JPH0356393Y2 - - Google Patents

Description

[Detailed Description of the Invention] Industrial Application Field The present invention relates to a writing device for an automatic drafting machine.

Prior Art As shown in Japanese Utility Model Publication No. 59-13107, a writing instrument lead holder is attached to a cassette case attached to a cursor that is moved in the front, rear, right and left directions, and is moved up and down by a predetermined distance, and is biased upward. A mechanism is provided above the cassette case to move up and down a core pusher that pushes and moves the pencil lead inserted into the lead holder. A writing device is known in which a holder is pushed down and at the same time a pencil lead is made to protrude from the lead holder and pressed against a drawing paper, and a cursor is moved back and forth and left and right to draw on the drawing paper.

Problems that the invention aims to solve: Since the pencil lead is pressed down with the push rod, the lead of the pencil tends to break, making the operation of the writing instrument unreliable.

As writing instruments, only special ones with a pencil lead inserted into a lead holder can be used; regular ballpoint pens and pencils cannot be used directly.

The structure is very complicated because the lead holder is moved upward by a spring and a mechanism is provided to move the pencil lead up and down.

Means and operation for solving the problem A cover body having a driven roller is detachably attached to a main body having a driving roller, and the driven roller is biased toward the driving roller with an elastic member, so that the driving roller and the driven roller are separated. The writing instrument can be moved up and down with respect to the main body by holding the writing instrument between the rollers and rotating the drive roller forward and backward.

Embodiment Upper and lower rollers 4 and 5 provided on one side of the main body 3 of the writing device are in contact with the upper and lower surfaces 2a and 2b of the guide rail 2 provided on the drawing machine main body 1, and the main body 3 reciprocates along the guide rail 2. It has become freely possible.

A cover body 6 is rotatably attached to the other side of the main body 3 with a sheep 7 and fixed with bolts 8 to form a space 9 between the other side surface 6a of the cover body 6 and the inner surface 3a of the main body 3. In addition, a writing instrument 10 is disposed in this space 9 so as to be vertically movable, and a drive roller 11 and a guide roller 12 are provided above and below on the other side of the main body 3.
The writing instrument 10 protrudes into the space 9 from the inner surface 3a.
It is in contact with the outer surface 10a of one side.

Inside the cover body 6, an upper rod 14 having a driven roller 13 and a lower rod 16 having a guide roller 15 are swingably supported on a pivot shaft 17.
The upper rod 14 and the lower rod 16 are the upper and lower springs 1.
The upper and lower locking pieces 2 are biased to swing by 8 and 19, and the upper and lower protruding pieces 20 and 21 are integrally formed on the upper and lower sides of the cover body 6.
2 and 23, and when the cover body 6 is fixed to the main body 3, the driven roller 13 and the guide roller 15 are pressed against the other side outer surface 10b of the writing instrument 10, and the upper and lower protrusions 20 and 21 are vertically locked. pieces 22, 23
It is designed to be separated from the

As shown in FIG. 4 or 5, the driving roller 11 and the guide roller 12 have V-shaped or arc-shaped holding grooves 11a and 12a formed on their outer peripheral surfaces, so that they can be reliably maintained even if the diameter of the writing instrument 10 is different. The drive roller 11 is connected to a motor (not shown). Note that the driven roller 13 and the guide roller 15 may have the same shape as the drive roller 11 described above.

A recording paper 24 is provided below the main body 3 so as to be fed by a recording paper feeding device 25 in a direction perpendicular to the moving direction of the main body 3.

The writing instrument 10 is a sharp pen, and a stopper 26 is provided on the main body 3, facing the push rod 10c for feeding out the lead.

By rotating the drive roller 11 forward and backward, the writing instrument 10 can be moved up and down relative to the main body 3. By pressing the writing instrument 10 against the recording paper 24 and moving the main body 3 and the recording paper 24 in a direction perpendicular to each other, the recording paper 24 can be moved vertically. In addition to being able to draw on the
The lead can be fed out by pressing c against the stopper 26.

Further, since the driven roller 13 and the guide roller 15 are always urged toward the drive roller 11 by the upper and lower springs 18 and 19, the writing instrument 10 can be held securely by each roller, and the drive roller 11
It can be moved up and down reliably.

Further, by rotating the cover body 6 about the hinge 7, the driven roller 13 and the guide roller 15 can be separated from the writing instrument 10, so that the writing instrument 10 can be easily replaced.
0 and 21 come into contact with the upper and lower locking pieces 22 and 23 of the cover body 6, so that the driven roller 13 and the guide roller 15 can be held on the cover body 6, and when the cover body 6 is closed again, the writing instrument 10 can be held.

Note that the cover body 6 may be detachably attached to the main body 3 with bolts.

To hold the writing instrument 10, the driven roller 13 may be pressed against the writing instrument 10 by a spring 18 at an intermediate position between the drive roller 11 and the guide roller 12, as shown in FIG. 6, or as shown in FIG. The driving roller 11 may be pressed against the writing instrument 10 at an intermediate position between the driven roller 13 and the guide roller 15, or the writing instrument 10 may be held by a plurality of driven rollers and guide rollers.

That is, the writing instrument 10 may be held in pressure contact with the driving roller 11 by the driven roller and the guide roller, and can be moved up and down.

Effect of the invention By rotating the drive roller 11 forward and backward, the writing instrument 1
0 can be moved up and down with respect to the main body 3, the writing instrument 10 can be operated reliably, and even a general ballpoint pen or pencil can be used as a writing instrument.

Further, the structure is simple because the main body 3 is provided with the drive roller 11, the cover body 6 is provided with a driven roller, and the cover body 6 is urged by an elastic member.

Furthermore, when the cover body 6 is removed from the main body 3, the driving roller 11 and the driven roller 13 are separated, and the writing instrument 10 held between these two rollers can be easily removed. When the cover body 6 is attached to the main body 3 by positioning the writing instrument 10, the writing instrument 10 is elastically held between both rollers and the setting of the writing instrument is easily completed, so that attachment/detachment and replacement of the writing instrument 10 are extremely easy.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a partially cutaway front view, Fig. 2 is a cross-sectional view taken along the line - - in Fig. 1, Fig. 3 is an explanatory diagram of the attachment part of the driven roller and guide roller, and Fig. 4 is a partially cutaway front view. 5 are sectional views of the drive roller and guide roller, and FIGS. 6 and 7 are front views showing other embodiments of the writing instrument holding structure. 3 is a main body, 10 is a writing instrument, and 11 is a drive roller.

Claims (1)

[Scope of utility model registration request] A main body 3 on which a driving roller 11 is rotatably provided and is movable in a predetermined direction;
1 and a cover body 6 on which a driven roller 13 is attached facing each other at a predetermined distance. A writing device for an automatic drafting machine, characterized in that a writing instrument 10 is elastically held between a roller 13.