JPH04132995U - Automatic drawing machine pen - Google Patents

Abstract

(57) [Summary] [Structure] This is a pen for an automatic drafting machine that is attached to the main body of a device such as a plotter via an adapter B, and the vicinity of the pen tip 9 of the pen tip holder 10 is made of an injection molded product of synthetic resin. This part is used as a press-fitting part 7 into the adapter B, and grooves 8 that become larger toward the pen tip 9 side are provided radially in this press-fitting part 7. [Effect] Press-fitting into the adapter becomes stable, and bends can be sufficiently corrected.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

A pen for automatic drawing machines that is attached to the main body of a device such as a plotter via an adapter. The present invention relates to a pen nib holder having a press-fitting portion into an adapter near the nib.

0002

[Conventional technology]

Some pens for automatic drafting machines are specifically designed for automatic drafting machines, but many are suitable for automatic drafting machines. It is not exclusive to dynamic drafting machines, but can also be used for handwriting using a scriber, for example. It is possible to do so. Therefore, the main body of the device must be connected via an adapter. There are many things that can now be attached.

0003 The adapter also allows for better positioning of the pen relative to the body of the device. Immediately In order to satisfy the above-mentioned handwriting performance, the area near the nib of the pen nib holder must be Although the part will be quite long, it is not possible to make it by injection of synthetic resin, which is the usual manufacturing method. If such a part is formed by extrusion molding, bending will inevitably occur, and this should be avoided. If you do not correct the Good positioning of the adapter relative to the adapter and positioning of the pen relative to this adapter. This indirectly improves the positioning of the pen relative to the main body of the device. ing.

0004 To do this, of course, the pen must be properly positioned and attached to the adapter. is necessary, and the part of the pen nib holder near the nib is used as the press-fit part into the adapter. This is the most common method.

[0005]

[Problem that the idea aims to solve]

The area near the pen tip of the pen nib holder not only bends, but also has a constant diameter. It becomes something that does not exist. The above can be achieved by using this part as a press-fit part into the adapter. Even if we try to correct it, there is inevitably a limit, so we decided to increase the inner diameter of the press-fit adapter. If you set it too finely, there will be some parts that cannot be corrected due to insufficient press-fit, and the parts will also be smaller. If this setting is made, some items may not be able to be press-fitted.

[0006]

[Means to solve the problem]

Grooves that become larger toward the pen tip are provided radially on the peripheral wall of the press-fitting part. That is, the present invention , an automatic drafting machine pen that is attached to the main body of the device via an adapter, and is made of synthetic resin. The pen nib holder is made of an injection molded product and has a press-fit part into the adapter near the nib. , the peripheral wall of the press-fitting part is provided with grooves that become larger toward the pen tip in a radial manner. This article focuses on a pen for automatic drafting machines that is characterized by:

[0007]

[Effect]

Due to the groove provided on the peripheral wall, the press-fit part is more likely to bend toward the pen tip for correction. In addition to this, it also exhibits elasticity to stabilize the pressing force.

[0008]

【Example】

In attached figure 1, pen A screws the two front and rear stepped portions 1 and 2 of adapter B together. The front member 3 and the rear member 4 are engaged with each other to prevent back and forth movement. Reference sign 5 indicates a flange for attachment to the main body of the device.

[0009] The part of pen A that protrudes linearly from step 1 is press-fitted into mouth part 6 of adapter B. A groove 8 is provided in the peripheral wall of this press-fitting part 7.

0010 As shown in Figures 2 and 3, the grooves 8 are deeper toward the nib 9 side, and four grooves are provided radially. ing. Also, although it is formed longer than the opening 6 of the adapter B that is press-fitted, this In this way, it also serves as an air exchange path.

[0011] The member having the groove 8 is the pen nib holder 10, and is made of polyethylene or polypropylene. Is it an injection molded product of appropriate synthetic resin such as nylon, polyacetal, ABS resin, etc. It will be. In the figure, it is assumed to be press-fitted into the shaft cylinder 11, but it is integral with the shaft cylinder 11. It may be any suitable one. In addition, in the diagram, a self-elastic needle is used as the pen tip 9. Although the nib of a small tube type writing instrument consisting of a body 12 and a small tube 13 is shown, it is also possible to use a ballpoint pen nib. Any other suitable one may be used. Further, reference numeral 14 indicates an ink relay core, but the pen A may be an appropriate type such as a so-called raw ink type or a batting type.

0012 Another example is shown in FIGS. 4 and 5. The groove 8 provided in the pen nib holder 10 is on the nib 9 side. The width is wider. It is the same as the previous one in that it is larger towards the nib side. It's like that. Also, as an example showing that the number of grooves 8 provided radially is appropriate. The number of grooves 8 in the figure is three.

[0013] In addition to the above, various other things can be done. For example, it can be attached to an adapter without moving back and forth by screwing it together. It can also be used as a pen.

[0014]

[Effect of the idea]

The automatic drafting machine pen of this invention is an automatic drafting machine that is attached to the main body of the device via an adapter. A pen for drawing machines, near the nib of a nib holder made of injection molded synthetic resin. For those that have a press-fitting part to the adapter next to them, there is a part on the pen tip side on the peripheral wall of the press-fitting part. Since grooves are provided in a radial pattern that increases in size, it is possible to stably press fit into the adapter. Moreover, the bend can be sufficiently corrected by the adapter.

[Brief explanation of drawings]

FIG. 1 is a side view with a cross section of an adapter showing an embodiment of the present invention.

FIG. 2 is an enlarged longitudinal sectional view of the tip of the pen shown in FIG. 1;

FIG. 3 is a cross-sectional view taken along line II in FIG. 2;

FIG. 4 is a perspective view of main parts showing another example of the present invention.

FIG. 5 is a cross-sectional view of the pen of FIG. 4 corresponding to FIG. 2;

[Explanation of symbols]

A pen 1 step part 2 step part 7 Press fit part 8 Groove 9 Pen tip 10 Pen tip holder 11 Shaft tube 12 Needle body 13 tubule 14 Ink relay core B Adapter 3 Front member 4 Rear member 5 Tsubabe 6 Mouth

Claims (1)

[Scope of utility model registration request] Claim 1. A pen for an automatic drawing machine that is attached to the main body of the device via an adapter, which has a pen nib holder made of an injection molded synthetic resin and has a press-fitted part into the adapter near the nib. A pen for an automatic drafting machine, characterized in that a peripheral wall of the press-fitting part is provided with grooves radially extending toward the pen tip side.