WO2020235342A1 - 電子ペン用芯体及び電子ペン - Google Patents

電子ペン用芯体及び電子ペン Download PDF

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Publication number
WO2020235342A1
WO2020235342A1 PCT/JP2020/018482 JP2020018482W WO2020235342A1 WO 2020235342 A1 WO2020235342 A1 WO 2020235342A1 JP 2020018482 W JP2020018482 W JP 2020018482W WO 2020235342 A1 WO2020235342 A1 WO 2020235342A1
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WO
WIPO (PCT)
Prior art keywords
tip
core
component
axial
electronic pen
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/JP2020/018482
Other languages
English (en)
French (fr)
Japanese (ja)
Inventor
良二 神山
利彦 堀江
雅充 伊藤
大介 渡邊
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Wacom Co Ltd
Original Assignee
Wacom Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Wacom Co Ltd filed Critical Wacom Co Ltd
Priority to CN202080036723.0A priority Critical patent/CN113853572B/zh
Priority to JP2021520693A priority patent/JP7514826B2/ja
Publication of WO2020235342A1 publication Critical patent/WO2020235342A1/ja
Priority to US17/513,775 priority patent/US11573649B2/en
Anticipated expiration legal-status Critical
Priority to US18/066,236 priority patent/US11714498B2/en
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of two-dimensional [2D] relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03545—Pens or stylus
    • G06F3/03546—Pens or stylus using a rotatable ball at the tip as position detecting member
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of two-dimensional [2D] relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03545—Pens or stylus
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/046—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by electromagnetic means

Definitions

  • the present invention relates to a core body for an electronic pen and an electronic pen.
  • the writing quality of an electronic pen is determined by the balance between the material of the pen tip (core) and the material of the side that receives input from the electronic pen (the surface of the display screen of the mobile terminal).
  • core material of the pen tip
  • POM Polyoxymethylene
  • the tip of the core made of hard resin and the glass surface the tip of the electronic pen is slippery on the glass surface, and it is difficult to accurately position the predetermined position with the electronic pen. It was. Therefore, core bodies made of various materials have been tried, and among them, the core body made of felt is highly evaluated as being soft and having a good writing quality on the glass surface. Therefore, it is conceivable to use a core body made of felt for an electronic pen, and it has been partially realized.
  • Felt is a bundle of synthetic fibers hardened with an adhesive or the like.
  • the core made of felt is originally intended for writing stationery, which sucks ink from a tank that stores ink by capillarity and writes with ink, and the strength of the core is a problem. However, the strength of the core made of felt is low.
  • the electronic pen is provided with a pen pressure detection unit, and the pen pressure detection unit is configured so that the pen pressure applied to the tip of the core can be accurately detected. Is. Therefore, the core body needs to have a strength capable of accurately transmitting the writing pressure applied to the tip portion thereof to the writing pressure detecting portion.
  • the core body made of felt since the core body made of felt has low strength, when pressure is applied in the axial direction thereof, the core body is bent or the fibers are scattered, and the pressure applied to the tip is applied. Is difficult to be transmitted to the other end side. Therefore, conventionally, it has been necessary to use a core made of a felt material that is thick enough to maintain the strength, and it has been very difficult to make the core made of felt thinner.
  • the core made of felt has low durability when writing, it is necessary to configure it so that it can be replaced. Therefore, the core body is configured so that it can be inserted and removed from the fitting portion directly with respect to the pen pressure detecting portion or the fitting portion with the pressure transmitting member (push member).
  • the core body in order to transmit the writing pressure to the writing pressure detecting portion as accurately as possible, it is important that the core body is firmly fitted to the fitting portion.
  • felt is a bundle of fibers, so it was difficult to fit it firmly in the fitting part.
  • the core body moves in the axial direction according to the applied writing pressure, and the writing pressure is applied to the writing pressure detecting part. introduce.
  • the side opposite to the tip of the core is fitted into the fitting portion through a through hole formed in the magnetic core around which the coil is wound. The core body moves in the through hole of the magnetic body core.
  • the core body made of felt is a bundle of fibers, its side peripheral surface becomes slightly fluffy. Therefore, when the core body made of felt moves in the axial direction, the fluff on the side peripheral surface comes into contact with the inner peripheral surface of the through hole of the magnetic core, and the pen pressure detection portion is exposed to the pen pressure detection portion from the core body. There was a risk that the pressure would not be transmitted accurately.
  • the core body made of felt is a bundle of fibers, it is difficult to accurately process the length and thickness in the axial direction to the predetermined values due to its softness and fluffing. There was also the problem of large dimensional tolerances.
  • felt as a material that is soft and has a good writing quality on the glass surface, for example, there is an elastic material such as an elastomer, and a core body made of an elastic material such as an elastomer is also described above in terms of strength. It has the same problem as felt.
  • the thin electronic pen used in a small electronic device such as a mobile terminal cannot use the core of an elastic material such as felt or elastomer, and only a writing operation with poor writing quality can be obtained. It wasn't done.
  • An object of the present invention is to provide a core body for an electronic pen capable of solving the above problems.
  • a core body for an electronic pen that is composed of a tip component made of felt and a core component.
  • the axial component is made of a non-fiber member harder than felt, has a concave hole at least on one end side in the axial direction for connecting to the tip component, and is provided on the other end side in the axial direction.
  • the electronic pen is provided with a fitting portion for directly or indirectly fitting to the pen pressure detecting portion and transmitting the pen pressure to the pen pressure detecting portion.
  • a coupling core portion that is coupled while being inserted into the concave hole of the shaft core constituent portion is provided, and the coupling portion of the tip portion with the coupling core portion is the axial core constituent portion.
  • a core body for an electronic pen which has a second ring-shaped end face that abuts with a first ring-shaped end face around a concave hole on one end side in the axial direction of the above.
  • the core body for an electronic pen having the above-described configuration is configured by connecting a tip component made of felt and an axial core component made of a non-fiber member harder than felt.
  • the tip component portion has a coupling core portion and a tip portion, and the coupling core portion is coupled to the shaft core component portion in a state of being inserted into a concave hole of the shaft core component portion.
  • a second ring-shaped end surface that abuts with a first ring-shaped end surface around a concave hole on one end side in the axial direction of the axial center component at the joint portion of the tip portion of the tip component portion with the connecting core portion. Is formed. Therefore, the tip end portion of the felt is in a state of protruding outward from one end side in the axial center direction of the axial core constituent portion, and the second ring-shaped end surface is the first one on the one end side in the axial center direction of the axial core constituent portion.
  • the tip component and the axial component are connected in a state of being in contact with the ring-shaped end face.
  • a fitting portion for directly or indirectly fitting with the pen pressure detecting portion is provided on the other end side of the axial center component in the axial direction. That is, the direct or indirect fitting portion with the pen pressure detecting portion is not made of felt but is made of a non-fiber member harder than felt. Therefore, the direct fitting of the core body and the pen pressure detecting portion or the pressure transmitting member is made good.
  • the tip portion of the tip component portion of the core body is made of felt, so that the writing operation with good writing quality becomes possible.
  • the felt portion is only the tip portion protruding from the axial core constituent portion, and the axial core portion of the core body is made of a non-fiber member harder than the felt. It is composed of a shaft component. Therefore, in the core body for the electronic pen having the above configuration, the strength of the axial core constituent portion can be increased as compared with the case where the entire core body is made of felt, and the thickness of the axial core constituent portion can be increased. It can be made thinner.
  • the axial core constituent portion constitutes the axial core portion of the core body excluding the tip portion made of felt, and the thinning of the axial core constituent portion is directly linked to the thinning of the core body. Therefore, if the core body for the electronic pen having the above configuration is used as the core body of the electronic pen, the electronic pen can be made thinner.
  • the second ring-shaped end face of the tip configuration portion and the first ring-shaped end surface of the axial center component portion described above are applied.
  • the pen pressure is transmitted to the axial component through the abutting portion with the end face.
  • the fitting portion on the other end side in the axial direction of the axial core constituent portion of the electronic pen core having the above configuration is firmly attached directly or indirectly to the pen pressure detecting portion. Since the pen pressure is fitted, the pen pressure applied to the felt tip portion of the core body for the electronic pen having the above configuration is more accurately transmitted to the pen pressure detection unit.
  • the axial center component is made of a non-fiber member that is harder than felt, fluffing does not occur on the side peripheral surface thereof. Therefore, even when the axial center component is directly or indirectly fitted with, for example, the pen pressure detecting portion through which the through hole of the magnetic core is inserted, the applied pen pressure is accurately applied. It is transmitted to the pen pressure detection unit.
  • the axial core portion that occupies most of the core body is composed of the axial core component made of non-fiber members that are harder than felt, the length and thickness in the axial direction are accurately set to the default values. It is easy to process and the dimensional tolerance can be reduced.
  • the electronic pen core according to the present invention is an example of a case where a position is indicated by combining with a position detection device by an electromagnetic induction method.
  • FIG. 1 is a diagram showing a configuration example of an embodiment of an electronic pen using the embodiment of the core body for an electronic pen according to the present invention.
  • the electronic pen main body 3 is housed in the hollow portion 2a of the tubular housing 2, and the knock cam mechanism 4 brings the pen tip side of the electronic pen main body 3 to the housing 2. It has a knock-type configuration in which the pen is taken in and out from the opening 2b side at one end in the longitudinal direction of the pen.
  • the electronic pen main body 3 has a cartridge type configuration and is removable from the housing 2.
  • the electronic pen main body 3 includes the electronic pen core body (hereinafter, abbreviated as core body) 7 of the embodiment.
  • the core body 7 is removable from the electronic pen main body 3.
  • the housing 2 of the electronic pen 1 is made of a transparent synthetic resin, and the inside thereof can be seen through.
  • the electronic pen 1 of this embodiment is configured to be compatible with a commercially available knock-type ballpoint pen, and the housing 2 and the knock cam mechanism 4 provided in the housing 2 are well-known commercially available knock-type ballpoint pens.
  • the configuration is the same as that of the housing and the knock cam mechanism, and the dimensional relationship is also the same.
  • the knock cam mechanism unit 4 has a well-known configuration in which a cam main body 41, a knock rod 42, and a rotor 43 are combined.
  • the knock cam mechanism portion 4 locks the electronic pen main body portion 3 to the state of FIG. 1 (B) in the housing 2. , The pen tip side of the electronic pen main body 3 is in a state of protruding from the opening 2b of the housing 2. Then, when the end portion 42a of the knock rod 42 is pressed again from the state of FIG. 1B, the locked state is released by the knock cam mechanism portion 4, and the return spring 5 releases the casing of the electronic pen main body portion 3. The position in the body 2 returns to the state shown in FIG. 1 (A). Since the detailed configuration and operation of the knock cam mechanism unit 4 are well known, the description thereof will be omitted here.
  • FIG. 1C is a diagram showing a configuration example of the electronic pen main body 3.
  • FIG. 2 is a partially enlarged view for explaining the configuration of the electronic pen main body 3 on the pen tip side.
  • FIG. 3 is a diagram for explaining a configuration example of the core body 7 of the embodiment mounted on the electronic pen main body 3.
  • the magnetic core around which the coil 31 is wound in this example, the ferrite core 32 is coupled to the tubular body 33. .. Then, the core body 7 is inserted through a through hole of the ferrite core 32 (not shown in FIG. 1C), and as will be described later, a pen pressure detecting unit 6 provided in the tubular body unit 33. It is detachably fitted to (not shown in FIG. 1, see FIG. 2) and is provided as a part of the electronic pen main body 3. As shown in FIGS. 1 (C) and 2 (B), the end of the core 7 on the pen tip side protrudes from the ferrite core 32.
  • the winding position of the coil 31 in the ferrite core 32 is biased to the side opposite to the pen tip side, which is about 1/2 of the total length of the ferrite core 32.
  • the portion from the end of the ferrite core 32 on the pen tip side to one end of the coil winding portion is a non-winding portion in which the coil is not wound.
  • the pen pressure detecting unit 6 is provided in the vicinity of the coupling portion of the tubular body portion 33 with the ferrite core 32.
  • the pen pressure detecting unit 6 is configured to use, for example, a semiconductor element whose capacitance is variable according to the pen pressure as disclosed in Japanese Patent Application Laid-Open No. 2013-161307.
  • the capacitance of the pen pressure detecting unit 6 changes according to the pen pressure by using, for example, a pen pressure detecting means having a well-known mechanical structure described in Patent Document: Japanese Patent Application Laid-Open No. 2011-186803. It is also possible to configure a variable capacitance capacitor.
  • a printed circuit board 34 is further housed in the tubular body portion 33.
  • the printed circuit board 34 is provided with a capacitor 35 which is connected in parallel to the coil 31 to form a resonance circuit.
  • the variable capacitance capacitor composed of the pen pressure detection unit 6 is connected in parallel to the capacitor 35 formed on the printed circuit board 34 to form a part of the resonance circuit.
  • the electronic pen 1 of this embodiment electromagnetically induces coupling with the loop coil of the position detection sensor of the position detection device by a resonance circuit to interact with the signal.
  • the position detection device detects the position indicated by the electronic pen 1 by detecting the position of the signal received from the electronic pen 1 on the position detection sensor, and at the same time, changes in the frequency or phase of the signal received from the electronic pen 1. By detecting, the writing pressure applied to the electronic pen 1 is detected.
  • the coil non-winding portion of the ferrite core 32 on the side opposite to the pen tip side is fitted into the recess 33a provided in the tubular body portion 33.
  • the ferrite core 32 is coupled to the tubular body portion 33.
  • one ends 31a and 31b of the coil 31 are parallel to the capacitor 35 provided on the printed circuit board 34 of the tubular body 33 when the ferrite core 32 is coupled to the tubular body 33. It is electrically connected so that it is connected to.
  • the core body 7 is configured as shown in FIG. That is, FIG. 3A shows an enlarged cross-sectional view of the core body 7 of this embodiment, and the core body 7 of this embodiment includes a tip component 71 made of felt and an axial center component 72. , Both are combined.
  • the tip component 71 includes a tip 711 and a coupling core 712, as shown in the perspective view of FIG. 3 (B).
  • the tip portion 711 has a columnar shape in which one end side in the axial direction, which is the pen tip side, is formed in a hemispherical shape.
  • the coupling core portion 712 is integrally configured with the tip portion 711 so as to project in the axial direction from the center position of the end face on the side opposite to the pen tip side in the axial direction of the cylindrical tip portion 711. ing.
  • the coupling core portion 712 is formed in a rod shape having an outer diameter Rb (Rb ⁇ Ra) smaller than the outer diameter Ra of the cylindrical tip portion 711. Therefore, a ring-shaped end surface 713 around the coupling core portion 712 is formed on the end surface of the tip portion 71 of the tip configuration portion 71 opposite to the pen tip side.
  • the axial core component 72 is made of a non-fiber material harder than felt, in this example an elastic resin material, for example, POM (Polyoxymethylene), and is composed of an axial core main body 721 and a pen pressure detecting unit 6. It includes a fitting portion 722.
  • POM Polyoxymethylene
  • the axial center main body portion 721 is a rod-shaped portion having an outer diameter equal to the outer diameter Ra of the tip portion 711, and the length in the axial center direction is the axial center of the through hole 32a of the ferrite core 32. It is configured to be longer than the length in the direction.
  • the outer diameter Ra is smaller than the inner diameter r1 of the through hole 32a of the ferrite core 32.
  • the fitting portion 722 is a portion that is inserted into the fitting hole 6a of the pen pressure detecting portion 6 and is fitted.
  • the fitting portion 722 has a rod shape thinner than the axial center main body portion 721.
  • the side peripheral surface of the fitting portion 722 is engaged with a ring-shaped concave groove (not shown) formed on the inner wall surface of the fitting hole 6a of the pen pressure detecting portion 6.
  • a ring-shaped bulging portion 722a is formed to ensure that the core body 7 is securely locked to the pen pressure detecting portion 6.
  • the tip constituent portion 71 is coupled to the axial center main body portion 721 on the side opposite to the fitting portion 722 side in the axial center direction.
  • the tip configuration is such that the coupling core portion 712 of the tip configuration portion 71 is inserted into the recess 721a formed in the axis body portion 721 of the axis configuration portion 72.
  • the axial center component 72 is melt-joined to the portion 71.
  • the melting bonding means a bonding method in which a resin is melted (melted) by heating, bonded to another member such as felt, and then cooled to solidify the resin.
  • the axial center component 72 is formed by melting and joining the tip component 71 as follows, for example.
  • a heat-resistant member having an inner diameter of Ra and a columnar recess having a length in the axial direction longer than that of the axial component 72 is prepared, and the bottom of the columnar recess of the heat-resistant member is made of felt.
  • the tip component 71 is held so that the tip 711 side is the lower side (bottom side).
  • the resin melted by heating and made into a liquid is poured into the concave portion of the heat-resistant member so as to cover the coupling core portion 712 of the tip constituent portion 71.
  • the recess of the heat-resistant member is covered with a lid member having a recess having a shape corresponding to the fitting portion 722 of the axial center component 72.
  • a core body 7 in which the tip component 71 is connected to the axis component 72 is formed.
  • the resin becomes entangled with the felt fibers, and the tip constituent portion 71 and the axial core constituent portion 72 are firmly bonded to each other.
  • the axial core main body portion 721 of the axial core constituent portion 72 is formed with a recess 721a in which the connecting core portion 712 of the tip constituent portion 71 is inserted.
  • the resin melted into a liquid comes into contact not only with the connecting core portion 712 of the tip constituent portion 71 but also with the ring-shaped end surface 713 of the tip portion 711, and is entangled with the felt fibers at this portion as well.
  • the tip component 71 and the axial component 72 are firmly coupled.
  • a ring-shaped end surface 721b is formed around the recess 721a of the axial center main body portion 721 of the axial center constituent portion 72, and is in a state of abutting with the ring-shaped end surface 713 of the tip portion 711 of the tip constituent portion 71.
  • the axial core main body portion 721 of the axial core constituent portion 72 is inserted through the through hole 32a of the ferrite core 32.
  • the fitting portion 722 of the axial center component 72 is fitted into the fitting hole 6a of the writing pressure detecting portion 6, so that the fitting portion 722 is directly fitted into the writing pressure detecting portion 6.
  • the tip portion 711 of the tip configuration portion 71 and a part of the axial center main body portion 721 of the axial core constituent portion 72 protrude from the opening on the tip end side of the ferrite core 32. Be in a state.
  • a part of the axial core main body portion 721 of the axial core constituent portion 72 made of hard resin protrudes from the opening on the pen tip side of the ferrite core 32 together with the tip portion 711.
  • a part of the protruding axial center main body 721 can be grasped and pulled out. Therefore, the core body 7 can be easily pulled out from the electronic pen main body 3 without damaging the felt tip.
  • the axial core component 72 made of a hard resin is inserted into the through hole 32a of the ferrite core 32 and fitted with the pen pressure detection unit 6.
  • a felt-made tip portion 711 having a short axial length may be coupled to the axial center component 72 and one end side in the axial direction. Therefore, the core body 7 is composed of an axial core component 72 made of a hard resin except for the felt tip portion 711, which may have a short length, and therefore, as compared with the case where the entire core body is made of felt. The strength increases with each step.
  • the core body 7 having the above configuration has sufficient strength even if it is thinned, and if this core body 7 is used, the tip portion 711 is made of felt, so that the writing operation with good writing quality can be performed. It is possible to make the electronic pen thinner.
  • the ring-shaped end surface 713 of the felt tip 711 is the ring-shaped end surface of the axial component 72. It is configured to form a mating portion with 721b. Therefore, the writing pressure applied to the tip portion 711 of the tip constituent portion 71 is transmitted to the axial center constituent portion through the abutting portion of the ring-shaped end surface 713 and the ring-shaped end surface 721b. Further, since the fitting portion 722 of the axial core constituent portion 72 of the core body 7 is fitted to the writing pressure detecting portion, the writing pressure applied to the tip portion 711 can accurately and reliably detect the writing pressure. It is transmitted to the part 6.
  • the axial core constituent portion 72 of the core body 7 is made of a hard resin, there is no fluffing as in the case where the portion is made of felt. Therefore, the core body 7 can move in the axial direction without friction in the through hole 32a of the ferrite core 32 according to the applied writing pressure. Therefore, even if the tip portion 711 of the core body 7 is made of felt, the writing pressure can be accurately and surely transmitted to the writing pressure detecting unit 6.
  • the axial core constituent portion 72 made of resin is melt-bonded to the felt-made tip constituent portion 71, the felt fiber of the tip constituent portion 71 and the axial core configuration are formed.
  • the resin of the portion 72 is entangled with each other, and the tip component 71 and the axial component 72 are firmly bonded.
  • the electronic pen 1 of this embodiment when the electronic pen 1 in which the tip portion 711 of the core body 7 projects to the outside is used, not only the core body 7 but also a ferrite is used, as shown in FIG. 2 (B). A part of the core 32 also protrudes from the opening 2b of the housing 2, and the distance from the tip of the tapered portion 32b of the ferrite core 32 to the input surface of the position detection sensor is shortened. Therefore, according to the electronic pen 1 of this embodiment, the ferrite core 32 has a stronger electromagnetic coupling with the sensor than the conventional electronic pen staying in the hollow portion 2a of the housing 2.
  • the tip portion 711 side of the core body 7 of the ferrite core 32 is a tapered portion 32b, the cross-sectional area of the tip of the ferrite core 32 becomes smaller and the magnetic flux density becomes larger. Strong electromagnetic coupling with the position detection sensor.
  • the electronic pen 1 of this embodiment can be strongly electromagnetically coupled to the position detection sensor even when it is slimmed down, and the position detection device can detect the indicated position by the electronic pen 1 with high sensitivity. You will be able to detect it.
  • the core body 7 of the above-described embodiment is configured by melting and joining the resin-made axial core component 72 to the felt-made tip component 71, but the tip component is press-fitted into the axial center component.
  • the core body may be formed by joining by fitting.
  • FIG. 4 is an enlarged cross-sectional view for explaining a first example of another embodiment of the core body for an electronic pen.
  • the core body 7A for the electronic pen of the first example (hereinafter, abbreviated as the core body 7A) has a felt tip like the core body 7 of the above-described embodiment. It is composed of a constituent portion 71A and an axial core constituent portion 72A made of a hard resin.
  • the tip component 71A of the core body 7A of the first example is made of felt and includes a tip 711A and a coupling core 712A, similarly to the tip component 71.
  • the tip portion 711A of the tip constituent portion 71A of the core body 7A in this example is configured in the same manner as the tip portion 711 of the tip constituent portion 71 of the core body 7, and one end side in the axial direction, which is the pen tip side, is formed in a hemispherical shape.
  • the outer diameter is Ra, which is a columnar shape.
  • the coupling core portion 712A Similar to the coupling core portion 712 of the tip constituent portion 71 of the core body 7, the coupling core portion 712A has an axial center from the center position of the end surface opposite to the pen tip side in the axial direction of the cylindrical tip portion 711. It is integrally configured with the tip portion 711 so as to project in a rod shape in the direction. However, in the core body 7A of this example, the length of the coupling core portion 712A in the axial direction is slightly longer than that of the coupling core portion 712. Further, as shown in FIG. 4A, the rod-shaped coupling core portion 712A is formed in a tapered shape so that the outer diameter thereof is the thickest on the tip end portion 711A side and becomes thinner toward the tip end side. As shown in FIG. 4A, the outer diameter of the tapered rod-shaped coupling core portion 712A in the axial direction, for example, the middle diameter is smaller than the outer diameter Ra of the tip portion 711 in this example. It is configured to be equal to Rb
  • the axial core constituent portion 72A includes a cylindrical axial core main body portion 721A having an outer diameter of Ra and a fitting portion 722A, similarly to the axial core constituent portion 72 of the above-described embodiment. , It is configured as an individual formed by a resin in advance. Then, as shown in FIG. 4A, on the side opposite to the fitting portion 722A side in the axial direction of the axial core main body portion 721A of the axial core constituent portion 72A, the coupling core portion 712A of the tip constituent portion 71A is formed. A recess 721Aa to be fitted is formed.
  • the inner diameter of the recess 721Aa is equal to, for example, the outer diameter Rb in the middle of the axial direction of the tapered rod-shaped coupling core portion 712A.
  • the depth (length in the axial direction) of the recess 721Aa is larger than the length in the axial direction of the coupling core portion 712A of the tip constituent portion 71A.
  • the depth (length in the axial direction) of the recess 721Aa may be such that the coupling core portion 712A of the tip configuration portion 71A is completely fitted, and the coupling core portion 712A of the tip configuration portion 71A may be used.
  • the length may be equal to the length in the axial direction of.
  • the coupling core portion 712A of the tip constituent portion 71A is press-fitted into the recess 721Aa of the axial core main body portion 721A of the axial core constituent portion 72A and fitted.
  • the coupling core portion 712A of the tip configuration portion 71A is formed in a tapered shape as narrow as the tip, and the coupling side with the tip portion 711A is configured to be slightly larger than the inner diameter Rb of the recess 721Aa.
  • the coupling core portion 712A of the portion 71A is firmly fitted in the recess 721Aa.
  • the coupling core portion 712A of the tip constituent portion 71A and the ring-shaped end surface 713A of the tip portion 711A are coated with an adhesive before being inserted into the recess 721Aa, or the recess 721Aa and the ring shape.
  • An adhesive is applied to the end face 721Ab, and the ring-shaped end face 713A of the connecting core portion 712A and the tip portion 711A of the tip constituent portion 71A and the inside of the recess 721Aa and the ring-shaped end face 721Ab are adhered to bond the tip constituent portion 71A.
  • the core portion 712A and the inside of the recess 721Aa are firmly bonded.
  • the core body 7A of this first example has the same action and effect as the core body 7 of the above-described embodiment.
  • FIG. 5 is an enlarged cross-sectional view for explaining a second example of another embodiment of the core body for an electronic pen.
  • the core body 7B for the electronic pen (hereinafter, abbreviated as the core body 7B) of the second example is the same as the core bodies 7 and 7A of the above-described embodiment as shown in FIGS. 5A and 5B.
  • it is composed of a tip component 71B and an axial center component 72B. By connecting the tip component 71B and the axial center 72B, the core body 7B of the second example is configured as shown in FIG. 5C.
  • the tip component 71B of the core 7B of the second example is made of felt, and the tip 711B and the coupling core have the same structure as the tip 71A of the core 7A of the first example described above. It is provided with 712B, and the coupling core portion 712B has a tapered shape. However, as shown in FIGS. 5A and 5B, the length of the coupling core portion 712B in the axial direction is longer than that of the coupling core portion 712A of the first example. However, the length of the coupling core portion 712B in the axial direction may be the same as or shorter than that of the coupling core portion 712A of the first example.
  • the axial core main body portion 721B and the fitting portion 722B are configured as separate members, and the fitting portion 722B is fitted to the axial core main body portion 721B.
  • the axial center component 72B is configured.
  • the shaft body portion 721B of the shaft core component 72B of the second example is composed of a non-fiber member harder than felt, in this example, a metal such as SUS, and as shown in FIG. 5 (A), It is formed in the shape of a tubular pipe.
  • the outer diameter of the axial center main body portion 721B made of this metal pipe is configured to be equal to the outer diameter Ra of the tip portion 711B of the tip component portion 71B.
  • the inner diameter of the hollow portion 721Ba of the axial center main body portion 721B is configured to be equal to, for example, the outer diameter Rb of the tip constituent portion 71B in the axial direction of the coupling core portion 712B formed in a tapered shape. There is.
  • the connecting core portion 712B of the tip constituent portion 71B is contained in the hollow portion 721Ba. Is press-fitted and bonded with an adhesive, so that the tip component 71B is connected to the shaft body 721B in a state where the tip 711B protrudes from the shaft body 721B, and FIG. 5 (C) ), The core body 7C is configured. At this time, as shown in FIG.
  • the ring-shaped end surface 713Bb of the tip portion 711B abuts against the ring-shaped end surface 721Bb of the axial center main body portion 721B with the core bodies 7 and 7A of the above example. The same is true.
  • the fitting portion 722B of the axial center component 72B is composed of a non-fiber member harder than felt, in this example, a hard resin having elasticity such as POM. Then, as shown in FIGS. 5A and 5B, the fitting portion 722B is hollow between the pen pressure detecting portion fitting portion 722Ba fitted to the pen pressure detecting portion 6 and the axial center main body portion 721B.
  • the axial center main body fitting portion 722Bb which is inserted into the portion 721Ba and fitted to the axial center main body portion 721B, is connected in the axial direction via the connecting portion 722Bc.
  • the pen pressure detection unit fitting portion 722Ba is configured in the same manner as the fitting portion 722A of the axial core component 72A of the core body 7A in the above example, and is fitted into the fitting hole 6a of the pen pressure detection unit 6 to engage.
  • a ring-shaped bulge 722Baa for stopping is provided.
  • the shaft center body fitting portion 722Bb has an outer diameter equal to or slightly smaller than the inner diameter Rb of the hollow portion 721Ba of the shaft center body 721B, and is press-fitted or press-fitted into the hollow portion 721Ba of the shaft center body 721B. At the same time, it is bonded with an adhesive.
  • the connecting portion 722Bc is formed in a disk shape having an outer diameter equal to the outer diameter Ra of the axial center main body portion 721B, and as shown in FIG. 5 (B), the axial center of the fitting portion 722B.
  • the main body fitting portion 722Bb is fitted into the hollow portion 721Ba of the axial core main body 721B, it abuts against the end face of the axial core main body 721B.
  • the axial core main body portion 721B of the axial core constituent portion 72B is a metal pipe
  • the strength is further increased as compared with the case where the core body 7B is made of resin, and it is possible to make the core body thinner.
  • the tip component 71B made of felt is connected to one end side in the axial direction of the axial core main body portion 721B made of a metal pipe, and the other end side in the axial direction.
  • it can be manufactured by fitting the fitting portion 722B made of resin, it has an effect that the manufacturing is easy.
  • the coupling core portions 712A and 712B of the tip constituent portions 71A and 71B of the core body 7A of the first example and the core body 7B of the second example described above are formed in a tapered shape so as to be thinner toward the tip side. , It does not have to be tapered as a rod with a constant outer diameter.
  • the outer diameters of the tip portions 711, 711A and 711B of the tip constituent portions 71, 71A and 71B are equal to the outer diameters of the axial core main body portions 721, 721A and 721B.
  • the ring-shaped end faces 713, 713A and 713B of the tip portions 711, 711A and 711B and the ring-shaped end faces 721b, 721Ab and 721Bb of the axial center main body portions 721, 721A and 721B are in contact with each other, they are equal. It does not have to have an outer diameter.
  • FIG. 6 shows a core body 7'in which the tip end portion 711 of the tip end component 71 in the core body 7 of the above-described embodiment is deformed.
  • the outer diameter of the tip portion 711 ′ of the tip constituent portion 71 ′ on the joint portion side with the coupling core portion 712 is larger than the outer diameter of the axial core main body portion 721.
  • the ring-shaped end surface 713'of the tip portion 711' is larger than the ring-shaped end surface 713b of the shaft center body portion 721, and the writing pressure applied to the tip portion 711' is applied to the shaft center body portion 721. On the other hand, it is transmitted more reliably.
  • the fitting portions 722 and 722A and 722B of the core bodies 7, 7A and 7B are made to fit directly with the pen pressure detecting portion 6.
  • a pressure transmission member is provided between the core bodies 7, 7A, 7B and the pen pressure detection unit 6, and the core bodies 7, 7A, 7B are indirectly connected to the pen pressure detection unit 6 via the pressure transmission member 36. It may be fitted with a target.
  • the fitting portion 722 of the core body 7 is provided with a fitting recess 36a to be fitted, and the fitting portion is fitted into the fitting recess of the pen pressure detecting portion.
  • a pressure transmitting member 36 having a protrusion 36b is interposed between the core body 7 and the pen pressure detecting portion.
  • the tip component of the core body of the above-described embodiment is an example of being composed of a single felt, it may be composed of two kinds of materials having different hardness as described below. ..
  • FIG. 7 is an enlarged cross-sectional view for explaining a configuration example of the core body 7C for an electronic pen having such a configuration.
  • the core body 7C for the electronic pen (hereinafter, abbreviated as the core body 7C) of this example includes the tip component 71C and the shaft in the same manner as in the above example.
  • the axial core constituent portion 72C is the axial core constituent portion 72B of the core body 7B of the second example of the other embodiment of the electronic pen core body described with reference to FIG. It has the same configuration as the above, and the configuration of the tip component 71C is different from the above example.
  • the core body 7C of this example is configured as shown in FIG. 7C.
  • the axial core constituent portion 72C of the example of FIG. 7 is a metal that is an example of a material harder than the tip constituent portion 71C, for example, SUS, like the axial core constituent portion 72B of the core body 7B described with reference to FIG. 721C (FIG. 7 (A)), which is formed in a tubular pipe shape, and the tip component 71C of the shaft body 721C, for example, on the opposite side to the connecting side.
  • the fitting portion 722C made of a hard resin having elasticity such as the above is bonded and configured.
  • the fitting portion 722C of the axial center constituent portion 72C is fitted with the pen pressure detecting portion fitting portion 722Ca fitted to the pen pressure detecting portion 6.
  • the axial center main body fitting portion 722Cb that is inserted into the hollow portion 721Ca of the axial core main body 721C and fitted to the axial core main body 721C is connected in the axial direction via the connecting portion 722Cc. It is said that.
  • the pen pressure detection unit fitting portion 722Ca includes a ring-shaped bulging portion 722Ca for being fitted and locked in the fitting hole 6a of the pen pressure detection unit 6.
  • the shaft center body fitting portion 722Cb has an outer diameter equal to or slightly smaller than the inner diameter Rd of the hollow portion 721Ca of the shaft center body 721C, and is hollow of the shaft center body 721C. It is press-fitted into the portion 721Ca, or is press-fitted and bonded with an adhesive.
  • the connecting portion 722Cc of the fitting portion 722C is formed in a disk shape having an outer diameter equal to the outer diameter Rc of the axial center main body portion 721C, and is fitted as shown in FIG. 7 (B).
  • the axial core main body fitting portion 722Cb of the portion 722C is fitted into the hollow portion 721Ca of the axial core main body 721C, it abuts against the end face of the axial core main body 721C.
  • the tip portion 71C of the core body 7C of this example is a tip portion protruding from the axial core component 72C, similarly to the core body of the above example.
  • a soft material for example, an elastic material
  • the tip center portion 714 made of an elastomer and the tip center portion 714 are used. It is composed of a material that is harder than the axial core component 72C and softer than the axial component 72C, and in this example, a tip peripheral portion 715 composed of POM.
  • the tip center portion 714 has a length extending from the tip portion 711C to the coupling core portion 712C in the axial direction of the core body 71C, and has an outer diameter Rf ( ⁇ Rd) smaller than the inner diameter Rd of the hollow portion 721Ca of the shaft core body portion 721C. ) Is a columnar structure.
  • the tip 714a of the tip center portion 714 has a curved surface shape such as a partial spherical shape or a dome shape.
  • the tip peripheral portion 715 is configured to cover the portion of the tip center portion 714 excluding the tip 714a.
  • the portion 715b of the coupling core portion 712C of the tip peripheral portion 715 covers the portion of the coupling core portion 712C of the tip center portion 714 concentrically.
  • the outer diameter is configured to be equal to or slightly smaller than the inner diameter Rd of the hollow portion 721Ca of the axial center main body 721C.
  • the portion 715a of the tip portion 711C of the tip peripheral portion 715 is in a direction orthogonal to the axial direction from the coupling portion of the tip portion 711C with the coupling core portion 712C.
  • the shape has a tapered shape that is tapered toward the tip end portion 714a of the tip end center portion 714.
  • the curved surface-shaped portion of the tip 714a of the tip center portion 714 is not covered by the tip peripheral portion 715 and is exposed. Therefore, the tip 714a of the tip center portion 714 comes into contact with the input surface of the position detection sensor as the pen tip of the electronic pen, and a good writing feel can be obtained.
  • the tip peripheral portion 715 has the above-mentioned shape, a step having a ring-shaped end surface 715c between the tip portion 711C portion 715a of the tip peripheral portion 715 and the joint core portion 712C portion 715b.
  • the part is formed.
  • the outer diameter Rg of the portion protruding in the direction orthogonal to the axial direction of the portion 715a of the tip portion 711C of the tip peripheral portion 715 is from the outer diameter Re of the axial core constituent main body 721C of the axial constituent 72C. Is also large. Therefore, the ring-shaped end surface 721Cb of the axial center component main body 721C is covered by the ring-shaped end surface 715c of the tip peripheral portion 715.
  • the ring-shaped end surface 721Cb of the axial center component main body 721C is covered by the ring-shaped end surface 715c of the tip peripheral portion 715, it is orthogonal to the axial direction of the tip portion 711C portion 715a of the tip peripheral portion 715.
  • the outer diameter Rg of the portion protruding in the direction of the shaft may be equal to the outer diameter Re of the axial center component main body 721C.
  • the core body component 71C of this example is configured by melting and joining the tip peripheral portion 712C to the tip center portion 711C.
  • the tip center portion 714 may be inserted into the through hole of the tip peripheral portion 715 to fix both with an adhesive, or the two may be fixed in a press-fitting state.
  • the connecting core portion 712C of the tip constituent portion 71C is formed in the hollow portion 721Ca.
  • the tip component 71C is joined to the shaft body 721C in a state where the tip 711C protrudes from the shaft body 721C, and FIG. 7C is shown in FIG.
  • the core body 7C is configured. At this time, as shown in FIG.
  • the ring-shaped end surface 715Cb of the tip peripheral portion 715 of the tip portion 711C collides with the ring-shaped end surface 721Cb of the axial center main body portion 721C. It is the same as the bodies 7, 7A and 7B.
  • the core body component 71C is softer than the tip peripheral portion 715 at the tip center portion 714, and the tip center portion 714 is softer than the axial center component 72C except for the tip 714a. Since it is configured to be covered with a tip peripheral portion 715 that is harder than 714, the strength of the core constituent portion is increased as compared with the core constituents 7, 7A and 7B composed of the core constituent only made of felt. Can be high.
  • the writing pressure applied to the tip 714a of the tip center portion 714 can be more reliably transmitted to the writing pressure detecting unit 6.
  • the tip center portion 714 is made of an elastomer, but it may be made of felt or a member made of other soft material.
  • the electronic pen has the electronic pen main body as the cartridge and is provided with a knock type mechanism.
  • the electronic pen is not provided with the electronic pen main body or the knock type mechanism of the cartridge structure, and at least electronic.
  • the present invention is applicable as long as the electronic pen is configured so that the tip of the pen core protrudes outward from the opening of the tubular housing.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Human Computer Interaction (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Pens And Brushes (AREA)
  • Position Input By Displaying (AREA)
PCT/JP2020/018482 2019-05-20 2020-05-07 電子ペン用芯体及び電子ペン Ceased WO2020235342A1 (ja)

Priority Applications (4)

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CN202080036723.0A CN113853572B (zh) 2019-05-20 2020-05-07 电子笔用芯体及电子笔
JP2021520693A JP7514826B2 (ja) 2019-05-20 2020-05-07 電子ペン用芯体及び電子ペン
US17/513,775 US11573649B2 (en) 2019-05-20 2021-10-28 Electronic pen core body and electronic pen
US18/066,236 US11714498B2 (en) 2019-05-20 2022-12-14 Electronic pen core body and electronic pen

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JP2019-094201 2019-05-20
JP2019094201 2019-05-20

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US11714498B2 (en) 2023-08-01
JPWO2020235342A1 (https=) 2020-11-26
US11573649B2 (en) 2023-02-07
US20230123155A1 (en) 2023-04-20
CN113853572A (zh) 2021-12-28

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