JP2012128486A - Input pen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an input pen that allows a tip 1 to be electrically continuous with a user's hand holding the input pen and allows the tip 1 to be securely attached to a fixing member 2.SOLUTION: An input pen is used for an input device whose operation area is operated by the input pen or a finger, and which detects the position of an operation portion in the operation area by a change in quantity of electricity accompanying a capacitance change to input the position of the operation portion. A tip 1 of the input pen is composed of conductive rubber, and a cylindrical portion of the tip is provided with a recess portion 1A. The tip 1 is inserted into a fixing member 2 and an inner protrusion portion 2C formed on the fixing member 2 is engaged with the recess portion 1A of the tip 1 to attach the tip 1 to the fixing member 2. The fixing member 2 is provided in a front portion of a shaft cylinder 3 having conductivity, whereby a hand holding the shaft cylinder 3 can be electrically continuous with the tip 1.

Description

  The present invention relates to an input pen used in an input device that can smoothly move a cursor by detecting a position based on a change in electric quantity accompanying a change in capacitance by gently tracing an operation area with a tip of the input pen.

  2. Description of the Related Art Conventionally, an input pen provided with a tip tip made of conductive rubber at the front is known. (See Patent Document 1)

  However, since the input pen is configured by attaching the tip to the shaft cylinder or by attaching the core member to which the tip tip is attached to the shaft cylinder, there is a problem that the tip may be detached.

Japanese Patent No. 4142276

  The problem to be solved is that if the tip having elasticity is press-fitted and attached to the core member or the shaft tube, the tip is easily detached.

  The present invention relates to an input pen used in an input device that operates an operation area with an input pen or a finger, detects the position of the operation part of the operation area by a change in electric quantity accompanying a change in capacitance, and inputs the position of the operation part A recess is formed in the cylindrical portion of the tip of the tip made of conductive rubber, the tip is inserted into the fixing member, and the inward protrusion formed on the fixing member is engaged with the recess of the tip to fix. The main feature is that the tip is attached to the member, and the fixing member is provided in the front part of the conductive shaft tube so that the hand holding the shaft tube can be connected to the tip tip.

  The present invention provides the advantage that the tip is securely attached to the fixing member and is not likely to come off.

1 is a cross-sectional view illustrating an input pen according to a first embodiment of the present invention. Example 1 FIG. 2 is a cross-sectional view showing the tip of the input pen and the fixing member of FIG. Example 1 FIG. 3 is a cross-sectional view showing the tip and the fixing member of the input pen according to the second embodiment of the present invention. (Example 2) FIG. 4 is a cross-sectional view illustrating the input pen according to the third embodiment of the present invention. (Example 3) FIG. 5 is a cross-sectional view showing the tip of the input pen, the fixing member and the tip of the input pen shown in FIG. (Example 3) FIG. 6 is a cross-sectional view showing the tip, fixing member, and tip of Example 4 of the present invention. Example 4 FIG. 7 is a cross-sectional view of the main part showing an input pen according to a fifth embodiment of the present invention. (Example 5) FIG. 8 is a cross-sectional view of the main part showing an input pen according to a sixth embodiment of the present invention. (Example 6) FIG. 9 is a cross-sectional view illustrating an input pen according to a seventh embodiment of the present invention. (Example 7)

  It can be configured to be electrically conductive from the tip to the hand holding the shaft tube, and can be used for an input pen that can be securely attached to the fixing member.

  Hereinafter, the input pen according to the first embodiment of the present invention will be described with reference to FIGS. 1 and 2. Moreover, let the left side of FIG. 1 be the front, and let the right side be back. The tip of the tip 1 made of conductive rubber is formed in a semicircular shape, and a circumferential recess 1A is formed in the cylindrical portion of the tip 1. A lubricious coating agent is applied to the distal tip 1 to improve the sliding of the distal tip 1. As a lubricious coating agent, a rubber grade of the trade name (α coat) of Acros Co., Ltd. is used, and is applied to a film thickness of 15 μm by spraying, tumbling, dipping, dip spin, etc., and then cured by heating. The fixing member 2 is made of a metal having conductivity, and forms an outer collar 2A at the front portion and an inner collar 2B at the rear end of the cylindrical portion. The distal tip 1 is inserted into the fixing member 2 from the front, and the cylindrical portion is crimped from the outside to form the inward protruding portion 2C. The inward projecting portion 2C is engaged with the recess 1A of the tip 1 to securely fix the tip 1 as shown in FIG. 2, and the tip of the tip 1 protrudes from the fixing member 2. The fixing member 2 is press-fitted and fixed to the front portion of the shaft tube 3 made of a conductive metal such as stainless steel. A clip 4 is attached to the rear portion of the shaft tube 3 and a tail plug 5 is fixed to the rear end of the shaft tube 3 to constitute an input pen.

  If the shaft cylinder 3 of the input pen is held by hand, the hand and the tip 1 are electrically connected via the fixing member 2. Therefore, the tip 1 is maintained at the same potential as the hand of the user holding the shaft 3 of the input pen.

  When the tip 1 of the input pen is lightly pressed against the operation area of the input device, the tip of the tip 1 is deformed to obtain a predetermined contact area, and there is no contact between the operation part and the user's hand. A capacitance depending on the area is formed. The position is detected based on the change in the amount of electricity accompanying the change in capacitance, and the position where the tip 1 is in contact is input.

  Hereinafter, the tip 1 and the fixing member 12 of the input pen according to the second embodiment of the present invention will be described with reference to FIG. In addition, the same member as FIG. 1 attaches | subjects the same code | symbol, and abbreviate | omits the description. The inward protrusion 12C of the fixing member 12 is formed such that the front end is an inclined surface and the rear end is a vertical surface. The distal tip 1 is inserted into the fixing member 12 from the front, the concave portion 1A of the distal tip 1 is engaged with the inward protrusion 12C of the fixing member 12, and the distal tip 1 is securely fixed to the fixing member 12, and the distal tip The tip of the chip 1 protrudes from the fixing member 12.

  Hereinafter, an input pen according to a third embodiment of the present invention will be described with reference to FIGS. 4 and 5. In addition, the same member as FIG. 1 attaches | subjects the same code | symbol, and abbreviate | omits the description. The fixing member 22 is made of a conductive metal, and the front portion 22D is formed in a cylindrical shape, and the outer flange 22E and the inner flange 22B are formed at the rear portion. The distal end tip 11 is inserted into the fixing member 22 from the front, and the front portion 22D is caulked from the outside to form the inward protruding portion 22C. The inward projection 22C is engaged with the recess 11A of the tip 11 to securely fix the tip 11 to the fixing member 22. A lubricious coating agent is applied to the tip 11 to improve the sliding of the tip 11. As a lubricious coating agent, a rubber grade of the trade name (α coat) of Acros Co., Ltd. is used, and is applied to a film thickness of 15 μm by spraying, tumbling, dipping, dip spin, etc., and then cured by heating. Further, the fixing member 22 is inserted from behind the conductive tip 6, and the outer flange 22E of the fixing member 22 is press-fitted and attached to the inner surface of the tip 6, as shown in FIG. The tip of 11 is appropriately protruded from the tip 6. The shaft cylinder includes a rear shaft 7 made of non-conductive synthetic resin, and a rubber grip 8 made of conductive rubber placed on a grip portion of the rear shaft 7. The tail plug 15 is press-fitted and fixed to the rear portion of the rear shaft 7, and the tip 6 is detachably screwed to the front portion of the rear shaft 7, and the rear end of the tip 6 is brought into contact with the front end of the rubber grip 8. Configure the input pen.

  If the rubber grip 8 constituting the shaft of the input pen is held by hand, the hand and the tip 11 are electrically connected via the fixing member 22 and the tip 6. Therefore, the tip 11 is maintained at the same potential as the hand of the user holding the shaft of the input pen.

  If the tip 11 of the input pen is lightly pressed against the operation area of the input device, the tip of the tip 11 is deformed to obtain a predetermined contact area, and there is no contact between the operation portion and the user's hand. A capacitance depending on the area is formed. The position is detected by the change in the amount of electricity accompanying the change in capacitance, and the position where the tip 11 is in contact is input.

  Hereinafter, the tip 11, the fixing member 32, and the tip 6 of the input pen according to the fourth embodiment of the present invention will be described with reference to FIG. 6. The same members as those in FIG. 4 are denoted by the same reference numerals, and the description thereof is omitted. The inward protrusion 32C of the fixing member 32 is formed with an inclined front surface and a vertical surface at the rear end. The tip 11 is inserted into the fixing member 32 from the front, and the recess 11A of the tip 11 is engaged with the inward protrusion 32C of the fixing member 32, so that the tip 11 is securely fixed to the fixing member 32. Further, the fixing member 32 is inserted from the rear side of the tip 6, and the outer flange 32 E of the fixing member 32 is press-fitted and attached to the inner surface of the tip 6, and the tip of the tip 11 is attached as shown in FIG. It is configured to protrude appropriately from the tip 6.

  Hereinafter, an input pen according to a fifth embodiment of the present invention will be described with reference to FIG. The tip of the tip 21 made of conductive rubber is formed in a semicircular shape, and the tip 21 is formed hollow with a rear end opened. A circumferential recess 21 </ b> A is formed in the cylindrical portion of the tip 21. Further, a lubricious coating agent is applied to the tip 21 to improve the sliding of the tip 11. As a lubricious coating agent, a rubber grade of the trade name (α coat) of Acros Co., Ltd. is used, and is applied to a film thickness of 15 μm by spraying, tumbling, dipping, dip spin, etc., and then cured by heating. The fixing member 42 is made of a conductive metal and forms an outer casing 42A at the front. The inward projection 42C of the fixing member 42 is formed with an inclined front surface and a vertical surface at the rear end. The tip 21 is inserted into the fixing member 42 from the front, and the recess 21A of the tip 21 is engaged with the inward protrusion 42C of the fixing member 42. Next, two outer casings 9B each having a front end inclined surface and a rear end formed into a vertical surface are formed in the front cylinder portion 9A of the core member 9 and the rear cylinder portion 9C of the core member 9 is formed as a front cylinder. The diameter is larger than that of the portion 9A. The front cylindrical portion 9A of the core member 9 is inserted from the rear of the tip 21 and the rear cylindrical portion 9C is press-fitted and fixed to the cylindrical portion of the fixing member 42. The fixing member 42 is press-fitted and fixed to the front portion of the shaft tube 3 made of a conductive metal such as stainless steel to constitute an input pen.

  In the case of the fifth embodiment, the tip 21 is easily bent, and the tip 21 is securely attached to the fixing member 42 without coming off.

  Hereinafter, an input pen according to a sixth embodiment of the present invention will be described with reference to FIG. In addition, the same member as FIG. 7 attaches | subjects the same code | symbol, and abbreviate | omits the description. After the tip 21 and the core member 9 are attached to the fixing member 42, the filler 10 softer than the tip 21 is inserted into the tip 21 and the core 9.

  In addition, as the filler 10, gel-like silicon that forms a gel at normal temperature has excellent cushioning properties, and in particular, trade name [silicone potting material Sylgard 527] or [silicone rubber DOW CORING TORAY SH 9555 WHITE] is preferred.

  Hereinafter, an input pen according to a seventh embodiment of the present invention will be described with reference to FIG. In addition, the same member as FIG. 1 attaches | subjects the same code | symbol, and abbreviate | omits the description. A tail plug 15 is fixed to the rear end of the shaft tube 3, and a ballpoint pen refill 16 is detachably attached to the tail plug 15. The writing portion 16A of the ballpoint pen refill 16 protrudes appropriately from the rear end of the tail plug 15, and a cap 17 is detachably fitted to the ballpoint pen refill 16 to cover the writing portion 16A to constitute an input pen.

  If the input pen is reversed during the input operation, writing such as a memo can be performed on paper.

  The present invention is not limited to the above-described embodiments, and the shaft tube can be integrally formed by screwing, press-fitting, or bonding a plurality of members. The conductive rubber is constituted by putting a large amount of a conductive agent such as carbon black or metal in natural rubber, nitrile rubber, silicon rubber or the like, but it is preferable to use a relatively soft conductive rubber. Further, slipping is improved by applying a lubricating coating agent to the tip, but input by the tip can be sufficiently performed without applying the lubricant coating.

  The present invention can be applied to an input pen in which the user's hand holding the tip and the input pen is maintained at the same potential, and the tip is securely attached to the fixing member.

DESCRIPTION OF SYMBOLS 1 Tip tip 1A Concave part of tip part 1 2 Fixing member 2C Inward protrusion part of fixing member 2 3 Shaft cylinder 11 Tip part 11A Concave part of tip part 11 12 Fixing member 12C Inward protrusion part of fixing member 12 21 Tip part 21A Tip Recessed portion of chip 21 22 Fixing member 22C Inward protruding portion of fixing member 22 Fixing member 32C Inward protruding portion of fixing member 32 42 Fixing member 42C Inward protruding portion of fixing member 42

Claims (1)

  Conductive rubber in an input pen used in an input device that operates an operation area with an input pen or a finger, detects the position of the operation part of the operation area by a change in electric quantity accompanying a change in capacitance, and inputs the position of the operation part A recess is formed in the cylindrical portion of the tip of the tip, and the tip is inserted into the fixing member, and an inward protrusion formed on the fixing member is engaged with the recess of the tip to fix the tip to the fixing member. The input pen is further provided with a fixing member provided at the front portion of the conductive shaft tube so that the hand holding the shaft tube can be electrically connected to the tip.

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