JPH10222281A - Input pen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the input pen which has an input member smoothly slidable on a panel, never flaws the panel and enables comfortable input operation with a writing feeling by forming the soft input member from fluoric rubber with a low coefficient of friction. SOLUTION: The input part 1A of the soft input member 1 is made nearly conical and its tip 1B with a proper curved surface is formed. Further, the soft input member 1 is formed from fluoric rubber. This soft input member 1 is fitted to an end part of a shaft cylinder 2 made of synthetic resin or metal by press-in fixation or adhesion. Thus, the fluoric rubber with a small coefficient of friction is used to reduce the coefficient of friction of the soft input part 1, which can smoothly slide on the panel. Here, the size from the tip 1B of the soft input member 1 to the end surface of the shaft cylinder 2 is set to 3.0 to 8.0mm and then input operation is performed with a writing feeling of a brush or fountain pen.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an input pen used in a pressure-sensitive handwriting input device.

[0002]

2. Description of the Related Art Conventionally, an input pen provided with an input member made of an elastic material such as rubber at an end of a shaft cylinder has been used for the purpose of preventing a panel from being damaged.

[0003]

However, the conventional input pen has a large friction coefficient of the input member, so that there is no problem when performing a pointing input, but when performing a writing-like input of sliding on a panel. In addition, the input member does not easily slide on the panel, thereby damaging the panel and making the input operation very difficult. An object of the present invention is to provide an input pen that solves the above-mentioned problems.

[0004]

According to the present invention, a soft input member is provided at an end of a barrel, and the soft input member is made of fluoro rubber. As described above, by using the fluororubber having a low friction coefficient, the friction coefficient of the soft input member is reduced, and the soft input member can smoothly slide on the panel. Therefore, there is no danger of damaging the panel, and a writing-like input operation can be performed comfortably.

[0005]

FIG. 1 shows a first embodiment of the present invention.
The input portion 1A of the soft input member 1 is formed in a substantially conical shape, and its tip 1B is formed in an appropriate curved surface. Further, the soft input member 1 is made of fluoro rubber. This soft input member 1
Is attached to the end of the shaft cylinder 2 made of synthetic resin or metal by press-fitting or bonding. The soft input member may be formed by insert molding at the end of the barrel.

FIG. 2 shows a second embodiment of the present invention, in which a front cap fitting portion 1 having a ridge at a front portion of a barrel 12 is shown.
Form 2A. Further, the front cap fitting portion 1 of the barrel 12
The soft input member 1 is attached to the fixed portion 12B located in front of 2A.
1 is fixed by insert molding. The soft input member 11 is made of fluoro rubber. A rear shaft 3 made of synthetic resin or metal is screwed into a rear portion of the shaft cylinder 12, and a rear cap fitting portion 3A having a ridge is formed on the rear shaft 3. A ballpoint pen 4 is built in the barrel 12 and the rear shaft 3, and a spring 5 is stretched between a projection 4A of the ballpoint pen 4 and an inner step 3B of the rear shaft 3, and the ballpoint pen 4 is urged forward in the longitudinal direction. Then, the rear end of the ballpoint pen 4 is inserted into the front fixing hole 12 </ b> C of the barrel 12, and the writing tip 4 </ b> B of the ballpoint pen 4 appropriately protrudes from the tip opening 3 </ b> C of the rear shaft 3. Further, a cap 7 having a clip 6 is detachably attached to the rear cap fitting portion 3A of the rear shaft 3, and covers the writing tip 4B of the ballpoint pen 4.

The input pen of the second embodiment is used in the state shown in FIG. 2 when inputting on the panel, but when the ball-point pen 4 is used, the rear cap fitting portion 3A is used.
The cap 7 is further removed, and the cap 7 is attached to the front cap fitting portion 12A, and writing is performed in the state shown in FIG.

FIG. 4 and FIG. 5 show a third embodiment of the present invention, wherein a synthetic resin or metal shaft cylinder 22 having a non-slip groove formed in a grip portion 22D is provided with a hole at the front. 22E
Is formed, and the rear portion 8A of the front input member 8 is press-fitted and fixed to the hole 22E. Although not shown, the front input member may be attached to the front of the barrel while being urged forward by a spring. The front input member 8 is made of a synthetic resin such as polyacetal, polyethylene, or nylon, and the input portion 8B is formed in a substantially conical shape, and its tip has a radius of curvature of 0.5 mm.
It is formed with a curved surface of not less than 1.2 mm. The rear end of the barrel 22 has a small diameter, and a projection 22G is formed on the surface of the small diameter portion 22F. The projection 22G is inclined so as to have a smaller diameter toward the rear. The soft input member 21 is press-fitted and fixed to the small-diameter portion 22F of the barrel 22. The soft input member 21 is made of fluoro rubber. Although not shown, the soft input member may be attached to the barrel by bonding or insert molding. A protruding portion 21C protruding in the longitudinal direction is formed on a part of the soft input member 21 in the circumferential direction to prevent the input pen from rolling. A non-slip projection 21D is formed on the raised portion 21C. A plurality of projections 21E extending in the circumferential direction are formed on the soft input member 21, and the projections 21E come into frictional contact with the inner surface of the input pen storage portion of the input device main body, so that the input pen is securely stored.
Further, the input portion 21A provided on the soft input member 21 has a substantially conical shape, and the tip 21B has a curved surface with a radius of curvature of 1.0 mm or more and 4.0 mm or less.

In the case of the third embodiment, when the input pen stored in the input device main body is removed, the raised portion 21C of the soft input member 21 protruding from the storage portion is operated and removed with a finger. The input pen can be removed. In addition, since the raised portion 21C is formed with the non-slip protrusion 21D, the finger can be reliably operated without slipping. Further, an input portion 21A for performing an input operation on the panel, a raised portion 21C for preventing rolling of the input pen, and a projection 21E for making frictional contact with the inner surface of the input pen storage portion of the input device main body are formed of a soft input member 21 as one component. It can be formed.

Further, as shown in FIG. 6, the input pen of the present invention has a tip 31B of a soft input member 31 made of fluoro rubber.
If the dimension L from the to the end surface of the shaft cylinder 2 to which the soft input member 31 is attached is set to be 3.0 mm or more and 8.0 mm or less, the input operation can be performed like a writing brush or a fountain pen, A thick line or a thin line can be freely input. That is, the dimension L is 3.0 mm
When the length is shorter, a writing feeling like a writing brush or a fountain pen is not obtained, and when the dimension L is longer than 8.0 mm, an experimental result is obtained that a thin line cannot be input.

Further, the present invention is not limited to the above-described embodiment, and two or more parts such as a shaft cylinder and a rear shaft may be integrated by screwing, press-fitting, bonding or the like.

[0012]

The input pen of the present invention described above is characterized in that the soft input member is made of fluoro rubber having a low friction coefficient. As a result, the soft input member can smoothly slide on the panel, and there is no danger of damaging the panel, and an effect of performing a writing-like input operation comfortably can be obtained.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an input pen according to a first embodiment of the present invention.

FIG. 2 is a sectional view showing an input pen according to a second embodiment of the present invention.

FIG. 3 is a partial cross-sectional view illustrating a use state of a ballpoint pen in an input pen according to a second embodiment.

FIG. 4 is a sectional view showing an input pen according to a third embodiment of the present invention.

FIG. 5 is a plan view of FIG. 4;

FIG. 6 is an enlarged sectional view of a main part showing a soft input member and a shaft cylinder in the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Soft input member 1B Tip of soft input member 1 2 Shaft 11 Soft input member 12 Shaft 21 Soft input member 21B Tip of soft input member 21 22 Shaft tube 31 Soft input member 31B Tip of soft input member 31

Claims (2)

[Claims] 1. An input pen used in a pressure-sensitive handwriting input device, wherein a soft input member is provided at an end of a barrel, and the soft input member is made of fluorine rubber. 2. The input pen according to claim 1, wherein the dimension from the distal end of the soft input member to the end surface of the barrel is not less than 3.0 mm and not more than 8.0 mm.