JP6560722B2 - Power receiving antenna, power receiving device, antenna component, and method of assembling power receiving antenna - Google Patents

Description

  The present disclosure relates to a power receiving antenna, a power receiving device, an antenna component, and a method for assembling the power receiving antenna.

  A power receiving device that reflects radio waves by a reflecting mirror that is integrated with an antenna to increase power receiving efficiency is known (see, for example, Patent Document 1).

JP 2003-258544 A

  The power receiving apparatus may be adjusted based on the relationship with the power transmitting apparatus so that the power receiving efficiency is increased.

  The present disclosure has been made in view of the above points, and an object thereof is to provide a power receiving antenna, a power receiving device, an antenna component, and a method for assembling the power receiving antenna that can be adjusted so as to improve power receiving efficiency.

The power receiving antenna according to an embodiment of the present disclosure to achieve the above object, comprises a first component, have a second part detachably attached to the first part, an antenna portion for receiving a radio wave power supply. The power receiving antenna includes an output unit connected to the antenna unit and including a positive electrode and a negative electrode. The power receiving antenna includes a housing that stores the first component and the second component and has a longitudinal direction. The directivity of the antenna unit changes when the second part is attached to or detached from the first part. The positive electrode and the negative electrode are respectively located at both ends of the casing in the longitudinal direction .

An antenna component according to an embodiment of the present disclosure that achieves the above object changes the directivity of the antenna unit that receives radio wave power by attaching to and detaching from another component, and the other component is attached to a casing having a longitudinal direction. And a part of the antenna unit connected to an output unit including a positive electrode and a negative electrode located at both ends in the longitudinal direction of the housing.

The assembly method of the power receiving antenna according to an embodiment of the present disclosure to achieve the above object, the a first component constituting at least a part of the antenna unit for receiving a radio wave power supply, by detachably against the first part Combining a second component that changes the directivity of the antenna unit . The assembling method includes a step of adjusting a power reception amount of the antenna unit in a state where the first component and the second component are fixed in the first mode. The assembly method includes a step of fixing the first component and the second component in a second mode stronger than the first mode in a state where the adjustment of the amount of power received by the antenna unit is completed.

  According to the power receiving antenna, the power receiving device, the antenna component, and the power receiving antenna assembly method according to an embodiment of the present disclosure, the power receiving efficiency can be improved.

It is a block diagram which shows the structural example of the power receiving antenna which concerns on one Embodiment. It is an external appearance perspective view which shows the structural example of the power receiving antenna which concerns on one Embodiment. It is a figure which shows an example of the power transmission system containing a power receiving apparatus and a power transmission apparatus. It is a perspective view which shows the structural example of an antenna part. It is a perspective view which shows the structural example of an antenna part. It is an external appearance perspective view which shows an example of the attachment part of an antenna component. It is a flowchart which shows an example of the assembly procedure of a receiving antenna. It is a block diagram which shows the structural example of the power receiving antenna which concerns on one Embodiment.

  As shown in FIG. 1, the power receiving antenna 1 according to an embodiment includes an antenna unit 10. The antenna unit 10 further includes a first component 20 and a second component 30 that can be attached to and detached from the first component 20. The second part 30 can be attached to or removed from the first part 20. The antenna unit 10 can function as an antenna with only the first component 20, and can also function as an antenna as a whole by combining the first component 20 and the second component 30. The first component 20 and the second component 30 are also referred to as antenna components. It can be said that each of the first component 20 and the second component 30 constitutes at least a part of the antenna unit 10.

  The power receiving antenna 1 may further include an output unit 50. The antenna unit 10 may be electrically connected to the output unit 50 and output the received radio wave to the output unit 50. The output unit 50 may convert the radio wave input from the antenna unit 10 into DC power. The output unit 50 may include a rectifier circuit. The power receiving antenna 1 may be electrically connected to the power receiving device 60 via the output unit 50. The power receiving antenna 1 may supply power to the power receiving device 60 via the output unit 50. That is, the power receiving antenna 1 can receive power from the antenna unit 10 and can feed power to the power receiving device 60.

  As shown in FIG. 2, the power receiving antenna 1 may include a housing 40 that stores the first component 20 and the second component 30. The housing 40 may have a longitudinal direction. In FIG. 2, the longitudinal direction of the housing 40 is along the X-axis direction. The output unit 50 of the power receiving antenna 1 may include a positive electrode 51 and a negative electrode 52. The positive electrode 51 and the negative electrode 52 may be located at both ends in the longitudinal direction of the housing 40. The positive electrode 51 and the negative electrode 52 may correspond to battery electrodes used in the power receiving device 60.

  As illustrated in FIG. 3, the power transmission system 100 may include power reception devices 60 a and 60 b and a power transmission device 300. The power receiving devices 60a and 60b are collectively referred to as the power receiving device 60. The power transmission device 300 converts the power supplied from the power system or the battery into a radio wave for radio power feeding and outputs the radio wave to the power receiving device 60. The power transmission device 300 may include an antenna and an oscillator. The power receiving device 60 can receive electric power from the power transmission device 300 by receiving the radio waves from the power transmission device 300. When the power receiving antenna 1 is connected to each power receiving device 60, the power receiving antenna 1 may have directivity so as to efficiently receive radio waves from the direction in which the power transmitting device 300 is located.

  The power receiving device 60 may be a clock, a remote controller, a terminal device, or the like, for example. The power receiving device 60 may be a device driven by a battery. The battery may be a dry battery having various shapes such as a columnar shape, a prismatic shape, or a disk shape. The battery may correspond to a diameter defined by a predetermined standard. The predetermined standard may be, for example, IEC 60086 or JISC 8500. The housing 40 of the power receiving antenna 1 may have the same or similar shape as the battery used in the power receiving device 60. The power receiving antenna 1 may be configured to replace a battery. By replacing the battery with the power receiving antenna 1, the power receiving device 60 may not have a separate configuration for holding the power receiving antenna 1. As a result, the power receiving antenna 1 is easily incorporated into the power receiving device 60.

  As shown in FIGS. 4 and 5, the first component 20 includes a director 21 for receiving radio waves. The director 21 may include a metal such as copper, or may include a non-metallic conductive material such as carbon. The director 21 may include a conductor having various shapes such as a linear shape, a curved shape, or an annular shape. As illustrated in FIGS. 4 and 5, the director 21 is configured by a linear portion 21 a configured by a linear conductive wire and a curved portion 21 b configured by a curved conductive wire or an annular conductive wire. It may include at least one of the circular part 21c. The director 21 is not limited to a conducting wire, and may include conductors of various shapes such as a plate shape such as a flat surface or a curved surface, or a three-dimensional shape. The annular portion 21c illustrated in FIG. 4 and FIG. 5 is divided on the negative direction side of the Z axis, but may be divided at other portions or may be connected around without being divided.

  The first component 20 may further include a director holder 22 that holds the director 21. 4 and 5, the shape of the waveguide holder 22 is represented by a cylinder, but is not limited thereto, and may be another shape. The director holder 22 may include a dielectric. The first component 20 may be, for example, a monopole antenna, a dipole antenna, or a loop antenna. The first component 20 may further include a power feeding unit 23 that is electrically connected to the director 21. The antenna unit 10 may be electrically connected to the output unit 50 via the power feeding unit 23, and may output the power obtained by receiving the radio wave by the first component 20 to the output unit 50.

  The second component 30 may have a conductor pattern or a dielectric pattern that changes the directivity characteristics of the antenna unit 10 as a whole when attached to the first component 20. The conductor pattern may include a metal or a non-metallic conductive material. The conductor pattern may include a wire having various shapes such as a linear shape, a curved shape, or an annular shape. The conductor pattern is not limited to a conductive wire, and may include conductors of various shapes such as a plate shape such as a flat surface or a curved surface, or a three-dimensional shape. The dielectric pattern may include various dielectrics such as resin or ceramic. The dielectric pattern may be linear or planar, or may be a three-dimensional shape.

  When the second component 30 is attached to the first component 20, the antenna unit 10 may function as an antenna as a whole. The directivity characteristics of the antenna unit 10 as a whole can be determined by the combination of the waveguide 21 of the first component 20 and the conductor pattern or dielectric pattern of the second component 30. The directivity characteristic of the antenna represents a distribution of reception sensitivity with respect to a radio wave incident on the antenna from each direction. When the reception sensitivity with respect to the radio wave incident from each direction on the antenna is substantially uniform or within a predetermined range, the directivity characteristic of the antenna is also said to be omnidirectional. In other words, the antenna is omnidirectional. When the reception sensitivity with respect to a radio wave incident from one direction with respect to an antenna is larger than the reception sensitivity with respect to a radio wave incident from another direction by a predetermined value or more, the directivity characteristic of the antenna is also called directivity. In other words, the antenna is also said to have directivity.

  The first component 20 can receive radio waves regardless of whether or not the second component 30 is attached. That is, the first component 20 can function as an antenna regardless of whether the second component 30 is attached. When the first component 20 functions as an antenna, the directivity of the first component 20 can be determined by the shape of the conductor pattern. The first component 20 may be omnidirectional or directional.

  When the second component 30 is attached to and detached from the first component 20, the directivity characteristics of the antenna unit 10 as a whole can change. When the directivity of the first component 20 is close to omnidirectional, for example, like a dipole antenna, the directivity of the antenna unit 10 as a whole can be enhanced by attaching the second component 30 to the first component 20. When the directivity of the first component 20 is directional, such as a loop antenna, the directivity of the antenna unit 10 as a whole is increased or decreased by attaching the second component 30 to the first component 20. sell.

  The second component 30 may be detachably attached to the first component 20 by, for example, a hook-and-loop fastener. The second component 30 may be detachably attached to the first component 20 by, for example, screwing. The second component 30 may be detachably attached to the first component 20 by a method using frictional force or adhesive force. The second component 30 is not limited to these examples, and may be detachably attached to the first component 20 by various methods. The second component 30 can be easily replaced by being detachably attached to the first component 20. By easily exchanging the second component 30, the directivity characteristics of the entire antenna unit 10 can be easily adjusted. The directivity characteristics of the antenna unit 10 may be adjusted so as to increase the directivity based on the positional relationship with the power transmission device 300 or may be adjusted so as to increase the omnidirectionality. The power receiving efficiency of the power receiving antenna 1 can be improved by adjusting the directivity characteristics of the antenna unit 10.

  As illustrated in FIGS. 4 and 5, the second part 30 may be larger than the first part 20 when viewed from the Z-axis direction. The second component 30 may be planar as illustrated in FIG. As illustrated in FIG. 5, the second component 30 may have a curved shape. The second component 30 may reflect the radio wave traveling in the negative direction from the positive direction of the Z axis toward the first component 20. By doing in this way, the antenna part 10 can receive an electromagnetic wave in a wider range as a whole. As a result, the power receiving efficiency of the power receiving antenna 1 can be increased. The magnitude | size or shape of the 2nd component 30 is not restricted to the aspect illustrated by FIG.4 and FIG.5.

  The conductor pattern or dielectric pattern of the second component 30 may be deformable. The second component 30 may be in the form of a film, for example. The second component 30 may be movable with respect to the first component 20 while being attached to the first component 20. By doing in this way, the directivity characteristic as the whole antenna part 10 can be adjusted easily. As a result, the power receiving efficiency of the power receiving antenna 1 can be increased.

  As shown in FIG. 6, the first component 20 may include an attachment portion 24 to which the second component 30 can be attached. The second component 30 may include an attachment portion 31. The attachment part 24 and the attachment part 31 may be configured to correspond to each other. As illustrated in FIG. 6, the attachment portion 24 may be a recess such as a notch. The mounting portion 31 may be a convex portion that can be fitted into the concave portion. The shapes of the attachment portions 24 and 31 are not limited to the example of FIG. 6 and may be various shapes. The first component 20 and the second component 30 may be positioned so as to be separated from each other by being attached via at least one of the attachment portions 24 and 31. By providing the attachment portion 24 or 31, the positional relationship between the first component 20 and the second component 30 is easily determined. The positional relationship between the first component 20 and the second component 30 may be expressed by the coordinates of the X axis, the Y axis, and the Z axis, or by the rotation angle with the X axis, the Y axis, and the Z axis as rotation axes. May be represented.

  The first component 20 and the second component 30 may be fixed in a predetermined mode. The predetermined mode may include a first mode and a second mode. The first mode represents a state where adjustment of the position of the second component 30 with respect to the first component 20 is facilitated. In the first mode, the second component 30 may be configured not to move relative to the first component 20 when a force less than a first predetermined value is applied. The second mode represents a state in which the first component 20 and the second component 30 are fixed more firmly than in the first mode. In the second mode, the second component 30 may be configured not to move relative to the first component 20 when a force greater than the first predetermined value and less than the second predetermined value is applied.

  In one embodiment, when the power receiving antenna 1 is assembled, the directivity characteristics of the antenna unit 10 as a whole can be adjusted by adjusting the position of the second component 30. The power receiving antenna 1 may be assembled by, for example, an assembling method including the procedure shown in the flowchart of FIG.

  The first component 20 is installed (step S1). The first component 20 may be installed inside the power receiving device 60. When the first component 20 is installed in the power receiving device 60, the power receiving antenna 1 can be assembled while being installed in the power receiving device 60.

  The second component 30 is fixed to the first component 20 in the first mode (step S2).

  The positions of the first component 20 and the second component 30 are adjusted (step S3). The positions of the first component 20 and the second component 30 may be adjusted so that the amount of power received by the power receiving antenna 1 approaches the maximum value. The positions of the first component 20 and the second component 30 may be adjusted so that the power receiving antenna 1 has directivity that can efficiently receive radio waves transmitted from the power transmitting antenna. When the second component 30 is fixed to the first component 20 in the first mode, the positions of the first component 20 and the second component 30 can be easily adjusted. As a result, the amount of power received by the power receiving antenna 1 can be easily adjusted.

  After the positions of the first component 20 and the second component 30 are adjusted, the second component 30 is fixed to the first component 20 in the second mode (step S4). In other words, the second component 30 is fixed to the first component 20 in the second mode with the adjustment of the amount of power received by the power receiving antenna 1 completed. When the second component 30 is fixed to the first component 20 in the second mode, the second component 30 is difficult to move with respect to the first component 20. As a result, the state in which the power reception amount of the power receiving antenna 1 is adjusted is easily maintained. After step S4, the procedure of the flowchart of FIG. 7 ends.

  The power receiving antenna 1 according to one embodiment may not adjust the amount of power received in the first mode. That is, steps S2 and S3 may not be performed, and step S4 may be performed after step S1.

  The power receiving antenna 1 according to the embodiment may be installed inside the power receiving device 60 after being assembled. That is, step S1 may be performed after step S2. In one embodiment, Step S1 may be performed after Step S4.

  The power receiving antenna 1 according to an embodiment may be installed at a location away from the power receiving device 60.

  The power receiving antenna 1 according to an embodiment may be installed outside the power receiving device 60.

  As shown in FIG. 8, in the power receiving antenna 1 according to the embodiment, the antenna unit 10 may further include a third component 70 that can be attached to and detached from at least one of the first component 20 and the second component 30. The directivity characteristics of the antenna unit 10 as a whole may be adjusted by further attaching the third component 70 to the power receiving antenna 1 having the first component 20 and the second component 30. The third component 70 may have a conductor pattern or a dielectric pattern that changes the directivity characteristics of the antenna unit 10 as a whole. The third component 70 may have the same shape as the second component 30 or may have a different shape. The third component 70 may be fixed to the first component 20 or may be fixed to the second component 30. When the antenna unit 10 further includes the third component 70, the directivity characteristic of the antenna unit 10 as a whole is easily adjusted.

  Although the embodiments according to the present disclosure have been described based on the drawings and examples, it should be noted that those skilled in the art can easily make various changes or modifications based on the present disclosure. Accordingly, it should be noted that these variations or modifications are included in the scope of the present disclosure. For example, functions included in each component or step can be rearranged so as not to be logically contradictory, and a plurality of components or steps can be combined into one or divided. It is. Although the embodiment according to the present disclosure has been described centering on an apparatus, the embodiment according to the present disclosure can also be realized as a method including steps executed by each component of the apparatus. The embodiment according to the present disclosure can also be realized as a method, a program, or a storage medium storing a program executed by a processor included in the apparatus. It should be understood that these are included within the scope of the present disclosure.

  In the present disclosure, descriptions such as “first” and “second” are identifiers for distinguishing the configuration. The configurations distinguished by the description of “first” and “second” in the present disclosure can exchange numbers in the configurations. For example, the first component can exchange the identifier “first” and “second” with the second component. The identifier exchange is performed at the same time. The configuration is distinguished even after the identifier is exchanged. The identifier may be deleted. The configuration from which the identifier is deleted is distinguished by a code. Based on only the description of identifiers such as “first” and “second” in the present disclosure, it should not be used as an interpretation of the order of the configuration, or as a basis for the existence of identifiers with smaller numbers.

  In the present disclosure, the X axis, the Y axis, and the Z axis are provided for convenience of description and may be interchanged. The configuration according to the present disclosure has been described using an orthogonal coordinate system configured by the X axis, the Y axis, and the Z axis. The positional relationship between the components according to the present disclosure is not limited to the orthogonal relationship.

DESCRIPTION OF SYMBOLS 1 Power receiving antenna 10 Antenna part 20 1st component 21 Waveguide 22 Waveguide holding | maintenance part 23 Electric power feeding part 24 Attachment part 30 2nd part 31 Attachment part 40 Housing | casing 50 Output part 51 Positive electrode 52 Negative electrode 60 (60a, 60b) Device 70 Third part 100 Power transmission system 300 Power transmission device

Claims (8)

A first component, have a second part detachably attached to the first part, an antenna portion for receiving a radio wave power supply,
An output unit connected to the antenna unit and including a positive electrode and a negative electrode;
A housing for storing the first part and the second part and having a longitudinal direction ;
The antenna unit changes its directivity by attaching and detaching the second component to the first component,
The power receiving antenna, wherein the positive electrode and the negative electrode are respectively located at both ends of the casing in the longitudinal direction .   The first part and the second part are:
  When the amount of power received by the antenna unit is adjusted, it is fixed in the first mode,
  2. The power receiving antenna according to claim 1, wherein the power receiving antenna is fixed in a second mode that is stronger than the first mode in a state where the adjustment of the amount of power received by the antenna unit is completed.   The power receiving antenna according to claim 1 or 2, wherein directivity of the antenna unit is increased by attaching the second component.   The power receiving antenna according to claim 1 or 2, wherein the directivity of the antenna unit is weakened by attaching the second component.   The power receiving antenna according to any one of claims 1 to 4, wherein the first component has an attachment portion to which the second component can be attached. The power receiving antenna according to any one of claims 1 to 5 , wherein the antenna unit further includes a third component that can be attached to and detached from at least one of the first component and the second component. By attaching to and detaching from other parts, change the directivity of the antenna unit that receives radio wave power supply,
Stored together with the other parts in a casing having a longitudinal direction;
An antenna component which is a part of the antenna unit connected to an output unit including a positive electrode and a negative electrode located at both ends in the longitudinal direction of the housing . And combining the first component constituting at least a part of the antenna unit for receiving a radio wave power supply, and a second component to change the directivity of the antenna portion by detachably against said first part,
Adjusting the amount of power received by the antenna unit in a state where the first component and the second component are fixed in the first mode;
And a step of fixing the first component and the second component in a second mode that is stronger than the first mode in a state where the adjustment of the amount of power received by the antenna unit is completed.

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