Stylus pen and coordinate reading system using the same

Claim 2

A stylus pen for use in a coordinate reading device, the coordinate reading device being intended, when a reading surface thereof is indicated by the stylus pen, to determine an indicated coordinate according to an induction signal induced in the coordinate reading device, the stylus pen comprising: a pen shaft (1) shaped like a writing instrument, and characterised by further comprising a mechanical pencil unit (21, 22) supported so that a pen tip portion (21) thereof and a rear end portion (22) thereof partly protrude from the pen shaft respectively, having a pen-core drawout function of drawing out a pen core (24) by pushing the rear end portion, supported so that the pen tip portion resists against the pen shaft with respect to a pushing force of pushing the rear end portion in an axial direction of the pen shaft and supported so as to be slidable and to have elasticity with respect to a writing pressure of pushing the pen tip portion in the axial direction, and having a writing pressure transmission portion (42) provided for transmitting the writing pressure in the axial direction; and writing pressure detecting means (6) provided in such a manner as to contact the mechanical pencil unit at the writing pressure transmission portion thereof and provided so as to detect only the writing pressure transmitted from the writing pressure transmission portion without receiving from the writing pressure transmission portion the pushing force of pushing the rear end portion of the mechanical pencil unit in the axial direction.

Claim 3

A stylus pen for use in a coordinate reading device, the coordinate reading device being intended, when a reading surface thereof is indicated by the stylus pen, to determine an indicated coordinate according to an induction signal induced in the coordinate reading device, the stylus pen comprising: a pen shaft (1) shaped like a writing instrument, and characterised by further comprising; a mechanical pencil unit (21, 22) supported so that a pen tip portion (21) thereof and a rear end portion (22) thereof partly protrude from the pen shaft respectively, having a pen-core drawout function of drawing out a pen core (24) by pushing the rear end portion, supported so that the pen tip portion resists against the pen shaft with respect to a pushing force of pushing the rear end portion in an axial direction of the pen shaft and supported so as to be slidable and to have elasticity with respect to a writing pressure of pushing the pen tip portion in the axial direction, and having a writing pressure transmission portion (26a) provided for transmitting the writing pressure in the axial direction; a writing pressure transmission member (3) provided in such a manner as to contact the mechanical pencil unit at the writing pressure transmission portion thereof and provided so as to transmit only the writing pressure transmitted from the writing pressure transmission portion without receiving from the writing pressure transmission portion the pushing force of pushing the rear end portion of the mechanical pencil unit in the axial direction; and writing pressure detecting means (6) provided in contact with the writing pressure transmission member for detecting the writing pressure transmitted by the writing pressure transmission member.

Claim 4

A stylus pen for use in a coordinate reading device, the coordinate reading device being intended, when a reading surface thereof is indicated by the stylus pen, to determine an indicated coordinate according to an induction signal induced in the coordinate reading device, the stylus pen comprising: a pen shaft (1) shaped like a writing instrument, and characterised by further comprising; a mechanical pencil unit (21, 22) supported so that a pen tip portion (21) thereof partly protrudes from the pen shaft, having a pen-core drawout function of drawing out a pen core (24) by pushing the rear end portion (22), supported so that the pen tip portion resists against the pen shaft with respect to a pushing force of pushing the rear end portion in an axial direction of the pen shaft and supported so as to be slidable and to have elasticity with respect to a writing pressure of pushing the pen tip portion in the axial direction; a knock member (4) provided at a rear end portion of the mechanical pencil unit and secured thereto or detachably secured thereto, provided so that a rear end portion thereof partly protrudes from the rear end portion of the pen shaft, and having a writing pressure transmission portion (42) provided for transmitting the writing pressure in the axial direction; a writing pressure transmission member (3) provided in such a manner as to contact the knock member at the writing pressure transmission portion thereof and provided so as to transmit only the writing pressure transmitted from the writing pressure transmission portion without receiving from the writing pressure transmission portion the pushing force of pushing the rear end portion of the knock member in the axial direction; and writing pressure detecting means (6) provided in contact with the writing pressure transmission member for detecting the writing pressure transmitted by the writing pressure transmission member.

Claim 5

A stylus pen for use in a coordinate reading device, the coordinate reading device being intended, when a reading surface thereof has been indicated by the stylus pen, to determine an indicated coordinate according to an induction signal induced in the coordinate reading device, the stylus pen comprising: a pen shaft (1) shaped like a writing instrument; a coil (7) coupled to the coordinate reading device, and characterised by further comprising; a mechanical pencil unit (21, 22) supported so that a pen tip portion (21) thereof and a rear end portion (22) thereof partly protrude from the pen shaft respectively, having a pen-core drawout function of drawing out a pen core (24) by pushing the rear end portion, supported so that the pen tip portion resists against the pen shaft with respect to a pushing force of pushing the rear end portion in an axial direction of the pen shaft and supported so as to be slidable and to have elasticity with respect to a writing pressure of pushing the pen tip portion in the axial direction, and having a writing pressure transmission portion (26b) provided for transmitting the writing pressure in the axial direction; and a movable core member (6b) provided in such a manner as to contact the mechanical pencil unit at the writing pressure transmission portion thereof and provided so as to be displaced restorably with respect to the coil by the writing pressure transmitted from the writing pressure transmission portion without receiving from the writing pressure transmission portion the pushing force of pushing the rear end portion of the mechanical pencil unit in the axial direction thereof and so as to cause a change in the inductance of the coil by the displacement.

Claim 6

A stylus pen for use in a coordinate reading device, the coordinate reading device being intended, when a reading surface thereof is indicated by the stylus pen, to determine an indicated coordinate according to an induction signal induced in the coordinate reading device, the stylus pen comprising: a pen shaft (1) shaped like a writing instrument; a coil (6) coupled to the coordinate reading device, and characterised by further comprising; a mechanical pencil unit (21, 22) supported so that a pen tip portion (21) thereof and a rear end portion (22) thereof partly protrude from the pen shaft respectively, having a pen-core drawout function of drawing out a pen core (24) by pushing the rear end portion, supported so that the pen tip portion resists against the pen shaft with respect to a pushing force of pushing the rear end portion in an axial direction of the pen shaft and supported so as to be slidable and to have elasticity with respect to a writing pressure of pushing the pen tip portion in the axial direction, and having a writing pressure transmission portion (26a) provided for transmitting the writing pressure in the axial direction; a writing pressure transmission member (3) provided in such a manner as to contact the mechanical pencil unit at the writing pressure transmission portion thereof and provided so as to be displaced restorably by the writing pressure transmitted from the writing pressure transmission portion without receiving from the writing pressure transmission portion the pushing force of pushing the rear end portion of the mechanical pencil unit in the axial direction thereof; and a movable core member (6) provided in such a manner as to be secured to the writing pressure transmission member for causing a change in an inductance of the coil by displacing with respect to the coil when the writing pressure transmission member being displaced by the writing pressure.

Claim 7

A stylus pen for use in a coordinate reading device, the coordinate reading device being intended, when a reading surface thereof is indicated by the stylus pen, to determine an indicated coordinate according to an induction signal induced in the coordinate reading device, the stylus pen comprising: a pen shaft (1) shaped like a writing instrument; a coil (7) coupled to the coordinate reading device, and characterised by further comprising; a mechanical pencil unit (21, 22) supported so that a pen tip portion (21) thereof partly protrudes from the pen shaft, having a pen-core drawout function of drawing out a pen core (24) by pushing the rear end portion (22), supported so that the pen tip portion resists against the pen shaft with respect to a pushing force of pushing the rear end portion in an axial direction of the pen shaft and supported so as to be slidable and to have elasticity with respect to a writing pressure of pushing the pen tip portion in the axial direction; a knock member (4) provided at a rear end portion of the mechanical pencil unit and secured thereto or detachably secured thereto, provided so that a rear end portion thereof partly protrudes from the rear end portion of the pen shaft, and having a writing pressure transmission portion (42) provided for transmitting the writing pressure in the axial direction; a writing pressure transmission member (3) provided in such a manner as to contact the knock member at the writing pressure transmission portion thereof and provided so as to be displaced restorably by the writing pressure transmitted from the writing pressure transmission portion without receiving from the writing pressure transmission portion the pushing force of pushing the rear end portion of the knock member in the axial direction; and a movable core member (6) provided in such a manner as to be secured to the writing pressure transmission member for causing a change in an inductance of the coil by displacing with respect to the coil when the writing pressure transmission member being displaced by the writing pressure.

Claim 8

A stylus pen for use in a coordinate reading device, the coordinate reading device being intended, when a reading surface thereof is indicated by the stylus pen, to determine an indicated coordinate according to an induction signal induced in the coordinate reading device, the stylus pen comprising: a pen shaft (1) shaped like a writing instrument; a resonance circuit (120) having at least a coil (7) coupled to the coordinate reading device, and characterised by further comprising; a mechanical pencil unit (21, 22) supported so that a pen tip portion (21) thereof and a rear end portion (22) thereof partly protrude from the pen shaft respectively, having a pen-core drawout function of drawing out a pen core (24) by pushing the rear end portion (22), supported so that the pen tip portion resists against the pen shaft with respect to a pushing force of pushing the rear end portion in an axial direction of the pen shaft and supported so as to be slidable and to have elasticity with respect to a writing pressure of pushing the pen tip portion in the axial direction, and having a writing pressure transmission portion (26b) provided for transmitting the writing pressure in the axial direction; and a writing pressure detecting element (10) connected to the resonance circuit and provided in such a manner as to contact the mechanical pencil unit at the writing pressure transmission portion thereof for causing a characteristic change thereof by the writing pressure transmitted from the writing pressure transmission portion without receiving from the writing pressure transmission portion the pushing force of pushing the rear end portion of the mechanical pencil unit in the axial direction.

Claim 9

A stylus pen for use in a coordinate reading device, the coordinate reading device being intended, when a reading surface thereof is indicated by the stylus pen, to determine an indicated coordinate according to an induction signal induced in the coordinate reading device, the stylus pen comprising: a pen shaft (1) shaped like a writing instrument; a resonance circuit (120) having at least a coil (7) coupled to the coordinate reading device, and characterised by further comprising; a mechanical pencil unit (21, 22) supported so that a pen tip portion (21) thereof and a rear end portion (22) thereof partly protrude from the pen shaft respectively, having a pen-core drawout function of drawing out a pen core (24) by pushing the rear end portion, supported so that the pen tip portion resists against the pen shaft with respect to a pushing force of pushing the rear end portion in an axial direction of the pen shaft and supported so as to be slidable and to have elasticity with respect to a writing pressure of pushing the pen tip portion in the axial direction, and having a writing pressure transmission portion (26a) provided for transmitting the writing pressure in the axial direction; a writing pressure transmission member (3) provided in such a manner as to contact the mechanical pencil unit at the writing pressure transmission portion thereof and provided so as to be displaced restorably by the writing pressure transmitted from the writing pressure transmission portion without receiving from the writing pressure transmission portion the pushing force of pushing the rear end portion of the mechanical pencil unit in the axial direction thereof; and a writing pressure detecting element (10) connected to the resonance circuit and provided in such a manner as to contact the writing pressure transmission member for causing a characteristic change thereof by the writing pressure transmitted by the writing pressure transmission member.

Claim 10

A stylus pen for use in a coordinate reading device, the coordinate reading device being intended, when a reading surface thereof is indicated by the stylus pen, to determine an indicated coordinate according to an induction signal induced in the coordinate reading device, the stylus pen comprising: a pen shaft (1) shaped like a writing instrument; a resonance circuit (120) having at least a coil (7) coupled to the coordinate reading device; a mechanical pencil unit (21, 22) supported so that a pen tip portion (21) thereof partly protrudes from the pen shaft, having a pen-core drawout function of drawing out a pen core (24) by pushing the rear end portion (22), supported so that the pen tip portion resists against the pen shaft with respect to a pushing force of pushing the rear end portion in an axial direction of the pen shaft and supported so as to be slidable and to have elasticity with respect to a writing pressure of pushing the pen tip portion in the axial direction; a knock member (4) provided at a rear end portion of the mechanical pencil unit and secured thereto or detachably secured thereto, provided so that a rear end portion thereof partly protrudes from the rear end portion of the pen shaft, and having a writing pressure transmission portion (42) provided for transmitting the writing pressure in the axial direction; a writing pressure transmission member (3e) provided in such a manner as to contact the knock member at the writing pressure transmission portion thereof and provided so as to be displaced restorably by the writing pressure transmitted from the writing pressure transmission portion without receiving from the writing pressure transmission portion the pushing force of pushing the rear end portion of the knock member in the axial direction; and a writing pressure detecting element (10e) connected to the resonance circuit and provided in such a manner as to contact the writing pressure transmission member and for causing a characteristic change thereof by the writing pressure transmitted by the writing pressure transmission member.

Claim 11

A stylus pen for use in a coordinate reading device, the coordinate reading device being intended, when a reading surface thereof is indicated by the stylus pen, to determine an indicated coordinate according to an induction signal induced in the coordinate reading device, the stylus pen comprising: a pen shaft (1) shaped like a writing instrument; a ball pen unit (2f), and characterised by further comprising; a drawout member (4a) provided at a rear end portion of the ball pen unit and secured thereto or detachably secured thereto, provided so that the rear end portion thereof partly protrudes from a rear end portion of the pen shaft, having a function of moving back and forth the position of the ball pen unit as taken relative to the pen shaft by operating a rear end portion thereof, and supported so as to be slidable and to have elasticity with respect to a writing pressure of pushing a pen tip portion of the ball pen unit in an axial direction in a state where the pen tip portion of the ball pen unit is caused to protrude from the pen shaft by operation, and having a writing pressure transmission portion (45) provided for transmitting the writing pressure in the axial direction; and writing pressure detecting means (6) provided in such a manner as to contact the drawout member at the writing pressure transmission portion thereof and provided so as to detect only the writing pressure transmitted from the writing pressure transmission portion without receiving from the writing pressure transmission portion the pushing force of pushing the rear end portion of the drawout member in the axial direction thereof.

Claim 12

A stylus pen for use in a coordinate reading device, the coordinate reading device being intended, when a reading surface thereof is indicated by the stylus pen, to determine an indicated coordinate according to an induction signal induced in the coordinate reading device, the stylus pen comprising: a pen shaft (1) shaped like a writing instrument; a coil (7) coupled to the coordinate reading device; a ball pen unit (2f), and characterised by further comprising; a drawout member (4a) provided at a rear end portion of the ball pen unit and secured thereto or detachably secured thereto, provided so that the rear end portion thereof partly protrudes from a rear end portion of the pen shaft, having a function of moving back and forth the position of the ball pen unit as taken relative to the pen shaft by operating a rear end portion thereof, and supported so as to be slidable and to have elasticity with respect to a writing pressure of pushing a pen tip portion of the ball pen unit in an axial direction in a state where the pen tip portion of the ball pen unit is caused to protrude from the pen shaft by operation, and having a writing pressure transmission portion (45) provided for transmitting the writing pressure in the axial direction; and a movable core member provided in such a manner as to contact the drawout member at the writing pressure transmission portion thereof and provided so as to be displaced restorably with respect to the coil by the writing pressure transmitted from the writing pressure transmission portion without receiving from the writing pressure transmission portion the pushing force of pushing the rear end portion of the drawout member in an axial direction and so as to cause a change in the inductance of the coil by the displacement.

Claim 13

A stylus pen for use in a coordinate reading device, the coordinate reading device being intended, when a reading surface thereof is indicated by the stylus pen, to determine an indicated coordinate according to an induction signal induced in the coordinate reading device, the stylus pen comprising: a pen shaft (1) shaped like a writing instrument; a coil (7) coupled to the coordinate reading device; a ball pen unit (2f), and characterised by further comprising; a drawout member (4a) provided at a rear end portion of the ball pen unit and secured thereto or detachably secured thereto, provided so that the rear end portion thereof partly protrudes from a rear end portion of the pen shaft, having a function of moving back and forth the position of the ball pen unit as taken relative to the pen shaft by operating a rear end portion thereof, and supported so as to be slidable and to have elasticity with respect to a writing pressure of pushing a pen tip portion of the ball pen unit in an axial direction in a state where the pen tip portion of the ball pen unit is caused to protrude from the pen shaft by operation, and having a writing pressure transmission portion (45) provided for transmitting the writing pressure in the axial direction; a writing pressure transmission member (3) provided in such a manner as to contact the drawout member at the writing pressure transmission portion thereof and provided so as to be displaced restorably by the writing pressure transmitted from the writing pressure transmission portion without receiving from the writing pressure transmission portion the pushing force of pushing the rear end portion of the drawout member in an axial direction; and a movable core member (6) provided in such a manner as to be secured to the writing pressure transmission member for displacing with respect to the coil and for causing a change in an inductance of the coil by a displacement when the writing pressure transmission member is displaced by the writing pressure.

Claim 14

A stylus pen for use in a coordinate reading device, the coordinate reading device being intended, when a reading surface thereof is indicated by the stylus pen, to determine an indicated coordinate according to an induction signal induced in the coordinate reading device, the stylus pen comprising: a pen shaft (1) shaped like a writing instrument; a resonance circuit (120) having at least a coil coupled to the coordinate reading device; a ball pen unit (2f), and characterised by further comprising; a drawout member (4a) provided at a rear end portion of the ball pen unit and secured thereto or detachably secured thereto, provided so that the rear end portion thereof partly protrudes from a rear end portion of the pen shaft, having a function of moving back and forth the position of the ball pen unit as taken relative to the pen shaft by operating a rear end portion (4a) thereof, and supported so as to be slidable and to have elasticity with respect to a writing pressure of pushing a pen tip portion of the ball pen unit in an axial direction in a state where the pen tip portion of the ball pen unit is caused to protrude from the pen shaft by operation, and having a writing pressure transmission portion (45) provided for transmitting the writing pressure in the axial direction; and a writing pressure detecting element connected to the resonance circuit and provided in such a manner as to contact the drawout member at the writing pressure transmission portion thereof for causing a characteristic change thereof by the writing pressure transmitted from the writing pressure transmission portion without receiving from the writing pressure transmission portion the pushing force of pushing the rear end portion of the drawout member in the axial direction.

Claim 15

A stylus pen for use in a coordinate reading device, the coordinate reading device being intended, when a reading surface thereof is indicated by the stylus pen, to determine an indicated coordinate according to an induction signal induced in the coordinate reading device, the stylus pen comprising: a pen shaft (1) shaped like a writing instrument; a resonance circuit (120) having at least a coil coupled to the coordinate reading device; a ball pen unit (2f), and characterised by further comprising; a drawout member (4a) provided at a rear end portion of the ball pen unit and secured thereto or detachably secured thereto, provided so that the rear end portion thereof partly protrudes from a rear end portion of the pen shaft, having a function of moving back and forth the position of the ball pen unit as taken relative to the pen shaft by operating a rear end portion thereof, and supported so as to be slidable and to have elasticity with respect to a writing pressure of pushing a pen tip portion of the ball pen unit in an axial direction in a state where the pen tip portion of the ball pen unit is caused to protrude from the pen shaft by operation, and having a writing pressure transmission portion (45) provided for transmitting the writing pressure in the axial direction; a writing pressure transmission member (3c) provided in such a manner as to contact the drawout member at the writing pressure transmission portion thereof and provided so as to be displaced restorably by the writing pressure transmitted from the writing pressure transmission portion without receiving from the writing pressure transmission portion the pushing force of pushing the rear end portion of the drawout member in an axial direction; and a writing pressure detecting element (10) connected to the resonance circuit and provided in such a manner as to contact the writing pressure transmission member for causing a characteristic change by the writing pressure transmitted by the writing pressure transmission member.

Claim 16

A stylus pen for use in a coordinate reading device according to any one of claims 8 to 15, wherein the writing pressure detecting element is a pressure detecting variable resistor (10).

Claim 17

A stylus pen for use in a coordinate reading device according to any one of claims 8 to 15, wherein the writing element is a pressure detecting variable capacitance capacitor.

Claim 18

A stylus pen for use in a coordinate reading device according to any one of claims 12 to 15, wherein the drawout member is a rotating type drawout member having a function of moving back and forth the position of the ball pen unit as taken relative to the pen shaft by rotating the rear end portion thereof about its axis.

Claim 19

A stylus pen for use in a coordinate reading device according to any one of claims 12 to 15, wherein the drawout member is a knocking type drawout member having a function of moving back and forth the position of the ball pen unit as taken relative to the pen shaft by pushing the rear end portion thereof in the axial direction.

Claim 20

A stylus pen for use in a coordinate reading device according to any one of claims 2 to 19, wherein a portion (13) of the pen shaft which supports, with respect to the pushing force of pushing the rear end portion of the mechanical pencil unit or the ball pen unit in the axial direction thereof, the pen tip portion of the mechanical pencil unit or the ball pen unit respectively so that this pen tip portion resists the portion of the pen shaft is detachably fitted with respect to the remaining portion (1g) thereof.

Claim 21

A stylus pen for use in a coordinate reading device, the stylus pen comprising: a pen shaft (1) shaped like a writing instrument, a writing instrument unit (2) housed in the pen shaft, and characterised by further comprising writing pressure detecting means (6) for detecting a pushing force of pushing a pen tip portion of the writing instrument unit in an axial direction without detecting the pushing force of pushing a rear end portion of the writing instrument unit in the axial direction.

Claim 22

A coordinate reading system comprising: a stylus pen as described in any preceding claim; and a coordinate reading device having at least a plurality of sense lines disposed in each of X and Y directions and a detecting means for detecting a position indicated by the stylus pen according to an induction signal induced in the sense lines.