JPS6097133A - Sheet guiding apparatus - Google Patents

Abstract

PURPOSE:To stably guide a sheet member by installing a brake means for restricting the transfer of an interlocking means, in the captioned apparatus in which a pair of guide members are installed in shiftable ways in the direction of the width of the sheet member through the interlocking means, onto a base for loading the sheet member. CONSTITUTION:The captioned apparatus is equipped with a base 6 for loading a sheet along the direction A of feed and a pair of guide members 7 shiftable in the direction B of the width of the sheet on the base 6. Each guide member 7 can be interlocked so as to be connected and separated by a pinion 9 and a pair of rack members 10. In this case, a brake member 16 is fixed onto the upper edge of the pivotal shaft 15 of the pinion 9 by a screw 17, and the right and left cutting-out tongue pieces 16a in pair are bent and springily attached onto the outer peripheral edge of the pinion 9, and the both edge parts 16b are bent at a right angle, and a guide pin 13 is engaged with the cut part 18 formed by the bent both edge parts. The blind movement such as excessive turn is prevented by applying a little brake action onto the pinion 9 by said tongue piece 16a.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a sheet guide device that guides sheets such as copy paper when feeding the sheets to a copying machine or the like.

[Technical background of the invention and its problems]

This type of sheet guide device generally includes a sheet mounting base and a pair of sheets movable in the width direction of the sheets on the base so as to regulate and guide both sides of the sheets on the base. a guide member, and an interlocking means movable so as to interlock the movement of the pair of guide members along the width direction of the sheets, and the interlocking means is rotatably pivoted to a base; The configuration includes a rack member that meshes with the binion and is provided corresponding to each of the guide members.In an apparatus with such a configuration, the size of the sheets placed on the mounting base is very large. By sliding the pair of left and right guide members according to the situation and positioning them along the sides of the sheets, the sheets can be stably fed to the required part of the copying machine, etc., without causing sideways displacement. The intended role of such a device is to guide the guide members so that the guide members move in the width direction using a so-called rack-binion mechanism consisting of a pair of rack members and a single pinion. While the moving operation is extremely light and easy to operate, it tends to move from the specified position due to vibration etc. while feeding the sheets, making it difficult to move the sheets accurately and easily on both sides. The function of guiding and holding in a stable state was insufficient.

This has caused problems such as looseness between the sheets and the guide member, resulting in misalignment of the sheets.

[Purpose of the invention]

The present invention has been made based on the above circumstances, and its purpose is to be able to easily operate an integral guide member according to the size of the sheets, and to accurately and stably move the sheets at the regulating position of the sheets. To provide a sheet guiding device capable of guiding and holding sheets.

[Summary of the invention]

In order to achieve such an object, the present invention engages a braking means with an interlocking means for a guide member such as a rack and binion mechanism, thereby preventing blind movement of the interlocking means and achieving the desired result. It is structured to achieve a purpose.

[Embodiments of the invention]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The sheet guide device of the present invention will be described below with reference to embodiments shown in the drawings.

FIG. 1 shows an external view of a copying machine in which the sheet guide device of the present invention is applied, in which 1 is a copying machine that receives sheets P such as copy paper, and 2 is a copying machine that receives sheets P such as copy paper. A paper feeding port of a copying machine I, in which a sheet guiding device 3 of the present invention and a paper feeding cassette 4 containing copy paper of a specified size are installed below the paper feeding port. Attached to the side is a tray 5 that receives sheets that have been copied in a predetermined manner within the machine.

As shown in FIG. 1, this embodiment shows a specific example in which the sheet guide device of the present invention is configured as a so-called manual paper feeder, and the guide device 3 feeds sheets P one by one into the machine. It is designed to be inserted and fed.

The guide device 3 includes a loading base 6 on which the sheets P are placed along the feeding direction indicated by arrow A, and is movable in the width direction of the sheets indicated by arrow B on the base. It has a pair of L-shaped metal guide members 7, and each of these guide members 7 can slide within the range of the guide holes 8 formed in the width direction of the base 6. It is said that The base 6 has a plate shape, and its front end portion corresponding to the paper feed port 2 is configured to be removably fitted into the paper feed port 2.

In FIG. 2, the base 6 is shown as viewed from the back side), and a binion 9 is rotatably disposed in the center of the base 6.
A pair of rack members 10 are arranged symmetrically with respect to , one end of each is meshed with the pinion 9, and the other end is fixed to the corresponding guide member 7 via a pin 11, 12, respectively.

Therefore, when one guide member 7 is moved along the width direction B, the other guide member 7 is interlocked with this and slides toward or away from each other. That is, the pinions 6-9 and the pair of rack members 10 constitute interlocking means for interlocking both guide members 7.

The bins 11, 12 are inserted through the corresponding guide slots 8 at intervals as shown in FIG.
is thereby guided to move along the width direction B. In addition, guide pins 13 are further protruded from the base 6 on both sides of the pinion 9, and guide and hold the rack member 10 from the back side of the corresponding rack member 10 so that it does not come out of mesh with the pinion 9. are doing.

In the figure, reference numeral 14 denotes a guide reinforcing plate υ fixed to the back surface of the base 6 by appropriate means, and is provided in the width direction along the traveling path of the rack member 100, which constitutes the interlocking means. This reinforcing plate 14 also has an elongated hole 8 formed therethrough in alignment with the base 6.

A pivot shaft 15 that rotatably supports the binion 9 is projected from the back surface of the base 6 as shown in FIG. 4, and is fixed directly to the base 6 or to the reinforcing plate 14.

In such a configuration, in the present invention, a braking member 16 constituting a braking means made of a rectangular plate spring is fixedly attached to the upper end of the pivot shaft 15 by a screw 17, and a pair of left and right of the member 16 is fixed. The cut-out tongue piece 16h is bent and is configured to elastically engage the outer peripheral edge of the pinion 9. Further, both ends 16b of the braking member 16 are bent at right angles, and the guide pin 13 is engaged with a notch 18 formed therein. Therefore, the pinion 9 is connected to the tongue piece 1 of the brake member 16.
Since the rotational movement of the rotational movement 6a is slightly braked, blind movement such as excessive rotation is prevented. Therefore, the entire movement of the interlocking means is also subjected to a light braking action, so that the guide member 7
During the movement operation, blind movement due to inertia of each moving member and positional shift due to vibration are prevented.

The braking member 16 is fixed to the pivot shaft 15 by a screw 17, and also has a pair of guide pins 13 and a notch 1.
8 prevents it from rotating together with the pinion 9.

Such a braking member 16 can be easily manufactured by pressing a plate spring.

The outer circumferential edge 9a of the pinion 9, which engages directly with the tongue piece 16h of the braking member 16, has a slightly enlarged diameter and is formed into a toothless edge for direct engagement, as shown in FIG. However, unlike the embodiment, it is also possible to engage the tongue piece 16a not with the outer peripheral edge of the pinion 16 but with the flat surface of the upper surface.

In the above embodiment, the braking member 16 constituting the braking means is engaged with the binion 9 of the interlocking means so as to provide a braking action, but it is engaged with another member of the braking means, that is, the rack member 10. May be combined. This modification is shown in FIGS. 5 and 6.

As in this modification, a braking member 16' formed of a leaf spring
is fixed to the upper end of the pivot shaft 15 with a screw 17, and is inclined toward both ends so as to be elastically engaged with the outer peripheral edge of the rack member 10, respectively. As a result, the same braking action is applied to both rack members 10, so that the movement of the entire first stage of the interlocking element 9 is controlled so as not to cause blind movement or positional deviation, as described above.

Note that in order to more effectively engage the brake member 16' with the rack member 10, both sides 1 of the brake member 16' are
6c' may be further bent toward the rack member.

Also in this modification, in order to prevent the member 16' from turning, the notches 18' at both ends of the member are inserted into the corresponding guide pins 1.
3. Furthermore, instead of comprising the braking means in the present invention with a leaf spring, it may be constructed with a brake pad 19, for example, as shown by the imaginary line in FIG. The pad 19 is provided on the base 6 at a position close to the running path of the corresponding rack member 10.
A light braking action may be constantly exerted on the corresponding rack member 10 by this.

In any case, if the braking members 16, 16', 19 are arranged to exert braking on the pinion 9 or the rack member 10 at symmetrical positions about the pivot shaft 15, both the guide members 7,
7. It is definitely desirable that the movement of 10.

Although the present invention is embodied as a manual paper feeding device in the above embodiments, it can also be applied to a device that continuously feeds manuscript paper, and is not limited to the embodiments.

Further, the base may be integrated with the upper cover of the paper feed cassette, for example, and the present invention may include various modifications other than the above-described embodiments and modifications.

〔Effect of the invention〕

As explained above, according to the present invention, when a pair of guide members is moved in the width direction, it is possible to quickly and accurately position the pair of guide members at a predetermined position, prevent blind movement of the guide members, and Therefore, it is possible to provide a sheet guide device that eliminates lateral displacement of the guide member due to vibration or the like during sheet feeding, and guides the sheet so that a more reliable and stable sheet feeding operation can be achieved.

[Brief explanation of the drawing]

FIG. 1 is an external perspective view of a copying machine to which the sheet guide device of the present invention is applied, FIG. 2 is an enlarged view of the back side of the mounting base of the sheet guide device shown in FIG. 1, and FIG. 4 is an enlarged sectional view taken along the line ■-■ in FIG. 2, FIG. 5 is a sectional view of a modification corresponding to FIG. 4, and FIG.
The figure is a plan view of FIG. 5. 3... Sheet guide device, 6... Placement base, 7...
- Guide member, 9... Binion, 10... Rack member, 16, J6'... Braking member, 19... Brake pad. Applicant's representative Patent attorney Takehiko Suzue Figure 1 Figure 2 Figure 4 Figure 5 Figure 6 Figure 0 Procedural amendment 61 q59.7□1 completed. Manabu Shiga, Commissioner of the Japan Patent Office1, Indication of the case, Patent Application No. 1983-2038252, Name of the invention Sheet type guide device3, Person making the amendment Relationship with the case Patent applicant (307) Toshiba Co., Ltd. 4. Agent 5, Voluntary Amendment 7, Contents of Amendment (1) In the 7th page of the specification, line 13, the phrase "guidance reinforcing plate" is corrected to read "convex part for guiding." (2) Similarly, page 7, lines 15-16, “This reinforcing plate...
・It has been done. ” delete. (3) Similarly, in lines 19 and 20 of the 7th car, ``There is, but the base 6... has been done.'' is corrected to ``I am.''. (4) Similarly, on page 10, lines 3 to 6, delete the line ``In addition,...''. (5) Corrections will be made as shown in Figures 2, 3, 4, 5, and 6 and 7 of the drawings. Figure 2 JP-A Showa GO-97133 (6) Figure 4 Figure 5 Figure 6 Figure 0 7. )

Claims (5)

[Claims] (1) A base for placing sheets, and a pair of bases movable in the width direction of the sheets so as to regulate and guide both sides of the sheets on the base in the direction of travel. and a movement means movable so as to interlock the movement of the pair of guide members along the width direction of the sheets,
In the sheet guide device, the interlocking means includes a binion rotatably pivotally mounted on a base, and a rack member that meshes with the binion and is provided corresponding to each guide member, wherein the interlocking means includes: A sheet guide device 0 characterized in that a braking means for braking movement is engaged with the interlocking means. (2) The sheet guide load according to claim 1, wherein the braking means is a leaf spring attached to the pivot shaft of the binion and tightly engaged with the binion. (3) The sheet guide device according to claim 2, wherein the leaf spring has a pair of cut-out tongues, and the pair of tongues are elastically engaged with the binion. (4) The sheet guide device according to claim 1, wherein the braking means is a leaf spring that is attached to the pivot shaft of the binion and engages with the pair of rack members. . (5) The sheet guide device 0 according to claim 1, wherein the braking means is a brake pad provided on the mounting base close to the running path of the rack member.