CN1912814A

CN1912814A - Pressure trigger luminous pen

Info

Publication number: CN1912814A
Application number: CNA2005100413575A
Authority: CN
Inventors: 鲍炜
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-08-08
Filing date: 2005-08-08
Publication date: 2007-02-14

Abstract

A pen with light being triggered on by pressure is prepared as firm-jointing one of contact pin disc and conduction disc to coupled tube at pen head and another one being erected at back end of pen mouth, fixing three conductive contact pins being distributed in triangle arrangement and pointing them to conduction disc, pressing one end of spring on contact pin disc firm-jointed with coupled tube of pen head, setting internal diameter of pen mouth to be greater than external diameter of coupled tube of pen head and connecting said contact pins to control circuit board through wire.

Description

Pressure trigger luminous pen

Technical field

The present invention relates to a kind of pressure trigger luminous pen, especially a kind of light pen that is used for the computerized information input.

Technical background

Occurred in recent years a kind ofly on the computer projection screen, carrying out virtual book by light pen and writing technology and product with computer operation.China Patent No. ZL 01108047.7, name be called the patent of invention of " be used for computing machine coordinate and control information import System and method for " on the books relevant technologies.The performance of light pen is extremely important in Related product is realized, as a kind of virtual book writing tools, light pen should be luminous according to the stress control of written cap (nib) sensitive and accurately, not only wants sensitive, and will avoid mistake luminous.

China Patent No. ZL 03259582.4, the utility model patent that name is called " inducing luminous pen " put down in writing a kind of can the induction pen head cap vibration when mobile and control luminous light pen implementation on screen.Its shortcoming is, owing to be vibration induction, the user holds a pen, and normally rock or rub also may be sensed and cause mistake luminous.If screen is smooth in addition, then may cause responding to malfunctioning.

Another kind of existing products is to adopt the pressure switch formula light pen of microswitch.Its written cap links to each other with a written interlock pipe, and written interlock pipe can axially be free to slide in a shell.Guan Yuyi microswitch of nib interlock contacts.When written cap was subjected to the pressure of forward, written interlock pipe inwardly slided and the compressing microswitch is opened it, and is luminous as the luminescent device that the signal triggering control circuit drives in the written cap.The shortcoming of this scheme is: if light pen tilts during use, particularly the surface of more slightly making tilt drag in, kinetic friction force strengthens because the suffered axle pressure component of written interlock pipe reduces, and causes written interlock pipe to move, and causes operating malfunctioning.

Summary of the invention

The objective of the invention is to overcome the shortcoming of above-mentioned two kinds of light pen technology, a kind of reliably perception nib cap forward and lateral force are provided, be not prone to the pressure trigger luminous pen that false sense is answered simultaneously again.

For achieving the above object, technical scheme of the present invention is summarized as follows: pressure trigger luminous pen of the present invention comprises written cap, luminescent device, written interlock pipe, a mouth, control circuit board, battery, a shell, also comprise the conductive plate of a surface conduction, a contact pilotage dish and a spring, described contact pilotage dish is fixedlyed connected with written interlock pipe with one of conductive plate, and both another is installed on the rear end face of a mouth; Be fixed with the conductive contact pin of three distributions triangular in shape on the contact pilotage dish and point to conductive plate, described spring one end and a shell relative fixed and the other end is pressed on the contact pilotage dish or conductive plate that fixes with written interlock pipe, mouth internal orifice dimension is greater than the external diameter of written interlock pipe, and the contact pilotage on the contact pilotage dish is linked control circuit board by lead respectively.

Owing to adopted technique scheme, pressure trigger luminous pen provided by the invention can reach such beneficial effect, and promptly when written cap was not subjected to external force, the contact pilotage dish made three contact pilotages contact with conductive plate and mutually reliable conducting simultaneously under the pressure of spring; When written cap is subjected to positive pressure or lateral pressure, to promote contact pilotage dish (if the contact pilotage dish is fixedlyed connected with written interlock pipe) or conductive plate (if conductive plate is fixedlyed connected with written interlock pipe) is rearward mobile or to lopsidedness by written interlock pipe, thereby cause at least one contact pilotage to break away from conductive plate, control circuit can according to whether all contact pilotages all mutual conduction judge whether written cap is subjected to external force, and then it is luminous to control light pen reliably.Since be the rigidity contact, thus the small mobile contact condition variation that can cause contact pilotage and conductive plate, thereby pressure trigger luminous pen of the present invention is very sensitive to the response of written displacement; Because axial or any lateral shift of written cap can both cause contact condition to change, so the pressure of pressure trigger luminous pen of the present invention energy while perception forward and side direction; Owing to be that machinery triggers, avoided vibration induction to trigger the misoperation problem of bringing again simultaneously.

The present invention can also fixedly mount a position-arresting disk on conductive plate, porosely on it make the contact pilotage on the contact pilotage dish can pass freely and can under the pressure of described spring, contact, its objective is and avoid because written cap and coupled rotations such as written interlock pipe cause the lead-in wire winding with conductive plate.

When pressure trigger luminous pen of the present invention is used for the rear-projection board for writing or drawing, written cap 1 can be made the also porose tubular structure of front end, the light of luminescent device can penetrate from the hole of written cap front end, owing to do not need transparent, the nib cap can material such as teflon low with friction factor, wear-resisting and that hardness is lower be made, thereby improve the feel of writing of light pen, wearing quality and eliminate its abrasive action to screen.

Description of drawings

Fig. 1 is the structural profile synoptic diagram of one embodiment of the present of invention;

Fig. 2 is the circuit theory diagrams of Fig. 1 embodiment.

Among the figure: written cap 1, illuminator 2, written interlock pipe 3, a mouth 4, conductive plate 5, position-arresting disk 6, contact pilotage 7, contact pilotage dish 8, spring 9, spring stop 10, control circuit board 11, battery 12, a shell 13.

Embodiment

Below in conjunction with drawings and Examples the present invention is further described.

Fig. 1 has provided the structural profile synoptic diagram of a kind of specific embodiment of pressure trigger luminous pen of the present invention.In the nib cap 1 luminescent device 2 has been installed, the front end of nib interlock pipe 3 links to each other with written cap 1, the rear end is fixedly connected on the contact pilotage dish 8, three contact pilotages 7 have been fixedly mounted on the contact pilotage dish 8, these three contact pilotage distributions triangular in shape, and point to the direction of conductive plate, conductive plate 5 is disks of a surface conduction, and it is fixed on the rear end face of a mouth 4.One end of spring 9 is pressed on the contact pilotage dish 8, and the other end is pressed on the spring stop 10, and when written cap was not subjected to external force, the pressure of spring 9 made all contact conductive plates 5 of three contact pilotages 7.Spring stop 10 is fixtures on the shell 13.The internal orifice dimension of mouth 4 is approximately 5 millimeters, the external diameter of nib interlock pipe is approximately 4 millimeters, therefore be subjected to that external force does that time spent nib interlock pipe not only can vertically move but also can lateral tilt at written cap, thereby at least one and conductive plate are separated.Three contact pilotages 7 are linked circuit board 11 respectively by flexible circuit conductor, and the pin of illuminator 2 also has the flexible circuit conductor that passes written interlock pipe to link circuit board 11, and battery 12 is circuit board 11 power supplies.

In order to prevent that written cap and coupled rotations such as written interlock pipe from causing problems such as lead-in wire winding, introduced a position-arresting disk 6, it is one certain thickness disk, three holes are arranged on it, the position in hole is corresponding with three stylus position, diameter is a bit larger tham the contact pilotage diameter, contacts thereby make three contact pilotages can pass three Kong Eryu conductive plates 5 respectively freely.

In the present embodiment, contact pilotage dish, conductive plate and position-arresting disk all are to make with common printed wiring board, and spring is a tubular stage clip, 0.6 millimeter in its wire footpath.

The schematic diagram of control circuit board 11 mainly is made of microcontroller chip PIC12F675 as shown in Figure 2.Resistance R 1 of its 6th pin connection is linked in three contact pilotages 7 simultaneously, and the R1 other end is linked positive source; Resistance R 2 of the 7th pin connection of PIC12F675 is linked another in the contact pilotage 7 simultaneously, and the R2 other end is also linked positive source; The 3rd of three contact pilotages 7 is connected to ground wire GND.When three contact pilotages 7 all touch conductive plate 5, their mutual conduction, current potential all is the ground wire current potential, thus 6,7 bipods of PIC12F675 all are electronegative potentials; And, then have at least a meeting to become noble potential in 6 of PIC12F675,7 bipods when any one contact pilotage disengaging conductive plate 5.Like this by simple programming to PIC12F675, can whether all contact pilotages all contact with conductive plate according to the electrical level judging of the 6th, 7 pin, thereby judge whether written cap 1 is stressed, and then be operatively connected to illuminator 2 (LED) luminous of PIC12F675 the 2nd pin or extinguish.The resistance of R1, R2 is 300K ohm.The capacity of C1 is 0.1 microfarad.

What adopt among the above embodiment is contact pilotage dish and the written interlock pipe mode that is fixedly connected, but also the contact pilotage dish can be fixed on the rear end face of a mouth, and conductive plate is fixedlyed connected with written interlock pipe, spring is pressed on the conductive plate, can realize purpose of the present invention equally.In addition in Fig. 2, also the end of R1, R2 can be changed into and is connected to power cathode GND by being connected to positive source VCC, the 3rd contact pilotage is connected to VCC, the programming of simultaneously corresponding change PIC12F675 reaches effect same.

Claims

1. pressure trigger luminous pen, comprise written cap, luminescent device, nib interlock pipe, mouth, control circuit board, battery, shell, it is characterized in that, the conductive plate that also comprises a surface conduction, a contact pilotage dish and a spring, described contact pilotage dish is fixedlyed connected with described written interlock pipe with one of conductive plate, both another is installed on the rear end face of described mouth, be fixed with the conductive contact pin of three distributions triangular in shape on the contact pilotage dish and point to conductive plate, described spring one end and a shell relative fixed and the other end is pressed on the contact pilotage dish or conductive plate that fixes with written interlock pipe, described mouth internal orifice dimension is greater than the external diameter of described written interlock pipe, and the contact pilotage on the described contact pilotage dish is linked described control circuit board by lead respectively.

2. pressure trigger luminous pen according to claim 1 is characterized in that, also comprises a position-arresting disk, and it and conductive plate fixedly mount, and be porose on it, makes the contact pilotage on the contact pilotage dish can pass freely through and can contact with conductive plate under the pressure of described spring.

3. according to claim 1 or according to 2 described pressure trigger luminous pens, it is characterized in that a power supply or a ground that is wired to control circuit is arranged in the contact pilotage on the described contact pilotage dish.

4. pressure trigger luminous pen according to claim 1 and 2 is characterized in that, described written cap is a tubular structure that front end is also porose.

5. pressure trigger luminous pen according to claim 4 is characterized in that, described written cap is to be that material is made with teflon.