KR20150106012A - Mobile Case Equipped With Generator - Google Patents

Mobile Case Equipped With Generator Download PDF

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Publication number
KR20150106012A
KR20150106012A KR1020140027503A KR20140027503A KR20150106012A KR 20150106012 A KR20150106012 A KR 20150106012A KR 1020140027503 A KR1020140027503 A KR 1020140027503A KR 20140027503 A KR20140027503 A KR 20140027503A KR 20150106012 A KR20150106012 A KR 20150106012A
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KR
South Korea
Prior art keywords
conductive plate
vibration
piezoelectric element
assisting device
power generation
Prior art date
Application number
KR1020140027503A
Other languages
Korean (ko)
Inventor
김상우
이효수
이해중
최명식
구슬이
정하국
Original Assignee
한국생산기술연구원
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 한국생산기술연구원 filed Critical 한국생산기술연구원
Priority to KR1020140027503A priority Critical patent/KR20150106012A/en
Priority to PCT/KR2015/002308 priority patent/WO2015137707A1/en
Publication of KR20150106012A publication Critical patent/KR20150106012A/en

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    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45CPURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C11/00Receptacles for purposes not provided for in groups A45C1/00-A45C9/00
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02NELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/18Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02NELECTRIC MACHINES NOT OTHERWISE PROVIDED FOR
    • H02N2/00Electric machines in general using piezoelectric effect, electrostriction or magnetostriction
    • H02N2/18Electric machines in general using piezoelectric effect, electrostriction or magnetostriction producing electrical output from mechanical input, e.g. generators
    • H02N2/186Vibration harvesters
    • AHUMAN NECESSITIES
    • A45HAND OR TRAVELLING ARTICLES
    • A45CPURSES; LUGGAGE; HAND CARRIED BAGS
    • A45C11/00Receptacles for purposes not provided for in groups A45C1/00-A45C9/00
    • A45C2011/002Receptacles for purposes not provided for in groups A45C1/00-A45C9/00 for portable handheld communication devices, e.g. mobile phone, pager, beeper, PDA, smart phone

Abstract

A mobile case having a generator according to the present invention includes: a cover part which surrounds the mobile device; a housing which is extended to the cover part and has an internal space; the generator which is formed in the housing and generates power by external force applied from the outside; a first vibration auxiliary device which is formed on a side of the generator and increases power generation efficiency by increasing vibration due to the external force; and a second vibration auxiliary device which is separated from the generator and guides the motion of the first vibration auxiliary device.

Description

Mobile Case Equipped With Generator < RTI ID = 0.0 >

The present invention relates to a mobile case having a power generating device, and more particularly, to a mobile case having a power generating device. More particularly, the present invention relates to a mobile case in which a power generating device is internally provided to generate electric power by using an external force, And a mobile device equipped with a power generation device for protecting mobile electronic devices such as mobile phones and tablet PCs.

Nowadays, many people are using mobile phones, and in the case of smart phones, mobile phones can perform not only calls but also surfing the Web, listening to music or playing games.

Such frequent use of mobile phones through web surfing, music appreciation, or games consumes the battery capacity of the mobile phone in a short period of time. If the mobile phone battery capacity is exhausted, the mobile phone can not be used until the battery is recharged.

Therefore, the user of the mobile phone carries a spare battery, and the battery is used after the battery capacity of the mobile phone is exhausted. However, there is a problem that the user feels troublesome to carry the battery at all times.

Further, instead of the battery, the mobile phone can be charged using an adapter even in an automobile or the like, but there is a problem that the battery can not be charged if there is no power source device during frequent outdoor activity or movement.

In order to solve such a problem, an automatic charging device which can be integrated with a mobile phone is required. However, if such a charging device is embedded in a mobile phone, problems may arise such that the volume of the mobile phone becomes large. Therefore, there is a mobile phone case as an alternative device.

Conventionally, a mobile case such as a mobile phone case is generally made of a polymer material. In most cases, the mobile phone carries only a shock-preventing function and a design function for promoting the purchase motivation of the customer, There is a problem that the problem of dealing with exhaustion can not be solved.

10

Disclosure of Invention Technical Problem [8] Accordingly, the present invention has been made keeping in mind the above problems occurring in the prior art, and it is an object of the present invention to provide a mobile device, It is an object of the present invention to provide a mobile case having a power generation device for protecting a mobile electronic device such as a PC.

The objects of the present invention are not limited thereto, and other objects not mentioned can be clearly understood by those skilled in the art from the following description.

In order to accomplish the above object, the mobile case having the power generation device according to the present invention includes a cover portion surrounding the mobile device, a housing extending from the cover portion and defining a space therein, A first vibration assisting device provided at one side of the power generating device to increase the vibration generation efficiency by the external force and to be apart from the power generating device; And a second vibration assisting device for guiding the motion of the first vibration assisting device.

At this time, the first vibration assisting device and the second vibration assisting device may be made of magnets.

In addition, the first vibration assisting device and the second vibration assisting device may be made of mutually different electrodes.

The first vibration assist device may include a vibration guide member for amplifying vibrations due to the external force applied from the outside and transmitting the amplified vibration to the second vibration assist device.

The power generation device may include a support column protruding from a surface of the housing, a first lower conductive plate provided at an upper end of the support column, and a piezoelectric element module provided on an upper surface of the first lower conductive plate. have.

The first lower conductive plate may have a cantilevered shape with one longitudinal end portion fixed to the upper end of the support column, and the first vibration assisting device may be provided at the other longitudinal end portion of the lower conductive plate.

The piezoelectric element module may include a first piezoelectric element protruding from the upper surface of the first lower conductive plate, a first upper conductive plate provided on the upper surface of the first piezoelectric element, and a second upper conductive plate provided on the upper surface of the first upper conductive plate. And a second insulating plate.

The piezoelectric element module may further comprise a first piezoelectric element protruding from the upper surface of the first lower conductive plate, a first upper conductive plate provided on the upper surface of the first piezoelectric element, A second lower conductive plate on the upper surface of the first insulating plate, a second piezoelectric element protruding from the upper surface of the second lower conductive plate, a second upper conductive plate provided on the upper surface of the second piezoelectric plate, And a second insulating plate provided on the upper surface of the second upper conductive plate.

The mobile case equipped with the power generation device of the present invention has the following effects.

First, the mobile case is vibrated by an external force applied from the outside, and accordingly, the piezoelectric element module vibrates, so that electric power is generated and the battery of the mobile device can be charged directly or indirectly.

Second, the vibration assisting device and the vibration inducing member accelerate and increase the vibration caused by the external force, so that it is possible to produce relatively large electric power even in a small movement of the mobile case.

Third, compared with the piezoelectric element module formed as a single layer through the multilayered piezoelectric element module structure, an increased power can be produced.

Fourth, even if the user does not generate the external pressure by vibrating the mobile case arbitrarily, the charging using the power generator is facilitated through the vibration generated when the user is walking or jogging or when the vehicle is running.

The effects of the present invention are not limited to the above-mentioned effects, and other effects not mentioned can be clearly understood by those skilled in the art from the description of the claims.

BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate preferred embodiments of the invention and, together with the description, serve to further the understanding of the technical idea of the invention, And shall not be interpreted.
1 is a sectional view of a mobile case having a power generating apparatus according to a first embodiment of the present invention;
FIG. 2 is an enlarged view of the portion M of FIG. 1;
3 is an enlarged view showing a modification of Fig. 2; And
4 is a cross-sectional view of a mobile case having a power generating apparatus according to a second embodiment of the present invention.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

First Embodiment

1 is a cross-sectional view of a mobile case equipped with a power generating apparatus according to a first embodiment of the present invention. 1, a mobile case 10 having a power generating apparatus according to the present invention includes a cover 100, a housing 200, a power generator 300, a first vibration assisting device 400, And a second vibration assisting device 500.

The cover portion 100 is a device for covering at least a part of the rear surface and the side surface of a mobile device such as a mobile phone or a tablet PC to prevent the mobile device from being broken by a strong impact applied to the floor or from the outside. The cover 100 is constructed in a case commonly used in the related art, preferably a mobile device case that entirely covers the rear side of the mobile device, and thus a detailed description thereof will be omitted.

The housing 200 is formed on the rear surface or one side surface of the cover part 100 and provides a space in which the power generating device 300 can be inserted. The housing 200 and the internal space 210 may have various sizes according to the size of the mobile device, the power generation capacity of the power generation device 300, or the battery capacity of the mobile device.

For example, the housing 200 is configured to have an area corresponding to the cover 100, and the inner space 210 of the housing 200 may have a height of about 5 mm and a length of about 10 cm or more. As described above, the inner space 210 of the housing 200 is preferably formed on the rear surface of the cover part 100 because the height thereof is very small compared to the width.

However, in consideration of the shape and size of the cover part 100, the cover part 100 may be provided on one side of the side of the cover part 100 other than the rear side thereof.

As shown in FIG. 1, the power generation apparatus 300 includes a housing 200 and a housing 200. The housing 300 is provided on the inner surface of the housing 200, for example, to be. The power generating apparatus 300 may be a device capable of generating electric power by an external force generated from the outside, but it is preferable to use the power generating apparatus 300 as follows.

The power generation device 300 is composed of a support column 311, a first lower conductive plate 312, and a piezoelectric element module 313.

The supporting pillars 311 are provided so as to protrude upward from one side of the inner wall surface of the housing 200, preferably a bottom surface. At this time, the support pillar 311 may have any shape as long as it has a columnar shape, and the size of the support pillar 311 can be variously changed to correspond to the size of the inner periphery of the housing 200. For example, when the inner space 210 of the housing 200 is formed to have the above-described size, the support pillars 311 have a height of about 2 mm to 3 mm and a diameter of about 1 mm.

One end of the first lower conductive plate 312 is seated on the upper end of the support column 311 and is coupled to the upper end of the support column 311 in a cantilevered manner. The first lower conductive plate 312 is in the form of a plate, and such conductive plates are commonly used in the art, and a detailed description thereof will be omitted.

The piezoelectric element module 313 is provided on the upper surface of the first lower conductive plate 312 and generates electromotive force by pressure or impact.

Piezoelectric phenomenon refers to a phenomenon in which positive and negative electric charges appear at both ends of the crystal plate in proportion to the external force when a certain kind of crystal plate is pressurized in a certain direction.

The electromotive force appearing on a single crystal plate is weak, but the amount of electromotive force is increased when multiple sheets are stacked while inserting metal foil. In addition, if the mechanical vibration or electrical vibration applied to the crystal plate has a natural frequency according to the type and mass of the crystal plate, resonance occurs to generate more powerful electromotive force.

Here, the resonance phenomenon refers to a phenomenon in which vibration is amplified when the frequency of external forced oscillation is equal to or similar to the natural frequency of a structure or a material.

Fig. 2 is an enlarged view of the portion M in Fig. 1 enlarged. The piezoelectric element module 313 is composed of a first piezoelectric element 314, a first upper conductive plate 315 and a first insulating plate 316, as shown in Fig.

The first piezoelectric element 314 may be any device as far as it can generate an electromotive force by the impact pressure caused by an external force applied from the outside. Tourmaline crystals such as barium titanate, ammonium dihydrogenphosphate, and ethylenediamine tetra-tartarate are also excellent in piezoelectric properties in recent years. Is being used as a piezoelectric element.

As described above, the first piezoelectric element 314 can use any type of semiconductor element capable of generating an electromotive force by impact or pressure. In order to efficiently use the impact force with the diaphragm 314, Respectively.

For example, when six first piezoelectric elements 314 are used for charging for about three minutes, an AC voltage of 1.6 V can be produced to produce electric power capable of sufficiently using and charging small electronic devices such as cellular phones .

The piezoelectric element module 313 will be described in more detail as follows.

The piezoelectric element module 313 includes a plurality of first piezoelectric elements 314 formed upward from the upper surface of the first lower conductive plate 312 and a plurality of first piezoelectric elements 314 arranged in contact with the upper surfaces of the first piezoelectric elements 314, The first upper conductive plate 315 and the first upper conductive plate 315 are formed so as to be in contact with the upper surfaces of the first upper conductive plate 315 and the first upper conductive plate 315, .

The electric wires 600 are connected to the first lower conductive plate 312 and the first upper conductive plate 315 and each electric wire 600 is configured to be connected to the main body battery of the mobile device or the charging terminal of the mobile device .

The piezoelectric element module 313 having the above-described configuration is configured such that when the mobile case 10 is vibrated by an external force applied from the outside such as a movement of a user, And generates electric power. The generated power is transmitted to the body battery of the mobile device through the electric wire 600 and the charging terminal.

3 is an enlarged view showing a modification of Fig. The piezoelectric element module 313 according to the present invention may be composed of a multilayer piezoelectric element module 313 stacked in a plurality of layers as shown in FIG.

The piezoelectric element module 313 having a multi-layer structure will now be described in more detail.

The piezoelectric element module 313 composed of a multi-layer structure is constructed so as to be superimposed and stacked in the same configuration as the piezoelectric element module 313 described above.

That is, the piezoelectric element module 313 of the multilayer structure includes a plurality of first piezoelectric elements 314 formed upward from the upper surface of the first lower conductive plate 312, a plurality of first piezoelectric elements 314 arranged in the form of plates contacting the upper surfaces of the first piezoelectric elements 314 Layer piezoelectric element module 313 including a first upper conductive plate 315 and a first heat conductive plate contacting the upper surface of the first upper conductive plate 315 and formed in the same size as the first upper conductive plate 315, ).

The piezoelectric element module 313 of the second layer is provided on the single-layer piezoelectric element module 313 having the above-described configuration. This will be described in more detail as follows.

The two-layer piezoelectric element module 313 includes a second lower conductive plate 317 contacting the upper surface of the first insulating plate 316, a plurality of second piezoelectric elements 318 formed upward from the second lower conductive plate 317 A second upper conductive plate 319 in the form of a plate touching the upper surface of the second piezoelectric elements 318 and a second upper conductive plate 319 in contact with the upper surface of the second upper conductive plate 319 and formed in the same size as the second upper conductive plate 319 And a second insulating plate 320 formed on the second insulating plate 320.

If the piezoelectric element module 313 is formed in a multi-layered structure as described above, it is possible to produce relatively increased electric power as compared with the piezoelectric element module 313 formed of a single layer. However, according to the use state such as the power consumption of the mobile device to be used, the size of the housing 200, and the like, the piezoelectric element module 313 ) May be used.

The first vibration assisting device 400 is provided at one end of the power generator 300, preferably at the other end of the power generator 300 facing the support column 311, and the strength of vibration due to the external force And a device for increasing the power efficiency by increasing the vibration time. As shown in FIG. 1, the first vibration assisting device 400 may be provided on only one side of the upper surface and the lower surface of the power generator 300, And the bottom surface. If the first vibration assisting device 400 is provided on both the upper surface and the lower surface of the power generator 300, it is preferable that the pair of magnets have the same electrode.

The second vibration assisting device 500 is spaced apart from the power generating device 300 by a predetermined distance and independently moves upward and downward separately from the power generating device 300 to induce upward and reverse movement of the first vibration assisting device 400 . The second vibration assisting device 500 may be composed of a magnet in the same manner as the first vibration assisting device 400 and is configured to have a different electrode from the first vibration assisting device 400.

That is, when the first vibration assisting device 400 is made of N poles, the second vibration assisting device 500 is composed of the first vibration assisting device 400 and the S pole generating the attraction force.

At least one of the upper and lower surfaces of the second vibration assisting device 500 is provided with a vibration inducing member 510 to be coupled with the inner surface of the housing 200. The vibration guide member 510 is made of an elastic material such as a coil spring, and is repeatedly compressed and stretched by an external force applied from the outside to accelerate and increase the upward and downward movement of the second vibration assisting device 500, 2 vibration sustaining device 500. [0158] The vibration assist device 500 shown in FIG. Although the vibration guide member 510 is represented by a coil spring in the drawings and the detailed description, any device may be used as long as it can accelerate and increase the motion of the second vibration assisting device 500.

The first vibration assisting device 400 and the second vibration assisting device 500 are constituted by magnets having different polarities, respectively, but the first vibration assisting device 400 and the second vibration assisting device 500 ) May be made of a magnet, and the other one may be made of a magnetic material.

The first vibration assisting device 400 and the second vibration assisting device 500 are composed of magnets having the same polarity and use the repulsive force of the first vibration assisting device 400 and the second vibration assisting device 500 It is possible.

In another embodiment, the first vibration assisting device 400 and the second vibration assisting device 500 are constituted by a weight of metal, wood, or wood having a predetermined weight other than a magnet, and the first vibration assisting device 400 And the second vibration assisting device 500 are connected to each other via a flexible flexible material so that the first vibration assisting device 400 moves along the movement of the second vibration assisting device 500 and finally, As shown in FIG.

As described above, the first vibration assisting device 400 and the second vibration assisting device 500 may have various configurations, which can be selectively used by the user's selection.

A usage of the mobile case 10 provided with the power generating apparatus having the above-described configuration will be described as follows.

When the user carrying the mobile case 10 makes a walk or jog, or when the mobile case 10 vibrates in the mobile case 10 by boarding the vehicle or by shaking the mobile case 10, And oscillates in the upward and downward directions to generate electric power through the piezoelectric element module 313.

The second vibration assisting device 500 is repeatedly moved up and down by the elasticity of the vibration inducing member 510 separately from the upward and downward motions of the power generating device 300. At this time, since the second vibration assisting device 500 and the first vibration assisting device 400 are composed of magnets having mutually different polarities, the second vibration assisting device 500 is moved in the direction of motion of the second vibration assisting device 500 The motion of the power generating apparatus 300 is increased by increasing the motion of the power generating apparatus 300 by continuously moving along the apparatus 400, thereby further improving the power generating efficiency of the power generating apparatus 300.

Second Embodiment

4 is a cross-sectional view of a mobile case having a power generating apparatus according to a second embodiment of the present invention. The mobile case 10 equipped with the power generation apparatus according to the second embodiment of the present invention has a configuration entirely similar to that of the first embodiment described above. However, as shown in FIG. 4, the mobile case 10 having the power generation apparatus 300 according to the second embodiment has a structure in which the power generation apparatus 300 is disposed so as to be opposed to the upper and lower surfaces of the inside of the housing 200 .

Since the mobile case 10 provided with the power generation apparatus 300 according to the second embodiment has the same configuration as that of the first embodiment as a whole except that the power generation apparatuses 300 are configured as a pair, A detailed description thereof will be omitted.

As described above, those skilled in the art will understand that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive. The scope of the present invention is defined by the appended claims rather than the detailed description and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be construed as being included within the scope of the present invention.

10: Mobile case equipped with power generation device
100:
200: Housing
210: inner space
300: generator
311: support column
312: first lower conductive plate
313: Piezoelectric element module
314: first piezoelectric element
315: first upper conductive plate
316: first insulating plate
317: second lower conductive plate
318: second piezoelectric element
319: second upper conductive plate
320: second insulating plate
400: first vibration assist device
500: second vibration assist device
510: Vibration induction member
600: Wires

Claims (8)

A cover portion surrounding the mobile device;
A housing extending from the cover to form a space therein;
A power generating unit provided in the housing and generating power by an external force applied from the outside;
A first vibration assisting device provided at one side of the power generation device to increase vibration caused by the external force to increase power generation efficiency; And
A second vibration assisting device provided to be apart from the power generating device to induce a motion of the first vibration assisting device;
And a power generation device including the power generation device.
The method according to claim 1,
Wherein the first vibration assisting device and the second vibration assisting device are provided with a power generating device made of a magnet.
3. The method of claim 2,
Wherein the first vibration assisting device and the second vibration assisting device are provided with power generating devices having mutually different electrodes.
The method according to claim 1,
And a vibration inducing member for amplifying vibration generated by the external force applied from the outside to the second vibration assisting device is provided on one surface of the second vibration assisting device.
The method according to claim 1,
The power generation device includes:
A support column protruding from one surface of the housing;
A first lower conductive plate provided on an upper end of the support column; And
A piezoelectric element module provided on an upper surface of the first lower conductive plate;
Wherein the power generating device comprises:
6. The method of claim 5,
Wherein the first lower conductive plate has a cantilevered shape with one longitudinal end fixed to the upper end of the support column,
Wherein the first vibration assisting device is provided at the other end of the lower conductive plate.
6. The method of claim 5,
In the piezoelectric element module,
A first piezoelectric element protruding from an upper surface of the first lower conductive plate;
A first upper conductive plate provided on an upper surface of the first piezoelectric element; And
A first insulating plate provided on an upper surface of the first upper conductive plate;
And a power generation device including the power generation device.
6. The method of claim 5,
In the piezoelectric element module,
A first piezoelectric element protruding from an upper surface of the first lower conductive plate;
A first upper conductive plate provided on an upper surface of the first piezoelectric element;
A first insulating plate provided on an upper surface of the first upper conductive plate;
A second lower conductive plate on an upper surface of the first insulating plate;
A second piezoelectric element protruding from an upper surface of the second lower conductive plate;
A second upper conductive plate provided on the upper surface of the second piezoelectric element; And
A second insulating plate provided on an upper surface of the second upper conductive plate;
And a power generation device including the power generation device.
KR1020140027503A 2014-03-10 2014-03-10 Mobile Case Equipped With Generator KR20150106012A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
KR1020140027503A KR20150106012A (en) 2014-03-10 2014-03-10 Mobile Case Equipped With Generator
PCT/KR2015/002308 WO2015137707A1 (en) 2014-03-10 2015-03-10 Mobile case having power generation device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
KR1020140027503A KR20150106012A (en) 2014-03-10 2014-03-10 Mobile Case Equipped With Generator

Publications (1)

Publication Number Publication Date
KR20150106012A true KR20150106012A (en) 2015-09-21

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Family Applications (1)

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Country Status (2)

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KR (1) KR20150106012A (en)
WO (1) WO2015137707A1 (en)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101053256B1 (en) * 2009-10-12 2011-08-01 서울대학교산학협력단 Energy harvester
EP2534476A4 (en) * 2010-02-09 2016-03-09 Nokia Technologies Oy A method and an apparatus for monitoring an characteristic of an object in mechanical contact with a mobile terminal
KR101292195B1 (en) * 2011-12-16 2013-08-01 동아대학교 산학협력단 Battery Charger for Mobile Communication Terminals
JP2013187928A (en) * 2012-03-06 2013-09-19 Toyota Central R&D Labs Inc Oscillation power generator
CN103354434A (en) * 2013-07-02 2013-10-16 天津大学 Bistable piezoelectric cantilever beam vibration energy collector

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