KR20160011035A

KR20160011035A - Self charging stylus pen

Info

Publication number: KR20160011035A
Application number: KR1020140091993A
Authority: KR
Inventors: 권용일; 박타준
Original assignee: 삼성전기주식회사
Priority date: 2014-07-21
Filing date: 2014-07-21
Publication date: 2016-01-29

Abstract

SUMMARY OF THE INVENTION An object of the present invention is to provide a stylus pen which can produce electricity by itself and is easy to carry.
The present invention relates to a piezoelectric resonator comprising a flexible housing, a piezo generator which is disposed in the housing and which generates bending electricity to correspond to the bending of the housing, a battery portion disposed in the housing and charged by electricity generated from the piezo generator, And a driving unit that receives and supplies electricity to drive the stylus pen.

Description

Self-charging stylus pen {SELF CHARGING STYLUS PEN}

The present invention relates to a self-charging stylus pen.

Recently, portable terminals such as mobile phones and tablet PCs are widely used. 2. Description of the Related Art [0002] A touch screen method is widely used because a portable terminal is miniaturized due to convenience of movement or the like, and touches the touch using a finger or a stylus pen without using a separate keypad and uses an input signal touch panel. In particular, fingers may not have an elaborate touch, but stylus pen is not. The stylus pen can be divided into a passive type and an active type. The passive type stylus pen can not perform various functions such as changing the line thickness according to the pressure and pop-up, The demand for stylus pens is increasing.

However, since the active stylus pen itself has driving means and the like, a battery for supplying electric power is essential. However, if the battery is used for a long time, it may be inconvenient to use or replace the battery. In addition, a separate charging device or the like must be used for charging, and it is not easy to carry because it must have such a charging device.

KR 2003-0080386 (published on October 17, 2003) KR 2014-0022305 (published Feb. 24, 2014)

An object of the present invention is to provide a self-charging stylus pen which can produce electricity by itself and is easy to carry.

A first embodiment of the present invention relates to a piezoelectric resonator comprising a flexible housing, a piezo generator disposed in the housing and adapted to generate pressure by receiving a pressure corresponding to the bending of the housing, a battery disposed in the housing, And a drive unit which is disposed in the housing and supplies electricity from the battery and drives the stylus pen.

According to the self-charging stylus pen according to the present invention, electricity can be produced by itself, and even when power is not supplied from the outside, the use time of the stylus pen can be increased. In addition, since a separate charging device is not required, it is convenient and portable.

1 is a structural view showing a first embodiment of a self-charging stylus pen according to the present invention.
2 is a structural diagram showing a second embodiment of a self-charging stylus pen according to the present invention.
Fig. 3 is a side view showing one embodiment of the piezo generator shown in Figs. 1 and 2. Fig.
Fig. 4 is a circuit diagram showing one embodiment of the charging circuit portion shown in Figs. 1 and 2. Fig.

The above and other objects, features, aspects and advantages of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG.

In the following description, well-known functions or constructions are not described in detail since they would obscure the invention in unnecessary detail. In this specification, the terms first, second, etc. are used to distinguish one element from another element, and the element is not limited by these terms.

The following detailed description of the invention refers to the accompanying drawings, which illustrate, by way of illustration, specific embodiments in which the invention may be practiced. These embodiments are described in sufficient detail to enable those skilled in the art to practice the invention. It should be understood that the various embodiments of the present invention are different, but need not be mutually exclusive. For example, certain features, structures, and characteristics described herein may be implemented in other embodiments without departing from the spirit and scope of the invention in connection with an embodiment. It is also to be understood that the position or arrangement of the individual components within each disclosed embodiment may be varied without departing from the spirit and scope of the invention. The following detailed description is, therefore, not to be taken in a limiting sense, and the scope of the present invention is to be limited only by the appended claims, along with the full scope of equivalents to which such claims are entitled, if properly explained. In the drawings, like reference numerals refer to the same or similar functions throughout the several views.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings, so that those skilled in the art can easily carry out the present invention.

1 is a structural view showing a first embodiment of a self-charging stylus pen according to the present invention. Here, it is shown that the stylus pen 100 is not warped.

1, the stylus pen 100 includes a flexible housing 110, a piezo generator 120 disposed in the housing 110 and generating pressure by receiving pressure corresponding to the bending of the housing 110, A battery unit 130 disposed in the housing 110 to charge electricity generated in the piezo generator 120 and a driving unit 140 disposed in the housing 110 and powered by electricity from the battery unit 130, .

The housing 110 may be made of rubber, silicon, epoxy resin or the like and a flexible material, and the housing 110 may be bent when shaken. The housing 110 includes a flexible first portion A and a non-flexible second portion B and the piezo generator 120 can be disposed within the first portion A. [ The housing 110 may have a first portion A and a second portion B each of a flexible material and a non-flexible material. The housing 110 may be made of a flexible material, A material having rigidity around the outer periphery or the inner periphery of the portion B is surrounded to reinforce the rigidity of the second portion B so as not to be bent. When the second portion B of the housing 110 is not bent, the battery portion 130 and the driving portion 140 disposed inside the second portion B may not be bent and may not be damaged.

The piezo generator 120 is disposed inside the housing 110 and can receive pressure according to the bending of the housing 110. The pressure transmitted to the piezo generator 120 may cause the piezo generator 120 to bend in response to bending of the housing 110. The piezo generator 120 generates electricity when a pressure is applied in a specific direction. That is, when the housing 110 is bent in one direction, a voltage may be generated in proportion to the degree of bending and bending of the piezoelectric generator 120 in one direction. The piezoelectric generator 120 may further include a connection portion 143 and the connection portion 143 may supply current to the battery portion 110 through the wiring 144. [

The driving unit 140 receives power from the battery unit 130 and operates the stylus pen 100 to output an electrical signal. The driving unit 140 includes a pressure sensor 141 disposed at one end of the housing 110 to generate a pressure sensing signal applied to one end of the housing 110 and a pressure sensor 141 receiving the pressure sensing signal from the pressure sensor 141 And a transceiver 142 for transmitting data to an external device (not shown) such as a tablet PC, a mobile phone, or the like.

The pressure sensor unit 141 may sense the pressure and change the sensed pressure to an electrical pressure sensing signal. The pressure sensor unit 141 is disposed at an end of the housing 110 so as to sense a pressure applied to the stylus pen 100 in close contact with an external device. It may also be located outside the end of the housing 110. However, the position of the pressure sensor unit 141 is not limited to this, and may be a position where pressure is easily sensed. The pressure sensor unit 141 can sense the pressure by sensing the physical force applied to the pressure sensor unit 141 and can sense the pressure by using the mutual capacitance change between the external device and the pressure sensor unit 141 have. The manner in which the pressure sensor 141 senses the pressure is illustrative, and the pressure sensor 141 can sense the pressure in various ways. In addition, the pressure sensor unit 141 may sense the distance between the stylus pen 100 and an external device as well as the pressure.

The transceiver 142 can transmit the pressure sensing signal detected by the stylus pen 100 to an external device. The transceiver 142 may include a wireless communication module such as a Bluetooth module, a WIFI module, a ZIGBEE module, or the like. However, this is an example, and it is possible to use a wireless communication module used for wireless communication. In addition, the transceiver 142 may transmit a pressure sensing signal output from the pressure sensor unit 141 to an external device using a wired communication module in addition to the wireless communication module.

The battery unit 130 can be used without charging power generated from the piezo generator 120 so that the stylus pen 100 does not receive power from the outside and it is not necessary to charge the battery unit 130 using a separate charger . Also, even if the battery unit 130 is charged using a separate charger, the battery unit 130 can be continuously charged through the piezo generator 120, thereby increasing the use time. The battery unit 130 may include a battery and a charging circuit unit that charges the battery with electricity generated in the piezo generator 120. [ The charging circuit will be described in more detail in Fig.

2 is a structural diagram showing a second embodiment of a self-charging stylus pen according to the present invention. Here, it is shown that the stylus pen 200 is warped.

Referring to FIG. 2, the stylus pen 200 includes a flexible housing 210, a piezo generator 220 disposed in the housing 210 and bent to generate electricity by bending the housing 210, a housing 210 And a driving unit 240 that is disposed in the housing 210 and that receives and drives electricity from the battery unit 230. The driving unit 240 may include a battery 230 that is disposed in the housing 210 and that charges electricity generated in the piezo generator 220, have. The stylus pen 200 may also include a hinge 250 disposed within the housing 210 and disposed in at least one of the upper and lower portions of the piezo generator 220. Here, only points different from the stylus pen 100 of Fig. 1 will be described. The hinge 250 disposed on at least one of the upper portion and the lower portion of the piezoelectric generator 220 may be bent when the housing 210 is bent due to a force applied thereto so that the degree of bending of the housing 210 may be limited. When the housing 210 is bent to a great extent, the piezo generator 220 may also be bent and damaged. However, when the hinge 250 is folded and a force is applied to the housing 210, The degree of bending of the housing 210 can be limited. If the degree of bending of the housing 210 is limited, the degree of bending of the piezoelectric generator 220 may be restricted, thereby preventing the piezoelectric generator 220 in the housing 210 from being bent and damaged. The hinge 250 may include two hinge plates 251 and 252 and a hinge shaft 253 connecting the two hinge plates 251 and 252 and causing the two hinge plates 251 and 252 to collapse at a predetermined angle. However, the present invention is not limited to this, and it is also possible to fold it at a predetermined angle by the two hinge plates 251 and 252. The hinge plate 251 of one of the two hinge plates 251 and 252 is fixed to the housing 210 and the other hinge plate 252 is connected to the hinge shaft 253 and can be folded at an angle. The two hinge plates 251 and 252 are connected to the spring 254 about the hinge shaft 253 and the spring 254 is extended when the two hinge plates 251 and 522 are folded at a predetermined angle, 251.252 can be restored to the original state without being stretched due to the elastic force of the spring 254. When the two hinge plates 251, 522 are folded, the two hinge plates 251, 522 can be extended again by the restoring force of the spring 254 which is stretched. The hinge 250 may be disposed at the top and bottom of the piezo generator 220, respectively. In addition, the hinge 250 may further include a protrusion 255 at the end of the hinge plate 252. The protrusion 255 is brought into contact with the piezo generator 220 and the hinge 250 is folded and expanded so as to apply pressure to the piezo generator 220 so that the piezo generator 220 can be smoothly bent and unfolded So that the electric generation can be more smoothly performed in the piezo generator 220. The hinge plate 252 of one of the two hinge plates 251.252 is located in the flexible first portion A of the housing 210 and the other hinge plate 251 is located in a position where the flexibility of the housing 210 (B) without the second portion (B). The sizes of the two hinge plates 251 and 252 may be the same or different. In addition, the hinges 250 formed on the upper and lower portions of the piezo generator 220 may be the same or different in size.

Fig. 3 is a side view showing one embodiment of the piezo generator shown in Figs. 1 and 2. Fig.

Referring to FIG. 3, the piezo generators 120 and 220 may include a substrate 300 having a predetermined area and an actuator 310 disposed on the substrate 300. The actuator 310 may be disposed on the substrate 300 in the form of a thin film. The piezo generators 120 and 220 may have a connection part 320 and a wire 330 may be connected to the connection part 320 to transmit electricity generated by the piezo generator 120 to the outside. When the pressure generated by the bending of the housing is applied to the piezoelectric generator 120, the substrate 300 is bent so that the actuator 310 disposed on the substrate 300 can be bent like the substrate 300. Electricity may be generated in the crystals in the actuator 310 by bending the actuator 310. The generated electricity can be transmitted through the wiring 330 connected to the connection part 320. The magnitude of the voltage generated depending on the degree of bending of the actuator 310 may be different.

4 is a circuit diagram showing one embodiment of the battery unit shown in Figs. 1 and 2. Fig.

Referring to FIG. 4, the battery units 130 and 230 may include a charging circuit unit 400 and a battery 410 that is charged by the charging circuit unit 400. The charging circuit unit 410 may include a rectifying unit 420 for rectifying the AC power generated by the piezo generators 120 and 220 and a regulator 430 for regulating a current rectified by the rectifying unit 420 to have a predetermined voltage have. The rectifying unit 420 can rectify the current generated by the piezo generators 120 and 220 by arranging the four diodes D1, D2, D3 and D4 in the form of a bridge. The regulator 430 can change the voltage so that the voltage Vrect of the power source rectified by the rectifying unit 420 has a predetermined voltage. The regulator 430 receives the rectified current from the rectifying unit 420, outputs a predetermined voltage, and receives the voltage of the output terminal. The voltage VFB to be fed back may be the voltage at the output terminal divided by resistors R1 and R2. Regulator 430 may include a DC / DC converter to change the voltage. A power source having a predetermined voltage output from the regulator 430 is transmitted to the battery 410 so that the battery 410 can be charged.

In the claims hereof, the elements depicted as means for performing a particular function encompass any way of performing a particular function, such elements being intended to encompass a combination of circuit elements that perform a particular function, Microcode, etc., coupled with suitable circuitry to perform the software for the computer system 100. The computer system 100 may include any type of software, including firmware, microcode, etc.,

Reference throughout this specification to " one embodiment ", etc. of the principles of the invention, and the like, as well as various modifications of such expression, are intended to be within the spirit and scope of the appended claims, it means. Thus, the appearances of the phrase " in one embodiment " and any other variation disclosed throughout this specification are not necessarily all referring to the same embodiment.

The use of the term " connected " or " connecting " herein, and the various variations of such expressions, are used herein to mean either directly connecting to another element or indirectly connecting through another element. Also, the singular forms in this specification include plural forms unless the context clearly dictates otherwise. Also, components, steps, operations, and elements referred to in the specification as " comprises " or " comprising " refer to the presence or addition of one or more other components, steps, operations, elements, and / or devices.

100: Stylus Pen 110: Housing
120: Piezoelectric generator 130: Battery part
140: driving part 141: pressure sensor part
142: charging circuit section 143: connection section

Claims

A flexible housing;
A piezo generator disposed in the housing and receiving pressure in response to bending of the housing to generate electricity;
A battery unit disposed in the housing and charging electricity generated in the piezo generator; And
And a driving unit that is disposed in the housing and receives electricity from the battery and drives the stylus pen.

The method according to claim 1,
The housing comprising a first flexible portion and a second flexible portion, the piezo generator being disposed within the first portion.

The method according to claim 1,
Wherein the driving unit includes a pressure sensor unit disposed at one end of the housing and generating pressure information applied to one end of the housing, and a transceiver receiving the pressure information from the pressure sensor unit and transmitting the pressure information to an external device.

The method according to claim 1,
Wherein the battery unit includes a battery and a charging circuit unit that charges the battery with AC power generated by the piezo generator,
Wherein the charging circuit portion includes a rectifying portion for rectifying the AC power generated by the piezo generator and a regulator for allowing the power rectified by the rectifying portion to have a predetermined voltage.

The method according to claim 1,
Wherein the piezo generator includes a substrate having a predetermined area and an actuator disposed on the substrate.

The method according to claim 1,
A hinge for folding the hinge at a predetermined angle in the housing; and a spring for causing the hinge to expand again by an elastic force after the hinge is folded.

The method according to claim 6,
And a protrusion that is in contact with the piezo generator is disposed at an end of the hinge.