A kind of handle box
Technical field
The utility model relates to image processing system, relates in particular to a kind of handle box.
Background technology
The image processing system of electro photography such as laser printer are a kind of electrofax principles of utilizing, and through overcharging, exposure is developed at least, transfer printing, and fixing forms the device that forms image on medium such as the paper at image.
In charging process,, utilize like the corona discharge mode evenly predetermined electric charge is filled with in the surface of photo-sensitive cell such as photosensitive drums through charging device; At exposure process; Photosensitive member surface to filling even predetermined charge with optionally makes public, and the place of being made public is because the sensitometric characteristic of photo-sensitive cell; Resistance descends; So the electric charge ground connection cancellation in the localities that is made public, promptly after the exposure, photosensitive member surface forms an electrostatic latent image that distribution characterized by electric charge corresponding to institute's desire formation image; At developing process, through developing parts, developer that is used to form visual image such as carbon dust, the effect of mating reaction power such as electric field force is delivered on the electrostatic latent image of photosensitive member surface, and it is visual to make that above-mentioned electrostatic latent image obtains; In transfer process,, transfer to image to the developer on the photosensitive member surface electrostatic latent image and form on medium such as the paper through transfer device such as transfer roll; At fixing, be secured in the developer of transferring on the image formation medium on the image formation medium through fixing device.
Handle box is removably mounted in the image processing system; Handle box comprises photo-sensitive cell at least, accept from the photo-sensitive cell driven unit of image processing system driving force and be used to support the main body of photo-sensitive cell; In the image processing system course of work, the image processing system driving head is given handle box through the photo-sensitive cell driven unit with transmission of power, makes the photo-sensitive cell rotation on the handle box; And driving force passed to the miscellaneous part on the handle box, like developing parts etc.
As shown in Figure 1; The photo-sensitive cell driven unit 10 that prior art adopts comprises: be arranged on the bulging flange 2 that photo-sensitive cell 1 end is connected with photo-sensitive cell 1; Drum flange 2 is used for the driving force that receives is passed to photo-sensitive cell 1; To the drum axle 3 that stretches out, drum axle 3 is used for rotatably supporting photo-sensitive cell 1 in the handle box course of work from drum flange 2 end axis; Stretch out from drum axle 3 end face axial; Be used for receiving from image processing system driving head 20 convexity 4 of driving force, protruding 4 sidewall 4b is provided with the first double wedge 4a that radially extends along protruding 4, and wherein the first double wedge 4a is arranged on the protruding sidewall 4b obliquely; And the convexity 4 in the above-mentioned photo-sensitive cell driven unit; The first double wedge 4a, coupling shaft 3 and drum flange 2 are the moulding of same material integral production, protruding 4 axle center also is provided with pilot hole 4c.The image processing system driving head 20 of transmission of matching with photo-sensitive cell driven unit 10 comprises: the groove 12 that xsect is an equilateral triangle, and groove 12 is provided with three corner 12a, and the bottom surface 12b of groove 12 is provided with positioning convex 12c.After handle box is packed image processing system into; Protruding 4 just can insert in the groove 12; The first double wedge 4a that is arranged on protruding 4 can mesh transmission of drive force with any rotation angle 12a in the groove 12; Positioning convex 12c is inserted among the pilot hole 4c, realizes the radial location of photo-sensitive cell driven unit 10, thereby guarantees in the center coincident pair of driving force transmittance process protrusions 4 with groove 12; Protruding 4 end face 4d contacts with the bottom surface 12b of groove 12, realizes the axial location of photo-sensitive cell driven unit 10.Like this; When image processing system driving head 20 rotates; First double wedge 4a on the convexity 4 and any rotation angle 12a in the driving head groove 11 mesh, and rotate thereby drive protruding 4, just can realize the synchronous rotation of convexity 4 and image processing system driving head 20; Last protruding 4 pass to photo-sensitive cell 1 from the driving force that image processing system driving head 20 receives through drum axle 3 and the drum flange 2 that is attached thereto with institute, thus the rotation of drive photo-sensitive cell 1.
The shortcoming that prior art exists:
Has only a turning engagement transferring power in the groove in single double wedge and the image processing system driving head in the handle box; The wall thickness of corner is wanted Bao Deduo with respect to other position of groove; Image processing system is in the process of running up; Stressed turning is easy to take place spalling, causes the image processing system driving head to damage, and driving force can not be delivered on the handle box.
When image processing system driving head and photo-sensitive cell driven unit engagement transferring power; There is swing in the image processing system driving head; Can cause image processing system driving head axis and photo-sensitive cell driven unit axis to have angle; The axial location of photo-sensitive cell driven unit is that the end face through convexity contacts with the bottom surface of groove and realizes, and radial location is that cooperation through positioning convex and pilot hole realizes that not only location area is little and quality of fit requires height for such locator meams; The unstable transmission that can influence driving force in location on the one hand, the quality of fit requirement is high on the other hand can cause the difficulty of production technology and the increase of production cost.
The utility model content
The utility model provides a kind of handle box, causes the image processing system driving head to damage easily when solving power acceptance division in the existing handle box photo-sensitive cell driven unit with the engagement of image processing system driving head and locatees the demanding technical matters of quality of fit.
In order to solve above technical matters, the technical scheme that the utility model is taked is:
A kind of handle box; Comprise handle box main body, support member and photo-sensitive cell driven unit; Said support member is fixedly connected on the said handle box main body; Said photo-sensitive cell driven unit comprises: be fixed on the bulging flange of photo-sensitive cell end, be connected to be used to receive the power acceptance division from the image processing system driving force to the drum axle that stretches out with the image processing system driving head from said bulging flanged shaft, said photo-sensitive cell driven unit rotatably is supported on the said support member through said drum axle; Said image processing system driving head comprises: an xsect is leg-of-mutton groove; Said groove is provided with three corners, and said power acceptance division and said corner engagement transferring power is characterized in that; Also comprise an outsourcing portion that makes the photo-sensitive cell radial location of extending along drum axle axial direction, the internal diameter of said outsourcing portion and the external diameter of said image processing system driving head are complementary to wrap said image processing system driving head.
Said power acceptance division is arranged on the axle center of said bulging axial end.
Said outsourcing portion is arranged on the said bulging axial end.
Said outsourcing portion is arranged on the said support member.
Said power acceptance division comprises protruding and is arranged at the double wedge on the said projection, said double wedge and the engagement of said corner
Transferring power.
The end face of said outsourcing portion is rounded.
The end face of said outsourcing portion is the multi-section circular arc shape on same circle.
Also be provided with in the said outsourcing portion and be convenient to the image processing system driving head and be inserted into the chamfering in the outsourcing portion.
Said outsourcing portion and said drum axle are one-body molded.
Said power acceptance division has three; Said three power acceptance divisions and said three corners transferring power that is complementary; The madial wall upper edge drum axle of said drum axle radially extend three identical axial location portions at grade; Angle between the corner of the angle between said location division and image processing system driving head is identical; The length of the radial direction of said axial location portion is slightly larger than the distance of corner to image processing system driving head outside surface, and the internal diameter of said drum axle is slightly larger than the external diameter of said image processing system driving head.
After having adopted technique scheme; Owing to increased an outsourcing portion that makes the photo-sensitive cell radial location of extending along drum axle axial direction, the internal diameter of said outsourcing portion and the external diameter of said image processing system driving head are complementary to wrap said image processing system driving head.When power acceptance division in the handle box photo-sensitive cell driven unit and the engagement of image processing system driving head; Outsourcing portion coats protection and location to the image processing system driving head simultaneously; The image processing system driving head is not damaged; Make simultaneously both location be more prone to accurately, cause the image processing system driving head to damage, locate quality of fit easily when having solved power acceptance division in the existing handle box photo-sensitive cell driven unit and require height and axis to have the technical matters of angle with the engagement of image processing system driving head.
Description of drawings
The structural representation of the photo-sensitive cell driven unit that adopts in Fig. 1 prior art handle box;
The part-structure synoptic diagram of the handle box that Fig. 2 is adopted for embodiment one;
The schematic perspective view of the photo-sensitive cell driven unit that Fig. 3 a is adopted for embodiment one;
The vertical view of the photo-sensitive cell driven unit that Fig. 3 b is adopted for embodiment one;
The vertical view of the image processing system driving head that Fig. 4 is adopted for embodiment one;
The photo-sensitive cell driven unit that Fig. 5 is adopted for embodiment one and the assembling schematic perspective view of image processing system driving head;
The photo-sensitive cell driven unit that Fig. 6 is adopted for embodiment one and the assembling section of image processing system driving head;
Handle box that Fig. 7 is adopted for embodiment two and image processing system driving head assembling synoptic diagram;
Fig. 8 is the part sectioned view of Fig. 7 along the A-A direction;
The schematic perspective view of the photo-sensitive cell driven unit that Fig. 9 is adopted for embodiment three;
The vertical view of the photo-sensitive cell driven unit that Figure 10 is adopted for embodiment three.
Embodiment
Embodiment one
Fig. 2 is the part-structure synoptic diagram of the handle box that present embodiment adopted, and knows that by figure handle box comprises handle box main body 30, support member 40 and photo-sensitive cell driven unit 10; Support member 40 is fixedly connected on the handle box main body 30, and shown in Fig. 3-5, Fig. 3 a is the schematic perspective view of the photo-sensitive cell driven unit that present embodiment adopted; Fig. 3 b is the vertical view of the photo-sensitive cell driven unit that present embodiment adopted; Fig. 4 is the vertical view of image processing system driving head, and Fig. 5 is the assembling schematic perspective view of photo-sensitive cell driven unit and image processing system driving head, is known by figure; Photo-sensitive cell driven unit 10 comprises: the bulging flange 2 that is fixed on photo-sensitive cell 1 end; From the drum axle 3 that drum flange 2 axially stretches out, be arranged on the convexity 4 at the axle center of rousing axle 3 end face 3a and the outsourcing portion 5 of extending, making photo-sensitive cell 1 radial location and have circular end surface from drum axle 3 end face 3a axial directions, convexity 4 is as the power acceptance division that receives image processing system driving head power; The image processing system driving head adopts the image processing system driving head of mentioning in the prior art; Photo-sensitive cell driven unit 10 rotatably is supported on the support member 40 through outsourcing portion 5, and protruding 4 are in the outsourcing portion 5, and the inside diameter D 1 of outsourcing portion 5 is slightly larger than the D outer diameter 2 of image processing system driving head 20; The D outer diameter 3 of outsourcing portion is greater than the D outer diameter 4 of drum axle 3, and is as shown in Figure 6; Also be provided with chamfering 5b in the outsourcing portion 5, be convenient to image processing system driving head 20 through the setting of chamfering 5b and be inserted in the outsourcing portion 5; Can also be provided with the gear 2a that is used for driving force is delivered to handle box miscellaneous part (for example developing parts etc.) on the side circumference of drum flange 2; Protruding 4 sidewall 4b is provided with along protruding 4 and radially extends the first double wedge 4a; Wherein the first double wedge 4a tilts or vertically is arranged on the protruding sidewall 4b; The first double wedge 4a arrives the wall thickness H 1 of the distance H 2 of outsourcing portion 5 greater than the corner 12a of image processing system driving head 20 in outermost end in the radial direction; Like Fig. 3 b and shown in Figure 4; Protruding 4 structure is not limited to present embodiment, can be any structure that can cooperate with image processing system driving head 20 upper grooves 12, can also be provided with on protruding 4 and two double wedges of any two corners coupling engagement of image processing system driving head or three double wedges meshing with the method for three turning angles coupling of image processing system driving head.
The photo-sensitive cell driven unit that present embodiment adopted can be integrated injection molding; Also can have buffer structure; Consider from the intensity and the performance of material, preferably POM (polyformaldehyde resin), PC (polycarbonate), ABS high-intensity resin materials such as (acrylonitrile-styrene-butadiene copolymers).
The difference of D1 and D2 is between 0.5mm-0.3mm; Guarantee to have between image processing system driving head and photo-sensitive cell driving head enough shifting amount to form the angle between device driving head axis and photo-sensitive cell driven unit axis, more preferably select the numerical value between the 0.1mm-0.2mm with removal of images; Outsourcing portion 5 between 1mm-7mm, makes the axial location between image processing system driving head and photo-sensitive cell driven unit more stable from the axially extended length L of end face 3a, more preferably selects the numerical value between the 2mm-4mm.
Protruding 4 only accept the part of the force of the driving force of image processing system driving head 20 as photo-sensitive cell driven unit 10; Outsourcing portion 5 is as the localization part of photo-sensitive cell driven unit 10; Realize stressed with the location separate, can reduce requirement to the element manufacturing accuracy.
Fig. 6 is the assembling section of photo-sensitive cell driven unit 10 and image processing system driving head 20;, handle box gets into duty in packing image processing system into; Image processing system driving head 20 is inserted in the outsourcing portion 5; The outside surface 20a of image processing system driving head 20 contacts with the inside surface 5a of outsourcing portion 5, and outsourcing portion 5 encases image processing system driving head 20; Protruding 4 are inserted in the groove 12, any rotation angle 12a engagement transmission of drive force of the first double wedge 4a and groove 12; End face 4d through protruding 4 contacts or rouses the end face 3a of axle 3 with the bottom surface 12b of groove 12 and the end face 20b of image processing system driving head 20 contacts the axial location that realizes the photo-sensitive cell driven unit, thereby realizes that through the outer packet mode of outsourcing portion 5 and image processing system driving head 20 radial location of photo-sensitive cell driven unit 10 guarantees the center coincident pair at driving force transmittance process protrusions 4 and groove 12.
Certainly, above-mentioned outsourcing portion is an annulus, also can be the arc plate of segmentation, like two sections arc plates, three sections arc plates or four arcs sheet etc.
In the present embodiment, those of ordinary skill is appreciated that all drum axle 3 can be same parts with outsourcing portion 5, specifically sees embodiment three.
Embodiment two
Fig. 7 is handle box and image processing system driving head assembling synoptic diagram that present embodiment adopted, and in the present embodiment, photo-sensitive cell driven unit 10 rotatably is supported on the support member 40 through drum axle 3.The structure of the photo-sensitive cell driven unit that present embodiment adopted is basic identical with embodiment one with principle of work; Different with embodiment one is that outsourcing portion is not arranged on the photo-sensitive cell driven unit 10; And be arranged on the end face on the support member 40; Outsourcing portion 50 and support member 40 integrated injection moldings, the axis of outsourcing portion 50 is identical with the axis of photo-sensitive cell driven unit 10, and the internal diameter of outsourcing portion 50 omits the D outer diameter 2 of D5 greater than image processing system driving head 20; Also be provided with chamfering 50b in the outsourcing portion 50, be convenient to image processing system driving head 20 through the setting of chamfering 50b and be inserted in the outsourcing portion 50.Fig. 8 is the part sectioned view of Fig. 7 along the A-A direction, and the inside surface 50a of outsourcing portion 50 contacts with the outside surface 20a of image processing system driving head 20 and forms outsourcing, and principle of work is identical with embodiment one, and those of ordinary skill can be understood, and repeats no more.
Certainly, above-mentioned outsourcing end surface can be circle, also can be the multi-section circular arc that is distributed on the same circumference, like two sections circular arcs, three sections circular arcs or four arcs etc.
Embodiment three
Shown in Fig. 9-10; Fig. 9 is the schematic perspective view of the photo-sensitive cell driven unit that present embodiment adopted; Figure 10 is the vertical view of the photo-sensitive cell driven unit that present embodiment adopted; Know by figure; The photo-sensitive cell driven unit 11 that is fixedly connected on photo-sensitive cell 1 end comprises: drum flange 22, axially stretch out and have 33 and three power acceptance divisions 44 of drum axle of annular cross section from drum flange 22, photo-sensitive cell 1, drum flange 22 and drum axle 33 have identical axis, and drum axle 33 is supported on the support member 40 rotatably.Image processing system driving head described in the present embodiment is identical with embodiment one, two, promptly adopts the image processing system driving head of mentioning in the prior art, no longer is repeated in this description.The madial wall 33a of drum axle 33 goes up, radially and at grade extend three identical axial location portions 55 along the drum axle; Angle between the corner 12a of the angle that the location division is 55 and image processing system driving head 20 is identical; The length H3 of the radial direction of axial location portion 55 is slightly larger than the wall thickness H 1 of corner 12a, and the inside diameter D 6 of drum axle 33 is slightly larger than the D outer diameter 2 of image processing system driving head; Power acceptance division 44 is arranged on axial location portion 55 and points on the end face of axis; End face 55a is identical with the axial depth of the groove 12 of image processing system driving head 20 to the upwardly extending distance in side of the end face 33a of drum axle 33 in the location for power acceptance division 44; The line that the power acceptance division is 44 is triangularity roughly, and power acceptance division 44 meshes transferring power with the corner 12a of image processing system driving head 20.In image processing system driving head 20 and the photo-sensitive cell driven unit 11 transferring power processes; Image processing system driving head 20 is inserted in the space that forms between drum axle 33 and the power acceptance division 44; The madial wall 33a of drum axle 33 contacts with the outside surface 20a of image processing system driving head 20 and forms outsourcing, realizes the radial location of photo-sensitive cell driven unit 11; The location end face 55a of axial location portion 55 contacts the axial location that realizes photo-sensitive cell driven unit 11 with the end face 20b of image processing system driving head 20.
Through in that be provided with on the photo-sensitive cell driven unit or on the locating device can be with the outsourcing portion of image processing system driving head outsourcing, can avoid on the one hand because the phenomenon of the spalling that image processing system driving head groove produces in the driving force transmittance process as the wall thickness relative thin of the corner of driving force transfer part takes place; Can solve on the other hand in the driving force transmittance process and cause that by the swing of image processing system driving head there are the problem of angle in photo-sensitive cell assembly axis and image processing system driving head axis; Can also increase the friction force between image processing system driving head and photo-sensitive cell driven unit; Make the tightr of photo-sensitive cell driven unit and image processing system driving head engagement; Also can be used as simultaneously photo-sensitive cell driven unit radial location device; The radial location better effects if of photo-sensitive cell driven unit makes the driving force transmission between image processing system and photo-sensitive cell more steady.