JPH0452075Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Field of Application of the Invention] The present invention relates to a pen holder cap that is useful when a ready-made pen is attached to the pen holder portion of a drawing machine.

[Background technology and problems]

As an example of a drawing machine, as shown in FIG. 1, a movable rail 4 is supported so as to be able to reciprocate along fixed rails 2 and 3 disposed on the left and right side edges of a drawing board 1, for example. A pen holder 5 is disposed so as to be movable and vertically movable along the pen holder 4, and a drawing pen 6 attached to the pen holder 5 can draw on the drawing board 1. The moving rail 4 and the pen holder 5 are driven by motors (not shown), and these motors are controlled by, for example, a microcomputer. Further, the drawing pen 6 is detachably held in the pen holder 5 so that drawing can be performed in a variety of colors, or it can be used interchangeably depending on the thickness of the pen tip. Furthermore, in order to easily obtain and use the various types of pens mentioned above, it is common practice to use ready-made pens.

By the way, the shapes of the pen heads and shafts of off-the-shelf pens vary depending on the manufacturer and type, which can cause the pen to become unstable when attached to the pen holder or cause the pen tip to shift. Ta.

For example, conventionally, as shown in FIG. 2, a ready-made drawing pen 6 has a grip shaft (not shown) removed and a pen head 9 having a pen tip 7 protruding from the tip and an ink magazine 8 at the base end. , and is used to attach a holder cap 10.
The cap 10 has a male thread for inserting the magazine 8 into a female threaded hole 12 threaded through the base end of the cylindrical body 11 and screwing the grip shaft part threaded onto the base of the magazine. 13 and is assembled and fixed. However, since the fixing point between the cap 10 and the pen head 9 is constituted by the female screw hole 12 and the male screw 13, it is located at a distance from the position of the pen tip 7, so it is difficult to attach and detach the pen. There was a risk that the pen tip 7 would be misaligned during the writing process.

[Purpose of invention]

The present invention has been devised in view of the above-mentioned conventional situation, and aims to provide a stable mounting state when a ready-made pen is mounted in a pen holder of a drawing machine.

[Structure of the idea]

The pen holder cap of the drawing machine of the present invention has a movable rail movably disposed along a fixed rail disposed on one side edge of the drawing board, a pen head movably disposed along this movable rail, A spare pen stand is arranged on the side of the drawing board so that the pen held in the pen head can be moved to any position on the drawing board and can land and float on the drawing board surface. In the drawing machine, the pen has a main body formed into a cylindrical shape into which the pen head can fit, and a pen shaft insertion hole at the base end and an engaging stepped part that engages with the base of the pen head. The present invention is characterized in that a cap body is fitted and fixed, and the outer shape of the cap body is shaped so that it can be attached to and detached from the pen head and spare pen stand.

〔Example〕

Next, one embodiment of the present invention will be described with reference to the illustrated example.

First, FIG. 3 is a vertical sectional view of the cap body 20 of the present invention, FIG. 4 is a vertical sectional view of the rubber ring 30 assembled to the main body 20, and FIG. 5 is a vertical sectional view of the rubber ring 30 attached to the pen head 9. FIG.

That is, the cap body 20 is made of ABS, for example.
It is molded from a plastic material such as resin, and in the illustrated example, the overall shape is approximately cylindrical. The inner hole 21 of the main body 20 constitutes a fitting part with the pen head 9, and is therefore formed to a hole diameter that can fit the outer periphery of the pen head 9. A stepped portion 22 is formed, and an insertion hole 23 for inserting the magazine 8 of the pen head 9 is opened. The stepped portion 22 is the proximal stepped portion 9 of the pen head 9.
1, and the insertion hole 23 is formed in a diameter that allows a male threaded shaft portion 13 formed at the neck portion of the pen head 9 for attaching a shaft (not shown) to be inserted therethrough. There is. Furthermore, the inner cavity portion 2
At the other end of 1, that is, on the lower end side in FIG.
is formed with the stepped portion 25 as a boundary, and this large diameter portion 24
An engaging portion 26 for engaging the flange portion 31 of the rubber ring 30 is formed at the open end portion of the rubber ring 30 . Also,
In the case of the illustrated example, the outer periphery of the main body 20 is provided with first and second flange portions 27 so as to be able to fit and hold the pen engaging and holding portion 51 provided on the pen holder 5 of the drawing machine. , 28 are provided protrudingly, and the remaining outer peripheral shape is formed into a columnar shape.

Next, after the main body 20 is fitted to the pen head 9, the rubber ring 30 is fitted and press-fitted into the large-diameter portion 24 and is press-fitted between the outer periphery near the tip of the pen head 9 and the pen head 9. This is for fixing and supporting the head 9 at a portion near the pen tip 7. In the case of the illustrated example, as is clear from FIG. 4, the ring 30 has a slightly thicker cylindrical portion 32 on the upper end side in the figure, which can fit into the larger diameter portion 24. However, a flange portion 31 that is fitted and locked within the engaging portion 26 is provided protruding from the outer periphery of the lower end in the figure. In addition, on the inner periphery of this ring 30, a part near the upper end of the cylindrical part 32 in the figure becomes a thin hole-shaped part 33, and the inner peripheral surface 33 of this part becomes a thin hole-shaped part 33.
A is a pressure contact portion with the outer circumferential wall of the pen head 9 near the tip. Further, the lower part of the thin hole-like portion 33 in the figure becomes a wide hole-like portion 34, and is designed to maintain a gap 40 between it and the outer periphery of the tip of the pen head 9, as shown in FIG. The gap 40 allows the air hole 92 formed in the peripheral wall of the pen head 9 to escape, and the hole 92 is not blocked by the rubber ring 30, so that ink does not flow out even when the cap of the present invention is attached. It is designed to be carried out reliably.

Therefore, the cap body 20 and the rubber ring 3 are
0 to the pen head 9, the rubber ring 30 is removed from the cap body 20, and the magazine 8 of the pen head 9 is inserted into the inner cavity 21 of the cap body 20. Insert the proximal step 91 of the pen head 9 into the cap body 2.
0 step part 22. Next, the cylindrical portion 32 of the rubber ring 30 is fitted into the large diameter portion 24 of the cap body 20 from the pen tip 7 side, and
By press-fitting and assembling the cap body 20 and the pen head 9 between their outer peripheries, the cap body 20 and the pen head 9 are firmly integrated.

In the assembled state, the cap body 20 is firmly fixed by the stepped portion 22 and the rubber cap 30 at two locations, one near the tip and the other near the base end of the pen head 9. Moreover, this fixed body can be easily realized by finally fitting and press-fitting the rubber ring 30 as described above. Furthermore, since the rubber ring 30 is press-fitted between the cap body 20 and the pen head 9 near the tip of the pen head 9 near the nib 7, it is possible to sufficiently prevent the pen nib 7 from shifting. This allows for highly reliable drawing.

[Effects of the Invention] According to the present invention, when a ready-made pen is used in the pen head of a drawing machine, a stable holding state can be obtained, and the intended purpose can be fully achieved.

[Brief explanation of the drawing]

Figure 1 is a schematic plan view showing an example of a drawing machine, Figure 2
The figure is a vertical cross-sectional view of the main part showing a conventional example, FIG. 3 is a vertical cross-sectional view of the cap main body showing an embodiment of the present invention, and FIG.
This figure is a longitudinal cross-sectional view of the rubber ring, and FIG. 5 is a longitudinal cross-sectional view of the main part of the rubber ring assembled into a pen. 6... Pen, 7... Pen tip, 8... Ink magazine, 9... Pen head, 20... Cap body,
21...Inner hole part, 22...Step part, 23...Through hole, 24...Large diameter part, 25...Step part, 26...Engaging part, 27, 28...Flange part, 30... ...Rubber ring, 31...Engagement flange portion, 32...Cylindrical portion.

Claims (1)

[Scope of utility model registration request] A movable rail is movably arranged along a fixed rail arranged on one side edge of the drawing board, a pen head is movably arranged along this movable rail, and a spare pen is placed on the side of the drawing board. In a drawing machine that is provided with a stand so that the pen held in the pen head can be moved to any position on the drawing board and can land on and float up on the drawing board surface,
The pen has a main body formed into a cylindrical shape into which a pen head can fit, and a cap body having a pen shaft insertion hole and an engaging stepped part that engages with the base of the pen head at the base end. A pen holder cap for a drawing machine, further characterized in that the outer shape of the cap body is such that it can be attached to and detached from the pen head and the spare pen stand.