JP3849995B2 - Position indicator - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a position indicator used in a coordinate input device.
[0002]
[Prior art]
The position indicator of the coordinate input device is usually provided with a switch for notifying the tablet of the pen-down state in the position indicator, but is provided with a side switch for notifying the operation state other than the pen-down state. There is something. This side switch is provided at a position where it can be operated with the index finger of the hand holding the position indicator, in the vicinity of the tip of the normal position indicator.
[0003]
As described above, this side switch is convenient because it can notify operation states other than pen-down, but it may be accidentally pressed when the position indicator is being operated. Further, the position of the side switch is fixed, and there is a problem in that it is difficult to operate the side switch because the gripping position of the position indicator and the length of the finger differ depending on the person.
[0004]
[Problems to be solved by the invention]
Therefore, in the present invention, when the position indicator has a side switch function and the use of the side switch function is not desired, the operation mechanism of the switch is configured to be removable from the position indicator, and the side switch function In the case of using the position indicator, it is possible to provide a position indicator that can be operated by attaching the operation mechanism to an arbitrary position of the position indicator with some degree of freedom.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, the present invention provides:
A main body having a circuit configuration for instructing the position of the tablet therein, and an electrode for connecting the circuit configuration and changing the circuit configuration in the housing,
The circuit can be attached to and detached from the main body and can be operated with a predetermined degree of freedom in the axial direction of the main body, and the circuit is brought into contact with the electrode when operating the at least one operating section and the operating section. The switch unit can change the configuration to notify the tablet of the operation state.
[0006]
[Action]
The switch unit is configured so that it can be mounted with a certain degree of freedom in the axial direction of the position indicator according to the length of the operator's finger and the grip of the grip. The switch unit can be removed when the side switch function is not used. When the unit is mounted at a desired position and the operation unit is operated, the circuit configuration inside the position indicator body changes, and the tablet is notified that the side switch has been operated.
[0007]
【Example】
FIG. 1 is an overview of the position indicator of the present invention. 1 is a position indicator main body, and 2 is a switch unit.
FIG. 2 shows a circuit configuration inside the position indicator. The tuning circuit composed of the inductance L0 and the capacitance C0 surrounded by the dotted line in the figure is a basic tuning circuit, and its resonance frequency is f0. From the loop coils in the X-axis and Y-axis directions arranged on the tablet, It is used to tune to a radio wave having a frequency f0 to be transmitted, transmit a radio wave resulting from the tuning to the tablet side, and indicate the position of the position indicator.
[0008]
When the capacitance CD is connected to the tuning circuit by turning on the switch PD, the position indicator emits radio waves having a phase different from that of the radio waves emitted from the tablet. The switch PD is configured to be turned on when the core body 10 provided at the tip of the position indicator is pressed against the tablet. Usually, this switch is called a pen-down switch. It is a switch for the tablet to detect whether or not the position indicator is pressed against the tablet.
The capacitance C1 is connected to the basic tuning circuit via the switch SW1. The switch SW1 is turned on when the operation unit 20 of the switch unit is pressed with a finger.
[0009]
FIG. 3 is a state diagram when the switch unit is removed from the position indicator body 1. As shown in the figure, the position indicator main body has a slightly narrower portion where the switch unit is mounted. Electrodes 31 and 32 are provided on the narrowed portion. The numbers correspond to the numbers in FIG. That is, 31 and 32 are terminal electrodes for connecting the capacitance C1 to the basic tuning circuit.
[0010]
FIG. 4 is an overview of the switch unit. The position indicator body can be inserted into the central hole. As described above, reference numeral 20 denotes a switch operating unit which is pushed down in the direction of pressing when pressed with a finger, and is restored to the original position when the force of the finger is released.
[0011]
5A is a cross-sectional view taken along the line AA ′ of the switch unit, and FIG. 5B is a cross-sectional view of the switch unit mounted on the position indicator main body. In the figure, 21 and 22 are electrodes, and the electrode 21 has a substantially semicircular arc shape extending from the electrode 22. When the operation unit 20 is pushed down with a finger, the electrode 21 is pushed down toward the position indicator main body together with the operation unit so as to come into contact with the electrode 31. The electrodes 31 and 32 are provided with a predetermined length in the axial direction of the position indicator at a slightly narrowed portion of the position indicator housing. For this reason, the switch unit can be mounted in the concave portion in the axial direction of the position indicator with a slight degree of freedom and can be operated. That is, the electrode 32 can come into contact with the electrode 22 when the unit is mounted in the recess, and does not come into contact with the electrode 21. The electrode 21 comes into contact with the electrode 31 as long as the operation unit 20 is pushed down when the switch unit is mounted in the recess.
[0012]
As described above, in the present invention, there are individual differences in how to grip the position indicator and finger length, and it may be difficult to operate if the position of the operation part of the side switch is fixed. The operator can operate the operation unit 20 as a side switch at a position convenient for him.
[0013]
In the present invention, as shown in FIGS. 5A and 5B, the rear end portion of the unit is provided with a screw 25 for tightening and a hole 26 for tightening the screw. The switch unit can be fixed to the recess of the position indicator so that it does not move easily, and the switch can be operated.
[0014]
This side switch is convenient because it can be used in various ways depending on the contents of the application program, such as operation of an airbrush, for example, in CG (computer graphics). However, when handwritten character recognition or the like is performed with a tablet, it may be better that the side switch is not necessarily attached due to a malfunction or the like. In such a case, the switch unit 2 can be detached from the position indicator body and used by loosening the screw 25 described above. In this case, in order to prevent the electrodes 31 and 32 from being soiled by finger grease or dust, a cylindrical rubber 40 that is usually used for preventing slipping of a mechanical pencil or a ballpoint pen can be mounted in the recess. . By doing so, it is possible to exhibit both the effects of preventing dirt and preventing slipping.
[0015]
In the above embodiment, an example in which the switch operation unit is one has been described. However, two or more switch operation units may be used depending on the application. Needless to say, the circuit configuration inside the position indicator main body is an example, and other circuit configurations may be used.
[0016]
【The invention's effect】
According to the present invention, when an operation that does not require the operation of the side switch, for example, when inputting a handwritten character, the operation can be performed by removing the side switch operation unit, and there is no fear of the side switch malfunctioning. . On the other hand, when an operation involving the operation of the side switch is performed, a necessary operation can be appropriately performed by attaching the switch unit. In this case, the position of the operation unit can be easily adjusted according to how the operator grips and the length of the hand.
[Brief description of the drawings]
FIG. 1 is a schematic view of a position indicator of the present invention. FIG. 2 is a circuit configuration diagram inside a position indicator main body. FIG. 3 is a general view of a position indicator main body when a switch unit is removed. [Fig. 5 (a)] AA 'cross-sectional view of the switch unit [Fig. 5 (b)] Cross-sectional view when the switch unit is attached to the position indicator body [Fig. 6] Cylindrical shape for preventing slip Diagram showing rubber attached to the position indicator body [Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Position indicator main body 2 Switch unit 10 Core body 20 Operation part 21,22 Electrode 25 Screw 26 Hole 31, 32 Electrode 40 Cylindrical rubber | gum for slip prevention

Claims (4)

A main body having a circuit configuration for instructing the position of the tablet therein, and an electrode for connecting the circuit configuration and changing the circuit configuration in the housing,
The circuit can be attached to and detached from the main body and can be operated with a predetermined degree of freedom in the axial direction of the main body, and the circuit is brought into contact with the electrode when operating the at least one operating section and the operating section. A position indicator comprising a switch unit capable of changing the configuration and notifying the tablet of the operation state. A recess having a slightly narrowed diameter of the main body is provided near the tip of the main body, and the electrode having a predetermined length in the axial direction of the main body is provided in the recess so as to be separated by two in the axial direction. The position indicator according to claim 1, wherein the switch operation can be freely performed at an arbitrary position in the axial direction. 2. A position indicator according to claim 1, further comprising means for fixing the switch unit to the main body. The position indicator according to claim 2, further comprising means for fixing the switch unit to the concave portion of the main body.

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