TW201928609A - Stylus having pen head assembly and pen cap synchronized in motion - Google Patents

Abstract

A stylus has a pen head assembly and a pen cap synchronized in motion. The stylus includes a barrel, a pen head assembly, a drive circuit unit, a pen cap, and an elastic element. The pen head assembly is electrically connected to the drive circuit unit. The pen cap is connected to the pen head assembly, and an end portion of the pen head assembly is exposed from the pen cap. An exposed distance is formed between a top edge of the end portion and a rim of the pen cap. When the pen head assembly is pressed, the end portion of the pen head assembly is synchronized in motion from an initial position with the pen cap, the pen head assembly moves inwardly toward the barrel and compresses the elastic element. When the elastic element is restored to release the pen head assembly, the pen head assembly and the pen cap are together returned to their initial positions to thereby avoid a deduction or a loss in signal strength, and as a result, the signal strength is maintained.

Description

Stylus with synchronized movement of the pen assembly and the cap

The invention relates to a stylus, in particular to a stylus with a movement of a pen assembly and a cap.

Among the consumer electronic products on the market, electronic products with touch panels are becoming more and more popular, especially a capacitive touch panel. The capacitive touch panel utilizes the conductive and static characteristics of the human body to achieve the purpose of touch. . When the user touches the touch area of the touch panel with a finger, the capacitance value of the contact position changes, and the touch panel can determine the position selected by the user according to the position of changing the capacitance value to achieve the touch. purpose.

The existing active capacitive stylus touch panel is widely used because of its advantages of convenient writing, pen tip pressure sensing, and high sensitivity. As shown in FIG. 8, the conventional active capacitive pen includes at least a cap A, a pen head B that is telescopically opposed to the cap A, a pen C assembled to the cap B, and a control unit D installed in the pen C, wherein the control unit D is provided with at least one pressure sensing unit E. When the active capacitive pen touches the touch panel (not shown), the pen B will telescopically move the contact pressure sensing unit E, and the control unit D detects the value of the pressure sensing unit E on the touch panel to obtain the initiative. The force of the pen tip of the capacitive pen.

In general, the pen B (ie, the receiving end; Rx) is to avoid a circuit feedback between the conductive cap A (ie, the transmitting end; Tx), and usually a shielding component is placed on the pen B so that the Tx does not Interference with Rx. However, when the active capacitive pen is used, the pen B that is contracted and moved toward the control unit D will be close to the cap A, resulting in a closer distance between the protective cover and the cap A, and a circuit back between the pen B and the cap A. Signal feed-back, which causes the signal strength of the outgoing and received signals to be weakened (Loss/Loss), and even in the case of seriousness, it may not be sensed. In addition, the existing active capacitive pen has many components, and the assembly has accumulated tolerances, which causes assembly time-consuming, labor-intensive, and difficult assembly.

In view of this, how to overcome the above-mentioned shortcomings through the improvement of institutional design has become one of the important issues that the cause is to solve.

One of the objects of the present invention is to provide a stylus with synchronized movement of a pen tip assembly and a cap that avoids signal feed-back and causes signal loss/attenuation.

Another object of the present invention is to provide a stylus pen having a pen tip assembly and a pen cap synchronized movement in an insert molding manner.

To achieve the above object, the present invention provides a stylus having a pen-head assembly and a cap-synchronous movement for use with an electronic device. The stylus includes a pen, a driving circuit unit, a head assembly, a cap and an elastic member. The pen holder is hollow, and the driving circuit unit is disposed in the pen holder for emitting a touch signal. The pen tip assembly is assembled in the pen holder and electrically connected to the driving circuit unit and used to receive signals from the electronic device. The cap is coupled to the tip assembly and exposes one end of the tip assembly with an exposed distance between the top edge of the end and the end edge of the cap. The cap is electrically connected to the driving circuit unit to emit a touch signal to the electronic device. The elastic member is disposed in the pen holder and connected to the pen assembly. When the pen tip assembly is pressed, the end of the pen tip assembly moves synchronously with the cap from an initial position, and the elastic component is contracted and compressed in the direction of the pen bar without changing the exposure distance, and the pen tip assembly is released when the elastic component restores the elastic release pen assembly. Return to the initial position together with the cap.

The pen head assembly of the present invention comprises a wire sleeve assembled in the pen holder, a tip bar inserted at one end of the wire sleeve, a wire connecting the pen tip bar and the wire sleeve, and a protection covering the tip end of the pen tip bar A sleeve in which the nib stick passes through the cap and the end is the tip of the nib. In addition, the cap is provided with an internal thread portion, and one end of the wire sleeve is provided with an external thread portion, so that the internal thread portion of the cap is screwed to the external thread portion of the wire sleeve to be tightly coupled to the pen assembly, thereby making the cap It can be linked with the pen assembly to avoid the problem of signal feedback from the pen assembly (ie Rx) and the cap (ie Tx).

The wire sleeve of the present invention comprises an insulated core tube portion through which the wire is threaded, a first conductor tube portion that sleeves the insulated core tube portion, and an insulated outer tube portion that partially sleeves the first conductor tube portion, and the sleeve a second conductor tube portion of the insulating outer tube portion and an insulating convex ring sleeved to the second conductor tube portion. The above-mentioned insulating core tube portion, the first conductor tube portion, the insulating outer tube portion, the second conductor tube portion and the insulating convex ring are preferably integrally formed by burying, so that the stylus does not have an assembly tolerance Accumulation, and effectively save the assembly time and cost of each component, and achieve the advantages of convenient assembly and quickness.

During the reciprocating movement of the pen assembly of the stylus relative to the pen holder, since the pen assembly and the cap can be simultaneously linked/actuated, that is, the exposure distance between the pen assembly and the cap is kept constant when retracted and/or elastically extended. / unchanged, in order to effectively avoid the loss or weakening of the signal strength.

The detailed description and technical content of the present invention are set forth in the accompanying drawings.

Referring to FIG. 1 to FIG. 5, the present invention provides a stylus with a pen-head assembly and a cap-synchronized movement, which is used in conjunction with an electronic device (not shown). The electronic device described herein is preferably a smart phone, a tablet computer, a notebook computer or other electronic device with a touch screen.

The stylus 10 includes a pen 1 , a driving circuit unit 14 , a head assembly 2 , a cap 3 and an elastic member 25 . The stylus 10 is preferably an active capacitive stylus in which a power supply unit 15 electrically connected to the driving circuit unit 14 is mounted. The driving circuit unit 14 includes, for example, a circuit board and a control unit electrically coupled to the circuit board, a pressure sensing unit, a signal transmitting unit and the like for transmitting a touch signal (not labeled) to achieve touch sensing. purpose. The power supply unit 15 can be a rechargeable battery, a battery or other suitable battery. The power supply unit 15 or other components are prior art and will not be described here.

In addition, as shown in FIG. 6 and FIG. 7 together, the pen holder 1 further includes a stop portion (not shown) of the stop tip assembly 2, a guide plug portion 12 adjacent to the stop portion, and a stop formed thereon. A receiving space between the portion and the guiding plug portion 12 (not shown). The stop portion and the guide plug portion 12 described herein are both made of a non-conductive material, such as plastic or the like. The pen holder 1 is hollow. The pen tip assembly 2 is assembled in the pen holder 1 and electrically connected to the driving circuit unit 14, and the pen tip assembly 2 is configured to receive signals emitted by the electronic device. Specifically, the pen tip assembly 2 includes a wire sleeve 21 assembled in the pen holder 1 , a needle bar 22 inserted at one end of the wire sleeve 21 , a pen tip bar 22 and a wire 23 passing through the wire sleeve 21 and A protective cover 24 is provided at the tip end of the nib stick 22, wherein the writing head assembly 2 is movably limited to the inside of the pen holder 1.

The wire sleeve 21 further has a first convex ring portion 2121 accommodated in the accommodating space, and the first convex ring portion 2121 is movable to move between the stopper portion and the guide plug portion 12. The pen tip assembly 2 includes an elastic member 25 that is sleeved on the wire sleeve 21 so that the wire sleeve 21 of the pen tip assembly 2 can be returned to the initial position F by the rebound of the elastic member 25 when the stylus pen 10 is in use. Both ends of the elastic member 25 abut against the second convex ring portion 2141 of the wire sleeve 21 and the guide plug portion 12, respectively. The elastic member 25, which is, for example, a compression spring, has an extension 251 at one end, and the extension portion 251 projects into a drive circuit unit 14 in the contact pen 1 to form a ground.

A cap 3 made of a conductive material is bonded to the pen tip assembly 2 and exposes one end portion 27 of the pen tip assembly 2, wherein an edge of the end portion 27 and an end edge of the cap 3 have an exposure distance H. The cap 3 is electrically connected to the driving circuit unit 14 to emit a touch signal to the electronic device. Specifically, the cap 3 is assembled to the wire sleeve 21 of the pen tip assembly 2 and exposes the protective cover 24 that covers the tip end of the pen tip bar 22. The material of the protective cover 24 referred to herein is, for example, polyethylene terephthalate (PET) or other suitable thermoplastic plastic, and is not limited. The exposure distance H is preferably a distance from the tip end of the nib bar 22 of the protective cover 24 to the partial lead sleeve 21. In the embodiment shown in FIG. 6 to FIG. 7, the cap 3 is provided with an internal thread portion 31, and one end of the wire sleeve 21 is provided with an external thread portion 2142, so that the internal thread portion 31 of the cap 3 is screwed to the wire sleeve 21 The externally threaded portion 2142 is securely coupled to the tip assembly 2.

Preferably, the material of the nib bar 22 made of a conductive material is, for example, steel, aluminum, iron, copper or an alloy thereof, or even a conductive plastic formed by adding the above metal or alloy to induce a capacitive coupling signal with the touch panel. . The tip end of the nib bar 22 shown in FIG. 3 to FIG. 6 is preferably a disc-shaped portion 221, and the other end of the disc-shaped portion 221 is a hollow bobbin 222 that is sleeved with a wire 23, and is covered by a protective cover 24. The disk portion 221 prevents the disk portion 221 of the pen tip bar 22 from directly contacting or striking the touch panel to protect the touch panel and the disk portion 221 from damage.

The embodiment further includes an insulating sheath 4 for screwing the sheath 1 and the guiding plug 12 respectively, so that the insulating sheath 4 and the cap 3 have a spacing L therebetween. That is, one end of the insulating sleeve 4 has an external thread portion 41 and an internal thread portion 42 respectively, wherein the external thread portion 41 and the internal thread portion 16 of the sheath 1 are screwed, and the internal thread portion 42 of the insulating sheath 4 is The external thread portion (not shown) of the guiding plunger 12 is screwed. The wire sleeve 21 of the pen tip assembly 2 can be respectively passed through the insulating cover 4 and the guide plug portion 12 to move the pen tip assembly 2 and the cap 3 in the distance L. That is to say, the insulating casing 4 here also has the effect of restricting the displacement of the wire bushing 21 of the pen tip assembly 2 as described above.

The wire sleeve 21 includes an insulating core tube portion 211 through which the wire 23 is bored, a first conductor tube portion 212 that sleeves the insulating core tube portion 211, and an insulated outer tube portion that partially sleeves the first conductor tube portion 212. 213 and a second conductor tube portion 214 sleeved on the insulating outer tube portion 213. The first conductor tube portion 212 has a first convex ring portion 2121, and the second conductor tube portion 214 has a second convex ring portion 2141. The first convex ring portion 2121 and the second convex ring portion 2141 are spaced apart from each other. One end of the elastic member 25 is in contact with the second convex ring portion 2141.

The second conductor tube portion 214 further has an external thread portion 2142 adjacent to the outer ring surface of the cap 3, and the internal thread portion 31 of the cap 3 is screwed to the external thread portion 2142 of the wire sleeve 21. In the embodiment shown in FIG. 6 and FIG. 7, an insulating collar 215 is also sleeved on the second conductor tube portion 214. The insulating core tube portion 211, the first conductor tube portion 212, the insulating outer tube portion 213, the second conductor tube portion 214, and the insulating collar 215 of the present embodiment are preferably integrally molded by being buried. In addition, the material of the first conductor tube portion 212 and the second conductor tube portion 214 is made of copper, steel, iron, aluminum or an alloy thereof; the material of the insulating core tube portion 211, the insulating outer tube portion 213 and the insulating convex ring 215 is Made of plastic or other suitable non-conductive material.

The structural design of the conductive sleeve 21 is integrally formed, and the pressure sensitive signal can be transmitted to the driving circuit unit 14 through the wire 23 through the pen tip bar 22, and the grounding signal can be effectively transmitted through the second conductive tube portion 214 through the elastic member 25. Drive circuit unit 14. The wire ferrule 21 having metal or plastic is integrally formed in an embedded manner, so that the stylus pen 10 of the embodiment does not have an accumulation of assembly tolerances, thereby effectively saving assembly time and cost of each component, and facilitating assembly. Fast advantages.

It should be noted that the pen tip assembly 2 further includes an insulating sheet 26 disposed between the wire sleeve 21 and the disk portion 221, and the insulating sheet 26 is provided with an opening 261 for the pen tip bar 22 to be inserted. The disk portion 221 is effectively insulated from the first conductor tube portion 212 of the wire sleeve 21 to avoid a short circuit.

The operation description of the stylus pen 10 will be further described below. As shown in FIG. 6 and FIG. 7 , since the pen tip assembly 2 and the cap 3 are screwed to each other by threads or the like, when the user presses the pen tip assembly 2 of the stylus pen 10, the end portion 27 of the pen tip assembly 2 will be self-contained. An initial position F moves in synchronization with the cap 3, and the elastic member 25 is contracted and compressed in the direction of the sheath 1 without changing the exposure distance H. When the elastic component 25 restores the elastic release of the tip assembly 2, the pen tip assembly 2 and the cap 3 are returned to the initial position F.

In other words, when the pen tip assembly 2 is interlocked with the cap 3 in the direction of the drive circuit unit 14, it is moved until it abuts against the stopper and/or the insulating sheath 4. The driving circuit unit 14 receives the signal from the electronic device according to the pen tip assembly 2 (ie, Rx) and transmits the touch signal through the pen cap 3 (ie, Tx) to the electronic device for capacitive sensing. In addition, the driving circuit unit 14 can also obtain the pressing path of the pen head assembly 21 of the stylus pen 10 by using the value of the pressure sensing signal detected by the pen tip assembly 2. When the user does not use the stylus pen 10, the elastic member 25 is resiliently returned to return the pen tip assembly 2 and the cap 3 to the initial position F. During the reciprocating movement of the pen tip assembly 2 of the stylus pen 10 relative to the pen holder 1 (ie, the insulating casing 4), since the pen tip assembly 2 and the cap 3 can be simultaneously interlocked/actuated, that is, when retracted and/or elastically extended. The exposure distance H between the pen tip assembly 2 and the cap 3 is kept constant (unchanged), so that the loss or weakening of the signal strength can be effectively avoided.

In the above, the embodiments disclosed herein are to be considered as illustrative of the invention and not to limit the invention. The scope of the present invention is defined by the scope of the appended claims, and the legal equivalents thereof are not limited to the foregoing description.

10‧‧‧ stylus

1‧‧‧ pen

12‧‧‧Guidage

14‧‧‧Drive circuit unit

15‧‧‧Power supply unit

16‧‧‧Threaded Department

2‧‧‧ pen head assembly

21‧‧‧ wire casing

211‧‧‧Insulated core tube

212‧‧‧First Conductor Tube

2121‧‧‧First convex ring

213‧‧‧Insulated outer tube

214‧‧‧Second conductor tube

2141‧‧‧Second convex ring

2142‧‧‧External thread

215‧‧‧Insulated collar

22‧‧‧ pen tip

221‧‧‧Disc

222‧‧‧ hollow bobbin

23‧‧‧Wire

24‧‧‧ protective cover

25‧‧‧Flexible components

251‧‧‧Extension

26‧‧‧Insulation sheet

261‧‧‧Perforation

27‧‧‧End

3‧‧‧ pen cap

31‧‧‧Threaded Department

32‧‧‧External thread

4‧‧‧Insulated casing

41‧‧‧External thread

42‧‧‧Threaded Department

F‧‧‧ initial position

H‧‧‧ exposed distance

L‧‧‧ spacing

1 is a schematic perspective view of a stylus having a pen-head assembly and a cap-synchronized movement according to the present invention.

2 is a partially exploded view of the stylus with the pen head assembly and the cap moving in synchronization with the present invention.

3 is an exploded view of the stylus assembly of the stylus with the stylus of the present invention having a pen tip assembly and a cap.

4 is a combination diagram of a tip assembly of a stylus having a pen tip assembly and a cap moving in accordance with the present invention.

FIG. 5 is a cross-sectional view of the stylus with the pen assembly and the cap in synchronization with the present invention.

Figure 6 is an enlarged cross-sectional view of Figure 5, that is, a cross-sectional view of the pen assembly and the cap not yet linked.

FIG. 7 is another enlarged cross-sectional view of FIG. 5, that is, a cross-sectional view of the pen assembly and the cap together.

Figure 8 is a partial cross-sectional view showing the structure of a conventional active capacitive pen.

Claims (13)

A stylus having a pen-head assembly and a cap-synchronous movement is used in conjunction with an electronic device, the stylus comprising: a pen-shaped rod in a hollow shape; a driving circuit unit disposed in the pen holder for emitting a touch a head assembly assembled in the pen holder and electrically connected to the driving circuit unit, the pen head assembly for receiving a signal from the electronic device; and a cap coupled to the pen head assembly and exposing one end of the pen head assembly The cap is electrically connected to the driving circuit unit to emit the touch signal to the electronic device; And connecting the pen head assembly; wherein, when the pen tip assembly is pressed, the end portion of the pen tip assembly moves synchronously with the cap from an initial position, and the cap is retracted and compressed in the direction of the pen without changing the exposure distance The elastic component returns the initial position together with the cap when the elastic component restores the elastic release of the pen assembly. The stylus according to claim 1 , wherein the pen tip assembly comprises a wire sleeve assembled in the pen holder, and a tip bar inserted at one end of the wire sleeve, a nib stick and a wire passing through the wire sleeve and a protective cover covering the tip end of the nib, wherein the nib stick passes through the cap and the end is the tip end of the nib. The stylus according to claim 2, wherein the pen cap is provided with an internal thread portion, and one end of the wire sleeve is provided with an external thread portion, and the internal thread portion of the cap is screwed to The externally threaded portion of the wire sleeve is coupled to the tip assembly. The stylus according to claim 2, wherein the exposure pen has a distance from a tip end of the nib of the protective sleeve to a portion of the wire sleeve. The stylus according to claim 2, wherein the wire sleeve includes an insulated core tube portion through which the wire is threaded, and a first conductor tube that sleeves the insulated core tube portion. And an insulating outer tube portion of the first conductor tube portion and a second conductor tube portion sleeved on the insulating outer tube portion. The stylus according to claim 1 , wherein the tip end of the pen tip is a disk-shaped portion, and the other end of the disk-shaped portion is a hollow tube that is sleeved with the wire. tube. The stylus of claim 5, wherein the first conductor tube portion has a first convex ring portion, and the second conductive tube portion has a second convex ring portion. A convex ring portion and the second convex ring portion are spaced apart from each other. The stylus according to claim 5, wherein the second conductor tube portion has an external thread portion, the cap has an internal thread portion, and the cap is screwed to the wire sleeve. on. The stylus having the pen-head assembly and the cap-synchronous movement described in claim 5, further comprising an insulating collar that is sleeved on the second conductor tube portion, wherein the insulating core tube portion, the first conductor tube portion, The insulating outer tube portion, the second conductor tube portion, and the insulating collar are integrally formed in a buried manner. The stylus having the stylus and the cap in synchronization with the stylus according to claim 1, wherein the stylus further includes a stop portion, a guiding plug portion adjacent to the stopping portion, and a stop portion formed thereon An accommodating space between the plugs is provided, and the pen head assembly includes a wire sleeve assembled in the pen holder. The stylus of claim 10, wherein the wire sleeve has a first convex ring portion received in the accommodating space, wherein the first convex ring portion is movable Movement between the stop portion and the guide plug portion. The stylus having the pen-head assembly and the cap-synchronous movement described in claim 10, further comprising an insulating sheath respectively screwing the pen holder and the guiding plug portion, wherein the insulating sheath and the guiding plug portion respectively supply the wire The casing is pierced. The stylus according to claim 1 , wherein the elastic component has an extended end at one end, and the extension extends into contact with the driving circuit unit in the pen.