US20060017213A1 - Paper feeding device - Google Patents

Paper feeding device Download PDF

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Publication number
US20060017213A1
US20060017213A1 US11/185,404 US18540405A US2006017213A1 US 20060017213 A1 US20060017213 A1 US 20060017213A1 US 18540405 A US18540405 A US 18540405A US 2006017213 A1 US2006017213 A1 US 2006017213A1
Authority
US
United States
Prior art keywords
pickup roller
rotational axis
paper feeding
feeding device
flange
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US11/185,404
Other languages
English (en)
Inventor
Takashi Maeda
Yoshihiko Imura
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Funai Electric Co Ltd
Original Assignee
Funai Electric Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Funai Electric Co Ltd filed Critical Funai Electric Co Ltd
Assigned to FUNAI ELECTRIC CO., LTD. reassignment FUNAI ELECTRIC CO., LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: IMURA, YOSHIHIKO, MAEDA, TAKASHI
Publication of US20060017213A1 publication Critical patent/US20060017213A1/en
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/02—Separating articles from piles using friction forces between articles and separator
    • B65H3/06—Rollers or like rotary separators
    • B65H3/0638—Construction of the rollers or like rotary separators
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2402/00—Constructional details of the handling apparatus
    • B65H2402/50—Machine elements
    • B65H2402/51—Joints, e.g. riveted or magnetic joints
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/11—Details of cross-section or profile
    • B65H2404/111—Details of cross-section or profile shape
    • B65H2404/1113—C-shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/13—Details of longitudinal profile
    • B65H2404/134—Axle
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2601/00—Problem to be solved or advantage achieved
    • B65H2601/30—Facilitating or easing
    • B65H2601/32—Facilitating or easing entities relating to handling machine
    • B65H2601/324—Removability or inter-changeability of machine parts, e.g. for maintenance

Definitions

  • the present invention relates to a paper feeding device with a pickup roller that feeds a sheet of paper in a printer or a copying machine.
  • a pickup roller In a printer or a copying machine, a pickup roller is used to feed a sheet of paper.
  • the surface thereof is formed of an elastic and anti-slip material such as rubber.
  • the pickup roller is rotated to feed a sheet of paper.
  • the surface of the pickup roller formed of rubber and the like gradually wears by the repeated operation of paper feeding. Therefore, the pickup roller needs to be replaced regularly.
  • the pickup roller is rotary driven by a rotational axis. If the rotational axis is provided so as to penetrate the pickup roller, the rotational axis itself needs to be detached when the pickup roller is to be replaced. An end of the rotational axis is provided with means for transmitting driving force of a gear or a pulley to drive the rotational axis. Accordingly, it is not easy to detach the rotational axis that retains the pickup roller.
  • a pair of collars 72 is provided that is penetrated by a rotational axis 71 .
  • the surface of collars 72 facing a pickup roller body 74 is provided with a rectangular axial member 73 and the corresponding part of pickup roller body 74 is provided with a rectangular concave portion 75 .
  • one of the pair of collars 72 is shifted axially and the pickup roller body is also shifted in the same direction.
  • rectangular axial member 73 is disengaged from concave portion 75 so that fixation of pickup roller body 74 is released.
  • pickup roller body 74 can be replaced without detaching rotational axis 71 .
  • rotational axis 81 is provided with a pair of rectangular holes 85 and a pair of round holes 86 .
  • Pickup roller 82 is provided with a pair of engaging pieces 83 and a pair of positioning pins 84 at respective corresponding positions.
  • pickup roller 82 When pickup roller 82 is to be mounted, positioning pin 84 of pickup roller 82 is inserted into round hole 86 to position pickup roller 82 . By the insertion, engaging piece 83 engages with rotational axis 81 so that pickup roller 82 is fixed to rotational axis 81 . For a removing operation, pickup roller 82 can be removed by pulling pickup roller 82 to pull out positioning pin 84 while releasing engagement of pair of engaging pieces 83 .
  • An object of the present invention is to provide a paper feeding device in which detachment is easy when a pickup roller is to be replaced and that does not increase the number of parts and manufacturing processes.
  • a paper feeding device includes a rotational axis with a groove shaped cross section having a web extending in the longitudinal direction and a flange provided at opposite sides thereof, and a pickup roller having a concave groove to receive the rotational axis.
  • An end of the pickup roller is provided with a pair of engaging pieces that engages with a flange end portion of the rotational axis respectively, and the other end of the pickup roller is provided with a hook that is inserted into an insertion hole provided on the web of the rotational axis.
  • the hook extends outwardly from the body of the pickup roller and forms a stepped shape having an abutting surface that abuts against the inner surface of the web.
  • a notch for positioning is provided at a site in the flange end portion where the engaging piece engages.
  • the engaging piece of the pickup roller is formed of resin and an end of the engaging piece is made to engage with the flange end portion by elasticity of resin.
  • FIG. 1 is a perspective view from one end of a pickup roller in an embodiment according to the present invention.
  • FIG. 2 is a perspective view from the other end of the pickup roller in an embodiment according to the present invention.
  • FIG. 3 is a front view of a rotational axis in an embodiment according to the present invention.
  • FIG. 4 is a front view showing a process in which the pickup roller is attached to the rotational axis.
  • FIG. 5 is a front view showing a state in which the pickup roller has been attached to the rotational axis.
  • FIG. 6 shows the pickup roller in a used state in an embodiment according to the present invention.
  • FIG. 7 is a perspective view of a mounting structure of the pickup roller in the prior art.
  • FIG. 8 is a perspective view of the mounting structure of the pickup roller in the prior art.
  • FIGS. 1-6 A paper feeding device in one embodiment of the present invention now will be described referring to FIGS. 1-6 .
  • a paper feeding device of the present embodiment includes a rotational axis 41 with a groove shaped cross section, and having a web 41 w extending in the longitudinal direction and a flange 41 f provided at opposite sides thereof.
  • the paper feeding device further includes a pickup roller 1 having a concave groove 25 to receive rotational axis 41 .
  • One end of pickup roller 1 is provided with a pair of engaging pieces 21 that engages with an end portion of flange 41 f of pickup roller 1 respectively, and the other end of pickup roller 1 is provided with a hook 15 that is inserted into an insertion hole 43 provided on web 41 w of rotational axis 41 .
  • Hook 15 extends outwardly from a pickup roller body 11 and has a stepped shape having an abutting surface 15 a that abuts against the inner surface of web 41 w.
  • a notch 45 for positioning is provided at a site in an end portion of flange 41 f where engaging piece 21 engages.
  • Engaging piece 21 of pickup roller 1 is formed of resin so that an end of engaging piece 21 is made to engage with notch 45 of the end portion of flange 41 f by elasticity of resin.
  • Pickup roller 1 is formed of a body 11 of pickup roller of synthetic resin, and a non-slip material 31 of rubber provided on the perimeter thereof.
  • Non-slip material 31 occupies about two-thirds of the area of the perimeter surface of pickup roller body 11 .
  • non-slip material 31 is pressed against the surface of a sheet 53 of paper and sends out sheet 53 in the paper feeding direction when pickup roller 1 is rotated.
  • a material that has a certain degree of elasticity as well as frictional force with respect to a sheet of paper is selected.
  • Pickup roller body 11 serves to retain non-slip material 31 and is fixed to rotational axis 41 .
  • Pickup roller body 11 is provided with concave groove 25 extending to the center of pickup roller body 11 .
  • Concave groove 25 also extends in the longitudinal direction (the axial direction) of pickup roller body 11 and is exposed at the opposite sides thereof as shown in FIGS. 1 and 2 .
  • One end of pickup roller body 11 is provided with pair of engaging pieces 21 .
  • engaging pieces 21 are formed as a cantilever that are pendent downwardly from opposite sides of a base portion 22 protruding horizontally from an end surface of pickup roller body 11 .
  • the end portion of engaging piece 21 has a crochet hook shape and the end portion engages with the end portion of flange 41 f of rotational axis 41 from the outside.
  • Pickup roller body 11 and engaging piece 21 are formed of synthetic resin so that the end portion of engaging piece 21 can be made to engage with flange 41 f of rotational axis 41 by elasticity of resin.
  • pickup roller body 11 The other end of pickup roller body 11 is provided with hook 15 , as shown in FIG. 2 .
  • Hook 15 is formed to have a stepped shape protruding outwardly from pickup roller body 11 .
  • the upper surface of an end portion of hook 15 forms an abutting surface 15 a that abuts against the inner surface of web 41 w of rotational axis 41 .
  • Rotational axis 41 shown in FIG. 3 is made of metal and includes web 41 w and flange 41 f provided at opposite sides thereof and has a groove shaped cross section.
  • a paper feeding cam 47 formed of synthetic resin is provided at opposite ends of rotational axis 41 .
  • Near the center of rotational axis 41 is provided an insertion hole 43 into which hook 15 of pickup roller body 11 is inserted.
  • Insertion hole 43 is formed as a rectangular hole provided on web 41 w. Further, at a position in the end of flange 41 f away from insertion hole 43 by a predetermined distance is provided a notch 45 where engaging piece 21 of pickup roller 1 engages to determine an engaging position of engaging piece 21 .
  • pickup roller 1 can be mounted very easily.
  • pickup roller 1 of the present embodiment hook 15 is latched into rotational axis 41 and then engaging piece 21 of the opposite side is engaged so that the positioning is completed by just inserting hook 15 into insertion hole 43 .
  • pickup roller 1 can be mounted to rotational axis 41 very easily. This effect is evident in the process where pickup roller 1 is replaced as well as in the process where pickup roller 1 is mounted to rotational axis 41 in manufacturing a printer and the like.
  • rotational axis 41 is provided with notch 45 where engaging piece 21 engages so that pickup roller 1 can be positioned more securely. More specifically, as shown in FIG. 4 , in pickup roller 1 of the present embodiment, hook 15 is inserted into insertion hole 43 from an oblique direction. Accordingly, insertion hole 43 needs to have some play. The end portion of engaging piece 21 of pickup roller 1 and notch 45 are formed to exactly fit together so that backlash of pickup roller 1 after installing can be eliminated. It is to be noted that notch 45 may be omitted and engaging piece 21 may directly engage with the end of flange 41 f of rotational axis 41 if backlash of pickup roller 1 after installing is not considered as a serious problem.
  • pickup roller 1 When pickup roller 1 is to be removed, first the side of engaging piece 21 is pulled upwardly. At this stage, the engagement can be easily released since engaging piece 21 engages through elasticity of resin. Then, hook 15 is pulled out from insertion hole 43 to complete the removal. Thus, pickup roller 1 can be removed very easily, too.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sheets, Magazines, And Separation Thereof (AREA)
US11/185,404 2004-07-22 2005-07-20 Paper feeding device Abandoned US20060017213A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2004214359A JP4270055B2 (ja) 2004-07-22 2004-07-22 給紙装置
JP2004-214359 2004-07-22

Publications (1)

Publication Number Publication Date
US20060017213A1 true US20060017213A1 (en) 2006-01-26

Family

ID=35656313

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/185,404 Abandoned US20060017213A1 (en) 2004-07-22 2005-07-20 Paper feeding device

Country Status (2)

Country Link
US (1) US20060017213A1 (ja)
JP (1) JP4270055B2 (ja)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060033258A1 (en) * 2004-08-09 2006-02-16 Kwang-Taek Lim Paper picking-up unit and image forming apparatus having the same
CN102408020A (zh) * 2010-09-22 2012-04-11 富士施乐株式会社 记录介质传送装置和图像形成装置
CN104803215A (zh) * 2014-01-27 2015-07-29 柯尼卡美能达株式会社 辊部件、片材输送装置以及图像形成装置
US10221884B2 (en) * 2014-12-24 2019-03-05 Canon Kabushiki Kaisha Rotating shaft, roller, sheet conveyance device, and image forming apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4662170B2 (ja) * 2006-10-02 2011-03-30 富士ゼロックス株式会社 シート搬送装置、画像形成装置、及びシート供給装置
JP5173933B2 (ja) * 2009-05-22 2013-04-03 日立オムロンターミナルソリューションズ株式会社 カード処理装置

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060033258A1 (en) * 2004-08-09 2006-02-16 Kwang-Taek Lim Paper picking-up unit and image forming apparatus having the same
US7699306B2 (en) * 2004-08-09 2010-04-20 Samsung Electronics Co., Ltd. Paper picking-up unit and image forming apparatus having the same
CN102408020A (zh) * 2010-09-22 2012-04-11 富士施乐株式会社 记录介质传送装置和图像形成装置
US8376351B2 (en) 2010-09-22 2013-02-19 Fuji Xerox Co., Ltd. Recording medium transporting device and image forming apparatus
CN104803215A (zh) * 2014-01-27 2015-07-29 柯尼卡美能达株式会社 辊部件、片材输送装置以及图像形成装置
US20150210489A1 (en) * 2014-01-27 2015-07-30 Konica Minolta, Inc. Roller member, sheet feeder and image forming apparatus
US9162835B2 (en) * 2014-01-27 2015-10-20 Konica Minolta, Inc. Roller member, sheet feeder and image forming apparatus
US10221884B2 (en) * 2014-12-24 2019-03-05 Canon Kabushiki Kaisha Rotating shaft, roller, sheet conveyance device, and image forming apparatus

Also Published As

Publication number Publication date
JP4270055B2 (ja) 2009-05-27
JP2006036378A (ja) 2006-02-09

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Legal Events

Date Code Title Description
AS Assignment

Owner name: FUNAI ELECTRIC CO., LTD., JAPAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:MAEDA, TAKASHI;IMURA, YOSHIHIKO;REEL/FRAME:016802/0338

Effective date: 20050714

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION