CN104155864B - Moment of torsion receiving unit, photosensitive drums and handle box - Google Patents
Moment of torsion receiving unit, photosensitive drums and handle box Download PDFInfo
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- CN104155864B CN104155864B CN201410413347.9A CN201410413347A CN104155864B CN 104155864 B CN104155864 B CN 104155864B CN 201410413347 A CN201410413347 A CN 201410413347A CN 104155864 B CN104155864 B CN 104155864B
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Abstract
The present invention relates to moment of torsion receiving unit and using this moment of torsion receiving unit as the photosensitive drums of its component parts and handle box.Moment of torsion receiving unit includes body and driven bar.Driven bar includes lead and be positioned at the input head of lead length direction side, input head along lead length direction back to the outer end wall of lead on, be provided with the projection extended outwardly along lead length direction.Protruding H value meets following relational expression: h ＜ H≤h+r；Wherein: H is protruding distance between outer end wall to the end points extended outwardly；H be drive rod engage with driven bar transmission moment of torsion time, from outer end wall to the center line of column output gear between distance;R is the radius of column output gear.There is transmission moment of torsion stable, be disengaged from advantage smoothly.
Description
Technical field
The present invention relates to the moment of torsion receiving unit for transmitting revolving force and using this moment of torsion receiving unit as the photosensitive drums of its component parts and handle box.
Background technology
Handle box, as the imaging process of the basic laser printer constituting core, is that photosensitive drum surface is charged equably by charging roller.Laser scanner contains image information and the laser beam through ovennodulation to the transmitting of photosensitive drums external cylindrical surface, after laser beam irradiates, discrepant electrostatic charge distribution map, that is the electrostatic latent image corresponding with image to be printed are deposited in the cylindrical surface formation distribution in photosensitive drums.Afterwards, the developer of carbon dust that autography roller transmits etc is when through powder outlet cutter regulation thickness, then absorption is on the surface of photosensitive drums, and after being covered by aforementioned electrostatic sub-image, being converted into can be with macroscopic visual image.Along with the rotation of photosensitive drums, carbon dust the visual image formed at photosensitive drum surface replaces to the position at transfer roll place.Effect through the transfer voltage entrained by transfer roll, the carbon dust of visual image form is transferred on the surface of the record media such as paper, after the most heated roller and backer roll carry out heating pressurization to the carbon dust of the visual image form on record medium, making carbon dust penetrate in the fibrage of record medium, the visual image formed by carbon dust is for good and all solidified on recording on medium.Visual image in photosensitive drums is after being transferred roller transfer, and residual carbon dust attached to it is struck off to useless powder collecting bin by the powder scraping blade that gives up, and photosensitive drum surface recovers to the stand-by state dustless without electricity after corresponding electric eliminating equipment eliminates electrostatic.This completes a basic imaging workflow.The result of this flow process iterative cycles operating, it is possible to obtain the image required for printing person.
See Fig. 1, Fig. 2, the rotary driving force that laser printer produces, i.e. moment of torsion, pass to photosensitive drums 101 via drive rod 200, promote handle box 100 to enter duty.American documentation literature US2008/0152388A1 discloses a kind of handle box, has a sphere type universal joint in the moment of torsion receiving unit of its photosensitive drums end.This sphere type universal joint easily produces less desirable separation, and particularly in transportation, this phenomenon is more easy to be occurred, thus causes the transfer function of sphere type universal joint to lose or job insecurity.
As the improvement to US2008/0152388A1 public technology scheme, the applicant is on October 30th, 2013 in publication date, discloses the innovation and creation of entitled torque transmission, processing box for laser printer in the Chinese invention patent application of Publication No. CN103376696A.nullIt discloses a kind of moment of torsion receiving unit as shown in Figure 3 from technical spirit，It includes body 1、Driven bar 2，Driven bar 2 includes lead 21 and is positioned at the input head 22 of described lead 21 length direction side，Input head 22 is more than lead 21 along the size that lead 21 is horizontal，Input head 22 along lead 21 length direction back to the outer end wall 23 of lead 21 on，In outer end wall 23 along the position at lead 21 lateral run-out outer end wall 23 center，It is provided with the projection 24 extended outwardly along lead 21 length direction，Receiving chamber 11 it is provided with on body 1，The input arm 12 being provided with the radial center extension towards body 1 it is parallel on the inwall that body 1 is axial in receiving chamber 11，The outer wall that lead 21 is parallel to its length direction is provided with the output arm 25 laterally outwardly extended along lead 21，Lead 21 is positioned in receiving chamber 11 and can move along the axial reciprocating of body 1，In the circumference accommodating chamber 11, output arm 25 forms abutting contact in the position at input arm 12 place with input arm 12，Moment of torsion receiving unit is additionally included in the position-limit mechanism of the upper moving area limiting driven bar of body.
It is used for transmitting the sphere type universal joint easily problem of abjection from gear of revolving force for US2008/0152388A1, the moment of torsion receiving unit that CN103376696A provides is provided with input arm on its body, axially or keep the matching relationship that can mutually move back and forth in longitudinal direction at body between driven bar and body, and position-limit mechanism define driven bar at body shaft moving area upwards, the component parts end cap of position-limit mechanism makes driven bar entirety also be fixed on body after the position of output arm is defined in receiving chamber simultaneously.This make, input arm on body accepts the rotary driving force that the output arm on driven bar transmits, make body be formed to rotate, and then drive other workpieces to enter rotary work state, simultaneously, position-limit mechanism defines that driven bar is at body shaft moving area upwards, the building block lead of driven bar is limited in the receiving chamber of body interior, avoid the risk that driven bar comes off from body, thus ensure that whole moment of torsion receiving unit has good reliability and stability when transmitting rotary driving force.The photosensitive drums of this moment of torsion receiving unit and handle box is used to adopt as heir the above-mentioned characteristic of moment of torsion receiving unit, machine-falling steady when having installation, dependable performance, the advantage of working stability during transmission revolving force.
nullBut，There are handle box needs in actual use when taking out from laser printer in the moment of torsion receiving unit of CN103376696A，The situation that handle box can not be removed swimmingly，I.e. there is " card " phenomenon，It has been investigated that: though the drive rod 200 on laser printer can reliably transfer of torque after engaging with driven bar 2，And working stability，But when operating stops，Due to the position stopped，It is i.e. random relative to the corner of handle box removing direction，Therefore，The dead-centre position that the position of engagement is substantially vertical with handle box removing direction will be there is，When at that position，The direction taking out handle box is contrary with the Impact direction driving engagement，And such as Fig. 3，Protruding 24 from outer end wall 23 to longer along extend outwardly distance H on summit of lead 21 length direction，Diameter more than the column output gear 201 on drive rod 200，Therefore " card " even stuck phenomenon is produced.
Summary of the invention
The main object of the present invention is to provide a kind of moment of torsion receiving unit improved；
It is a further object of the present invention to provide the photosensitive drums that a kind of moment of torsion receiving unit using this to improve builds；
Another object of the present invention is to provide the handle box of the moment of torsion receiving unit structure that a kind of employing improves.
In order to realize above-mentioned main purpose, the invention provides a kind of moment of torsion receiving unit, it is for receiving the moment of torsion of laser printer drive rod, and the end of drive rod has the pair of columnar output gear along the vertical extension of rod axis, and moment of torsion receiving unit includes body and driven bar.Driven bar includes lead and is positioned at the input head of lead length direction side, input head is more than lead along the size that lead is horizontal, input head along lead length direction back to the outer end wall of lead on, in outer end wall along the position at lead lateral run-out outer end wall center, it is provided with the projection extended outwardly along lead length direction.It is provided with receiving chamber on body, is parallel on the inwall that body is axial the input arm being provided with the radial center extension towards body in receiving chamber, the outer wall that lead is parallel to its length direction is provided with the output arm laterally outwardly extended along lead.Lead is positioned in receiving chamber and can move along the axial reciprocating of body, and in the circumference accommodating chamber, output arm forms abutting contact in the position at input arm place with described input arm.Protruding H value meets following relational expression
H ＜ H≤h+r；Wherein
H is protruding distance between outer end wall to the end points extended outwardly；
H be drive rod engage with driven bar transmission moment of torsion time, from outer end wall to the center line of column output gear between distance;
R is the radius of column output gear.
Further scheme is h=r.
Further scheme is the concave surface that projection has a column being perpendicular on its length direction, and the contact zone when with column output gear transmission moment of torsion is positioned at concave surface.
For realizing another object of the present invention, the photosensitive drums that the present invention provides includes drum barrel and moment of torsion receiving unit, moment of torsion receiving unit is for receiving the moment of torsion of laser printer drive rod, the end of drive rod has the pair of columnar output gear along the vertical extension of rod axis, and moment of torsion receiving unit includes body and driven bar.Driven bar includes lead and is positioned at the input head of lead length direction side, input head is more than lead along the size that lead is horizontal, input head along lead length direction back to the outer end wall of lead on, in outer end wall along the position at lead lateral run-out outer end wall center, it is provided with the projection extended outwardly along lead length direction.It is provided with receiving chamber on body, is parallel on the inwall that body is axial the input arm being provided with the radial center extension towards body in receiving chamber, the outer wall that lead is parallel to its length direction is provided with the output arm laterally outwardly extended along lead.Lead is positioned in receiving chamber and can move along the axial reciprocating of body, and in the circumference accommodating chamber, output arm forms abutting contact in the position at input arm place with input arm.Protruding H value meets following relational expression
H ＜ H≤h+r；Wherein
H is protruding distance between outer end wall to the end points extended outwardly；
H be drive rod engage with driven bar transmission moment of torsion time, from outer end wall to the center line of column output gear between distance；
R is the radius of column output gear.
Further scheme is h=r.
Further scheme is the concave surface that projection has a column being perpendicular on its length direction, and the contact zone when with column output gear transmission moment of torsion is positioned at described concave surface.
For realizing another object of the present invention, the handle box that the present invention provides includes photosensitive drums, photosensitive drums includes drum barrel and moment of torsion receiving unit, moment of torsion receiving unit is for receiving the moment of torsion of laser printer drive rod, the end of drive rod has the pair of columnar output gear along the vertical extension of rod axis, described moment of torsion receiving unit body and driven bar.Driven bar includes lead and is positioned at the input head of lead length direction side, input head is more than lead along the size that lead is horizontal, input head along lead length direction back to the outer end wall of lead on, in outer end wall along the position at lead lateral run-out outer end wall center, it is provided with the projection extended outwardly along lead length direction.It is provided with receiving chamber on body, is parallel on the inwall that body is axial the input arm being provided with the radial center extension towards body in receiving chamber, the outer wall that lead is parallel to its length direction is provided with the output arm laterally outwardly extended along lead.Lead is positioned in receiving chamber and can move along the axial reciprocating of body, and in the circumference accommodating chamber, output arm forms abutting contact in the position at input arm place with input arm.Protruding H value meets following relational expression
H ＜ H≤h+r；Wherein
H is protruding distance between outer end wall to the end points extended outwardly；
H be drive rod engage with driven bar transmission moment of torsion time, from outer end wall to the center line of column output gear between distance；
R is the radius of column output gear.
Further scheme is h=r.
Further scheme is the concave surface that projection has a column being perpendicular on its length direction, and the contact zone when with column output gear transmission moment of torsion is positioned at concave surface.
From above scheme, the present invention has carried out careful design to protruding H value for h value closely-related with drive rod and r value, make engaging of drive rod and driven bar not only reliable and stable when transmitting moment of torsion, moreover it is possible to effectively prevent " card " or stuck that dead-centre position produces when being disengaged from.
Accompanying drawing explanation
In following all accompanying drawings, for describe the problem clear for the sake of, the most closely related with the present invention, but and be not belonging to the present invention component---drive rod is the most shown in broken lines, with illustrate its structure and with present invention matching relationship at work.
Fig. 1 is the structural representation of existing handle box；
Fig. 2 is the structural representation of existing photosensitive drums；
Fig. 3 is the structure chart of existing moment of torsion receiving unit；
Fig. 4 is the structure chart of the driven bar in moment of torsion receiving unit of the present invention；
Fig. 5 is the driven bar in moment of torsion receiving unit of the present invention and the first engagement figure of drive rod；
Fig. 6 is the driven bar in moment of torsion receiving unit of the present invention and drive rod the second engagement figure；
Fig. 7 is the driven bar in moment of torsion receiving unit of the present invention and drive rod H, h, r value relation under the first engagement, and the concave surface schematic diagram in projection；
Fig. 8 is the driven bar in moment of torsion receiving unit of the present invention and drive rod schematic diagram before engagement；
Fig. 9 is the schematic diagram after the driven bar in moment of torsion receiving unit of the present invention engages with drive rod；
Figure 10 is the present invention driven bar view along column output gear center line direction；
Figure 11 is the A partial enlarged drawing of Figure 10.
Below in conjunction with drawings and Examples, the invention will be further described.
Detailed description of the invention
Moment of torsion receiving unit according to the present invention, and the main structure of the photosensitive drums that built by it and handle box is same as the prior art, those skilled in the art see the correlation technique data of near field prior art and combine the introducing with the essential structure situation knowing moment of torsion receiving unit of the present invention, photosensitive drums and handle box of specification background section.Given this, in the description of moment of torsion receiving unit of the present invention, photosensitive drums and handle box detailed description of the invention, to relate to effectively preventing " card " or stuck design feature from carrying out emphasis description when being disengaged from regard to moment of torsion receiving unit of the present invention, photosensitive drums and handle box, that is, the structure improvement part only for the driven bar in handle box of the present invention or photosensitive drums or moment of torsion receiving unit is described in detail.
See Fig. 4, the main improvement of the present invention is the H value design of protruding 24, H value is that the outer end wall 23 of input head is to protruding 24 along the distance between the axially outwardly extending summit of lead 21 26, either prior art or the present invention, outer end wall 23 is generally designed to curved form, the outer end wall starting point measuring H value under this situation is the summit of the outer end wall 23 between two projections 24, i.e. the low order end of outer end wall 23 in Fig. 4.
See Fig. 5, when driven bar 2 and drive rod 200 engage be in the first state time, i.e. part on the left of the left end of drive rod 200 or other column output gears 201 has pushed up the input head of driven bar 2, and the column output gear 201 of drive rod 200 is not in contact with to outer end wall 23, when having a gap between the two, h value is the distance between the center line of outer end wall 23 to column output gear 201, and under this situation, h is greater than the radius r's of column output gear 201.
See Fig. 6, when driven bar 2 engages with drive rod 200 and to be in the second state, i.e. the part on the left of the left end of drive rod 200 or other column output gears 201 is not in contact with the input head to driven bar 2, and the column output gear 201 of drive rod 200 touches outer end wall 23, under the most gapless situation, h=r.
See Fig. 7, Fig. 7 shows driven bar 2 and drive rod 200 the first state ingear in the embodiment of the present invention, and wherein H value is less than h+r value, and, during transmission moment of torsion, within the contact zone of projection 24 and column output gear 201 is in the concave surface 241 of protruding 24.The setting of concave surface 241, it can be ensured that transmission the stablizing of moment of torsion, prevents column output gear 201 from departing from inadequately during transmission moment of torsion and the engaging of projection 24.And H value is less than h+r value, column output gear 201 can be made needing when to depart from swimmingly and the engaging of projection 24.
See Fig. 8, Fig. 8 can be seen more clearly from the concave surface 241 arranged on protruding stress surface.
See Fig. 9, Fig. 9 can more clearly see when drive rod 200 drives driven bar 2 to show that arrow aspect rotates by Fig. 9, go out the concave surface 241 anticreep effect during transmission moment of torsion, i.e. when can make to have between drive rod 200 and driven bar 2 axial force, keep stable delivery moment of torsion.
See Figure 10, Figure 11, when drive rod 200 engages with driven bar 2, from column output gear 201 axially, the projection of concave surface 241 is the curvature curve less than column output gear 201 curvature, both curvature closer to, it is stable the best to keep during transmission moment of torsion, but is disengaged from more having some setbacks needs when.
See following table; for existing a few money laser printers; record on its drive rod after the value of column output gear radius r; the driven bar for the treatment of in accordance with the present invention box devises a series of H value; these handle boxes are through installation printing test; property indices uniformly meets the requirements, and handle box action is taken out in the shutdown all having made more than 30 times in print procedure, and process of taking out all occurs without Caton phenomenon.
| R value (millimeter) | H value (millimeter) | H value (millimeter) |
| 1.0 | 1.5 | 2.0 |
| 1.0 | 1.0 | 2.0 |
| 1.3 | 1.5 | 2.7 |
| 1.3 | 1.3 | 2.0 |
| 1.0 | 1.4 | 2.1 |
| 1.0 | 1.0 | 1.5 |
Claims (9)
1. moment of torsion receiving unit, for receiving the moment of torsion of laser printer drive rod, the end of described drive rod has the pair of columnar output gear along the vertical extension of rod axis, and described moment of torsion receiving unit includes body and driven bar；
Described driven bar includes lead and is positioned at the input head of described lead length direction side, described input head is more than described lead along the size that described lead is horizontal, described input head along described lead length direction back to the outer end wall of described lead on, in described outer end wall along the position at outer end wall center described in described lead lateral run-out, it is provided with the projection extended outwardly along described lead length direction；
Receiving chamber it is provided with on described body, it is parallel on the inwall that described body is axial the input arm being provided with the radial center extension towards described body in described receiving chamber, the outer wall that described lead is parallel to its length direction is provided with the output arm laterally outwardly extended along described lead；
Described lead is positioned in described receiving chamber and can move along the axial reciprocating of described body, and in the circumference in described receiving chamber, described output arm forms abutting contact in the position at described input arm place with described input arm；
It is characterized in that:
The H value of described projection meets following relational expression
H ＜ H≤h+r；Wherein
H is described projection distance between described outer end wall to the end points extended outwardly；
H be described drive rod engage with described driven bar transmission moment of torsion time, from described outer end wall to described column output gear center line between distance;
R is the radius of described column output gear.
Moment of torsion receiving unit the most according to claim 1, it is characterised in that:
h=r。
Moment of torsion receiving unit the most according to claim 1 or claim 2, it is characterised in that:
Described projection has the concave surface of a column being perpendicular on its length direction, and the contact zone when with described column output gear transmission moment of torsion is positioned at described concave surface.
4. photosensitive drums, including drum barrel and moment of torsion receiving unit, described moment of torsion receiving unit is for receiving the moment of torsion of laser printer drive rod, and the end of described drive rod has the pair of columnar output gear along the vertical extension of rod axis, and described moment of torsion receiving unit includes body and driven bar；
Described driven bar includes lead and is positioned at the input head of described lead length direction side, described input head is more than described lead along the size that described lead is horizontal, described input head along described lead length direction back to the outer end wall of described lead on, in described outer end wall along the position at outer end wall center described in described lead lateral run-out, it is provided with the projection extended outwardly along described lead length direction；
Receiving chamber it is provided with on described body, it is parallel on the inwall that described body is axial the input arm being provided with the radial center extension towards described body in described receiving chamber, the outer wall that described lead is parallel to its length direction is provided with the output arm laterally outwardly extended along described lead；
Described lead is positioned in described receiving chamber and can move along the axial reciprocating of described body, and in the circumference in described receiving chamber, described output arm forms abutting contact in the position at described input arm place with described input arm；
It is characterized in that:
The H value of described projection meets following relational expression
H ＜ H≤h+r；Wherein
H is described projection distance between described outer end wall to the end points extended outwardly；
H be described drive rod engage with described driven bar transmission moment of torsion time, from described outer end wall to described column output gear center line between distance；
R is the radius of described column output gear.
Photosensitive drums the most according to claim 4, it is characterised in that:
h=r。
6. according to photosensitive drums described in claim 4 or 5, it is characterised in that:
Described projection has the concave surface of a column being perpendicular on its length direction, and the contact zone when with described column output gear transmission moment of torsion is positioned at described concave surface.
7. handle box, including photosensitive drums, described photosensitive drums includes drum barrel and moment of torsion receiving unit, described moment of torsion receiving unit is for receiving the moment of torsion of laser printer drive rod, the end of described drive rod has the pair of columnar output gear along the vertical extension of rod axis, and described moment of torsion receiving unit includes body and driven bar；
Described driven bar includes lead and is positioned at the input head of described lead length direction side, described input head is more than described lead along the size that described lead is horizontal, described input head along described lead length direction back to the outer end wall of described lead on, in described outer end wall along the position at outer end wall center described in described lead lateral run-out, it is provided with the projection extended outwardly along described lead length direction；
Receiving chamber it is provided with on described body, it is parallel on the inwall that described body is axial the input arm being provided with the radial center extension towards described body in described receiving chamber, the outer wall that described lead is parallel to its length direction is provided with the output arm laterally outwardly extended along described lead；
Described lead is positioned in described receiving chamber and can move along the axial reciprocating of described body, and in the circumference in described receiving chamber, described output arm forms abutting contact in the position at described input arm place with described input arm；
It is characterized in that:
The H value of described projection meets following relational expression
H ＜ H≤h+r；Wherein
H is described projection distance between described outer end wall to the end points extended outwardly；
H be described drive rod engage with described driven bar transmission moment of torsion time, from described outer end wall to described column output gear center line between distance；
R is the radius of described column output gear.
Handle box the most according to claim 7, it is characterised in that:
h=r。
9. according to handle box described in claim 7 or 8, it is characterised in that:
Described projection has the concave surface of a column being perpendicular on its length direction, and the contact zone when with described column output gear transmission moment of torsion is positioned at described concave surface.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410413347.9A CN104155864B (en) | 2014-08-20 | 2014-08-20 | Moment of torsion receiving unit, photosensitive drums and handle box |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410413347.9A CN104155864B (en) | 2014-08-20 | 2014-08-20 | Moment of torsion receiving unit, photosensitive drums and handle box |
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| Publication Number | Publication Date |
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| CN104155864A CN104155864A (en) | 2014-11-19 |
| CN104155864B true CN104155864B (en) | 2016-08-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107991853B (en) * | 2017-12-28 | 2024-04-26 | 珠海天威飞马打印耗材有限公司 | Rotary driving force receiving head, driving force transmission assembly and processing box |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907858A (en) * | 2009-06-16 | 2010-12-08 | 珠海天威飞马打印耗材有限公司 | Photosensitive drum driving assembly |
| CN204116809U (en) * | 2014-08-20 | 2015-01-21 | 珠海天威飞马打印耗材有限公司 | Moment of torsion receiving unit, photosensitive drums and handle box |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101907858A (en) * | 2009-06-16 | 2010-12-08 | 珠海天威飞马打印耗材有限公司 | Photosensitive drum driving assembly |
| CN204116809U (en) * | 2014-08-20 | 2015-01-21 | 珠海天威飞马打印耗材有限公司 | Moment of torsion receiving unit, photosensitive drums and handle box |
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