JP2013140421A - Electrostatic input pen - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electrostatic input pen capable of not only performing input into a capacitive input device but also writing on a paper surface by a writing body, and capable of switching between the input and the writing without changing a grip of a shaft cylinder back and forth.SOLUTION: A shaft cylinder 2 comprises: a front shaft 3 obtained by forming a grip part 3a and a tip mouth part integrally with each other by conductive rubber; and a rear shaft arranged behind the front shaft 3. A writing body 8 is housed in the shaft cylinder 2 so as to be able to be advanced and retracted by a feeding mechanism. In a state where the writing body 8 is housed in the shaft cylinder 2, input into an operation area 10a of an input device 10 by the tip mouth part 3b of the front shaft 3 is enabled, and in a state where a tip 8a of writing of the writing body 8 is made to protrude from a tip opening 3c formed in the tip mouth part 3b, input on a paper surface by the tip 8a of writing of the writing body 8 is enabled.

Description

  The present invention relates to an electrostatic input pen used in a capacitive input device that allows selection or movement of a cursor by touching an operation area with a tip of an input pen.

  Conventionally, as described in Patent Document 1, there is known an electrostatic input pen in which a tip tip made of conductive rubber is provided at a front portion. Also, recently, as described in Patent Document 2, a thin touch panel type input device that is used by hand is gaining popularity in the market, and not only performs input with a fingertip but also a writing instrument. There is also a growing demand for an electrostatic input pen that can hold a shaft member for input.

  In addition, in such an electrostatic input pen, a tip end made of conductive rubber is provided on one end side of the shaft tube, and a writing body such as a ballpoint pen is provided on the other end side, to the input device. There is an input pen with a structure that can write not only on the screen but also on paper. However, in the input pen structure with a conventional cursive body, the tip and the cursive body exist separately on the front and back of the shaft tube, so it is inconvenient to change the front and back of the shaft tube when using both. In addition, a cap is attached to the writing tip so that the writing tip of a ballpoint pen or the like protrudes and there is no danger, or the surroundings are not soiled, and there is a problem that the cap must be detached and attached at the time of use.

  Patent Document 3 describes a structure in which a grip having a tip as a touch pen is attached to the front of a mechanical pencil. In this structure, the touch pen and the mechanical pencil are selectively used without changing the front and rear of the barrel. However, since the grip for the touch pen is further stacked on the outside of the shaft of the mechanical pencil, the appearance of the touch pen deteriorates and the position of the center of gravity changes, so that the balance of the shaft tube is lost and the writing feeling is lost. There is a risk of damage. Further, the structure of Patent Document 3 is not configured to be used for a capacitance type input device, and its use is for a pressure-sensitive touch panel.

Japanese Patent No. 4142276 JP 2011-81825 A Japanese Patent No. 3398679

  The present invention solves the above-mentioned conventional problems, and can perform not only input to a capacitance type input device but also writing on a paper surface with a cursive body, and appropriate use of input and writing. It is an object of the present invention to provide an electrostatic input pen that can perform the above operation without changing the front and rear of the shaft cylinder.

“1. An electrostatic input pen used in an input device that operates an operation area with an input pen or a finger and detects a position of an operation portion of the operation area by a capacitance method, and a shaft cylinder is connected to a grip portion A front shaft integrally formed with conductive rubber with a front opening portion, and a rear shaft disposed behind the front shaft, and a writing body is accommodated in the shaft cylinder so as to be able to appear and retract by a feeding mechanism, In a state where the writing body is housed in the shaft cylinder, it is possible to input to the operation area of the input device by the front opening portion of the front shaft, and the writing front end of the writing body protrudes from the front end opening formed in the front opening portion. An electrostatic input pen having a structure that enables writing on the paper surface with the writing tip in a state where the writing is performed.
2. The outer shape of the front opening is formed in a curved shape and a space is formed inward of the front opening, and the front opening is elastic when the front opening is brought into contact with the input area of the input device. 2. The electrostatic input pen as described in 1 above, wherein the electrostatic input pen is configured to be deformed and brought into surface contact.
3. In the state where the inner front end having a holding hole for holding the outer side surface of the cursive body is provided on the inner side of the front end portion, the cursive body is projected from the tip opening of the front end portion, and the writing is performed. 3. The electrostatic input pen according to 2 above, wherein the writing body is held by the inner front end portion and used as a steady rest.
4). 4. The electrostatic input pen according to any one of items 1 to 3, having a structure in which a coating film in which a solid lubricant is diffused in a binder is provided on a surface of the front shaft. Is.

  The writing body in the present invention is a ball-point refill, a mechanical pencil unit, a solid core, a marker, or the like, and a ball-point refill or a mechanical pencil unit containing oil-based ink or gel ink is preferable because the inside of the shaft cylinder communicates with the outside. In addition, in most of the recent capacitance type input devices, the input reaction is shown when the contact area is 16 square millimeters or more. However, the thickness of the tip portion formed of conductive rubber is reduced. By setting the hardness low, the front opening can be easily crushed toward the inner space, and the contact area between the front opening and the input device can be increased even with a small load. Specifically, it is preferable to form the tip portion in a dome shape with a thickness of 0.3 mm to 0.75 mm using a conductive rubber having a rubber hardness of 10 to 30 determined according to JIS-K6253: 2006. If the thickness is too thin, it is easily deformed but easily broken. If the thickness is too thick, it is difficult to break but difficult to deform. Further, the inner front opening can be provided at the front portion of the inner shaft disposed inside the front shaft. It is important to note that when the cursive body is held by a tip that is easily deformed, the cursive body will be applied to the inner front end provided inside the front end. By making it contact, it is making it the structure which can hold | maintain this cursive. Therefore, the inner tip is preferably made of a hard material. As the coating film provided on the front shaft surface, a coating agent in which a solid lubricant such as molybdenum disulfide, polytetrafluoroethylene, graphite, or boron nitride is contained in a binder is suitable.

  In the electrostatic input pen of the present invention, in the state where the grip portion formed integrally with the front end portion is held with conductive rubber, the input is simply performed by bringing the front end portion into contact with the capacitance type input device. Rather than being able to perform writing on the paper with the writing tip protruding from the tip of the cursive body, it is possible to use input and writing properly without changing the front and back of the shaft tube Thus, since the grip portion is made of rubber, the finger is difficult to slip and the writing feeling is good. Further, by providing a space portion inward of the front end portion so that it can be elastically deformed, the front end portion easily comes into contact with the operation area of the input device. Further, by providing the inner front end inward of the front end portion, the cursive body can be firmly held by the inner front end rather than holding the cursive body by the front end portion which is easily deformed.

FIG. 1 is a diagram illustrating an electrostatic input pen according to the present embodiment. FIG. 2 is a diagram illustrating a state before the front shaft is attached to the electrostatic input pen. FIG. 3 is a longitudinal sectional view of the state of FIG. FIG. 4 is a diagram illustrating a state where an input is performed to the capacitance type input device. FIG. 5 is a partially enlarged cross-sectional view showing a state where input is being performed. FIG. 6 is a diagram showing a state in which the writing tip is protruded. FIG. 7 is a longitudinal sectional view of the state of FIG. FIG. 8 is a diagram illustrating a state in which writing is performed on a paper surface.

  Embodiments of an electrostatic input pen according to the present invention will be described below with reference to the drawings. In addition, in order to make explanation easy to understand, the same number is attached | subjected about the same member and the same part in drawing. In the description of the present embodiment, the pen tip side is expressed as front and the opposite side is expressed as rear. Further, in this embodiment, the writing body is projected and retracted by using a rotary cam mechanism which is a well-known structure in the knock type ballpoint pen, but the drawing mechanism of the writing body is not particularly limited, and other knock type feeding is performed. It is possible to appropriately select the mechanism and the rotation feeding mechanism.

  The electrostatic input pen according to the present invention will be described with reference to FIGS. The shaft cylinder 2 of the electrostatic input pen 1 according to the present embodiment includes a front shaft 3 in which a grip portion 3a and a front end portion 3b are integrally formed of conductive rubber, and a rear shaft 4 disposed behind the front shaft 3. And an inner shaft 5 having an inner front opening 5a in front of the rear shaft 4 is screwed together, and the front shaft 3 is bonded to the outer peripheral surface of the inner shaft 5 and mounted. The front shaft 3 of the present embodiment is made of conductive rubber obtained by kneading carbon powder with silicon rubber having a rubber hardness of 20 obtained according to JIS-K6253: 2006, and the leading end 3b has a dome shape with a thickness of 0. .5mm. In this embodiment, the outer diameter of the inner shaft 5 is smaller than the outer diameter of the rear shaft 4, and the front shaft 3 and the rear shaft 4 are externally viewed with the front shaft 3 mounted on the inner shaft 5. It was set as the structure where a simple connection matched. Note that a coating film (not shown) in which polytetrafluoroethylene is contained in a binder is provided on the surface of the front shaft 3.

  Further, the electrostatic input pen 1 of this embodiment has a knock body 6 protruding from the rear opening 4 a of the rear shaft 4, and a cam groove 4 b is formed on the inner surface of the rear shaft 4 so that the front of the knock body 6 is formed. The sliding projection 6a formed on the side surface of the rotating cam 7 is slidably arranged, and the rear small-diameter portion 7a of the rotary cam 7 is slidably inserted in the front-rear direction inside the recess 6b formed with an opening below the knock body 6. The engaging projection 7b is formed on the side surface of the rotating cam 7 so as to be slidable with respect to the cam groove 4b. A ball pen refill 8 that contacts the rotating cam 7 by rotating the rotating cam 7 by sliding the rotating cam 7 by engaging the engagement portion formed on the rotating cam 7 with the engaging portion. The writing tip 8a is advanced against the elastic force of the coil spring 9, and the inner 5 is inserted into the holding hole 5b formed in the inner front end 5a of the front shaft 3 to maintain the state of protruding from the front end opening 3c formed in the front end 3b of the front shaft 3, and the knock body 6 is knocked again to operate the coil. The writing tip 8 a can be immersed in the tip opening 3 c by the elastic force of the spring 9.

  Next, a state in which an input operation is performed on an input device that is detected by a capacitance method using the electrostatic input pen of the present embodiment will be described with reference to FIGS. 4 and 5. As shown in FIG. 4, when the tip 3b of the electrostatic input pen 1 is brought into contact with the operation area 10a of the input device 10 and slid, the operation is performed from the grip 3a held by the user through the tip 3b. An electrostatic change was generated in the region 10a, and a line 10b could be drawn on the screen of the image creation software. At this time, as shown in FIG. 5, the front opening 3b made of conductive rubber is elastically deformed toward the space K formed between the front opening 3b and the inner front opening 5a and faces the operation region 10a. Contacted. In addition, when the front-end | tip part 3b is pressed too much on the operation area | region 10a, since the inner front-end | tip 5a shape | molded with the hard resin suppresses a deformation | transformation of the front-end | tip part 3b from the inside, it will damage the writing front-end | tip 8a. Can be prevented.

  next. A state in which writing is performed on the paper surface with the electrostatic input pen of this embodiment will be described with reference to FIGS. As shown in FIGS. 6 and 7, by knocking the knock body 6, the writing tip 8a protrudes from the tip opening 3c of the tip 3b, and the character 11a is written on the paper 11 as shown in FIG. I was able to. The ballpoint pen refill of this example contains thermochromic ink that disappears when heat is applied, and frictional heat is generated by rubbing the letters 11a, which are handwriting, with the friction body 12 made of an elastic material. The character 11a could be erased.

  The electrostatic input pen of the present invention is provided in a notebook because the structure is simple because the tip part for inputting to the capacitance type input device and the grip part to be gripped by the user are formed integrally. It is possible to make the outer diameter small enough to be inserted into the pen holder, and it is possible to make it convenient for the user who carries the input device and the notebook.

1 ... Electrostatic input pen,
2 ... shaft tube,
3 ... front shaft, 3a ... gripping part, 3b ... tip opening part, 3c ... tip opening,
4 ... rear shaft, 4a ... rear opening, 4b ... cam groove,
5 ... Inner shaft, 5a ... Inner tip, 5b ... Holding hole,
K ... space part,
6 ... Knock body, 6a ... Sliding projection, 6b ... Recess,
7 ... Rotating cam, 7a ... Small rear diameter part, 7b ... Locking protrusion,
8 ... ballpoint pen refill, 8a ... writing tip,
9 ... Coil spring,
10 ... input device, 10a ... operation area, 10b ... line,
11 ... paper, 11a ... characters,
12 ... friction body.

Claims (4)

An electrostatic input pen used in an input device that operates an operation area with an input pen or a finger and detects a position of an operation portion of the operation area by a capacitance method, wherein a shaft cylinder includes a gripping portion and a front end portion And a rear shaft arranged behind the front shaft, and a writing body is accommodated in the shaft cylinder so as to be able to appear and retract by a feeding mechanism. In the state accommodated in the shaft cylinder, it is possible to input to the operation area of the input device by the front opening portion of the front shaft, and the writing tip of the writing body is protruded from the front end opening formed in the front opening portion The electrostatic input pen having a structure that enables writing on the paper surface by the writing tip. The outer shape of the front opening is formed in a curved shape and a space is formed inward of the front opening, and the front opening is elastic when the front opening is brought into contact with the input area of the input device. The electrostatic input pen according to claim 1, wherein the electrostatic input pen is configured to deform and come into surface contact. In the state where the inner front end having a holding hole for holding the outer side surface of the cursive body is provided on the inner side of the front end portion, the cursive body is projected from the tip opening of the front end portion, and the writing is performed. The electrostatic input pen according to claim 2, wherein the writing body is held by the inner front end portion to be used as a steady rest. The electrostatic input pen according to any one of claims 1 to 3, wherein a coating film in which a solid lubricant is diffused in a binder is provided on a surface of the front shaft.

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