CN201348773Y

CN201348773Y - Point read pen

Info

Publication number: CN201348773Y
Application number: CNU2009201015140U
Authority: CN
Inventors: 崔伟
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-02-13
Filing date: 2009-02-13
Publication date: 2009-11-18
Anticipated expiration: 2019-02-13

Abstract

The utility model relates to a point read pen matched with a point read machine in use, which aims to solve the problems in the prior point read pen such as slow clicking reaction speed, difficult assembly, unsuitable use habit in clicking hand feeling, and the like. In the point read pen, a pen refill (2) is mounted in a pen holder (1); a pen point extending out of an opening at the lower part of the pen point is arranged at the lower end of the pen refill; a receiving coil (222) and a clicking inspection circuit board (221) are mounted in the pen refill; the pen holder comprises a pen point (11), a pressure sensor (12), a pen sleeve (13) and a pen tail (14); an piezoelectric type pressure sensor (24) is fixed at the lower end of a sensor framework; and the pen refill transmits the pressure of the pen point to the pressure sensor. The wireless point read pen has the advantages of suitable use habit in the clicking hand feeling, high clicking reaction speed, simple production and assembly, and the like.

Description

Talking pen

Technical field:

The utility model relates to a kind of and the matching used talking pen of point reader.

Background technology:

At present, the phonetic study device that has multiple child altogether, children to use on the market, electronic speech book, early learning machine, point reader etc. are arranged, though title difference but principle of work is essentially identical, the saying of " point reader " is occupied leading position now, for convenience, we claim that tentatively it is a point reader.Have a kind of electromagnetic signal of using electromagnetic signal to receive principle to receive pen, for example the patent No. is in 200820092614.7 the utility model patent, to disclose a kind of " signal reception pen device ", and it uses electromagnetic signal to receive pen.

The principle of talking pen is the click action that at first will detect pen, and system begins to scan the position of clicking pen and according to the choice of location pronunciation content of pen then.The device of the detection action of existing talking pen detecting pen is a switch, as in the patent No. being 200820092614.7 utility model patent, a kind of " signal reception pen device " disclosed, its switch use touch-switch, carbon contact conducting silica gel switch, utilize a kind of click action that detects in the switch that light signal forms.

Detect the problem that will solve and talking pen as the click of the electromagnetic pen of board support equipment in addition and click that to detect the problem that will solve basic identical, and being pressure transducer, board electromagnetic pen present situation replaced switch to come the click action of detecting pen, for example in the patent No. is 03158994.4 patent of invention, disclose a kind of " bendable musical form pressure sensitive writing pencil ", it converts pen point pressure to rotating speed, thereby detecting the pressure that rotating speed calculates nib then, judged whether click action according to pen point pressure, and for example in the patent No. is 200610066172.4 patent of invention, disclose a kind of " sensing element of pen-based input device and use thereof ", it uses pressure resistance sensor pen point pressure, has judged whether click action according to pen point pressure.

For using that switch is big as the stroke ratio of the nib of the talking pen of the device of detecting pen click action, click power is big and unshapeliness is compared with using conventional pen (pen, ball pen, pencil etc.), feel is too wide in the gap, does not meet use habit; And the electromagnetic pen of band pressure transducer has solved this problem to a certain extent in the existing board, but does not also reach the degree identical with the conventional pen feel, and existence or problems such as complex structure or support circuit complexity.

The utility model content:

At the defective on the prior art, the problem that is not suitable for use habit that the stroke of the talking pen nib of the utility model solution wireless signal reception principle brings greatly, and structure, support circuit characteristic of simple are arranged.

The scheme that its technical matters that solves the utility model adopts is: construct a kind of talking pen, comprise penholder and pen core, in described penholder pressure transducer is housed, penholder and pen core are formed power transmission device the masterpiece that nib is subjected to are used pressure transducer;

The wireless signal receiving coil is housed in described pen core, is provided with the wiring board of receiving circuit and testing circuit; Described penholder comprises the cap for brush, sensor skeleton, the pen cap, a tail that connects successively, and a cavity is arranged in the penholder, and the top of cavity is a pressure transducer, and pen core places in the penholder cavity, and the nib of pen core lower end is stretched out by the perforate of penholder lower end.

Consider that the user rules with pen in the application of board, the thickness of the corresponding lines of pressure size, this just requires the pressure transducer requirement can detect static power, all the time detected at the pressure that the user starts to write during lifting pen guaranteeing, and in point reader is used, the user clicks with pen, as long as surpassing a predefined value, the pressure of clicking just can think effective click, this requires pressure transducer only to need to detect dynamic power, therefore the pressure transducer in the utility model is selected piezoelectric force transducer, it can satisfy the requirement that detects the dynamic force in the click process, its beneficial effect is described below: compare with other static force sensors, piezoelectric force transducer highly sensitive, apply very little power and just have very big output, on the one hand, the stylus travel of pen can be designed to very little, the output that the user can make less force hit just can to make sensor triggers the testing circuit on the wiring board, make the click good hand touch of pen, on the other hand, the force transducer of other types reaches the level of sensitivity of piezoelectric force transducer, requirement to its supporting circuit will be very high, even can't realize in some cases, traditional talking pen, the scheme of using switching point detection to hit action has the stroke of nib big, diminish the suddenly problem of feel difference of the power that the big the second half of the power that first half term needs in the click process needs uses piezoelectric force transducer then to solve these problems.

In the utility model, preferred version is that the testing circuit of clicking on the detection line plate uses click testing circuit (annexation is seen Fig. 5) and piezoelectric force transducer to play the effect of perception click action together, when the user clicks, click detection line plate output high level signal, system is according to this signal enabling scanning process, the beneficial effect of this scheme is that circuit is simple, with low cost.

Piezoelectric force transducer in the utility model, preferred version is to use piezoelectric ceramic piece, piezoelectric ceramic piece was as microphone device originally, its principle is to apply voltage by the two ends at piezoelectric ceramics, make piezoelectric ceramics distortion, vibrations, and then generation sound, but notice that piezoelectric ceramics on the piezoelectric ceramic piece has the characteristic that can produce piezoelectric voltage when it is applied external force simultaneously in addition, it can play the effect of the piezoelectric force transducer in the utility model; Select for use the beneficial effect of piezoelectric ceramic piece to be, it is easy to purchase, cheap.

In the utility model, select for use piezoelectric ceramic piece as piezoelectric force transducer, corresponding protective device then will be arranged, because piezoelectric ceramic piece is not for pressure detection designs, if there is not protective device can damage piezoelectric ceramic piece, the effect of protective device is the degree of restriction piezoelectric ceramic piece stress and deformation, when degree that the power of clicking can be born greater than piezoelectric ceramic piece, protective device will bear unnecessary power, and piezoelectric ceramic piece stops the more deformation of the degree of depth, thereby the protection piezoelectric ceramic piece is not damaged; Notice that the deformational displacement of piezoelectric ceramic piece and the stroke of pen core equate, so this protective device also plays restriction to the stroke of pen core simultaneously, make the range of pen core controlled.

In the utility model; be included in the piezoelectric ceramic piece center in the protective device of piezoelectric ceramic piece and support the flexible member of piezoelectric ceramic piece; when click action; pen core is applied to the power of clicking at the edge of piezoelectric ceramic piece; flexible member then applies reverse support at the center; when click power hour then the distortion of flexible member less than the gap between piezoelectric ceramic piece and the sensor skeleton; oppositely anchorage force is all born by flexible member; the distortion of flexible member is greater than the gap between piezoelectric ceramic piece and the sensor skeleton when click power is big; then oppositely anchorage force is born jointly by flexible member and sensor skeleton; the reverse anchorage force of sensor skeleton and the click power of pen core point-blank, thereby the protection piezoelectric ceramic piece be not damaged.

During this use was novel, flexible member in the protective device of piezoelectric ceramic piece used elastic silica gel, rubber, and compare cost with spring, shell fragment low and be easy to install.

In the utility model, described receiving coil is provided with circular hole, click the detection line front edge of board and be provided with elongated protrusion, insert in the circular hole of receiving coil, form an assembly, the very thin enameled wire on the welding receiving coil is become easily, compare with click detection line plate separated structures with receiving coil, solved and welded the back at receiving coil and only connect, in being installed to the pen core process, made troubles even problem that enameled wire is torn by enameled wire.

Sum up talking pen of the present utility model, following advantage arranged:

The click feel meets use habit, click-reaction speed is fast, the production assembling is simple, cost is low.

Description of drawings:

The stereographic map of Fig. 1 the utility model talking pen

Fig. 2 is the cut-open view of talking pen shown in Figure 1

Fig. 3 is the pen head part amplification view of talking pen shown in Figure 2

Fig. 4 is the decomposition chart of talking pen shown in Figure 1

Fig. 5 is a wiring board schematic diagram of clicking testing circuit

Fig. 1-the 4th wherein, structural drawing, use identical numbering, coding rule: each numbering among the figure is represented an element, remove numbering and then represent the assembly at this element place after last bit digital, and the like to the last one, the implication of rule numbers representative is listed as follows thus:

1: penholder

11: the cap for brush

12: pressure transducer

13: the pen cap

14: a tail

121: the pressure transducer skeleton

122: the signal conditioning circuit wiring board

123: silica gel pad

124: piezoelectric ceramic piece

2: pen core

21: the pen core skeleton

221: click the detection line plate

222: receiving coil

3: limit spring

Wherein Fig. 5 clicks detection line plate schematic diagram, and the component type corresponding tables of its label and representative is as follows:

R: resistance

C: electric capacity

L: receiving coil

Q2：MOSFET

B1: piezoelectric ceramic piece

Embodiment:

Preferred embodiment of the present utility model is described below:

Shown in Figure 2 as Fig. 1, penholder (1) comprises the cap for brush (11), pressure transducer (12), the pen cap (13), a tail (14) that connects successively.

Pen core (2) comprises pen core skeleton (21), clicks detection line plate (221) and receiving coil (222), clicks the rectangular part in lower end of detection line plate and inserts assembly of receiving coil composition, and this assembly inserts pen core skeleton and forms pen core.

As shown in Figure 3, the cap for brush forms a cavity with the pressure transducer skeleton after buckle is connected, there is a round hole lower end of the cap for brush, piezoelectric ceramic piece (124) is installed in the lower end of sensor skeleton, pen core places in the cavity of penholder, nib is stretched out by the perforate of cap for brush lower end, pen core places the penholder cavity to form the power connecting gear, pen core can only axially-movable in penholder, when being applied on the nib effectively, pen core can be added to the acting force commentaries on classics on the edge of piezoelectric ceramic piece, and silica gel pad (123) is as the strong point of reacting force.

As shown in Figure 3, a limit spring (3) is arranged between the middle part of pen core and the cap for brush, an end of limit spring withstands pen core, one end withstands the cap for brush, the deformation force of limit spring installment state is the situation that holds up pen core greater than the gravity of pen core, and pen core closely is connected with piezoelectric ceramic piece.

As shown in Figure 3; the core that sensor skeleton lower end holds piezoelectric ceramic piece (124) has a silica gel pad (123); its effect is the space of reserving distortion to piezoelectric ceramic piece, limits the damage that its distortion is not subjected to excessive power again, plays the effect of protection piezoelectric ceramic piece.

As shown in Figure 3, be provided with hollow round hole in the middle of the receiving coil (222), clicking detection line plate (221) front end has elongated protrusion, inserts in receiving coil (222) circular hole, and receiving coil is welded to clicks on the detection line plate, and use wringing fit to form an assembly.

As shown in Figure 3, there is a locating slot nib inside, and there is the detection line of click integrated circuit board button at the middle part, clicks detection line plate and receiving coil assembly and inserts along locating slot, is positioned in the buckle at nib middle part.

As shown in Figure 3, be fixed with signal condition wiring board (122) in the central slot of pressure transducer skeleton (121).

As shown in Figure 2, the upper end of the cap for brush is goed deep in the lower end of pressure transducer skeleton (121), and snaps into position is arranged, and the cap for brush closely is connected with pressure transducer (12).

As shown in Figure 2, the top of pressure transducer skeleton (121) has buckle to be connected with the pen cap (13), and the sensor skeleton closely is connected with the pen cap, and the pen cap entangles the part that sensor skeleton and the cap for brush expose.

As shown in Figure 2, a tail (14) has a circular port, uses wringing fit to be connected on the circular projection of the pen cap (13), plays the effect of the buckle between the overburden pressure sensor skeleton (121) and the pen cap.

Piezoelectric ceramic piece uses insulated wire to be connected to and clicks on the detection line plate, is provided with trough on the sensor skeleton, and the line of clicking the detection line plate is connected on the signal condition wiring board (122) by trough.

As shown in Figure 4, the whole erection process is, detection line plate (221) be will click and receiving coil (222) and welding inserted, with piezoelectric ceramic piece, detection line plate (221) uses insulated wire to be welded on the signal conditioning circuit wiring board (122), circuit board module (22) is inserted pen core skeleton (21) form pen core (2), silica gel pad (123) is snapped in the sensor skeleton, piezoelectric ceramic piece (124) is snapped in the piezoelectric ceramics film trap of sensor skeleton (pressure), signal conditioning circuit wiring board (122) is snapped in the pressure transducer skeleton (121), at this moment pen core and pressure transducer rely on a loose assembly of formation that stretches out of piezoelectric ceramic piece line and pen core upper end, limit spring (3) is enclosed within on the pen core skeleton (21), to insert the cap for brush (11) with top, form one and connect assembly closely this moment, next the pen cap (13) is enclosed within on the above assembly, at last a tail (14) is enclosed within on the pen cap, installation, whole process is simple, smooth.

The annexation of click detection line plate, receiving coil, piezoelectric ceramic piece as shown in Figure 5, R5, R6, Q2, B1 form the click testing circuit, its output voltage uprises and triggers MOSFET (Q2) conducting output high level when piezoelectric ceramic piece (B1) is subjected to impacting because of the user clicks, MOSFET when not having click action (Q2) conducting ends, pull down resistor R1 pulls into low level with output, and the effect of R5, R6 is to provide dc point for piezoelectric ceramic piece.

The signal conditioning circuit plate will be handled the signal of next receiving coil, and the connecting interface cable, in section outlet that waits of pen, outlet comprises power supply lead wire, hit the output of testing circuit, signal condition signal output, it is 200820092614.7 patent that the details of signal conditioning circuit sees also the patent No..

Claims

1, a kind of talking pen comprises penholder and pen core, in described penholder pressure transducer is housed, and the electromagnetic induction signal receiving coil is housed in described pen core; It is characterized in that:

Described penholder and pen core comprise that power transmission device uses pressure transducer with the masterpiece that nib is subjected to;

Described pressure transducer uses piezoelectric pressure indicator.

2, talking pen according to claim 1 is characterized in that, comprises the testing circuit wiring board in the described pen core, and testing circuit on the testing circuit wiring board and piezoelectric force transducer are formed the click action detecting unit together.

3, talking pen according to claim 1 is characterized in that, described piezoelectric pressure indicator uses piezoelectric ceramic piece.

4, talking pen according to claim 3 is characterized in that, described penholder is provided with that piezoelectric ceramic piece is fixed and protective device, the range of protective device restriction nib, the deformation displacement that the range of nib is born less than the piezoelectric ceramic piece maximum.

5, talking pen according to claim 4 is characterized in that, described piezoelectric ceramic piece is fixing to comprise that with protective device flexible member supports.

6, talking pen according to claim 5 is characterized in that, described flexible member supports and uses silica gel pad.

7, talking pen according to claim 1 is characterized in that, is provided with limit spring between penholder and the pen core, and the distortion elastic force after limit spring is installed combines closely pen core and pressure transducer greater than the gravity of pen core.

8, wireless talking pen according to claim 1 is characterized in that, is provided with circular hole in the middle of the receiving coil, and the wiring board front end is provided with elongated protrusion, inserts in the circular hole of receiving coil, forms an assembly.