JP5722834B2 - Input pen - Google Patents

Description

  The present invention relates to an input pen for inputting information by bringing a tip side portion into contact, and more particularly to an input pen suitable for inputting position information and the like for a capacitive position detecting device.

  In recent years, a capacitive position detection device (sometimes referred to as a touch panel) is often used for displays such as mobile phones and tablet PCs. The input operation for the capacitance type position detection device is usually performed by a fingertip. However, for nail art or the like, it is difficult for the toe to abut on the capacitance type position detection device, or when wearing a glove or fingertip. Input may not be possible due to dryness etc. Therefore, an input pen is used in which a conductive rubber is attached to the tip end side of the shaft tube.

By the way, in the conventional input pen for the electrostatic capacitance type position detecting device described above, the conductive rubber is hard and the touch feeling is impaired or the contact area cannot be secured when tilted or the like, and a good reaction is obtained. There are problems such as missing.
Therefore, for example, in the invention described in Patent Document 1, the contact member (5) for making contact with the capacitance type position detection device is formed in a thin hemispherical shape, and the contact member (5) is disposed on the rear side. And supporting by a brass core (3) and securing a hollow part (5c) between the contact member (5) and the tip of the core (3) to improve the deformability of the contact member (5) doing.

However, according to the prior art, when the tap operation of pressing the capacitance type position detection device (touch panel) with the input pen is performed, if the operator applies too much pressing force, or the tap operation is performed so that the operator strongly applies the pressing force. In such a case, the contact member (5) may be deformed relatively greatly, and the inner surface of the deformed contact member (5) may hit the brass core (3) strongly, thereby impairing the operational feeling of the tap operation. There is. Furthermore, there is a possibility that equipment such as a capacitance type position detecting device may be damaged by an impact when the inner surface of the contact member (5) hits the brass core (3).
Further, since rubber is used for the contact portion with the capacitance type position detection device, a drag operation for sliding the contact member (5) against the capacitance type position detection device or the contact member (5) is possible. When the flicking operation is performed so that the rubber contact member (5) is separated from the electrostatic capacitance type position detection device, the rubber contact member (5) is difficult to slip and the operability is impaired.

Japanese Patent No. 4840891

  This invention makes it an example of a subject to cope with the said conventional situation. That is, it is an object of the present invention to obtain a soft and good touch feeling, to improve the operational feeling, to alleviate the impact on the capacitance type position detection device, and the like.

One means for solving the above problems is to form at least a contact surface with respect to the detection device with a conductive material, and to press the contact surface to be elastically deformed inward by being pressed, and to deform inwardly. a receiving portion for receiving the inner surface of the pressed and deformed portions of upon the space provided between the receiving portion and the pressed and deformed portion, the press-deformation portion and the shaft tube connected to the rear side of the receiving part If, comprises a, a core that is fixed to the barrel so as to receive said receiving portion, the input pen for inputting information to the detection device, the receiving portion is made of an elastic material, its front end The cylindrical portion that protrudes forward and continues with the same inner and outer diameter up to the foremost end, the core material is made of a hard material, and the front end side fits into the cylindrical portion from the inside or It is formed in the shape of a shaft, and the foremost end thereof is the cylindrical portion Than the forwardmost portion disposed on the rear side, the press-deformation portion, when deformed inwardly, and being provided so as to contact the outer peripheral edge of the forwardmost portion of the cylindrical portion.

  Since the present invention is configured as described above, it is possible to obtain a soft and good touch feeling, improve the operational feeling, reduce the impact on the capacitance type position detection device, etc. Aim can be achieved.

1 is an overall view showing an example of an input pen according to the present invention. It is principal part sectional drawing of the input pen. It is principal part sectional drawing which shows the state which pressed and deform | transformed the input pen against the electrostatic capacitance type position detection device.

The first feature of the present embodiment is that at least the contact surface for the detection device is formed of a conductive material, and the contact surface is pressed and elastically deformed inward by being pressed, and deformed inwardly. An input pen that includes a receiving portion that receives an inner surface of the pressing deformation portion when the pressing deformation portion is formed, and a shaft tube connected to the rear side of the pressing deformation portion and the receiving portion, and that inputs information to the detection device. The part is formed so as to be elastically deformed by receiving the inner surface of the pressing deformation part.
According to this configuration, the pressing deformation portion is elastically deformed inward when pressed against the capacitance type position detection device. Then, the receiving part receives and elastically deforms the inner surface of the pressing deformation part when deformed inward. Therefore, the deformed pressing deformation portion does not directly contact the rigid core material and the like, and a soft and good touch feeling can be obtained. The impact on the capacitive position detection device can be reduced.

  As a second feature, in order to obtain a better touch feeling, the receiving portion is formed of an elastic material harder than the pressing deformation portion.

As a third feature, a space is provided between the pressing deformation portion and the receiving portion, and when the pressing deformation portion is deformed inward, the space is narrowed and an inner surface of the pressing deformation portion is the receiving portion. To abut.
According to this configuration, since the pressing deformation portion is more easily deformed, the touch feeling can be further improved, and a relatively wide contact area can be ensured, so that the capacitive position detection device can be reacted well. .

As a fourth feature, the pressing deformation portion includes an elastic portion made of an elastic material and a conductive fiber portion that covers the elastic portion and forms the contact surface.
According to this configuration, the frictional resistance when contacting and sliding on the capacitance type position detection device can be reduced by the conductive fiber portion, and as a result, the operation feeling and operability during the draft operation and the flick operation are reduced. Can be remarkably improved.

  Further, as a more preferable aspect, in order to satisfactorily perform deformation and elastic restoration of the pressing deformation portion, the space between the pressing deformation portion and the receiving portion is communicated with outside air.

  Furthermore, as a more preferable aspect, in order to prevent the receiving portion from sinking toward the shaft tube side, a core material made of a hard material is fixed to the shaft tube so as to receive the receiving portion. To do.

  Further, as a more preferable aspect, in order to easily deform the receiving portion, the receiving portion is formed in a cylindrical shape, and the inner surface of the pressing deformation portion is received by an edge portion thereof.

  Further, as a more preferable aspect, the core member is formed in a cylindrical shape or a shaft shape that receives the inner surface of the cylindrical receiving portion from the inside so as not to impair the deformability of the receiving portion, and the front end portion thereof is formed. , It is arranged behind the front end of the receiving part.

Further, as a more preferred aspect, an inner clamping portion that sandwiches the conductive fiber portion from the inner side and the outer side in the axial direction of the shaft cylinder on the front end side of the shaft tube so that the conductive fiber portion does not easily come off. And an outer clamping part.

Further, as a more preferable aspect, in order to make the fixing of the conductive fiber portion more robust, a large number of irregularities are formed in one or both of the inner sandwiching portion and the outer sandwiching portion.

  Next, a preferred embodiment embodying the above embodiment will be described in detail with reference to the drawings.

As shown in FIGS. 1 and 2, the input pen 1 is provided with a shaft tube 10 and a pressure deformation that is provided on the front end side of the shaft tube 10 and elastically deforms inward when pressed from the outside. Part 20, receiving part 30 that receives the inner surface of pressing deformation part 20 when deformed inward, core member 40 that receives receiving part 30 from the inner side thereof, and press-deforming part 20 and core member 40 are axial tube 10 and a writing part 60 provided on the rear end side of the barrel 10, and the outer surface of the pressing deformation part 20 is a detection surface a of the capacitive position detection device. The position information to be contacted (see FIG. 3) is input.
In the present specification, “front” refers to the direction side (lower side according to FIG. 1) having the pressing deformation portion 20 in the axial direction of the shaft tube 10, and “rear” refers to the opposite side (FIG. 1). According to the above).

According to the illustrated example, the shaft cylinder 10 includes a first shaft body 11 having a clip portion 11 a on the outer periphery, and a second shaft body 12 rotatably connected to a rear end portion of the first shaft body 11. It is formed in a cylindrical shape.
The first and second shaft bodies 11 and 12 are each formed in a substantially cylindrical shape, and the first shaft body 11 has a structure for supporting the pressing deformation portion 20 and the receiving portion 30 and the like. The shaft body 12 has a structure in which the writing portion 60 is projected and retracted by the rotation of the second shaft body 12.
According to the present embodiment, the first and second shaft bodies 11 and 12 are formed of a conductive metal material (for example, brass or the like).
In addition, as another example of the axial cylinder 10, it is possible to set it as the aspect which consists of a single cylindrical body, and the aspect which consists of three or more cylindrical bodies.

  The pressing deformation portion 20 includes an elastic portion 21 made of a material having elasticity, and a conductive fiber portion 22 that covers the outer surface of the elastic portion 21 and forms a contact surface with respect to the capacitance type position detection device. It is provided at the foremost end of the input pen 1 so as to be concentric with the barrel 10.

The elastic portion 21 is formed from a material having elasticity such as an elastomer (including synthetic rubber) into a thin and substantially convex shape, and a space S is secured between the inner surface thereof and a receiving portion 30 described later.
The shape of the elastic portion 21 will be described in more detail. The front half of the elastic portion 21 is formed in a semispherical shape with a hollow inside, and the latter half of the elastic portion 21 is formed in a cylindrical shape. And the inner edge of the last end part of the elastic part 21 has the annular step part 21a expanded in diameter so that the receiving part 30 mentioned later may be fitted.
Further, as shown in FIG. 3, the thickness and hardness of the elastic portion 21 are easily deformed and pressed when the pressing deformation portion 20 is pressed against the detection surface a of the capacitance type position detecting device. Between the deformation | transformation part 20 and the detection surface a, it adjusts suitably so that the flat contact area for making an electrostatic capacitance type position detection apparatus react may be ensured.
In addition, in the input pen 1 of the present embodiment, since the conductive fiber portion 22 described later is conductive, the elastic portion 21 may not be a conductive material.

The conductive fiber portion 22 is formed in a sheet shape by weaving conductive fibers (or yarns), covers the elastic portion 21, and has a rear end side fastened to a rear portion of a core member 40 described later.
The fibers constituting the conductive fiber portion 22 are coated with a conductive metal material such as copper, aluminum or brass, a fiber containing a conductive material such as carbon or a conductive polymer, or the conductive material, for example. A fiber may be used.

The receiving portion 30 is made of an elastic material harder than the pressing deformation portion 20 (specifically, the elastic portion 21), and is integrally formed from a front cylindrical portion 31 and a flange portion 32 on the rear end side of the cylindrical portion. The inner surface of the deformable portion 20 is provided concentrically with the pressing deformable portion 20 via the space S.
The material of the receiving portion 30 may be an elastic material that is substantially the same as the material of the elastic portion 21 described above and has a hardness higher than that of the elastic portion 21. The hardness is appropriately selected so that the inner surface of the elastic portion 21 when deformed inward is softly received and the touch feeling is improved. The receiving portion 30 may not be made of a conductive material, but may be made of conductive rubber.

The cylindrical portion 31 is formed in a cylindrical shape substantially concentric with the pressing deformation portion 20, and a front end portion and an outer peripheral surface thereof are arranged apart from the inner surface of the elastic portion 21.
The flange portion 32 is formed in an annular shape having an outer diameter larger than that of the cylindrical portion 31, and the outer peripheral portion thereof is fitted to the step portion 21 a on the rear end side inner surface of the elastic portion 21. Further, according to the illustrated example, the rear end surface of the flange portion 32 and the rear end surface of the elastic portion 21 are substantially flush.

  In the present embodiment, the core member 40 is made of a conductive metal material (for example, brass, copper, aluminum, an alloy containing these, or the like), and the front tube portion 41 that receives the inner surface of the tube portion 31 of the receiving portion 30 from the inside. From the large-diameter cylindrical portion 42 that is connected to the rear side of the front-side cylindrical portion 41 and larger in diameter than the front-side cylindrical portion 41, and from the large-diameter cylindrical portion 42 that is connected to the rear side of the large-diameter cylindrical portion 42. Is also formed integrally with the rear cylinder portion 43 having a small diameter.

  The front cylinder portion 41 is formed in a cylindrical shape that fits from the inside to the cylinder portion 31 of the receiving portion 30, and the front end portion thereof is disposed on the rear side of the front end portion of the receiving portion 30. According to this configuration, as shown in FIG. 3, the front end portion of the front cylinder portion 41 can be easily elastically deformed by the cylinder portion 31 when deformed in the centripetal direction.

The large-diameter cylindrical portion 42 has a large number of irregularities on its outer peripheral surface by so-called knurling, and the irregularities serve as an inner clamping portion 42a that sandwiches the conductive fiber portion 22 with a connecting member 50 described later. According to the concave and convex inner sandwiching portion 42a, the frictional resistance with the conductive fiber portion 22 can be increased so that the conductive fiber portion 22 cannot be easily pulled out.
In addition, according to the illustrated example, the inner clamping portion 42a is formed with a large number of irregularities on the front surface of the outer diameter portion of the large diameter cylindrical portion 42. As another example, the inner clamping portion 42a has irregularities on a part of the outer diameter portion. It is also possible to adopt a mode in which the outer diameter portion is formed, a mode in which male screw-like irregularities are formed in the same outer diameter portion, or the like.

  The rear cylinder portion 43 is provided so as to protrude rearward from the large diameter cylinder portion 42. The rear tube portion 43 covers the rear end portion of the conductive fiber portion 22. The rear end portion of the conductive fiber portion 22 is bonded to a range extending from the rear end surface of the large-diameter cylindrical portion 42 to the outer peripheral surface of the rear cylindrical portion 43 in a state of covering the rearmost end portion of the rear cylindrical portion 43. . At this time, the adhesive 44 is applied to the corner portion between the large diameter cylindrical portion 42 and the rear cylindrical portion 43. According to this adhesive structure, the adhesive 44 can be collected at the corners to prevent the adhesive 44 from being scattered, and the adhesive effect of the adhesive 44 can be favorably obtained.

The through holes 40 a in the inner surfaces of the front cylinder portion 41, the large diameter cylinder portion 42, and the rear cylinder portion 43 communicate the space S described above with the space in the shaft cylinder 10. This space is communicated with the outside air through the rear end (upper end in FIG. 1) of the shaft cylinder 10 through the space between the writing portion extending and retracting mechanism in the shaft cylinder and the inner surface of the shaft cylinder 10.
Therefore, when the pressing deformation portion 20 is pressed and deformed inward, the air in the space S in the pressing deformation portion 20 is discharged to the outside of the input pen 1. For this reason, the press deformation | transformation part 20 can be deform | transformed easily. Also, when the pressing deformation portion 20 is restored to the original shape, the outside air can be taken into the space S and the restoration can be performed quickly.

The connecting member 50 is a cylindrical hard member having an outer diameter substantially the same as that of the shaft tube 10, and is connected to the front end portion of the shaft tube 10 by connecting means such as fitting or screwing.
According to the present embodiment, the material of the connection member 50 is a conductive metal material (for example, brass, copper, aluminum, an alloy containing these, or the like), like the large-diameter cylindrical portion 42.
The cylindrical inner surface on the front side of the connecting member 50 acts as an outer clamping part 50a that sandwiches the conductive fiber part 22 with the inner clamping part 42a on the outer surface of the core member 40.
Further, the inner surface of the connecting member 50 on the rear side of the outer clamping portion 50a is a step portion 50b having a slightly enlarged diameter, and the step portion 50b is a large-diameter cylindrical portion covered with the conductive fiber portion 22. 42 receives the rear end face.

  According to the illustrated example, the writing unit 60 is a tip of a ballpoint pen refill. The writing unit 60 appears and disappears from the rear end of the shaft tube 10 by a projecting mechanism (not shown) provided in the shaft tube 10. According to the illustrated example, the intruding mechanism is a mechanism in which the writing unit 60 appears and disappears by rotating the second shaft body 12 relative to the first shaft body 11, but as another example, writing can be performed by a knock operation. It is also possible to use a mechanism that makes the part 60 appear and disappear.

Next, a procedure for assembling the front side structure of the input pen 1 will be described.
First, the receiving part 30 is mounted on the front end side of the core member 40. Next, the core member 40 and the receiving portion 30 are annularly press-fitted so as to cover the elastic portion 21. And the conductive fiber part 22 is attached so that the elastic part 21 and the front side cylinder part 41 may be covered.
The rear end side of the conductive fiber portion 22 is bonded to the rear portion side of the core member 40 as described above. In this case, the adhesive 44 may be applied to the core material 40 before the conductive fiber portion 22 is mounted, or the conductive fiber portion 22 is soaked after the conductive fiber portion 22 is mounted. May be.
Next, the core member 40 whose outside is covered with the conductive fiber portion 22 is press-fitted into the inner peripheral surface on the front end side of the connection member 50.
Then, the connecting member 50 is attached to the front end side of the shaft tube 10. The connecting member 50 may be attached to the shaft cylinder 10 in advance.

Next, the characteristic effect of the input pen 1 having the above configuration will be described in detail.
When the pressing deformation portion 20 is pressed against or pressed against the detection surface a as shown in FIG. 3 for a tap operation, a drag operation, a flick operation, or the like on the capacitance type position detection device, the pressing deformation portion 20 is The inner space S is deformed inward so as to contract. At this time, since the air in the space S is discharged out of the shaft tube 10 through the through hole 40a in the core member 40 and the space in the shaft tube 10, the deformation of the pressing deformation portion 20 is accelerated by a relatively light force. Is done.
Then, the deformed pressing deformation portion 20 abuts the inner surface thereof on the front end of the receiving portion 30. Receiving 30 receives a press-deformation portion 20, in the earthenware pots by recessing the front end portion of the cylindrical portion 31 in the centripetal direction is easily deformed.
Therefore, when the pressing deformation portion 20 is deformed, the inner surface of the pressing deformation portion 20 comes into contact with the receiving portion 30, but compared to the case where the receiving portion 30 is made of a hard material, there is a sense of incongruity at the time of contact. There is little, and the impact at the time of the contact is also small. For this reason, it is possible to obtain a soft and favorable touch feeling and operation feeling, and to reduce the possibility of damage to the capacitive position detecting device by reducing the impact on the capacitive position detecting device.
Moreover, since the front end portion of the pressing deformation portion 20 is covered with the fiber (conductive fiber portion 22), it is possible to reduce the frictional resistance when contacting and sliding on the detection surface a of the capacitance type position detection device. As a result, it is possible to remarkably improve the operation feeling and operability during the draft operation and the flick operation.

  In addition, according to the said Example, although the surface of the elastic part 21 was covered with the conductive fiber part 22 so that the frictional resistance with respect to the detection surface a may be reduced, the press deformation part 20 was comprised. For example, it is possible to adopt an embodiment made of a single-layer conductive elastic material (for example, conductive rubber or the like), an embodiment made of three or more layers of appropriate materials, and the like.

  Moreover, according to the said Example, the press deformation | transformation part 20 was comprised by covering the whole outer surface of the elastic part 21 with the electroconductive fiber part 22, but this press deformation | transformation part 20 is at least an electrostatic capacitance type position detection apparatus. As long as the contact surface with respect to the detection surface a is formed of a conductive material, as another example, a mode in which a part of the elastic part 21 is covered with the conductive fiber part 22 or a part of the elastic part 21 is used. It is also possible to adopt an embodiment in which is formed of a conductive material.

Moreover, according to the said Example, although the receiving part 30 was formed from the elastic material harder than the elastic part 21 of the press deformation | transformation part 20 as a particularly preferable aspect, it is the same as the elastic part 21 as another example of this receiving part 30. It is also possible to form from an elastic material having hardness (hardness), or from an elastic material softer than the elastic portion 21 (small hardness).
Furthermore, as another example of the receiving part 30, it is also possible to adopt a mode in which the inner surface of the elastic part 21 is elastically received by a coil spring or a leaf spring.

  Moreover, according to the said Example, although the space S was provided between the press deformation | transformation part 20 and the receiving part 30 as a particularly preferable aspect, as an other example, the space S was excluded and the inner surface of the press deformation part 20 was made. It is also possible to adopt a mode in which the receiving part 30 receives directly.

  Further, according to the above embodiment, the front end side of the receiving part 30 is formed in a cylindrical shape so that the receiving part 30 is deformed satisfactorily when used at a normal writing angle. The front end side of the portion 30 can be formed in a hemispherical shape following the inner surface of the elastic portion 21, or can be formed in a columnar shape or other shapes.

  Moreover, according to the said Example, although uneven | corrugated was formed only in the inner side clamping part 42a of the core material 40 outer periphery as an example which improves the fastening strength of the electroconductive fiber part 22, and also has favorable manufacturability, In order to further improve the fastening strength of the conductive fiber portion 22, the outer sandwiching portion 50a on the inner surface of the connection member 50 is also formed with irregularities, or the inner sandwiching portion 42a and the outer sandwiching portion for reducing manufacturing man-hours, etc. It is also possible to omit the unevenness on both sides of the portion 50a.

  Moreover, in the said Example, although the electroconductive fiber part 22, the core material 40, the connection member 50, and the axial cylinder 10 were formed with an electroconductive material, the electrical conductivity from the electroconductive fiber part 22 to the axial cylinder 10 was ensured. As long as the capacitive position detection device can be reacted satisfactorily, it is possible to form a material other than the conductive fiber portion 22 from a material other than the conductive material.

  Moreover, in the said Example, by making the electroconductive fiber part 22 into material which has sufficient durability (a tensile strength, abrasion resistance, etc.), about the press deformation | transformation part 20, fundamentally part replacement is unnecessary. However, as another example, the pressing deformation portion 20 and the like can be configured to be replaceable. As an example in this case, the configuration on the front side from the connection member 50 (that is, the pressing deformation portion 20, the receiving portion 30, the core member 40, and the connection member 50) is integrated, and the connection member 50 is connected to the front end of the shaft tube 10. On the other hand, it may be connected by a detachable connecting means such as screwing or fitting.

  Moreover, although the input pen 1 of the said Example was comprised for electrostatic capacitance type position detection apparatuses, this input pen 1 is detected other than electrostatic capacitance type position detection apparatuses, such as a resistive film type position detection apparatus, for example. It can also be used in an apparatus. Furthermore, the tip shape, hardness, etc. of the input pen 1 are appropriately changed to make it easy to input especially to the resistance film type, to make it easy to input to both the capacitance type and the resistance film type, etc. It is also possible to do.

  Moreover, in the input pen 1 of the said Example, although it provided with the refill for ball-point pens in the rear part side, it replaced with the refill for ball-point pens, the aspect provided with the refill for mechanical pencils, the writing part of a sign pen and a fountain pen A multi-function writing instrument (multi-color writing instrument) having a plurality of ballpoint pen refills and / or mechanical pencil refills, an aspect without any of the writing sections as described above, and the like. is there.

1: Input pen 10: Shaft cylinder 20: Press deformation part 21: Elastic part 22: Conductive fiber part 30: Receiving part 40: Core material 42a: Inner clamping part (unevenness)
50: Connection member 50a: Outer clamping part S: Space

Claims (4)

At least the contact surface for the detection device is formed of a conductive material, and the contact surface is pressed and elastically deformed inward, and the inner surface of the pressure deformation portion when deformed inward is received. a receiving portion, and a space provided between the receiving portion and the pressed and deformed portion, a shaft tube connected to the rear side of the pressed and deformed portion and the receiving portion, the so as to receive said receiving portion In an input pen that includes a core member fixed to a shaft tube and inputs information to a detection device,
The receiving portion is made of an elastic material, and has a cylindrical tube portion that protrudes forward and continues at the same inner and outer diameter to the front end portion on the front end side thereof,
The core material is made of a hard material, and the front end side is formed in a cylindrical shape or a shaft shape that fits into the cylindrical portion from the inside, and the frontmost end portion is disposed on the rear side of the frontmost end portion of the cylindrical portion. And
The input pen , wherein the pressing deformation portion is provided so as to come into contact with an outer peripheral edge at a foremost end portion of the cylindrical portion when deformed inward . The input pen according to claim 1, wherein the space is secured between an inner surface of the pressing deformation portion and an outer peripheral surface and a front end surface of the cylindrical portion . The pressing deformation portion includes an elastic portion made of a material having elasticity, and a conductive fiber portion that covers the elastic portion and forms the contact surface, and the conductive fiber portion is disposed on a front end side of the shaft tube. Are provided with an inner clamping portion and an outer clamping portion that are sandwiched from the inner and outer sides in the axial direction of the shaft cylinder, and a plurality of irregularities are formed in one or both of the inner clamping portion and the outer clamping portion. The input pen according to claim 1 or 2, characterized in that: The pressing deformation portion includes an elastic portion made of a material having elasticity, and a conductive fiber portion that covers the elastic portion and forms the contact surface,
The core member is connected to the rear side of the front side cylindrical part, and has a larger diameter cylindrical part than the front side cylindrical part, the front side cylindrical part receiving the inner side of the cylindrical part of the receiving part, It is connected to the rear side of the large-diameter cylindrical portion and is configured integrally with the rear-side cylindrical portion having a smaller diameter than the large-diameter cylindrical portion,
The conductive fiber portion covers the elastic portion, and its rear end is covered with the rear cylinder portion, and is applied to a corner portion between the large diameter cylinder portion and the rear cylinder portion. The input pen according to claim 1, wherein the input pen is bonded to a range extending from a rear end surface of the large-diameter cylindrical portion to an outer peripheral surface of the rear-side cylindrical portion .

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