JPH058149Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a device for shielding a paper insertion opening in a printer that has a paper insertion opening at the bottom and performs printing by feeding paper from the insertion opening. It is something.

[Conventional technology]

Conventionally, printers that have an insertion slot at the bottom and are equipped with a device that feeds paper from this insertion slot (hereinafter referred to as bottom feed) use a dedicated table with a groove into which paper can be inserted. be.

A conventional example will be explained below with reference to the drawings.

FIG. 7 is a partially cutaway perspective view showing a conventional example, and FIG. 8 is a side view thereof.

Rubber feet 2 are attached to the bottom of the printer 1, and the printer 1 is placed on a dedicated table 3. A groove 5 is provided in the dedicated table 3 so that the paper 4 can pass therethrough. Further, a paper insertion slot 6 is provided at the bottom of the printer 1. Therefore, the paper 4 is inserted from below into the groove 5 of the dedicated table 3, passes through the paper insertion slot 6, and is set between the platen 7 and the pressure roller 8. When the paper 4 is set, the platen 7 is driven by a driving means (not shown).
The paper 4 is fed in the direction of arrow A shown in FIG. The paper is fed in this manner, and when the paper 4 is wound around the platen 7, printing becomes possible, and the printing head 9 performs printing by a driving means (not shown).

By the way, when the print head 9 performs a printing operation,
As a result, noise is generated from the print head 9, platen 7, etc. Since this noise is generated in the print head 9 and is large, it is emitted from the paper insertion slot 6 which is located close to the printer 1 along the bottom surface of the printer 1 to the outside in all directions. Therefore, to prevent this, Figures 9 and 10
As shown in the figure, a paper introduction groove 10 corresponding to the groove 5
A soundproofing material 12 having a groove 11 into which the rubber feet 2 can be inserted is placed between the bottom of the printer 1 and the dedicated table 3. Thereby, the noise is emitted below the dedicated table 3 through the paper insertion port 6, the paper introduction groove 10, and the groove 5, and can be diffused only to one side of the printer 1.

[Problems that this invention attempts to solve]

However, in the apparatus configured as described above, the paper 4 is not guided by anything until it is set between the platen 7 and the pressure roller 8, so that the paper 4 hangs below the platen 7 as shown in FIG. When the paper 4 is fed, it vibrates and generates vibration noise. There is a problem in that it is not possible to prevent this vibration sound and the noise generated by the print head 9, etc. mentioned above, from coming out from the paper insertion slot 6 and being emitted through the paper introduction groove 10 and the groove 5. Ta. Therefore, the present invention is
The purpose of this invention is to solve the above problems without using a soundproofing material 12.

[Means for solving problems]

A guide body that surrounds a part of the paper along the paper feeding path is provided in the paper insertion slot at the bottom of the printer, and the guide body is rotatably attached and includes a rotating body that contacts one side of the paper. , comprising a guide plate and a side plate that contact the other surface of the paper, and a guide bar, and the rotating body is biased by a biasing means.

[Effect]

According to the above configuration, when the paper is inserted from the paper insertion slot, it passes through the guide body and is set between the platen and the presser roller. The rotating body is biased by biasing means. The paper insertion slot can be covered by the rotating body, the side plate, the guide plate, and the paper.

Further, when a printing operation is performed without using the paper insertion slot, the rotating body can close the paper insertion slot together with the side plate by the biasing means.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. Note that elements common to each drawing are given the same reference numerals.

FIG. 1 is a partially cutaway perspective view showing a first embodiment of the present invention, FIG. 2 is a side view thereof, and FIG. 3 is an exploded perspective view showing the shielding structure of the first embodiment. It is.

FIG. 4 is a partially cutaway side view showing the shielded state of the first embodiment, and FIG. 5 is a partially cutaway side view showing the second embodiment.

First, the configuration of the first embodiment will be explained.

Side plates 23 are provided in contact with upright portions 21 and 22 on both left and right sides of the paper insertion slot 6, which is formed by bending a part of the bottom of the printer. A guide plate 25 having a curved portion 24, a guide bar 26, and a plate 27 serving as a rotating body are attached to this side plate 23.
The curved portion 24 is in the shape of a circular arc, centered on the rotation fulcrum of the plate 27, and having a radius longer than the rotation radius of the plate 27 by the paper thickness of the paper 4. The guide plate 25 is connected to one rising portion 21 of the paper insertion slot 6.
A curved portion 24 is attached in contact with the tip portion 28 of the holder.

The plate 27 has a notch 30 as shown in FIG.
is provided, and a through hole to which the shaft 31 is attached is provided. The shaft 31 is fitted with a torsion spring 32 and fitted into a fitting hole 33 of the side plate 23. Further, as shown in FIG. 1, the plate 27 is attached using the tip end 29 of the other upright portion 22 as a pivot point. The plate 27 is moved to the second position by a torsion spring 32.
It is biased in the direction of arrow B shown in the figure. Therefore, the rotating body called plate 27 and the guide plate 25
The guide bar 26 and the guide bar 26 constitute a guide body that surrounds a portion of the paper.

Next, the effect will be explained.

In this device according to the present invention, when printing is performed without inserting the paper 4 from the paper insertion slot 6, the plate 27 is attached to both ends 28, 29 of the upright portions 21, 22.
is in contact with That is, as shown in FIG. 4, the plate 27 closes the paper insertion slot 6 with the side plate 23.

Here, the case of bottom feed will be described.

First, the plate 27 blocking the paper insertion slot 6 is rotated in the opposite direction of the arrow B shown in FIG. 2 by a rotation means (not shown). When the paper 4 is inserted through the paper insertion slot 6, the paper 4 passes through the guide plate 25 and the guide bar 26, and is set between the platen 7 and the pressure roller 8. Here again, by a rotating means (not shown), the arrow B shown in FIG.
Rotate the plate 27 in the direction. As a result, the plate 27 is in a state in which it always attempts to rotate in the direction of arrow B due to the biasing force of the torsion spring 32.

When the printing operation is started, the paper 4 is fed in the direction of the platen 7 by a drive means (not shown), and the plate 27 accordingly rotates in the opposite direction of the arrow B shown in FIG. If paper feeding is not performed, the plate 27 rotates little by little in the direction of arrow B again. Printing is performed in this way, and the distance between the plate 27 and the inner wall of the curved portion 24 of the guide plate 25 is minimized to allow the paper 4 to pass through, and the plate 27 is spaced between the side plate 23 and the inner wall of the curved portion 24 of the guide plate 25. Since it rotates while touching, the plate 27 and the curved part 2
4 and the side plate 23 can cover the paper insertion slot 6.

A second embodiment of the present invention is shown in FIG. Second
In the embodiment, the curved portion 34 has an arbitrary curve. Further, the distance between the tip of the plate 27 and the inner wall of the curved portion 34 is set larger than the thickness of the paper 4. For the paper 4, use what is called a strong material.

The operation will be explained using the above configuration.

The process up to setting the paper 4 on the platen 7 is the same as in the first embodiment. Thereupon, the plate 27 attempts to rotate in the direction of arrow C shown in FIG. 5 due to the biasing force of the torsion spring 32. Therefore, from the point D where the paper 4 is pressed by the platen 7 and the pressure roller 8 to the contact point E with the plate 27, the paper 4 is sliding on the leading edge 28, so that the paper 4 is moved by the leading edge of the plate 27. It is pressed down and kept evenly stretched at all times. Therefore, plate 2
7, the curved portion 34, the paper 4, and the side plate 23 can cover the paper insertion slot 6.

The second embodiment has a unique effect in that the dimensions of the plate 27 and the curved portion 34 can be set and produced with a degree of freedom.

In the above two embodiments, a torsion spring was used as a means for biasing the plate, but instead of using the torsion spring, the plate 37 is biased by its own weight as shown in FIG. It goes without saying that even if the rotating means is removed, the same effect as in the above embodiment can be obtained.
Note that the plate and the side plate may be separated from each other, and a soundproofing material may be attached to the plate side so as to cover the separated portion.

[Effect of idea]

As described above in detail, according to the present invention, in the case of a bottom feed, the paper insertion slot can be covered by the guide plate, side plate, plate, and paper. In addition, when the paper is not a bottom feed type, the plate can completely close the paper insertion slot together with the side plate. Therefore, there is an effect of preventing the noise generated inside the printer and the vibration sound of the paper from leaking to the outside of the printer. Moreover, there is no need to provide any special soundproofing material to prevent noise, which also has the effect of keeping the cost of the soundproofing device low.

[Brief explanation of drawings]

Fig. 1 is a partially cutaway perspective view showing a first embodiment of the present invention, Fig. 2 is a side view of Fig. 1, and Fig. 3 is a side view of Fig. 1;
The figure is an exploded perspective view showing the shielding structure of the first embodiment, FIG. 4 is a partially cutaway side view showing the shielding state of the first embodiment, and FIG. 5 is a partially cutaway side view showing the second embodiment. FIG. 6 is an explanatory diagram of the biasing means by the weight of the plate; FIG. 7 is a partially cutaway perspective view of the conventional example; FIG. 8 is a partially cutaway side view of the conventional example; FIG. 9 is a perspective view of a soundproofing material showing a conventional example, and FIG. 10 is a diagram of installing a soundproofing material showing a conventional example. 4...Paper, 6...Paper insertion slot, 23...Side plate, 25...Guide plate, 26...Guide bar, 2
7... plate, 31... shaft, 32... torsion spring.

Claims (1)

[Claims for Utility Model Registration] In a device for shielding a bottom paper insertion slot in a printer having a paper insertion slot at the bottom, a guide body that surrounds a part of the paper along the paper feeding path is connected to the paper insertion slot. The guide body includes a rotating body whose tip is urged to rotate downward while being in contact with one surface of the paper;
A bottom paper insertion slot in a printer, comprising a guide plate having a curved part that curves along the rotation locus of the tip of the rotating body, and an upper part of the curved part contacts the other surface of the paper. Shielding device.