JPH0316842Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a mounting structure for a slide stay used for fixing a sheet guide in a printer.

[Conventional technology]

Conventionally, various mounting structures for this type of slide stay have been implemented, such as those shown in FIGS. 2 and 3, for example.

In a printer that can print on either single sheets or continuous paper, there is a slide stay 2 that fixes the sheet guide 1 tilted at a certain angle as a backrest for single sheets, or fixes the sheet guide 1 as a feed guide for continuous paper. It is installed interposed between the seat guide 1 and the top cover 3.

The slide stay 2 has a stepped elongated hole 4 as a fitting hole formed along the longitudinal direction, and one end of the elongated hole 4 is a narrow elongated hole 4a. A locking hole 4b is formed in this as a fitting hole for fixing the sheet guide 1 at a constant angle, and a shaft 3a on the upper cover 3 side is fitted into this.

At the other end of the slide stay 2 located on the opposite side from the lock hole 4b, a cutout hole 4c is formed as a key-shaped fitting hole that fits into the shaft 1a on the sheet guide 1 side.

Regarding the details of the mounting structure of the slide stay 2, the inner wall surfaces of the long holes 4, 4a, the lock hole 4b, and the notch hole 4c as fitting holes on the slide stay 2 side are respectively facing toward the sheet guide 1 side. A drawing taper is formed which expands and forms a drawing taper angle B.

Fitting holes 4, 4a, 4 having this drawing taper
Shafts 3a and 1a on the top cover 3 and sheet guide 1 side that fit or slide on b and 4c
Both have a straight bar shape with a uniform cross section.

[Problem that the invention attempts to solve]

However, in such a conventional slide stay mounting structure, there is nothing between the fitting holes 4, 4a, 4b, 4c on the slide stay 2 side and the shafts 3a, 1a on the top cover 3 or seat guide 1 side. Since the slide stay 2 is not designed to prevent the sheet from falling out, when securing the sheet guide 1 with the slide stay 2 as a backrest when using single sheets or as a feed guide when using continuous paper, the fitting hole is 4, 4a, 4b, 4c were detached from the shafts 1a, 3a, and the slide stay 2 was easily detached.

Therefore, the present invention was devised by focusing on the above-mentioned problem, and its purpose is to prevent the slide stay from coming off. The purpose of the present invention is to provide a stay mounting structure.

[Means for solving problems]

The structure of the present invention that achieves the above object is to form a triangular cross section with an apex at the parting line as a taper on the inner wall surface of the fitting hole on the slide stay side, and to form a triangular cross section with an apex at the parting line on the inner wall surface of the fitting hole on the side of the seat guide and upper cover. The gist is that a V-shaped cross section corresponding to the triangular cross section is formed.

[Effect]

In the above configuration, in order to prevent the slide stay from coming out, even if the seat guide and the shaft on the top cover side are fitted or slid into the fitting hole on the slide stay side and the seat guide is operated, the inner wall surface of the fitting hole is molded. Since the triangular cross section and the V-shaped cross section formed on the peripheral wall surface of the shaft closely engage with each other, the slide stay does not come off from the upper cover or the shaft on the seat guide side.

〔Example〕

Hereinafter, embodiments of the present invention will be described in detail based on the drawings.

Fig. 1 is a front view showing the slide stay mounting structure of the present invention, Fig. 4 is a front view showing details of the slide stay mounting structure of Fig. 1, and Fig. 5 is the - of Fig. 4.
FIG.

In FIG. 1, reference numeral 15 denotes a middle cover that covers the central part of the printer body, and an upper cover 12 that covers the upper side is attached to the upper part of the middle cover. A seat guide 13 is rotatably attached to the upper cover 12, and a shaft 12a is integrally formed on both inner end surfaces. Sheet guide 13
can be fixed as a backrest for the cut sheet 16 or as a feed guide for the continuous sheet 17 by a slide stay 11 installed between the top cover 12 and the top cover 12.

The slide stay 11 has a stepped long hole 18 as a fitting hole formed along the longitudinal direction.
One end is a narrow elongated hole 18a, and a locking hole 18b is formed in this as a fitting hole for tilting and fixing the sheet guide 13 at a certain angle, into which the shaft 12a on the upper cover 12 side is fitted. has been done.

At the other end of the slide stay 11 located on the opposite side from the lock hole 18b, there is a cutout hole as a key-shaped fitting hole that fits into the shaft 13a integrally formed on both outer end surfaces of the seat guide 13. 18c
is formed.

The main parts of the mounting structure of the slide stay 11 will be explained based on FIGS. 4 and 5. In general, a molded product is provided with a draft taper in order to make it easier to remove the molded product from the mold. is normal. The present invention utilizes a taper formed on the inner wall surface of the fitting holes 18, 18a, 18b, and 18c of the slide stay 11.

That is, in the embodiment, the center line in the thickness direction of the slide stay 11 is taken as a parting line, and the fitting holes 18, 18a, 18b, 18c
It is molded into.

The fitting hole 18 of such a slide stay 11,
The top cover 12 that fits or slides into the fitting holes 18a, 18b, 18c and the shafts 12a, 13a on the sheet guide 13 side have triangular cross sections formed in the fitting holes 18, 18a, 18b, 18c on their peripheral walls. A V-shaped cross section corresponding to this is formed.

Moreover, the slide stay 11 has fitting holes 18, 18.
The upper cover 12 and the shafts 12a, 13a on the seat guide 13 side can be easily attached to the upper cover 12 and the shafts 12a, 13a on the seat guide 13 side to the a, 18b, 18c, and have sufficient elasticity to hold them, and triangular cross sections formed on the inner wall surfaces of the fitting holes 18, 18a, 18b, 18c. It has enough elasticity to go beyond the top of the shape.

In addition, in FIG. 1, 14 is the sheet guide 1.
3. It is a single sheet guide that can be slid left and right on the top and has appropriate friction.

Next, the action will be explained.

In the above structure, in order to prevent the slide stay 11 from coming off, conventionally, as shown in FIG.
The inner wall surface of c forms a taper angle B and is uniformly inclined toward the removal direction of the slide stay 11, whereas the cross sections of the shafts 1a and 3a are uniform, so that the inner wall surface of the slide stay 2 During operation, the slide stay 2 may come off from the shafts 1a, 3a.

However, in this embodiment, as shown in FIG.
Fitting holes 18, 18a, 1 on the slide stay 11 side
A triangular cross section having an apex at the parting line is formed as a taper on the inner peripheral surface of the sheet guide 13 and the upper cover 12.
Since a V-shaped cross section corresponding to the triangular cross section is formed on the peripheral wall surface of the shafts 13a, 12a on the side, the V-shaped cross section on the side of the shafts 12a, 13a is in close contact with the triangular cross section on the slide stay 11 side. , and the distal end side has a tapered shape that widens toward the distal end. For this reason, slide stay 1
1 is prevented from moving in the withdrawal direction even during operation, and does not come off from the shafts 12a, 13a.

It should be noted that the present invention is not limited to the above-mentioned embodiments, and it goes without saying that various modifications can be made. For example, in this embodiment, the center line is the parting line, but the parting line is not limited to this and the position of the parting line can be specified arbitrarily. Further, the draft taper angle can also be arbitrarily specified.

[Effect of idea]

As is clear from the above description, according to the present invention, a triangular cross section having an apex at the parting line is formed as a taper on the inner wall surface of the fitting hole on the slide stay side, and the seat guide and top cover side are Since the circumferential wall surface of the shaft has a V-shaped cross section corresponding to the triangular cross section, the seat guide and the shaft on the top cover side can be fitted or slid into the fitting hole on the slide stay side. When operating,
This provides the effect of avoiding a situation where the slide stay comes off from the top cover or the shaft on the seat guide side.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the slide stay mounting structure of the present invention, Fig. 2 is a front view showing a conventional example, Fig. 3 is a cross-sectional view taken from Fig. FIG. 5 is a front view showing details of the slide stay mounting structure, and FIG. 5 is a cross-sectional view taken from FIG. 4. 11...Slide stay, 12...Top cover, 12a...Shaft, 13...Seat guide, 13a...Shaft, 18, 18a...Elongated hole, 18c...Notch hole.

Claims (1)

[Claim for Utility Model Registration] The sheet guide is rotatably attached to the Atsupa cover and the slide stay installed interposed between the Atsupa cover allows the sheet guide to be used as a backrest when using single sheets, or as a backrest when using continuous paper. In the slide stay mounting structure that is fixed as a feed guide during use, a triangular cross section with an apex at the parting line is formed as a taper on the inner wall surface of the fitting hole on the slide stay side, and the shaft on the seat guide and the top cover side A slide stay mounting structure characterized in that a V-shaped cross section corresponding to the triangular cross section is formed on the peripheral wall surface of the slide stay mounting structure.