JP5124011B2 - Seat pickup module - Google Patents

Description

  The present invention relates to a sheet feeding device, and more particularly, to a sheet pickup module.

  In offices, office automation devices such as copiers, printers, and facsimile machines are frequently used. These OA devices have a sheet pickup mechanism that feeds paper one by one in order to perform subsequent operations.

  A conventional sheet pickup mechanism includes a pickup roller set and two sheet stoppers. The pickup roller set is pivotally attached to the inside of the cover plate of the OA device. When the sheet is picked up, the pickup roller set swings downward, presses the roller onto the sheet, and rotates the roller to feed the sheet forward. The paper stopper is used to hold and fix the front of the sheet under normal conditions. When picking up the sheet, the paper stopper is released from the fixed state, and the sheet is pushed forward by pushing the sheet forward.

  In the paper taking mechanism having the paper guard function of Patent Document 1, the contact block arranged on the paper taking roller set can prevent the paper guard component from moving, but when the paper taking roller set moves, A technique is disclosed in which the contact block moves away from the paper guard part along a path provided below the paper guard part, and the paper guard part is pushed by the sheet. Further, in the paper guard mechanism of Patent Document 2, a notch is provided on the paper guard component, and the bump on the paper collecting roller set is brought into contact with and fixed to the back surface of the paper guard component under a normal state. When picking up the paper, the bumper moves to the notch of the paper guard part after the paper collecting roller set is swung downward, so that the paper guard part can move freely.

  However, in Patent Document 1 and Patent Document 2, since the paper guard part is pressed by a specific part on the paper collecting roller set, it is necessary to separate this part from the paper guard part by a complicated structure.

Taiwan Utility Model Registration No.320,492 Taiwan Utility Model Registration No. 317,928

  An object of the present invention is to provide a sheet pickup module that can easily and accurately control a sheet stopper.

The sheet pickup module according to claim 1, wherein the sheet pickup module includes a sheet pickup roller set and at least one paper stopper, and the sheet pickup roller set and at least one paper stopper are separate from each other. The sheet pickup roller set and the sheet stopper are pivotally attached to a cover plate, the sheet pickup roller set includes a roller, the sheet stopper includes a sheet stopper member, a hook portion And a fixing member provided with a driven part, and the cover plate is provided with a hole so as to correspond to the hook part of the fixing member of the paper stopper, on the sheet pickup roller set. The drive unit is disposed on the seat Click up roller set, when the drive unit is moved to the first position adapted to press said driven portion, said being the hook portion is inserted in the fixing member in the hole of the front Stories cover plate fixing the sheet stopper, the sheet pickup roller set, when the drive unit is moved to the second position which is away from the said driven part, wherein the fixing member from the hole of the front Stories cover plate The sheet pickup roller set and the paper stopper can be individually controlled and swinged by separating the hook portion and freely rotating the paper stopper .

  It is preferable that the paper stopper member and the fixing member are constituted by two independent parts pivoted to each other.

  Preferably, the paper stopper member is pivotally attached to the cover plate, and the swinging direction of the paper stopper member is perpendicular to the swinging direction of the fixing member.

  Preferably, the paper stopper member has a pivot seat, the fixing member has a shaft, is pivotally attached to the pivot seat, and a spring is disposed on the shaft.

  Preferably, the paper stopper member and the fixing member are integrally formed, and the fixing member has flexibility.

  Preferably, the paper stopper member is pivotally attached to the cover plate, and the swinging direction of the paper stopper member is perpendicular to the direction in which the fixing member is bent.

  It is preferable that the driving portion of the sheet pickup roller set has a contact surface, and the driven portion of the fixing member of the paper stopper has a contact surface.

  The contact surface provided on the driving unit of the sheet pickup roller set is preferably a slope or a curved surface.

  The contact surface provided on the driven portion of the paper stopper is preferably a slope or a curved surface.

  It is preferable that the hook portion and the driven portion are provided on the fixing member in a front-back relationship.

  The sheet pickup module of the present invention can control the paper stopper easily and accurately.

1 is a perspective view showing a sheet pickup module according to a first embodiment of the present invention. It is a perspective view which shows the paper stopper by 1st Embodiment of this invention. FIG. 3 is a cross-sectional view illustrating a state where the paper stopper according to the first embodiment of the present invention is fixed in a standby state. FIG. 3 is a cross-sectional view illustrating a state where the paper stopper according to the first embodiment of the present invention is fixed in a standby state. FIG. 5 is a cross-sectional view illustrating a state where a sheet stopper is released after the sheet pickup roller set according to the first embodiment of the present invention is rotated by a predetermined angle. FIG. 5 is a cross-sectional view illustrating a state where a sheet stopper is released after the sheet pickup roller set according to the first embodiment of the present invention has been rotated at a predetermined angle. FIG. 5 is a cross-sectional view illustrating a state where the sheet stopper according to the first embodiment of the present invention is pushed open and moved forward. It is a perspective view which shows the paper stopper by 2nd Embodiment of this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited thereby.

  A sheet pickup module according to an embodiment of the present invention is attached to a copying machine, a printer, a facsimile, or the like, and is used to feed sheets one by one into the apparatus. The following embodiment will be described using a copying machine.

  Please refer to FIG. As shown in FIG. 1, a sheet pickup module according to an embodiment of the present invention includes a sheet pickup mounted on a rib 16 (shown in FIGS. 3 to 7) provided inside a cover plate 14 of a copying machine. The roller set 10 and the two paper stoppers 12 are provided, and the sheet pickup roller set 10 and the two paper stoppers 12 are individually controlled to swing.

(First embodiment)
Please refer to FIG. As shown in FIG. 2, the paper stopper 12 according to the first embodiment of the present invention includes a paper stopper member 18 and a fixing member 20. The paper stopper member 18 is pivotally attached to the rib 16 of the cover plate 14 by a shaft 22 extending in the lateral direction. A pivot seat 24 is disposed above the shaft 22. A notch is provided at the center of the upper end of the pivot seat 24, and shaft holes 26 are provided on the wall surfaces on both sides of the notch. A shaft 28 attached in a shaft hole 26 on the pivot seat 24 of the paper stopper member 18 is disposed at the end of the fixing member 20. On the shaft 28 of the fixing member 20, a torsion spring 30 having one end in contact with the fixing member 20 and the other end in contact with the pivot seat 24 is fitted. A hook portion 32 is provided at the outer end of the fixing member 20, and a driven portion 34 is provided in a relationship between the hook portion 32 and the front and back. The driven part 34 is a bump, and a contact surface 36 is provided. The contact surface 36 is an inclined surface in the present embodiment, but may be another aspect such as a curved surface.

  A hole 38 is provided on the rib 16 of the cover plate 14. Under a general state, the hook portion 32 of the fixing member 20 of the paper stopper 12 is driven and inserted so as to correspond to the hole portion 38 on the rib 16. The torsion spring 30 is used to push and move the fixing member 20, and the hook portion 32 is separated from the hole portion 38 under normal conditions. Here, since the swinging directions of the paper stopper member 18 and the fixing member 20 are perpendicular to each other, when the hook portion 32 of the fixing member 20 is inserted into the hole 38 on the rib 16, the paper stopper member 18 is fixed. It becomes a state which cannot be rotated. That is, the entire sheet stopper 12 is fixed and does not move.

  Please refer to FIG. As shown in FIG. 1, the sheet pickup roller set 10 has a base 40 on which a roller 42 is pivotally attached. The base 40 is pivotally attached between the two ribs 16 of the cover plate 14. Two paper stoppers 12 are arranged on both sides of the sheet pickup roller set 10. The base 40 and the roller 42 are controlled to swing or rotate. Since the mechanism for controlling the base 40 and the roller 42 is conventional, it will not be described in detail here.

  Drive units 44 are disposed on both sides of the base 40 of the sheet pickup roller set 10. The drive unit 44 of the first embodiment is a bump protruding from the base 40, and a contact surface 46 is provided at the outer end. The contact surface 36 is an inclined surface in the present embodiment, but may be another aspect such as a curved surface.

  Please refer to FIG. 3 and FIG. As shown in FIGS. 3 and 4, when the copier is in the standby state, the sheet pickup roller set 10 is in the first position (that is, swings upward and is located at the top dead center). At this time, the contact surface 46 of the driving unit 44 on the sheet pickup roller set 10 contacts the contact surface 36 provided on the driven unit 34 on the fixing member 20 of the two paper stoppers 12, and the two The fixing member 20 is driven to swing, and the hook portion 32 on the fixing member 20 is inserted into the hole portion 38 of the rib 16. Therefore, the two paper stoppers 12 are fixed and do not move, and the paper stopper member 18 is positioned in front of the sheet 48 to fix the sheet 48.

  Please refer to FIG. 5 and FIG. As shown in FIGS. 5 and 6, when the sheet pickup module receives a command, the sheet feeding step is started, the sheet pickup roller set 10 is swung downward, and the driving unit 44 starts to be separated from the driven unit 34. When the sheet pickup roller set 10 is swung at a predetermined angle and reaches the second position, the driven portion 34 on the sheet pickup roller set 10 is completely moved from the driven portion 34 on the fixing member 20 of the two paper stoppers 12. When the hook portion 32 on the fixing member 20 is separated from the hole 38 of the rib 16 by the action of the torsion spring 30, the two paper stoppers 12 can freely rotate without being constrained.

  Please refer to FIG. As shown in FIG. 7, when the sheet pickup roller set 10 continues to swing downward and the roller contacts the sheet 48, the sheet 48 is fed forward by the rotating roller 42, and the sheet stopper member 18 is pushed by the sheet 48. be opened.

  When the paper feeding step is completed, the sheet pickup roller set 10 returns to the top dead center, and when the driven parts 34 on the fixing members 20 of the two paper stoppers 12 are pushed by the driving part 44, The hook portion 32 is inserted, and the paper stopper 12 returns to the fixed state as shown in FIGS.

(Second Embodiment)
Please refer to FIG. As shown in FIG. 8, the paper stopper 50 according to the second embodiment of the present invention includes a paper stopper member 52 and a fixing member 54 as in the first embodiment. Further, unlike the first embodiment in which two independent components are combined, the paper stopper 50 of the second embodiment is integrally formed with a paper stopper member 52 and a fixing member 54. Since the fixing member 54 of the second embodiment has flexibility, when the pickup roller set (not shown) presses the driven portion 56 at the rear end of the fixing member 54, the fixing member 54 bends and the rib hole is formed. The hook portion 58 at the front end enters the portion (not shown). Similarly, the direction in which the fixing member 54 bends is perpendicular to the swinging direction of the paper stopper member 52. After the sheet pickup roller set is separated, the hook portion 58 is separated from the hole due to the elasticity of the fixing member 54 itself. Therefore, the paper stopper 50 of the second embodiment can obtain the same function as that of the first embodiment even without a spring.

  The shape of the contact surface 36 on the drive unit 44 and the contact surface 36 on the driven unit 56 may be a slope / slope, a slope / curved surface, a curved surface / slope, or a combination of a curved surface / curved surface.

  While the preferred embodiments of the present invention have been disclosed above, as may be appreciated by those skilled in the art, they are not intended to limit the invention in any way. Various changes and modifications can be made without departing from the spirit and scope of the present invention. Accordingly, the scope of the claims of the present invention should be construed broadly including such changes and modifications.

10 Sheet pickup roller set 12 Paper stopper 14 Cover plate 16 Rib 18 Paper stopper member 20 Fixing member 22 Shaft 24 Pivot seat 26 Shaft hole 28 Shaft 30 Torsion spring 32 Hook part 34 Driven part 36 Contact surface 38 Hole part 40 Base 42 Roller 44 Driving portion 46 Abutting surface 48 Sheet 50 Paper stopper 52 Paper stopper member 54 Fixing member 56 Driven portion 58 Hook portion

Claims (10)

A seat pickup roller set and at least one sheet stopper, at least one sheet stopper and the sheet pickup roller set a sheet pick-up module Ru separate der each other,
The sheet pickup roller set and the paper stopper are pivotally attached to a cover plate, and the sheet pickup roller set includes a roller,
The paper stopper includes a paper stopper member and a fixing member provided with a hook portion and a driven portion.
The cover plate is provided with a hole so as to correspond to the hook portion of the fixing member of the paper stopper,
A drive unit is disposed on the sheet pickup roller set,
Said sheet pickup roller set, when the drive unit is moved to the first position adapted to press the driven part, is the hook portion is inserted in the fixing member in the hole of the front Stories cover plate Fixing the paper stopper,
Said sheet pickup roller set, when the drive unit is moved to the second position which is away from the said driven part, wherein the hook portion of the fixing member from the hole of the front Symbol cover plate is separated, said A sheet pickup module , wherein the sheet pickup roller set and the sheet stopper can be individually controlled and swinged by freely rotating the sheet stopper .   The sheet pickup module according to claim 1, wherein the sheet stopper member and the fixing member are configured such that two independent parts are pivotally attached to each other. The paper stopper member is pivotally attached to the cover plate,
The sheet pickup module according to claim 2, wherein the swinging direction of the sheet stopper member is perpendicular to the swinging direction of the fixing member. The paper stopper member has a pivot seat,
The seat pickup module according to claim 1, wherein the fixing member has a shaft, is pivotally attached to the pivot seat, and a spring is disposed on the shaft. The paper stopper member and the fixing member are integrally formed,
The sheet pickup module according to claim 1, wherein the fixing member has flexibility. The paper stopper member is pivotally attached to the cover plate,
6. The sheet pickup module according to claim 5, wherein the swinging direction of the paper stopper member is perpendicular to the direction in which the fixing member is bent. The drive unit of the sheet pickup roller set has a contact surface,
The sheet pickup module according to claim 1, wherein the driven portion of the fixing member of the paper stopper has a contact surface.   The sheet pickup module according to claim 7, wherein the contact surface provided on the driving unit of the sheet pickup roller set is an inclined surface or a curved surface.   The sheet pickup module according to claim 7, wherein the contact surface provided on the driven portion of the paper stopper is an inclined surface or a curved surface.   The sheet pickup module according to claim 1, wherein the hook portion and the driven portion are provided on the fixing member in a front-back relationship.

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