JPH0524992Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a stylus pen for a coordinate input device, and particularly to a stylus pen for a coordinate input device with good operability.

[Conventional technology]

Stylus pens for inputting coordinates use a pen core as a switch, but there are also stylus pens with a finger switch that have a switch for operation separate from the pen core. In this case, a point on the drawing is indicated by the pen nib switch, which uses the nib as a lever to open and close (ON, OFF) the switch. The user also specifies the content of the point specified by the finger switch, such as an instruction to cancel the point that has just been input or an instruction for the line type.
FIG. 6 is a side view of the stylus pen with a finger switch among the stylus pens described above.

The conventional stylus pen with a finger switch shown in FIG. 6 includes a case 1, a pen core 2, a finger switch lever 3, a cable 4, a control printed circuit board 5, a nib cap 6, etc. It is configured.

The external shape of the case 1 is cylindrical. In addition, the pressure surface 3a of the finger switch lever 3
is parallel to case 1. Note that the angle β
is the angle between the straight line connecting the tip of the pen core 2 and the tip of the nib cap 6 and the center line O of the stylus pen with a finger switch.

[The problem that the idea aims to solve]

In the conventional stylus pen with a finger switch, when you hold it like a normal pen and press the pen core 2 against the digitizing surface, the case 1 is simply formed in a cylindrical shape, so your finger will not touch the case 1. Easy to slip.

Further, since the pressure surface 3a of the finger switch lever 3 is formed parallel to the case 1, the finger easily slips when operating the finger switch lever 3.

In addition, in conventional stylus pens with a finger switch, the strength of the return spring of the pen core switch and the return spring of the finger switch lever 3 are almost the same, so when the pen core 2 is placed on the digitizing surface, the strength of the return spring of the finger switch lever 3 is almost the same. There is a problem where the pen nib switch is turned on by mistake when you press .

The purpose of the present invention is to solve the problems of the prior art described above, and to prevent the fingers from slipping against the case when the pen nib is pressed against the digitizing surface, and to provide good operability of the finger switch lever. To provide a stylus pen with a finger switch that can prevent malfunctions such as accidentally turning on a pen core switch when operating the switch.

[Means to solve the problem]

The above purpose is to expand the vicinity of the finger switch, which is the gripping part of the case, toward the pen tip, and to form the pressure surface of the finger switch lever into a shape that gradually increases in the direction of the pen tip, thereby increasing the operating pressure of the pen nib switch. This is achieved by setting the pressure higher than the operating pressure of the finger switch.

[Effect]

In this invention, the grip part of the case near the finger switch is expanded in the direction of the pen tip, so when you hold a stylus pen with a finger switch like a normal pen and press it against the digitizing surface, The pressure surface of the finger switch lever is shaped to gradually increase in height toward the pen tip, making it difficult for your fingers to slip when pressing the finger switch lever, making it easier to operate. can be improved.

Moreover, in this invention, the operating pressure of the pen nib switch is set higher than the operating pressure of the finger switch, for example, more than three times, so when the finger switch is operated, the pen nib moves and the pen nib switch is turned on. Malfunctions can be prevented.

〔Example〕

Figures 1 to 5 show one embodiment of the present invention. Figure 1 is a side view of the entire stylus pen with a finger switch, Figure 2 is an enlarged side view of the main parts, and Figure 3 is a side view of the stylus pen with a finger switch. Figure 4 is a bottom view, Figure 4 is a front view of Figure 2, and Figure 5 is a front view of Figure 2.
The figure is a vertical side view showing the internal mechanism.

The stylus pen with finger switch of the embodiment shown in these figures includes a case 11, a pen core 2, a finger switch lever 13, a cable 4, a control printed circuit board 5, a nib cap 16, and a pen core switch. 17, a finger switch 18, a return spring 19 for the pen core 2, and a finger switch lever 13.
It is configured to include a return spring 20 for use. In addition, the pen nib switch 17 and the finger switch 18
A magnetic switch is used, and is mounted on the control printed circuit board 5. And pen nib 2
When the magnets 21 placed on the finger switch levers 13 come to opposing positions, they turn on.

Finger switch 1 which is the grip part of the case 11
8, as shown in FIG. 3, there is provided a flat surface 11a that extends in the direction of the pen tip, and has a thick portion of 11 mm and a thin portion of 9.5 mm, for example. Furthermore, a knurling is formed on a part of the surface 11a, as shown in FIG.

The pressure surface 13a of the finger switch lever 13 is
As shown in FIG. 2, in the ON state it is parallel to the case 11, and in the OFF state it is formed in a shape that gradually becomes higher in the direction of the pen tip. In other words, the pressurizing surface 13a of the finger switch lever 13 is formed in a shape having an inclination of, for example, 15 degrees toward the pen tip in the OFF state.

As shown in FIG. 2, the pen nib cap 16 has two stages of dimensions of, for example, φ4, φ7, and φ11 at the tip, middle, and rear end, respectively, as shown in FIG. It is formed into a conical surface with steps. Furthermore, the tip of the pen tip cap 16 is chamfered, for example, with a 2R radius, as shown in FIG. The angle α between the straight line connecting the tip of the pen core 12 and the tip of the nib cap 16 and the center line of the stylus pen with a finger switch is calculated from the angle β in the prior art (see FIG. 6). It is also formed at a small angle.

The operating pressure of the pen core switch 17 is set to be greater than the operating pressure of the finger switch 18. That is, in this embodiment, the spring pressure of the return spring 19 for the pen core 2 is controlled by the finger switch lever 1.
Approximately 3 of the spring pressure of the return spring 20 for 3
For example, double the operating pressure of the pen nib switch 17.
120g, and the operating pressure of finger switch 18 is set to 40g.

The stylus pen with finger switch of the above embodiment operates as follows when used.

That is, the user grasps the grip part of the case 11 like a normal pen, aligns the tip of the pen core 2 with the digitizing position (not shown), and presses the pen core 2 against it.

At this time, in this embodiment, the grip portion of the case 11 is formed into a surface 11a that expands in the direction of the pen tip and is knurled, so that when pressing down the case 11, the grip part of the case 11 is prevented from slipping against the case 11. I can do it.

In addition, since the pressure surface 13a of the finger switch lever 13 is formed to be gradually higher in the direction of the pen tip, that is, to have an inclination of, for example, 15 degrees in the OFF state, when operating the finger switch lever 13, the finger may not slip. can be prevented.

Furthermore, when operating the finger switch lever 13 and only the finger switch 18 with the pen nib 2 at the reading position and the pen nib 2 not pressed down (pen nib switch OFF state), the pressure of the finger is Adds to pen nib 2. At this time, if the operating pressure of the pen core 2 is weak, the pen core 2 may move due to the pressure of the finger and the pen core switch 17 may be turned ON by mistake. On the other hand, in this embodiment, the spring pressure of the return spring 19 for the pen core switch is approximately three times the spring pressure of the return spring 20 for the finger switch, and the operating pressure of the pen core switch 17 is adjusted to the operating pressure of the finger switch 18. Since the pressure is set to about three times the pressure, it is possible to prevent the trouble of accidentally turning on the pen nib switch 17 when operating the finger switch 18.

Moreover, the nib cap 16 is formed into a conical surface with two steps, and the tip is chamfered, and the tip of the pen core 2 and the nib cap 1 are
Since the angle α between the straight line connecting the tip of 6 and the center line O of the pen core 2 is made small, the field of view on the digitizing surface is widened, making it easier to see the coordinate reading position. can.

In this embodiment, the spring pressure of the spring 19 is about three times the spring pressure of the spring 20, but there is no problem in practical use if it is twice or more. Further, although the surface 11a is a flat surface, it may be a curved surface. Furthermore, it goes without saying that it is also possible to extend the pen tip toward the pen tip without providing a step, as shown by the two-dot chain line in FIG.

[Effect of idea]

According to the present invention explained above, since the grip part of the case is formed into a surface that expands in the direction of the pen tip,
When holding not only a stylus pen with a finger switch but also a stylus pen without a finger switch like a normal pen and pressing it against a digitizing surface, it is possible to prevent the finger from slipping against the case. Furthermore, since the pressure surface of the finger switch lever is formed in a shape that gradually increases in height toward the pen tip, the finger does not easily slip when pressing the finger switch lever, which has the effect of improving operability.

Moreover, according to the present invention, the operating pressure of the pen nib switch is set to be greater than the operating pressure of the finger switch, for example, three times or more, so when the finger switch is operated, the pen nib moves and the nib switch is turned on. This also has the effect of preventing malfunctions that would otherwise occur.

[Brief explanation of the drawing]

Figures 1 to 5 show one embodiment of the present invention. Figure 1 is a side view of the entire stylus pen with a finger switch, Figure 2 is an enlarged side view of the main parts, and Figure 3 is a side view of the stylus pen with a finger switch. Figure 4 is a bottom view, Figure 4 is a front view of Figure 2, and Figure 5 is a front view of Figure 2.
The figure is a vertical side view showing the internal mechanism, and FIG. 6 is a side view of a conventional stylus pen with a finger switch. 2... Pen core, 1, 11... Case, 11a...
...Grip part of case, 13...Finger switch lever, 13a...Pressure surface of finger switch lever, 16
...Nib cap, 17...Pen nib switch,
18...Finger switch, 19...Return spring for pen nib switch, 20...Return spring for finger switch.

Claims (1)

[Scope of utility model claims] It is equipped with a pen nib switch that is used to indicate a point on a drawing and whose operating direction is in the axial direction of the case, and a finger switch that is used to indicate the contents of the indicated point and whose operating direction is in the radial direction of the case. In the stylus pen, the grip part of the case is formed to widen in the direction of the pen tip, and the pressure surface of the finger switch lever is formed in a shape that gradually becomes higher in the direction of the pen tip,
A stylus pen characterized by setting the operating pressure of a pen core switch to at least twice the operating pressure of a finger switch.