阅读说明：本技术 便携终端用发电装置 (Power generation device for portable terminal ) 是由 胜部诚 于 2020-02-04 设计创作，主要内容包括：一种便携终端用发电装置,具有：装配构件,装配在具有充电部的便携终端上；悬臂状的弹性板,设置在所述装配构件上,一端侧经由所述装配构件固定在所述便携终端上；基板,具有挠性,在所述弹性板的板厚方向上与所述弹性板相向配置；片状的压电构件,被所述基板与所述弹性板夹持；操作构件,设置在所述装配构件上,通过手动操作使所述压电构件与所述基板以及所述弹性板一起变形并进行发电；连接单元,将所述压电构件与所述充电部电连接。(A power generation device for a mobile terminal includes: a mounting member mounted on a portable terminal having a charging part; a cantilever-like elastic plate provided on the mounting member, one end side of which is fixed to the mobile terminal via the mounting member; a flexible substrate disposed opposite to the elastic plate in a plate thickness direction of the elastic plate; a sheet-like piezoelectric member sandwiched between the substrate and the elastic plate; an operation member provided on the mounting member, the operation member being manually operated to deform the piezoelectric member together with the substrate and the elastic plate and generate electric power; a connection unit electrically connecting the piezoelectric member and the charging part.)

1. A power generation device for a portable terminal, wherein,

comprising:

a mounting member mounted on a portable terminal having a charging part,

a cantilever-like elastic plate provided on the mounting member and having one end fixed to the mobile terminal via the mounting member,

a substrate having flexibility and disposed opposite to the elastic plate in a plate thickness direction of the elastic plate,

a sheet-like piezoelectric member sandwiched between the substrate and the elastic plate,

an operating member provided on the mounting member, the operating member generating power by manually deforming the piezoelectric member together with the substrate and the elastic plate,

a connection unit electrically connecting the piezoelectric member and the charging portion;

the operating member is a grip member that is elastically deformed by a gripping operation as the manual operation,

the grip member extends to a side of the portable terminal, and the free end side of the elastic plate is pressed by the grip operation to deform the piezoelectric member.

2. The power generation device for a portable terminal according to claim 1,

the elastic plate has a flat plate portion including the one end, fixed to the portable terminal via the attachment member, and disposed in parallel with a side surface of the portable terminal, and an arc-shaped portion including the free end, protruding from the flat plate portion toward a side of the portable terminal, and elastically deformed by the holding operation.

3. A power generation device for a portable terminal, wherein,

comprising:

a mounting member mounted on a portable terminal having a charging part,

a cantilever-like elastic plate provided on the mounting member and having one end fixed to the mobile terminal via the mounting member,

a substrate having flexibility and disposed opposite to the elastic plate in a plate thickness direction of the elastic plate,

a sheet-like piezoelectric member sandwiched between the substrate and the elastic plate,

an operating member provided on the mounting member, the operating member generating power by manually deforming the piezoelectric member together with the substrate and the elastic plate,

a connection unit electrically connecting the piezoelectric member and the charging portion;

the operating member is a rotating cam that rotates by a rotating operation as the manual operation,

the rotating cam is attached to the attachment member so as to be rotatable with respect to the attachment member in a direction in which a thickness direction of the portable terminal is a rotation axis, a part of the rotating cam protrudes to a side of the portable terminal, and the piezoelectric member is deformed by pressing a free end side of the elastic plate by the rotating operation.

4. The power generation device for a mobile terminal according to any one of claims 1 to 3, wherein the connection means has a rectifier circuit that rectifies a current generated by the piezoelectric member.

5. The power generation device for a portable terminal according to any one of claims 1 to 3,

the mounting member includes a housing accommodating the portable terminal,

the connection unit is built in the housing.

6. The power generation device for a portable terminal according to claim 4,

the mounting member includes a housing accommodating the portable terminal,

the connection unit is built in the housing.

Technical Field

The present invention relates to a power generation device for a mobile terminal.

Background

Conventionally, it has been known to use a piezoelectric element for a power generating device of a mobile terminal such as a mobile phone (see, for example, japanese patent laid-open nos. 2003-061367, 2003-061368, 2003-061369, and 4048175).

However, the conventional portable terminals such as smartphones and tablet computers have problems that the battery life is short and frequent charging is required. The charging operation uses an AC power source, and each portable terminal needs to use its dedicated charger.

In addition, a lithium ion battery is used as a power source of a current portable terminal. In the future, it is estimated that lithium ion batteries will be improved or long-life power sources realized by fuel cells or the like will be applied, but they are not yet on the market.

Therefore, there is a need in the market for a power generation device that can charge a charging unit of a portable terminal by a simple operation.

Disclosure of Invention

In view of the above circumstances, an object of the present invention is to provide a power generation device for a mobile terminal, which can charge a mobile terminal having a charging unit by a simple manual operation.

A power generation device for a mobile terminal according to a first aspect of the present invention includes: the piezoelectric device includes a mounting member mounted on a mobile terminal having a charging section, a cantilever-like elastic plate provided on the mounting member, one end side of the elastic plate being fixed to the mobile terminal, a substrate having flexibility and disposed opposite to the elastic plate in a plate thickness direction of the elastic plate, a sheet-like piezoelectric member sandwiched between the substrate and the elastic plate, an operating member provided on the mounting member, the operating member being configured to generate electric power by deforming the piezoelectric member together with the substrate and the elastic plate by a manual operation, and a connecting unit electrically connecting the piezoelectric member and the charging section.

A power generating device for a portable terminal according to a second aspect of the present invention is the power generating device for a portable terminal according to the first aspect, wherein the operating member is a grip member that is elastically deformed by a grip operation as the manual operation, the grip member is projected to a side of the portable terminal, and the free end side of the elastic plate is pressed by the grip operation to deform the piezoelectric member.

A power generating device for a portable terminal according to a third aspect of the present invention is the power generating device for a portable terminal according to the second aspect, wherein the elastic plate has a flat plate portion including the one end, fixed to the portable terminal, and arranged in parallel with a side surface of the portable terminal, and an arc-shaped portion including the free end, protruding from the flat plate portion toward a side of the portable terminal, and elastically deformed by the holding operation.

A power generating device for a portable terminal according to a fourth aspect of the present invention is the power generating device for a portable terminal according to the first aspect, wherein the operating member is a rotating cam that rotates by a rotating operation as the manual operation, a part of the rotating cam protrudes to a side of the portable terminal, and the piezoelectric member is deformed by pressing a free end side of the elastic plate by the rotating operation.

A power generation device for a portable terminal according to a fifth aspect of the present invention is the power generation device for a portable terminal according to any one of the first to fourth aspects, wherein the connection means includes a rectifier circuit that rectifies a current generated by the piezoelectric member.

A power generating device for a portable terminal according to a sixth aspect of the present invention is the power generating device for a portable terminal according to any one of the first to fifth aspects, wherein the mounting member includes a housing for accommodating the portable terminal, and the connecting means is incorporated in the housing.

ADVANTAGEOUS EFFECTS OF INVENTION

According to the present invention, it is possible to provide a power generation device for a mobile terminal capable of charging a mobile terminal having a charging unit by a simple manual operation.

Drawings

Fig. 1A is a front view of a mobile terminal equipped with a power generation device for a mobile terminal of a first embodiment.

Fig. 1B is a side view of the portable terminal in fig. 1A.

Fig. 1C is a rear view of the portable terminal in fig. 1A.

Fig. 2A is an enlarged cross-sectional view of a portion indicated by an arrow a in fig. 1C.

Fig. 2B is an enlarged sectional view showing a state after the operation member in fig. 2A is operated.

Fig. 3A is a front view of a mobile terminal equipped with a power generation device for a mobile terminal of the second embodiment.

Fig. 3B is a side view of the portable terminal in fig. 3A.

Fig. 3C is a rear view of the portable terminal in fig. 3A.

Fig. 4A is an enlarged cross-sectional view of a portion indicated by an arrow B in fig. 3C.

Fig. 4B is an enlarged sectional view showing a state after the operation member in fig. 4A is operated.

Fig. 5A is a front view of the portable terminal showing a state in which the portable terminal is accommodated in a housing provided in the power generation device for a portable terminal of the third embodiment.

Fig. 5B is a side view of the portable terminal in fig. 5A.

Fig. 5C is a rear view of the portable terminal in fig. 5A.

Description of the reference numerals

20 generating set (generating set for portable terminal)

22 casing (Assembly component)

24 elastic plate

24A end

24B flat plate part

24C free end

24D arc part

26 base plate

28 piezoelectric element

30 holding member (operating member)

32 connecting device (connecting unit)

34 rectification circuit

50 generating set (generating set for portable terminal)

52 casing (Assembly component)

54 elastic plate

54A end

54B free end

56 substrate

58 rotating cam (operating member)

70 electric generator (electric generator for portable terminal)

72 casing (Assembly component)

74 outer casing

100 portable terminal

102 Battery (charging part)

Detailed Description

(first embodiment)

A power generation device for a portable terminal (hereinafter, referred to as a "power generation device" as appropriate) according to a first embodiment of the present invention will be described with reference to the drawings. Note that arrows X, Y, and Z shown in the drawings indicate the height direction, width direction, and thickness direction of the mobile terminal 100 equipped with the power generation device 20, respectively. Hereinafter, the terms "height direction X", "width direction Y", and "thickness direction Z" refer to the height direction, width direction, and thickness direction of the mobile terminal 100.

First, the portable terminal 100 equipped with the power generator 20 of the present embodiment will be described, and then, the power generator 20 of the present embodiment will be described.

As shown in fig. 1A, 1B, and 1C, a mobile terminal 100 according to the present embodiment is a mobile information terminal (i.e., a mobile terminal) having a battery 102 as a charging unit, and an example thereof is a smartphone. In addition, the present invention is not limited to this structure. The portable terminal may be a mobile phone, a tablet computer, or the like.

The portable terminal 100 has a substantially rectangular plate shape and operates using electricity stored in the battery 102. The battery 102 is, for example, a lithium ion battery.

[ Power generating device ]

As shown in fig. 2A, the power generation device 20 includes a case 22 (see fig. 1C), an elastic plate 24, a substrate 26, a piezoelectric member 28, a grip member 30, and a connection device 32.

(Assembly component)

The case 22, which is an example of a mounting member, is a member mounted on the rear surface 100B (the rear surface when the operation surface is the front surface 100A) of the portable terminal 100, and has a box shape. The case 22 accommodates therein a rectifier circuit 34 and wiring, which will be described later. The case 22 is made of a resin material and is bonded to the back surface 100B of the mobile terminal 100 by an adhesive member such as a tape. In the present embodiment, the case 22 is bonded to the rear surface 100B of the mobile terminal 100, but the present invention is not limited to this configuration. For example, a bracket or the like may be attached to the mobile terminal 100, and the case 22 may be attached to the bracket, or the case 22 may be attached to the back surface of a dedicated housing of the mobile terminal 100.

(elastic plate)

As shown in fig. 2A, the elastic plate 24 is a flexible and elastically deformable plate material, and a plate spring is used in the present embodiment. The elastic plate 24 is provided on the side surface 22A of the housing 22, and is formed in a cantilever state in which one end 24A (an upper end in the height direction X in fig. 1A, 1B, and 1C) is fixed to the side surface 22A. Specifically, the elastic plate 24 is fixed to the mobile terminal 100 at the one end 24A side thereof via the substrate 26, the piezoelectric member 28, and the case 22.

The elastic plate 24 has a flat plate portion 24B, and the flat plate portion 24B includes one end 24A of the elastic plate 24, is fixed to the mobile terminal 100 via the case 22, and is disposed along the side surface 22A of the case 22. Here, when the housing 22 is properly attached to the rear surface 100B of the mobile terminal 100, the side surface 22A of the housing 22 is parallel to the side surface 100C of the mobile terminal 100. Therefore, the flat plate portion 24B of the elastic plate 24 is disposed parallel to the side surface 100C of the mobile terminal 100.

Further, the elastic plate 24 has an arc-shaped portion 24D, and the arc-shaped portion 24D includes a free end 24C of the elastic plate 24 and projects from the flat plate portion 24B toward the side of the mobile terminal 100, and is elastically deformed by the gripping operation of the gripping member 30. The arc-shaped portion 24D of the elastic plate 24 is curved so that the distance from the free end 24C to the side surface 22A becomes maximum.

(substrate)

As shown in fig. 2A, the substrate 26 is a flexible and elastically deformable plate material, and a plate spring is used in the present embodiment. The substrate 26 is disposed opposite to the elastic plate 24 in the plate thickness direction of the elastic plate 24. Specifically, the substrate 26 is disposed opposite to the side surface 22A of the case 22, and the elastic plate 24 is disposed with the piezoelectric member 28 interposed therebetween (sandwiched and fixed). The substrate 26 of the present embodiment is separated from the elastic plate 24 by a distance corresponding to the thickness of the piezoelectric member 28 as a whole, but the present invention is not limited to this structure. The base plate 26 is formed in a shape corresponding to the elastic plate 24. Specifically, the base plate 26 has a flat plate portion 26B and an arc-shaped portion 26D, the flat plate portion 26B having a shape corresponding to the flat plate portion 24B of the elastic plate 24, and the arc-shaped portion 26D having a shape corresponding to the arc-shaped portion 24D. Similarly to the elastic plate 24, the end of the base plate 26 opposite to the flat plate portion 26B of the arc-shaped portion 26D is also a free end 26C. One end 26A of the base plate 26 is fixed to the side surface 22A of the housing 22 together with one end 24A of the elastic plate 24.

In the present embodiment, the flat plate portion 26B of the substrate 26 is fixed to the side surface 22A by an adhesive member not shown. Examples of the adhesive member include a double-sided tape. The fixing method is not limited as long as the flat plate portion 26B of the substrate 26 can be fixed to the side surface 22A.

(piezoelectric Member)

As shown in fig. 2A, the piezoelectric member 28 is a sheet-like member (so-called piezoelectric element) that generates electricity by utilizing a piezoelectric effect. The piezoelectric member 28 is a piezoelectric film and is mounted on the surface of the substrate 26 opposite to the side surface 22A of the case 22. In the present embodiment, the piezoelectric member 28 is bonded to the elastic plate 24 and the substrate 26, respectively. Specifically, the elastic plate 24 and the substrate 26 are bonded via the piezoelectric member 28.

The piezoelectric member 28 may be made of polyvinylidene fluoride (PVDF), lead zirconate titanate (PZT), or barium titanate (BaTiO), for example₃) And the like (for example, 20 to 200 μm in thickness).

(operating means)

The grip member 30, which is one example of an operating member, is a member that is provided on the housing 22 and that operates by manual operation. Specifically, as shown in fig. 2B, the gripping member 30 is a member that is elastically deformed by a gripping operation as a manual operation. As a material for forming the grip member 30, for example, a material having elasticity such as a cushioning material or a rubber material can be used.

The grip member 30 projects to project to the side of the mobile terminal 100, and covers the elastic plate 24, the substrate 26, and the piezoelectric member 28 that are disposed facing up and down on the side surface 22A of the housing 22 (the free ends 24C are disposed facing each other). The power generating units including the elastic plate 24, the substrate 26, and the piezoelectric member 28 are disposed on the side surfaces 22A of the case 22 so as to face each other vertically and are disposed on the two side surfaces 22A of the case 22. That is, in the present embodiment, a total of 4 power generation units are used. The central portion of the gripping member 30 in the height direction X protrudes, and is easily gripped by the thumb and the flat portion near the base of the thumb and other fingers (fingers other than the thumb) (see fig. 1A). The elastic plates 24 are arranged such that the free ends 24C are located near the center of the grip member 30. Therefore, as shown in fig. 2B, when the grip member 30 is gripped and operated, the free end 24C side of the elastic plate 24 is pressed against the side surface 22A, and the piezoelectric member 28 deforms together with the elastic plate 24 and the substrate 26 to generate power.

(connection unit)

The connection device 32, which is one example of a connection unit, is a device for electrically connecting the piezoelectric member 28 and the battery 102 of the portable terminal 100. The connection device 32 includes a rectifier circuit 34 that rectifies the current generated by the piezoelectric member 28, a connection terminal 36 that is inserted into and connected to a charging terminal, not shown, on the mobile terminal 100, and a harness 38 that extends from the piezoelectric member 28 to the connection terminal 36.

Next, the operation and effect of the power generation device 20 of the present embodiment will be described.

As shown in fig. 2B, in the power generation device 20, the operator holding the mobile terminal 100 and gripping the grip member 30 repeatedly performs the gripping operation to repeatedly press the free end 24C side of the elastic plate 24 disposed in the grip member 30 toward the side surface 22A, and in the present embodiment, repeatedly presses the free end 24C side of the elastic plate 24 disposed in the grip member 30 toward the side surface 22A by repeatedly squeezing the grip member 30 protruding from each of the two side surfaces 100C of the mobile terminal 100. This deforms the piezoelectric member 28 together with the elastic plate 24 and the substrate 26, thereby generating power. Specifically, when the free end 26C side is pressed, the arc-shaped portion 24D of the elastic plate 24 is elongated and deformed along the side surface 22A of the housing 22. As the piezoelectric member 28 is deformed, the piezoelectric member is also deformed, and power generation is performed by the piezoelectric effect. The current generated at this time is in a pulse shape, but is smoothed by the rectifier circuit 34, and is supplied from the connection terminal 36 to the battery 102 of the mobile terminal 100 through the electric wiring 38, thereby charging the battery 102.

Here, in the power generation device 20, the battery 102 of the mobile terminal 100 can be charged by the holding operation of holding the mobile terminal 100 by the holding member 30. That is, the power generation device 20 has a particular effect that the portable terminal 100 having the battery 102 can be charged by a simple manual operation. Further, since the battery 102 of the mobile terminal 100 can be charged by gripping the grip member 30 when the mobile terminal 100 is operated or the like, the number of times of charging the mobile terminal 100 can be reduced. Further, it is not necessary to carry a dedicated charger for the portable terminal 100.

In the power generation device 20 of the above embodiment, one piezoelectric member 28 is disposed between the elastic plate 24 and the substrate 26, but the present invention is not limited to this configuration. For example, a plurality of piezoelectric members 28 may be disposed between the elastic plate 24 and the substrate 26. This arrangement of the plurality of piezoelectric members 28 can increase the output voltage of the power generation device 20. Further, a configuration using a plurality of piezoelectric members may be applied to a second embodiment and a third embodiment described later.

(second embodiment)

Next, the power generation device 50 of the present embodiment will be described with reference to fig. 3A, 3B, 3C, 4A, and 4B. In the present embodiment, the power generation device 50 is mounted on the mobile terminal 100.

[ Power generating device ]

As shown in fig. 3C and 4A, the power generation device 50 includes a housing 52, an elastic plate 54, a base plate 56, the piezoelectric member 28, a rotating cam 58, and the connection device 32.

(Assembly component)

The case 52, which is one example of a mounting member, is a member mounted on the rear surface 100B of the portable terminal 100, and has a box shape. The rectifier circuit 34 and the wiring are housed in the case 52. The case 52 is made of a resin material, and is bonded to the back surface 100B of the mobile terminal 100 by an adhesive member such as a tape. Further, the method of assembling the case 52 to the portable terminal 100 may be the same as the case 22 of the first embodiment.

(elastic plate)

The elastic plate 54 is a flat plate-shaped plate spring, and is formed in a cantilever state in which one end 54A is supported by a support portion 55 provided in the case 52. Further, the free end 54B of the elastic plate 54 is lifted by the rotating operation of the rotating cam 58.

(substrate)

The base plate 56 is a flat plate spring, and is formed in a cantilever state in which one end 56A is supported by the support portion 55. The substrate 56 is disposed opposite to the elastic plate 54 in the plate thickness direction of the elastic plate 54. Specifically, the substrate 56 is disposed to face the elastic plate 54 in the height direction Z with the sheet-shaped piezoelectric member 28 interposed therebetween (sandwiched and fixed).

(operating means)

The rotating cam 58 as one example of the operating member is a member that is provided on the housing 52 and operates by manual operation. Specifically, as shown in fig. 3C and 4A, the rotating cam 58 is a member that rotates by a rotating operation as a manual operation. A plurality of cam portions 58A projecting outward are formed at intervals in the circumferential direction on the rotating cam 58. The rotating cam 58 is attached to the housing 52 so as to be rotatable with respect to the housing 52 about the thickness direction Z as a rotation axis. Here, when the rotating cam 58 is rotated, the free end 54B of the elastic plate 54 is pushed up by the cam portion 58A, and the elastic plate 54 is bent and deformed. Along with this deformation, the piezoelectric member 28 is also bent and deformed, and power generation is performed by the piezoelectric effect. The current generated by the piezoelectric member 28 is supplied to the battery 102 of the portable terminal 100 through the rectifier circuit 34, the harness 38, and the connection terminal 36.

Next, the operation and effect of the power generation device 50 of the present embodiment will be described.

In the power generation device 50, when the operator who holds the mobile terminal 100 rotates (rotates) the rotating cam 58 with his or her finger, the free end 54B of the elastic plate 54 is pushed up by the cam portion 58A of the rotating cam 58 (see fig. 4B), and the elastic plate 54 is bent and deformed, and the piezoelectric member 28 is also bent and deformed in accordance with the deformation, and power is generated. When the cam portion 58A is separated from the free end 54B, the elastic plate 54 is restored to the original state by the restoring force. That is, the elastic plate 54 is repeatedly bent and deformed by the rotation of the rotating cam 58, and the piezoelectric member 28 generates power in accordance with the deformation. The current generated at this time is in a pulse shape, but is smoothed by the rectifier circuit 34, and is supplied from the connection terminal 36 to the battery 102 of the mobile terminal 100 through the electric wiring 38, thereby charging the battery 102.

Here, in the power generation device 50, the battery 102 of the mobile terminal 100 can be charged by a rotating operation of rotating the rotating cam 58 while holding the mobile terminal 100. That is, the power generation device 20 has a particular effect that the portable terminal 100 having the battery 102 can be charged by a simple turning operation. Further, since the battery 102 of the mobile terminal 100 can be charged by rotating the rotating cam 58 when the mobile terminal 100 is operated or the like, the number of times of charging the mobile terminal 100 can be reduced. Further, it is not necessary to carry a dedicated charger for the portable terminal 100.

(third embodiment)

Next, the power generation device 70 of the present embodiment will be described with reference to fig. 5A, 5B, and 5C. In the present embodiment, the power generation device 70 is mounted on the mobile terminal 100.

The power generation device 70 of the present embodiment is different from the power generation device 20 of the first embodiment in that a case 72 as one example of a fitting member includes a housing 74 that houses a portable terminal 100. The other configuration of the power generator 70 is the same as that of the power generator 20 of the first embodiment, and therefore, the description thereof is omitted. In the drawings, the same components as those of the first embodiment are denoted by the same reference numerals.

The housing 72 is integrally formed with the outer shell 74. The housing 72 has the same structure as the housing 22 of the first embodiment. The housing 74 is a housing for accommodating the mobile terminal 100, and incorporates the connection device 32. Specifically, the harness 38 is built in the rear wall 74A of the housing 74, and the harness 38 is connected to the connection terminal 36 protruding from the lower frame 74B of the housing 74 toward the inside of the housing.

Next, the operation and effect of the power generator 70 of the present embodiment will be described. Note that the same operations and effects as those obtained in the first embodiment will be appropriately omitted.

In the power generator 70 of the present embodiment, the case 74 of the portable terminal 100 is included in the case 72, and therefore, for example, the assembly work of the power generator 70 is easier than a structure in which a power generator is separately assembled to a case for the portable terminal 100. In addition, since the harness 38 is inserted into the housing 74, the appearance is more beautiful and the use is more convenient than a structure in which the harness 38 is present outside, for example.

Further, the configuration of the third embodiment can also be applied to the second embodiment. That is, the case 52 of the power generation device 50 according to the second embodiment may include a housing for accommodating the mobile terminal 100.

The case 22 of the power generator 20 according to the first embodiment and the case 52 of the power generator 50 according to the second embodiment may have the same housing that houses the portable terminal 100. In other words, the power generation devices 20 and 50 may be provided in one housing.

While some embodiments of the present invention have been described above, it is obvious that the present invention is not limited to the above description, and various modifications other than the above can be made without departing from the scope of the present invention.