CN201177731Y - Driving force transmission member and processing box - Google Patents
Driving force transmission member and processing box Download PDFInfo
- Publication number
- CN201177731Y CN201177731Y CNU2008200454945U CN200820045494U CN201177731Y CN 201177731 Y CN201177731 Y CN 201177731Y CN U2008200454945 U CNU2008200454945 U CN U2008200454945U CN 200820045494 U CN200820045494 U CN 200820045494U CN 201177731 Y CN201177731 Y CN 201177731Y
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- driving force
- power transmission
- transmission part
- projection
- right cylinder
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Abstract
The utility model discloses a driving force transmission component applied to a processing box, which comprises a main body with a driving force transmission gear, protuberances which can bear the driving force through being matched with concave holes of a driving force output head are arranged on the main body, and the protuberances adopt a plurality of upright columns axially protruded along the main body. When the protuberances of the upright columns are matched with the concave holes of the driving force output head of an device formed by images, and all the protuberances are respectively stuck with the edge parts on the sides of the orifices of the concave holes through the lateral surface for transmission realization. A point contact is approximately formed when the protuberances are fitted with the edge parts on the side of the orifices, so that the stress is more concentrated and the transmission is more reliable. If an anti-falling groove is arranged on the lateral surface of each upright column, the driving force transmission component can be prevented from falling off during the transmission process unexpectedly, so that the reliability, the stability and the printing quality of transmission can be further guaranteed. In addition, the utility model also provides a processing box which adopts the driving force transmission component.
Description
Technical field
The utility model relates to a kind of driving power transmission part that is used on the handle box, and the handle box with this driving power transmission part.
Background technology
Such as image forming apparatus such as laser printer, duplicating machine, facsimile recorder usually use dismountable handle box as a supplement carbon dust container and be engaged in it and form image on the medium.The required driving force of handle box moving component is provided by the motor in the image forming apparatus.The driving force kind of drive between the driving force acceptance division of handle box and the driving force output mechanism of motor mainly contains two kinds: a kind of is as U.S. Pat 4,829,335 handle boxes that disclose, the driving power transmission part of this handle box comprises the cross helical gear that is located at photosensitive drums one end, the cross helical gear of photosensitive drums is meshed on cross helical gear by driver part on the image forming apparatus and the handle box, to drive the photosensitive drums rotation.Another kind is the handle box that discloses as Chinese patent CN1217241C, the driving power transmission part of this handle box comprises the on-circular cross-section projection of stretching out from photosensitive drums one end, and the on-circular cross-section engaging hole of driving force delivery matches to accept and transmission of drive force makes the photosensitive drums rotation on this on-circular cross-section projection and the image forming apparatus.
A kind of handle box that adopts above-mentioned second kind of power transmission mode as shown in Figure 1, it mainly is made of the powder storehouse 1 that holds carbon dust and a waste powder hopper 2 of accommodating useless powder, moving components such as puddle support, powder feeding roller, developer roll are arranged in the powder storehouse 1, moving component in the waste powder hopper 2 is a photosensitive drums, in addition, also have charging roller and cleaning doctor etc.Photosensitive drums is as a vitals of handle box, comprises the drum type cylindrical shell of being made by conductive materials and has a pair of bulging flange of axial region, and the drum flange is provided with gear, in order to other moving component transmission of drive force in handle box.Photosensitive drums rotatably is supported between two sidewalls 4 of waste powder hopper 2 by above-mentioned two bulging flanges.One of them drum flange stretches out from the circular hole of a sidewall 4 as driving power transmission part, and this circular forms a circular hole flange 41.Being provided with a cross section on the axial region front end face that drives power transmission part is leg-of-mutton distortion columnar projections 3.In addition, the on-circular cross-section projection of power transmission member also can adopt non-distortion columnar projections 9 forms shown in Figure 2.In Fig. 2, motor 5, gear 6, gear 7 and the 8 usefulness double dot dash lines of driving force delivery in the image forming apparatus are represented.In the time of in photosensitive drums (handle box) is packed image forming apparatus into, driving force delivery 8 will axially moving to left along gear 7, shrinkage pool identical with protruding 9 xsects entangles projection 9 on it, and contact, thereby finish the moment of torsion transmission of motor 5 to photosensitive drums (handle box) with a side 92 of projection 9 corner part 91.
Figure 1 shows that the distortion hole that can cooperatively interact matches with the distortion projection.Figure 2 shows that the interengageable shrinkage pool of facing directly matches with upright projection.In the kind of drive shown in Figure 2,, may make to drive the power transmission part disengagement, and then make the transmission of moment of torsion become unreliable because image processing system and handle box internal environment have labile factor existence such as vibration.Though the kind of drive shown in Figure 1 has overcome above-mentioned defective, in the torque transfer process, can produce one along the axial force that axially projection is pulled to shrinkage pool, thereby can prevent that shrinkage pool and projection are separated, but because the existence of distortion, when being matched, shrinkage pool and projection have the phenomenon that embeds engagement between the two, and when being separated, must overcome this to embed engagement, thereby strengthened the resistance that the driving force delivery withdraws from.After carrying out the separating for several times operation, may make driving force delivery and backing mechanism thereof impaired, reduce the reliability of its action.
Summary of the invention
First purpose of the present utility model provides a kind of driving power transmission part that is used on the handle box, when it cooperates with the driving force delivery stressed more concentrated, transmission is more reliable.
Second purpose of the present utility model provides a kind of handle box that adopts above-mentioned driving power transmission part.
For realizing above-mentioned first purpose, the utility model provides a kind of driving power transmission part, comprises having the body that driving force is transmitted gear, and this body is provided with by the shrinkage pool with the driving force delivery and cooperates the projection of accepting driving force; Wherein, described projection be many along described body shaft to the right cylinder that protrudes.
When described right cylinder projection cooperated with the shrinkage pool of image forming apparatus driving force delivery, each projection realized transmission by the orifice edge rib portion applying of side and shrinkage pool respectively.Projection is similar to when fitting with orifice edge rib portion and contacts, make stressed more concentrated, transmission is more reliable.
Further, every right cylinder is provided with the anticreep groove that is basically perpendicular to described body axis when accepting driving force and on the side of described shrinkage pool orifice edge applying.Transmit in the process of moment of torsion in rotation, the orifice edge rib portion of shrinkage pool is engaged in the anticreep groove of projection, make that driving power transmission part is difficult for being separated from the driving force delivery, prevent to drive power transmission part unexpected disengaging in transmission process, reliability, stability and the print quality of transmission are further guaranteed.
Further, the front end of described right cylinder is formed with spigot surface, so that more successfully fall in the shrinkage pool of driving force delivery.At the driving force delivery in the process that projection moves, as long as the orifice edge of its shrinkage pool or the spigot surface that internal face touches the right cylinder front end, can slip into along this spigot surface, right cylinder is successfully fallen into by leading certainly also form stable cooperation in the shrinkage pool with it, thereby saved pre-determined bit structure complicated on the handle box framework, reduced the die sinking difficulty and the material cost of handle box framework, simplified the structure.
Again further, described right cylinder is plane or cambered surface in the side of the described body axis of distance farthest.
Preferably, described right cylinder has three, and the line between them is a triangle.
Concrete preferably scheme is, described body also has along described driving force and transmits gear shaft to the axial region that stretches out, and described three right cylinders are evenly distributed on the circumference of described axial region front end face, and the center of circle of this circle is positioned on the axis of described axial region.
Another kind of concrete scheme is that described three right cylinders are evenly distributed on described driving force and transmit on the circumference of gear front end face, and the center of circle of this circle is positioned on the axis of described driving force transmission gear.
For realizing above-mentioned second purpose, the handle box that the utility model provides comprises handle box framework and the photosensitive drums that is supported in this handle box framework rotationally, and one of this photosensitive drums is vertically held and is provided with a driving power transmission part; Described driving power transmission part comprises having the body that driving force is transmitted gear, and this body is provided with by the shrinkage pool with the driving force delivery and cooperates the projection of accepting driving force; Wherein, described projection be many along described body shaft to the right cylinder that protrudes.The advantage of this handle box is: when described right cylinder projection cooperated with the shrinkage pool of image forming apparatus driving force delivery, each projection realized transmission by the orifice edge rib portion applying of side and shrinkage pool respectively.Projection is similar to when fitting with orifice edge rib portion and contacts, make stressed more concentrated, transmission is more reliable.
Description of drawings
Below in conjunction with accompanying drawing and preferred implementation the utility model is described in further detail.
Fig. 1 is a kind of stereographic map of existing handle box;
Fig. 2 is the structural representation that a kind of existing photosensitive drums cooperates with image forming apparatus driving force output mechanism;
Fig. 3 is the waste powder hopper structural representation of the utility model handle box;
Fig. 4 is a kind of better embodiment stereographic map that the utility model drives power transmission part;
Fig. 5 is the front elevation of driving power transmission part shown in Figure 4;
Fig. 6 is the matching relationship synoptic diagram of driving power transmission part shown in Figure 4 and driving force delivery;
Longitudinal sectional view when Fig. 7 is driving power transmission part shown in Figure 4 and driving force delivery engaged transmission;
Fig. 8 is the A-A cut-open view of Fig. 7;
Fig. 9 is second kind of embodiment stereographic map of the utility model driving force transferring elements;
Figure 10 is the third embodiment stereographic map of the utility model driving force transferring elements.
Embodiment
Referring to Fig. 1, the composition of the utility model handle box and structure and conventional process box are roughly the same, mainly comprise powder storehouse 1 that holds carbon dust and the waste powder hopper 2 of collecting useless powder, are provided with assemblies such as puddle support, powder feeding roller, developer roll in powder storehouse 1; Be provided with assemblies such as photosensitive drums, charging roller, cleaning doctor in the waste powder hopper 2.Link together by pin or other modes between powder storehouse 1 and the waste powder hopper 2.For say something clear for the purpose of, among each figure of following embodiment, do not belong to image forming apparatus driving force output mechanism of the present utility model and represent that with double dot dash line identical label is represented identical structure among each figure.
Referring to Fig. 3, the photosensitive drums of present embodiment has the drum type cylindrical shell 10 of conductive materials by a surface and is fixed on the bulging flange 11 of cylindrical shell 10 left ends and the driving power transmission part 12 of right-hand member combines.Photosensitive drums rotatably is supported between two sidewalls 4 of waste powder hopper 2 by above-mentioned bulging flange 11 and driving power transmission part 12, and power transmission member 12 stretches out from the circular hole of a sidewall 4, and this circular forms a circular hole flange 42.Also be provided with gear on power transmission member 12 and the drum flange 11, the driving force that is used for receiving passes to other movement parts of handle box.
Below in conjunction with Fig. 4 and Fig. 5 the driving power transmission part of first kind of embodiment is further described.The body that drives power transmission part 12 comprises integrated installation portion 121, is used for the gear 123 and the axial region 122 of transmission of drive force.Installation portion 121 is roughly cylindrical tubular, will drive power transmission part 12 is installed on drum type cylindrical shell 10 in the mode of interference fit end by this installation portion 121.Axial region 122 axially stretches out along gear 123, stretch out three vertical cyclindrical shape projectioies 13 that are used to accept driving force on its front end face 124 vertically, three projectioies 13 are evenly distributed on the circumference of axial region 122 front end faces, and the center of circle of this circle is positioned on the axis of axial region 122.
Referring to Fig. 6 to Fig. 8, when being installed to handle box on the image forming apparatus, the driving force delivery 8 of image forming apparatus can match with the driving power transmission part 12 of handle box.Driving force delivery 8 is provided with a shrinkage pool 81, and the shape of cross section of shrinkage pool 81 is roughly equilateral triangle, and the internal face of this shrinkage pool 81 is the warp surface around axis distortion, and direction of twist is the counter clockwise direction during towards shrinkage pool 81 apertures.When driving force delivery 8 cooperated with driving power transmission part 12, three projectioies 13 that drive power transmission part 12 fell into shrinkage pool 81 from three bights in aperture respectively.When receiving instruction, the driving force delivery 8 of image forming apparatus begins rotation, each projection 13 is fitted by the orifice edge rib portion 82 of its side and shrinkage pool 81 respectively, accept the driving force of driving force delivery 8, make to drive power transmission part 12 and and then rotate and then photosensitive drums is also rotated simultaneously.Projection 13 side and orifice edge rib portion 82 basically form and contact, and stressed so more concentrated, transmission is more reliable.
For the projection 13 that drives on the power transmission part 12 can successfully be fallen in the shrinkage pool 81 of driving force delivery 8, the front end of each projection 13 all is formed with the guide surface 15 with respect to the axis tilt of axial region 122, the front end of projection 13 is attenuated, thereby can fall into easilier in the shrinkage pool 81 of driving force delivery 8.As another kind of embodiment, the spigot surface of protruding 13 front ends also can be designed to the cambered surface of evagination.Like this, driving force delivery 8 towards the projection 13 processes that move in, as long as the orifice edge of its shrinkage pool 81 or guide surface 15 or the curved guiding surface that internal face touches protruding 13 front ends, can slip into along this guide surface 15 or curved guiding surface, projection 13 is successfully fallen into by leading certainly also form stable cooperation in the shrinkage pool 81 with it, thereby saved pre-determined bit structure complicated on the circular hole flange 42, reduced the die sinking difficulty and the material cost of handle box framework, simplified the structure.
Referring to Fig. 9, the second kind of embodiment of driving force transferring elements 12 and the difference of first kind of embodiment mainly are, also be provided with an anticreep groove 14 that is basically perpendicular to axial region 122 axis on the side of each projection 13, transmit in the process of moment of torsion in rotation like this, the orifice edge rib portion 82 of shrinkage pool 81 is engaged in the anticreep groove 14 of projection 13, make and drive the driving force delivery 8 that power transmission part 12 is difficult for being separated from image forming apparatus, prevent to drive power transmission part 12 accident in transmission process and withdraw from, make the reliability of transmission, stability and print quality are further guaranteed.
Referring to Figure 10, in the middle of the third embodiment of driving force transferring elements 12 axial region that axially stretches out along gear 123 is not set, three vertical cyclindrical shape projectioies 13 are directly stretched out from the front end face 125 of gear 123 vertically.Three projectioies 13 are evenly distributed on the circumference of this front end face 125, and the center of circle of this circle is positioned on the axis of gear 123, and the side of each projection 13 is provided with an anticreep groove 14, and its effect is the same with anticreep groove in above-mentioned second kind of embodiment.The working method of this driving force transferring elements 12 and second kind of embodiment are basic identical, no longer are repeated in this description herein.
Above-described only is preferred implementation of the present utility model; under the prerequisite that does not break away from the present utility model design; part-structure to handle box improves or replaces; perhaps the shape that drives the projection on the power transmission part, position, quantity etc. are done simple modifications or replacement; do simple modifications or replacement again or to the shape of the anticreep groove on the projection, position, quantity etc., of this sort embodiment all belongs to protection domain of the present utility model.
Claims (10)
1, drive power transmission part, comprising:
Have driving force and transmit the body of gear (123), this body is provided with by cooperating the projection (13) of accepting driving force with the shrinkage pool (81) of driving force delivery;
It is characterized in that:
Described projection (13) be many along described body shaft to the right cylinder that protrudes.
2, driving power transmission part according to claim 1 is characterized in that:
Every right cylinder is provided with the anticreep groove (14) that is basically perpendicular to described body axis when accepting driving force and on the side of described shrinkage pool (81) orifice edge (82) applying.
3, driving power transmission part according to claim 2 is characterized in that:
The front end of described right cylinder is formed with spigot surface (15).
4, driving power transmission part according to claim 3 is characterized in that:
Described right cylinder is plane or cambered surface in the side of the described body axis of distance farthest.
5, according to each described driving power transmission part of claim 1 to 4, it is characterized in that:
Described right cylinder has three, and the line between them is a triangle.
6, driving power transmission part according to claim 5 is characterized in that:
Described body also has the axial region (122) that axially stretches out along described driving force transmission gear (123), and described three right cylinders are evenly distributed on the circumference of described axial region (122) front end face, and the center of circle of this circle is positioned on the axis of described axial region (122).
7, driving power transmission part according to claim 5 is characterized in that:
Described three right cylinders are evenly distributed on described driving force and transmit on the circumference of gear (123) front end face (125), and the center of circle of this circle is positioned on the axis of described driving force transmission gear (123).
8, handle box comprises:
The handle box framework;
Be supported in the photosensitive drums of described handle box framework rotationally, one of this photosensitive drums is vertically held and is provided with a driving power transmission part (12);
Described driving power transmission part (12) comprises having the body that driving force is transmitted gear (123), and this body is provided with by cooperating the projection (13) of accepting driving force with the shrinkage pool (81) of driving force delivery;
It is characterized in that:
Described projection (13) be many along described body shaft to the right cylinder that protrudes.
9, handle box according to claim 8 is characterized in that:
Every right cylinder is provided with the anticreep groove (14) that is basically perpendicular to described body axis when accepting driving force and on the side of described shrinkage pool (81) orifice edge (82) applying.
10, according to Claim 8 or 9 described handle boxes, it is characterized in that:
Described body also has the axial region (122) that axially stretches out along described driving force transmission gear (123); Described right cylinder has three, and they are evenly distributed on the circumference of described axial region (122) front end face, and the center of circle of this circle is positioned on the axis of described axial region (122).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200454945U CN201177731Y (en) | 2008-03-22 | 2008-03-22 | Driving force transmission member and processing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200454945U CN201177731Y (en) | 2008-03-22 | 2008-03-22 | Driving force transmission member and processing box |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201177731Y true CN201177731Y (en) | 2009-01-07 |
Family
ID=40217753
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200454945U Expired - Fee Related CN201177731Y (en) | 2008-03-22 | 2008-03-22 | Driving force transmission member and processing box |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201177731Y (en) |
-
2008
- 2008-03-22 CN CNU2008200454945U patent/CN201177731Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090107 |