CN205334296U - Protective sheath that can write - Google Patents

Abstract

The utility model discloses a protective sheath that can write. This protective sheath that can write is including the cover body, the cover body is provided with and is used for responding to the sensor matrix that the writing pen was write, the cover body still is provided with connecting portion, when when having placed intelligent terminal in the protective sheath, the sensor matrix passes through connecting portion with intelligent terminal links to each other. Through opening the protective sheath, can use supporting lettering pen to write at paper on the protective sheath upper berth, intelligent terminal can detect lettering pen writing content, can realize placing the paper and truly write on the protective sheath.

Description

A kind of protection set write

Technical field

This utility model is related to protection of set field, particularly relates to a kind of protection set write。

Background technology

Current flat board is extensively used as a kind of intelligent terminal, but handwriting input always is a primary demand, satisfied use all handwriting inputs be typically in screen itself or separable peripheral hardware, and generally not there is true writing effect based on writing of screen, only pass through screen feedback, separate outer being located at and do not possess portability, therefore do not have one at present in conjunction with flat board, it is possible to it is preferable that paper using pen carries out the scheme write。

Utility model content

This utility model provides a kind of protection set write, it is possible to achieve places paper on the protective sleeve and truly writes。

A kind of protection set write, including body, described body is provided with for sensing the sensor matrices that writing pencil is write；Described body is additionally provided with connecting portion；When being placed with intelligent terminal in described protection set, described sensor matrices is connected with described intelligent terminal by described connecting portion。

Wherein, described sensor matrices is the some groups of inductance coils being arranged at PCB。

Wherein, described inductance coil is arranged anyhow。

Wherein, described body includes supporting the base plate of described intelligent terminal, panel, folding portion, and base plate is connected by folding portion with panel, and described sensor matrices is arranged at panel。

Wherein, described connecting portion is FPC。

Wherein, the outside of described base plate and described panel is provided with Magnet, and when described protection set closes, base plate and panel are attracted by the described Magnet of arranged outside。

Wherein, also including writing pencil, writing pencil is provided with the LC resonant circuit for resonating with sensor matrices, and the resonant frequency of described LC resonant circuit is:

$f=\frac{1}{2\mathrm{\π}\sqrt{L_1{C}_{total}}};$

Wherein, described inductance L1 is arranged on the circumference of nib of writing pencil。

The beneficial effects of the utility model are: a kind of protection set write that this utility model provides, including body, described body is provided with for sensing the sensor matrices that writing pencil is write；Described body is additionally provided with connecting portion；When being placed with intelligent terminal in described protection set, described sensor matrices is connected with described intelligent terminal by described connecting portion。By opening protection set, it is possible to spreading paper on the protective sleeve, use supporting lettering pen to write, intelligent terminal can detect lettering pen written contents, it is possible to achieve place paper on the protective sleeve and truly write。

Accompanying drawing explanation

In order to be illustrated more clearly that the technical scheme in this utility model embodiment, the accompanying drawing used required in the description of this utility model embodiment will be briefly described below, apparently, accompanying drawing in the following describes is only embodiments more of the present utility model, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to the content of this utility model embodiment and these accompanying drawings。

Fig. 1 is the structural representation of the protection set write described in the utility model。

Fig. 2 is the structural representation of writing pencil described in the utility model。

Fig. 3 is the circuit diagram of writing pencil described in the utility model。

Accompanying drawing labelling

100, protection set body, 110, base plate, the 111, first Magnet; 112, the second Magnet, 113, intelligent terminal's display screen, 120, panel; 121, the 3rd Magnet; 122, the 4th Magnet, 123, write district, 200, writing pencil; 210, nib; 220, wire-wound inductor, 230, pressure-induced capacitance, 240, pcb board

Detailed description of the invention

Below in conjunction with accompanying drawing, detailed description of the invention of the present utility model is described in detail。

A kind of protection set write of the present embodiment, including body 100, described body 100 is provided with for sensing the sensor matrices that writing pencil 200 is write；Described body 100 is additionally provided with connecting portion；When being placed with intelligent terminal in described protection set, described sensor matrices is connected with described intelligent terminal by described connecting portion。

Concrete; intelligent terminal combines with protection set; it is convenient for carrying; and body 100 is provided with for sensing the sensor matrices that writing pencil 200 is write; the person's handwriting signal that writing pencil 200 is write can be sensed rapidly accurately; when protect set write district 123 spread paper write time, sensor matrices senses that the person's handwriting signal that writing pencil 200 is write shows on intelligent terminal's display screen 113。

Described sensor matrices is the some groups of inductance coils being arranged at PCB。

Concrete, described PCB is printed circuit board (PCB) (PrintedCircuitBoard)。

Described inductance coil is arranged anyhow。

Concrete, described inductance coil is anyhow placed with and is beneficial to whole panel 120 and produces electromagnetic induction signal, better makes the LC resonant circuit described writing pencil 200 within produce resonance, thus the information that acquisition writing pencil 200 is write fast and accurately。

Described body 100 includes supporting the base plate 110 of described intelligent terminal, panel 120, folding portion, and base plate 110 is connected by folding portion with panel 120, and described sensor matrices is arranged at panel 120。

Described connecting portion is FPC。

Concrete, described FPC is: flexible printed wiring board (FlexiblePrintedCircuit)；The bottom of described protection set is arranged on the back side of intelligent terminal; the FPC of protection set is pressed on the mainboard of intelligent terminal; described sensor matrices is arranged at panel 120; the convenient electromagnetic induction signal obtained to protection set sensor matrices that received by FPC of intelligent terminal, the written handwriting information of the writing pencil 200 of protection set sensing is also convenient for being sent to intelligent terminal by FPC。Plastic cement cover plate is pressed in FPC correspondence position, is fixed by buckle and screw lock, be conducive to consolidating of FPC and stablizing of transmission performance。

The outside of described base plate 110 and described panel 120 is provided with Magnet, and when described protection set closes, base plate 110 and panel 120 are attracted by the described Magnet of arranged outside。

Concrete, the relevant position in the outside of described base plate 110 and described panel 120 is provided with Magnet, Magnet in the centre position in outside or can be arranged on the two ends in outside or be simultaneously located at two ends and centre position etc. by concentrated setting, and concrete arranging is determined according to the real needs of product；Described base plate 110 is identical with the number of Magnet on described panel 120, it is possible to being 1,2,3,4 etc., concrete number can set according to the demand of product。

Preferably; as shown in Figure 1; the relevant position in the outside of described base plate 110 and described panel 120 is provided with 2 blocks of Magnet 111,112,121,122; in time protecting the base plate 110 overlapped and panel 120 altogether; Magnet 111,112,121,122 can be passed through base plate 110 and panel 120 are fixed; save space, it is simple to carry and be conducive to the intelligent terminal within protection protection set。

Described protection set also includes writing pencil 200, and writing pencil 200 is provided with the LC resonant circuit for resonating with sensor matrices, as shown in Figures 2 and 3。

Described LC resonant circuit mainly includes basic circuit and resonant frequency calibration circuit。Basic circuit is made up of electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C11 and L1, one end of inductance L1 connects one end of one end of electric capacity C1, one end of electric capacity C2, one end of electric capacity C3 and electric capacity C4 respectively, and the other end of inductance L1 connects the other end of the other end of electric capacity C1, the other end of electric capacity C2, the other end of electric capacity C3, the other end of electric capacity C4 and electric capacity C11 respectively；Resonant frequency calibration circuit is made up of calibration capacitance C5, calibration capacitance C6, calibration capacitance C7, calibration capacitance C8 wherein any one or more electric capacity and wire jumper point LJ1, wire jumper point LJ2, wire jumper point LJ3, wire jumper point LJ4 wherein any one or more wire jumper points；One end of electric capacity C5, one end of electric capacity C6, one end of electric capacity C7 and one end of electric capacity C8 are all connected with one end of electric capacity C4, the other end of electric capacity C5, the other end of electric capacity C6, the other end of electric capacity C7 and the other end of electric capacity C8 are connected with one end of wire jumper point LJ1, one end of wire jumper point LJ2, one end of wire jumper point LJ3 and one end of wire jumper point LJ4 respectively, and the other end of wire jumper point LJ1, the other end of wire jumper point LJ2, the other end of wire jumper point LJ3 and the other end of wire jumper point LJ4 are all connected with the other end of electric capacity C4。

Because of electric capacity C1, electric capacity C2, electric capacity C3, electric capacity C4, the basic circuit of electric capacity C11 and L1 composition, there is certain error in the actual value of its resonant frequency and theoretical value, in practical situation, need to access calibration capacitance according to error, therefore calibration capacitance C5, calibration capacitance C6, calibration capacitance C7 and calibration capacitance C8 be washability be linked in this LC resonant circuit, before calibration resonant frequency, wire jumper point LJ1, wire jumper point LJ2, wire jumper point LJ3 and wire jumper point LJ4 is open circuit, after calibration resonant frequency, because of calibration resonant frequency, selected calibration capacitance connects with corresponding wire jumper point, thus calibration capacitance C5 accesses this LC resonant circuit。

Described LC resonant circuit also includes electric capacity C9, switch S1 or variable capacitance C10, electric capacity C9 is fixedly connected in circuit, switch S1 and variable capacitance C10 alternative connect into circuit, for experiencing pressure when lettering pen is write, switch S1 closes or variable capacitance C10 changes according to its capacitance of pressure, during no pressure, the capacitance of variable capacitance is 5PF。

The resonant frequency of described LC resonant circuit is:

$f=\frac{1}{2\mathrm{\π}\sqrt{L_1{C}_{tatal}}}.$

For C_totalFor the total capacitance value of LC resonant circuit, access LC resonant circuit, C for variable capacitance C10_total=C1+C2+C3+C4+C11+C9+C10+C_x, C_xTotal capacitance value for calibration capacitance。

Described electric capacity C1 is 100pF electric capacity, described electric capacity C2 is 1000pF electric capacity, and described electric capacity C3 is 47pF electric capacity, and described electric capacity C4 is 10pF electric capacity, described electric capacity C5 is 10pF electric capacity, described electric capacity C6 is 22pF electric capacity, and described electric capacity C7 is 47pF electric capacity, and described electric capacity C8 is 82pF electric capacity, described electric capacity C9 is 100pF electric capacity, described tunable capacitor C10 is 5-20pF tunable capacitor, and described inductance L1 is 70uH inductance, and described switch S1 is DTS-19L-CT type switch。

Described inductance L1 is arranged on the circumference of nib 210 of writing pencil 200; i.e. wire-wound inductor 220 in Fig. 2; inductance L1 is arranged at the circumference of the nib 210 of writing pencil 200 and near nib; be conducive to the electromagnetic induction better produced with sensor matrices in sensing protection set; sensitive produces resonance with the inductance coil in protection set, so that protection set senses the person's handwriting that writing pencil 200 is write rapidly accurately。Described written 210 are preferably pencil stub 210。

Variable capacitance C10 is pressure-induced capacitance 230, and described pressure-induced capacitance 230 is arranged at the rear end of nib 210。

Concrete; as shown in Figures 2 and 3; pressure-induced capacitance 230 is also switching capacity; when spreading paper on protection set panel 120 and adopting writing pencil 200 to write; nib 210 extruding pressure-induced capacitance 230; make wire jumper optional wire jumper LJ1, optional wire jumper LJ2, optional wire jumper LJ3 and optional wire jumper LJ4 Guan Bi; the value of whole electric capacity changes; the frequency making writing pencil 200 circuit is consistent with the frequency of induction apparatus matrix; produce resonance; making protection set collect the information that writing pencil 200 is write accurately rapidly, truly writing thus realizing placing paper on the protective sleeve。

In sum, the protection set write of this utility model design, the protection set that this can be write includes body 100, and described body 100 is provided with for sensing the sensor matrices that writing pencil 200 is write；Described sensor matrices is connected with the intelligent terminal being placed in protection set。This utility model is by opening protection set; spread paper on the protective sleeve, use supporting lettering pen to write, utilize electromagnetic induction resonance principle; intelligent terminal can detect rapidly lettering pen written contents accurately, it is achieved places paper on the protective sleeve and truly writes。And the protection set write of this utility model design combines with intelligent terminal, stabilized structure is simple, easy to carry。

Know-why of the present utility model is described above in association with specific embodiment。These describe and are intended merely to explanation principle of the present utility model, and can not be construed to the restriction to this utility model protection domain by any way。Based on explanation herein, those skilled in the art need not pay performing creative labour can associate other detailed description of the invention of the present utility model, and these modes fall within protection domain of the present utility model。

Claims (9)

1. the protection set that a kind can be write, it is characterised in that include body (100), described body (100) is provided with for sensing the sensor matrices that writing pencil (200) is write；Described body (100) is additionally provided with connecting portion；When being placed with intelligent terminal in described protection set, described sensor matrices is connected with described intelligent terminal by described connecting portion。

2. protection set according to claim 1, it is characterised in that described sensor matrices is the some groups of inductance coils being arranged at PCB。

3. protection set according to claim 2, it is characterised in that described inductance coil is arranged anyhow。

4. protection set according to claim 1; it is characterized in that; described body (100) includes supporting the base plate (110) of described intelligent terminal, panel (120), folding portion; base plate (110) is connected by folding portion with panel (120), and described sensor matrices is arranged at panel (120)。

5. protection set according to claim 1, it is characterised in that described connecting portion is FPC。

6. protection set according to claim 4; it is characterized in that; the outside of described base plate (110) and described panel (120) is provided with Magnet; when described protection set closes, base plate (110) and panel (120) are attracted by the described Magnet of arranged outside。

7. protection set according to claim 1, it is characterised in that also including writing pencil (200), writing pencil (200) is provided with the LC resonant circuit for resonating with sensor matrices, and the resonant frequency of described LC resonant circuit is:

8. protection set according to claim 7; it is characterized in that; described LC resonant circuit includes basic circuit and resonant frequency calibration circuit, and described basic circuit includes inductance L1, and described inductance L1 is arranged on the circumference of nib (210) of writing pencil (200)。

9. protection set according to claim 8, it is characterised in that described nib (210) bottom comprises a pencil-lead that can write。