CN204116809U - 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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- CN204116809U CN204116809U CN201420472789.6U CN201420472789U CN204116809U CN 204116809 U CN204116809 U CN 204116809U CN 201420472789 U CN201420472789 U CN 201420472789U CN 204116809 U CN204116809 U CN 204116809U
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- 229910052799 carbon Inorganic materials 0.000 description 7
- 239000000428 dust Substances 0.000 description 7
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- 239000000843 powder Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
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- 238000009434 installation Methods 0.000 description 2
- 238000007639 printing Methods 0.000 description 2
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Abstract
The utility model 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 comprises body and is driven bar.Comprising guidepost and the input head being positioned at guidepost length direction side by driving bar, at input head along guidepost length direction back in the outer end wall of guidepost, being provided with the projection extended outwardly along guidepost 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 driving stem with driven bar engage transmitting torque time, from outer end wall to the distance between the center line of column output gear; R is the radius of column output gear.There is transmitting torque stablize, depart from and engage advantage smoothly.
Description
Technical field
The utility model relates to for the moment of torsion receiving unit of transmission 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 laser printer of basic comprising core, is that photosensitive drum surface is charged equably by charging roller.Laser scanner to be launched containing image information and through the laser beam of ovennodulation to photosensitive drums external cylindrical surface, after laser beam irradiation, form distribution at the cylindrical surface of photosensitive drums deposit discrepant static charge distribution plan, that is the electrostatic latent image corresponding with image to be printed.Afterwards, the developer of carbon dust that autography roller transmits and so under the state regulating thickness through powder outlet cutter, then is adsorbed on the surface of photosensitive drums, and after being covered by aforementioned electrostatic sub-image, converting to can macroscopic visual image.Along with the rotation of photosensitive drums, the visual image formed at photosensitive drum surface by carbon dust replaces to the position at transfer roll place.Through the effect of the transfer voltage entrained by transfer roll, the carbon dust of visual image form is transferred on the surface of the recording mediums such as paper, with after through warm-up mill and backer roll the carbon dust to the visual image form on recording medium carry out heating pressurization after, make carbon dust penetrate in the fibrage of recording medium, the visual image that carbon dust is formed for good and all is solidified on recording medium.Visual image in photosensitive drums is after being transferred roller transfer, and residual carbon dust attached to it strikes off in useless powder collecting bin by the powder scraping blade that gives up, and photosensitive drum surface is eliminated after electrostatic through corresponding electric eliminating equipment and returned to without the dustless stand-by state of electricity.This completes a basic imaging workflow.The result of this flow process iterative cycles running, just can 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, passes to photosensitive drums 101 via driving stem 200, impels 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 more easily occurs, 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, and publication number is disclose the innovation and creation that name is called torque transmission, processing box for laser printer in the Chinese invention patent application of CN103376696A.It discloses a kind of moment of torsion receiving unit as shown in Figure 3 from technical spirit, it comprises body 1, driven bar 2, guidepost 21 and the input head 22 being positioned at described guidepost 21 length direction side is comprised by driving bar 2, input head 22 is greater than guidepost 21 along the size of guidepost 21 transverse direction, at input head 22 along guidepost 21 length direction back in the outer end wall 23 of guidepost 21, position in outer end wall 23 along guidepost 21 lateral runout outer end wall 23 center, be provided with the projection 24 extended outwardly along guidepost 21 length direction, body 1 is provided with container cavity 11, the inwall being parallel to body 1 axis at container cavity 11 is provided with the input arm 12 that the radial center towards body 1 extends, the outer wall being parallel to its length direction at guidepost 21 is provided with the output arm 25 laterally outwardly extended along guidepost 21, guidepost 21 is arranged in container cavity 11 and can moves along the axial reciprocating of body 1, in the circumference of container cavity 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 also included in the position-limit mechanism axially limited by the moving area driving bar of body.
Be used for transmitting for US2008/0152388A1 the problem that the sphere type universal joint of revolving force easily deviates from from gear, the moment of torsion receiving unit that CN103376696A provides is provided with input arm on its body, by drive between bar and body body shaft to or longitudinally on keep the matching relationship that can mutually move back and forth, and position-limit mechanism defines by driving bar at body shaft moving area upwards, simultaneously the component parts end cap of position-limit mechanism makes to be driven bar entirety after the position of output arm is defined in container cavity and is also fixed on body.This make, input arm on body accepts the rotary driving force transmitted by the output arm driven on bar, body is formed rotate, and then drive other service parts to enter rotary work state, simultaneously, position-limit mechanism defines by driving bar at body shaft moving area upwards, to be limited in the container cavity of body interior by the building block guidepost driving bar, avoid the risk by driving bar and coming 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 adopted to adopt as heir the above-mentioned characteristic of moment of torsion receiving unit, machine-falling steady when having an installation, the advantage of dependable performance, working stability during transmission revolving force.
But, there is handle box in actual use when needing to take out from laser printer in the moment of torsion receiving unit of CN103376696A, the situation that handle box can not be removed swimmingly, namely there is " card " phenomenon, find after deliberation: though driving stem 200 on laser printer with driven that bar 2 engages afterwards can reliably transfer of torque, and working stability, but when operating stopping, due to the position stopped, namely be 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 of taking out handle box is contrary with driving the Impact direction engaged, and as Fig. 3, projection 24 is longer to the distance H on the summit that extends outwardly along guidepost 21 length direction from outer end wall 23, be greater than the diameter of the column output gear 201 on driving stem 200, therefore " card " even stuck phenomenon is produced.
Summary of the invention
Fundamental purpose of the present utility model is to provide a kind of moment of torsion receiving unit improved;
Another object of the present utility model is to provide the photosensitive drums that a kind of moment of torsion receiving unit adopting this to improve builds;
An object more of the present utility model 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 fundamental purpose, the utility model provides a kind of moment of torsion receiving unit, it is for receiving the moment of torsion of laser printer driving stem, and the end of driving stem has the pair of columnar output gear along the vertical extension of rod axis, and moment of torsion receiving unit comprises body and driven bar.Guidepost and the input head being positioned at guidepost length direction side is comprised by driving bar, input head is greater than guidepost along the size of guidepost transverse direction, at input head along guidepost length direction back in the outer end wall of guidepost, position in outer end wall along guidepost lateral runout outer end wall center, is provided with the projection extended outwardly along guidepost length direction.Body is provided with container cavity, container cavity be parallel to body shaft to inwall on be provided with the input arm that the radial center towards body extends, the outer wall being parallel to its length direction at guidepost is provided with the output arm laterally outwardly extended along guidepost.Guidepost is arranged in container cavity and can moves along the axial reciprocating of body, and in the circumference of container cavity, 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 driving stem with driven bar engage transmitting torque time, from outer end wall to the distance between the center line of column output gear;
R is the radius of column output gear.
Further scheme is h=r.
Further scheme is that projection has one perpendicular to the concave surface of the column on its length direction, being positioned at concave surface with contact region during column output gear transmitting torque.
For realizing another object of the present utility model, the photosensitive drums that the utility model provides comprises drum barrel and moment of torsion receiving unit, moment of torsion receiving unit is for receiving the moment of torsion of laser printer driving stem, the end of driving stem has the pair of columnar output gear along the vertical extension of rod axis, and moment of torsion receiving unit comprises body and driven bar.Guidepost and the input head being positioned at guidepost length direction side is comprised by driving bar, input head is greater than guidepost along the size of guidepost transverse direction, at input head along guidepost length direction back in the outer end wall of guidepost, position in outer end wall along guidepost lateral runout outer end wall center, is provided with the projection extended outwardly along guidepost length direction.Body is provided with container cavity, container cavity be parallel to body shaft to inwall on be provided with the input arm that the radial center towards body extends, the outer wall being parallel to its length direction at guidepost is provided with the output arm laterally outwardly extended along guidepost.Guidepost is arranged in container cavity and can moves along the axial reciprocating of body, and in the circumference of container cavity, 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 driving stem with driven bar engage transmitting torque time, from outer end wall to the distance between the center line of column output gear;
R is the radius of column output gear.
Further scheme is h=r.
Further scheme is that projection has one perpendicular to the concave surface of the column on its length direction, being positioned at described concave surface with contact region during column output gear transmitting torque.
For realizing an object more of the present utility model, the handle box that the utility model provides comprises photosensitive drums, photosensitive drums comprises drum barrel and moment of torsion receiving unit, moment of torsion receiving unit is for receiving the moment of torsion of laser printer driving stem, the end of driving stem has the pair of columnar output gear along the vertical extension of rod axis, described moment of torsion receiving unit body and driven bar.Guidepost and the input head being positioned at guidepost length direction side is comprised by driving bar, input head is greater than guidepost along the size of guidepost transverse direction, at input head along guidepost length direction back in the outer end wall of guidepost, position in outer end wall along guidepost lateral runout outer end wall center, is provided with the projection extended outwardly along guidepost length direction.Body is provided with container cavity, container cavity be parallel to body shaft to inwall on be provided with the input arm that the radial center towards body extends, the outer wall being parallel to its length direction at guidepost is provided with the output arm laterally outwardly extended along guidepost.Guidepost is arranged in container cavity and can moves along the axial reciprocating of body, and in the circumference of container cavity, 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 driving stem with driven bar engage transmitting torque time, from outer end wall to the distance between the center line of column output gear;
R is the radius of column output gear.
Further scheme is h=r.
Further scheme is that projection has one perpendicular to the concave surface of the column on its length direction, being positioned at concave surface with contact region during column output gear transmitting torque.
From above scheme, the utility model has carried out careful design to the H value of projection for the closely-related h value of driving stem and r value, making driving stem with not only reliable and stable when transmitting torque by driving engaging of bar, can also effectively prevent when departing from engagement " card " that dead-centre position produces or stuck.
Accompanying drawing explanation
In following institute drawings attached, for describe the problem clear for the purpose of, only closely related with the utility model, but do not belong to component of the present utility model--driving stem is all shown in broken lines, with illustrate its structure and with the utility model 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 structural drawing of existing moment of torsion receiving unit;
Fig. 4 be in the utility model moment of torsion receiving unit by the structural drawing driving bar;
Fig. 5 is driven bar and the first engagement figure of driving stem in the utility model moment of torsion receiving unit;
Fig. 6 is driven bar and driving stem the second engagement figure in the utility model moment of torsion receiving unit;
Fig. 7 be in the utility model moment of torsion receiving unit by driving bar and H, h, r value relation of driving stem under the first engagement, and the concave surface schematic diagram in projection;
Fig. 8 be in the utility model moment of torsion receiving unit by driving bar and driving stem schematic diagram before engagement;
Fig. 9 be in the utility model moment of torsion receiving unit by drive bar engage with driving stem after schematic diagram;
Figure 10 is that the utility model is subject to drive the view of bar 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 utility model is described in further detail.
Embodiment
According to moment of torsion receiving unit of the present utility model, and the photosensitive drums to be built by it and the major constituents of handle box are same as the prior art, those skilled in the art can consult near field prior art correlation technique data and in conjunction with the introduction of instructions background technology part to know the essential structure situation of the utility model moment of torsion receiving unit, photosensitive drums and handle box.Given this, in the description of the utility model moment of torsion receiving unit, photosensitive drums and handle box embodiment, can effectively prevent " card " or stuck design feature from carrying out emphasis description when departing from engagement by relating to regard to the utility model moment of torsion receiving unit, photosensitive drums and handle box, that is, only for being described in detail by the structure improvement part driving bar in the utility model handle box or photosensitive drums or moment of torsion receiving unit.
See Fig. 4, main improvement of the present utility model is the H value design of protruding 24, H value is the distance of outer end wall 23 to projection 24 along guidepost 21 axially between outward extending summit 26 of input head, no matter be prior art or the utility model, outer end wall 23 is all designed to curved form usually, 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 by drive bar 2 and driving stem 200 engage be in the first state time, namely the part on the left of the left end of driving stem 200 or other column output gears 201 has pushed up the input head by driving bar 2, and the column output gear 201 of driving stem 200 does not touch 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 the radius r being greater than column output gear 201.
See Fig. 6, when driven bar 2 to engage with driving stem 200 be in the second state time, namely the part on the left of the left end of driving stem 200 or other column output gears 201 does not touch the input head by driving bar 2, and the column output gear 201 of driving stem 200 touches outer end wall 23, between the two under gapless situation, h=r.
See Fig. 7, Fig. 7 shows in the utility model embodiment and is driven bar 2 and driving stem 200 the first state ingear, and wherein H value is less than h+r value, and, in the process of transmitting torque, protruding 24 with the contact region of column output gear 201 be positioned at protruding 24 concave surface 241 within.The setting of concave surface 241, can guarantee the stable of transmitting torque, prevents column output gear 201 from departing from inadequately in the process of transmitting torque and the engaging of projection 24.And H value is less than h+r value, column output gear 201 can be made to depart from swimmingly and projection 24 engage when needing.
See more clearly finding out the concave surface 241 arranged on the stress surface of projection in Fig. 8, Fig. 8.
See Fig. 9, can more clearly see when driving stem 200 drives bar 2 to show that arrow aspect rotates by Fig. 9 in Fig. 9, go out the anticreep effect of concave surface 241 in transmitting torque process, that is, driving stem 200 can be made and driven when to have axial force between bar 2 to keep stable delivery moment of torsion.
See Figure 10, Figure 11, when driving stem 200 with driven bar 2 engage time, from the axis of column output gear 201, the projection of concave surface 241 is curves that a curvature is less than column output gear 201 curvature, both curvature is more close, keep stable better during transmitting torque, but disengaging engagement more has some setbacks when needs.
See table; for existing a few money laser printer; after recording the value of column output gear radius r on its driving stem; the bar that driven according to handle box of the present utility model devises a series of H value; these handle boxes are through installation printing test; property indices evenly meets the requirements, and handle box action is taken out in the shutdown all having done more than 30 times in print procedure, and the process of taking-up 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 driving stem, the end of described driving stem has the pair of columnar output gear along the vertical extension of rod axis, and described moment of torsion receiving unit comprises body and driven bar;
Describedly comprise guidepost by driving bar and be positioned at the input head of described guidepost length direction side, described input head is greater than described guidepost along the size of described guidepost transverse direction, at described input head along described guidepost length direction back in the outer end wall of described guidepost, position in described outer end wall along outer end wall center described in described guidepost lateral runout, is provided with the projection extended outwardly along described guidepost length direction;
Described body is provided with container cavity, described container cavity be parallel to described body shaft to inwall on be provided with the input arm that the radial center towards described body extends, the outer wall being parallel to its length direction at described guidepost is provided with the output arm laterally outwardly extended along described guidepost;
Described guidepost is arranged in described container cavity and can moves along the axial reciprocating of described body, and in the circumference of described container cavity, 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 the distance of described projection between described outer end wall to the end points extended outwardly;
H be described driving stem with described driven bar engage transmitting torque time, from described outer end wall to the distance between the center line of described column output gear;
R is the radius of described column output gear.
2. moment of torsion receiving unit according to claim 1, is characterized in that:
h=r。
3. moment of torsion receiving unit according to claim 1 or 2, is characterized in that:
Described projection has one perpendicular to the concave surface of the column on its length direction, being positioned at described concave surface with contact region during described column output gear transmitting torque.
4. photosensitive drums, comprise drum barrel and moment of torsion receiving unit, described moment of torsion receiving unit is for receiving the moment of torsion of laser printer driving stem, and the end of described driving stem has the pair of columnar output gear along the vertical extension of rod axis, and described moment of torsion receiving unit comprises body and driven bar;
Describedly comprise guidepost by driving bar and be positioned at the input head of described guidepost length direction side, described input head is greater than described guidepost along the size of described guidepost transverse direction, at described input head along described guidepost length direction back in the outer end wall of described guidepost, position in described outer end wall along outer end wall center described in described guidepost lateral runout, is provided with the projection extended outwardly along described guidepost length direction;
Described body is provided with container cavity, described container cavity be parallel to described body shaft to inwall on be provided with the input arm that the radial center towards described body extends, the outer wall being parallel to its length direction at described guidepost is provided with the output arm laterally outwardly extended along described guidepost;
Described guidepost is arranged in described container cavity and can moves along the axial reciprocating of described body, and in the circumference of described container cavity, 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 the distance of described projection between described outer end wall to the end points extended outwardly;
H be described driving stem with described driven bar engage transmitting torque time, from described outer end wall to the distance between the center line of described column output gear;
R is the radius of described column output gear.
5. photosensitive drums according to claim 4, is characterized in that:
h=r。
6. photosensitive drums according to claim 4 or 5, is characterized in that:
Described projection has one perpendicular to the concave surface of the column on its length direction, being positioned at described concave surface with contact region during described column output gear transmitting torque.
7. handle box, comprise photosensitive drums, described photosensitive drums comprises drum barrel and moment of torsion receiving unit, described moment of torsion receiving unit is for receiving the moment of torsion of laser printer driving stem, the end of described driving stem has the pair of columnar output gear along the vertical extension of rod axis, and described moment of torsion receiving unit comprises body and driven bar;
Describedly comprise guidepost by driving bar and be positioned at the input head of described guidepost length direction side, described input head is greater than described guidepost along the size of described guidepost transverse direction, at described input head along described guidepost length direction back in the outer end wall of described guidepost, position in described outer end wall along outer end wall center described in described guidepost lateral runout, is provided with the projection extended outwardly along described guidepost length direction;
Described body is provided with container cavity, described container cavity be parallel to described body shaft to inwall on be provided with the input arm that the radial center towards described body extends, the outer wall being parallel to its length direction at described guidepost is provided with the output arm laterally outwardly extended along described guidepost;
Described guidepost is arranged in described container cavity and can moves along the axial reciprocating of described body, and in the circumference of described container cavity, 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 the distance of described projection between described outer end wall to the end points extended outwardly;
H be described driving stem with described driven bar engage transmitting torque time, from described outer end wall to the distance between the center line of described column output gear;
R is the radius of described column output gear.
8. handle box according to claim 7, is characterized in that:
h=r。
9. handle box according to claim 7 or 8, is characterized in that:
Described projection has one perpendicular to the concave surface of the column on its length direction, being positioned at described concave surface with contact region during described column output gear transmitting torque.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420472789.6U CN204116809U (en) | 2014-08-20 | 2014-08-20 | Moment of torsion receiving unit, photosensitive drums and handle box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420472789.6U CN204116809U (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 |
|---|---|
| CN204116809U true CN204116809U (en) | 2015-01-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420472789.6U Withdrawn - After Issue CN204116809U (en) | 2014-08-20 | 2014-08-20 | Moment of torsion receiving unit, photosensitive drums and handle box |
Country Status (1)
| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155864B (en) * | 2014-08-20 | 2016-08-17 | 珠海天威飞马打印耗材有限公司 | Moment of torsion receiving unit, photosensitive drums and handle box |
-
2014
- 2014-08-20 CN CN201420472789.6U patent/CN204116809U/en not_active Withdrawn - After Issue
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104155864B (en) * | 2014-08-20 | 2016-08-17 | 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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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20150121 Effective date of abandoning: 20160817 |
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| C25 | Abandonment of patent right or utility model to avoid double patenting |