CN211786598U - Developing box - Google Patents

Abstract

The utility model provides a detachably installs the development box in the electrophotographic image forming apparatus, and the development box includes: a housing having a housing bin that houses a developer; a guide member rotatably provided at one end in a longitudinal direction of the developing cartridge, the guide member being provided with a guide portion; a movable member provided with a first force application portion and a guided portion; the detected component comprises at least one stress part and the developing box with the structure, the structure is simple, the technical problem that the manufacturing precision requirement is high due to the fact that a gear lacking gear device is adopted in the prior art is solved, the structure is simple, and the risk of blocking in the detection process is avoided.

Description

Developing box

[ technical field ] A method for producing a semiconductor device

The present invention relates to a developing cartridge, and more particularly to a developing cartridge mounted in an electrophotographic image forming apparatus having a detecting member.

[ background of the invention ]

In general, a developing cartridge is detachably used in an electrophotographic image forming apparatus, in which a developer in the developing cartridge is available for image formation during printing, and when the developer in the developing cartridge is exhausted, it is necessary to replace a new developing cartridge for use. When a newly replaced developing cartridge is mounted into an electrophotographic image forming apparatus, the electrophotographic image forming apparatus needs to detect the developing cartridge to determine whether the developing cartridge is new or the printable amount of the developing cartridge, the specification of the developing cartridge, and the like. Therefore, the electrophotographic image forming apparatus is provided with a detection member, and the corresponding developing cartridge is provided with a device to be detected for detection matching.

In the prior art, a device to be detected of a developing cartridge is a gear device, and the gear device comprises a stirring member gear and a tooth-missing gear which are positioned on one side of a shell; the missing gear comprises a protrusion which can be contacted with a detection component in the electronic photographing imaging equipment, when the stirring rack gear is meshed with a toothed part of the missing gear, the stirring rack gear drives the missing gear to rotate, the protrusion on the missing gear pulls the detection component in the electronic photographing imaging equipment, and then information is transmitted with the electronic photographing imaging equipment to detect whether the developing box is new or not. Generally, the difference in the number of projections on the toothless gear also detects the printable amount of the developing cartridge. When the rotating surface of the gear of the stirring frame is opposite to the non-toothed part of the non-toothed gear, the gear of the stirring frame is not meshed with the non-toothed gear, the gear of the stirring frame continues to rotate at the moment, but the non-toothed gear does not rotate along with the gear of the stirring frame, the detection is completed, and the non-toothed gear cannot rotate when the developing box is detached and installed again. However, in the prior art, the detected device with such a structure needs to be tightly matched with the stirring member gear through the toothed part and the tooth-lacking part of the tooth-lacking gear, so that the manufacturing precision requirement is high, the production cost is increased, the structure is complex, and the detection result is affected by the fact that the stirring member gear and the tooth-lacking gear are easily jammed in the contact detection process.

[ Utility model ] content

The utility model aims at providing a new developing box is complicated in order to solve the structure of missing tooth gear device, the preparation required precision is high and there is the technical problem of card dun risk.

In order to achieve the above purpose, the utility model provides a technical scheme does: a developing cartridge detachably mountable to an electrophotographic image forming apparatus, the developing cartridge comprising: a housing having a housing bin that houses a developer; the developing cartridge further includes: a guide member rotatably provided at one end in a longitudinal direction of the developing cartridge, the guide member being provided with a guide portion; a movable member provided with a first force application portion and a guided portion; the detected component comprises at least one force-bearing part.

The developing cartridge having the above-described structure employs a gear device including a guide, a movable member, and a detected member in place of the gear having the missing gear; during detection, the guide receives driving force, and has acting force on the movable component during rotation so that the movable component moves; because the atress portion sets up one at least, when the atress portion set up a plurality ofly, the movable member can apply the effort to a plurality of atress portions in proper order for can realize reciprocating rotation many times by the detected component, thereby realize measuring many times, the developing box of this kind of structure, its simple structure, low in manufacturing cost have avoided the risk of using the card pause that the gear lacks brought simultaneously.

Further, during the detection, the guided portion abuts on the guide portion.

Further, the guide portion is a spiral groove provided on a surface of the guide member.

The developing box with the structure has the advantages that the guide part adopts the spiral groove with a simpler structure, acting force can be applied to the movable member through the matching of the spiral groove and the guided part, the movable member can move in the length direction of the developing box under the guide of the spiral groove, the developing box with the structure avoids using a tooth-lacking gear with a complex structure, the structure is simple, the manufacturing cost is low, and meanwhile the blocking risk caused by using the tooth-lacking gear is avoided.

Further, the guide piece is also provided with a plane part which is perpendicular to the axial direction of the guide piece.

The developing box with the structure is simple in structure and low in manufacturing cost, and avoids the blocking risk caused by using a gear without teeth.

Further, the movable member includes a main body portion provided with a first mounting hole, the first force application portion is provided on an outer wall of the main body portion, and the guided portion is located in the first mounting hole.

Further, the movable member further comprises a clamping block which can be detached from the main body part, the guided part is arranged on the clamping block, a first through hole is formed in the circumferential wall of the first mounting hole, the clamping block is mounted on the outer wall of the main body part, and the guided part penetrates through the first through hole and extends inwards in the radial direction of the first mounting hole.

The developing cartridge with the structure has the advantages that the guided part is arranged to be detachable from the main body part, and the movable component is conveniently arranged on the guide part, so that the whole structure is simple and the installation is convenient.

Further, the stress part is a protruding part with a slope or an arc-shaped surface.

The developing box with the structure has the advantages that the stress part is arranged to be the protruding part with the inclined plane or the arc-shaped surface, the protruding part can enable the detected component to rotate when the protruding part receives acting force of the movable component, the inclined plane or the arc-shaped surface is arranged on the protruding part, the movable component can move on the protruding part and apply acting force to the protruding part, the detected component rotates, the matching effect of the structure is better, the structure is simpler, and the manufacturing cost is low.

Further, during the detection, the movable member moves from a third position to a fourth position, the detected member rotates to the second position when the first urging portion moves in a direction to approach the top of the protruding portion, and the detected member rotates to the first position when the first urging portion moves in a direction to move away from the top of the protruding portion, in a process in which the first urging portion applies the urging force to the force receiving portion.

With the developing cartridge having the above-described structure, the detected member can be reciprocally rotated between the first position and the second position during the movement of the movable member from the third position to the fourth position, thereby achieving detection.

Further, the developing cartridge further includes an elastic member configured to apply a force to the detected member so that the detected member returns from the second position to the first position.

The developing cartridge having the above-described structure is advantageous in that the elastic member can smoothly return the detected member to the first position when the apparatus-side detecting member cannot return the detected member to the first position or the detected member cannot smoothly return to the first position.

Further, the elastic member is a compression spring, an elastic sponge, an elastic rubber, an elastic arm or a resilient rod.

The developing box with the structure has the advantages that the elastic component is a compression spring, elastic sponge, elastic rubber, an elastic arm or a rebound rod piece, the structure is simpler, the matching effect is good, and the manufacturing cost is low.

Further, the developing cartridge further includes a rotary member on which the guide is provided.

The developing box with the structure has the advantages that the guide piece is arranged on the rotating piece, the situation that the structure of the guide piece is more complicated due to the fact that the guide piece is separately arranged is avoided, and the structure of the developing box can be simpler.

Further, the rotating member is any one of a stirring member gear, a developing roller gear, a powder feeding roller gear, a stirring member, a developing roller or a powder feeding roller.

The developing box with the structure has the advantages that the stirring member gear, the developing roller gear, the powder feeding roller gear, the stirring member, the developing roller or the powder feeding roller are common parts in the developing box, all the parts can rotate by receiving the driving force from the driving force receiving member, and the guide piece is arranged on the parts, so that some parts of the developing box are actually reduced, the space occupied by the parts is saved, and the structure of the developing box is simplified.

[ description of the drawings ]

FIG. 1 is a schematic view of the overall structure of a developing cartridge of embodiment 1;

FIG. 2 is a partially exploded schematic view of a developing cartridge of embodiment 1;

FIG. 3 is still another partially exploded schematic view of a developing cartridge of embodiment 1;

FIG. 4 is a schematic view of the structure of a movable member according to embodiment 1;

FIG. 5 is a schematic view showing the structure of a member to be inspected in embodiment 1;

fig. 6 is a schematic view of the fitting relationship among the detected member, the movable member, and the guide when the detected member is at the first position according to embodiment 1;

fig. 7 is a schematic view of the fitting relationship among the detected member, the movable member, and the guide when the detected member is at the second position according to embodiment 1;

FIG. 8 is a schematic view showing the fitting relationship among the member to be detected, the movable member, and the detecting member when the member to be detected is at the first position according to embodiment 1;

FIG. 9 is a sectional view taken in a direction parallel to the rotation axis of the stirring member when the movable member of embodiment 1 is at the third position;

FIG. 10 is a schematic view showing the fitting relationship among the detected member, the movable member, and the detecting member when the detected member is at the second position according to embodiment 1;

FIG. 11 is a partially exploded schematic view of a developing cartridge of embodiment 2;

FIG. 12 is a partially exploded schematic view of a developing cartridge according to embodiment 3;

FIG. 13 is a partially exploded schematic view of a developing cartridge of embodiment 4;

FIG. 14 is a partially exploded schematic view of a developing cartridge of embodiment 5;

the following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

[ detailed description ] embodiments

Example 1

As shown in fig. 1 to 3, the developing cartridge 100 includes a casing 1, a transmission assembly 2, a detected device 3, an agitating member 4, a developing roller 5, a powder feeding roller (not shown); the inside of casing 1 is equipped with the developer that holds the developer and holds storehouse 11, and the developer holds storehouse 11 and is equipped with first lateral wall 12 and second lateral wall 13 at the ascending both ends of developing box 100 length direction, installs drive assembly 2 on first lateral wall 12, still is equipped with first end cover 14 in the outside of drive assembly 2, installs second end cover 15 in the outside of second lateral wall 13. In the present embodiment, in the longitudinal direction of the developing cartridge 100, one end of the developing cartridge 100 having the driving member 2 is referred to as a first end 6, and the other end opposite thereto is referred to as a second end 7. A stirring member 4 having a first end portion 41 and a second end portion (not shown in the figure), the stirring member 4 being rotatably supported between the first side wall 12 and the second side wall 13 in the longitudinal direction of the casing 1; a first boss 121 is further provided on the first sidewall 12 of the developing cartridge 100, the first boss 121 is provided with a second through hole 122, and the first end portion 41 of the agitating member 4 protrudes from the second through hole 122 to receive the driving force from the transmission assembly 2; in the state where the developing cartridge 100 is in operation, the stirring member 4 is rotatable about a rotation axis thereof to stir the developer stored in the developer accommodating chamber 11. A powder feeding roller (not shown) for feeding the developer to the developing roller 5 is located at a powder outlet (not shown) of the developer accommodating chamber 11, and is rotatably supported between the first side wall 12 and the second side wall 13 in the length direction of the casing 1. The developing roller 5 is located outside the powder feeding roller (not shown), is rotatably supported between the first side wall 12 and the second side wall 13 in the longitudinal direction of the casing 1, and is in elastic contact with the powder feeding roller (not shown).

As shown in fig. 2, the power transmission assembly 2 is mounted on the outer side of the first side wall 12 of the housing 1, and in the present embodiment the power transmission assembly 2 includes a driving force receiving member 21, an agitating member gear 22, a powder feed roller gear 23, and a developing roller gear 24, wherein the driving force receiving member 21 has a first gear portion 211 and a second gear portion 212, and the driving force receiving member 21 is rotatable by receiving a driving force from the electrophotographic image forming apparatus side; the stirring member gear 22 includes a third gear portion 221 and a D-shaped mounting hole 222, and the stirring member gear 22 is mounted on the first end portion 41 of the stirring member 4 through the D-shaped mounting hole 222; a powder feeding roller gear 23 and a developing roller gear 24 are provided at the ends of the powder feeding roller (not shown in the figure) and the developing roller 5, respectively. The first gear portion 211 of the driving force receiving member 21 is meshed with the powder feeding roller gear 23, the second gear portion 212 of the driving force receiving member 21 is meshed with the stirring member gear 22 and the developing roller gear 24, the driving force receiving member 21 rotates by the driving force received from the electrophotographic image forming apparatus side when the developing cartridge 100 is in the operating state, the powder feeding roller gear 23 is rotated by the first gear portion 211 to transmit the driving force to the powder feeding roller (not shown), so that the powder feeding roller (not shown) rotates; the second gear portion 212 of the driving force receiving member 21 rotates the developing roller gear 24 and the stirring member gear 22, and transmits the driving force to the developing roller 5 and the stirring member 4 to rotate the developing roller 5 and the stirring member 4.

The specific structure of the device to be detected 3 of the present embodiment will be described in detail below with reference to fig. 1 to 4 and 9.

The detected device 3 includes a guide 31, a movable member 32, and a detected member 33, and the guide 31, the movable member 32, and the detected member 33 are all provided at the second end 7 of the developing cartridge 100. In the present embodiment, the guide 31 is a screw structure and is mounted on the second end of the stirring member 4, the driving force received by the driving force receiving member 21 is transmitted to the stirring member 4 through the cooperation of the second gear part 212 and the stirring member gear 22, so that the stirring member 4 rotates, and the guide 31 can rotate along with the rotation of the stirring member 4 because the guide 31 is disposed on the second end of the stirring member 4; the guide member 31 is provided with a guide portion, in this embodiment, the guide portion is a spiral groove 311 disposed on the outer circumferential surface of the guide member 31, the spiral groove 311 has two ends, one end close to the second side wall 13 is a first groove portion 312, and one end far away from the second side wall 13 is a second groove portion (not shown in the figure); the guide member 31 is further provided on its circumferential outer surface with a flat surface portion 313, the flat surface portion 313 being substantially perpendicular to the axial direction (i.e., the rotational axis direction) of the guide member 31, the flat surface portion 313 being adjacent to the spiral groove 311 and the flat surface portion 313 being farther from the second side wall 13 than the spiral groove 311 in the longitudinal direction of the developing cartridge 100. Alternatively, the guide 31 may be disposed at various positions and in various manners, for example, the guide 31 may be disposed on another rotating member of the developing cartridge 100 that can rotate by receiving the driving force, and the guide 31 may rotate along with the rotation of the rotating member, such as any one of the stirring member gear 22, the developing roller gear 24, the powder feeding roller gear 23, the stirring member 4, the developing roller 5, and the powder feeding roller (not shown); in addition, the guide 31 may not be disposed on the rotating member, but may be rotated by receiving the driving force transmitted by the transmission assembly 2 through a gear portion or a transmission block, etc. disposed on the transmission assembly 2, and the guide disposed on the second end of the stirring member 4 in this embodiment is only a preferred option. The movable member 32 includes a first force application portion and a guided portion, in this embodiment, the movable member 32 includes a main body portion 321 and a latch 322 detachable from the main body portion 321, the latch 322 is further provided with a mounting portion 323 and a rod portion 324, the guided portion 324a of the movable member 32 is located at one end of the rod portion 324, the main body portion 321 of the movable member 32 is further provided with a first mounting hole 325 and a mounting groove 327, a circumferential wall of the first mounting hole 325 is provided with a first through hole 326, the mounting portion 323 on the latch 322 is adapted to the mounting groove 327, when the latch 322 is assembled on an outer wall of the main body portion 321, the mounting portion 323 of the latch 322 is assembled on the mounting groove 327, the rod portion 324 is inserted into the first mounting hole 325 of the main body portion 321 through the first through hole 326 and protrudes into the first mounting hole 325 in a radial direction of the first mounting hole 325, so that the guided portion 324a is; the movable member 32 may be mounted by first inserting the guide 31 through the first mounting hole 325 of the body portion 321, then fitting the latch 322 on the outer wall of the body portion 321, and inserting the rod portion 324 into the spiral groove 311, thereby completing the mounting of the movable member 32 on the guide 31. As shown in fig. 3, 4, and 9, the guided portion 324a of the movable member 32 is located at one end of the rod portion 324, and after the movable member 32 is mounted on the guide 31, the guided portion 324a is inserted into the spiral groove 311 of the guide 31; during the rotation of the guide member 31, the guided portion 324a may receive the force of the spiral groove 311 to be guided by the spiral groove 311 due to the rotation of the spiral groove 311; the outer wall of the main body portion 321 of the movable member 32 is provided with a projection 328, the projection 328 extending outward in the radial direction of the first mounting hole 325, and a first force application portion 328a provided on the projection 328 and configured to apply a force to the detected member 33 during detection; alternatively, in a new unused developing cartridge 100, the shaft portion 324 may be in an abutting state or a non-abutting state with the spiral groove 311 after being inserted into the spiral groove 311, as long as the guided portion 324a abuts against the spiral groove 311 and receives a force when the spiral groove 311 rotates during the detection; further, the guided portion may also be configured as a retractable protrusion structure located within the first mounting hole 325, as long as the guided portion can be engaged with the spiral groove 311 after the movable member 32 is mounted on the guide 31. The detected member 33 is provided with a second mounting hole 331 and a groove 332, the second side wall 13 is provided with a second convex column 131 and a third convex column 132, the second end cover 15 is provided with a fourth convex column (not shown) and an opening 133, the second mounting hole 331 has two ends, one end of the second mounting hole is sleeved on the second convex column 131, and the other end of the second mounting hole is sleeved on the fourth convex column (not shown), so that the detected member 33 can be supported between the second side wall 13 and the second end cover 15 in a reciprocating rotation manner, and the third convex column 132 on the second side wall 13 is inserted into the groove 332 of the detected member 33, so that the rotation of the detected member 33 can be limited. The second end cap 15 is provided with an opening 133 so that the detected member 33 can come into contact with an external detecting member when the developing cartridge 100 is loaded into the electrophotographic image forming apparatus; the detected member 33 has a force receiving portion for receiving the force from the movable member 32 and a second force applying portion 333 for applying the force to the detecting member provided in the image forming apparatus, the force receiving portion may be provided one or more, the force receiving portion may be provided as a projection having an inclined surface or an arc-shaped surface, the number and specific shape and structure of the force receiving portions may be preset according to the printable amount of the new developing cartridge 100 and the specification of the developing cartridge 100, and the conditions of the printable amount, the specification and the like of the new cartridge and the new cartridge of different models may be detected by providing different numbers of force receiving portions; in this embodiment, two force-receiving portions of the detected member 33 are provided, which are respectively a first protruding portion 334 and a second protruding portion 335 with the same shape and structure, two inclined surfaces are provided on the first protruding portion 334 and the second protruding portion 335, that is, a first inclined surface 33a and a second inclined surface 33b, and a joint of the first inclined surface 33a and the second inclined surface 33b (that is, a top portion 33c of the first protruding portion and the second protruding portion) is an arc-shaped surface; the first and second protrusions 334 and 335 are spaced apart from each other by a predetermined distance, and smooth surfaces having the same shape and structure, i.e., first, second, and third surfaces 33d, 33e, and 33f, are provided at both sides of the first and second protrusions 334 and 335.

Next, the interaction process between the guide 31, the movable member 32, the detected member 33, and the detecting member F provided in the electrophotographic image forming apparatus will be described with reference to fig. 3 to 10.

The detecting member F is normally provided in the electrophotographic image forming apparatus, and when a new developing cartridge 100 is loaded into the electrophotographic image forming apparatus and is not in operation, the detecting member F may be subjected to the pressing force of the detected member 33, as shown in fig. 8, while the detecting member F is in a state, referred to as an initial state of the detecting member F in the present embodiment, with respect to the developing cartridge 100 by the pressing force of the detected member 33; when the detected member 33 is rotated by the first protruding portion 334 or the second protruding portion 335 of the detected member 33 being pressed by the movable member 32 during the detection of the developing cartridge 100 by the electrophotographic image forming apparatus, the detected member 33 further presses against the detecting member F, the initial state of which can be further changed, and fig. 10 shows an example in which the initial state of the detecting member F is changed.

As shown in fig. 3, 5, 6, 8, 9, an unused new developing cartridge 100, when loaded into the electrophotographic image forming apparatus and not starting to detect, the movable member 32 is set in advance at a position where the shaft portion 324 of the movable member 32 is inserted at the first groove portion 312 of the spiral groove 311, and the position where the movable member 32 is located is a third position where the movable member 32 can receive the urging force of the spiral groove 311 when the guide 31 rotates and move in the longitudinal direction of the developing cartridge 100 under the guide of the spiral groove 311, as shown in fig. 9; the first urging portion 328a of the movable member 32 does not press against the force receiving portion of the detected member 33, the first urging portion 328a abuts on the first surface 33d of the detected member 33 at the time when the detected member 33 is at the first position where the detected member 33 is configured to press against the detecting member F provided in the image forming apparatus at the time when the detecting member F is in the initial state; as shown in fig. 6, the detected member 33 is in the first position.

As shown in fig. 2, 4 to 10, when the electrophotographic image forming apparatus starts detection, the driving force receiving member 21 receives the driving force from the electrophotographic image forming apparatus and transmits the driving force to the stirring member 4 through the stirring member gear 22, so that the stirring member 4 rotates, the guide 31 provided at the second end portion of the stirring member 4 rotates along with the rotation of the stirring member 4, the guided portion 324a receives the urging force of the spiral groove 311 and moves the movable member 32 in the direction away from the second side wall 13 under the guidance of the spiral groove 311 along with the rotation of the guide 31 in the longitudinal direction of the developing cartridge 100, the first urging portion 328a provided on the movable member 32 first urges against the first slope 33a of the first protrusion 334 during the movement of the movable member 32, and the detected member 33 rotates in the a direction under the urging force of the first urging portion 328a, the detected member 33 presses against the detecting member F provided in the electrophotographic image forming apparatus so that the initial state of the detecting member F is changed; in the process that the first force application portion 328a of the movable mechanism 32 moves in the direction approaching the top portion 33c of the first protrusion 334 along the first slope 33a of the first protrusion 334, the detected member 33 gradually rotates in the a direction under the urging force of the first force application portion 328a, the detected member F provided in the electrophotographic image forming apparatus gradually moves under the urging of the detected member 33 as the detected member 33 rotates, as shown in fig. 5, 7, 10, when the first force application portion 328a moves to the top portion 33c, the detected member is at the second position at which the detected member 33 has rotated by the maximum angle in the a direction, and in the process that the first force application portion 328a moves in the direction approaching the second surface 33e along the second slope 33b of the first protrusion 334 over the top portion 33c of the first protrusion 334, since the detection member F provided in the electrophotographic image forming apparatus has the restoring force to the initial state, the detecting member F is pressed against the detected member 33 to a certain degree, so that the detected member 33 gradually rotates in the opposite direction of a under the force of the detecting member F, when the first force application part 328a presses against the second surface 33e (i.e. the first force application part 328a is separated from the first protrusion 334), the detected member 33 returns to the first position, the detecting member F can return to the initial state, and thus, the detected member 33 completes one reciprocating rotation between the first position and the second position; as the movable member 32 continues to rotate, the first force application portion 328a of the movable member 32 presses against the second protrusion 335 of the detected member 33, the detected member 33 repeats the movement process when the first force application portion 328a presses against the first protrusion 334, the detected member 33 realizes reciprocating rotation between the first position and the second position and constantly changes the state of the detected member during the rotation process; during the movement of the movable member 32, the guided portion 324a finally moves to the planar portion 313 of the guide 31, at which time the guided portion 324a disengages from the spiral groove 311, the movable member 32 is in the fourth position, since the planar portion 313 is perpendicular to the axial direction of the guide 31, at which time the rod portion 324 does not move with the rotation of the guide 31, the first force application portion 328a of the movable member 32 abuts at the third surface 33F, the detected member 33 is in the first position, and the detection member F returns to the initial state; the electrophotographic image forming apparatus thus far completes the detection of the developing cartridge 100; during the above-mentioned detection, the movable member 32 cannot return by itself from the fourth position to the third position after moving from the third position to the fourth position, i.e. the process is irreversible; the operator is required to make manual adjustments if it is desired to adjust the movable member 32 from the fourth position back to the third position.

Example 2

As shown in fig. 11, the developing cartridge 200 of embodiment 2 is substantially the same in structure as the developing cartridge of embodiment 1, mainly differing in that the developing cartridge 200 in embodiment 2 further includes an elastic member; in this embodiment, the elastic member is a compression spring 208, the compression spring 208 has two free ends, one end of the compression spring 208 is sleeved on the mounting post 20336 of the detected member, the other end of the compression spring is pressed against the second end cap 2015, and the compression spring 208 has an elastic force on the detected member 2033; the compression spring 208 may be compressed to store an elastic force during the rotation of the detected member 2033 from the first position to the second position, and release the elastic force during the rotation of the detected member 2033 from the second position to the first position, so that the detected member 2033 smoothly returns from the second position to the first position.

Example 3

As shown in fig. 12, a developing cartridge 300 of embodiment 3 is substantially the same in structure as the developing cartridge of embodiment 1, mainly differing in that the developing cartridge 300 of embodiment 3 further includes an elastic member; in this embodiment, the elastic member is an elastic sponge 308, one end of the elastic sponge 308 abuts against the detected member 3033, and the other end abuts against the second end cover 3015, and the elastic sponge 308 has an elastic force on the detected member 3033; the elastic sponge 308 may be compressed to store an elastic force during the rotation of the detected member 3033 from the first position to the second position, and release the elastic force during the rotation of the detected member 3033 from the second position to the first position, so that the detected member 3033 may smoothly return to the first position from the second position. Alternatively, the elastic member may use elastic rubber.

Example 4

As shown in fig. 13, a developing cartridge 400 of embodiment 4 is substantially the same in structure as the developing cartridge of embodiment 1, mainly differing in that the developing cartridge 400 in embodiment 4 further includes an elastic member; in this embodiment, the elastic member is an elastic arm 408 having one end fixed to the detected member 4033, the elastic arm 408 has a free end 4081, the free end 4081 abuts against the second end cap 4015, and the elastic arm 408 has an elastic force on the detected member 4033. The elastic arm 408 may be compressed to store an elastic force during rotation of the detected member 4033 from the first position to the second position, and release the elastic force during return of the detected member from the second position to the first position, so that the detected member 4033 can smoothly return from the second position to the first position.

Example 5

As shown in fig. 14, the developing cartridge 500 of embodiment 5 is substantially the same in structure as the developing cartridge of embodiment 1, mainly differing in that the first force application portion of the movable member 5032 in embodiment 5 is provided on a protrusion 50324 having a cylindrical shape; the developing cartridge 500 further includes an elastic member 508, the elastic member 508 in this embodiment is a resilient lever 508 provided on the detected member 5033, the resilient lever 508 has an abutting portion 5081, the abutting portion 5081 abuts on the second side wall 5013, the protrusion 50324 abuts on the detected member 5033, and the resilient lever 508 and the first protrusion 50334 and the second protrusion 50335 of the detected member 5033 are spaced apart from each other so that the protrusion 50324 does not interfere with the resilient lever 508 during movement. The rebound lever 508 is stretched due to the abutment portion 5081 of the rebound lever 508 abutting against the second side wall 5013 during the rotation of the detected member 5033 from the first position to the second position, and the detected member 5033 is smoothly rotated from the second position to the first position by the elastic restoring force of the rebound lever 508 during the return of the detected member 5033 from the second position to the first position.

The above embodiments are only used to illustrate the technical solutions of the present invention, and the scope of the present invention is not limited thereto, and those skilled in the art should understand that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced, for example, the shape and number of the force-receiving portion of the detected member may be set as required; and such modifications or substitutions do not depart from the spirit and scope of the present invention in its essence.

Claims (12)

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

a housing having a housing bin that houses a developer; the method is characterized in that:

the developing cartridge further includes:

a guide member rotatably provided at one end in a longitudinal direction of the developing cartridge, the guide member being provided with a guide portion;

a movable member provided with a first force application portion and a guided portion;

the detected component comprises at least one force-bearing part.

2. A developing cartridge according to claim 1, wherein:

during the detection, at least a part of the guide portion abuts against the guided portion, and the movable member is guided by the guide.

3. A developing cartridge according to claim 1, wherein:

the guide portion is a spiral groove provided on a surface of the guide member.

4. A developing cartridge according to claim 3, wherein:

the guide piece is further provided with a plane portion perpendicular to the axial direction of the guide piece.

5. A developing cartridge according to claim 1, wherein:

the movable member includes a main body portion provided with a first mounting hole, the first force application portion is provided on an outer wall of the main body portion, and the guided portion is located in the first mounting hole.

6. A developing cartridge according to claim 5, wherein:

the movable component further comprises a clamping block which can be detached from the main body part, the guided part is arranged on the clamping block, a first through hole is formed in the circumferential wall of the first mounting hole, the clamping block is mounted on the outer wall of the main body part, and the guided part penetrates through the first through hole and extends inwards along the radial direction of the first mounting hole.

7. A developing cartridge according to claim 1, wherein:

the stress part is a protruding part with an inclined plane or an arc-shaped plane.

8. A developing cartridge according to claim 7, wherein:

during the detection, the movable member moves from a third position to a fourth position, the detected member rotates to the second position when the first force application portion moves in a direction approaching the top of the protruding portion in a process in which the first force application portion applies the force to the force receiving portion, and the detected member rotates to the first position when the first force application portion moves in a direction away from the top of the protruding portion.

9. A developing cartridge according to claim 8, wherein:

the developing cartridge further includes an elastic member configured to apply a force to the detected member so that the detected member returns from the second position to the first position.

10. A developing cartridge according to claim 9, wherein:

the elastic component is a compression spring, an elastic sponge, elastic rubber, an elastic arm or a rebound rod piece.

11. A developing cartridge according to any one of claims 1-10, wherein:

the developing cartridge further includes a rotary on which the guide is provided.

12. A developing cartridge according to claim 11, wherein:

the rotating piece is any one of a stirring component gear, a developing roller gear, a powder feeding roller gear, a stirring component, a developing roller or a powder feeding roller.

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