CN101372290B - Mechanism for picking paper sheet and paper feed device using the same - Google Patents
Mechanism for picking paper sheet and paper feed device using the same Download PDFInfo
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- CN101372290B CN101372290B CN2007100452687A CN200710045268A CN101372290B CN 101372290 B CN101372290 B CN 101372290B CN 2007100452687 A CN2007100452687 A CN 2007100452687A CN 200710045268 A CN200710045268 A CN 200710045268A CN 101372290 B CN101372290 B CN 101372290B
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- wheel clutch
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Abstract
The invention relates to a paper pick-up mechanism of a tractor, comprising the combination of a paper grabbing idler pulley and a rotating shaft of the paper grabbing idler pulley, the combination of a combing wheel and a transmission shaft and the combination of a gear cluster and a transmission gear pivot shaft. Two unidirectional clutches are respectively arranged on the transmission shaft and the transmission gear pivot shaft in a mutually parallel pattern. When the transmission shaft rotates opposite to the paper feed direction, with the action of the two unidirectional clutches, the gear cluster forms a planetary gear pattern and lifts the paper grabbing idler pulley.
Description
Technical field
The present invention is about the mechanism for picking paper sheet of the document feeder of a kind of mechanism for picking paper sheet, particularly image forming equipment.This image forming equipment comprises scanner, duplicator, chopping machine, facsimile apparatus or multifunctional paper feeding machine.
Background technology
The tradition document feeder has mechanism for picking, and it opens this document feeder inside of feed-in seriatim in order to a stacker that will be seated on the paper box.
Mechanism for picking comprises grabs paper roller paper and comber.Motor provides torsion to comber.Gear cluster is configured between the rotating shaft of the rotating shaft of grabbing paper roller and comber and transmits torsion.When carrying out paper feed, comber with grab paper roller and rotate toward paper feed direction; When stopping paper feed, the rotating shaft of comber and the rotating shaft of grabbing paper roller are rotated towards opposite paper feed direction.
It should be noted that torque spring is installed in the rotating shaft of grabbing paper roller, so rotate towards opposite paper feed direction when the rotating shaft that grab paper roller, torque spring can produce side force and make and grab paper roller and be picked up with away from putting paper box.Yet when mechanism for picking stopped paper feed, motor not only will provide the torsion of the rotating shaft that drives comber, also will provide and lift the torsion of grabbing paper roller, just can make mechanism for picking keep the rise state so motor must expend more high-power and must continue counter-rotating.
In addition, mechanism for picking can dispose non-return device or mechanism and friction wheel.Rotate towards opposite paper feed direction when the rotating shaft of comber, then non-return device or mechanism are locking-in state, and provide friction force to lift by friction wheel to grab paper roller.Yet the size of friction force is not easy control, lifts the opportunity of grabbing paper roller so be not easy to control.
The known patent case, for example US Patent 6,390463, disclose mechanism for picking paper sheet and have two spring loaded free-wheel clutchs.Two power-transfer clutchs in series are arranged in the rotating shaft of comber and are positioned at the outside of framework.Rotating shaft has a plurality of sections that separate to combine with two free-wheel clutchs respectively.Because two free-wheel clutchs are with different being arranged in the rotating shaft around direction, so have different action directions.When the rotating shaft of comber is rotated towards opposite paper feed direction, free-wheel clutch and multi-section rotation shaft produce application force and grab paper roller and framework to lift.
Yet, because power-transfer clutch is positioned at the framework outside, so the situation that can cause assembly to interfere between the assembly of power-transfer clutch and image forming equipment or document feeder; Secondly, two series connected free-wheel clutchs are not easy to combine with the rotating shaft winding of multi-region segmentation.
Summary of the invention
Based on solving the disclosed shortcoming of above-mentioned prior art, the present invention proposes a kind of new mechanism for picking paper sheet.
One of purpose of the present invention is to provide a kind of mechanism for picking paper sheet that is used for document feeder, and it can lift immediately when paper feed direction is rotated in the rotating shaft of comber and grab paper roller.
Another object of the present invention is to provide a kind of mechanism for picking paper sheet that is used for document feeder, it can not have under the rotation of continuing in the rotating shaft of comber, still keeps grabbing paper roller and is picked up.
Another purpose of the present invention is to provide a kind of mechanism for picking paper sheet that is used for document feeder, and it is because two free-wheel clutchs are arranged on mechanism for picking inside parallel to each other, so two power-transfer clutchs do not take up space and do not cause assembly to interfere with other assembly.
For reaching above-mentioned purpose, the disclosed mechanism for picking paper sheet of the present invention comprises transmission shaft, and comber is arranged on this transmission shaft, grab paper roller and be arranged on paper feed direction rotationally, and gear cluster is provided in comber and grabs between paper roller in order to transmit torsion.First free-wheel clutch is equipped on this transmission shaft again, second free-wheel clutch and gear cluster combination and parallel with first free-wheel clutch.When comber rotates towards opposite this paper feed direction, then first free-wheel clutch and the second free-wheel clutch drive gear set rotation mode that produces planetary gear type also lifts by this and grabs paper roller.
The present invention proposes a kind of paper-advance unit simultaneously, comprises paper-feeding channel and described mechanism for picking paper sheet, described mechanism for picking paper sheet in order to the paper feeding on the paper box to the described paper-feeding channel.
Below, lift preferred embodiment, and conjunction with figs. describes in detail promptly according to purpose effect of the present invention and structure configuration.
Description of drawings
Figure 1A is configuration of the present invention and paper feed view.
Figure 1B is that the present invention disposes and stops the paper feed view.
Fig. 2 is an External view of the present invention.
Fig. 3 is a structural representation of the present invention.
Fig. 4 A is the pivot of the present invention and the second ring set assembly scheme drawing.
Fig. 4 B is the pivot of the present invention and the second ring set assembly scheme drawing.
Fig. 5 is a paper feed view of the present invention.
Fig. 6 is that the present invention stops the paper feed view.
Fig. 7 is that the present invention's second ring set discharges torsion action scheme drawing.
The specific embodiment
See also Figure 1A, document feeder 10 internal configurations mechanism for picking 20.Carry out automatic paper feed when document feeder 10, mechanism for picking 20 can be opened a stacker that is seated in paper box 12 paper-feeding channel 16 of 14 feed-in document feeder seriatim 10.See also Figure 1B,, pick up mechanism of paper 20 1 ends away from putting paper box 12 when document feeder 10 stops paper feed.
See also Fig. 2,3, pick up mechanism of paper 20 and comprise framework 22, comber 32, grab paper roller 42 and gear cluster 52.
This framework 22 has two relative wall portions 24 and 26.This comber 32 is arranged between two wall portions 24 and 26, and transmission shaft 34 1 ends pass comber 32 and two wall portions 24 and 26.The other end of transmission shaft 34 is accepted the torsion of motor (not shown) output.
The combination of grabbing paper roller 42 and grabbing paper roller rotating shaft 44 is equipped between two wall portions 24 and 26.With the paper feed direction is reference direction, and this is grabbed paper roller 42 and is positioned at comber 32 upstreams.
First free-wheel clutch 62 and first ring set 63 make up respectively and are provided in transmission shaft 34 and are positioned at framework 22 inboards.First free-wheel clutch 62 is sheathed on transmission shaft 34.One end of first ring set 63 is in abutting connection with an end of comber 32, other end assembly/be set in first free-wheel clutch, 62 inside.
Second free-wheel clutch 64 and second ring set 65 are provided on this transmission gear pivot 59 respectively and are positioned at this framework 22 inboards.Second free-wheel clutch 64 is sheathed on and transmits gear pivot 59.Second ring set, 65 1 end assembly/be set in, second free-wheel clutch, 64 inside.
It should be noted that this first free-wheel clutch 62 is the power-transfer clutch of coil form with this second free-wheel clutch 64,, can make power-transfer clutch produce tight the receipts or open effect therefore by changing the power-transfer clutch rotation direction.
First free-wheel clutch 62 is arranged on transmission shaft 34 and transmission gear pivot 59 and parallel to each other with identical around direction respectively with second free-wheel clutch 64.Because comber gear 54 meshes with transmitting gear 56, so the direction of rotation of first free-wheel clutch 62 and second free-wheel clutch 64.That is to say, when first free-wheel clutch 62 for tightening, then second free-wheel clutch 64 is for loosening; Or work as first free-wheel clutch 62 for loosening, then second free-wheel clutch 64 is tight the receipts.
See also Fig. 4 A and Fig. 4 B, transmission gear pivot 59 surfaces are formed with two relative planes, 72, the second ring sets, 65 inner faces and are formed with a plurality of projection 74a, 74b, 74c and 74d.Transmit gear pivot 59 and be arranged in second ring set 65, and this projection 74a and 74b clamping plane 72.When the torsion that transmits gear pivot 59 less than the friction force between plane 72 and projection 74a and the 74b, then transmit gear pivot 59 and second ring set 65 can form synchronous rotation.
See also Fig. 5 and Figure 1A, transmission shaft 34 rotates towards paper feed direction, and then first free-wheel clutch 62 also rotates and clamping first ring set 63 towards this paper feed direction, and first ring set 63 and comber 32 are rotated towards paper feed direction.
Again, comber gear 54 is sent to transmission gear 58 with the torsion of transmission shaft 34, and comber gear 54 and the switched in opposite of transmitting gear 58, so second free-wheel clutch 64 unclamps, make to transmit that gear 58 can rotate and outputting torsion is grabbed paper roller 42 and rotated towards paper feed direction to grabbing paper roller gear 56 and driving.
See also Fig. 6 and Figure 1B, transmission shaft 34 rotates towards opposite paper feed direction, and then this first free-wheel clutch 62 also rotates towards opposite paper feed direction, and this moment, first free-wheel clutch 62 loosened and comber 32 does not rotate.
Comber gear 54 drive transmitting gears 58 make second free-wheel clutch, 64 tight receipts clamp this second ring set 65 and transmit gear pivot 59, therefore transmit gear 58 and can not rotate.
Because when transmission shaft 34 rotates towards opposite paper feed direction, comber gear 54 rotates and transmits gear 58 and do not rotate, so transmit the planetary wheel that gear 58 forms comber gear 54, that is to say, transmitting gear 58 can rotate around the periphery of comber gear 54, and lifts framework 22 simultaneously and grab paper roller 42.When motor stops operating, transmit gear 58 and still mesh comber gear 54, so grab paper roller 42 and framework 22 can not fall.Torsion spring (please indicate symbol) also can be set in the paper roller rotating shaft 44 grab friction force between paper roller rotating shaft 44 and the framework 22 with increase grabbing, make transmission shaft 34 to lift more efficiently and grab paper roller 42.
See also Fig. 7, be synchronized with the movement though the transmission gear pivot 59 and second ring set 65 produce by projection 74a and 74b clamping plane 72.Yet when transmitting torsion that gear pivot 59 born greater than the friction force between plane 72 and projection 74a and the 74b, plane 72 and projection 74a and 74b just can produce relative motion.In other words, second ring set 65 can rotate and projection 74c and 74d clamping planes 72, and second ring set 65 discharges torsion to avoid that motor is caused excessive load when rotating.
First free-wheel clutch 62 of the present invention and second free-wheel clutch 64 are configured to parallel to each other, and the working in coordination around direction of free- wheel clutch 62 and 64, make motor in output during in contrast to the torsion of paper feed direction, this is grabbed paper roller 42 and framework 22 and can be lifted simultaneously, and motor needn't continue to rotate also and can will grab paper roller 42 and framework 22 remains on the state of lifting.Therefore the disclosed mechanism for picking of the present invention has the effect that consumes smaller power.
Secondly, first free-wheel clutch 62 and second free-wheel clutch 64 are configured to configuration parallel to each other and all are positioned at framework 22 inboards, thus can not change the position of other assembly of document feeder in-to-in, so the present invention has and does not take up room and the effect of simple and convenient assembly.
More than be preferred embodiment of the present invention and design graphic, these preferred embodiments and to design graphic only be casehistory, be not to be used to limit interest field of the present invention, allly implement, all do not break away from category of the present invention and belong to applicant's interest field with the technological means of equalization or by the interest field that following claim content is contained.
The primary clustering symbol description
10 ADFs 12 are put paper box
14 paper, 16 paper-feeding channels
20 mechanism for picking
22 frameworks 24,26 wall sections
32 combers, 34 power transmission shafts
42 grab paper roller 44 grabs the paper roller rotating shaft
52 gear trains, 54 comber gears
56 grab paper roller gear 58 transmits gear
59 transmit gear pivot 62 first one-way clutch
63 first ring sets, 64 second free-wheel clutchs
65 second ring sets, 72 planes
74a, 74b, 74c, 74d projection.
Claims (16)
1. a mechanism for picking paper sheet is characterized in that, comprises:
Transmission shaft provides the torsion of paper feed direction and opposite paper feed direction;
Comber is arranged on the described transmission shaft;
Grab paper roller, be arranged on rotationally on the described paper feed direction;
Gear cluster comprises the comber gear that is arranged on the described transmission shaft, is arranged on described grabbing and grabs the paper roller gear on the paper roller, and be arranged on and transmit on the gear pivot and mesh described comber gear and described transmission gear of grabbing the paper roller gear respectively;
First free-wheel clutch is set on the described transmission shaft; And
Second free-wheel clutch is set on the described transmission gear pivot and parallel with described first free-wheel clutch;
Wherein, described comber rotates towards opposite described paper feed direction, described first free-wheel clutch unclasps and described second free-wheel clutch is tightly received, and described transmission gear becomes the planetary wheel of described comber gear, so that the described paper roller of grabbing is synchronously lifted.
2. mechanism for picking paper sheet as claimed in claim 1, it is characterized in that, also comprise framework, described comber and the described paper roller of grabbing are arranged in the described framework, described gear cluster is equipped on described framework surface, and described first free-wheel clutch and described second free-wheel clutch are arranged in the described framework parallel to each other.
3. mechanism for picking paper sheet as claimed in claim 1 is characterized in that, also comprises first ring set, and described transmission shaft is arranged in described first ring set, and described first ring set, one end is in abutting connection with described comber, and the other end is arranged in described first free-wheel clutch.
4. mechanism for picking paper sheet as claimed in claim 1 is characterized in that, also comprises second ring set, and described transmission gear is arranged in described second ring set, and an end of described second ring set is arranged in described second free-wheel clutch.
5. mechanism for picking paper sheet as claimed in claim 4 is characterized in that, described comber rotates towards opposite described paper feed direction, and described second free-wheel clutch tightly closes on described second ring set.
6. mechanism for picking paper sheet as claimed in claim 5, it is characterized in that, the tight receipts of described second free-wheel clutch makes described transmission gear pivot bear torsion, when described torsion greater than the friction force between described transmission gear pivot and described second ring set, described second ring set and described transmission gear pivot produce relative motion.
7. mechanism for picking paper sheet as claimed in claim 4, it is characterized in that, described transmission gear pivot surface form parallel shafts to the plane, the other end of described second ring set forms the described plane of a plurality of projection clampings, make described second ring set in conjunction with described transmission gear pivot, and described second ring set and described transmission gear pivot can produce relative motion.
8. mechanism for picking paper sheet as claimed in claim 7 is characterized in that, the torsion that described transmission gear pivot bears produces relative motion greater than the friction force between described projection and the described plane between then described second ring set and the described transmission gear pivot.
9. a paper-advance unit is characterized in that, comprises:
Paper-feeding channel; And
Mechanism for picking paper sheet, in order to the paper feeding on the paper box to the described paper-feeding channel, described mechanism for picking paper sheet comprises
Transmission shaft provides the torsion of paper feed direction and opposite paper feed direction;
Comber is arranged on the described transmission shaft;
Grab paper roller, be arranged on rotationally on the described paper feed direction;
Gear cluster comprises the comber gear that is arranged on the described transmission shaft, is arranged on described grabbing and grabs the paper roller gear on the paper roller, and be arranged on and transmit on the gear pivot and mesh described comber gear and described transmission gear of grabbing the paper roller gear respectively;
First free-wheel clutch is sheathed on the described transmission shaft; And
Second free-wheel clutch is set on the described transmission gear pivot and parallel described first free-wheel clutch;
Wherein, described comber rotates towards opposite described paper feed direction, described first free-wheel clutch unclasps and described second free-wheel clutch is tightly received, and described transmission gear becomes the planetary wheel of described comber gear, so that the described paper roller of grabbing is synchronously lifted.
10. paper-advance unit as claimed in claim 9, it is characterized in that, also comprise framework, described comber and the described paper roller of grabbing are arranged in the described framework, described gear cluster is equipped on described framework surface, and described first free-wheel clutch and described second free-wheel clutch are arranged in the described framework parallel to each other.
11. paper-advance unit as claimed in claim 9 is characterized in that, also comprises first ring set and is sheathed on the described transmission shaft, described first ring set, one end is in abutting connection with described comber, and the other end is arranged in described first free-wheel clutch.
12. paper-advance unit as claimed in claim 9 is characterized in that, also comprises second ring set and is sheathed on the described transmission gear pivot, an end of described second ring set is arranged in described second free-wheel clutch.
13. paper-advance unit as claimed in claim 12 is characterized in that, described comber rotates towards opposite described paper feed direction, and described second free-wheel clutch tightly closes on described second ring set.
14. paper-advance unit as claimed in claim 13, it is characterized in that, the tight receipts of described second free-wheel clutch makes described transmission gear pivot bear torsion, when described torsion greater than the friction force between described transmission gear pivot and described second ring set, described second ring set and described transmission gear pivot produce relative motion.
15. paper-advance unit as claimed in claim 12, it is characterized in that, described transmission gear pivot surface form parallel shafts to the plane, the other end of described second ring set forms the described plane of a plurality of projection clampings, make described second ring set in conjunction with described transmission gear pivot, and described second ring set and described transmission gear pivot can produce relative motion.
16. paper-advance unit as claimed in claim 15 is characterized in that, the torsion that described transmission gear pivot bears produces relative motion greater than the friction force between described projection and the described plane between then described second ring set and the described transmission gear pivot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100452687A CN101372290B (en) | 2007-08-24 | 2007-08-24 | Mechanism for picking paper sheet and paper feed device using the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2007100452687A CN101372290B (en) | 2007-08-24 | 2007-08-24 | Mechanism for picking paper sheet and paper feed device using the same |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101372290A CN101372290A (en) | 2009-02-25 |
| CN101372290B true CN101372290B (en) | 2010-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2007100452687A Active CN101372290B (en) | 2007-08-24 | 2007-08-24 | Mechanism for picking paper sheet and paper feed device using the same |
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| Country | Link |
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| CN (1) | CN101372290B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101844688B (en) * | 2009-03-27 | 2012-12-12 | 虹光精密工业（苏州）有限公司 | Automatic paper feeding device with clutch |
| CN101891072B (en) * | 2009-05-22 | 2012-11-28 | 虹光精密工业（苏州）有限公司 | Paper feed device with function of retaining paper and scanning device using same |
| CN102040109B (en) * | 2009-10-16 | 2012-11-28 | 虹光精密工业（苏州）有限公司 | Paper feed device of wheel gear assembly with mountable spindle position |
| CN106315314B (en) * | 2015-07-03 | 2018-07-06 | 山东新北洋信息技术股份有限公司 | A kind of paper distributing mechanism and the laminated medium processing unit using the paper distributing mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053423C (en) * | 1993-12-09 | 2000-06-14 | 村田机械株式会社 | Document paper supplying device |
| JP2000177861A (en) * | 1998-12-09 | 2000-06-27 | Ricoh Co Ltd | Automatic document feeder |
| US6390463B1 (en) * | 1999-08-27 | 2002-05-21 | Brother Kogyo Kabushiki Kaisha | Paper feeder |
| CN2505459Y (en) * | 2001-11-15 | 2002-08-14 | 力捷电脑股份有限公司 | Paper taking out mechanism |
| JP2006176311A (en) * | 2004-12-24 | 2006-07-06 | Asmo Co Ltd | Paper feeder and driving actuator |
| CN201102825Y (en) * | 2007-08-24 | 2008-08-20 | 虹光精密工业（苏州）有限公司 | Paper picking mechanism and paper feeding device using the same |
-
2007
- 2007-08-24 CN CN2007100452687A patent/CN101372290B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1053423C (en) * | 1993-12-09 | 2000-06-14 | 村田机械株式会社 | Document paper supplying device |
| JP2000177861A (en) * | 1998-12-09 | 2000-06-27 | Ricoh Co Ltd | Automatic document feeder |
| US6390463B1 (en) * | 1999-08-27 | 2002-05-21 | Brother Kogyo Kabushiki Kaisha | Paper feeder |
| CN2505459Y (en) * | 2001-11-15 | 2002-08-14 | 力捷电脑股份有限公司 | Paper taking out mechanism |
| JP2006176311A (en) * | 2004-12-24 | 2006-07-06 | Asmo Co Ltd | Paper feeder and driving actuator |
| CN201102825Y (en) * | 2007-08-24 | 2008-08-20 | 虹光精密工业（苏州）有限公司 | Paper picking mechanism and paper feeding device using the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101372290A (en) | 2009-02-25 |
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