CN2615707Y

CN2615707Y - Laser printer processing box

Info

Publication number: CN2615707Y
Application number: CN 03224769
Authority: CN
Inventors: 李军
Original assignee: Print Rite Unicorn Image Products Co Ltd
Current assignee: Print Rite Unicorn Image Products Co Ltd
Priority date: 2003-03-31
Filing date: 2003-03-31
Publication date: 2004-05-12
Anticipated expiration: 2013-03-31

Abstract

Disclosed is a processing case detachable installed on the host machine of the electrograph imaging device, wherein, one end face of the photoactive drum in the processing case is provided with a telescopic driving force receiving part. The driving force receiving part comprises a base plate integrated with a photoactive drum frame in the drum barrel, and a chute is arranged at the two sides of the base plate, a gear wheel with the wheel axle fixed on the base plate, an anti-collision rod with one end in the chute and the other end co-operating with the center hole gap on the axial cord of the drum frame, and the middle part is provided with a rack bar co-operated with the gear wheel, a driving force receiving bar with three or more support bars co-operating with the corresponding hole gap on the end surface of the drum separately, a supporting part supporting the separate pole in the drum frame with one end in the chute and a rack bar co-operating with the gear wheel in the middle part. The driving force receiving part is able to provide anti-collision protection effectively.

Description

Laser printer processing box

Technical field

The utility model relates to a kind of handle box that is installed in the electrophotographic imaging forming apparatus.

Background technology

Low noise and print quality when as everyone knows, laser printer is with its work, fast advantage and popularize rapidly.As the integral type handle box of laser printer consumptive material, comprise electrophotography photosensitiving piece and can act on treating apparatus on the described electrofax sensitive piece, and this handle box is detachable the installation as a unit to the master unit of imaging device.Use handle box, need not to rely on the maintenance personal just can effectively keep in repair device, thereby be widely used in the electrophotographic imaging forming apparatus by the user.The electrophotographic imaging forming apparatus that adopts the electrophotographic image forming mode is work like this: by forming the light of image, the electrofax photosensory assembly of charger uniform charging is exposed selectively, form sub-image; This sub-image becomes the toner picture by developing apparatus with toner development; Formed toner picture is printed on the recording medium by the transfer printing device, is able to form on recording medium image.

Handle box generally includes a developing cell and a cleaning unit, and they are connected to each other by connecting pin.Developing cell comprises a developer container and a toner container, and developer container is supporting the developing parts resemble the developer roll.The cleaning unit comprises a photosensitive drums, charging roller, cleaning scraper, cleaning agent container.In addition, a pair of stage clip is set under compressive state between cleaning agent container and the developer container, and they keep photosensitive drums and developer roll to be pressed.The method that drives the electronics photosensitive drums has many kinds.Referring to Fig. 1, be provided with a driving force receiving portion at photosensitive drums 1 vertical end, this driving force receiving portion have polygon prismatic 2 (shown in example in, the polygon rib has the cross section of equilateral triangle basically), have transmission shaft part 3 and the gear parts 4 that is used for driving force is sent to the developer roll of handle box by the bearing portions supporting.When handle box is installed on the electrophotograph imaging device main body, the hole that electrophotograph imaging device main body upper section comprises a plurality of turnings be assemblied in wherein described protruding 2 when rotating, the rotating force in described hole 2 is sent to electric photosensitive drum 1 by projection, and by gear parts 4 driving force is sent to developer roll.

Though said method can be delivered to driving force on the photosensitive drums effectively, but the polygon prismatic of driving force receiving portion is easily damaged because of bump or friction in transportation, installation, unloading process, reduce the precision of driving force transmission, cause handle box not use when serious.

Summary of the invention

The utility model provides a kind of driving force receiving portion that makes can avoid the improved laser printer processing box that clashes into or rub.

For achieving the above object, the laser printer processing box that the utility model adopts comprises the developing cell and the cleaning unit that are hinged, photosensitive drums of cleaning unit upper support, and a vertical end of photosensitive drums is provided with in-line gears; Photosensitive drums one end is provided with telescopic driving force receiving portion, and described driving force receiving portion has, a substrate, and itself and photosensitive drum frame one and be positioned at drum barrel, the substrate both sides are provided with chute; One gear, its wheel shaft is fixed on the substrate; One anti-bumping rod, the one end is positioned at chute, the other end and the center pit clearance fit of rousing on the frame axis, there is the tooth bar with gear matched at the middle part; One has three or three driving forces with upper rack posts to accept bar,, the corresponding aperture clearance fit on each pole and the drum frame end face; One is positioned at the support section of bulging each pole of frame internal support, and the one end is positioned at chute, and there is the tooth bar with gear matched at the middle part.

At support section one projection is arranged, drum frame inwall also has a projection, in the anti-bumping rod outside, is equipped with spring between support section projection and the drum frame inwall projection.Each pole that driving force is accepted bar drum axle relatively has identical fixed angle, and the cross section in corresponding hole be an ellipse on the drum frame.

Adopt the laser printer processing box of technique scheme, in the time of on not being installed to printer, have only anti-bumping rod to stretch out, driving force is accepted bar and is in retracted mode, avoids driving force to accept bar and damages because of collision, friction in transportation and installation process or wear and tear.

Description of drawings

Fig. 1 is the side view of conventional process box;

Fig. 2 is the side view of the utility model handle box;

Fig. 3 is the stereographic map of reflection driving force receiving portion at the next line of vision of non-installment state;

Fig. 4 is the stereographic map of reflection driving force receiving portion another line of vision under non-installment state;

Fig. 5 reflects the stereographic map of driving force receiving portion at the next line of vision of installment state;

Fig. 6 is the stereographic map of reflection driving force receiving portion another line of vision under installment state;

Fig. 7 is the structural drawing of driving force receiving portion;

Fig. 8 is the structural drawing of anti-bumping rod;

Fig. 9 is the sectional view of driving force receiving portion.

Embodiment

For the sake of simplicity, structure and working mechanism with the identical laser printer processing box of prior art are repeated no more, only the utility model structure different with prior art given to describe in detail.

Referring to Fig. 2, be to adopt printer handle box of the present utility model.Handle box 5 comprises a developing cell 6 and a cleaning unit 7, and they are hinged each other.Developing cell 6 comprises a developer container 6a and a toner container 6b, and developer container 6a is supporting and resembling the such developing parts of developer roll (being to illustrate among the figure).Photosensitive drums 1 of cleaning unit bearing, an end of photosensitive drums 1 is provided with in-line gears 4, is used for when handle box 5 is packed the imaging device main frame into driving force being delivered to developer roll from the imaging device main frame; One end face of photosensitive drums 1 is provided with telescopic driving force receiving portion 8; One is substantially disposed in gear 4 centers, by the photosensitive drum frame 3 of bearing portions supporting; A pair of stage clip (among the figure for illustrating) is set under compressive state between cleaning agent container 7a and the developer container 6a, and their keep photosensitive drums and developer roll to be pressed.

Fig. 3, Fig. 4 are the stereographic maps of two the different lines of vision of driving force receiving portion 8 under non-installment state.Driving force receiving portion 8 inside have one to be positioned at drum barrel and substrates 9 photosensitive drum frame 3 one, and its both sides are provided with

chute

9a and 9b; Also have a gear 10, its

wheel shaft

10a, 10b are fixed on the substrate 9, and

wheel shaft

10a, 10b are by a block 10c separately.Stretch out the center pit 3d of one end of anti-bumping rod 11 from drum frame axis, the other end links to each other with tooth bar 13a by a baffle plate 12 (referring to Fig. 4), and the end of tooth bar 13a is positioned at chute 9a.Three

pole

14a, 14b, the 14c that driving force is accepted bar 14 is retracted in respectively in

corresponding aperture

3a, 3b on the bulging frame end face, the 3c.Be positioned at bulging frame, support drive power is accepted the support section 15 of bar, and the one end is positioned at chute 9b, and there is the tooth bar 13b that cooperates with gear 10 at the middle part.

Fig. 5, Fig. 6 are the stereographic maps of two the different lines of vision of driving force drive disk assembly 8 under installment state.When handle box is installed on the main frame, main frame projection promotes anti-bumping rod 11, forces anti-bumping rod 11 along the moving along arrow indication directions X among Fig. 5 of center pit 3d, rotates by tooth bar 13a driven gear 10 clockwise direction simultaneously, and cooperating by gear 10 and tooth bar 13b, make support section 15 promote driving force and accept

bar

14a, 14b, 14c along arrow indication Y direction among the figure, and make it respectively from

corresponding aperture

3a, 3b stretches out among the 3c, is meshed with the recess that twists on the main frame.Like this, when handle box is installed on the imaging device main body, the recess that twists on the imaging device main body is with being assemblied in wherein driving force when accepting bar and rotating, driving force is sent on the photosensitive drums of described handle box by photosensitive drum frame 3, and by developer roll gear 4, driving force is delivered to developer roll in the handle box.

As shown in Figure 7, the pole 14 that driving force is accepted bar is an one with support section 15 and tooth bar 13b, and support section 15 has a through hole at the axle center, and anti-bumping rod 11 passes from the central through hole of support section 15.Anti-bumping rod 11 links to each other with tooth bar 13a by baffle plate 12.Between the inwall of support section central through hole and anti-bumping rod outer wall, a spring 16 is arranged.The tooth bar 13a that driving force is accepted tooth bar 13b, gear 10 and the anti-bumping rod 11 of bar 14 forms a toothed-wheel gear.

As shown in Figure 8, anti-bumping rod 11 1 ends are right cylinders, and right cylinder is with a spring 16 outward.Right cylinder links to each other with tooth bar 13a by a baffle plate 12.

Describe the course of work that driving force is accepted part 8 in detail below with reference to Fig. 9.As shown in Figure 9, on the support section 15 central through hole inwalls projection 15a is arranged, in the drum axle another projection 17 is arranged, an end of spring 16 is resisted against on the projection 15a, and the other end is resisted against on the interior projection 17 of drum axle.When handle box was in not installment state, the spring assembly 16 that places the anti-bumping rod outside in the raw.When handle box is installed on the imaging device, the main frame projection promotes anti-bumping rod 11, force anti-bumping rod 11 to be regained, support section 15 is moved and pressuring spring 16 along the direction opposite with anti-bumping rod 11, make driving force accept bar 14 simultaneously and stretch out by gear 10 along arrow indication z direction.When handle box when imaging device unloads, the main frame projection disappears to the expulsive force of anti-bumping rod 11, spring 16 makes support section 15 along arrow indication z direction by elasticity own, making driving force accept bar regains, by the interlock of gear 10 and tooth bar, make anti-bumping rod 11 return to the position of from transmission shaft 3, stretching out simultaneously.

Certainly, the utility model is not limited to these cited details.The application attempts to comprise as being improved purpose or correction in the claim scope and variation.

Claims

1, laser printer processing box comprises the developing cell and the cleaning unit that are hinged, photosensitive drums of cleaning unit upper support, and an end of photosensitive drums is provided with in-line gears; It is characterized in that: photosensitive drums one end is provided with telescopic driving force receiving portion.

2, laser printer processing box according to claim 1 is characterized in that: described driving force receiving portion has, a substrate, and itself and photosensitive drum frame one and be positioned at drum barrel, the substrate both sides are provided with chute; One gear, its wheel shaft is fixed on the substrate; One anti-bumping rod, the one end is positioned at chute, the other end and the center pit clearance fit of rousing on the frame axis, there is the tooth bar with gear matched at the middle part; One driving force is accepted bar, comprises the pole more than three or three, each pole and the corresponding aperture clearance fit of rousing on the frame end face, and one is positioned at the support section of bulging each pole of frame internal support, and the one end is positioned at chute, and there is the tooth bar with gear matched at the middle part.

3, laser printer processing box according to claim 2 is characterized in that: described support section has a projection, and drum frame inwall also has a projection, in the anti-bumping rod outside, is equipped with spring between support section projection and the drum frame inwall projection.

4, according to claim 2 or 3 described laser printer processing boxes, it is characterized in that: each pole drum axle relatively has identical fixed angle.