JPH0729061Y2 - Paper cassette - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention relates to a paper feed cassette attached to a cassette paper feed unit of a copying machine, and more particularly to a so-called universal type paper feed cassette capable of loading plural sizes of recording paper. .

[Conventional technology]

2. Description of the Related Art Conventionally, a so-called universal type paper feed cassette capable of loading recording paper of a plurality of sizes has been known. As a conventional paper feed cassette of this type, there is one in which a pair of left and right recording paper side end guides are provided so as to be able to approach and separate via a pinion and a rack, and a recording paper upstream end guide is provided so as to be movable back and forth.

[Problems to be solved by the device]

In the above-mentioned conventional paper feeding cassette, the adjustment of the distance between the recording paper side edge guides and the adjustment of the position of the recording paper upstream end guide in the recording paper conveyance direction must be performed separately according to the size of the recording paper. However, there is a problem that the operation is troublesome.

It is an object of the present invention to provide a paper feed cassette capable of adjusting the position of a recording paper side end guide and the position of a recording paper upstream end guide at the same time.

[Means for Solving the Problems]

The paper feed cassette according to the present invention has a pair of recording paper side end guides mounted on the paper feed cassette body so as to be movable in a direction orthogonal to the recording paper conveyance direction, and a paper feed cassette body provided so as to be movable in the recording paper conveyance direction. In a paper feed cassette equipped with an attached recording paper upstream end guide, in the bottom plate of the paper feed cassette main body, in a C-shaped arrangement in which the mutual distance increases in the direction opposite to the recording paper conveyance direction,
A pair of pin guide holes are formed, and each recording paper side end guide is attached with a recording paper side end guide attachment plate having a long pin sliding hole in the recording paper conveyance direction and extending in the recording paper conveyance direction. The recording paper upstream end guide is provided with a recording paper upstream end guide mounting plate that has a long pin sliding hole in the direction orthogonal to the recording paper conveyance direction and extends in the direction orthogonal to the recording paper conveyance direction, and is formed on the bottom plate. The first pin, which is moved along one of the paired pin guide holes, is recorded on the same side as the one pin guide hole of the pair of recording paper side end guide mounting plates. It is inserted in the pin sliding hole of the paper side edge guide mounting plate and the pin sliding hole of the recording paper upstream edge guide mounting plate, and in the other pin guiding hole of the pair of pin guiding holes formed in the bottom plate. The second pin that is moved along the Of the recording sheet side end guide mounting plate and the pin sliding hole of the recording paper upstream end guide mounting plate on the same side as the other pin guide hole of the mounting plate. .

[Function of device]

When the recording paper upstream end guide is moved in the recording paper conveyance direction, for example, the recording paper upstream end guide mounting plate pushes the first and second pins in the recording paper conveyance direction, and the first and second pins are inserted into the pin guide holes. Move along. At this time, the first and second pins move inward through the pin sliding holes of the recording paper upstream end guide mounting plate.

Further, the first and second pins move in the recording paper conveyance direction through the pin sliding holes while pressing the pair of recording paper side end guide mounting plates in a direction to approach each other. Therefore, the pair of recording paper side end guide mounting plates move so as to approach each other, and accordingly, the pair of recording paper side end guides move so as to approach each other.

In this way, by moving the recording paper upstream end guide in the recording paper transport direction, the pair of recording paper side end guides move so as to approach each other.

On the contrary, by moving the recording paper upstream end guide in the direction opposite to the recording paper conveyance direction, the pair of recording paper side end guides move so as to be separated from each other.

〔Example〕

An embodiment of the present invention will be described below with reference to the drawings. In the following description, the recording paper conveyance direction is as shown in FIG.
The direction from the right side to the left side of.

In FIG. 1 and FIG. 2, the paper feed cassette 1 includes a paper feed cassette main body 2 and an H-shaped recording paper downstream viewed from a plane provided at a downstream end of the paper feed cassette main body 2 in the recording paper conveyance direction. The end mounting plate 3 is provided. The recording paper downstream end mounting plate 3 is swingably attached to the paper feed cassette body 2 by pivotally attaching both sides of the upstream end in the recording paper conveyance direction to both side walls of the paper feed cassette body 2. It is installed. A compression spring 4 is provided between the downstream end of the lower surface of the recording paper downstream end mounting plate 3 in the recording paper conveyance direction and the bottom plate 2a of the paper feed cassette body 2.

Elongated recording paper side end guide guide holes 5 and 6 are formed in both sides of the downstream end of the bottom plate 2a of the paper feed cassette body 2 in the recording paper conveyance direction, respectively, in a direction orthogonal to the recording conveyance direction. At the center of the width of the bottom plate 2a of the paper feed cassette main body 2, a recording paper upstream end guide guide hole extending from a substantially central position of the paper feed cassette main body 2 in the recording paper transfer direction to an upstream end of the paper feed cassette main body 2 in the recording paper transfer direction. 7 are formed.

On both sides of the guide hole 7 of the recording paper upstream end guide of the bottom plate 2a of the paper feed cassette body 2, there are provided a pair of pin guide holes 8 and 9 that open in a V shape in the direction opposite to the recording paper conveyance direction. Has been formed. Further, at the downstream end of the bottom plate 2a of the paper feed cassette main body 2 in the recording paper conveyance direction, holes 10 extending in a direction orthogonal to the recording paper conveyance direction are formed at both sides of the width center as boundaries.

The recording paper side end guides 11 and 12 guided by the recording paper side end guide guide holes 5 and 6, respectively, are
Is attached to the recording paper side end guide mounting plates 13 and 14 which are arranged along the rear surface of the bottom plate 2a and are long in the recording paper transport direction, through the connecting portions passing through the recording paper side end guide guide holes 5 and 6. ing. The downstream ends of the recording paper side edge guide mounting plates 13 and 14 in the recording paper conveyance direction are bent upward, and a separation claw is provided at the upper end of the bent portion.
13a and 14a are formed.

The bent portions of the recording paper side end guide mounting plates 13 and 14 pass through the holes 10, and the separating claws 13a and 14a are located above the recording paper downstream end mounting plate 3. Each of the recording paper side end guide mounting plates 13 and 14 is formed with pin sliding holes 13b and 14b extending from a substantially central portion thereof to a vicinity of an upstream end in the recording paper conveying direction.

The recording paper upstream end guide 15 guided by the recording paper upstream end guide guide hole 7 is arranged along the back surface of the bottom plate 2a of the paper feed cassette main body 2 and is long in the recording paper upstream direction. The recording paper upstream end guide is attached to the end guide attachment plate 16 via a connecting portion passing through the guide hole 7. On both sides of the recording paper upstream end guide mounting plate 16, long pin sliding holes 16a are formed in a direction orthogonal to the recording paper conveyance direction.

The pin sliding hole 13b of the recording paper side end guide mounting plate 13, the pin sliding hole 16a of the recording paper upstream end guide mounting plate 16 and the pin guide hole 8 on one side from the width center of the paper feed cassette, The pin 17 is slidably inserted so as not to come off.

The pin sliding hole 14b of the recording paper side end guide mounting plate 14, the pin sliding hole 16a of the recording paper upstream end guide mounting plate 16 and the pin guide hole 9 on the other side of the width center of the paper feed cassette, The pin 18 is slidably inserted so as not to come off.

In the above configuration, depending on the size of the recording paper,
To adjust the distance between the recording paper side edge guides 11 and 12 and the front-back position of the recording paper upstream edge guide 15, use the recording paper upstream edge guide.
It is sufficient to move 15 to a position according to the length of the recording paper.

When the recording paper upstream end guide 15 is moved in the recording paper conveyance direction, the recording paper upstream end guide mounting plate 16 pushes the pins 17 and 18 forward, and the pins 17 and 18 move along the pin guide holes 8 and 9. To do. At this time, the pins 17 and 18 move in a direction in which they approach the pair of pin sliding holes 16a of the recording paper upstream end guide mounting plate 16.

In addition, the pins 17 and 18 are the pair of recording paper side end guide mounting plates 1
While pushing 3 and 14 toward each other, pin slide hole 13
Move b and 14b toward the recording paper conveyance direction. Therefore, the pair of recording paper side end guide mounting plates 13 and 14 move so as to approach each other, and accordingly, the pair of recording paper side end guides 11 and 12 move so as to approach each other. The state after the movement is shown in FIG.

Thus, by moving the recording paper upstream end guide 15 in the recording paper conveyance direction, a pair of recording paper side end guides 11,
The 12 move so that they approach each other.

Conversely, by moving the recording paper upstream end guide 15 in the direction opposite to the recording paper conveyance direction, a pair of recording paper side end guides
11 and 12 move so as to be separated from each other.

As shown in FIG. 4, recording papers PA5 and PA4 of each size in row A
Since PA3 and PA3 are similar, each size recording paper PA5, PA4
By aligning the downstream edges of the PA3 and PA3 in the paper feed direction and aligning the width center lines, the PA5 and PA4 paper of each size
It is possible to connect the corners of the upstream side of the recording paper conveyance direction on the same side of and PA3 with straight lines L1 and L2, respectively. Therefore, by forming the pin guide holes 8 and 9 at the positions corresponding to the straight lines L1 and L2, it is possible to position the recording papers of a plurality of sizes in the row A.

Further, since the recording paper of each size of the B row is similar, the arrangement of the pin guide holes 8 and 9 is made to correspond to the recording paper of the B row size, so that the recording papers of a plurality of sizes of the B row are formed. Can be positioned.

[Effect of device]

According to the present invention, the position adjustment of the recording paper side edge guide and the position adjustment of the recording paper upstream end guide can be performed at the same time, and the recording papers of a plurality of sizes can be easily positioned.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention, FIG. 1 is a perspective view showing a paper feed cassette, FIG. 2 is a plan view, and FIG. 3 is a state after moving a recording paper upstream end guide in a recording paper conveying direction. FIG. 4 is a plan view showing the recording paper of each size in the A row. 1 ... Paper feed cassette, 2 ... Paper feed cassette body, 8, 9
...... Pin guide holes, 11, 12 ...... Recording paper side edge guides, 13, 14
...... Recording paper side end guide mounting plate, 13b, 14b ...... Pin sliding hole, 15 ...... Recording paper upstream end guide, 16 ...... Recording paper upstream end guide mounting plate, 16a ...... Pin sliding hole, 17 ... … Pin, 18 ……
pin.

Claims (1)

[Scope of utility model registration request] 1. A pair of recording paper side end guides 11 and 12 mounted on a paper feed cassette body 2 so as to be movable in a direction orthogonal to the recording paper conveyance direction, and a paper feed cassette body so as to be movable in the recording paper conveyance direction. In a paper feed cassette equipped with the recording paper upstream end guide 15 attached to the sheet 2, the bottom plate 2a of the paper feed cassette main body 2 has a V-shape in which the mutual distance increases in the direction opposite to the recording paper conveyance direction. In this arrangement, a pair of pin guide holes 8 and 9 are formed, and each of the recording paper side end guides 11 and 12 has long pin sliding holes 13b and 14b in the recording paper conveyance direction and the recording paper side end guides 11 and 12 are arranged in the recording paper conveyance direction. The extended recording paper side end guide mounting plates 13 and 14 are attached respectively, and the recording paper upstream end guide 15 has a long pin sliding hole 16a in a direction orthogonal to the recording paper conveyance direction and is orthogonal to the recording paper conveyance direction. Attach the recording paper upstream edge guide mounting plate 16 that extends in the direction Is, among the bottom plate 2a formed in the pair of pin guide hole 8,9, first pin 17 is moved along one of the pin guide hole 8, 1
Of the pair of recording paper side end guide mounting plates 13 and 14, the pin sliding hole 13b of the recording paper side end guide mounting plate 13 and the pin of the recording paper upstream end guide mounting plate 16 on the same side as the above-mentioned one pin guide hole 8 The second pin 18, which is inserted through the sliding hole 16a and is moved along the other pin guide hole 9 of the pair of pin guide holes 8 and 9 formed in the bottom plate 2a, is
Of the pair of recording paper side end guide mounting plates 13 and 14, the pin sliding hole 14b of the recording paper side end guide mounting plate 14 on the same side as the other pin guide hole 9 and the pin of the recording paper upstream end guide mounting plate 16 A paper feed cassette characterized by being inserted into the sliding hole 16a.