CN110824871A - developer cartridge - Google Patents

Abstract

The present invention relates to a developing cartridge detachably mountable to an image forming apparatus provided with a detected member, including a housing, a power receiving member for receiving a driving force from an outside and a detecting member for engaging with an external detected member so that the developing cartridge is detectable by the image forming apparatus, the developing cartridge further including a transmission lever rotatably mounted in the housing, the transmission lever being driven by the driving force received by the power receiving member; the detecting member is coaxially arranged with the transmission rod, and when the power receiving member receives external driving force, the detecting member can be driven by the transmission rod, so that the detecting end where the detecting member is located does not need to be provided with a power transmission part, the design reduces the number of gears required by the developing box, simplifies the structure of the developing box, and finally reduces the cost of the developing box.

Description

developer cartridge

technical field

The present invention relates to the field of electrophotographic imaging, in particular to a developing cartridge detachably installed in an electrophotographic imaging device.

Background technique

The developing cartridge is usually installed in the imaging device in a detachable manner. Currently, there are two installation methods. One is that the developing cartridge is directly installed into the main body of the imaging device, and the other is that the developing cartridge is firstly installed to a drum unit. Then, along with the drum unit, it is installed to the main body of the image forming apparatus, no matter how the developing cartridge is installed, in order to make the developing cartridge be accurately recognized by the image forming apparatus, the existing developing cartridge is provided with a pre-set component for connecting with the image forming apparatus. A combined detection member and a power receiving member for receiving driving force from a power output member provided in the image forming apparatus.

The detection piece is driven by the power receiving piece receiving the driving force. When the detection piece and the power receiving piece are arranged on the same side, the driving force can be transmitted between the two through gears. When the detection piece and the power receiving piece are arranged on different sides, In the conventional developing cartridge, the driving force is transmitted to the side where the detecting member is mounted through the stirring shaft installed in the developing cartridge, and then the driving force is transmitted to the detecting member through the gear. Obviously, in order to drive the detection member, for the structure in which the detection member and the power receiving member are located on different sides of the developing cartridge, a set of gears needs to be installed on both sides of the developing cartridge respectively. The material cost also increases the assembly cost of the developing cartridge.

SUMMARY OF THE INVENTION

The present invention provides a developing cartridge, which can simplify the structure of the developing cartridge and reduce the cost by redesigning the path of the power receiving member to transmit the driving force to the detecting member. Specifically, the present invention adopts the following technical solutions:

A developing cartridge, detachably installed in an image forming apparatus provided with a detected member, includes a casing, a power receiving member and a detecting member respectively located at two longitudinal ends of the casing, wherein the power receiving member is used for receiving a driving force from the outside, and detecting The member is used for combining with the external detected member so that the developing cartridge can be detected by the image forming device, and the developing cartridge further includes a transmission rod rotatably installed in the housing, the transmission rod being driven by the driving force received by the power receiving member; The detection member is coaxially arranged with the transmission rod, and when the power receiving member receives an external driving force, the detection member can be driven by the transmission rod.

The developing cartridge further includes a stirring member rotatably installed in the housing, and the rotational axis of the transmission rod is located above the rotational axis of the stirring member in the up-down direction of the developing cartridge.

The developing cartridge further includes a third gear and a fourth gear arranged on the same side as the power receiving member and meshing with each other, wherein the third gear receives the driving force of the power receiving member, and the fourth gear and the detecting member are respectively located at both longitudinal ends of the transmission rod , preferably, the fourth gear is a toothless gear.

The casing includes a lower casing and an upper casing that are combined in an up-down direction, and the lower casing and the upper casing form a cavity for accommodating toner, and the transfer lever is arranged in the upper casing in the left-right direction of the developing cartridge. Extending, preferably, the transmission rod passes through the upper casing in the left-right direction.

The transmission rod is cylindrical overall and has a smooth outer surface.

The developing cartridge further includes a developing member and a powder feeding member rotatably installed in the housing, and a power receiving member arranged on the same side as the detecting member, the power receiving member simultaneously supplying power received from the image forming device to the developing member and the powder feeding member. Powder delivery.

As mentioned above, the detection piece is arranged coaxially with the transmission rod. When the power receiving piece receives an external driving force, the detection piece can be driven by the transmission rod. Therefore, there is no need to install the power transmission part at the detection end where the detection piece is located. The design reduces the number of gears required by the developing cartridge, simplifies the structure of the developing cartridge, and ultimately reduces the cost of the developing cartridge.

Description of drawings

1A is a perspective view of the developing cartridge according to the present invention as viewed from the upper left.

1B is a perspective view of the developing cartridge according to the present invention when the end cap is hidden and viewed from the upper left.

2 is a perspective view of the developing cartridge according to the present invention when the end cap is hidden and viewed from the upper right.

3A is a perspective view of the developing cartridge according to the present invention when the end cap and the upper casing are hidden, viewed from the upper left.

3B is a perspective view of the developing cartridge according to the present invention when the end cap and the upper case are hidden, viewed from the upper right.

Detailed ways

The embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In order to make the description clearer, the developing cartridge is first defined as follows: the length direction of the developing cartridge is the left-right direction (longitudinal direction), the width direction is the front-rear direction (lateral direction), the thickness It is an up-down direction (vertical direction), and in practice, the developing cartridge is installed forward and disassembled in the front-rear direction.

1A is a perspective view of the developing cartridge according to the present invention when viewed from the upper left; FIG. 1B is a perspective view of the developing cartridge according to the present invention viewed from the upper left after the end cover is hidden; FIG. 2 is the developing cartridge according to the present invention when hidden Figure 3A is a perspective view of the developing cartridge of the present invention when the end cap and the upper casing are hidden from the top left; Figure 3B is the developing cartridge of the present invention when the end cap is hidden. A perspective view from the upper right after the upper case is attached.

The developing cartridge 1 includes a casing 2, a plurality of rotating members rotatably installed in the casing 2, a power receiving member 11 and a detection member 6 respectively located at both longitudinal ends of the casing 2, and a left end cap 3 and a right end cap 4, wherein, The power receiving member 11 and the detecting member 6 are exposed through the left end cap 3 and the right end cap 4, respectively, the power receiving member 11 is used to receive the driving force from the outside (imaging device), and the detecting member 6 is used to communicate with the external (imaging device) preset by. The detection pieces are combined, so that the developing cartridge 1 is detected by the imaging device. Therefore, the side where the power receiving piece 11 is located can be called the driving end, the side where the detection piece 6 is located can be called the detection end, and the casing 2 is driving The power receiving member 11 protrudes leftward relative to the left side wall 2a, and the detection member 6 protrudes rightward relative to the right side wall 2b in the left-right direction.

The casing 2 includes a lower casing 21 and an upper casing 22 that are combined in an up-down direction. The lower casing 21 and the upper casing 22 enclose a cavity for accommodating toner powder. Next, the toner is supplied to the outside of the developing cartridge; the plurality of rotating members include a developing member 51 for conveying the toner to the outside, a toner feeding member 52 for conveying the toner to the developing member, and a toner for stirring the toner The stirring member 53, the developing member 51, the powder feeding member 52 and the stirring member 53 are all rotated by receiving the driving force of the power receiving member 11; as shown in the figure, the developing cartridge 1 further comprises a The transmission rod 54 is used to transmit the driving force of the power receiving member 11 to the detection member 6 . In the embodiment of the present invention, the detection member 6 and the transmission rod 54 are coaxial.

Further, the developing cartridge 1 further includes a gear set 7 arranged on the same side as the power receiving member 11, the gear set 7 is used to transmit the driving force to the transmission rod 54, and at the detection end, the detection member 6 is directly installed on the transmission rod 54, when the transmission rod 54 is driven, the detection member 6 is also driven to rotate around the rotation axis L2; the gear set 7 includes a first gear 71 combined with the power receiving member 11, an intermediate gear 72, and a stirring member 53. The third gear 73 and the fourth gear 74 combined with the transmission rod 54, that is to say, the fourth gear 74 and the detection member 6 are located at the longitudinal ends of the transmission rod 54 respectively; The third gear 73 is engaged, and at the same time, the third gear 73 is also engaged with the fourth gear 74. Therefore, the driving force received by the power receiving member 11 passes through the first gear 71, the intermediate gear 72, the third gear 73 and the fourth gear in sequence. 74 is transmitted to the transmission rod 54, and the third gear 73 also drives the stirring member 53 to rotate about the rotation axis L1.

Preferably, the transmission rod 54 is arranged to extend in the upper casing 22 in the left-right direction. More preferably, the transmission rod 54 passes through the upper casing 22 in the left-right direction. Therefore, the connection between the fourth gear 74 and the detection member 6 is Installation and disassembly are more convenient.

In the up-down direction, the rotation axis L2 is located above the rotation axis L1. The advantage of this design is that when there is a lot of toner contained in the housing 2, the transmission rod 54 located above the stirring member 53 will not cause excessive flow of the toner. There are many obstacles, and when the stirring blade 531 installed on the stirring member 53 rotates to the top of the cavity with the stirring member 53, the stirring blade 531 interferes with the transmission rod 54, and the toner adhering to the stirring blade 531 is shaken. falling, which can prevent the toner from agglomerating on the stirring blade 531; in the front-rear direction, the rotation axis L2 is located slightly behind the rotation axis L1, and this design can further reduce the influence of the transmission rod 54 on the fluidity of the toner, thereby ensuring that the carbon Smooth powder supply; as shown in FIG. 3A and FIG. 3B , the transfer rod 54 is cylindrical as a whole and has a smooth outer surface, so the influence of the transfer rod 54 on the fluidity of the toner can be further reduced.

When the developing cartridge 1 is installed in the imaging device, the detection member 6 is driven to rotate, so that the developing cartridge 1 is detected by the imaging device. After the imaging device is detected, the detection member 6 no longer needs to continue to rotate. The fourth gear 74 at the other end of the transmission rod 54 is set as a tooth-missing gear. As shown in the figure, a part of the circumferential surface of the fourth gear 74 (the tooth-missing part) is a smooth surface, that is, no teeth are provided in this part. When the missing tooth portion of the fourth gear 74 is opposite to the third gear 73, the fourth gear 74 will no longer be driven by the third gear 73 and stop rotating, and further, the transmission rod 54 and the detection member 6 also stop rotating.

In fact, when the developing cartridge 1 is in operation, it not only needs to receive the driving force from the image forming device, but also needs to receive electric power from the image forming device. The power receiving member 8 supplies the power received from the image forming device to the developing member 51 and the powder feeding member 52 at the same time. This design also helps to simplify the structure of the developing cartridge 1, that is, it does not need to be separate developing members. 51 and the powder feeding member 52 are provided with power receiving members, and only one power receiving member 8 needs to be provided.

As another embodiment of the present invention, according to the working requirements of the detecting member 6, or considering the stability of the force transmission between the transmission rod 54 and the detecting member 6, the detection member 6 and the transmission rod 54 are arranged between the detection member 6 and the transmission rod 54. When implementing components such as a delay device or a buffer device, it is necessary to ensure that the detection member 6 and the transmission rod 54 are coaxial.

As mentioned above, the detection member 6 is disposed coaxially with the transmission rod 54. Preferably, the detection member 6 is directly installed at one end of the transmission rod 54. When the power receiving member 11 receives an external driving force, the detection member 6 can be transmitted The rod 54 is directly driven, so the detection end where the detection element 6 is located does not need to install power transmission components such as gears, belts, etc., but only the gear set 7 needs to be installed at the driving end. This design reduces the number of gears required by the developing cartridge 1. , the structure of the developing cartridge 1 is simplified, and finally, the cost of the developing cartridge 1 is reduced.

Claims (8)

1. A developing cartridge, detachably installed in an imaging device provided with a detected member, comprising a casing, a power receiving member and a detecting member respectively located at both longitudinal ends of the casing, wherein the power receiving member is used to receive a driving force from the outside , the detection member is used to combine with the external detected member, so that the developing cartridge can be detected by the imaging device, and it is characterized in that: The developing cartridge further includes a transfer lever rotatably mounted in the housing, the transfer lever being driven by the driving force received by the power receiving member; The detection member is coaxially arranged with the transmission rod, and when the power receiving member receives an external driving force, the detection member can be driven by the transmission rod. 2 . The developing cartridge according to claim 1 , wherein the developing cartridge further comprises a stirring member rotatably installed in the housing, and along the up-down direction of the developing cartridge, the rotational axis of the transmission rod is located above the rotational axis of the stirring member. 3 . . 3. The developing cartridge according to claim 1, wherein the developing cartridge further comprises a third gear and a fourth gear arranged on the same side as the power receiving member and meshing with each other, wherein the third gear receives the driving of the power receiving member The force, the fourth gear and the detection piece are respectively located at the longitudinal ends of the transmission rod. 4. The developing cartridge according to claim 3, wherein the fourth gear is a toothless gear. 5 . The developing cartridge according to claim 1 , wherein the casing comprises a lower casing and an upper casing that are combined in an up-down direction, and why the lower casing and the upper casing form a cavity for accommodating toner, The transfer lever is arranged to extend in the upper casing in the left-right direction of the developing cartridge. 6. The developing cartridge according to claim 5, wherein the transfer lever passes through the upper casing in the left-right direction. 7. The developing cartridge according to claim 1, wherein the transfer rod is cylindrical as a whole and has a smooth outer surface. 8. The developing cartridge according to claim 1, wherein the developing cartridge further comprises a developing member and a powder feeding member rotatably installed in the housing, and a power receiving member arranged on the same side as the detection member, the The power receiving member simultaneously supplies power received from the image forming apparatus to the developing member and the powder feeding member.

Images