CN209765265U - Developing box - Google Patents

Abstract

The utility model discloses a developing box, detachably install to the image forming device who has detecting element, developing box includes: a housing; a driving force receiving member provided at one side of the housing, receiving and transmitting a driving force from the image forming apparatus; a detected unit that can receive the driving force transmitted by the driving force receiving member; the detected unit comprises a detection gear and a detection component; the detecting member may contact the detecting unit and be detected at a first rotational speed and a second rotational speed successively; the second rotational speed is greater than the first rotational speed; an urging means is also included that urges the detection member to transition from a first rotational speed to a second rotational speed. The utility model discloses it is simple to be detected unit structure, and is not high to the production technology requirement, and product low in production cost can not appear detecting the problem that the component reported the mistake moreover.

Description

Developing box

Technical Field

the utility model relates to a developing box especially relates to a developing box is by detection unit.

Background

in a related-art image forming apparatus such as a laser printer, a developing cartridge is attachable to and detachable from a main body of the image forming apparatus. After the developer in the developing cartridge is used up, it is necessary to take out the developing cartridge from the main body of the image forming apparatus and mount a new developing cartridge into the main body; or when a paper jam occurs, the developing cartridge is also taken out of the main body of the image forming apparatus and then loaded into the image forming apparatus. The image forming apparatus is generally provided with a detection unit; the image forming apparatus can determine specific information such as the model number, the capacity size, the freshness of the developing cartridge and the like according to the number of times the detecting unit is contacted, the time interval and the like. The detecting unit in the image forming apparatus in the prior art can determine the specific model of the developing cartridge by the speed of the rotating speed of the detecting member of the detected unit in the developing cartridge, and if the detecting unit in the image forming apparatus detects that the rotating speed of the detecting member in the developing cartridge is lower or higher than the preset value set by the image forming apparatus, an alarm message can be sent out in the image forming apparatus to prompt a cartridge error. However, the developing cartridge in the related art is detected by a complicated mechanism or has a low accuracy, and when the developing cartridge is mounted in the image forming apparatus, a mistake is liable to occur.

in the prior art, chinese patent CN106817911A discloses a detection gear of a developing cartridge, the detection gear and a detection protrusion are integrally formed, the detection gear has a first gear portion and a second gear portion in the axial direction of a developing roller, the first gear portion and the second gear portion are formed with partial gear teeth on a part of their respective circumferences, and can be respectively engaged with a stirring rack gear, wherein the diameter of the first gear portion is larger than the diameter of the second gear portion, the first gear portion is disposed further from the side wall of a developing cartridge housing in the axial direction, when the first gear portion is disengaged from the stirring rack gear, the second gear portion is further engaged with the stirring rack gear, at this time, the rotation speed of the detection gear is increased, and a detection unit in an image forming apparatus can identify the change of the rotation speed of the detection protrusion and output a corresponding signal, thereby identifying the model of the developing cartridge. However, the detection gear with the structure has extremely high requirements on materials and sizes, extremely high requirements on production process control, high production cost and frequent error reporting problem in the actual process.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a developing box to developing box manufacturing cost is high among the prior art has been solved, reports wrong problem easily, in order to solve above-mentioned technical problem, the utility model discloses a realize through following technical scheme: a developing cartridge detachably mountable to an image forming apparatus having a detecting unit, comprising: a housing in which a developer can be accommodated; a driving force receiving member provided at one side of the housing, receiving and transmitting a driving force from the image forming apparatus; a detected unit that can receive the driving force transmitted by the driving force receiving member; the detected unit comprises a detection gear and a detection component, and the detection gear and the detection component are arranged separately; the detecting member may contact the detecting unit and be detected at a first rotational speed and a second rotational speed successively; the second rotational speed is greater than the first rotational speed; an urging means is also included that urges the detection member to transition from a first rotational speed to a second rotational speed.

The urging device comprises an elastic member which can apply an external force to the detection member to urge the rotation speed of the detection member to be increased.

A flat surface and an inclined surface are provided on one side of the developing cartridge, and when the detecting member abuts against the flat surface, the detecting member rotates at a first rotational speed and is contactable with the detecting unit; when the detection member abuts against the inclined surface, the elastic member forces the detection member to rotate at a second rotational speed and to contact the detection unit.

The detection device further comprises a cover member, one end of the elastic member is abutted with the detection member, the other end of the elastic member is abutted with the cover member, and the elastic member can force the detection member to move towards one side close to the shell.

Still including the protecting cover, the plane with the inclined plane sets up on the protecting cover, protecting cover detachably install to the casing.

The detection component is provided with a guide post, and the detection component is positioned at a detection initial position when the guide post is abutted against the initial limiting part; when the guide post abuts against the stop limit portion, the detection member is located at a detection stop position.

The detection gear is arranged separately from the detection member, and the detection gear drives the detection member to rotate after the detection gear rotates for a preset time.

The detection component is provided with a limiting column, the detection gear is provided with a groove, and the limiting column can move relative to the groove.

the urging device is configured as a torsion spring.

The detection component is provided with an abutting inclined surface, and the torsion spring can apply force to the detection component and force the torsion spring to abut against the abutting inclined surface to be located at a detection termination position.

the utility model discloses the development box that implements detects the gear and separately sets up with the detection component, compels to push away the device and compels to push away the detection component and change to the second rotation rate from first rotation rate, simple structure, it is not high to the production technology requirement, and product low in production cost can not appear the problem that the detection component reported the mistake moreover.

Description of the drawings:

fig. 1 is a schematic structural view of a developing cartridge according to an embodiment of the present invention;

FIG. 2 is another schematic view of the developing cartridge according to the embodiment of the present invention;

Fig. 3 is an exploded view of a detected unit of the developing cartridge according to the embodiment of the present invention;

FIG. 4 is a schematic view of a cover member in an embodiment of the invention;

FIG. 5 is a schematic view of a protective cover in an embodiment of the invention;

FIG. 6 is an enlarged partial schematic view of A in FIG. 5;

Fig. 7 is a schematic diagram of a detection gear in an embodiment of the present invention;

Fig. 8 is another schematic diagram of the detection gear in the embodiment of the present invention;

fig. 9 is a schematic view of a detecting member in an embodiment of the present invention;

Fig. 10 is a schematic diagram of the detected unit located at the initial position in the embodiment of the present invention;

FIG. 11 is a schematic view of the detecting gear driving the detecting member to rotate together in the embodiment of the present invention;

FIG. 12 is a schematic view showing the effect of the detecting member on the image forming apparatus according to the embodiment of the present invention;

FIG. 13 is a schematic view showing the operation of the detecting unit and the image forming apparatus when the detecting member abuts against the inclined surface according to the embodiment of the present invention;

Fig. 14 is a schematic view showing the detection completed in the detection unit and the disengagement of the detection member from the detection gear according to the embodiment of the present invention.

Fig. 15 is a schematic view of the initial position of the detected unit in the second embodiment of the present invention;

FIG. 16 is a schematic view of the contact between the detected protrusion and the torsion spring according to the second embodiment of the present invention;

fig. 17 is a schematic view of the end position of the detected unit in the second embodiment of the present invention.

The specific implementation mode is as follows:

in order to make the purpose of the embodiment of the present invention, the technical solution and the technical effect are clearer, and the following description will be made in conjunction with the accompanying drawings to clearly and completely describe the technical solution of the developing cartridge of the present invention. Obviously, the described embodiment is only a preferred embodiment of the present invention, and not all embodiments, and other embodiments obtained without inventive work by those skilled in the art are included in the protection scope of the present invention based on the embodiments of the present invention.

Example one

As shown in fig. 1 to 3, the developing cartridge of the present invention includes a housing 9 configured to store developer therein; a driving force receiving member 10 for receiving a driving force from the image forming apparatus is provided on the left side of the housing 9; a gear train is further provided on the left side of the housing 9, and can transmit the driving force from the driving force receiving member 10; an agitating frame (not shown) located in the casing, both ends of which are supported by the casing, respectively, for agitating the developer located in the casing, and the structure of the agitating frame may be the same as that commonly found in the prior art; also on the right side of the housing is a transmission gear 17, and the transmission gear 17 may be mounted to a stirring frame (not shown) and may receive a driving force transmitted from the driving force receiving member 10 through the stirring frame (not shown); and a detected unit at a right side end of the housing and receiving a driving force from the transmission gear 17. The right side end of the developing cartridge of the present invention is also provided with a developing roller electrode 8 and a powder feeding roller electrode 7 for supplying electric power to a developing roller (not shown) and a powder feeding roller (not shown), respectively.

as shown in fig. 3, the detected unit of the present invention includes: a cover 11, a detection gear 12, a detection member 13, an elastic member 15, and a cover member 14. The protective cover 11 is made of a resin material, is detachably mounted to the right side of the housing 9, and can cover the transmission gear 17, so that the transmission gear 17 can be prevented from being interfered by external substances, so as to smoothly transmit the driving force to the detected unit; as shown in fig. 6, the protective cover 11 is provided with a flat surface 11b and a slope 11c, an initial stopper portion 11a and a final stopper portion 11d, the initial stopper portion 11a is configured as a projection projecting from the flat surface 11b, and the flat surface 11b extends around the positioning post 11 f; the inclined surface 11c extends continuously from the flat surface 11b, and is inclined downward from the flat surface 11 b; the termination stopper portion 11d is configured to be formed as a rib. One end of the elastic member 15 abuts against the detection member 13, and the other end abuts against the cover member 14. The cover member 14 is made of a resin material and is configured to be formed as shown in fig. 4, with a notch 14a formed to expose the detected portion 13c of the detecting member 13, and the cover member 14 further includes a cover portion 14b covering most of the detecting member 13.

As shown in fig. 7 to 8, the detection gear 12 is configured to have a full-tooth gear formed on the entire outer circumference thereof, having a plurality of gear teeth 12a, a groove 12b is provided on the inner circumference of the detection gear 12, the groove 12b is configured to be disposed around a portion of the inner circumference of the detection gear 12, a first stopper wall 12c and a second stopper wall 12d are provided at the start position and the end position of the groove 12b, respectively, and the detection gear 12 is further provided with a receiving hole 12 e.

As shown in fig. 9, the detecting member 13 includes a guide post 13a, a stopper post 13b, and a detected portion 13c that can be detected by a detecting unit of the image forming apparatus. The detection member 13 is configured in a substantially disk shape.

the detection process of the detected unit according to the present invention will be described in detail with reference to fig. 10 to 14. When the detection gear 12 is located at the initial position as shown in fig. 10, the limit post 13b on the detection member 13 abuts against the first limit wall 12c on the detection gear 12, and the guide post 13a abuts against the initial limit portion 11a on the protecting cover and is located on the plane 11b of the protecting cover 11 at the same time; when the detection gear 12 starts to rotate in the direction M as shown in fig. 10, the first stopper wall 12c rotates away from the stopper post 13b, the detection member 13 cannot receive the driving force from the detection gear 12, so the detection member 13 cannot rotate with the detection gear 12; the second limit wall 12d abuts against the limit post 13b of the detecting member 13 when the detecting gear 12 rotates by a predetermined angle, so that when the detecting gear 12 further rotates, the detecting gear 12 can bring the detecting member 13 into rotation together, the guide post 13a abuts against the plane 11b and receives the driving force transmitted from the detecting gear 12 and rotates together with the detecting member 13, the detecting member 13 rotates together with the detecting gear 12 at the rotation speed R1, when the detecting member 13 rotates at the speed R1, the detected part 13c can contact with the detecting unit 3 in the image forming apparatus and apply a force to the detecting unit 3, the detecting unit 3 rotates at the speed N1 when receiving the force of the detected part 13c, a control unit (not shown) in the image forming apparatus recognizes the rotation of the detecting unit 3 and outputs a signal, the detecting parts 13c can be provided in plurality and distributed at intervals along the circumferential direction of the detecting member, when the detecting portion 13c is provided in plural, when rotating along the plane 11b, the detecting unit 3 may be forcibly rotated by contacting the detecting unit 3 in the image forming apparatus plural times, thereby outputting signals plural times; when the detection gear 12 drives the detection member 13 to rotate further along the direction M, when the guide post 13a of the detection member 13 leaves the plane 11b to abut against the inclined plane 11c, the detection member 13 loses stable support because the inclined plane 11c is inclined to be closer to the housing relative to the plane 11b, and at this time, the elastic member 14 applies an elastic force to the detection member 13, so that the detection member 13 is forced to further rapidly rotate along the inclined plane 11c and the detection member 13 moves towards the side close to the housing; the stopper post 13b is disengaged from the detection gear 12, and the rotational speed R2 of the detection member 13 is greater than the rotational speed R1 of the detection gear 12 due to the elastic member 14; at this time, when the detecting member 13 rotates at the speed R2, the detecting member 13 comes into contact with the detecting unit 3 in the image forming apparatus and causes the detecting unit 3 to rotate at the speed N2, and a control unit (not shown) in the image forming apparatus can recognize a change in rotation of the detecting unit 3 and output a signal; so that the image forming apparatus can output different signals according to the rotation change of the detection member 13 in the developing cartridge, thereby recognizing the specific model of the developing cartridge; in the present embodiment, the detecting member 13 is kept in contact with the detecting unit 3 in the image forming apparatus at all times while rotating along the inclined surface 11 b. When the guide post 13a of the detecting member 13 rotates away from the inclined surface 11c, the detecting member 13 stops rotating, and the guide post 13a of the detecting member 13 abuts against the end limit part 11d and is limited at the end position; at this time, the stopper post 13b of the detection member is completely separated from the groove 12b of the detection gear so as not to contact the first stopper wall 12c and the second stopper wall 12d, and when the detection gear 12 continues to receive the driving force transmitted from the transmission gear 17 and continues to rotate, the detection member 13 is separated from the detection gear 12, and the detection member 13 does not rotate together with the detection gear 12 and stops at the end position, so that the detection member 13 completes the detection.

in the developing cartridge of the embodiment, the detected unit is provided with the plane and the inclined plane on the protecting cover, and when the detecting member moves along the inclined plane, the speed of the detecting member rotating along the inclined plane is forced to be greater than the speed of the detecting member rotating along the plane under the action of the elastic force of the elastic member; by providing the flat surface and the inclined surface on the protective cover, a change in the rotational speed of the detection member is achieved, and the detection unit in the image forming apparatus is kept in contact with the detection member at all times during the rotation of the detection member along the inclined surface. The utility model discloses development box is by the detection unit, simple structure, and the stable performance compares and to save manufacturing cost in prior art.

Example two

fig. 15-17 are schematic diagrams of the detected unit according to the second embodiment of the present invention; the function principle of the detected part 13C' and the detecting unit in the image forming apparatus in this embodiment is the same as that in the first embodiment, and will not be described herein again, and only how the detecting member realizes the rotation speed change will be described briefly. In the present embodiment, the detecting member 13 'and the detecting gear 12' are separately provided, provided on one side of the developing cartridge, and the detecting member 13 'is rotatable independently of the detecting gear 12'; when the detection gear 12 'is driven to rotate by the stirring frame gear 17, the detection gear 12' drives the detection member 13 'to rotate together at a first rotation speed, when the detection member 13' rotates to the position shown in fig. 15, the torsion spring 90 mounted on the side wall of the developing cartridge contacts with the detection member 13 'to apply a forward force F to the detection member 13', so as to force the detection member 13 to rotate further in the direction M, and the detection member 13 'rotates at a second rotation speed, which is greater than the first rotation speed as the detection member 13' receives the forward component force F of the torsion spring 90; when the detecting member 13 'rotates to the position shown in fig. 17, the detecting member 13' stops rotating, the torsion spring 90 abuts against the abutting inclined surface 13d ', the detecting member 13' is out of contact with the detecting gear 12 ', and the detecting unit 3 in the image forming apparatus can detect the change of the rotation speed of the detecting member 13' and output a corresponding signal, as described in embodiment 1, thereby identifying the specific model of the developing cartridge.

the developing cartridge of the present invention is provided with urging means such as the elastic member 15 of the first embodiment or the torsion spring 90 of the second embodiment; the variation in the rotational speed of the detection member is achieved in the first embodiment by the cooperation of the elastic member 15 and the inclined surface 11 c; the change in the rotational speed of the detection member is achieved in the second embodiment by the action of the torsion spring 90 and the detection member. The utility model discloses developing box detection gear and detection component separately set up, compel to push away the device and compel to push away the detection component and change to the second rotation rate from first rotation rate, simple structure, it is not high to the production technology requirement, and product low in production cost can not appear the problem that the detection component reported the mistake moreover.

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

Claims (10)

1. A developing cartridge detachably mountable to an image forming apparatus having a detecting unit, comprising:

a housing in which a developer can be accommodated;

A driving force receiving member provided at one side of the housing, receiving and transmitting a driving force from the image forming apparatus;

A detected unit that can receive the driving force transmitted by the driving force receiving member; the detected unit comprises a detection gear and a detection component;

The detecting member may contact the detecting unit and be detected at a first rotational speed and a second rotational speed successively; the second rotational speed is greater than the first rotational speed; characterized in that it further comprises urging means which urge said detection member from said first rotation speed to said second rotation speed.

2. The developing cartridge according to claim 1, wherein said urging means includes an elastic member which applies an external force to said detecting member to urge the rotational speed of said detecting member to increase.

3. A developing cartridge according to claim 2, wherein a flat surface and a slope surface are provided on one side of said developing cartridge, and when said detecting member abuts against said flat surface, said detecting member rotates at a first rotational speed and is contactable with said detecting unit; when the detection member abuts against the inclined surface, the elastic member forces the detection member to rotate at the second rotation speed and to contact the detection unit.

4. a developing cartridge according to claim 3, further comprising a cover member, one end of said elastic member abutting against said detecting member and the other end abutting against said cover member, said elastic member urging said detecting member toward a side close to said casing.

5. The developing cartridge as claimed in claim 3, further comprising a cover, the flat surface and the inclined surface being provided on the cover, the cover being detachably mounted to the casing.

6. The developing cartridge according to claim 5, wherein an initial position-restricting portion and a final position-restricting portion are provided on the protective cover, and a guide post is provided on the detecting member, and when the guide post abuts against the initial position-restricting portion, the detecting member is located at a detection initial position; when the guide post abuts against the stop limit portion, the detection member is located at a detection stop position.

7. a developing cartridge according to claim 1, wherein said detection gear is provided separately from said detecting member, and said detection gear drives said detecting member to rotate after a predetermined time of rotation of said detection gear.

8. The developing cartridge according to claim 6, wherein the detecting member is provided with a stopper post, the detection gear is provided with a groove, and the stopper post is movable relative to the groove.

9. a developing cartridge according to claim 2, wherein said urging means is configured as a torsion spring.

10. A developing cartridge according to claim 9, wherein an abutment slope is provided on said detecting member, and said torsion spring is adapted to apply a force to said detecting member and to urge said torsion spring into abutment with said abutment slope to be located at a detection end position.