JP2010262499A - Light pen - Google Patents

Abstract

The light-emitting unit emits light when the input chip is retracted by writing pressure, and the light pen that can emit light even if the means provided on the side of the pen body is manually operated is further simplified in wiring and circuit. A light pen that can be easily assembled without arranging a substrate provided with the like and can be downsized is obtained.
A holding member 5 made of an insulating material holding a light emitting portion 6 is provided at the rear end of an input chip 4 disposed on a pen body made of a conductive material. A button switch member 13 is provided on the side of the holding member 5 so that the holding member 5 moves backward when pressed. When the button switch member 13 moves backward, one connection terminal 15 of the light emitting unit 6 is electrically connected to one electrode 29 of the battery 27. It is made to contact | abut to the switch body 21 connected to. The other connection terminal 16 of the light emitting unit 6 is always connected to the pen body 2. A main switch body 35 made of a conductive material capable of abutting against the other electrode 37 of the battery 27 when the knock body 31 is advanced is provided so that a part thereof abuts against the inner wall surface of the pen body 2.
[Selection] Figure 1

Description

  The present invention relates to a light pen that emits light at the tip of an input chip for inputting information to a display panel or an input panel of an information terminal.

  In a light pen that emits light at the tip of the input chip for inputting information to the display panel or input panel of the information terminal, the circuit is electrically turned on when the input chip retreats due to writing pressure. A light pen that emits light from a light emitting unit disposed therein and is irradiated with light from an input chip is conventionally known.

  In such a light pen, Japanese Patent Application Laid-Open No. 2005-352836 proposes a pen pressure switch based on the pen pressure and a light pen in which a manual switch is provided on the side of the pen body so that the light emitting unit emits light manually. Has been. The technology disclosed in the invention includes a first switch (writing pressure switch) that causes the light emitting unit to emit light when the pen tip receives writing pressure and moves to the rear end side in the axial direction of the pen body. The second switch (manual switch) that emits the light emitting unit that emits light provided inside the (input chip) is connected in parallel, and the power supply unit is connected to the first switch and the second switch connected in parallel. And a substrate on which a circuit connecting the light emitting unit is formed is fixed inside the pen body.

  With this structure, if two switches are provided on the pen body, extra parts and wiring are required, and the shaft diameter of the pen body is inevitably thick and the structure is complicated, but each part is compact inside the pen body. It is possible to reduce the number of wires and parts, thereby reducing the size and preventing the occurrence of problems such as disconnection when the movable part is moved.

  However, even the light pen having the above-described structure requires three switches as a switch: a pen pressure switch, a manual switch, and a main power switch. The operation is to turn on the main power switch and connect the power source unit and the light emitting unit by operating the manual switch, or by connecting the power source unit and the light emitting unit by retreating the input chip by writing pressure, The light emitting part emits light and irradiates light from the input chip. A switch member such as a push button switch or a slide type switch or a lead wire for connecting the power supply part and the light emitting part in the manual switch is commercially available. It is necessary and it is necessary to form a circuit and perform wiring, and it cannot be said that assembly is easy.

JP 2005-352836 A

  The problems to be solved by the present invention include a first switch (writing pressure switch) for causing a light emitting unit to emit light when an input chip receives writing pressure and moves to the rear end side in the axial direction of the pen body, and a pen body. In a light pen provided with a second switch (manual switch) for manually causing the light emitting part to emit light at any time on its side, the wiring in the switch and the like is further simplified, and a circuit board is not provided. To obtain a light pen that can be easily assembled and each part can be stored compactly in the pen body and can be miniaturized.

The present invention
“1. An input tip capable of transmitting light is slidable in the front-rear direction at the tip of the pen body made of a conductive material, and at least the tip is inserted into the input tip at the rear end of the input tip. It is made of an insulating material that holds the light emitting part and has a slide hole on the side part that has a rear side wall surface located on the opposite side of the input chip as an inclined surface that is gradually separated from the input chip toward the outside in the axial direction. The holding member is arranged in contact with the input chip so as to be slidable in the front-rear direction, and a locking hole penetrating the inside and the outside is provided in a portion facing the sliding hole on the side of the pen body, and is engaged with the sliding hole. The stop hole is provided with a button switch member that is slidable in the axial radial direction along the inclined surface of the slide hole and partially protrudes outward from the outer surface of the pen body. One connected terminal protrudes backward from the rear end of the holding member The other connection terminal connected to the other terminal of the light emitting unit is always electrically connected to the pen body, and the switch is configured to be connected to / separated from one connection terminal of the light emitting unit behind the holding member. The switch body made of a conductive material is placed away from one connection terminal of the light emitting unit and electrically connected to one electrode of the battery of the power supply unit, and moves back and forth in the rear end of the pen body A feeding mechanism for moving a main switch body made of a conductive material which constitutes a switch by electrically connecting / separating to the other electrode of the battery of the power supply unit directly or indirectly back and forth And at least a part of the main switch body comes into contact with the inner wall surface of the pen body when the main switch body moves forward, and the main switch body is connected to the battery other than the battery by operating the feeding mechanism. In a state of being electrically connected to the electrode, the holding member is retracted by pressure applied to the input chip or by pressing the button member, and one connection terminal connected to one terminal of the light emitting unit and the switch body Pen light that light emitting part emits light by abutting. "
It is.

  In the present invention, “electrically connected” means that the members to be connected are brought into contact with each other directly by abutting each other without using a conductor or the like, or through a conductive member and / or a conductor, etc. That is. Examples of the conductive material include stainless steel, conductive plastic, and copper.

The feeding mechanism in the present invention is a feeding mechanism that causes the tip of the writing body in the writing tool to protrude and retract from the tip opening of the shaft tube, and is a mechanism well known in the technical field of writing tools. For example,
1) A shaft cylinder is composed of a barrel shaft (also referred to as a front shaft) and a rotary shaft (also referred to as a rear shaft) that is rotatably connected to the rear of the barrel shaft, and the rotary shaft is rotated with respect to the barrel shaft. A feeding mechanism called a “rotary type” in which the writing body is advanced by the cam slope provided in the rotating shaft, and the tip of the writing body protrudes from the tip opening of the shaft tube,
2) A cam cam, a fixed cam provided in the shaft cylinder so as to be movable back and forth along a cam groove having a protrusion engaging with the cam groove on the circumferential side and having a concavo-convex portion at the tip, and the cam A rotating cam provided on the peripheral side of the cam projection that engages with the groove and having a meshing portion that meshes with the concavo-convex portion, and is provided so as to be movable back and forth along the cam groove; A feeding mechanism structure called a “knock type” composed of a knock body for pressing,
3) A clip is attached to the knock body arranged at the rear end of the shaft tube, a locking protrusion protruding toward the surface of the shaft tube is provided at the tip of the clip piece, and the locking protrusion is engaged with the side surface of the shaft tube. By providing a locking portion to stop, the knock body is advanced, and the locking projection is locked to the locking portion, thereby maintaining the state where the writing tip of the writing body protrudes from the tip opening of the shaft tube. The feeding mechanism structure called the “knock type” of the structure,
4) At the portion located in the shaft cylinder of the knock body arranged at the rear end of the shaft cylinder, the one end is a free end and the tip of one end is in contact with the inner wall surface of the shaft cylinder in a pressed state. A locking piece having a locking projection is provided on the part, a locking hole for locking the locking projection is provided on the side surface of the shaft cylinder, and the knocking body is advanced to lock the locking projection in the locking hole. Thus, there is a feeding mechanism called “knock type” having a structure in which the writing tip of the writing body is maintained in a state of protruding from the tip opening of the shaft tube.

  In the present invention, it is necessary to always connect the other connection terminal connected to the other terminal of the light emitting unit to the pen body, but as the means, the other connection terminal is formed in a flat plate shape or a rod shape, Bending the tip and slidably abutting the bent part against the inner wall surface of the pen body, or using the other connection terminal as a conductor, does not prevent the conductor from sliding forward and backward. There is a means for connecting to the inner wall surface of the pen body.

  Since the light pen of the present invention has the structure as described above, the light emitting part emits light when the input chip receives the pen pressure and moves to the rear end side in the axial direction of the pen body, and further provided on the side part of the pen body. A light pen capable of emitting light even when the button switch member is pressed can be easily assembled without arranging many conductors and without providing a circuit board or the like. In addition, since each component can be stored in an orderly and compact manner inside the pen body, the size can be reduced.

It is the longitudinal cross-sectional view which cut the principal part of the light pen which shows the Example of this invention. In FIG. 1, it is the longitudinal cross-sectional view which cut the principal part of the light pen which shows a state when the main switch for making a light emission part light-emit is turned on. In FIG. 1, it is the longitudinal cross-sectional view which cut the principal part of the light pen which shows a state when a light emission part was made to light-emit.

  The present invention does not provide a second switch (manual switch) based on a circuit for manually causing the light emitting unit to emit light at any time on the side of the pen body, but the input chip recedes upon receiving pen pressure and emits light. The holding member holding the light emitting part arranged at the rear end of the input chip is structured so that the holding member also moves backward in conjunction with the backward movement of the input chip, and one connection terminal of the light emitting part is connected to the power supply part. The problem is solved by providing the light emitting portion to emit light by being electrically connected to one electrode of the battery and providing means for manually retracting the holding member on the side of the pen body.

  An embodiment of the light pen of the present invention will be described with reference to the drawings. In the light pen 1 of this embodiment, the pen body 2 is formed of a conductive material. The pen body 2 is provided by screwing a front shaft portion 2a and a rear shaft portion 2b open at both ends, and a front end portion 3 formed in a tapered shape is screwed to the tip of the front shaft portion 2a. It is.

  In the front opening 3, a part of a small-diameter front end 4 a protrudes outward from the front end opening 3 a of the front end 3, and has a light emitting section accommodating chamber 4 b or is opaque to transmit light. The formed input chip 4 is slidably inserted in the front-rear direction (left-right direction in FIG. 1). At the rear end of the input chip 4, a cylindrical holding member 5 formed of an insulating material is brought into contact with the rear end of the input chip 4 so as to be retractable in conjunction with the retreat of the input chip 4 (right side in FIG. 1). The front shaft portion 2a is slidably arranged. A light emitting unit 6 made of a light emitting diode is attached to the distal end of the holding member 5, and the distal end of the light emitting unit 6 is accommodated in the light emitting unit accommodating chamber 4 b of the input chip 4.

  On the side of the holding member 5, the rear side wall surface 7 opposite to the input chip 4 is formed as an inclined surface 8 that is gradually inclined away from the input chip 4 toward the outside in the axial radial direction. A hole 9 and a terminal hole 10 that opens and penetrates the inner wall surface of the front shaft portion 2a of the pen body 2 are provided. On the side of the front shaft portion 2 a of the pen body 2 facing the slide hole 9, a locking hole 11 penetrating inside and outside is provided, and the rear shaft portion of the pen body 2 in the axial direction with respect to the slide hole 9. It is provided at a position slightly close to the 2b side. The sliding hole 9 and the locking hole 11 have a contact portion 12 inclined in the same direction as the inclined surface 8 slidable along the inclined surface 8, and a part thereof is a front shaft portion of the pen body 2. A button switch member 13 that protrudes outward from the outer surface of 2a and pushes back the holding member 5 by pressing a part of the protrusion is inserted. Since the button switch member 13 is provided at a position where the position of the locking hole 11 is shifted in the axial direction with respect to the sliding hole 9, the front side wall surface 11 a on the input chip 4 side of the locking hole 11 and the sliding hole are provided. The button switch member 13 is supported by the inclined surface 8 of the hole 9 so as not to enter the slide hole 9 unless pressed.

  The front shaft portion 2a of the pen body 2 serves as a grip portion for gripping the penlight 1, and a grip member 14 formed of silicon rubber or the like is attached to the front shaft portion 2a to cover the button switch member 13. .

  Flat connection terminals 15 and 16 are connected to the terminals 6 a and 6 b of the light emitting section 6, and one connection terminal 15 passes through the space 5 a of the cylindrical holding member 5 and the rear end surface of the holding member 5. It protrudes rearward from 5b, and the front end is bent at a right angle to form a contact front end 17. The other connection terminal 16 is bent at a position facing the terminal hole 10 provided in the holding member 5 and inserted into the terminal hole 10, and the tip is the rear side opposite to the input chip 4 (right side in FIG. 1). The sliding tip 18 is bent toward the front, and is in contact with the inner wall surface of the front shaft 2a of the pen body 2 so as to be slidable back and forth in the axial direction. The other terminal 6 b of the light emitting unit 6 is always electrically connected to the conductive pen body 2.

  A fixing member 19 formed of an insulating material having both ends opened is press-fitted into the front shaft portion 2a of the pen body 2 behind the holding member 5 (right side in the drawing) from the rear end opening portion 2aa of the front shaft portion 2a. The flange portion 20 formed at the rear end of the fixing member 19 is fixed in contact with the end surface of the rear end of the front shaft portion 2a.

  In the fixing member 19, a switch body 21 made of a conductive material constituted by a small-diameter tip 21a, an intermediate portion 21b having a diameter larger than the tip portion 21a, and a rear end portion 21c having a diameter larger than the intermediate portion 21b. These are loosely fitted with the tip 21a protruding forward from the fixing member 19. In order to prevent the switch body 21 from coming out of the front end of the fixing member 19, the front end of the rear end portion 21 c is provided in contact with the stepped portion 22 formed in the fixing portion 19. A plug member 23 having both ends opened is screwed to the fixing member 19 at the rear of the switch body 21 so as not to come out from the rear end.

  The plug member 23 is formed of a conductive material having a detachment preventing portion 24a that is slidable and has a larger diameter than the opening 23a so as not to come out of the opening 23a at the rear end of the plug member 23. A battery connection terminal 24 is provided. A conductive spring 25 is stretched between the switch body 21 and the battery connection terminal 24. Further, a spring 26 is stretched between the fixing member 19 and the holding member 5, and the holding member 5 and the input chip 4 are biased forward (left side in the figure).

  At the rear end of the fixing member 19, a battery case 28 formed of an insulating material containing a battery 27 serving as a power supply unit is connected and arranged, and the battery connection terminal 24 is connected to one electrode 29 of the battery 27. Connected.

  The rear end portion 2b of the pen body 2 has a cam groove, a fixed cam, and a cam projection that engages with the cam groove, which are known from a writing tool feeding mechanism, on the peripheral side portion. A `` knock type '' composed of a rotating cam that has a meshing portion that meshes with the fixed portion and that is connected to the fixed cam and is movable back and forth along the cam groove, and a knock body for pressing the fixed cam A so-called feeding mechanism is provided. More specifically, the cam groove 30 is formed on the inner wall surface of the rear shaft portion 2b, the knock body 31 is engaged with the cam groove 30 with the fixed cam 32 provided integrally with the tip of the knock body 31, The rear end portion 31a of the knock body 31 is arranged to protrude outward from the rear end opening portion 2bb of the rear shaft portion 2b, and the rotating cam is located in front of the fixed cam 32 (on the input chip 4 side, left side in FIG. 1). 33 is arranged with the rear end 33 a inserted into the knock body 31.

  In front of the rotating cam 33, a rod-shaped main switch body 35 formed of a conductive material having a flange portion 34 abutting against the inner wall surface of the rear shaft portion 2b of the pen body 2 is disposed. The rear end portion 35 a is in contact with the front end and is inserted into the rotary cam 33 from the flange portion 34. The main switch body 35 is moved forward (in the input chip 4 side, left side in FIG. 1) in conjunction with the rotary cam 33 by an operation of pressing the knock body 31, and an opening formed at the battery case 28 at the tip. 36 is provided so as to be brought into contact with the other electrode 37 of the battery 27.

  The rear shaft 2b of the pen body 2 is provided with a clip 38 similar to the clip in the writing instrument.

  The operation for the light emitting unit 6 to emit light in the light pen 1 of the present embodiment will be described. First, as shown in FIG. 2, the knock body 31 is pressed to advance the rotary cam 33 and the main switch body 35. The tip of the main switch body 35 is brought into contact with the other electrode 37 of the battery 27. The rotating cam 33 and the main switch body 35 are held at the advanced positions by the action of the rotating cam 33 and the cam groove 30. Although the knock body 31 is in a state of being returned to the original position in FIG. 2, for the sake of convenience, the knock body 31 is manually returned to the original position, and is not configured to automatically return to the original position. .

  In the above state, as shown in FIG. 3, the pen main body is moved by the retraction of the input chip 4 due to the writing pressure when inputting information to the input panel (not shown) or the button switch member 13 via the grip member 14. 2, the holding member 5 holding the light emitting unit 6 is retracted, and the contact tip 17 of one connection terminal 15 connected to the terminal 6 a of the light emitting unit 6 is brought to the tip of the switch body 21. The terminal 6a of the light emitting section 6, one connection terminal 15, the switch body 21, the spring 25, the battery connection terminal 24, one electrode 29 of the battery 27, the other electrode 37 of the battery 27, the main switch body 35, The rear shaft portion 2b, the front shaft portion 2a of the pen body 2, the other connection terminal 16, and the terminal 6b of the light emitting portion 6 are electrically connected, and the light emitting portion 6 emits light. When the writing pressure on the input chip 4 or the pressure on the button switch member 13 is released, the holding member 5 is advanced by a spring 26 stretched between the holding member 5 and the fixing member 19 and connected to the terminal 6a of the light emitting unit 6. The contact tip 17 of the one connection terminal 15 is separated from the switch body 21, and the light emitting unit 6 is turned off.

  Each component can be stored in an orderly and compact manner inside the pen body and can be miniaturized. Therefore, by reducing the shaft diameter of the pen body, it can be applied to a light pen as a portable input device.

DESCRIPTION OF SYMBOLS 1 Light pen 2 Pen main body 4 Input chip 5 Holding member 6 Light emission part 7 Rear side wall surface 8 Inclined surface 9 Slide hole 11 Locking hole 13 Button switch member 15 One connection terminal 16 The other connection terminal 21 Switch body 26 Spring 29 One electrode 35 Main switch body 37 The other electrode

Claims (1)

  An input chip capable of transmitting light is slidable in the front-rear direction at the front end portion of the pen body made of a conductive material, and a light emitting section having at least the front end portion inserted into the input chip is disposed at the rear end of the input chip. Holding a holding member made of an insulating material having a sliding hole that has an inclined surface that is gradually separated from the input chip as the rear side wall surface located on the side opposite to the input chip is outward in the axial radial direction. , Slidable in the front-rear direction, placed in contact with the input chip, and provided with a locking hole penetrating the inside and outside of the pen body on the side facing the sliding hole. A button switch member is provided which is slidable in the axial radial direction along the inclined surface of the slide hole and partially protrudes outward from the outer surface of the pen body, and is connected to one terminal of the light emitting unit Project the rear connection terminal from the rear end of the holding member. Conductive material that always connects electrically the other connection terminal connected to the other terminal of the light emitting unit to the pen body, and forms a switch by connecting / separating with one connection terminal of the light emitting unit behind the holding member The switch body made of is arranged in a state separated from one connection terminal of the light emitting unit and electrically connected to one electrode of the battery of the power supply unit, and moved back and forth in the rear end portion of the pen body. The main switch body made of a conductive material that constitutes a switch by electrically connecting / disconnecting to the other electrode of the battery of the power supply unit is connected to a feeding mechanism that moves the main switch body directly or indirectly back and forth. In addition, when the main switch body moves forward, at least a part of the main switch body comes into contact with the inner wall surface of the pen body, and the main switch body is operated by the feeding mechanism so that the main switch body is connected to the other battery. The holding member is retracted by the pressure applied to the input chip or by pressing the button member while being electrically connected to the input chip, so that one of the connection terminals connected to one terminal of the light emitting unit and the switch body are in contact with each other. A penlight that emits light when touched.

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