CN108983577A - Handle box - Google Patents

Abstract

The invention provides a process box, comprising a box body, a photosensitive drum and a driving force transmission assembly, the driving force transmission assembly includes a driving gear, a driving force receiving head, a guide ring and a push rod, and the driving gear is connected to one shaft end of the photosensitive drum, The driving force receiving head has a rod and an end, one end of the rod is connected with the driving gear, and the end is located at the other end of the rod, and the push rod can be inserted into the end and the rod in a reciprocating manner along the axial direction of the driving force receiving head. In the shaft hole, a limit pin is set radially through the ejector rod, and a limit groove is set radially through the rod, and the limit pin can be inserted into the limit groove reciprocatingly along the axis direction of the driving force receiving head, and the guide ring Sleeved on the rod and abutting against the limit pin, the process box also includes a pull rod, which can control the guide ring to move back and forth along the axis of the driving force receiving head. The process cartridge can be dropped off and removed from the main unit smoothly, and the printing performance is stable.

Description

process box

technical field

The invention relates to the technical field of printing consumables, in particular to a processing box.

Background technique

An electrophotographic imaging forming device such as a laser printer is a device that uses the principle of electrophotography to form an image on an image forming medium such as paper through at least the processes of charging, exposure, development, transfer, fixing, and cleaning. Consumable materials used on imaging equipment are commonly called printing consumables. Usually, the toner powder consumed by developing is generally provided by the process cartridge, and when the toner powder in the process cartridge is used up, a new process cartridge is replaced.

The existing process box usually includes a powder bin, a driving part arranged on the powder bin to cooperate with the developing unit, a developing roller, a powder knife, a transmission gear, and a conductive end on the end cover of the processing box and a conductive contact on the conductive end. dots, and a developer unit including the waste toner box and photoconductor drum. The process box is placed in the image forming device, the driving part of the process box is coupled with the rotary transmission element arranged in the image forming device, and the drive part rotates with the image forming device transmission element to realize the circumferential rotational movement of the developing unit in the process box. The conductive contact at the conductive end of the process box is in contact with the conductive position on the imaging device, so that the developing components inside the process box are charged with positive voltage or negative voltage according to the structural characteristics. toner to develop the photosensitive drum, and then transfer the toner to the paper by transfer. When the toner in the process cartridge is exhausted, the process cartridge needs to be removed from the imaging unit.

The driving part of the existing processing box adopts the driving connection structure of the spherical universal joint. During the transportation process, the driving assembly is easy to disengage, so that the photosensitive drum or the developing roller cannot receive the driving force, and the processing box cannot be used normally.

Also have a kind of process cartridge in addition, the driving rod body in its driving assembly passes through the gear positioning assembly of the positioning drive, and can slide back and forth axially with respect to the gear, in the process of installing and dismounting the process cartridge, the driving assembly is easy to contact with the imaging device The transmission head is stuck, causing damage to the drive assembly and preventing the process cartridge from working properly.

Contents of the invention

In order to achieve the main purpose of the present invention, the present invention provides a process cartridge, aiming at improving the smoothness of the process of dropping the process cartridge from the machine and removing it from the main machine.

In order to realize the main purpose of the present invention, the present invention provides a kind of processing cartridge, comprises box body, photosensitive drum and driving force transmission assembly, and photosensitive drum is rotatably supported around the rotation axis between the two end walls of box body, and driving force transmission The assembly is connected to one shaft end of the photosensitive drum, the driving force transmission assembly includes a driving gear, a driving force receiving head, a guide ring and a push rod, the driving gear is connected to one shaft end of the photosensitive drum, and the driving force receiving head has a rod portion and an end portion , one end of the rod is connected to the drive gear, and the end is located at the other end of the rod. The ejector rod can be reciprocally moved along the axial direction of the driving force receiving head and inserted into the shaft hole of the end and the rod, and the ejector rod penetrates radially. The limit pin is arranged in the ground, and the limit groove is opened radially through the rod. The limit pin can be inserted into the limit groove by reciprocating movement along the axis direction of the driving force receiving head. The guide ring is sleeved on the rod and connected with the limit pin. The abutting contact, the process cartridge further includes a pull rod, which can control the guide ring to reciprocate along the axis direction of the driving force receiving head.

It can be seen that the guide ring is used to control the reciprocating movement of the guide ring along the axial direction of the driving force receiving head, so that the push rod is driven by the guide ring and the limit pin to move outside the protruding end of the driving force receiving head along the axial direction, or retract inward. The end moves to realize the smooth engagement and disengagement of the driving force receiving head of the processing box and the driving head of the printer, so that the processing box can be smoothly dropped from the machine and removed from the main machine. Moreover, the process box is lowered more stably, and the printing is more stable. The drive head of the printer and the driving force receiving head of the process box can be correctly and fully engaged, which improves the compatibility of the process box and is more cost-effective.

A further solution is that the box body is provided with a handle part extending along the axial direction of the photosensitive drum, the pull rod has a force receiving part and a pushing part, the force receiving part is located in the accommodating cavity of the handle part, and the force receiving part can control the pushing part to move along the direction of the photosensitive drum. Moving perpendicular to the axial direction of the rod part, the pushing part can control the guide ring to reciprocate along the axial direction of the driving force receiving head.

It can be seen that the force-receiving part is located in the accommodating chamber of the handle part. During the process of installing and dismounting the process cartridge, the user applies force to the force-receiving part while holding the handle part of the process cartridge, without any additional operation by the user. steps to improve the user experience without affecting the printing effect.

A further solution is that a first return elastic member is pressed between the force receiving portion and the side wall of the accommodation chamber, and the first return elastic member forces the force receiving portion away from the side wall of the accommodation chamber.

A further solution is that the process box also includes an end cover, and the end cover and the driving force transmission assembly are installed on the side of the box body on the same end face, and the end cover is provided with a guide groove extending along the axis direction perpendicular to the rod portion, and the pushing portion located in the guide groove.

It can be seen that the pushing part moves in the guiding groove along the extending direction of the guiding groove perpendicular to the axis of the rod part, which improves the working accuracy and stability of the pushing part.

A further solution is that a second return elastic member is pressed between the push part and the end cover, and the free end of the push part is provided with a raised part extending toward the direction of the guide ring, and the second return elastic part forces the raised part away from the guide ring. ring.

A further solution is that the free end of the pushing part is provided with a through hole at a position adjacent to the protruding part, and the through hole is sleeved on the rod part.

A further solution is that the force-receiving portion is located in the accommodating cavity extending along the axial direction of the photosensitive drum.

A further solution is that the force-receiving part is arranged parallel to the side wall of the accommodating cavity.

A further solution is that there are two first return elastic members, and the two first return elastic members are located side by side in the middle of the handle portion in the axial direction of the photosensitive drum.

A further solution is that the limit groove is provided adjacent to the end in the axial direction of the driving force receiving head, which can better control the stable movement of the ejector rod along the axial direction of the driving force receiving head.

Description of drawings

Fig. 1 is a first perspective structural view of an embodiment of a process cartridge of the present invention.

Fig. 2 is a structural view of the second viewing angle of the embodiment of the process cartridge of the present invention.

Fig. 3 is an exploded view of the cooperation of the end cover, the pull rod and the second return elastic member in the embodiment of the process cartridge of the present invention.

Fig. 4 is a structural diagram of a driving force transmission assembly in an embodiment of the process cartridge of the present invention.

Fig. 5 is an exploded view of the structure of the driving force transmission assembly in the embodiment of the process cartridge of the present invention.

Fig. 6 is a partial structural view of the embodiment of the process cartridge of the present invention in the first use state.

Fig. 7 is a partial structural view of the embodiment of the process cartridge of the present invention in the second use state.

The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

Detailed ways

1 and 2, the process cartridge 1 includes a box body 2, a photosensitive drum (not shown), an end cover 4, a pull rod 5 and a driving force transmission assembly 3, and the photosensitive drum is rotatably supported on both ends of the box body 2 around a rotation axis. Between the end walls, the driving force transmission assembly 3 is connected to one shaft end of the photosensitive drum, and the end cover 4 is installed on the side of the box body 2 at the same end face as the driving force transmission assembly 3 .

Referring to Fig. 4 and Fig. 5, the driving force transmission assembly 3 comprises a driving gear 34, a driving force receiving head 31, a guide ring 33 and a push rod 35, the driving gear 34 is connected to an axial end of the photosensitive drum, and the outer peripheral surface of the driving gear 34 There is a transmission ring gear 341 on it. The driving force receiving head 31 has a rod portion 311 and an end portion 312 , one end of the rod portion 311 is connected to the driving gear 34 , and the end portion 312 is located at the other end of the rod portion 311 . Wherein, the axis of the driving force receiving head 31 is coincident with the axis of the driving gear 34 . There are two claws 313 protruding from the end 312 . The two claws 313 are symmetrical about the axis of the driving force receiving head 31 . The two claws 313 can engage with the transmission head 8 of the printer.

The ejector rod 35 can be reciprocatingly inserted into the shaft hole of the end part 312 and the rod part 311 along the axial direction of the driving force receiving head 31. A limiting groove 314 is provided, and the limiting pin 32 can be reciprocally inserted into the limiting groove 314 along the axial direction of the driving force receiving head 31 . In this embodiment, the limiting groove 314 is disposed adjacent to the end portion 312 in the axial direction of the driving force receiving head 31 .

Referring to FIG. 3 , the pull rod 5 has a force receiving part 51 , a connecting part 52 and a pushing part 53 , and the connecting part 52 is used for connecting the force receiving part 51 and the pushing part 53 . The box body 2 is provided with a handle part 21 extending along the axial direction of the photosensitive drum, the force receiving part 51 is located in the accommodation chamber of the handle part 21, and the first reset is pressed between the force receiving part 51 and the side wall 211 of the accommodation chamber. The elastic member 6, the first return elastic member 6 forces the force-receiving portion 51 away from the side wall 211 of the accommodating cavity, and the first return elastic member 6 in this embodiment is a return spring. The force-receiving part 51 is located in the accommodating cavity extending along the axis direction of the photosensitive drum. The two first return elastic members 6 are located side by side in the middle of the handle portion 21 in the axial direction of the photosensitive drum.

The end cover 4 is provided with a guide groove 41 extending along the axis direction perpendicular to the rod portion 311, the push portion 53 is located in the guide groove 41, and the force receiving portion 51 can control the push portion 53 to move along the axis direction perpendicular to the rod portion 311, pushing The portion 53 can control the guide ring 33 to reciprocate along the axis direction of the driving force receiving head 31 . A first stopper plate 42 is arranged in the guide groove 41, and a second stopper plate 531 protrudes from the side of the push portion 53 toward the guide groove 41, and the first stopper plate 42 and the second stopper plate 531 are pressed against each other. There is a second return elastic member 7 extending in a direction perpendicular to the axis of the rod portion 311 , and in this embodiment the second return elastic member 7 is a return spring. The free end of the pushing part 53 is provided with a protruding part 532 extending toward the direction of the guide ring 33 , and the second reset elastic member 7 forces the protruding part 532 away from the guide ring 33 . The free end of the pushing part 53 defines a through hole 533 at a position adjacent to the protruding part 532 , and the through hole 533 is sleeved on the rod part 311 .

6 and 7, the drive head 8 of the printer can be stretched along its axial direction. When the process cartridge 1 needs to be placed inside the printer, the user holds the handle portion 21 of the process cartridge 1 to place the process cartridge 1 inside the printer. During the user's gripping process, the force-receiving part 51 of the pull rod 5 receives the gripping force and moves toward the side wall 211 of the accommodating cavity of the handle part 21, and the connecting part 52 drives the pushing part 53 to move along the axis direction perpendicular to the rod part 311. , that is, the protruding portion 532 of the pushing portion 53 moves toward the guide ring 33, so that the protruding portion 532 forces the guide ring 33 to move close to the end 312 of the driving force receiving head 31 along the axial direction of the driving force receiving head 31, and simultaneously drives the stopper The pin 32 drives the ejector rod 35 to move outside the protruding end 312 along the axial direction of the driving force receiving head 31 . At this time, the first return elastic member 6 and the second return elastic member 7 are both in a compressed state. When the process cartridge 1 is placed inside the printer, the top of the protruding end 312 of the push rod 35 acts on the drive head 8 of the printer, forcing the drive head 8 of the printer to shrink inward along its axial direction, thereby preventing the drive head 8 of the printer from colliding with the printer. The two protruding claws 313 on the end 312 interfere, and prevent the process box 1 from being blocked and interfered by some parts during the process of dropping off the machine, which may cause jamming.

After the process box 1 is completely placed inside the printer, the user releases the process box 1, and under the resilience of the first return elastic member 6 and the second return elastic member 7, the force-bearing part 51 of the pull rod 5 is far away from the handle part 21. The side wall 211 of the accommodation chamber moves, and the connecting part 52 drives the pushing part 53 to move along the axis direction perpendicular to the rod part 311, that is, the raised part 532 of the pushing part 53 moves away from the guide ring 33. At this time, the transmission head 8 of the printer moves along its Extending axially forces the push rod 35 to retract into the end portion 312 along the axial direction of the driving force receiving head 31 to move, and at the same time, the driving limit pin 32 drives the guide ring 33 to move away from the end portion 312 along the axial direction of the driving force receiving head 31 , so that the two protruding claws 313 of the end 312 are stably engaged with the transmission head 8 of the printer. At this time, the protruding claws 313 can achieve a stable rotation fit with the transmission head 8 of the printer.

After the toner in the process cartridge 1 is printed, the process cartridge 1 needs to be taken out from the printer, and the user holds the handle 21 of the process cartridge 1 to pull the process cartridge 1 outward. During the user's gripping process, the force-receiving part 51 of the pull rod 5 receives the gripping force and moves toward the side wall 211 of the accommodating cavity of the handle part 21, and the connecting part 52 drives the pushing part 53 to move along the axis direction perpendicular to the rod part 311. , that is, the protruding portion 532 of the pushing portion 53 moves toward the guide ring 33, so that the protruding portion 532 forces the guide ring 33 to move close to the end 312 of the driving force receiving head 31 along the axial direction of the driving force receiving head 31, and simultaneously drives the stopper The pin 32 drives the ejector rod 35 to move outside the protruding end 312 along the axial direction of the driving force receiving head 31 . At this time, the first return elastic member 6 and the second return elastic member 7 are both in a compressed state. In the process that the process box 1 is removed from the printer, the top of the protruding end 312 of the push rod 35 acts on the drive head 8 of the printer, forcing the drive head 8 of the printer to shrink inward along its axial direction, so as to realize the two ends of the end 312. The claw 313 is out of contact with the drive head 8 of the printer, and the process cartridge 1 can be taken out smoothly.

Use the pull rod 5 to control the guide ring 33 to move back and forth along the axis direction of the driving force receiving head 31, thereby driving the push rod 35 to move outside the protruding end 312 along the axis direction of the driving force receiving head 31 through the guide ring 33 and the limit pin 32, Or the retracted end portion 312 moves, so that the process box 1 can be smoothly dropped and removed from the main machine. Moreover, the process box 1 is lowered more smoothly, and the printing is more stable. The drive head 5 of the printer and the driving force receiving head 31 of the process box 1 can be correctly and fully engaged, which improves the compatibility of the process box 1 and is more cost-effective.

The above embodiments are only preferred examples of the present invention, and are not intended to limit the scope of the present invention, so all equivalent changes or modifications made according to the structure, features and principles of the patent scope of the present invention should be included in the patent of the present invention. within the scope of the application.

Claims (10)

1. handle box, including box body, photosensitive drums and driving force transfer unit, the photosensitive drums can rotatably be supported around rotation axis Between the end walls of the box body, the driving force transfer unit is connect with a shaft end of the photosensitive drums, and feature exists In:

The driving force transfer unit includes driving gear, driving force reception head, lead ring and mandril, the driving gear and institute The shaft end connection of photosensitive drums is stated, the driving force, which receives head, has bar portion and end, one end of the bar portion and the drive Moving gear connection, the end is located at the other end of the bar portion；

The mandril can reciprocatingly be inserted into the end and the bar portion along the axis direction that the driving force receives head In axis hole, the mandril is provided with spacer pin with extending radially through, and the bar portion offers limiting slot, the limit with extending radially through Position pin can be reciprocatingly inserted into the limiting slot along the axis direction that the driving force receives head, and the lead ring is covered described In bar portion and with the spacer pin abutting contact；

The handle box further includes pull rod, and the axis direction that the pull rod can control the lead ring to receive head along the driving force is past It is multiple mobile.

2. handle box according to claim 1, it is characterised in that:

The handle portion of the axis direction extension along the photosensitive drums is provided on the box body, the pull rod has forced section and pushes away Dynamic portion, in the accommodating chamber of the handle portion, the forced section can control the pushing part along perpendicular to institute for the force part The axis direction for stating bar portion is mobile, and the axis direction that the pushing part can control the lead ring to receive head along the driving force is reciprocal It is mobile.

3. handle box according to claim 2, it is characterised in that:

The first return springs are compressed between the forced section and the side wall of the accommodating chamber, first return springs are compeled Make the forced section far from the side wall of the accommodating chamber.

4. handle box according to claim 3, it is characterised in that:

The handle box further includes end cap, and the end cap is mounted on described with being located at same end face with the driving force transfer unit The side of box body, the end cap offer the guide groove extended along the axis direction perpendicular to the bar portion, the promotion position In in the guide groove.

5. handle box according to claim 4, it is characterised in that:

The second return springs are compressed between the pushing part and the end cap, the free end of the pushing part is provided with towards institute The lug boss of lead ring direction extension is stated, second return springs force the lug boss far from the lead ring.

6. handle box according to claim 5, it is characterised in that:

The free end of the pushing part offers through-hole in the position of the adjoining lug boss, and the through-hole is covered in the bar portion On.

7. according to the described in any item handle boxes of claim 2 to 6, it is characterised in that:

The forced section is located in the accommodating chamber with extending along the axis direction of the photosensitive drums.

8. handle box according to claim 7, it is characterised in that:

The forced section and the side wall of the accommodating chamber are set in parallel.

9. handle box according to claim 8, it is characterised in that:

The quantity of first return springs is two, and two first return springs are abreast located at the handle portion In the medium position of the axis direction of the photosensitive drums.

10. handle box according to claim 9, it is characterised in that:

The limiting slot is arranged in the axis direction that the driving force receives head adjacent to the end.