JPS604766Y2 - Support device for the running rail against the platen support - Google Patents

Description

[Detailed Description of the Invention] Technical Field This invention relates to a support device for a traveling rail for a platen support molded from synthetic resin.

BACKGROUND ART Generally, when a platen support is movably supported on a carriage rail, a steel ball is interposed between the platen support and the carriage rail to facilitate the movement of the platen support.

Therefore, even if the platen support is made of synthetic resin,
It is necessary to provide a metal traveling rail in the portion of the platen support where the steel balls roll.

In other words, there is a risk of wear when using synthetic resin.

Purpose of the invention The purpose of the invention is to provide a traveling rail support device that has a simple structure and is extremely easy to mold and assemble.

EXAMPLE Hereinafter, an example embodying this invention will be described with reference to the drawings.A carriage rail 1 made of a metal plate is fixed to the rear of the body of a typewriter so as to extend in the left and right direction. Its front and rear edges are bent upward, and a rail portion 2 is formed at its upper end, which is bent outward to have a triangular cross section.

A platen support 3 integrally formed of synthetic resin is supported on the carriage rail 1 so as to be movable left and right, and a platen 5 is rotatably supported in a recess 4 formed in the front upper part of the support.

At the upper end of the rear wall 6 of the recess 4, an oblique upper guide surface 7 that descends toward the platen 5 is formed.

A lower guide plate 9 is fixed between both side walls 8 of the recess 4 so as to be continuous with the lower part of the upper guide surface 7 and extend forward along the lower surface of the platen 5. A guide roller 12 that contacts the surface of the platen 5 through a through hole 11 is supported between both side walls 8.

These upper guide surface 7, lower guide plate 9 and guide roller 1
2 forms a guide portion 13 for guiding the printing paper from the rear of the platen 5 to the front side.

A presser roller 14 is provided at the upper front position of the platen 5 to pull out the printing paper upward.

Front and rear receiving portions 15 and 16 are integrally formed on the lower surface of the front end of the platen support 3 and extend parallel to each other in the left-right direction, and a large number of reinforcing ribs 17 are integrally formed on the front surface of the front receiving portion 15 at equal intervals. In addition, a large number of reinforcing ribs 18 are integrally formed on the rear surface of the rear receiving portion 16 and extend integrally from the rear surface of the rear wall 6.

Those reinforcing ribs 17. ．． Horizontal V-shaped mounting recesses 19 are respectively formed in 1B so as to open in opposite directions.

Moreover, as shown in FIGS. 2 and 3, both the receiving portions 15,
A fixed block portion 20 is integrally formed on one side end of 16,
The block portion 20 has a mounting groove 21 that opens downward,
An insertion groove 22 is formed that communicates between the attachment groove 21 and the outer surface.

Metal running rails 23 having a horizontal V-shaped cross section are fitted into the front and rear mounting recesses 19, respectively, and a flat plate portion 24 formed at one end of the rails is fitted into the mounting groove 21 of the fixed block portion 20. It is fixed to both receiving portions 15.16 by stepped screws 25 passing through insertion grooves 22.

A spring 26 is stretched between the other ends of both running rails 23, and presses both running rails 23 against the inner surface of the mounting recess 19.

Then, both traveling rails 23 and the carriage rail 1
A steel ball 27 is interposed between the carriage rail 1 and the rail portion 2, and the platen support 3 is supported by the carriage rail 1 on this traveling rail 23 so as to be able to move left and right.

Although not shown, in the rail portion 2 of the carriage rail 1 and the V-shaped bent portion of the running rail 23, a large number of small through holes are continuously formed on the left and right to facilitate bending. .

Therefore, in order to assemble the traveling rail 23 to the platen support 3, both traveling rails 23 are fitted into the front and rear mounting recesses 19, one end of which is fitted into the mounting groove 21 of the fixed block part 20, and a step is formed. It is only necessary to fix it with screws 25 and tension the spring 26 between the other ends, and its structure and assembly are extremely simple.

Effects of the invention As illustrated in the examples, this invention integrally forms the platen support with synthetic resin, fixes one end of each of the two running rails to the platen support, and fixes the other ends of both running rails to the platen support. By connecting the ends using a biasing means,
The assembly of two running rails to the platen support can be completed, the structure is extremely simple, and the excellent effect of easily assembling the running rails is exhibited.

[Brief explanation of the drawing]

FIG. 1 is a side sectional view showing the platen support, FIG. 2 is a bottom view of the platen support, and FIG. 3 is a cutaway perspective view showing the mounting structure of the traveling rail. Platen support...3, Platen...
5, Guide section...13, Front receiver section...15
, Rear receiving part...16, Mounting recess...19
, Fixed block part...20, Traveling rail...
...23, Stepped screw...25, Spring...26°

Claims (1)

[Claims for Utility Model Registration] A pair of side walls 8.8 rotatably supporting the platen 5;
At least a part of the guide section 13 that guides the printing paper to the front surface of the platen;
A platen integrally formed with a pair of receiving portions 15 and 16 extending in the longitudinal direction of the platen 5, in which recessed portions 19 that open in opposite directions are formed to accommodate the running rails 23 of the strips, respectively. A support body 3, fixing means 20, 25, etc. for fixing one end of each of the two running rails 23 to the platen support body 3, and the other ends of the running rails 23 are connected to each other, and both running rails are connected to each other. 1. A support device for a running rail for a platen support body, characterized in that it comprises: a biasing member 26 that biases the platen support member 23 so as to press the support portion 23 against the respective receiving portions 15 and 16;