wall of the image forming apparatus while reducing the mounting resistance of the developing cartridge a; the abutting part 81 further comprises an arc surface 81b for guiding the automatic reset mechanism 8 to be installed; the arc surface 81b is provided in the up-down direction on the abutting portion 81; the cambered surface 81b is located at a position near the rear of the abutting portion 81; the abutment portion has a distal end face 81b at the front, and a distal end face 82b at the rear of the first cantilever; the end face 81b and the end face 82b can also be regarded as two end faces of the automatic return mechanism in the front-rear direction; the distance from the end face of the automatic reset mechanism to the center of the cambered surface is different along the front-back direction; in one embodiment, the abutment end face 81b is farther from the center of the arc than the first cantilever end face 82b is from the center of the arc; the cambered surface 81b is matched with an arc-shaped groove 11f on the fixing seat 10, which is described below, and is used for installing the fool-proof mechanism 8; the support portion includes a first cantilever 82 and a second cantilever 83; the first cantilever 82 is connected to the rear of the abutting portion 81, and a first buckle 82a is provided on the first cantilever; the first buckle 82a is used for movably mounting the reset mechanism 8; the first catch 82a is provided at the end of the first cantilever 82, protruding rearward; the second cantilever 83 is connected in front of the abutting part 81 and is used for movably installing the automatic reset mechanism 8 in cooperation with the first cantilever 82; the second cantilever 83 is provided with a second buckle 83a at the end; the direction in which the first catch 82a protrudes intersects the direction in which the second catch 83a protrudes; preferably, the second catch 83a protrudes upward; the mounting portion 84 is provided between the first cantilever 82 and the second cantilever 83, and is connected to the abutting portion 81; the mounting portion 84 is for mounting the following elastic member 9; the limiting part 85 extends a certain distance from at least one of the first cantilever 82, the second cantilever 83, the abutting part 81 and the mounting part 84, and then extends to the left to form an extension arm 85a; the counting piece rotates around a central line M in the accommodating cavity; when the automatic resetting mechanism 8 is mounted to the end cover, the limit portion 85 is located radially outside the accommodating chamber 31, specifically, the limit portion 85 is farther from the counter center line M than the abutting portion 81; the limiting part 85 is used for being matched with the counting piece, and when the counting piece finishes counting, the limiting part 85 is used for blocking the counting piece at the radial edge of the counting piece and limiting the counting piece to continue rotating.

As shown in fig. 2, the developing cartridge a is further provided with an elastic member 9; the elastic piece 9 is used for resetting the automatic resetting mechanism 8, so that the automatic resetting mechanism 8 is slidably connected with a fixed seat 10; specifically, the elastic member 9 is disposed between the automatic return mechanism 8 and the fixed seat 10.

Fig. 4 and 5 are perspective views of a developing cartridge end cap according to the present utility model.

As shown in fig. 4 and 5, the conductive end cap 33 is provided with a fixing base 10, and a part of the fixing base 10 protrudes rightward with respect to the end cap surface 33a and a part of the fixing base protrudes toward the counter accommodating cavity 31 with respect to the end cap surface 33 a; preferably, the conductive end cap 33 is integrally formed with the fixing base 10; the fixed seat 10 is provided with a movable groove 11 for installing the automatic reset mechanism 8; the automatic resetting mechanism 8 can move left and right in the movable groove 11; the movable groove 11 includes: a first through hole 11a, a second through hole 11b, and a third through hole 11c; as shown in fig. 4, a first through hole 11a is provided between the second through hole 11b and the third through hole 11c, the first through hole 11a being for accommodating the mounting portion 84; a step surface 11e is arranged in the first through hole 11a, and the step surface 11e is used for supporting the elastic piece 9; a groove 11f accommodating the arc surface 81b is formed above the first through hole step surface 11 e; the first through hole 11a is positioned near the rear of the fixing seat 10, and is bounded by the central line N of the fixing seat 10 in the front-rear direction, and the central line of the first through hole 11a is not overlapped with the central line N; the second through hole 11b is provided behind the first through hole 11a for accommodating the first cantilever 82; the second through hole 11b is provided with a first abutment surface 111 for cooperation with the first catch 82 a; the first buckle 82a on the first cantilever 82 is abutted with the first abutting surface 111 at the rear of the fixed seat 10 and used for blocking the automatic reset mechanism 8 from falling off; the third through hole 11c is provided in front of the first through hole 11a for accommodating the second cantilever 82; the third through hole 11c is provided above with a second abutment surface 112 for cooperation with the second catch 83 a; the first abutting surface 111 and the second abutting surface 112 are not parallel to the direction of the snap fit, so that the snap fit is more stable; the conductive end cap 33 further includes a fourth through hole 11d; the fourth through hole 11d is arranged below the fixed seat 10 and is connected with the fixed seat 10; the fourth through hole 11d is for accommodating the limit portion 85; the limiting part 85 extends into the accommodating cavity 31 through the fourth through hole 11d and is used for being matched with the counting piece.

Specifically, when the process cartridge a provided with the automatic reset mechanism 8 is mounted in the apparatus, the abutment 81 contacts the inner wall of the image forming apparatus, so that the automatic reset mechanism 8 is urged to the left; the elastic piece 9 is elastically deformed to store elastic force; the limiting part 85 in the automatic resetting mechanism 8 stretches into the accommodating cavity 31; when the counting piece starts to count, the counting piece rotates along the center M; when the counting piece rotates to the limiting part 85, the limiting protrusion arranged at the radial edge of the counting piece is blocked by the limiting part 85, so that the counting piece stops rotating, and counting is completed; when the processing box A is taken out from the imaging device, the inner wall of the imaging device is not abutted with the abutting part 85 any more, and the elastic piece 9 recovers elastic deformation to drive the automatic reset mechanism 8 to move rightwards; at this time, the limit part 85 no longer blocks the counting member from rotating, and the counting member is pushed by the elastic member additionally arranged in the processing box a to return to the initial position, thereby completing automatic reset; in some embodiments, the blocking member urges the counter member to complete the reset during the process of reinstallation of the process cartridge to the apparatus.

The utility model adopts an automatic resetting mechanism arranged on the end cover of the developing box, so that the developing box can be taken out of the imaging equipment to finish automatic resetting; the automatic reset mechanism is arranged on the fixed seat, and has a simple and compact structure; meanwhile, the automatic resetting mechanism is provided with buckles in different directions, so that the automatic resetting mechanism is firm in connection and not easy to fall off.

Claims (9)

1. A developing cartridge end cap adapted to a developing cartridge detachably mounted in an image forming apparatus provided with a counted member, the developing cartridge comprising an automatic reset mechanism and a counting member; the counting piece is used for interacting with the counted piece; the method is characterized in that:

The end cover comprises an end cover main body and a fixed seat, the fixed seat and the end cover main body are integrally formed, the end cover main body is provided with a containing cavity for containing the counting piece, and the automatic resetting mechanism is movably arranged on the fixed seat; the automatic reset mechanism abuts the image forming apparatus to receive a force parallel to the left-right direction during the mounting of the developing cartridge and when the developing cartridge is mounted to a predetermined position.

2. The developer cartridge end cap of claim 1, wherein the automatic reset mechanism comprises: the supporting part is connected with the supporting part; the abutting part is used for abutting against the inner wall of the imaging equipment; the supporting part is used for supporting the abutting part; the limiting part is used for being matched with the counting piece.

3. The developer cartridge end cover according to claim 2, wherein the abutment portion is provided with a guide slope.

4. The developer cartridge end cover according to claim 2, wherein the supporting portion includes a first cantilever and a second cantilever, and the abutting portion is provided between the two cantilevers.

5. The developer cartridge end cap of claim 4, wherein the first cantilever is provided with a first catch; the second cantilever is provided with a second buckle; the protruding direction of the first buckle is intersected with the protruding direction of the second buckle.

6. The developing cartridge head according to claim 2, wherein the abutting portion is provided with an arc surface, and a distance from a front-rear direction end surface of the automatic return mechanism to a center of the arc surface is different in a front-rear direction.

7. The developer cartridge end cap according to claim 2, wherein the stopper is for blocking the counter member from continuing to rotate; the counting piece rotates around the central line of the counting piece, and the limiting part is farther away from the central line of the counting piece than the abutting part.

8. The developer cartridge end cap according to claim 1, wherein the fixing base includes a movable groove for mounting an automatic reset mechanism; the automatic resetting mechanism can move in the left-right direction in the movable groove.

9. A developing cartridge comprising a casing and a developing cartridge end cap according to any one of claims 1 to 8, the developing cartridge end cap being mounted on the casing.