CN101190757A - Paper-feeding mechanism - Google Patents
Paper-feeding mechanism Download PDFInfo
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- CN101190757A CN101190757A CNA2006101448449A CN200610144844A CN101190757A CN 101190757 A CN101190757 A CN 101190757A CN A2006101448449 A CNA2006101448449 A CN A2006101448449A CN 200610144844 A CN200610144844 A CN 200610144844A CN 101190757 A CN101190757 A CN 101190757A
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- gear
- paper feed
- angle
- feed mechanism
- stop part
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Abstract
A paper feed mechanism is suitable to be used in an MFP and comprises a shell, a retaining device, a rocker arm gear mechanism and a rotating object. The retaining device, the rotating object and the rocker arm gear mechanism are pivotally arranged in the shell; wherein, the rocker arm gear mechanism is provided with a first gear row and a second gear row. The rotating object is provided with a cam and an edentulous gear; wherein, the edentulous gear is fixedly connected with the cam which is contacted with the retaining device. When the rocker arm gear mechanism is in a first place, the first gear row is engaged with the edentulous gear and drives the cam to rotate in the first direction to drive the retaining device to rotate to a first angle; when the rocker arm gear mechanism is in a second place, the second gear row is engaged with the edentulous gear and drives the cam to rotate in the first direction to drive the retaining device to rotate to a second angle.
Description
Technical field
The present invention relates to a kind of paper feed mechanism, particularly a kind of paper feed mechanism that prevents multi-paper feed (Multi-Feed).
Background technology
At first consult Fig. 1, existing paper feed mechanism 10 main by paper placing slot 12, layman 14, rotating shaft 16, get paper arm 18 and be arranged at the pickup roller 19 of getting paper arm 18 ends and formed.As shown in the figure, paper placing slot 12 both sides are fixed at aforementioned rotating shaft 16 two ends, get 18 on paper arm and rotating shaft 16 pivot joints, and in addition, layman 14 is fixed in paper placing slot 12 bottoms.
Generally speaking, when the paper sheet thickness in the paper placing slot 12 changes, aforementioned get paper arm 18 can be around the shaft 16 rotations, make pickup roller 19 be pressed on the upper surface of paper sustainably, drive paper thus and advance.In particular, when pickup roller 19 drive paper advanced, the paper lower edge was subjected to stopping of layman 14 and produces warpage (buckling), therefore can reach the purpose of individual paper feed.Yet, in view of the angle between layman 14 and paper is generally the obtuse angle, therefore when placing paper, may make paper cross layman 14, and then produce the phenomenon of multi-paper feed (Multi-Feed) owing to strength is excessive.
Summary of the invention
The invention provides a kind of paper feed mechanism, be applicable to the affairs machine, it mainly comprises housing, stop part, rocker gear mechanism and tumbler.Above-mentioned housing has paper placing slot, is used for ccontaining at least one recordable media.Above-mentioned stop part is hubbed on the housing, and wherein stop part moves between first angle and second angle with respect to aforementioned recordable media.Above-mentioned rocker gear mechanism is hubbed at housing versatilely, has driving gear, first gear row and second gear row, and wherein first, second gear row lay respectively at the opposition side of driving gear and mesh with driving gear.The such rotation part is hubbed on the housing, has cam and hypodontia gear, and above-mentioned hypodontia gear and cam are affixed, and cam contacts with stop part.In particular, when rocker gear mechanism was positioned at primary importance, first gear row rotated towards first direction to order about cam with the hypodontia gear mesh, and then the drive stop part rotates to aforesaid first angle; When rocker gear mechanism was positioned at the second place, second gear row rotated towards aforementioned first direction to order about cam with the hypodontia gear mesh, and then the drive stop part rotates to aforesaid second angle.
In a preferred embodiment, aforementioned hypodontia gear has toothless portion), and when rocker gear mechanism was positioned at primary importance and first gear row and moves to above-mentioned toothless portion), rocker gear mechanism broke away from tumbler, makes stop part maintain first angle.
In a preferred embodiment, when aforementioned rocker gear mechanism was positioned at the second place and second gear row and moves to toothless portion), rocker gear mechanism broke away from tumbler, makes stop part maintain second angle.
In a preferred embodiment, aforementioned stop part has pivot and stop section, and wherein pivot is articulated in housing, and the stop section contacts with cam.
In a preferred embodiment, aforementioned stop section has projection, and above-mentioned projection contacts with cam.
In a preferred embodiment, aforementioned projection is an elastic component.
In a preferred embodiment, aforementioned paper feed mechanism further comprises pickup roller, and above-mentioned pickup roller connects housing, and when stop part was positioned at aforementioned second angle, pickup roller drove aforementioned recordable media and advances towards the paper feed direction.
In a preferred embodiment, when aforementioned stop part rotated to first angle, stop part stopped that recordable media moves towards aforementioned paper feed direction.
In a preferred embodiment, aforementioned second angle is greater than first angle.
In a preferred embodiment, aforementioned first gear row have odd number first gear, and second gear row have even number second gear.
In a preferred embodiment, aforementioned rocker gear mechanism further comprises rocking arm, and aforementioned driving gear and first, second gear row all are arranged on the rocking arm.
In a preferred embodiment, aforementioned rocker gear mechanism drives by driving gear and switches between first, second position.
In a preferred embodiment, aforementioned hypodontia gear and cam are one of the forming.
Description of drawings
Fig. 1 represents the scheme drawing of existing paper feed mechanism;
Fig. 2 represents the scheme drawing of paper feed mechanism of the present invention;
Fig. 3 represents the scheme drawing of stop part among the present invention;
Fig. 4 represents the scheme drawing of first gear and hypodontia gear mesh;
Fig. 5 represents that first gear movement breaks away from the scheme drawing of tumbler to toothless portion);
Fig. 6 represents the scheme drawing of second gear and hypodontia gear mesh; And
Fig. 7 represents that second gear movement breaks away from the scheme drawing of tumbler to toothless portion).
The specific embodiment
Consult Fig. 2, described figure represents the scheme drawing of paper feed mechanism of the present invention.Above-mentioned paper feed mechanism can be arranged in affairs machine or the type printer, and it mainly comprises housing H, stop part 51, tumbler 61, rocker gear mechanism 71 and pickup roller (not shown).As shown in Figure 2, aforementioned housing H central authorities are provided with paper placing slot 41 and are used to place pile S or other recordable media, the paper S1 that can drive the pile S the superiors by pickup roller (pickup roller 19 for example shown in Figure 1) advances (shown in the direction of arrow) towards paper feed direction A, to finish the operation of paper feed.In particular, stop part 51 in the present embodiment, tumbler 61 and rocker gear mechanism 71 all are hubbed on the housing H, and aforementioned stop part 51 changes angle movably and be used to stop or guide paper S1 and advance, and take place with the situation of avoiding overlapping paper feed.
Then consult Fig. 3, aforementioned stop part 51 mainly comprises pivot 51a, stop section 51b, and wherein pivot 51a and housing H articulate, and 51b below in stop section is provided with projection 51c.Consult Fig. 4 again, such rotation part 61 mainly comprises cam 61a and hypodontia gear 61b, and wherein hypodontia gear 61b and cam 61a are affixed, and the center shaft C of the moving part 61 that can together rotate rotation.In particular, the projection 51c of aforementioned stop part 51 then slidably is connected to cam 61a.In a preferred embodiment, aforementioned hypodontia gear 61b and cam 61a are one of the forming, and aforementioned projection 51c for example is an elastic component.
Rocker gear mechanism 71 as shown in Figure 4 mainly comprises mobilizable rocking arm 72, driving gear 73, the first gear row 74 and the second gear row 75, above-mentioned driving gear 73 all is arranged on the rocking arm 72 with first, second gear row 74,75, and wherein first, second gear row 74,75 lay respectively at the opposition side of driving gear 73 and mesh with driving gear 73.In the present embodiment, the aforementioned first gear row 74 only have 75 of first gear, 741, the second gear row and have two second gears 751; Yet aforementioned first, second gear row 74,75 also can have odd number (for example one, three or five) first gear 741 and even number (for example two, four or six) second gear 751 respectively according to the different designs demand.
When paper feed mechanism of the present invention is state shown in 4 figure, has first angle [alpha] between aforementioned stop section 51b and the pile S, can effectively prevent pile S paper placing slot 41 in along paper feed direction A landing by stop section 51b this moment, and then can avoid the situation of overlapping paper feed to take place.When needs carry out the paper feed operation, aforementioned rocker gear mechanism 71 at first moves to primary importance (as shown in Figure 4), hypodontia gear 61b engagement on first gear 741 that is positioned at rocker gear mechanism 71 ends this moment and the tumbler 61, and be rotated in a clockwise direction to drive cam 61 by driving gear 73 and rotate towards first direction A1 (clockwise direction).In particular, in cam 61 rotating process, can adjust the attitude of stop part 51 by its profile variations, and then make stop part 51 be changed to second angle beta (as shown in Figure 5) by first angle [alpha] shown in Figure 4, wherein second angle beta is greater than first angle [alpha].
Then consult Fig. 5, when stop part 51 rotates to second angle beta with respect to pile S, because first gear 741 moves to the toothless portion) 61b ' of hypodontia gear 61b and breaks away from tumbler 61, the 51 no longer motions in stop section this moment, and maintain aforementioned second angle beta between stop section 51b and the pile S, be beneficial to pickup roller the paper S1 of the paper pile S the superiors is carried out the operation of individual paper feed.
Then, after finishing the paper feed program, aforementioned driving gear 73 reverses in the counterclockwise direction, this moment, whole rocker gear mechanism 71 was along with driving gear 73 turns to the second place (as shown in Figure 6) in the counterclockwise direction, and then made hypodontia gear 61b engagement on second gear 751 and the tumbler 61 of the second gear row, 75 ends.In the present embodiment, because the second gear row 75 have even number second gear 751, therefore when driving gear 73 continues to rotate in the counterclockwise direction, still can drive cams 61 and rotate along first direction A1 (clockwise direction) unceasingly by the second gear row 75, up to second gear 751 move to hypodontia gear 61b toothless portion) 61b ' and till the disengaging tumbler 61 (as shown in Figure 7).
In Fig. 7, the angle of aforementioned stop section 51 and pile S returns back to first angle [alpha] as shown in Figure 4, and this moment, stop section 51 can prevent effectively that pile S in the paper placing slot 41 is along aforementioned paper feed direction A landing.But, when needs carry out the paper feed action once more, driving gear 73 is rotated in a clockwise direction, rocker gear mechanism 71 drives and is rotated in a clockwise direction to primary importance (state as shown in Figure 4) by the second place (state as shown in Figure 7) owing to being subjected to driving gear 73 at this moment, and then makes the hypodontia gear 61b engagement on win gear 741 and the tumbler 61.
In sum, the present invention is by being provided with hypodontia gear 61b and cam 61a on tumbler 61, odd number first gear 741 and even number second gear 741 are set respectively in driving gear 73 both sides simultaneously, wherein when rocker gear mechanism 71 is positioned at primary importance and driving gear 73 and is rotated in a clockwise direction (as shown in Figure 4), hypodontia gear 61b and cam 61a can rotate along first direction (clockwise direction), and then can drive stop section 51b rotation and make formation first angle [alpha] between paper stopping part 51b and the pile S.On the contrary, when rocker gear mechanism 71 is positioned at the second place and driving gear 73 left-hand revolutions (as shown in Figure 6), hypodontia gear 61b and cam 61a can rotate along first direction (clockwise direction), and then can drive stop section 51b rotation and make formation second angle beta between stop section 51b and the pile S.In particular, when moving to the toothless portion) 61b ' of aforementioned hypodontia gear 61b, rocker gear mechanism 71 can automatically break away from tumbler 61, and then make and to maintain aforesaid first angle [alpha] or second angle beta between stop section 51b and the pile S, so the paper S 1 that can stop or guide the pile S the superiors by the state of control stop section 51b advances, and can avoid the situation of overlapping paper feed to take place simultaneously.
Though the present invention discloses as above with preferred embodiment; but described embodiment is used to limit the present invention; those skilled in the art; without departing from the spirit and scope of the present invention; should carry out the change and the modification of part, so protection scope of the present invention should be as the criterion according to appended claims institute restricted portion.
The primary clustering symbol description
12～paper placing slot, 14～layman
16～rotating shaft 18～get paper arm
19～pickup roller, 41～paper placing slot
51～stop part 51a～pivot
51b～stop section 51c～projection
61～tumbler 61a～cam
61b～hypodontia gear 61b '～toothless portion)
71～rocker gear mechanism, 72～rocking arm
73～driving gear, 74～the first gears row
741～the first gears, 75～the second gears row
751～the second gear A～paper feed direction
A1～first direction C～center shaft
H～housing S～pile
S1～paper α～first angle
β～second angle.
Claims (13)
1. a paper feed mechanism is applicable to the affairs machine, comprising:
Housing has paper placing slot, is used for ccontaining at least one recordable media;
Stop part is hubbed on the described housing, and wherein said stop part moves between first angle and second angle with respect to described recordable media;
Rocker gear mechanism is hubbed at described housing versatilely, has driving gear, first gear row and second gear row, and wherein said first, second gear row lay respectively at the opposition side of described driving gear and mesh with described driving gear; And
Tumbler is hubbed on the described housing, has cam and hypodontia gear, and described hypodontia gear and described cam are affixed, and described cam contacts with described stop part;
Wherein, when described rocker gear mechanism was positioned at primary importance, described first gear row rotated towards first direction to order about described cam with described hypodontia gear mesh, and then drove described stop part and rotate to described first angle; When described rocker gear mechanism was positioned at the second place, described second gear row rotated towards described first direction to order about described cam with described hypodontia gear mesh, and then drove described stop part and rotate to described second angle.
2. paper feed mechanism according to claim 1, wherein said hypodontia gear has toothless portion), when described rocker gear mechanism is positioned at described primary importance and described first gear row and moves to described toothless portion), described rocker gear mechanism breaks away from described tumbler, makes described stop part maintain described first angle.
3. paper feed mechanism according to claim 1, wherein said hypodontia gear has toothless portion), when described rocker gear mechanism is positioned at the described second place and described second gear row and moves to described toothless portion), described rocker gear mechanism breaks away from described tumbler, makes described stop part maintain described second angle.
4. paper feed mechanism according to claim 1, wherein said stop part has pivot and stop section, and described pivot is articulated in described housing, and described stop section contacts with described cam.
5. paper feed mechanism according to claim 4, wherein said stop section has projection, and described projection contacts with described cam.
6. paper feed mechanism according to claim 5, wherein said projection are elastic component.
7. paper feed mechanism according to claim 1, wherein said paper feed mechanism further comprises pickup roller, described pickup roller connects described housing, and when described stop part was positioned at described second angle, described pickup roller drove described recordable media and advances towards the paper feed direction.
8. paper feed mechanism according to claim 7, wherein when described stop part rotated to described first angle, described stop part stopped that described recordable media moves towards described paper feed direction.
9. paper feed mechanism according to claim 7, wherein said second angle is greater than described first angle.
10. paper feed mechanism according to claim 1, wherein said first gear row have odd number first gear, and described second gear row have even number second gear.
11. paper feed mechanism according to claim 1, wherein said rocker gear mechanism further comprises rocking arm, and described driving gear and described first, second gear row all are arranged on the described rocking arm.
12. paper feed mechanism according to claim 1, wherein said rocker gear mechanism drives by described driving gear and switches between described first, second position.
13. paper feed mechanism according to claim 1, wherein said hypodontia gear and described cam are one of the forming.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101448449A CN101190757A (en) | 2006-11-23 | 2006-11-23 | Paper-feeding mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006101448449A CN101190757A (en) | 2006-11-23 | 2006-11-23 | Paper-feeding mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101190757A true CN101190757A (en) | 2008-06-04 |
Family
ID=39485983
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006101448449A Pending CN101190757A (en) | 2006-11-23 | 2006-11-23 | Paper-feeding mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101190757A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102234030A (en) * | 2010-05-05 | 2011-11-09 | 旭丽电子(广州)有限公司 | Paper fetching mechanism and paper fetching method thereof |
| CN102485621A (en) * | 2010-12-06 | 2012-06-06 | 致伸科技股份有限公司 | Paper blocking mechanism of automatic paper feeder |
| TWI424927B (en) * | 2011-03-16 | 2014-02-01 | Qisda Corp | Paper feeding mechanism and printing devcie using the same |
-
2006
- 2006-11-23 CN CNA2006101448449A patent/CN101190757A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102234030A (en) * | 2010-05-05 | 2011-11-09 | 旭丽电子(广州)有限公司 | Paper fetching mechanism and paper fetching method thereof |
| CN102234030B (en) * | 2010-05-05 | 2014-07-02 | 光宝电子(广州)有限公司 | Paper fetching mechanism and paper fetching method |
| CN102485621A (en) * | 2010-12-06 | 2012-06-06 | 致伸科技股份有限公司 | Paper blocking mechanism of automatic paper feeder |
| CN102485621B (en) * | 2010-12-06 | 2014-09-03 | 致伸科技股份有限公司 | Paper blocking mechanism of automatic paper feeder |
| TWI424927B (en) * | 2011-03-16 | 2014-02-01 | Qisda Corp | Paper feeding mechanism and printing devcie using the same |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20080604 |