JP2005347900A - Charger for mobile phone - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a charger for a mobile phone wherein a charging current can be generated by directly bending an electromotive force body with a piezoelectric ceramic loaded thereto and which is connected to a charging socket of the mobile phone so as to simply charge up the mobile phone as required. <P>SOLUTION: The charger includes: the electromotive force body 7 elastically deformable; the piezoelectric ceramic 8 fixed to a deformed part of the electromotive force body 7; a rectifier circuit 9; and a feeding plug 5 separably connected to the charging socket 14 of the mobile phone 1. The charger 2 and the mobile phone 1 are coupled via a freely removable connection fixture 3, and the charger 2 is mounted on a strap of the mobile phone 1. When the charger is in use, a pair of the electromotive force bodies 7, 7 are manually deformably operated to generate the charging current in a state that the feeding plug 5 is connected to the charging socket 14. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a charging device for a mobile phone using a piezoelectric ceramic as a power generation element.

  In connection with the present invention, a charging device using a piezoelectric ceramic (piezoelectric bi-full element) as a power generation element is known in Patent Documents 1 and 2. The charging device of Patent Document 1 includes an elastic band plate that is fixed to a mobile phone case and cantilevered, a weight that is fixed to the free end of the elastic band plate, and a piezoelectric element that is fixed to the plate surface of the elastic band plate. It is composed of a ceramic, a rectifier circuit that rectifies the current generated by the piezoelectric ceramic, and a capacitor that stores the charging current. According to this charging device, a charging current is generated by the elastic band plate and the piezoelectric ceramic being bent and deformed by an impact or vibration acting on the case. The charging device of Patent Document 2 also has the same basic principle, but differs in that a charging current is generated by collision energy when a rolling steel ball collides with a piezoelectric ceramic.

Japanese Patent Laid-Open No. 2002-171341 (paragraph number 0006, FIG. 1) JP 2001-186678 A (paragraph number 0025, FIG. 2)

  As described above, since the charging devices of Patent Documents 1 and 2 are each incorporated in a case of a mobile phone, the built-in battery can be charged simply by carrying the mobile phone without needing to be conscious of the user. However, if the voltage of the built-in battery drops below the specified value due to leaving the cell phone unused or forgetting to charge it regularly, it is necessary to restore the battery voltage by vibrating the entire cell phone. Therefore, the excitation operation for power generation was troublesome. For effective power generation, for example, it is necessary to bend and deform the piezoelectric ceramic properly, but it is not always effective, other than indirectly deforming the piezoelectric ceramic by vibrating the entire mobile phone. Power generation is not possible. Therefore, even when charging as much as necessary for the timely telephone communication, it takes a lot of time for charging.

  An object of the present invention is to provide a charging device for a mobile phone in which the charging device is configured separately from the mobile phone and can be charged by connecting to a charging socket of the mobile phone when necessary. It is an object of the present invention to generate a charging current appropriately and effectively by directly deforming an electromotive body on which a piezoelectric ceramic is mounted. For example, it is short if it is necessary for timely telephone communication. An object of the present invention is to provide a charging device for a mobile phone that can be charged quickly in time.

  An object of the present invention is to provide a charging device for a mobile phone, in which the charging device is attached to a strap of a mobile phone, and can be easily charged by connecting the charging device to a charging socket of the mobile phone when necessary. There is. An object of the present invention is to protect a plug pin of a charging device in a non-use state, to eliminate connection failure of a connection plug due to dust or the like, and to improve the reliability of the charging device.

  The charging device of the present invention includes an elastically deformable electromotive body 7, a piezoelectric ceramic 8 fixed to a deformed portion of the electromotive body 7, a rectifier circuit 9 that rectifies a current generated by the piezoelectric ceramic 8, and a mobile phone. And a power supply plug 5 that is detachably connected to the charging socket 14 of the telephone 1 and outputs a rectified charging current to the built-in battery of the mobile telephone 1. The charging current is obtained by manually deforming the electromotive body 7. The mobile phone 1 can be supplied.

  As shown in FIG. 1, the charging device includes a power supply plug 5, a case portion 6, and a pair of electromotive bodies 7, 7 projecting from the case portion 6 so as to extend forward. It can be connected to the strap of the mobile phone 1 via a detachable connector 3.

  The connection tool 3 includes a power supply plug 5 incorporating a lock mechanism and a dummy socket 13 that can be engaged and connected to the power supply plug 5, and the dummy socket 13 is connected to the mobile phone 1.

  The piezoelectric ceramic 8 is sealed in a watertight manner in a housing section 16 provided in the electromotive body 7, and a rectifier circuit 9 and a power storage body 10 for temporarily storing the rectified current are arranged inside the case portion 6. Yes.

  The charging device according to the present invention is separably connected to an elastically deformable electromotive body 7, a piezoelectric ceramic 8 fixed to a deformed portion of the electromotive body 7, a rectifying circuit 9, and a charging socket 14 of the mobile phone 1. When the electromotive body 7 is manually deformed in a state of use, with the power supply plug 5 connected to the charging socket 14 in use, the charging current can be supplied to the built-in battery of the mobile phone 1. The electromotive body 7 can be deformed manually to accurately deform the piezoelectric ceramic 8. Therefore, the charging current can be appropriately and effectively generated as compared with the conventional device in which the charging device is incorporated in the mobile phone. By removing the power supply plug 5 from the charging socket 14, the charging device 2 can be separated from the mobile phone 1, so that the charging device 2 does not get in the way when performing telephone communication.

  According to the charging device including the power supply plug 5, the case portion 6, and the pair of electromotive bodies 7, 7 protruding from the case portion 6, the pair of electromotive bodies 7, 7 are connected to each other. Since power can be generated by performing deformation operations in the approaching direction, it is possible to significantly reduce the effort for power generation compared to conventional devices that required vibrations to restore the cell voltage by adding vibration to the entire mobile phone. The time required for charging can be shortened as much as the piezoelectric ceramic 8 can be appropriately deformed. Since the charging device 2 can be attached to the strap S via the detachable connector 3, the mobile phone 1 and the charging device 2 can always be carried at the same time, and charging necessary for telephone communication in an emergency or in time can be performed. When performing, the charging device 2 is removed from the strap S and connected to the charging socket 14 of the mobile phone 1 so that the power generation operation can be easily performed without being restrained by the strap S.

  If the connection tool 3 is configured by the power supply plug 5 incorporating the lock mechanism and the dummy socket 13 that can be engaged and connected to the power supply plug 5, the cost of the connection tool 3 can be reduced by the amount of use of the power supply plug 5. By connecting the power supply plug 5 to the dummy socket 13, the power supply plug 5 can be protected by the dummy socket 13 when not in use. Wiping out can improve the reliability of the charging device.

  If the piezoelectric ceramic 8 is sealed in a watertight manner in the housing section 16 provided in the electromotive body 7, the piezoelectric ceramic 8 that dislikes water can always be maintained in an appropriate dry state. Can be added to expand the usable environmental conditions. Furthermore, by arranging the rectifier circuit 9 and the power storage unit 10 inside the case unit 6, the external appearance of the charging device 2 is simplified, and the rectified charging current is temporarily stored in the power storage unit 10 so that the charging current can be reduced. Voltage unevenness can be suppressed and the internal battery can be charged more effectively.

(Embodiment 1) FIGS. 1 to 4 show Embodiment 1 of a charging device for a mobile phone according to the present invention. 1 and 2, reference numeral 1 denotes a mobile phone, and 2 denotes a charging device. The charging device 2 can be coupled to a strap S attached to the mobile phone 1 via a detachable connector 3.

  In FIG. 3, the charging device 2 includes a power supply plug 5, a case portion 6, and a pair of arm-like electromotive bodies 7 and 7 that project from the case portion 6 in a manner that expands from the left side to the right side. Are provided in order to form a nail clipper. The upper half of the power supply plug 5 and the case portion 6 is plastic-molded integrally with the upper electromotive member 7, and the lower half of the power supply plug 5 and the case portion 6 is made of plastic integrally with the lower electromotive member 7. Molded.

  As shown in FIG. 6, each of the electromotive bodies 7 and 7 supported in a cantilever manner can be elastically deformed into a curved shape by pressing the free ends in a direction approaching each other, and when the holding force is released, a linear shape is obtained. Self-return to standby position. As a matter of course, the power supply plug 5 is composed of a connector having the same standard and the same structure as the power supply plug of the original charging device that is an accessory of the mobile phone 1.

  3 and 5, a piezoelectric ceramic 8 made of a commercially available product is mounted and fixed on the middle facing surfaces of the upper and lower electromotive bodies 7,7. The piezoelectric ceramic 8 is formed by bonding and fixing two identical ceramic elements so that the polarities of polarization of the ceramic elements are opposite to each other, and the electromotive body 7 is regularly deformed as described above. As a result, an alternating current is generated. For waterproofing, the piezoelectric ceramic 8 is housed in a housing section 16 that is recessed in the electromotive body 7 and sealed in a watertight manner by a cover 17 that is adhesively fixed to the opening surface.

  Inside the case portion 6 are a rectifier circuit 9 that rectifies the current generated by the piezoelectric ceramic 8, a capacitor (electric storage body) 10 that temporarily stores the current rectified by the rectifier circuit 9, and a plug pin of the power supply plug 5. Units are stored and arranged in a sealed manner. Reference numeral 11 denotes a circuit board disposed in the case 6. As shown in FIG. 4, the case portion 6 divided into two parts in the vertical direction is fastened and fixed by two screws 18 so as not to be separated.

  In FIG. 1, the connection tool 3 includes a dummy socket 13 connected to the mobile phone 1 and a power supply plug 5 inserted and connected to the dummy socket 13. The power supply plug 5 has a built-in lock mechanism. By simultaneously pressing the lock release buttons 19 bulging on the left and right sides of the power supply plug 5, the lock mechanism is switched to the unlocked state, and the power supply plug 5 is removed from the dummy socket 13. Can be removed. In FIG. 2, the dummy socket 13 is fixed to the strap S.

  The mobile phone 1 operates with a current supplied from a built-in battery in a normal state. When the voltage of the built-in battery falls below the operable voltage, the power supply plug 5 is removed from the dummy socket 13 and connected to the charging socket 14 of the mobile phone 1. At this time, the power supply plug 5 is mounted and held in a non-separable state by a lock mechanism that locks and engages with the charging socket 14.

  Holding the mobile phone 1 with one hand and holding the pair of electromotive bodies 7 between the thumb and index finger of the other hand, both the electromotive bodies 7 and 7 are pushed and deformed at the same time, or the pushing force Is opened and the electromotive bodies 7 and 7 are automatically returned to the standby posture. Thus, by repeatedly deforming both the electromotive bodies 7 and 7, the piezoelectric ceramics 8 and 8 are deformed to generate an alternating current. The direct current rectified by the rectifier circuit 9 and stored in the capacitor 10 charges the built-in battery of the mobile phone 1 through the power supply plug 5.

  According to the charging device 2 of the present invention, since the piezoelectric ceramics 8 and 8 can be deformed by directly operating the pair of electromotive bodies 7 and 7 by hand, the charging device is incorporated in the mobile phone. Compared to a certain case, the electromotive body 7 can be appropriately and effectively deformed. Therefore, the built-in battery of the mobile phone 1 can be quickly charged by generating power in a stable state. Since the charging device 2 is connected to the mobile phone 1 by using the strap S, the mobile phone 1 and the charging device 2 can always be carried at the same time, and in case of an emergency or when charging necessary for timely telephone communication is performed. The built-in battery can be reliably charged.

  Since the connecting tool 3 is configured using the power supply plug 5, the charging device 2 can be separated from the mobile phone 1 and connected to the charging socket 14 at the time of charging, without being restrained by the strap S, The electromotive body 7 can be operated in an open and free space. Further, when the power plug 5 is not in use, the power supply plug 5 is protected by the dummy socket 13, so that problems such as dust clogging around the plug pins and accumulation of water droplets can be eliminated.

(Example 2) FIG. 7: shows Example 2 of the charging device 2 of this invention. The charging device 2 in this case is the same as the first embodiment except that the electromotive body 7 is projected laterally from the side surface of the case portion 6, and the other components are the same as those in the first embodiment. The description is omitted.

(Example 3) FIG. 8 shows Example 3 of the charging device 2 of the present invention, in which the electromotive member 7 is formed in a ring shape, and piezoelectric ceramics 8 are arranged at three places in the circumferential direction. The electromotive body 7 is fixedly held by a holder 20 provided in the case portion 6 and is normally circular. When the entire electromotive body 7 is grasped with one hand and elastically deformed into an elliptical shape as indicated by an imaginary line, the piezoelectric ceramic 8 is deformed to generate a charging current. The electromotive body 7 in the third embodiment is made of rubber or a soft plastic material. Others are substantially the same as those in the first embodiment.

(Other Embodiments) In each of the above embodiments, the power supply plug 5, the case portion 6, and the electromotive body 7 are integrally formed. For example, the power supply plug 5 is formed independently, The case portion 6 may be connected by a power feed lead. In this case, a part of the electromotive body 7 can be connected to the mobile phone 1 with the strap S.

  The electromotive body 7 may be formed of a leaf spring. There may be at least one electromotive body 7, and a plurality of pairs may be provided as necessary. The shape of the piezoelectric ceramic 8 does not have to be the belt-like shape shown in the drawing, and can be freely changed, for example, a polygon, a circle, or an ellipse according to the size or shape of the electromotive body 7. As the connector 3, a pair of male and female plastic molded connectors can be applied, or a hook or a connecting ring with a stopper can be applied.

  The charging device 2 of the present invention is preferably used in a state of being connected to the mobile phone 1 using the strap S, but may be carried in a state of being stored in a bag or a pouch. As the power storage unit 10, a secondary battery with a small capacity can be applied.

The top view which shows the charging device of Example 1 The perspective view which shows the use condition of the charging device of Example 1. Central longitudinal side view of the charging device of Example 1 AA line sectional view in FIG. BB sectional view in FIG. The side view which shows the use condition of the charging device of Example 1. The top view which shows the charging device of Example 2 The top view which shows the charging device of Example 3

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Cellular phone 2 Charging apparatus 3 Connector 5 Power supply plug 6 Case part 7 Electromotive body 8 Piezoelectric ceramic 9 Rectification circuit 10 Power storage body 13 Dummy socket 15 Charging socket 16 Housing section

Claims (4)

  An elastically deformable electromotive body 7, a piezoelectric ceramic 8 fixed to a deformed portion of the electromotive body 7, a rectifying circuit 9 that rectifies a current generated by the piezoelectric ceramic 8, and a charging socket 14 of the mobile phone 1. A power supply plug 5 that is connected in a separable manner and outputs a rectified charging current to the built-in battery of the mobile phone 1, and is capable of supplying the charging current to the mobile phone 1 by manually deforming the electromotive body 7. A charging device for a mobile phone. A power supply plug 5, a case portion 6, and a pair of electromotive bodies 7, 7 projecting from the case portion 6 so as to expand;
The charging device for a mobile phone according to claim 1, wherein the charging device (2) can be connected to the strap (S) of the mobile phone (1) via a detachable connector (3). The connector 3 includes a power supply plug 5 incorporating a lock mechanism, and a dummy socket 13 that can be engaged and connected to the power supply plug 5.
The charging device for a mobile phone according to claim 2, wherein the dummy socket is connected to the mobile phone. Piezoelectric ceramic 8 is sealed in a watertight manner in a storage compartment 16 provided in the electromotive body 7,
The charging device for a mobile phone according to claim 2, wherein a rectifier circuit (9) and a power storage unit (10) for temporarily storing the rectified current are arranged inside the case part (6).

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