Wheel-type power receiver

Abstract

The invention relates to a wheel-type power receiver. A tire (80) provided in a wheel-type power receiver (10) is provided with an annular tread portion (80b) that forms a tread (80a), a conductive band (60) is a band-shaped member having conductivity and flexibility and is disposed continuously in the circumferential direction, and each of a plurality of conductors (83) is disposed so as to penetrate the tread portion (80b) and is electrically connected to the conductive band (60).

Description

Technical Field

[0001] The present invention relates to a wheel-type power receiver that receives power from a power supply installed on the road surface. Background Technology

[0002] Japanese Patent Application Publication No. 51-023901 (Patent Document 1) discloses a wheel-type power receiver, which has multiple electrodes (3) with one end embedded in a tire (1), a connecting line (5) that passes through a cavity on the inside of the tire and is electrically connected to the vehicle, and power transmission lines (4a, 4b) that electrically connect one end of the electrodes (3) to the connecting line (5) and form two or more series of current collector circuits.

[0003] Patent Document 1: Japanese Patent Application Publication No. 51-023901

[0004] In Patent Document 1, an elastic tire is used. Therefore, even in the presence of steps or protrusions on the road surface, the tire's contact patch deforms according to these irregularities to maintain a stable grounding state, making it easy and stable to receive electricity. However, in Patent Document 1, multiple power transmission lines forming the current collecting circuit are embedded integrally within the elastic tire. Therefore, in Patent Document 1, if the number of power transmission lines or the diameter of the power transmission lines is increased to increase the amount of electricity that can be received, there is a problem that the multiple power transmission lines hinder the elastic deformation of the tire. Summary of the Invention

[0005] Therefore, it is desirable to realize a wheel-type electric receiver that can easily ensure the elastic deformation of the tire.

[0006] The present invention discloses a wheel-type power receiver that receives power from a power supply body by rolling on the surface of a power supply body disposed along the road surface in a manner extending along the road. The power receiver comprises: a tire made of an elastic material and having an inner chamber therein; a conductive strip disposed in the inner chamber; and a plurality of conductors dispersed along the outer circumferential surface of the tire, i.e., the tread. The tire has an annular tread portion forming the tread. The conductive strip is a conductive and flexible strip-shaped member and is continuously disposed along the circumference of the tire. Each of the plurality of conductors is disposed to penetrate the tread portion and is electrically connected to the conductive strip.

[0007] According to this structure, the multiple conductors distributed along the tire tread are each configured to penetrate the tread area. Therefore, even when the tire is rotating, the exposed portion of any conductor on the tread is in contact with the power supply, enabling it to receive power. Furthermore, each of the multiple conductors is electrically connected to a conductive strip continuously arranged along the circumference of the tire, thus easily improving the reliability of the conductive connection for receiving power from the multiple conductors. Moreover, the conductive strip is a flexible strip-shaped component disposed within the tire's inner chamber, allowing for connection between the multiple conductors and the conductive strip, and easily ensuring the ease of elastic deformation of the tire. Attached Figure Description

[0008] Figure 1 This is a side view of a power supply system having the wheel-shaped power receiver of the first embodiment.

[0009] Figure 2 yes Figure 1 A side view of the power supply system.

[0010] Figure 3 It means Figure 2 A side view of the connecting mechanism in a contact position.

[0011] Figure 4 It means Figure 2 A side view of the connecting mechanism in a retracted position.

[0012] Figure 5 It means Figure 2 A side view of the connecting mechanism in a stowed position.

[0013] Figure 6 It means Figure 2 A cross-sectional view of the connecting mechanism in a contact posture.

[0014] Figure 7 It means Figure 2 A cross-sectional view of the connecting mechanism in a retracted position.

[0015] Figure 8 It means Figure 2 The connecting mechanism is a cross-sectional view of the state during the flip-over.

[0016] Figure 9 It means Figure 2 A cross-sectional view of the connecting mechanism in a stowed position.

[0017] Figure 10 yes Figure 6 Enlarged view of the wheel-shaped power receiver.

[0018] Figure 11 yes Figure 10A cross-sectional view of the wheel-shaped power receiver observed from XI-XI.

[0019] Figure 12 yes Figure 3 A side view of a transmission mechanism in a contact posture, showing the connecting mechanism.

[0020] Figure 13 yes Figure 3 A cross-sectional view of a transmission mechanism in a contact posture, showing the connecting mechanism.

[0021] Figure 14 yes Figure 3 A cross-sectional view of the transmission mechanism in a stowed position.

[0022] Figure 15 This is a side view of a power supply system with a wheel-shaped power receiver according to the second embodiment.

[0023] Figure 16 yes Figure 15 Enlarged view of the wheel-shaped power receiver.

[0024] Figure 17 yes Figure 16 Cross-sectional view of the wheel-shaped power receiver XVII-XVII.

[0025] Figure 18 yes Figure 17 Cross-sectional view of the wheel-shaped power receiver XVIII-XVIII.

[0026] Figure 19 It means in Figure 17 The diagram shows the state of the wheel-shaped power receiver after it has rotated.

[0027] Figure 20 It means in Figure 18 The diagram shows the state of the wheel-shaped power receiver after it has rotated. Detailed Implementation

[0028] [First Implementation]

[0029] Hereinafter, the wheel-shaped power receiver 10 of the first embodiment (hereinafter referred to as power receiver 10) will be described with reference to the accompanying drawings.

[0030] Figure 1 This is a top view of a power supply system 101 equipped with a power receiving device 12. Figure 2This is a side view of a power supply system 101 equipped with a power receiving device 12. A power receiving element 10 is installed on the power receiving device 12. The power receiving device 12 is mounted on a vehicle 11 and receives power from a power supply device 30 while the vehicle 11 is in motion. The power supply device 30 includes a power supply element 32. Here, the longitudinal direction of the vehicle 11 is defined as "vehicle longitudinal direction VX", and the direction orthogonal to the vehicle longitudinal direction VX when viewed vertically is defined as "vehicle width direction VY".

[0031] like Figure 1 as well as Figure 2 As shown, the power receiving device 12 is installed in a power supply system 101 that supplies power to a moving power supply object 103. The power supply system 101 includes: a power supply device 30 that supplies power, a power supply object 103 that receives power from the power supply device 30, and a power receiving body 10. The power receiving body 10 forms a conductive path for supplying power from the power supply device 30 to the power supply object 103.

[0032] The power receiver 10 rolls on the surface 32a of the power supply body 32 to receive power from the power supply body 32. In this embodiment, the surface 32a on which the power receiver 10 rolls is the upper surface of the power supply body 32. The power supply body 32 is provided on the road surface 20a of the road 20 in a manner that extends along the road 20. Here, regarding the shape of the component, "extending along a certain direction" is not limited to a reference direction. It can be a shape in which the extension direction of the component is parallel to the reference direction, or the extension direction of the component as a whole or a part of it can be a direction that intersects the reference direction. It is used as a concept that also includes a shape in which the extension direction of the component as a whole is within a predetermined range (e.g., less than 45 degrees) relative to the reference direction. In the illustrated example, the vehicle's longitudinal direction VX and the direction in which the power supply body 32 extends along the road 20 are the same direction.

[0033] In this embodiment, the power supply device 30 includes a power source 34 and a power supply element 32. The power source 34 includes a battery, a commercial power supply system, a self-contained generator, and other systems capable of supplying power. The power supply element 32 includes rails, cables, and other components that form the path for the flow of current in the power source 34. In this embodiment, the power supply element 32 supplies power to the power source 34 via a wire 36. The power supply element 32 supplies power, for example, to a remote power source 34 via the wire 36, and supplies power to the power receiving device 12 by contacting a power receiving element 10 disposed on the power receiving device 12.

[0034] In this embodiment, the power supply unit 32 is disposed on the surface 20a of the road 20, extending along the road 20. The road 20 includes the path through which the power supply object 103 passes. Figure 1 as well as Figure 2In the example shown, the power supply unit 32 is buried in the road 20. Furthermore, in Figure 1 as well as Figure 2 In the example shown, the insulator 38, used to insulate the road 20 and the power supply body 32, is buried in the road 20 together with the power supply body 32. In the illustrated example, a plate-shaped power supply body 32 and an insulator 38 insulating the power supply body 32 and the road 20 are provided in a groove 24 excavated in the road surface 20a extending along the vehicle's longitudinal direction VX. In this embodiment, the surface 32a of the power supply body 32 in contact with the power receiving body 10 and the road surface 20a are at the same height.

[0035] In this embodiment, in order to obtain the positional relationship between the vehicle 11 and the power supply unit 32 in the vehicle width direction VY, a power supply unit detection device 18 for detecting the power supply unit 32 is provided in the vehicle 11. The power supply unit detection device 18 can be a camera that captures a shooting range E1 including the road surface 20a, or it can be a dedicated sensor for detecting the power supply unit 32. When the power supply unit detection device 18 is a camera, the power supply unit 32 is detected, for example, by image recognition, based on the captured image including the road surface 20a. In the illustrated example, the power supply unit detection device 18 is a front-facing camera that captures a shooting range E1 including the road surface 20a in front of the vehicle in the forward-rear direction VX, but it can also be a rear-facing camera that captures a shooting range including the road surface 20a behind the vehicle in the forward-rear direction VX. The vehicle 11 on which the power supply and receiving device 12 is mounted is not particularly limited, but it is, for example, an electric vehicle that uses a rotary motor as a driving source. The rotary motor supplies power from the power receiving device 12 to rotate the wheels 16.

[0036] like Figure 2 As shown, a vehicle-side power receiving terminal 45 is provided on the vehicle 11. Power supplied to the power receiving device 12 is supplied to electronic devices (e.g., driving drive, battery, vehicle 11 control devices, etc.) provided on the vehicle 11 via the vehicle-side power receiving terminal 45. In this embodiment, the mounting part 41 is fixed to the vehicle body 14 of the vehicle 11. Examples of the vehicle body 14 include a unibody chassis, a ladder frame chassis, etc.

[0037] like Figure 1 As shown, the power receiving device 12 includes a base component 42 mounted on the vehicle 11. The base component 42 is mounted on the lower surface 11b of the vehicle 11. In this embodiment, the base component 42 is mounted on the vehicle 11 via a mounting portion 41. The mounting portion 41 is a component extending in the vehicle width direction VY. The base component 42 is a component extending in the vehicle longitudinal direction VX. Alternatively, the base component 42 may be mounted on the vehicle 11 without using the mounting portion 41.

[0038] The power receiving device 12 includes a power receiving body 10 that contacts and receives power from the power supply body 32. The power receiving device 12 includes a connecting mechanism 43 that connects the base component 42 and the power receiving body 10. Figure 3 This is a side view showing the connecting mechanism 43 in the contact posture P1. Figure 4 This is a side view showing the connecting mechanism 43 in the retracted posture P2. Figure 5 This is a side view showing the connecting mechanism 43 in the stowed position P3. Figure 6 yes Figure 3 Sectional view under VI-VI observation. Figure 7 yes Figure 4 Sectional view under observation VII-VII. Figure 8 This is a cross-sectional view showing the flipped state of the connecting mechanism 43. Figure 9 yes Figure 5 A cross-sectional view under IX-IX observation.

[0039] The connecting mechanism 43, via the drive mechanism 70 described later, changes its posture between a contact posture P1, in which the power receiver 10 contacts the power supply 32, and a storage posture P3, in which the power receiver 10 separates from the power supply 32. The connecting mechanism 43 includes a connecting member 51 that connects the base member 42 and the support arm 52. The connecting member 51 is connected to the base member 42 in a manner that allows it to swing about a tilting axis A3, which, when viewed vertically, runs in a direction intersecting the swinging axis A1 of the contact posture P1.

[0040] The connecting mechanism 43 includes a support arm 52 for supporting the power receiving body 10. The connecting mechanism 43 is configured such that the power receiving body 10 is suspended by the support arm 52 in the contact posture P1. In this embodiment, the support arm 52 is a rectangular strip-shaped component, but it can also be a component with other flat shapes such as an elliptical cross-section. The support arm 52 can also be a hollow component. Here, the hollow component further includes components that allow two or more strip-shaped components to overlap by spacing. Here, the direction in which the support arm 52 extends is defined as the "extension direction D", the direction along the swing axis A1 is defined as the "first width direction Y", and the direction orthogonal to both the extension direction D and the first width direction Y is defined as the "thickness direction X".

[0041] In this embodiment, the support arm 52 is connected to the connecting member 51 in a manner that allows it to swing about the swing axis A1. For example... Figure 3As shown, in the contact posture P1, the extension direction D of the support arm 52 is inclined downwards towards the Z2 and rearwards in the vehicle's longitudinal direction VX, moving from the swing axis A1 towards the power receiver 10. In the contact posture P1, the swing axis A1 is positioned along the vehicle width direction VY. In the contact posture P1, the first width direction Y is along the vehicle width direction VY. In this embodiment, in the contact posture P1, the first width direction Y is parallel to the vehicle width direction VY. In the storage posture P3, the first width direction Y is along the vertical direction Z. Figure 5 In the example shown, in the contact posture P1, the first width direction Y is parallel to the vertical direction Z.

[0042] The connecting mechanism 43 is configured such that, in the contact posture P1, the first width direction Y of the support arm 52 is horizontal, and in the storage posture P3, the first width direction Y of the support arm 52 is vertically aligned with the Z direction, the support arm 52 is flipped about a flipping axis A3. This flipping axis A3, when viewed vertically, is aligned with the swing axis A1 of the contact posture P1. Furthermore, the first width direction Y of the contact posture P1 is not limited to being parallel to the horizontal direction; it can also be tilted relative to this parallel direction. Similarly, the first width direction Y of the storage posture P3 is not limited to being parallel to the vertical Z direction; it can also be tilted relative to this parallel direction.

[0043] In this embodiment, the axial direction of the tilting axis A3 is along the vehicle's longitudinal direction VX, but it can also be along the vehicle's width direction VY. In this embodiment, the axial direction of the tilting axis A3 is horizontal, but it can also be tilted relative to the horizontal direction. In this embodiment, the axial direction of the tilting axis A3 is orthogonal to the swing axis A1 when viewed vertically, but it can also be non-orthogonal as long as it intersects the swing axis A1. The tilting of the support arm 52 can be the tilting of the connecting member 51 relative to the base member 42, or it can be the bending and swinging of the support arm 52 around the tilting axis A3.

[0044] The receiving device 12 includes a drive mechanism 70, which causes the connecting mechanism 43 to change its posture between a contact posture P1 in which the receiving body 10 contacts the power supply body 32, and a storage posture P3 in which the receiving body 10 separates from the power supply body 32. The drive mechanism 70 is configured to perform a lateral movement in which the connecting member 51 and the support arm 52 swing about the lateral axis A3, such that in the contact posture P1 the receiving body 10 is suspended by the support arm 52 and becomes the swing axis A1 of the support arm 52 in the horizontal direction (first posture Pb1), and in the storage posture P3 the swing axis A1 of the support arm 52 is in the vertical direction Z (third posture Pb3).

[0045] In this embodiment, when the drive mechanism 70 changes the connecting mechanism 43 from the storage posture P3 posture to the contact posture P1, after the connecting member 51 is swung around the lateral axis A3 and the first width direction Y of the support arm 52 is in the horizontal direction, the support arm 52 is swung around the swing axis A1 to lower the power receiving body 10.

[0046] In this embodiment, when the drive mechanism 70 changes the connecting mechanism 43 from the contact posture P1 posture to the storage posture P3, after the support arm 52 swings around the swing axis A1 to raise the power receiving body 10, the drive mechanism 70 sets the support arm 52 to a posture where the first width direction Y of the support arm 52 is along the vertical direction Z by swinging the connecting mechanism 43 around the horizontal tilting axis A3. Figure 4 as well as Figure 7 The diagram shows the state of the connecting mechanism 43 in a retracted posture P2, that is, after the support arm 52 swings about the swing axis A1 and the electric receiving body 10 rises, the support arm 52 is in a posture where the first width direction Y of the support arm 52 is horizontal.

[0047] In this embodiment, the drive mechanism 70 is configured to allow the support arm 52 to swing about the swing axis A1 relative to the connecting member 51 in the contact posture P1, and to restrict the swing of the connecting member 51 about the lateral tilt axis A3 relative to the base member 42 in both the contact posture P1 and the storage posture P3.

[0048] The drive mechanism 70 includes a drive unit 71 (see reference). Figure 2 The transmission mechanism 74 transmits the driving force of the drive device 71 to the connecting member 51 and the support arm 52. The transmission mechanism 74 performs a lowering action, causing the support arm 52 to swing around the swing axis A1 due to the driving force of the drive device 71, thereby lowering the power-receiving body 10. The transmission mechanism 74 also performs a raising action, causing the support arm 52 to swing around the swing axis A1 due to the driving force of the drive device 71, thereby raising the power-receiving body 10. Examples of the drive device 71 include a rotary motor, an air pressure pump, a hydraulic pump, and an electromagnetic actuator.

[0049] In this embodiment, the transmission mechanism 74 executes a lateral tilting action by means of the driving force of the drive device 71, causing the connecting member 51 and the support arm 52 to swing about the tilting axis A3 in a manner that changes from the third posture Pb3 to the first posture Pb1.

[0050] In this embodiment, the transmission mechanism 74 is configured to perform the following actions in sequence by the operation of the drive device 71: a locking release action that releases the restriction on the swing of the connecting member 51 about the swivel axis A3 from the storage posture P3 state; a swivel action that, after the locking release action, causes the connecting member 51 and the support arm 52 to swing about the swivel axis A3 in a manner that changes from the third posture Pb3 to the first posture Pb1; a locking action that, after the swivel action, sets the state to restrict the swing of the connecting member 51 about the swivel axis A3; and a descent action that, after the locking action, causes the support arm 52 to swing about the swing axis A1 and causes the power receiving body 10 to descend.

[0051] In this embodiment, the transmission mechanism 74 is configured to perform the following actions sequentially by the operation of the drive device 71: a rising action that causes the support arm 52 to swing around the swing axis A1 from the contact posture P1 state, thereby raising the power receiving body 10; a locking release action that releases the restriction on the swing of the connecting member 51 around the lateral tilting axis A3 after the rising action is completed; a lateral tilting action that causes the connecting member 51 and the support arm 52 to swing around the lateral tilting axis A3 in a manner that changes from the first posture Pb1 to the third posture Pb3 after the locking release action is completed; and a locking action that sets the state to restrict the swing of the connecting member 51 around the lateral tilting axis A3 after the lateral tilting action is completed.

[0052] In this embodiment, the transmission mechanism 74 includes a transmission member 75 that moves in a specific transmission direction B by the driving force of the drive device 71. Figure 3 In the example shown, the transmission mechanism 74 includes a pulley 76. Examples of transmission components 75 include threads, cables, chains, gears, etc.

[0053] In the illustrated example, the transmission mechanism 74 is configured to be connected to the base member 42 or fixed to the inner side of the cylindrical member 79 of the connecting member 51. The transmission member 75 is fixed at one end to the vehicle body 14, mounting portion 41, or base member 42, and the other end is pulled by the drive device 71, causing the support arm 52 to swing about the swing axis A1, thereby raising the power receiver 10. The connecting mechanism 43 includes a first elastic member 55 (see reference 51) that applies force to the support arm 52 relative to the connecting member 51. Figure 3 The first elastic member 55 applies force to the support arm 52 relative to the connecting member 51 in the direction in which the power receiving body 10 descends and contacts the power supply body 32. Examples of the first elastic member 55 include coil springs, torsion springs, and leaf springs.

[0054] The power supplied from the power supply unit 32 to the power receiving unit 10 is transmitted to the vehicle-side power receiving terminal 45 (see reference) via a transmission line not shown. Figure 2 )delivery. Figure 10 yes Figure 6Enlarged view of the power receiver 10. Figure 11 yes Figure 10 The cross-sectional view of the charge receiver 10 as seen from XI-XI. The charge receiver 10 has a tire 80 made of an elastic material. Examples of elastic materials used for the tire 80 include thermosetting elastomers such as natural rubber and synthetic rubber, thermoplastic elastomers, non-conductive elastomers, and conductive elastomers.

[0055] The tire 80 has an annular tread portion 80b that forms the outer peripheral surface of the tire 80, i.e., the tread 80a. The tire 80 has an inner chamber 80e inside. Examples of the shape of the tread portion 80b include a rounded rectangle, an ellipse, a perfect circle or other arc shape, a cylindrical shape, an annular shape, etc.

[0056] The power receiving body 10 is configured to rotate about a rotation axis A2. In this embodiment, the power receiving body 10 is supported by a shaft portion 81 provided in the power receiving device 12 so that it can rotate about the rotation axis A2. The shaft portion 81 is fixed to the support arm 52, and the power receiving body 10 is supported by a bearing (not shown) so that it can rotate about the rotation axis A2. Figure 3 In the example shown, the receiving body 10 has a wheel 82 with a tire 80 fixed to it, and the wheel 82 is supported by the axle 81 via the aforementioned bearing. Here, the direction along the rotation axis A2 is designated as the "second width direction". In this embodiment, the second width direction of the contact posture P1 is a direction orthogonal to the vehicle's front-rear direction VX, and the second width direction of the storage posture P3 is along the vertical direction Z. In the illustrated example, the second width direction is parallel to the first width direction Y. Therefore, like the first width direction, the second width direction is indicated by Y.

[0057] The receiving body 10 has a plurality of conductors 83 distributed along the outer peripheral surface of the tire 80, i.e., the tread 80a. Each of the plurality of conductors 83 is arranged to penetrate the tread portion 80b. The plurality of conductors 83 are distributed not only along the circumference of the tread 80a but also along the second width direction Y. Examples of conductors 83 include conductive studs, conductive pins, bolts, conductive wires, and conductive filaments.

[0058] The receiving body 10 includes a conductive strip 60 disposed in the inner chamber 80e. The conductive strip 60 is a strip-shaped component that is both conductive and flexible. In this embodiment, the conductive strip 60 is a braided fabric or a woven fabric using conductive threads or filaments. The conductive strip 60 is constructed, for example, by cross-weaving.

[0059] Here, the direction orthogonal to the rotation axis A2 of the tire 80 is defined as "radial R". Within "radial R", the side closest to the rotation axis A2 of the tire 80 is defined as "inner radial side". The side furthest from the rotation axis A2 of the tire 80 is defined as "outer radial side". The circumferential direction of the tire 80 is defined as "circumferential direction".

[0060] The conductive strip 60 is continuously arranged circumferentially. In this embodiment, the conductive strip 60 is continuously arranged circumferentially along the inner circumferential surface 80f of the tread portion 80b. In this embodiment, the conductive strip 60 is continuously arranged throughout the entire circumference. Alternatively, the conductive strip 60 may be broken at one location or at multiple locations. In this embodiment, although the conductive strip 60 is arranged radially inside the inner circumferential surface 80f of the tread portion 80b, it may also be arranged to contact the inner circumferential surface 80f of the tread portion 80b. The conductive strip 60 rotates integrally with the tire 80.

[0061] Each of the plurality of conductors 83 is electrically connected to the conductive strip 60. In this embodiment, the dimension L1 of the conductive strip 60 in the second width direction Y is set to overlap with the plurality of conductors 83 dispersed along the second width direction Y when viewed radially. The dimension L2 of the tire 80 in the second width direction Y is smaller than the outer diameter of the tire 80. Thus, in the storage posture P3, the second width direction Y of the tire 80 becomes the direction along the vertical direction Z, so it is easy to reduce the vertical direction Z dimension of the power receiver 10 in the storage posture P3. In this embodiment, at least in the third posture Pb3, the dimension L8 of the support arm 52 in the first width direction Y (refer to...) Figure 10 It is smaller than the outer diameter of the tire 80. In this embodiment, at least in the third posture Pb3, the dimension L9 of the first width direction Y of the connecting member 51 (refer to...) Figure 9 It is smaller than the outer diameter of a tire of size 80. Figure 11 In the example shown, the dimension of the second width direction Y of the shaft portion 81 is smaller than the outer diameter of the tire 80.

[0062] In this embodiment, at least in the third posture Pb3, the dimension L7 of the support arm 52 in the thickness direction X (refer to...) Figure 4 The dimension L8 of the first width direction Y of the support arm 52 (refer to) Figure 10 Large. In this embodiment, at least in the third posture Pb3, the dimension L7 of the support arm 52 in the thickness direction X (refer to...) Figure 4 The dimension L9 of the first width direction Y of the connecting component 51 (refer to) Figure 9 In this way, in the storage posture P3, the first width direction Y becomes the direction along the vertical direction Z, so the vertical dimension Z of the power receiving device 12 in the storage posture P3 can be reduced to a smaller size, and the strength of the support arm 52 can be increased.

[0063] The power receiving unit 10 has a rotating terminal 86a disposed radially inside the conductive strip 60 and rotating integrally with the tire 80. The rotating terminal 86a is electrically connected to a fixed terminal 86b of the power receiving device 12. The fixed terminal 86b receives power from the rotating terminal 86a and transmits it to the vehicle-side power receiving terminal 45 (see reference 10) via a transmission line (not shown). Figure 2 Power transmission. In the illustrated example, the fixed terminal 86b is fixed to the support arm 52. Examples of rotating terminals 86a include components on the rotating side of a slip ring and components on the rotating side of a rotary connector. Examples of fixed terminals 86b include components on the fixed side of a slip ring and components on the fixed side of a rotary connector.

[0064] The power receiver 10 includes conductive wires 85 that electrically connect the conductive strip 60 to the rotating terminal 86a. In this embodiment, the conductive strip 60 and the rotating terminal 86a are connected by N conductive wires 85 (N is an integer greater than or equal to 1). In this embodiment, the conductive strip 60 is configured to electrically connect all of the N conductive wires 85 to each other. In this embodiment, the total cross-sectional area of ​​the N conductive wires 85 is set according to the magnitude of the current received from the power supply 32. For example, the total cross-sectional area of ​​the N conductive wires 85 is set to an area corresponding to a current that is more than 1, 1.2, or 1.5 times the required current. For example, the total cross-sectional area of ​​the N conductive wires 85 is set to an area corresponding to a current that is less than 1.5, 2, or 3 times the required current.

[0065] The number of conductive wires 85 electrically connected to the conductive strip 60 is less than one-half, one-third, or one-quarter of the number of conductive bodies 83 electrically connected to the conductive strip 60. The number of conductive wires 85 is 32 or less, 24 or less, 16 or less, 8 or less, or 4 or less. The number of conductive wires 85 is 2 or more, 3 or more, or 4 or more. Furthermore, the number of conductive wires 85 can be the same as the number of conductive bodies 83. Examples of conductive wires 85 include conductive filaments, conductive threads, conductive braids, and conductive fabrics.

[0066] like Figure 11 As shown, the conductor 83 is provided through a through hole in the tread portion 80b in a manner that allows it to move radially R relative to the tread portion 80b. This makes it easier to suppress noise and wear caused by contact with the power supply 32.

[0067] The conductor 83 has a columnar portion 83b. The conductor 83 also has a locking portion 83c. The inner end of the conductor 83 in the radial direction R has a portion larger than the diameter of the through hole. This end corresponds to the locking portion 83c. Because the conductor 83 has the locking portion 83c, the conductor 83 can be prevented from detaching from the tire 80. In the illustrated example, although the locking portion 83c of the conductor 83 has a head with an outer diameter larger than the diameter of the through hole, the locking portion 83c can also be T-shaped or L-shaped.

[0068] The locking portion 83c of the conductor 83 is disposed between the conductive strip 60 and the inner peripheral surface 80f of the tread portion 80b. The conductive strip 60 contacts the conductor 83 in a manner that presses the conductor 83 outward in a radial direction R. In this embodiment, a pressing member 89 is provided that presses the conductive strip 60 inward in a radial direction R of the conductive strip 60 in contact with the conductor 83. The pressing member 89 rotates integrally with the tire 80. The pressing member 89 is disposed in the inner chamber 80e. In this embodiment, the conductive strip 60 and the pressing member 89 are not fixed. The contact between the conductive strip 60 and the locking portion 83c is not fixed.

[0069] In this embodiment, the locking portion 83c of the conductor 83 and the conductive strip 60 are maintained in a state where they can move away radially R and are in contact by the pressing of the pressing member 89. Alternatively, the pressing member 89 may be omitted, and the conductor 83 and the conductive strip 60 may be fixed by electrical connection through fastening, welding, or spraying. Examples of the pressing member 89 include flexible containers containing gels, liquids, or gases, flexible porous materials, non-conductive elastomers, conductive elastomers, and coil springs.

[0070] Figure 12 This is a side view of the cam mechanism 90 with the connecting mechanism 43 in the contact posture P1. Figure 13 This is a cross-sectional view of the cam mechanism 90 with the connecting mechanism 43 in the contact posture P1. Figure 14 This is a cross-sectional view of the cam mechanism 90 with the connecting mechanism 43 in the retracted position P3. The transmission mechanism 74 has a cam mechanism 90 that converts the movement of the transmission member 75 into the movement of the connecting member 51 and the support arm 52. Examples of cam mechanisms 90 include three-dimensional cam mechanisms such as cylindrical cams and planar cam mechanisms such as plate cams.

[0071] In this embodiment, the cam mechanism 90 includes a first cam member 95 and a second cam member 96. The first cam member 95 is connected to the connecting member 51 in a manner that allows it to oscillate about the tilting axis A3. The first cam member 95 is connected to the connecting member 51 in a manner that allows it to move axially along the tilting axis A3. The first cam member 95 is connected to the second cam member 96 in a manner that allows it to oscillate about the tilting axis A3. The second cam member 96 is fixed to the base member 42. Figure 13 In the example shown, a groove 94a extending axially along the tilting axis A3 is formed on the inner peripheral surface of the first cam member 95, and a protrusion 94b that engages with the groove 94a is formed on the outer peripheral surface of the connecting member 51. Thus, the first cam member 95 is connected to the connecting member 51 in a manner that prevents it from oscillating around the tilting axis A3 but allows it to move axially along the tilting axis A3.

[0072] In this embodiment, the cam mechanism 90 includes a second elastic member 97 that stores the driving force of the drive device 71. The second elastic member 97 applies a force to the first cam member 95 relative to the second cam member 96. Examples of the second elastic member 97 include a coil spring, a torsion spring, and a leaf spring. Furthermore, in... Figure 12 as well as Figure 13 The figure shows an unfolded view of the first cam component 95.

[0073] The transmission component 75 is configured to actuate the cam mechanism 90 by moving in a predetermined first actuation region toward one side of the transmission direction B, i.e., the first side B1 of the transmission direction. The transmission component 75 is configured to move in a second actuation region, which is closer to the first side B1 of the transmission direction than the first actuation region, toward the first side B1 of the transmission direction, causing the support arm 52 to swing around the swing axis A1, thereby causing the power receiver 10 to descend.

[0074] The transmission component 75 is configured to actuate the cam mechanism 90 by moving from a predetermined first actuation region to the other side of the transmission direction B, i.e., the second side B2 of the transmission direction. The transmission component 75 is configured to move from a second actuation region, which is closer to the first side B1 of the transmission direction than the first actuation region, to the second side B2 of the transmission direction, causing the support arm 52 to swing around the swing axis A1, thereby raising the power receiver 10.

[0075] In this embodiment, the cam mechanism 90 is actuated by engaging the cam contact portion 75a, which is fixed to the transmission member 75, with the first cam member 95. The first actuation region is the region where the cam contact portion 75a engages with the first cam member 95. The second actuation region is the region where the cam contact portion 75a does not engage with the first cam member 95.

[0076] Here, one side of the cam action direction of the cam mechanism 90 is designated as the first cam action direction side C1, and the other side is designated as the second cam action direction side C2. Examples of cam action directions include the rotational motion of a cylindrical cam, the rotational motion of a plate cam, and the linear motion of a plate cam. In the illustrated example, the cam action direction is the oscillating motion of the first cam member 95 relative to the second cam member 96 about the lateral tilting axis A3.

[0077] The cam mechanism 90 is configured to move in the first side of the cam movement direction C1 according to the movement of the transmission member 75 in the first movement area in the first movement region in the first direction of transmission direction B1. The cam mechanism 90 is configured to move in the second side of the cam movement direction C2 according to the movement of the transmission member 75 in the first movement region in the second side of transmission direction B2.

[0078] The cam mechanism 90 has a first cam region 91, a second cam region 92, and a third cam region 93 with different cam profiles. The second cam region 92 is located on the first side C1 of the cam movement direction, which is closer to the first cam region 91. The third cam region 93 is located on the first side C1 of the cam movement direction, which is closer to the second cam region 92.

[0079] The first cam region 91 is configured to limit the swing of the connecting member 51 around the tilting axis A3 and maintain the connecting member 51 in the third posture Pb3. The second cam region 92 is configured to cause the connecting member 51 to swing around the tilting axis A3 from the third posture Pb3 to the first posture Pb1 according to the movement of the cam mechanism 90 to the first side C1 in the cam movement direction. The second cam region 92 is configured to cause the connecting member 51 to swing around the tilting axis A3 from the first posture Pb1 to the third posture Pb3 according to the movement of the cam mechanism 90 to the second side C2 in the cam movement direction. The third cam region 93 is configured to limit the swing of the connecting member 51 around the tilting axis A3 and maintain the connecting member 51 in the first posture Pb1.

[0080] return Figure 1 as well as Figure 2 The power receiving device 12 includes a plurality of power receiving bodies 10 (three in the illustrated example). The power receiving device 12 also includes a plurality of connecting mechanisms 43 (three in the illustrated example). In this embodiment, the plurality of power receiving bodies 10 are arranged separately along the vehicle's longitudinal direction VX. Alternatively, the plurality of power receiving bodies 10 may also be arranged separately along both the vehicle's longitudinal direction VX and the vehicle's width direction VY.

[0081] The drive mechanism 70 is configured to change the posture of multiple connecting mechanisms 43 to a contact posture P1 and a storage posture P3 via a drive device 71. In this embodiment, the drive device 71 and the transmission component 75 are jointly provided through multiple connecting mechanisms 43, and the cam mechanism 90 is provided corresponding to each of the multiple connecting mechanisms 43. Preferably, the drive device 71 is a drive source.

[0082] The power receiving device 12 includes a moving mechanism 99 that moves the connecting mechanism 43 and the power receiving body 10 relative to the vehicle 11 in the vehicle width direction VY. In this embodiment, the moving mechanism 99 moves the base member 42 relative to the mounting portion 41 in the vehicle width direction VY. Alternatively, the moving mechanism 99 may be a component that moves the connecting mechanism 43 and the power receiving body 10 in the vehicle width direction VY and the vehicle longitudinal direction VX, that is, moves them obliquely relative to the vehicle width direction VY. Examples of the moving mechanism 99 include mechanisms using worm gears, belts, etc.

[0083] In this embodiment, when the connecting mechanism 43 is in the retracted position P3, the connecting mechanism 43 and the power receiver 10, viewed vertically, are positioned within the area overlapping with the vehicle body 14 in the vehicle width direction VY. When the connecting mechanism 43 is in the retracted position P3, the connecting mechanism 43 and the power receiver 10, viewed vertically, are positioned within the area overlapping with the vehicle body 14 in the vehicle front-rear direction VX. Furthermore, the connecting mechanism 43 may also be configured such that, when in the retracted position P3, its lower end is positioned Z1 above the lower end of the vehicle body 14. It may also be configured such that, when the connecting mechanism 43 is in the retracted position P3, the lower end of the power receiver 10 is positioned Z1 above the lower end of the vehicle body 14. When the connecting mechanism 43 is in the retracted position P3, the connecting mechanism 43 and the power receiver 10 are, for example, positioned between the vehicle 11's battery and the road surface 20a.

[0084] As described above, the power receiving body 10 of this embodiment includes: a tire 80 made of an elastic material and having an inner chamber 80e therein; a conductive strip 60 disposed in the inner chamber 80e; a plurality of conductors 83 dispersed along the outer peripheral surface of the tire 80, i.e., the tread 80a; a rotating terminal 86a disposed on the inner side of the conductive strip 60 in the radial direction and rotating integrally with the tire 80; and a conductive wire 85 electrically connecting the conductive strip 60 and the rotating terminal 86a. The tire 80 has an annular tread portion 80b forming the tread 80a. The conductive strip 60 is a strip-shaped member that is conductive and flexible and is continuously disposed in the circumferential direction along the inner peripheral surface 80f of the tread portion 80b. Each of the plurality of conductors 83 is disposed through the tread portion 80b and electrically connected to the conductive strip 60.

[0085] According to the above-described power receiver 10, each of the plurality of conductors 83 distributed along the tread 80a of the tire 80 is arranged to penetrate the tread portion 80b. Therefore, even when the tire 80 is rotating, the exposed portion of the tread 80a of any conductor 83 can contact the power supply 32 and receive power from the power supply 32. Each of the plurality of conductors 83 is electrically connected to the conductive strip 60, which is connected to the rotating terminal 86a via a conductive wire 85. Therefore, compared to the case where each of the plurality of conductors 83 is connected to the rotating terminal 86a via the conductive wire 85, it is easier to reduce the number of conductive wires 85. Thus, it is easier to ensure the elastic deformation of the tire 80. In addition, it is easier to achieve a lightweight design of the power receiver 10. Moreover, the conductive strip 60 is a flexible strip-shaped component and is disposed in the inner chamber 80e of the tire 80, so it is possible to connect the plurality of conductors 83 to the conductive strip 60 and to ensure the elastic deformation of the tire 80.

[0086] In the power receiver 10 of this embodiment, the conductive strip 60 is a braided fabric or a woven fabric using conductive wires or conductive filaments.

[0087] Based on the aforementioned charge receiver 10, the conductivity and flexibility of the conductive strip 60 can be easily and effectively ensured.

[0088] In the current receiver 10 of this embodiment, a plurality of conductors 83 are distributed not only along the circumference of the tread 80a but also along the width direction (second width direction Y) of the tread 80a. The dimension L1 of the width direction (second width direction Y) of the conductive strip 60 is set to overlap with the entirety of the plurality of conductors 83 distributed along the width direction (second width direction Y) when viewed radially.

[0089] According to the aforementioned charge receiver 10, the plurality of conductors 83 are distributed not only along the circumferential direction of the tread 80a but also along the width direction of the tread 80a, thus easily ensuring a large amount of charge received by the plurality of conductors 83. Moreover, according to this structure, the dimension L1 of the width direction (second width direction Y) of the conductive strip 60 is set to overlap with the entirety of the plurality of conductors 83 distributed along the width direction (second width direction Y) when viewed radially, thus enabling easy connection of all conductors 83 to the conductive strip 60.

[0090] In the power receiving body 10 of this embodiment, the conductive strip 60 and the rotating terminal 86a are connected by N (N is an integer greater than or equal to 1) conductive wires 85. The conductive strip 60 is configured to electrically connect all of the N conductive wires 85 to each other, and the total cross-sectional area of ​​the N conductive wires 85 is set according to the magnitude of the current received from the power supply body 32.

[0091] The current receiver 10 is configured such that the required current can flow through all N conductive lines 85 interconnected by the conductive strip 60, thus making it easy to minimize the cross-sectional area of ​​the conductive lines 85. Therefore, it is easy to ensure the ease of elastic deformation of the tire 80 and to achieve a lightweight design for the current receiver 10.

[0092] [Second Implementation]

[0093] Hereinafter, the power receiving body 10 of the second embodiment will be described with reference to the accompanying drawings. The description will focus on the differences from the first embodiment. Otherwise, the points not specifically described are the same as in the first embodiment.

[0094] like Figure 15 as well as Figure 16 As shown, the power receiving body 10 is installed in a power supply system 101 that supplies power to the moving power supply object 103.

[0095] The power supply system 101 includes: a power supply device 30 for supplying power, a power supply object 103 for receiving power from the power supply device 30, and a power receiving body 10. The power receiving body 10 forms a conductive path for supplying power from the power supply device 30 to the power supply object 103.

[0096] In this embodiment, the power supply device 30 includes a power source 34 and a power supply element 32. The power source 34 includes a battery, a commercial power supply system, a self-contained generator, and other systems capable of supplying power. The power supply element 32 includes rails, cables, and other components that form a path for the flow of current in the power source 34. In this embodiment, the power supply element 32 is connected to the power source 34 via a wire 36 to supply power.

[0097] In this embodiment, the power supply unit 32 is disposed on the surface 20a of the road 20, extending along the road 20. The road 20 includes the path through which the power supply object 103 passes. Figure 15 as well as Figure 16 In the example shown, the power supply unit 32 is buried in the road 20, and the surface 32a of the power supply unit 32 and the road surface 20a are at the same height. Furthermore, in Figure 15 as well as Figure 16 In the example shown, the insulator 38, which is used to insulate the road 20 and the power supply 32, is buried in the road 20 together with the power supply 32.

[0098] The power supply device 103 receives power from the power supply unit 32 and moves along the road 20. In this embodiment, the power supply device 103 is an electrical or electronic device mounted on the vehicle 11 traveling on the road 20. Examples of such electrical or electronic devices include a driving engine, a battery, and control devices for the vehicle 11. Figure 15In the example shown, the power supply object 103 moves along the road 20 at a position higher than the road surface 20a.

[0099] In this embodiment, the power receiving body 10 forms a conductive path from the power source 34 to the power supply object 103 by contacting the power supply body 32. The power receiving body 10 moves together with the power supply object 103. Therefore, the power supply system 101 also includes a connection mechanism 105 for connecting the power receiving body 10 and the power supply object 103.

[0100] The connection mechanism 105 forms part of a conductive path from the power supply device 30 to the power supply object 103 and retains the power receiving body 10. Figure 15 as well as Figure 16 The illustrated connection mechanism 105 is mounted on the lower surface 11b of the vehicle 11. In this embodiment, the connection mechanism 105 electrically connects the power supply object 103 and the power receiver 10, and holds the power receiver 10 in a rotatable position. Figure 16 As shown, in this embodiment, the connection mechanism 105 is positioned to contact the power receiver 10 with the power supply unit 32 when a conductive path is formed from the power supply device 30 to the power supply target 103. On the other hand, although not shown, in this embodiment, the connection mechanism 105 is positioned to separate the power receiver 10 from the power supply unit 32 when the power supply target 103 is not receiving power from the power supply device 30.

[0101] Reference Figures 16-18 The structure of the power receiving body 10 in this embodiment will be described. Figure 17 as well as Figure 18 The diagram shows a power receiver 10 in contact with a power supply 32 in a stationary state.

[0102] The power receiver 10 rolls on the surface 32a of the power supply body 32 and receives power from the power supply body 32. In this embodiment, the surface 32a on which the power receiver 10 rolls is the upper surface of the power supply body 32.

[0103] Figures 17-18 As shown, the power receiving body 10 includes a tire 80 that rolls on the surface 32a of the power supply body 32, a conductive strip 60, a plurality of conductors 83, a limiting member 440, and a wheel 82. The conductive strip 60 is movably disposed inside the tire 80 and is electrically connected to the connecting mechanism 105. The conductors 83 are movable in a direction approaching the conductive strip 60 and in a direction away from the conductive strip 60, and are electrically connected to both the power supply body 32 and the conductive strip 60. The limiting member 440 restricts the movement of the conductive strip 60 and the conductors 83. The wheel 82 supports the tire 80 so that it can rotate relative to the power supply object 103. In this embodiment, the power receiving body 10 also includes a filling member 146 inside the tire 80.

[0104] The current receiver 10 will now be described with reference to each direction of the tire 80. The direction orthogonal to the radial direction R is designated as the "third width direction". Within the "third width direction", the side closest to the tire 80 is designated as the "inner side of the third width direction". In the illustrated example, the third width direction is parallel to the second width direction. Therefore, like the second width direction, the third width direction is indicated by Y.

[0105] Viewed from the outside, the tire 80 includes a tread portion 80b and a sidewall portion 80c. The tread portion 80b is annular and forms the outer peripheral surface of the tire 80, i.e., the tread 80a. In this embodiment, the tread portion 80b is cylindrical. The sidewall portion 80c extends from both ends of the tread portion 80b in the third width direction Y toward the inner side in the radial direction R, forming the side of the tire 80. In this embodiment, the tire 80 also includes an inner diameter wall portion 80d. Figure 17 The inner diameter wall portion 80d, as exemplified, extends from the inner end of the radial R of the side wall portion 80c toward the inner side in the third width direction Y.

[0106] An inner chamber 80e is formed inside the tire 80. A conductive strip 60 and a portion of a limiting member 440 are disposed in the inner chamber 80e. In this embodiment, the inner chamber 80e is a space enclosed by the tread portion 80b and the sidewall portion 80c. Furthermore, in this embodiment, the inner chamber 80e is covered from the inside of the radial direction by an inner diameter wall portion 80d. Figure 17 as well as Figure 18 The inner diameter wall portion 80d shown has an opening 415 that connects the inner chamber 80e with the space outside the tire 80.

[0107] Tire 80 is constructed using an elastic material. Examples of elastic materials for tire 80 include thermosetting elastomers such as natural rubber and synthetic rubber, thermoplastic elastomers, non-conductive elastomers, non-conductive rubber, and other polymer materials. Preferably, tire 80 is constructed using a non-conductive material.

[0108] The conductive strip 60 is continuously arranged circumferentially. In this embodiment, the conductive strip 60 is continuously arranged circumferentially along the inner circumferential surface 80f of the tread portion 80b. In this embodiment, the conductive strip 60 is continuously arranged throughout the entire circumference. Alternatively, the conductive strip 60 may be broken at one location or at multiple locations.

[0109] The conductive strip 60 includes a strip-shaped component that is both conductive and flexible. In this embodiment, the conductive strip 60 is formed into a strip by combining multiple conductive wires or conductive filaments and other wires 36. Moreover, the conductive strip 60 can also be any of a braided fabric or woven material. For example, the conductive strip 60 is formed by cross-braiding multiple conductive filaments.

[0110] Multiple conductors 83 are distributed along the tread 80a. In this embodiment, the multiple conductors 83 are distributed not only along the circumference of the tread 80a but also along the third width direction Y. Each of the multiple conductors 83 is arranged to penetrate the tread portion 80b. Therefore, in this embodiment, a first through hole 417 penetrating radially R is formed in the tread portion 80b. Figure 17 as well as Figure 18 The exemplified conductor 83 is inserted into the first through hole 417 in a manner that allows it to move radially R.

[0111] Each of the plurality of conductors 83 is electrically connected to the power supply body 32 and the conductive strip 60. Thus, the conductive strip 60 and the conductors 83 form a conductive path from the power supply body 32 to the power supply object 103. In this embodiment, the conductors 83 form a conductive path between the power supply body 32 and the power supply object 103 by contacting both the power supply body 32 and the conductive strip 60. Figure 17 as well as Figure 18 In the example shown, the conductor 83, positioned closest to the surface 32a of the power supply body 32, forms a conductive path from the power supply body 32 to the power supply object 103. The portion of the conductor 83 positioned on the outside of the tire 80 contacts the power supply body 32, while the portion positioned in the inner chamber 80e contacts the conductive strip 60. Examples of conductors 83 include conductive studs, conductive pins, bolts, and other conductive components.

[0112] The conductor 83 includes a columnar portion 83b and a locking portion 83c. In this embodiment, the conductor 83 is shaped like a rivet. The columnar portion 83b corresponds to the shaft portion of the rivet shape. The locking portion 83c corresponds to the head of the rivet shape.

[0113] The columnar portion 83b penetrates the limiting portion 441 and the tread portion 80b radially R. In this embodiment, the columnar portion 83b is cylindrical. Furthermore, the shape of the columnar portion 83b is not limited to cylindrical; it can also be a quadrangular prism with a quadrilateral cross-section, or other polygonal shapes, such as shapes with steps in the long side direction, or other shapes whose diameter varies along the length direction. Figure 17 as well as Figure 18 The columnar portion 83b shown is inserted into the first through hole 417 formed in the tread portion 80b. With this structure, the tread portion 80b can restrict the movement of the conductor 83 in the circumferential direction and in the third width direction Y.

[0114] The locking portion 83c is located radially inside the tread portion 80b and is electrically connected to the conductive strip 60. In this embodiment, the locking portion 83c is disposed radially inside the columnar portion 83b, and at least one dimension in the third width direction Y and the circumferential direction is formed to be larger than that of the columnar portion 83b. Figure 17 as well as Figure 18 The example shows a locking portion 83c formed on the inner end of the conductor 83 in the radial direction R, and its dimensions in both the third width direction Y and the circumferential direction are larger than those of the columnar portion 83b. Furthermore, in this embodiment, the conductive strip 60 is configured to contact the locking portion 83c from the inner side in the radial direction R. A conductive path is formed through direct contact between the locking portion 83c and the conductive strip 60.

[0115] The limiting member 440 includes a limiting portion 441 and a connecting portion 442 that connects the limiting portion 441 to the wheel 82. The limiting portion 441 is disposed in the inner chamber 80e. In this embodiment, the connecting portion 442 extends from the limiting portion 441 toward the inner side in a radial direction R and is exposed to the outside of the inner chamber 80e through the opening 415 of the inner diameter wall portion 80d.

[0116] The limiting part 441 is disposed on the outer side of the radial direction R relative to the conductive strip 60 and the plurality of locking parts 83c, and is configured to limit the movement of the conductive strip 60 and the plurality of conductors 83 outward in the radial direction R. Figure 17 as well as Figure 18 In the example shown, the limiting portion 441 is disposed separately from the conductive strip 60 and the plurality of locking portions 83c on the outer side of the radial R. Furthermore, if the limiting portion 441 is disposed within the inner chamber 80e, a portion of the limiting portion 441 may also be disposed outside the inner chamber 80e.

[0117] In this embodiment, the limiting portion 441 is annular, having an outer peripheral surface opposite to the inner peripheral surface 80f of the tread portion 80b, and has a plurality of second through holes 443 extending radially R. Figure 17 as well as Figure 18 In the example shown, it becomes a cylindrical shape with inner edge portions 444 extending radially inward at both ends in the third width direction Y.

[0118] Each of the plurality of second through holes 443 is formed in the portion other than the edge portion 444, such that it is positioned in communication with each of the plurality of first through holes 417 formed in the tread portion 80b. The dimensions of at least one of the second through holes 443 in the third width direction Y and the circumferential direction are formed to be smaller than the locked portion 83c. Figure 17 as well as Figure 18 The third width direction Y and the circumferential dimension of the second through hole 443 shown are both smaller than those of the locking portion 83c. Therefore, when the locking portion 83c moves outward in the radial direction R, it is hooked on the inner circumferential surface of the limiting portion 441, and the limiting portion 441 restricts the outward movement of the conductor 83 as a whole in the radial direction R.

[0119] According to this structure, the length from the surface of the limiting portion 441 that restricts the radial movement of the conductor 83 to the tread 80a becomes shorter. Figure 17 as well as Figure 18 In the example shown, the length from the inner circumferential surface of the limiting portion 441 to the tread 80a becomes shorter. Therefore, it is possible to narrow the spacing between the locations where the multiple conductors 83 protrude from the tread 80a.

[0120] In this embodiment, when no load is applied to the tread portion 80b, the limiting portion 441 is configured to be separated radially inward relative to the tread portion 80b and radially outward relative to the conductive strip 60 and the plurality of locking portions 83c. Furthermore, when the tread portion 80b is deformed due to a load, the limiting portion 441 may not be separated from the conductive strip 60 and the plurality of locking portions 83c. For example, as described later, if the conductor 83 experiences centrifugal force due to the rotation of the tire 80, the conductor 83 may come into contact with the limiting portion 441.

[0121] The limiting component 440 is made of a rigid material capable of suppressing deformation of the tire 80 due to the centrifugal force generated by the conductor 83. Examples of such materials include synthetic resins, aluminum, and other metals.

[0122] Wheel 82 supports tire 80 from the inside of radial R. Figure 16 In the example shown, the wheel 82 is supported by the connecting mechanism 105 to be rotatable. Furthermore, the wheel 82 rotates using friction generated between the power supply unit 32 and the tire 80 due to the movement of the vehicle 11. In this embodiment, the wheel 82 includes a main body portion 451 and an axle portion 81.

[0123] The main body 451 is fixed to either the side wall portion 80c or the inner diameter wall portion 80d. Figure 17 (Illustration of a portion of the main body 451 omitted) and Figure 18 The main body 451 shown in the example is disc-shaped and fixed to the inner diameter wall portion 80d. Furthermore, the shape of the main body 451 is not limited to a disc shape; it can be any shape as long as it can support the tire 80 from the inner side in the radial direction R.

[0124] For example, the main body 451 may be formed by multiple spokes extending radially from the center of rotation, or it may be formed by combining multiple components.

[0125] The shaft portion 81 serves as a rotatable support. In this embodiment, the shaft portion 81 extends from the main body portion 451 along the rotation axis A2 of the tire 80. Figure 16 as well as Figure 18 The example shown ( Figure 17 (Description of shaft 81 omitted) In this description, shaft 81 is supported by a bearing (not shown) provided in the connecting mechanism 105 so that it can rotate.

[0126] The shaft 81 has a rotating terminal 86a that rotates integrally with the tire 80 (see reference). Figure 11 The rotating terminal 86a and the fixed terminal 86b of the connecting mechanism 105 (see reference) Figure 12 Electrical connection. The fixed terminal 86b receives power from the rotary terminal 86a and transmits power to the power supply object 103 via a transmission line (not shown). Examples of rotary terminal 86a include components on the rotating side of a slip ring, components on the rotating side of a rotary connector, etc. Examples of fixed terminal 86b include components on the fixed side of a slip ring, components on the fixed side of a rotary connector, etc.

[0127] The limiting member 440 is fixed to the wheel 82. Connected to the wheel 82 via the connecting part 442, the limiting member 440 is disposed within the inner chamber 80e of the tire 80. Figure 18 In the example shown, the connecting part 442 is connected to the main body part 451 at a position on the inner diameter side of the inner diameter wall part 80d of the tire 80, which is closer to the radial R.

[0128] The wheel 82 is made of a material with higher rigidity than the tire 80. For example, the materials used to make the wheel 82 include aluminum or iron and other metals, or synthetic resins.

[0129] Preferably, the wheel 82 is made of a conductive material. In this embodiment, the wheel 82 is formed of aluminum. With this structure, the wheel 82 can form part of a conductive path. Therefore, if a structure is adopted in which the conductive strip 60 contacts the wheel 82, it is not necessary to install wiring for forming a conductive path from the conductive strip 60 to the connecting mechanism 105 on the wheel 82, and the construction of the wheel 82 becomes simple.

[0130] More preferably, when the wheel 82 is made of a conductive material, the limiting member 440 is also made of a conductive material. In this embodiment, the wheel 82 and the limiting member 440 are integrally formed and are made of aluminum. According to this structure, if the conductive strip 60 is brought into contact with the limiting part 441, a conductive path can be formed from the conductive strip 60 to the connecting mechanism 105. Figure 18 In the example shown, a conductive path from the conductive strip 60 to the connecting mechanism 105 is formed by bringing the edge 444 of the limiting member 440 into contact with the conductive strip 60. Therefore, it is not necessary to install wiring for forming the conductive path from the conductive strip 60 to the connecting mechanism 105 on the wheel 82, thus simplifying the construction of the wheel 82.

[0131] When the limiting member 440 and the wheel 82 are integrated and made of a conductive material, if a structure is adopted that allows the conductor 83 to contact the limiting member 440, a conductive path from the conductor 83 to the connecting mechanism 105 can be formed by making the conductor 83 contact the limiting member 440. Therefore, in this configuration, the conductive strip 60 can be omitted, simplifying the construction of the receiving body 10.

[0132] The filler 146 is filled in the inner chamber 80e. In this embodiment, the filler 146 is filled in the space radially inside the conductive strip 60, the space between the tread portion 80b and the limiting portion 441, and the space between the sidewall portion 80c and the limiting portion 441. With this structure, the filler 146 can maintain the tire 80 in a state of expansion to an appropriate shape. Examples of filler 146 include flexible containers containing gels, liquids, gases, etc., flexible porous materials such as polyurethane foam, non-conductive elastomers, conductive elastomers, coil springs, etc.

[0133] Reference Figures 17-20 The method of using the power receiving body 10 is explained. Figure 19 as well as Figure 20 The state of the rotating electric receiver 10 is shown.

[0134] like Figure 17 as well as Figure 18 As shown, a conductive path is formed from the power supply body 32 to the power supply object 103 through contact between the power receiving body 10 and the power supply body 32. In this embodiment, the connecting mechanism 105 (see reference 105) Figure 16 The current-receiving body 10 is positioned to contact the power-supplying body 32. In this configuration, the current-receiving body 10 can also contact the power-supplying body 32 in any state, whether rotating or not. Figure 17 as well as Figure 18 The power receiving body 10 shown in the example is in contact with the power supply body 32 in a non-rotating state.

[0135] In detail, a conductive path is formed from the power supply body 32 to the power supply object 103 by any one of the plurality of conductors 83 coming into contact with both the power supply body 32 and the conductive strip 60. In this case, a conductive path is formed in which current flows in the order described below to the power supply body 32, the conductors 83, the conductive strip 60, the wiring provided on the wheel 82 (in this embodiment, the wheel 82), the connecting mechanism 105, and the power supply object 103. Figure 17 as well as Figure 18 In the example shown, the conductor 83, positioned closest to the surface 32a of the power supply body 32, is in contact with the power supply body 32. Furthermore, the locking portion 83c of the conductor 83 in contact with the power supply body 32 is in contact with the conductive strip 60.

[0136] Preferably, the receiving element 10 is positioned at the location where the tire 80 undergoes elastic compression deformation during contact with the power supply element 32. This configuration ensures proper contact with the power supply element 32 even when the power supply element 32 has a recess. In this embodiment, the receiving element 10 is pressed against the power supply element 32 via the connecting mechanism 105, such that the tire 80 is elastically compressed.

[0137] like Figure 19 as well as Figure 20 As shown, if the power supply object 103 moves along the road 20, the tire 80 in contact with the power supply body 32 rotates. As the tire 80 rotates, the conductor 83, the conductive strip 60, the restraining member 440, the filling member 146, and the wheel 82 also rotate together with the tire 80.

[0138] In this situation, the conductor 83 moves outward radially R due to centrifugal force. Simultaneously, the conductive strip 60 also deforms outward radially R due to centrifugal force, pressing against the conductor 83. Figure 19 as well as Figure 20 In the example shown, the conductive strip 60 expands radially outward due to centrifugal force and comes into contact with the locking portions 83c of the plurality of conductors 83. This forms a conductive path from the conductors 83 to the power supply object 103.

[0139] The limiting member 440 restricts the movement of the conductor 83 toward the outer side of the radial direction R. The conductor 83 abuts against the limiting member 441 from the outer side of the radial direction R, thereby limiting its movement toward the outer side of the radial direction R by a constant amount. At the same time, the conductor 83 disposed at a position close to the road surface 20a abuts against the surface 32a of the power supply body 32, thereby limiting its movement toward the outer side of the radial direction R.

[0140] The multiple conductors 83 are maintained in a state of protruding from the tread 80a of the tire 80 while restricting their movement outward in the radial direction R. Therefore, the conductors 83 can reliably contact the power supply 32 without obstructing the tire 80.

[0141] If the tire 80 rotates, the conductor 83 that reaches the position closest to the surface 32a of the power supply body 32 will sequentially come into contact with the power supply body 32. Thus, the state in which any one of the plurality of conductors 83 is always in contact with the power supply body 32 is maintained. As a result, power can be stably supplied from the power supply device 30 to the power supply object 103.

[0142] [Other Implementation Methods]

[0143] Next, other embodiments of the power receiving body 10 will be described.

[0144] (1) In the above embodiment, the structure in which the connecting member 51 is connected to the base member 42 in a manner that allows it to swing about the pivot axis A3 is described as an example. However, it is not limited to such an example. For example, the connecting member 51 may also be integrally formed with the base member 42, or even other components may be integrally fixed to the base member 42.

[0145] (2) In the above embodiment, as an example, the power receiving body 10 is described as having a rotating terminal 86a and a conductive wire 85, and the conductive strip 60 is continuously arranged in the circumferential direction along the inner circumferential surface of the tread portion 80b. However, it is not limited to such an example. For example, the power receiving body 10 may not have a rotating terminal 86a and a conductive wire 85, and the conductive strip 60 may be electrically connected to the fixed terminal 86b via a brush. For example, the conductive strip 60 may also be continuously arranged along the inner circumferential surface of the tread portion 80b or along the circumferential direction of the tire 80.

[0146] (3) In the above embodiments, the conductive strip 60 is described as an example using a braided fabric or a woven fabric of conductive wires or conductive filaments. However, it is not limited to such examples; for example, the conductive strip 60 may also have a flexible busbar, a conductive elastomer, etc.

[0147] (4) In the above embodiment, as an example, a plurality of conductors 83 are arranged dispersedly along the second width direction Y, and the dimension L1 of the conductive strip 60 in the second width direction Y is set to overlap with the entire plurality of conductors 83 when viewed radially. However, it is not limited to such an example. For example, the plurality of conductors 83 may not be arranged dispersedly along the second width direction Y, and the conductive strip 60 may be arranged in a row along the circumference. For example, the plurality of conductors 83 may not overlap with the conductive strip 60 when viewed radially, but may be electrically connected to the conductive strip 60.

[0148] (5) In the above embodiment, as an example, the conductive strip 60 is configured to electrically connect all N conductive wires 85 to each other, and the total cross-sectional area of ​​the N conductive wires 85 is set according to the magnitude of the current received from the power supply 32. However, it is not limited to such an example. For example, the conductive strip 60 may be broken in the circumferential direction, and each may be connected to the rotating terminal 86a through an independent and different conductive wire 85. For example, the total cross-sectional area of ​​the N conductive wires 85 may not be set according to the magnitude of the current received from the power supply 32.

[0149] (6) In the above embodiment, the power receiving body 10 is described as having a limiting portion 441, which has a structure in which the limiting member 440 is disposed on the outer side of the radial direction R relative to the conductive strip 60 and the plurality of locking portions 83c. However, it is not limited to such an example. For example, the limiting member 440 may also be disposed on the inner side of the radial direction R relative to the locking portions 83c. For example, the power receiving body 10 may not have the limiting portion 441. For example, the conductor 83 may not have the locking portion 83c. For example, the outer diameter of the inner end of the conductor 83 in the radial direction R may be smaller than the diameter of the through hole. For example, the conductor 83 may also be locked by the conductive wire 85 so that it does not detach from the tire 80.

[0150] (7) In the above embodiment, the support arm 52 is described as an example of an arm component structure. However, it is not limited to such an example, for example, the support arm 52 may also be composed of multiple arm components.

[0151] (8) In the above embodiment, as an example, the first width direction Y is described as being along the vehicle width direction VY in the contact posture P1, and as being along the vertical direction Z in the storage posture P3. However, it is not limited to such an example. For example, in the contact posture P1, the first width direction Y may also be along the vehicle front-rear direction VX, and the second width direction may also be a direction orthogonal to the vehicle front-rear direction VX.

[0152] (9) In the above embodiment, the structure in which the shaft 81 is fixed to the support arm 52 is described as an example. However, it is not limited to such an example. For example, the shaft 81 may be supported by the support arm 52 via a bearing so that it can rotate around the rotation axis A2 integrally with the rotating terminal 86a.

[0153] (10) In the above embodiment, the structure in which the power supply unit 32 is buried in the road 20 is described as an example. However, it is not limited to such an example. For example, the power supply unit 32 may also be arranged in a position above the road surface 20a, or in a lateral position.

[0154] (11) In the above embodiment, the structure of the power supply system 101 having the connection mechanism 105 was described as an example. However, it is not limited to such an example. For example, the power receiving body 10 may be directly connected to the power supply object 103 without the connection mechanism 105. In this case, the power supply object 103 is electrically connected to the power receiving body 10 and keeps the power receiving body 10 rotatable.

[0155] (12) In the above embodiment, a structure in which a non-conductive material is used for the tire 80 was described as an example. However, it is not limited to such an example; for example, the tire 80 may also be constructed using a conductive material. Examples of such materials include conductive elastomers and conductive rubber.

[0156] (13) In the above embodiment, the structure formed by combining multiple wires with the conductive strip 60 is described as an example. However, it is not limited to such an example. For example, the conductive strip 60 may also be a component that combines plate-shaped conductors and conductors other than wires and forms a strip shape.

[0157] (14) In the above embodiment, an example of the conductor 83 being composed of a conductive component has been described. However, it is not limited to such an example; for example, the conductor 83 may also be a conductive wire, a conductive filament, or other wire. Furthermore, the conductor 83 may also be a conductive twisted wire formed by twisting together multiple wires 36.

[0158] (15) In the above embodiment, the structure in which the locking portion 83c is formed at the inner end of the conductor 83 in the radial direction R is described as an example. However, it is not limited to such an example. For example, the conductor 83 may also have a protrusion (not shown) that protrudes further inward in the radial direction R than the locking portion 83c. Moreover, a conductive path from the power supply body 32 to the power supply object 103 may be formed by contacting the protrusion with the conductor 83.

[0159] (16) In the above embodiment, as an example, a structure was described in which a conductive path from the conductor 83 to the power supply object 103 was formed by the locking portion 83c directly contacting the conductive strip 60. However, it is not limited to such an example. For example, the locking portion 83c may not be in direct contact with the conductive strip 60. Instead, a conductive component or part may be provided separately from the locking portion 83c and then made to contact the conductive strip 60, thereby forming a conductive path from the conductor 83 to the power supply object 103. As such a part, for example, a part that has been sprayed with a conductive material for clamping small conductive particles may be provided in a portion that is radially R inside the locking portion 83c. A portion of the conductive path may also be pre-formed by fixing the conductor 83 to the conductive strip 60 using a component that fixes the conductor 83 to the conductive strip 60, or by fixing the conductor 83 to the conductive strip 60 using a fixing method such as welding.

[0160] (17) In the above embodiment, the tire tread 80b is described as a cylindrical structure as an example. However, it is not limited to such an example. For example, the tire tread 80b can roll on the surface 32a of the power supply body 32 and is not limited to a cylindrical shape. Examples of the shape of the tire tread 80b include a rectangular cross-section with rounded corners, an elliptical shape, or an annular cross-section with a circular arc shape.

[0161] (18) In the above embodiment, a structure in which the limiting part 441 is separated from the conductive strip 60 and the plurality of locking parts 83c and is arranged on the outer side of the radial R is described as an example. However, it is not limited to such an example. For example, the limiting part 441 may also be arranged in a position in which it is fixed in contact with the conductive strip 60 and the plurality of locking parts 83c from the outer side of the radial R.

[0162] (19) In the above embodiment, a structure in which the connecting part 442 is disposed in the inner chamber 80e and a portion thereof is exposed to the outside of the inner chamber 80e is described as an example. However, it is not limited to such an example; for example, the connecting part 442 may be disposed entirely in the inner chamber 80e. In addition, the connecting part 442 may also be fixed to the wheel 82 via other components such as a bracket.

[0163] (20) In the above embodiments, the conductive strip 60 is described as an example of a structure in which a braided fabric or a woven fabric using conductive wires or conductive filaments is used. However, it is not limited to such examples; for example, the conductive strip 60 may also be a flexible busbar, a conductive elastomer, etc.

[0164] (21) In the above embodiment, an example of the wheel 82 being made of a conductive material was described. However, it is not limited to such an example; for example, the wheel 82 may also be made of a non-conductive material. If such a structure is used, a conductive path from the conductive strip 60 to the power supply object 103 can be formed by conductive wires covered with an insulating film.

[0165] (22) In the above embodiment, the structure in which the filling member 146 is filled in the inner chamber 80e of the tire 80 is described as an example. However, it is not limited to such an example, for example, the filling member 146 may be fixed or not fixed in at least one of the tire 80, the conductive strip 60 and the restraining member 440.

[0166] (23) Furthermore, the structures disclosed in the above embodiments can be combined with structures disclosed in other embodiments, provided that no contradiction arises. Regarding other structures, the embodiments disclosed in this specification are merely examples in all respects. Therefore, various modifications can be appropriately made without departing from the spirit of the invention.

[0167] [Summary of the above implementation methods]

[0168] The wheel-type power receiver (10) of the present invention will be described below.

[0169] As one embodiment, the wheel-type power receiver (10) is a wheel-type power receiver (10) that receives power from the power supply body (32) by rolling on the surface (32a) of the power supply body (32) provided on the road surface (20a) of the road (20) in a manner extending along the road (20). It includes: a tire (80) which is made of an elastic material and has an inner chamber (80e) inside; a conductive strip (60) which is disposed in the inner chamber (80e); and a plurality of conductors (83) which are distributed along the outer peripheral surface of the tire (80), i.e., the tread (80a); the tire (80) has an annular tread portion (80b) forming the tread (80a), the conductive strip (60) is a strip-shaped member that is conductive and flexible and is continuously disposed along the circumference of the tire (80), and each of the plurality of conductors (83) is disposed through the tread portion (80b) and electrically connected to the conductive strip (60).

[0170] According to this structure, each of the plurality of conductors (83) distributed along the tread (80a) of the tire (80) is arranged to penetrate the tread portion (80b). Therefore, even when the tire (80) is rotating, the portion of any conductor (83) exposed on the tread (80a) is in contact with the power supply body (32) and can receive power from the power supply body 32. In addition, each of the plurality of conductors (83) is electrically connected to a conductive strip (60) continuously arranged along the circumference of the tire (80), so the reliability of the conductive connection for receiving power from the plurality of conductors (83) is easily improved. Moreover, the conductive strip (60) is a flexible strip-shaped member and is disposed in the inner chamber (80e) of the tire (80), so the connection between the plurality of conductors (83) and the conductive strip (60) can be made, and the ease of elastic deformation of the tire (80) is easily ensured.

[0171] As one embodiment, the receiving body (10) includes: a rotating terminal (86a) disposed on the inner side of the conductive strip (60) in the radial direction (R) and rotating integrally with the tire (80); and a conductive wire (85) electrically connecting the conductive strip (60) and the rotating terminal (86a), wherein the conductive strip (60) is continuously disposed in the circumferential direction along the inner circumferential surface (80f) of the tread surface (80b).

[0172] According to this structure, each of the plurality of conductors (83) is electrically connected to the conductive strip (60), and the conductive strip (60) is connected to the rotating terminal (86a) via conductive wires (85). Therefore, compared to the case where each of the plurality of conductors (83) is connected to the rotating terminal (86a) via conductive wires (85), it is easier to reduce the number of conductive wires (85). Thus, it is easier to ensure the ease of elastic deformation of the tire (80).

[0173] In one embodiment, the conductive strip (60) is a braided fabric or a woven fabric using conductive wires or conductive filaments.

[0174] According to this structure, it is easy to ensure high conductivity and flexibility of the conductive strip (60).

[0175] In one implementation, a plurality of conductors (83) are distributed not only along the circumference of the tread (80a) but also along the width direction (second width direction Y) of the tread (80a), and the dimension (L1) of the width direction (second width direction Y) of the conductive strip (60) is set to overlap with the whole of the plurality of conductors (83) distributed along the width direction (second width direction Y) when viewed radially.

[0176] According to this structure, the multiple conductors (83) are distributed not only along the circumference of the tread (80a) but also along the width direction of the tread (80a), so it is easy to ensure a high charge receiving capacity of the multiple conductors (83). Moreover, according to this structure, the dimension L1 of the width direction (second width direction Y) of the conductive strip 60 is set to overlap with the entirety of the multiple conductors (83) distributed along the width direction (second width direction Y) when viewed radially, so it is easy to connect all conductors (83) to the conductive strip (60).

[0177] As one embodiment, it includes: a rotating terminal (86a) disposed on the inner side of the conductive strip (60) in the radial direction R and rotating integrally with the tire (80); and a conductive wire (85) electrically connecting the conductive strip (60) and the rotating terminal (86a), wherein the conductive strip (60) and the rotating terminal (86a) are connected by N (N is an integer greater than or equal to 1) conductive wires (85), the conductive strip (60) is configured to electrically connect all of the N conductive wires (85) to each other, and the total cross-sectional area of ​​the N conductive wires (85) is set according to the magnitude of the current received from the power supply (32).

[0178] According to this structure, the required current flows by utilizing all of the N conductive wires (85) interconnected by the conductive strip (60), so the cross-sectional area of ​​the conductive wires (85) can be kept small. Therefore, it is easy to ensure the ease of elastic deformation of the tire (80) and to make the current-receiving body (10) lightweight.

[0179] As one embodiment, the wheel-type power receiver (10) includes a limiting member (440) which has a limiting portion (441) disposed in the inner chamber (80e). The direction orthogonal to the rotation axis A2 of the tire (80) is set as radial (R). Each of the plurality of conductors (83) has a locking portion (83c) located radially (R) inside the tread surface (80b). The limiting portion (441) is configured to be disposed radially (R) outside the conductive strip (60) and the plurality of locking portions (83c) and restricts the movement of the conductive strip (60) and the plurality of conductors (83) to the radial (R) outside.

[0180] According to this structure, by restricting the radial (R) outward movement of the multiple conductors (83) by the limiting component (440), the deformation of the tire (80) can be limited to a predetermined range by utilizing the centrifugal force acting on the conductive strip (60) and the multiple conductors (83) during the rotation of the tire (80). Therefore, even when the tire (80) rotates at high speed, it is easy to properly maintain the positional relationship of the multiple conductors (83) relative to the power supply (32), and in this respect, it is easy to improve the reliability of the conductive connection with the power supply (32).

[0181] In one embodiment, the limiting part (441) is configured to separate radially (R) inward relative to the tread portion (80b) when there is no load applied to the tread portion (80b), and radially (R) outward relative to the conductive strip (60) and the plurality of locked parts (83c).

[0182] According to this structure, the limiting part (441) is separated from the tread portion (80b) radially inward, so the elastic deformation of the tread portion (80b) radially is not easily hindered by the limiting part (441). In addition, the limiting part (441) is separated from the conductive strip (60) and the multiple locking parts (83c) radially outward, so although the conductive strip (60) and the multiple conductors (83) move radially inward following the elastic deformation of the tread portion (80b), they are not easily hindered by the limiting part (441). Therefore, the tread portion (80b) and the multiple conductors (83) can easily deform or shift with the unevenness of the power supply body (32), and the contact between the power supply body (32) and the multiple conductors (83) can be easily maintained.

[0183] As one implementation, for the wheel-type power receiver (10), each of the plurality of conductors (83) has a radial (R) through-limiting portion (441) and a columnar portion (83b) of the tread portion (80b), a locking portion (83c) is disposed on the inner side of the radial (R) relative to the columnar portion (83b), and at least one dimension of the tire (80) in the third width direction (Y) and the circumferential direction is formed to be larger than the columnar portion (83b), and the conductive strip (60) is configured to contact the locking portion (83c) from the inner side of the radial R.

[0184] According to this structure, it is possible to appropriately arrange the limiting part (441) relative to the conductive strip (60) and the plurality of locking parts (83c) on the outer side of the radial direction (R), and restrict the movement of the conductive strip (60) and the plurality of conductors (83) to the outer side of the radial direction (R). Moreover, according to this structure, the conductive strip (60) is arranged to contact the locking part (83c) from the inner side of the radial direction (R), so when the conductor (83) is in contact with the power supply body (32), the electrical connection between the conductive strip (60) and the conductor (83) can be easily and well ensured by utilizing the force received from the power supply body (32) towards the inner side of the radial direction (R).

[0185] As one implementation, the wheel-type power receiver (10) also has a wheel (82) that supports the tire (80) from the inner side in the radial direction (R), and a limiting member (440) is fixed to the wheel (82).

[0186] According to this structure, the limiting part (441) can be positioned in a suitable location in the inner chamber (80e) of the tire (80).

[0187] The wheel-type power receiver of the present invention only needs to achieve at least one of the above-mentioned effects.

[0188] Explanation of reference numerals in the attached figures

[0189] 10: Receiving body (wheel-type receiving body), 12: Receiving device, 16: Wheel, 20: Road, 20a: Road surface, 32: Power supply body, 32a: Surface, 36: Wire, 80: Tire, 80a: Tread, 80b: Tire tread area, 80e: Inner chamber, 80f: Inner circumferential surface, 82: Wheel, 83: Conductor, 83b: Columnar part, 83c: Locking part, 84: Conductive strip, 85: Conductive wire, 86a: Rotating terminal, 101: Power supply system, 440: Restricting component, 441: Restricting part, A2: Rotation axis, L1: Dimension of the conductive strip in the width direction, Y: Second width direction, Third width direction (width direction).

Claims

1. A wheel-type power receiver that receives power from a power supply body by rolling on the surface of a power supply body disposed on the road surface in a manner extending along the road, comprising: Tires are made of elastic materials and have an inner chamber inside; Conductive strip, disposed in the aforementioned inner chamber; and Multiple conductors are distributed along the outer circumference of the tire, i.e., the tread. The tire described above has an annular tread portion that forms the tread. The aforementioned conductive strip is a strip-shaped component that is both conductive and flexible, and is continuously arranged along the circumference of the tire. Each of the aforementioned conductors is configured to penetrate the aforementioned tire tread and be electrically connected to the aforementioned conductive strip.

2. The wheel-shaped power receiver according to claim 1, wherein, It comprises: a rotating terminal disposed radially inside the conductive strip and rotating integrally with the tire; and a conductive wire electrically connecting the conductive strip and the rotating terminal. The aforementioned conductive strip is continuously arranged along the inner circumferential surface of the aforementioned tread portion.

3. The wheel-shaped power receiver according to claim 1 or 2, wherein, The aforementioned conductive strip is a woven fabric or a woven material that uses conductive wires or conductive filaments.

4. The wheel-type power receiver according to claim 1 or 2, wherein, The aforementioned conductors are distributed not only along the circumferential direction of the tire tread but also along the width direction of the tire tread. The dimension of the aforementioned conductive strip in the width direction is set to overlap with the entirety of the plurality of aforementioned conductive bodies that are dispersed and arranged along the aforementioned width direction when viewed radially.

5. The wheel-type power receiver according to claim 1 or 2, wherein, It comprises: a rotating terminal disposed radially inside the conductive strip and rotating integrally with the tire; and a conductive wire electrically connecting the conductive strip and the rotating terminal. The aforementioned conductive strip and the aforementioned rotating terminal are connected by N conductive lines (N is an integer greater than or equal to 1). The aforementioned conductive strip is configured to electrically connect all of the N aforementioned conductive wires to each other. The total cross-sectional area of ​​the N conductive lines is determined based on the magnitude of the current received from the power supply.

6. The wheel-type power receiver according to claim 1 or 2, wherein, It includes a limiting member, which has a limiting portion disposed in the aforementioned interior chamber. Let the direction orthogonal to the axis of rotation of the tire be defined as radial. Each of the plurality of conductors described above has a locking portion located on the inner side of the radial direction of the tread portion. The aforementioned limiting portion is configured to be disposed on the outer side of the aforementioned radial direction relative to the aforementioned conductive strip and the plurality of aforementioned locking portions, thereby restricting the movement of the aforementioned conductive strip and the plurality of aforementioned conductors to the outer side of the aforementioned radial direction.

7. The wheel-shaped power receiver according to claim 6, wherein, When no load is applied to the tread portion, the aforementioned limiting portion separates radially inward relative to the tread portion and radially outward relative to the conductive strip and the plurality of the aforementioned locking portions.

8. The wheel-shaped power receiver according to claim 6, wherein, Each of the plurality of the aforementioned conductive elements has a columnar portion that extends radially through the aforementioned limiting portion and the aforementioned tread portion. The aforementioned locking portion is disposed inside the aforementioned columnar portion in the radial direction, and at least one dimension in the width direction and the circumferential direction of the tire is formed to be larger than the aforementioned columnar portion. The conductive strip is configured to contact the locked portion from the inner side of the radial direction.

9. The wheel-shaped power receiver according to claim 6, wherein, It also includes a wheel that supports the tire from the inner side of the aforementioned radial direction. The aforementioned limiting components are fixed to the aforementioned wheels.

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