JP4457386B2 - Current collecting wheel for cordless power transmission - Google Patents

Description

  The present invention relates to a current collecting wheel for cordless power transmission, in which an object on the floor, which is an electric product that is self-propelled and located on the floor, is directly cordlessly collected from the floor.

  Power supply to self-propelled mobile electrical appliances such as automatic vacuum cleaners and robots can be achieved by connecting the electrical outlet with a wall outlet using a cable. The range is limited by the length of this cable, and there is a complaint that it cannot be flexibly redesigned, and that the cable that always comes with mobile electrical products sometimes interferes with handling and appearance. there were.

  In addition, mobile electric products that use a battery as a power source without providing a cable have been unsatisfactory because the mounted battery is heavy and bulky, and there is an unsatisfactory limit in reducing the size and weight.

In order to eliminate this dissatisfaction, a large number of electrode plates are arranged at predetermined intervals on the floor, and each of these electrode plates is alternately changed in polarity and connected to a power source so that the electrical products on the floor can be used. A plurality of current collectors that are insulated from each other, wherein the current collectors are in contact with one polarity electrode plate, and at the same time, another current collector is in contact with the other polarity electrode plate. Arranged so that the distance between the electrode plates is larger than the contact range of the current collector so that one current collector does not contact two electrode plates of different polarities at the same time. A configuration is disclosed in which power can be supplied to an electrical product in a cordless manner.
Japanese Unexamined Patent Publication No. 09-028922

  However, in the above-described prior art, the contact of each current collector of the object on the floor, which is an electrical product on the floor, with respect to a large number of electrode plates arranged on the floor is a sliding contact. As a result of the movement, the current collector scrapes off the dust on the floor surface, thereby causing a contact failure and possibly causing a fire.

  Also, since the contact of the current collector with the floor surface is sliding contact, if the floor surface is uneven, the current collector is caught by the floor surface unevenness, and a catching force is generated between them. There has been a serious problem that the smoothness of the movement of the objects on the floor of the floor has deteriorated over time, and in some cases, the current collector is damaged.

  Therefore, the present invention was devised to solve the above-described problems in the prior art, and the contact of the current collector (power receiving electrode) of the object on the floor with the electrode plate (power transmitting electrode) disposed on the floor surface, Achieving this through a rotating contact is a technical issue, and safely and reliably achieves contact and separation of the power receiving electrode with respect to the power transmitting electrode without scraping the dust on the floor and catching it on the floor. For the purpose.

Among the present invention for solving the above technical problems, the configuration of the invention according to claim 1 is:
A plurality of power transmission electrodes are arranged on the floor surface, at least an underfloor wiring having a power line is provided, the power transmission electrodes are connected to the underfloor wiring, and a distance between each power transmission electrode is provided on an object on the floor located on the floor surface. From a power supply floor that is set to a value at which remote power transmission electrodes are in contact with the power receiving electrode separately and simultaneously, with a storage circuit that stores power and a load that consumes power, on a floor that is self-propelled on the floor A current collecting wheel for cordless power transmission to supply power to an object,
A plurality of power receiving electrodes are at least paired over a part of the ground surface, which is the outer peripheral surface of the circular frame having a frictional resistance that does not cause unnecessary slippage between the power supply floor and the floor surface. Two are arranged in a form that contacts the floor surface at the same time, and this power receiving electrode is connected to at least the power storage circuit,
Each power receiving electrode is individually electrically independent, and the connection function part that electrically connects the body of the object on the floor and the current collecting wheel is connected to each power receiving electrode on a one-to-one basis, insulated from each other, and fixed to the axle The electrode piece and a current collecting piece slidingly contacting the electrode piece on a one-to-one basis,
It is in.

Further, the configuration of the invention described in claim 2 is as follows.
A plurality of power transmission electrodes are arranged on the floor surface, at least an underfloor wiring having a power line is provided, the power transmission electrodes are connected to the underfloor wiring, and a distance between each power transmission electrode is provided on an object on the floor located on the floor surface. From a power supply floor that is set to a value at which remote power transmission electrodes are in contact with the power receiving electrode separately and simultaneously, with a storage circuit that stores power and a load that consumes power, on a floor that is self-propelled on the floor A current collecting wheel for cordless power transmission to supply power to an object,
A plurality of power receiving electrodes are at least paired over a part of the ground surface, which is the outer peripheral surface of the circular frame having a frictional resistance that does not cause unnecessary slippage between the power supply floor and the floor surface. Two are arranged in a form that contacts the floor surface at the same time, and this power receiving electrode is connected to at least the power storage circuit,
Connect each electrode that is located on the opposite side of the axle to each other, and connect the connection function part that electrically connects the main body and the collecting wheel to the part that is in contact with the floor with respect to the axle. It was composed of a current collecting piece that was in sliding contact with the power receiving electrode located on the grounding surface part on the side
It is in.

  Furthermore, the configuration of the invention according to claim 3 is as follows.
A plurality of power transmission electrodes are arranged on the floor surface, at least an underfloor wiring having a power line is provided, the power transmission electrodes are connected to the underfloor wiring, and a distance between each power transmission electrode is provided on an object on the floor located on the floor surface. From a power supply floor that is set to a value at which remote power transmission electrodes are in contact with the power receiving electrode separately and simultaneously, with a storage circuit that stores power and a load that consumes power, on a floor that is self-propelled on the floor A current collecting wheel for cordless power transmission to supply power to an object,
A plurality of power receiving electrodes are at least paired over a part of the ground surface, which is the outer peripheral surface of the circular frame having a frictional resistance that does not cause unnecessary slippage between the power supply floor and the floor surface. Two are arranged in a form that contacts the floor surface at the same time, and this power receiving electrode is connected to at least the power storage circuit,
A pair of forward and reverse rectifier elements is connected to each power receiving electrode at one terminal, and the other terminal of each rectifier element is connected in common with the same polarity to form a rectifier circuit. The connection function unit for electrically connecting the pair of electrode pieces fixed to the axle with the current collecting wheel fixed immovably and the output terminals of the rectifier circuit are separately connected, and the electrode pieces are in sliding contact with each other. Having a pair of current collecting pieces,
It is in.

In the first , second, and third aspects of the invention, each power transmission electrode is spaced apart from a pair of power reception electrodes provided on one current collecting wheel of the object on the floor. Since the contact values are set separately and simultaneously, the pair of power transmission electrodes and power reception electrodes are always in one-to-one contact at the same time, and reliable power supply to the object on the floor is achieved.

  The current collecting wheel has a frictional resistance that does not cause unnecessary slipping between the ground surface and the floor surface, which is the outer peripheral surface of the circular frame in which a plurality of power receiving electrodes are arranged over the entire circumference. When an object on the floor travels on the floor surface, it always rotates and moves without sliding on the floor surface and without idling.

  The plurality of power receiving electrodes are arranged in such a manner that at least two of the power receiving electrodes are in contact with the floor surface at the same time over the entire circumference of the grounding surface of the current collecting wheel, and each power receiving electrode is at least connected to the power storage circuit. Therefore, when the current collecting wheel is positioned on the plurality of power transmission electrodes on the floor and separate power transmission electrodes and power reception electrodes are contacted at the same time, the connection between the object on the floor and the power transmission electrode is achieved. Supply of power to the storage circuit of the object is achieved.

  Note that the connection of the power receiving electrode is not limited to the power storage circuit, and may be connected to a load as necessary. In this case, the load is supplied with the power storage circuit.

  Since a pair of receiving electrodes is composed of one collecting wheel, the structure for forming the receiving electrode on the object on the floor becomes compact, and the current cannot be collected due to the undulation of the floor or the inclination of the object on the floor. There is almost no and a stable current collecting operation is performed.

According to claim 1, since each power receiving electrode is simply connected to the electrode piece of the direct connection function unit, the electrical connection configuration on the side of the current collecting wheel while maintaining insulation between the power receiving electrodes Is extremely easy.

In the case of the invention described in claim 1, since it is necessary to provide the electrode pieces of the connection function part in a one-to-one relationship with respect to each power reception electrode, when the number of power reception electrodes is large, Since the structure is complicated, it is advantageous to apply to the current collecting wheel according to claim 5 in which the number of receiving electrodes is small.

According to claim 2, since the power receiving electrode functions as an electrode piece of the connection function part as it is, the structure of the connection function part becomes extremely simple, and the power reception electrode connected to the power source via the power transmission electrode, that is, a collecting train Since the receiving electrode other than the receiving electrode located on the lower side of the ring remains at the ground potential, even if another article or person comes into contact with the receiving electrode, an electrical failure such as a short-circuit accident or an electric shock accident occurs. Rarely cause serious accidents.

According to the third aspect, since a large number of power receiving electrodes are grouped into two groups via a rectifier circuit, the connection configuration of the large number of power receiving electrodes with respect to the load is simplified, and a rectifying element is always provided between the power receiving electrodes. Therefore, there is no risk of short-circuiting between the power transmitting electrodes by the power receiving electrodes, and power is not supplied from the power source to the power receiving electrodes other than the power receiving electrodes that are in contact with the power transmitting electrodes. There is almost no fear of waking up.

According to a fourth aspect of the present invention, in the configuration of the first , second, or third aspect, the power receiving electrodes of the current collecting wheel are intermittently spaced at equal intervals in the circumferential direction of the grounding surface and similarly at equal intervals in the width direction. It is what added.

In the invention according to claim 4 , since the ground planes are located on the front, rear, left and right of each power receiving electrode, the required frictional resistance between the current collecting wheel and the floor surface can be obtained with certainty. Since a large number of power receiving electrodes are in an electrically disconnected state, a selection range of electrical connection forms between the power receiving electrodes and between the power receiving electrode, the power transmitting electrode, and the load becomes wide.

According to the fifth aspect of the present invention, in the configuration of the first , second, or third aspect, each power receiving electrode of the current collecting wheel is made continuous over the entire circumference of the ground plane, and the gap in the width direction of the ground plane is set. Is added in parallel.

In the invention according to claim 5, the number of power receiving electrodes to be provided can be reduced, and the dimensions and arrangement of the plurality of power receiving electrodes can be easily set. It becomes easy.

In the invention according to claim 5 , “continuing the power receiving electrode over the entire circumference of the ground plane” does not mean that the power receiving electrode is configured in a completely closed ring shape. It may be configured in a ring shape in which a gap is formed at one place. In short, it is only necessary that the entire potential of one power receiving electrode is the same potential.

According to a sixth aspect of the present invention, in the configuration of the second aspect of the invention, the dust adhering to the ground plane on the upstream side of the location where the connection function portion is located along the movement line of the power receiving electrode located on the ground plane. The brush body which scrapes off is provided.

  In the invention of claim 6, even if dust adheres to the ground surface, the dust is scraped off by the brush body before entering between the power receiving electrode and the current collecting piece of the connection function unit. Therefore, it is possible to reliably prevent the occurrence of poor connection accidents and fire accidents due to dust adhering to the ground plane.

Since the present invention has the above-described configuration, the following effects can be obtained.
In the first , second, or third aspect of the invention, the pair of power receiving electrodes that perform the power receiving operation are arranged in such a manner that at least two of the pair are in contact with the floor surface at the same time. Therefore, the power transmission electrode always comes into contact with the same condition, and a stable power feeding operation can be always obtained.

  Since a pair of power receiving electrodes is formed by one current collecting wheel, the structure for forming the power receiving electrodes on the object on the floor becomes compact, which can facilitate the downsizing of the entire object on the floor without any trouble. A stable current collecting operation can be obtained with certainty.

In the first aspect of the present invention, since each of the power receiving electrodes is kept in an insulated state on the side of the current collecting wheel, safety against electric shock can be increased, and the electrical connection configuration is Since it becomes very simple, handling becomes easy.

In the invention described in claim 2, since the structure of the connection function portion is extremely simple, the structure of the entire current collecting wheel can be simplified, and an electrical accident such as a short circuit accident or an electric shock accident can be prevented. Since it hardly generates, high safety can be obtained.

In the invention described in claim 3, since the connection configuration to the load of a large number of power receiving electrodes is simplified, manufacturing and handling are facilitated, and there is no possibility of short-circuiting between the power transmitting electrodes at the power receiving electrodes due to the rectifying element. Since no power is supplied from the power source to the power receiving electrodes other than the power receiving electrode in contact with the power transmitting electrode, there is almost no risk of an electric shock accident and high safety can be obtained.

In the invention according to claim 4 , since it is possible to obtain an appropriate rotational movement operation of the current collecting wheel with respect to the floor surface, it is possible to obtain a stable and safe power feeding operation, and between each receiving electrode, And since the selection range of the electrical connection form of a receiving electrode, a power transmission electrode, and a load becomes wide, the connection form considered to be optimal can be easily employ | adopted according to the kind of power supply or load.

In the invention according to claim 5 , since the number of power receiving electrodes to be provided can be reduced and the size and arrangement of the plurality of power receiving electrodes can be easily set, the mechanical structure and electric power of the current collecting wheel can be reduced. A simple structure.

  In the invention according to the sixth aspect, it is possible to prevent inconvenience due to dust adhering to the ground surface in advance, thereby obtaining a safe operation.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows an example of the overall configuration of a basic embodiment of a cordless power supply system in which the present invention is implemented, and a large number of power transmission electrodes 3 are arranged on a floor surface 2 in a fixed arrangement pattern (FIG. 1). 2), each power transmission electrode 3 is connected to the underfloor wiring 10 having the power line 11 connected to the power source 13 by the selector 4 (see FIG. 3). The power supply floor 1 and the power supply floor 1 It is mounted on the floor surface 2 so as to be capable of self-propelled movement by electric power, and is configured in combination with an on-floor object 14 that is fed with the power receiving electrode 20 in contact with the power receiving electrode 20.

  The power supply floor 1 is an underfloor comprising a large number of conductive material flat plate-like power transmission electrodes 3 arranged in a fixed arrangement pattern on a floor surface 2 in a fixed arrangement, a power line 11 and a ground line 12. It is comprised from the wiring 10 and many selectors 4 which connect each power transmission electrode 3 to the underfloor wiring 10 so that interruption is possible.

  Each selector 4 includes a switching contact 5 for intermittently connecting the power transmission electrode 3 and the underfloor wiring 10, and a signal detection unit for detecting a power supply request signal transmitted from the approaching floor object 14 to the power transmission electrode 3 by the detector 8. 7 and a control circuit 9 for controlling the operation of the relay drive 6 that switches and sets the switching state of the switching contact 5 in accordance with a signal from the signal detection unit 7.

  In other words, the selector 4 has a basic operation of switching and controlling the intermittent connection of the power transmission electrode 3 to the power line 11 in accordance with the power supply request signal from the approaching floor object 14. As long as the power supply request signal is not input to 4, that is, unless the power receiving electrode 24 contacts or approaches the power transmitting electrode 3, the power line 11 is not connected to the ground potential.

  The floor object 14 traveling and moving on the floor surface 2 is composed of a main body 15, a moving wheel 16, and a current collecting wheel 17 in which a large number of power receiving electrodes 20 are arranged on a ground surface 19 which is an outer peripheral surface. A load 24, a power storage circuit 28 composed of an electric double layer capacitor and a small battery, a rectifier circuit 29 for rectifying the power to the load 24 and the power storage circuit 28 into DC power, and a power collection wheel 17 on the power transmission electrode 3. It has a power supply request signal generation unit 33 that transmits a power supply request signal when in contact or approaches, and a control device 30 that controls the movement of each component.

  The load 24 is a motor that generates a driving force for moving the object 14 on the floor, a monitoring camera, or the like. The power supplied from the power supply floor 1 to the object 14 on the floor is stored from the rectifier circuit 29. The load 24 is supplied via the circuit 28 or directly to the load 24, and the load 24 is operated. The operation of the load 24 and the supply of electric power to the load 24 are controlled by the control device 30.

  The power storage circuit 28 supplies operating power to the load 24 and the control device 30 in a state where the object 14 on the floor is electrically disconnected from the power line 11. For example, the power receiving electrode 20 is separated from the power transmitting electrode 3, In the non-powered state until the next power transmission electrode 3 is contacted, power is supplied to the load 24 by discharging to continue the traveling movement of the object 14 on the floor, and the power receiving state where the power receiving electrode 20 is in contact with the power transmission electrode 3 Sometimes it stores its own power along with the power supply to the load 24.

  The current collecting wheel 17 is a combination of a circular frame 18 such as a tire and a wheel 21 that constitutes a part to be attached to the axle 22, and a large number of power receiving electrodes 20 are provided on the ground surface 19 that is the outer peripheral surface of the circular frame 18. The grounding surface 19 on which the power receiving electrode 20 is arranged exhibits a frictional resistance so that unnecessary slip does not occur between the grounding surface 19 and the power receiving electrode 20. It has become.

  FIG. 4 is an overall perspective view showing a first structural example of the current collecting wheel 17 according to the present invention configured using a general tire as the circular frame 18, and a ground contact surface 19 which is an outer peripheral surface of the circular frame 18. A large number of power receiving electrodes 20 are intermittently arranged vertically and horizontally over the entire circumference.

  Each power receiving electrode 20 is formed of a conductive material such as a metal wire, conductive fiber, or conductive resin. As shown in FIG. 5, the power receiving electrode 20 is formed on a part of the wall portion forming the ground plane 19 of the circular frame 18. A group of conductive materials firmly assembled and fixed in a state where the wall portion is pierced is integrally connected and fixed on the inner side surface of the circular frame 18 with solder or the like.

  In the first structural example shown in FIGS. 4 and 5, since the power receiving electrodes 20 located on the ground plane 19 are separated from each other, the width along the circumferential direction of each power receiving electrode 20. By appropriately setting the dimensions, the portion of the grounding surface 19 positioned on the circumferential side of the power receiving electrode 20 that is in contact with the floor surface 2 can be brought into contact with the floor surface 2, thereby collecting the current collecting wheel 17. On the other hand, the frictional resistance required for the rotation can be reliably provided.

  FIG. 6 is an overall perspective view showing a second structural example of the current collecting wheel 17 according to the present invention configured using a general tire as the circular frame 18, and a ground contact surface 19 which is an outer peripheral surface of the circular frame 18. The four power receiving electrodes 20 are arranged in parallel over the entire circumference.

  Each power receiving electrode 20 is formed of a conductive material such as a metal wire, conductive fiber, or conductive resin similarly to the first structural example, and is formed in advance on the outer peripheral surface of the tire as shown in FIG. The circumferential wall is firmly assembled and fixed in a state where the bottom wall of the circumferential groove is protruded, and the base end protruding into the circular frame 18 is solidified with a conductive material.

  In the second structural example shown in FIGS. 6 and 7, since the number of power receiving electrodes 20 required is small, the entire structure of the current collecting wheel 17 can be simplified.

  FIG. 8 is an explanatory view showing an example of a contact state with respect to the floor surface 2 of the structure example of the current collecting wheel 17 shown in FIGS. 4 and 6, in which (A) and (B) are shown in FIG. 4. In the case of (a), the three power transmitting electrodes 3 that are in contact with the power receiving electrode 20 are divided into one and two and connected to the power line 11, and (b). In this case, the four power transmission electrodes 3 that are in contact with the power reception electrode 20 are divided into one, three, or two and two and connected to the power line 11.

  In the same figure, (c) and (d) show the case of the second structural example shown in FIG. 6, and in (c) and (d), they are in contact with the power receiving electrode 20. Since there are two power transmission electrodes 3, one of the power transmission electrodes 3 is connected to one of the power lines 11, and the other of the power transmission electrodes 3 is connected to the other of the power lines 11.

  In the configuration example shown in FIG. 8, one power receiving electrode 20 is set to a size that does not contact two adjacent power transmitting electrodes 3, but to the power line 11 of the power transmitting electrode 3. Is set for each power transmission electrode 3 according to the power supply request signal, it is not necessary to perform the above-described dimension setting for the power reception electrode 24.

  In addition, since the dimensional relationship between the power transmission electrode 3 and the power reception electrode 20 is a relationship in which a plurality of (two) power reception electrodes 20 can simultaneously contact one power transmission electrode 3, each power reception electrode 20. It is extremely disadvantageous for practical use to set the polarity of.

  On the other hand, when the dimensional relationship between the power transmission electrode 3 and the power reception electrode 20 is such that a plurality of power transmission electrodes 3 are simultaneously in contact with one power reception electrode 20, a selector 4 is provided for each power transmission electrode 3. Therefore, the polarity of each power receiving electrode 20 can be set in advance.

  FIG. 9 shows a first configuration example of the connection form of each power receiving electrode 20 to the load 24. The power receiving electrode 20 and the surface of the axle 22 rotating together with the current collecting wheel 17 are arranged along the circumferential direction. The same number of slip ring-shaped electrode pieces 23a are fixed in parallel, and at least two adjacent electrode pieces 23a are separately and simultaneously provided with two brush-like current collecting pieces 23b to form the connection function unit 23. The power receiving electrodes 20 are connected to the electrode pieces 23a in a one-to-one relationship.

  Since the current collecting pieces 23b facing the one electrode piece 23a in a one-to-one relationship are arranged in a positional relationship in which the electrode pieces 23a connected to the power receiving electrode 20 in contact with the floor surface 2 are in sliding contact with each other, When the contact form of each power receiving electrode 20 with respect to the floor surface 2 is as shown in FIG. 8A, eight current collecting pieces 23b are provided.

  FIGS. 10 to 12 show a second configuration example of the connection form of each power receiving electrode 20 to the load 24, and each power receiving electrode 20 is directly connected to each other located on the opposite side with respect to the axle 22. A brush-like current collecting piece 23b that is slidably in contact with the grounding surface 19 is provided so as to face each of the power receiving electrodes 20 that are located above the grounding surface 19 that is connected to the power receiving electrode 20 that is in contact with the floor surface 2. A functional unit 23 is configured.

  In the second configuration example, since the power receiving electrode 20 functions as the electrode piece 23a of the connection function unit 23, the configuration of the connection function unit 23 can be simplified correspondingly. In substantially the same manner as in the configuration example of FIG. 5, only the power receiving electrode 20 that is in contact with the power transmitting electrode 3 and the power receiving electrode 20 that is located on the opposite side with respect to the axle 22 are connected to the power line 11. Since all 20 remain at the ground potential, there is almost no risk of electrical accidents due to contact with other articles.

  Further, the brush body 32 that is disposed so as to be in sliding contact with the grounding surface 19 on which the power receiving electrode 20 is disposed is attached to the grounding surface 19 on the upstream side of the current collecting piece 23 b along the movement line of the power receiving electrode 20. The scraps are scraped off before the current collecting piece 23b, thereby improving the safety of the second configuration example.

  FIG. 13 shows a third configuration example of the connection form of each power receiving electrode 20 to the load 24. A pair of forward and reverse rectifier elements is connected to each power receiving electrode 20 at one terminal, and each rectifier element is connected. The other terminals of the rectifier circuit 29 are connected in common with each other in the same polarity to form a rectifier circuit 29. The rectifier circuit 29 is fixedly fixed to the axle 22 on which the current collecting wheel 17 is fixed and the output terminal of the rectifier circuit 29 is connected separately. A ring-shaped electrode piece 23a and a pair of brush-like current collecting pieces 23b that are separately slidably contacted with the electrode piece 23a are provided to constitute the connection function portion 23.

  In the third configuration example, since the common connection of the power receiving electrodes 20 is achieved through the rectifying element, the power receiving electrodes other than the power receiving electrode 20 that is in direct contact with the power transmitting electrode 3 are used. 20 is maintained in a state where it is cut off from the power source 13, thereby improving safety, and each rectifier element constitutes a rectifier circuit 29, thereby simplifying the configuration on the main body 15 side accordingly. Become.

  FIG. 14 shows an application example of the third configuration example. A motor that is the main body of the load 24, a power storage circuit 28 including a battery and a capacitor, a rectifier circuit 29, and a control device 30 are provided. The current collecting wheel 17 is rotatably assembled to the axle 22 so as to be built therein.

  As in the third configuration example shown in FIG. 13, the rectifier circuit 29 connects a pair of forward and reverse rectifier elements to each power receiving electrode 20 at one terminal, and the other terminal of each rectifier element has the same polarity. The output of the rectifier circuit 29 is supplied to a power storage circuit 28 mainly composed of a capacitor, and the output of the power stored in the power storage circuit 28 is controlled by the control device 30. .

  The motor that is the main body of the load 24 includes a rotor 27 fixed to the outside of the two wheels 21 of the current collecting wheel 17 and a stator 26 fixed to the axle 22 so as to face each of the rotors 27. The in-wheel motor is driven by the output of the power storage circuit 28 controlled by the control device 30.

  Further, the power supply to the main body 15 side provided with the load 24 such as a monitoring device or a detection device is performed by a brush piece-like electrode piece 23 a provided on the current collecting wheel 17 side and a slip ring shape fixed to the axle 22. This is performed after the power of the power storage circuit 28 is controlled by the control device 30 through the connection function unit 23 configured with the current collecting piece 23b.

  Further, the control device 30 does not allow excessive current to flow for selection of switching between charging and discharging of a plurality of capacitors of the storage circuit 28, stabilization of the charging voltage of the capacitors, and power feeding from the power transmission electrode 3. Constant current control is performed for the purpose.

  In this application example, since the in-wheel motor is configured as the main part of the load 24 in the current collecting wheel 17, the current collecting wheel 17 can function as a driving wheel that is one of the traveling wheels 16. In addition, the supplied electric power can be converted into traveling driving force very efficiently.

  Further, since the load 24 on the main body 15 side can be operated with extremely small power, such as a monitoring device, a detection device, and a power supply request signal generation unit 33, the connection function unit 23 is more effective than power transmission. It is highly likely that control signals and detection signals will be mainly transmitted and received. In particular, when the main body 15 is provided with a small battery or a solar cell as a power source, no power supply from the current collecting wheel 17 to the main body 15 is required. It becomes.

  FIG. 15 shows a second application example of the third configuration example, and wirelessly transmits signals to the connection function unit 23 under the condition that power supply from the current collecting wheel 17 to the main body 15 is unnecessary. The transmitter / receiver 31 is configured.

  The transmission / reception device 31 is provided on each of the main body 15 side and the current collecting wheel 17 side. Both the transmission / reception devices 31 have a light emitting element and a light receiving element, and the transmission / reception device 31 on the current collecting wheel 17 side has a wheel 21. A plurality of light-emitting elements and light-receiving elements that face the light-emitting elements and light-receiving elements of the transmitting / receiving device 31 on the main body 15 side through the plurality of through-holes established in FIG.

  The transmission / reception device 31 as the connection function unit 23 shown in FIG. 15 can send and receive signals, but cannot send or receive large power. Therefore, the main body 15 can be a small battery, a solar cell, or a fuel cell. It is necessary to have a dedicated power source.

  Further, the transmission / reception device 31 is not limited to “light” as a signal transmission / reception means, and may be “radio waves” or “electromagnetic waves”.

  Furthermore, since the transmission / reception device 31 that can achieve signal transmission and reception without contact is used as the connection function unit 23 without using a sliding contact structure, there is almost no mechanical failure, and connection High reliability is exhibited as the functional unit 23.

  In addition, the current collection wheel 17 attached to the floor object 14 is not limited to one, You may provide two or three multiple, In this case, each current collection wheel 17 is electrically connected in parallel. If the contact of the current collecting wheel 17 to the floor surface 2 is ensured, the power supply to the on-floor object 14 can be ensured. For example, the current collecting wheel 17 is collected due to distortion of the floor surface 2 or the inclination of the on-floor object 14. Even if the contact of the electric wheel 17 with the floor 2 is likely to be poor, if the contact of any one of the current collecting wheels 17 with the floor 2 is achieved, the power supply to the object 14 on the floor can be ensured. .

1 is an overall configuration example diagram showing a basic configuration example of a cordless power transmission system implementing the present invention. It is an external appearance perspective view of a power supply floor showing an example of composition of a power supply floor of a system in which the present invention is used. It is a description perspective view which shows the structural example of the combination of a power transmission electrode, a selector, and underfloor wiring. It is an external appearance perspective view of the 1st Example of the current collection wheel attached to the object on the floor of this invention. It is a principal part half vertical cross-sectional enlarged view of the Example shown in FIG. It is an external appearance perspective view of the 2nd Example of the current collection wheel attached to the object on the floor of this invention. FIG. 7 is an enlarged view of a main part half longitudinally of the embodiment shown in FIG. 6. It is explanatory drawing of the grounding form of the Example shown in FIG.4 and FIG.6. It is explanatory drawing of the electrical connection which shows the 1st structural example of the connection form to the load of the receiving electrode in this invention. It is explanatory drawing of the electrical connection which shows the 2nd structural example of the connection form to the load of the receiving electrode in this invention. It is a side view of the structural example shown in FIG. It is a front external view of the structural example shown in FIG. It is explanatory drawing of the electrical connection which shows the 3rd structural example of the connection form to the load of the receiving electrode in this invention. It is explanatory drawing of electrical connection which shows the application example of the 3rd structural example shown in FIG. It is explanatory drawing of an electrical connection which shows the 2nd application example of the 3rd structural example shown in FIG.

DESCRIPTION OF SYMBOLS 1; Power supply floor 2; Floor surface 3; Power transmission electrode 4; Selector 5; Switching contact 6; Relay drive 7; Signal detection part 8; Detector 9; Control circuit 10: Underfloor wiring 11; Power line 12; Power source 14; Object on floor 15; Main body 16; Moving wheel 17; Current collecting wheel 18; Circular frame 19; Ground plane 20; Power receiving electrode 21; Wheel 22; Axle 23; Connection function part 23a; Load 25; In-wheel motor 26; Stator 27; Rotor 28; Power storage circuit 29; Rectifier circuit 30; Control device 31; Transmission / reception device 32; Brush body 33;

Claims (6)

A large number of power transmission electrodes (3) are arranged on the floor surface (2) in a regular arrangement pattern in a matrix arrangement at regular intervals, and an underfloor wiring (10) having at least a power line (11) is provided. (3) is connected to the underfloor wiring (10), and the distance between the power transmission electrodes (3) is set to a pair of power receiving electrodes (20) provided on the object on the floor (14) located on the floor surface (2). On the other hand, from the power supply floor (1) set to a value at which the separated power transmission electrodes (3) are in contact with each other at the same time, a power storage circuit (28) for storing power and a load (24) for consuming power are provided. A power collecting wheel (17) for cordless power transmission for supplying power to an object (14) on the floor that is self-propelled on the floor (2), and is unnecessary between the floor (2) It is an outer peripheral surface of the circular frame (18) having a frictional resistance that does not cause smooth sliding A plurality of power receiving electrodes (20) are arranged on a part of the ground (19) so that at least two pairs of power receiving electrodes (20) are in contact with the floor surface (2) at the same time. (20) is connected to at least the power storage circuit (28), the power receiving electrodes (20) are individually electrically independent, and the body (15) of the object on the floor (14) and the current collecting wheel (17) are electrically connected. Connected to each receiving electrode (20) in a one-to-one manner, and an electrode piece (23a) that is insulated from each other and fixed to the axle (22), and the electrode piece A current collecting wheel for cordless power transmission composed of a current collecting piece (23b) slidably contacting one-to-one with (23a) . A large number of power transmission electrodes (3) are arranged on the floor surface (2) in a regular arrangement pattern in a matrix arrangement at regular intervals, and an underfloor wiring (10) having at least a power line (11) is provided. (3) is connected to the underfloor wiring (10), and the distance between the power transmission electrodes (3) is set to a pair of power receiving electrodes (20) provided on the object on the floor (14) located on the floor surface (2). On the other hand, from the power supply floor (1) set to a value at which the separated power transmission electrodes (3) are in contact with each other at the same time, a power storage circuit (28) for storing power and a load (24) for consuming power are provided. A power collecting wheel (17) for cordless power transmission for supplying power to an object (14) on the floor that is self-propelled on the floor (2), and is unnecessary between the floor (2) It is an outer peripheral surface of the circular frame (18) having a frictional resistance that does not cause smooth sliding A plurality of power receiving electrodes (20) are arranged on a part of the ground (19) so that at least two pairs of power receiving electrodes (20) are in contact with the floor surface (2) at the same time. (20) is connected to at least the power storage circuit (28), the power receiving electrodes (20) are connected to each other located on the substantially opposite side with respect to the axle (22), and the main body (15) and the collecting wheel (17 The power receiving electrode located on the grounding surface (19) portion opposite to the portion in contact with the floor surface (2) with respect to the axle (22). A current collecting wheel for cordless power transmission, which is constituted by a current collecting piece (23b) which is in sliding contact with (20). A large number of power transmission electrodes (3) are arranged on the floor surface (2) in a regular arrangement pattern in a matrix arrangement at regular intervals, and an underfloor wiring (10) having at least a power line (11) is provided. (3) is connected to the underfloor wiring (10), and the distance between the power transmission electrodes (3) is set to a pair of power receiving electrodes (20) provided on the object on the floor (14) located on the floor surface (2). On the other hand, from the power supply floor (1) set to a value at which the separated power transmission electrodes (3) are in contact with each other at the same time, a power storage circuit (28) for storing power and a load (24) for consuming power are provided. A power collecting wheel (17) for cordless power transmission for supplying power to an object (14) on the floor that is self-propelled on the floor (2), and is unnecessary between the floor (2) It is an outer peripheral surface of the circular frame (18) having a frictional resistance that does not cause smooth sliding A plurality of power receiving electrodes (20) are arranged on a part of the ground (19) so that at least two pairs of power receiving electrodes (20) are in contact with the floor surface (2) at the same time. (20) is connected to at least the power storage circuit (28), and a pair of forward and reverse rectifier elements is connected to each of the power receiving electrodes (20) at one terminal, and the other terminal of each rectifier element is shared by the same polarity. A connection function part (23) for connecting the main body (15) of the object on the floor (14) and the current collecting wheel (17) to form a rectifier circuit (29) is connected to the current collecting wheel ( 17) A pair of electrode pieces (23a) fixed to an axle (22) which is fixedly fixed and to which the output terminals of the rectifier circuit (29) are separately connected, and separately slid onto the electrode pieces (23a). A current collecting wheel for cordless power transmission, which is configured by providing a pair of current collecting pieces (23b) in contact with each other. The power collecting wheel for cordless power transmission according to claim 1 , 2 or 3, wherein each power receiving electrode (20) is intermittently arranged at equal intervals in the circumferential direction of the ground plane (19) and also at equal intervals in the width direction. . Each power receiving electrode (20), causes continuous over the entire periphery of the ground surface (19) of claim 1, 2 or 3, wherein arranged in parallel in the width direction at an interval of the ground plane (19) Current collecting wheel for cordless power transmission. A brush body that scrapes off dust adhering to the grounding surface (19) on the upstream side of the location where the connection function part (23) is located along the movement line of the power receiving electrode (20) located on the grounding surface (19). The current collection wheel for cordless electric power transmission according to claim 2 provided with (32).

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