JP2005312181A - Current-collecting wheel for cordless power transmission - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve the contact of a current collector (power receiving electrodes) to an electrode board (power transmitting electrode) arranged on the floor by rotational contact thereby smoothly and surely achieving the contact and break of the power receiving electrode to the power transmitting electrode, without scraping up dust on a floor and without getting caught in the ruggedness of the floor. <P>SOLUTION: The contact and break of the power receiving electrode 24 of an on-floor object 14 to the power transmitting electrode 3 of a power supplying floor 1, where the power transmitting electrodes 3 provided in multistage on a floor 2 can be switched individually to under-floor wiring 10 by selectors 4, and the selectors 4 connect the power transmitting electrodes 3 to a power line 11, according to power demand signals given from the on-floor object 14, is achieved by the rotational shift of a power-collecting wheel 25 to the floor 2, thereby obtaining the safe and secure contact and break action of the power-receiving electrode 24 to the power transmitting electrode 3. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a current collecting wheel for cordless power transmission, in which an object on the floor, which is a self-propelled electric product 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 product 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 simultaneously contact two electrode plates of different polarities. A configuration is disclosed in which power can be supplied to an electrical product in a cordless manner.
JP 09-028922 A

  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.

Of the present invention for solving the above technical problem, the configuration of the invention according to claim 1 is:
A large number of power transmission electrodes are arranged on the floor, at least under-floor wiring having power lines is provided, a selector for connecting the power transmission electrodes and the under-floor wiring in an individually switchable manner is provided, and the interval between each power transmission electrode is For the pair of receiving electrodes provided on the object located on the floor, set the value so that the remote transmitting electrodes are in contact with each other separately and simultaneously, and the selector is separated from the object on the floor by the contact or approach between the transmitting electrode and the receiving electrode. In accordance with the supplied power supply request signal, the built-in switching contact is switched to connect the power transmitting electrode that is in contact with or close to the power receiving electrode to the power line. Being a current collecting wheel for the cordless power transmission to be supplied,
A plurality of power receiving electrode pieces are arranged on a part of the ground contact surface, which is a wheel outer peripheral surface having a frictional resistance that does not cause slippage, between the floor surface and at least one of them in contact with the floor surface. Installation,
Each receiving electrode piece is connected to the main body side of the object on the floor via the connection function unit to constitute one receiving electrode,
It is in.

  In the invention of claim 1, each power transmission electrode is not connected to a power line unless an object on the floor is positioned on the floor surface, the power receiving electrode is brought into contact with or approached, and a power supply request signal is transmitted. Therefore, even if an object other than an object on the floor is placed on the floor surface and brought into contact with the floor surface, it does not cause an electric leakage or a short circuit.

  Since each power transmission electrode is set to a value at which the distance between the power transmission electrodes separately and simultaneously with respect to the pair of power reception electrodes of the object on the floor, the pair of power transmission electrodes and power reception electrodes must be One-to-one contact is made at the same time, and reliable power supply to the object on the floor is achieved.

  A current collecting wheel constituting one power receiving electrode has a slip between a ground surface, which is a wheel outer peripheral surface in which a plurality of power receiving electrode pieces are arranged over the entire circumference, and a floor surface. Since it has a frictional resistance not to be generated, when an object on the floor travels on the floor surface, it always rotates and moves without sliding on the floor surface.

  The plurality of power receiving electrode pieces are arranged in a form that always contacts the floor surface over the entire circumference of the grounding surface of the current collecting wheel, and each power receiving electrode piece is connected via the connection function unit. Since it is connected to the main body side of the object on the floor, when the current collecting wheel that constitutes the receiving electrode is positioned on the power transmission electrode on the floor, the connection between the object on the floor and the power transmission electrode is always achieved, and the power supply to the object on the floor is achieved. Is reliably achieved.

  Since one current collecting wheel constitutes one power receiving electrode by a plurality of power receiving electrode pieces, even if adjacent power receiving electrode pieces simultaneously contact one power transmitting electrode, an electrical short circuit accident occurs. Therefore, the configuration of the power receiving electrode piece is simplified accordingly.

  Since one current collecting wheel constitutes one power receiving electrode, the distance between the pair of power receiving electrodes provided on the object on the floor can be freely set without being restricted by the size of the current collecting wheel. Thus, the configuration and arrangement of the power transmission electrode are facilitated.

  According to the second aspect of the present invention, in the configuration of the first aspect, a large number of power receiving electrode pieces are intermittently arranged at substantially equal intervals in at least the circumferential direction in the circumferential direction and the width direction of the ground plane. , Plus.

  In the invention according to claim 2, since the ground plane is located before and after each receiving electrode piece, it is easy to obtain the required frictional resistance between the collecting wheel and the floor surface, and a large number of receiving electrodes. Since the pieces are electrically cut off at least along the circumferential direction, there is a wide selection range of the electrical connection form between the receiving electrode pieces and between the receiving electrode piece and the transmitting electrode and the main body of the object on the floor. It will be a thing.

  The invention described in claim 3 corresponds to the configuration of the invention described in claim 2 by commonly connecting power receiving electrode pieces that are simultaneously in contact with the floor surface, and individually corresponding to each group of power receiving electrode pieces commonly connected. In addition, the configuration includes an electrode piece arranged in parallel and a current collecting piece arranged immovably and in sliding contact with the electrode piece.

  In the invention according to claim 3, the receiving electrode piece group connected to the power source through the transmitting electrode, that is, the receiving electrode piece group other than the receiving electrode piece group located on the lower side of the collecting wheel, Since the potential remains at the ground potential, even if another article or person comes into contact with the group of receiving electrode pieces, an electrical accident such as a short circuit accident or an electric shock accident hardly occurs.

  The invention according to claim 4 is the configuration of the invention according to claim 2, wherein the power receiving electrode pieces that are simultaneously in contact with the floor surface are commonly connected, and the commonly connected power receiving electrode piece group is positioned on the substantially opposite side with respect to the axle. What is to be connected to each other, and the connection function part is configured by a current collecting piece that is in sliding contact with the grounding surface part opposite to the part in contact with the floor surface with respect to the axle.

  In the invention according to claim 4, the power receiving electrode piece group other than the power receiving electrode piece group in contact with the power transmitting electrode and the power receiving electrode piece group connected to the power receiving electrode piece group remains at the ground potential. There is almost no risk of an electrical accident, and the receiving electrode piece group connected to the receiving electrode piece group in contact with the transmitting electrode functions as the electrode piece of the connection function part. The configuration of the functional unit is simplified.

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

  In the invention of claim 5, even if dust adheres to the ground surface, the dust is scraped with a brush body before entering between the power receiving electrode piece and the current collecting piece of the connection function portion. Since it will drop, it will reliably prevent the occurrence of poor connection accidents and fire accidents due to dust adhering to the ground plane.

  According to a sixth aspect of the present invention, in the configuration of the first aspect of the invention, a plurality of power receiving electrode pieces that are continuous over the entire circumference of the ground plane are arranged in parallel at intervals in the width direction of the ground plane. The power receiving electrode pieces are connected in common and connected to the connection function unit.

  In the invention of claim 6, the number of receiving electrode pieces to be provided can be reduced, and the dimensions and arrangement of the plurality of receiving electrode pieces can be easily set. Manufacturing is easy.

  The invention described in claim 7 has the configuration of the invention described in claim 1, 2, 3, 4, 5 or 6 also serving as a moving wheel that functions for driving or steering the object on the floor and for traveling. Is added.

  In the invention according to claim 7, current collecting is required for a moving wheel that is required for traveling and performs the same rotational operation without providing a dedicated collecting wheel that functions only for collecting current. Since the function is added, the configuration of the object on the floor is simplified accordingly.

Since the present invention is configured as described above, the following effects are obtained.
In the invention according to claim 1, each power transmission electrode is equally ground potential except when power is supplied to the object on the floor. In addition, no short circuit is caused, and the two power transmission electrodes are not short-circuited by the power receiving electrode. Furthermore, no electric shock is caused even if a person touches, and extremely high safety is stably exhibited.

  Since the pair of power transmission electrodes and power reception electrodes are always in one-on-one contact, power feeding from the power supply floor to the object on the floor can be stably and reliably achieved.

  The current collecting wheel that constitutes one receiving electrode always rotates without slipping according to the moving movement of the object on the floor, so even if there is dust on the floor, it will be scraped and attached. Thus, a stable and reliable contact operation with respect to the power transmission electrode is exhibited.

  Since the electrical connection between the power transmission electrode and the object on the floor is always achieved when the current collecting wheel is located on the power transmission electrode, the power supply from the power supply floor to the object on the floor is reliably achieved, thereby stabilizing the object on the floor. Operation can be obtained.

  Since one current collecting wheel having a large number of power receiving electrode pieces constitutes one power receiving electrode, there is no possibility that the power receiving electrode pieces in one current collecting wheel will cause a short circuit accident. A sufficient margin can be obtained for the restrictions on the dimension setting and arrangement dimension setting of the power transmission electrode, and the degree of freedom in designing the power transmission electrode and the power receiving electrode piece can be increased.

  In the invention according to claim 2, since it is easy to obtain the required frictional resistance between the current collecting wheel and the floor surface, it is possible to obtain an appropriate rotational operation of the current collecting wheel, thereby A safe connection with the receiving electrode can be obtained, and the range of electrical connection between the receiving electrode pieces and between the receiving electrode piece, the transmitting electrode, and the main body of the object on the floor is wide. It is easy to implement an electrical connection form that can exhibit the above.

  In the invention according to claim 3, since the power receiving electrode piece group other than the power receiving electrode piece group located below the current collecting wheel that is in direct contact with the power transmitting electrode remains at the ground potential, There is almost no electrical accident such as a short circuit accident or an electric shock accident due to contact with goods and a person, and this makes it possible to easily obtain high safety.

  In the invention according to claim 4, since the receiving electrode piece group other than the receiving electrode piece group in contact with the transmitting electrode and the receiving electrode piece group connected thereto remains at the ground potential, an electrical accident occurs. Therefore, it is possible to obtain high safety, and the power receiving electrode piece itself can function as the electrode piece of the connection function part, thereby simplifying the configuration of the connection function part. Therefore, the simplification of the whole structure can be obtained.

  In the invention according to the fifth aspect, it is possible to prevent the occurrence of inconvenience due to dust adhering to the grounding surface in advance, and thus safe operation can be obtained.

  In the invention described in claim 6, since it is possible to reduce the number of power receiving electrode pieces to be provided and the size setting and arrangement setting of the power receiving electrode pieces are easy, the collection train constituting the power receiving electrode The ring itself can be easily manufactured.

  In the invention of claim 7, by providing a power collecting function to the moving wheel, a wheel dedicated to current collection is not required, and accordingly, the structure of the object on the floor can be simplified, Since no dedicated wheels for current collection are used as a load for the traveling movement operation of the object on the floor, the smooth traveling operation of the object on the floor can be obtained accordingly.

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. Each power transmission electrode 3 is connected by power to the power supply floor 1 connected to the underfloor wiring 10 having the power line 11 connected to the power source 13 by the selector 4 and the floor surface 2 of the power supply floor 1 by power. It is mounted in a movable manner, and is configured in combination with an object 14 on the floor that is fed with the power receiving electrode 24 in contact with the power receiving electrode 24.

  The power supply floor 1 has a large number of conductive material plate-like power transmission electrodes 3 (see FIG. 6) provided in a fixed arrangement pattern in a matrix arrangement at fixed intervals on the floor surface 2, a power line 11 and a ground line. 12 and a number of selectors 4 that connect each power transmission electrode 3 to the underfloor wiring 10 in an intermittent manner.

  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 7 for detecting a power supply request signal transmitted from the object 14 on the floor to the power transmission electrode 3 with the detector 8. The control circuit 9 controls the operation of the relay drive 6 that switches and sets the switching state of the switching contact 5 in accordance with the signal from the signal detection unit 7.

  That is, 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 object 14 on the floor. Unless the power supply request signal is input, that is, unless the power receiving electrode 24 is in contact with or close to the power transmitting electrode 3, the power line 11 is not connected and is at the ground potential.

  The object on the floor 14 is supplied with power from a main body 15 that travels on the floor surface 2 by moving wheels 31, a load 16 including a motor, a power storage circuit 17 including an electric double layer capacitor and a small battery, and a power supply floor 1. Power receiving electrode 24 for receiving power, collecting wheel 25 provided to be able to rotate on floor surface 2 so as to be able to contact power transmitting electrode 3, sensor 20 for detecting power transmitting electrode 3, and each component And a control device 19 for controlling the movement of the camera.

  Two current collecting wheels 25 constituting the power receiving electrode 24 according to the present invention are provided on the lower surface of the main body 15 so as to be in contact with two separated power transmitting electrodes 3 separately and simultaneously.

  The load 16 and the power storage circuit 17 are connected in parallel between the two power collection wheels 25, and a rectifier circuit 18 is provided between the parallel circuit of the load 16 and the power storage circuit 17 and the power collection wheel 25. Is provided.

  In addition, a power supply request signal generating circuit 21 that transmits a power supply request signal to the selector 4 when the current collector wheel 25 contacts or approaches the power transmission electrode 3 is provided between the power collection wheels 25. In the case of the illustrated embodiment, the generation circuit 21 has a series circuit of a signal capacitor 22 and a signal rectifier 23 as a basic component, and outputs the stored charge of the signal capacitor 22 as a power supply request signal when necessary. ing.

  A sensor 20 that detects the position of the power transmission electrode 3 by an image signal or the like is attached to the front surface of the main body 15.

  The control device 19 controls all of the operation of the load 16 including the motor, the power supply operation of the power storage circuit 17 to the load 16, the signal generation operation of the power supply request signal generation circuit 21, and the power transmission electrode detection operation of the sensor 20. Has been.

  The detection signal of the sensor 20 is arithmetically processed as a position signal by the control device 19 to directly calculate the direction and distance with respect to the power transmission electrode 3 and determine the position of the target power transmission electrode 3 or the power transmission electrode 3. The created array pattern of the power transmission electrode 3 is compared with the previously recorded array pattern, and the current collecting electrode 25 for contacting the current collecting wheel 25 as the power receiving electrode 24 is contacted. Predict the position.

  FIG. 2 is an overall perspective view showing a first embodiment of the current collecting wheel 25 according to the present invention configured using a general tire, and covers the entire circumference of the ground contact surface 26 which is the outer peripheral surface of the tire. A large number of power receiving electrode pieces 27 are intermittently arranged vertically and horizontally.

  Each of the power receiving electrode pieces 27 is formed of a conductive material such as a metal wire, conductive fiber, or conductive resin. As shown in FIG. 3, the wall is formed on a part of the wall portion that forms the ground contact surface 26 of the tire. The base ends of the power receiving electrode pieces 27 arranged in the width direction are integrally joined with a conductive material, and are arranged in the width direction. The power receiving electrode pieces 27 are connected in common.

  In the embodiment shown in FIGS. 2 and 3, the power receiving electrode pieces 27 positioned on the ground surface 26 are separated from each other. Therefore, the width dimension along the circumferential direction of each power receiving electrode piece 27. Is appropriately set, the ground surface 26 portion positioned on the circumferential side of the power receiving electrode piece 27 that is in contact with the floor surface 2 can always be brought into contact with the floor surface 2, thereby collecting the current collecting wheel 25. On the other hand, the frictional resistance required for the rotation can be reliably provided.

  FIG. 4 is an overall perspective view showing a second embodiment of the current collecting wheel 25 according to the present invention configured by using a general tire, and covers the entire circumference of the ground contact surface 26 which is the outer peripheral surface of the tire. The three receiving electrode pieces 27 are arranged in parallel.

  Each power receiving electrode piece 27 is formed of a conductive material such as a metal wire, conductive fiber, or conductive resin similarly to the first embodiment, and is formed in advance on the outer peripheral surface of the tire as shown in FIG. Are firmly assembled and fixed to the circumferential groove with the bottom wall of the circumferential groove protruding, and the base end protruding into the tire is integrally coupled with a conductive material so that each receiving electrode piece 27 is shared. Connected.

  In the embodiment shown in FIGS. 4 and 5, since the number of receiving electrode pieces 27 required is small, the entire structure of the current collecting wheel 25 can be simplified.

  6 is an explanatory view showing an example of a contact state with respect to the floor surface 2 in the embodiment shown in FIGS. 2 and 4, and (a), (b), (c) and (d) in FIG. (B) and (c) show the state in which the power receiving electrode 24 formed by the current collecting wheel 25 is connected to the power transmitting electrode 3, and (b) and (c) (D) shows a state in which the power receiving electrode 24 is not connected to the power transmitting electrode 3. Similarly, (e), (f), (g) and (h) in FIG. (E) and (g) show the state where the power receiving electrode 24 formed by the current collecting wheel 25 is connected to the power transmitting electrode 3, and (f) and (h) A state where the power receiving electrode 24 is not connected to the power transmitting electrode 3 is shown.

  In the embodiment shown in FIG. 6, the power receiving electrode 24 formed by one current collecting wheel 25 is set to a size that does not contact the two adjacent power transmitting electrodes 3, When the connection of the power transmission electrode 3 to the power line 11 is set for each power transmission electrode 3 according to the power supply request signal, it is not necessary to perform the above dimension setting for the power reception electrode 24.

  FIG. 7 shows a first configuration example of the entire current collecting wheel 25 functioning as the power receiving electrode 24 in which all the power receiving electrode pieces 27 are connected together, and is provided on the current collecting wheel 25 having a tire structure. The power receiving electrode pieces 27 connected in common are connected to an electrode piece 29a having a slip ring structure of a connection function part 29 fixed to the axle 28 of the current collecting wheel 25, and the connection function part 29 is connected to the electrode piece 29a. By connecting the current collecting piece 29b in sliding contact, the connection between the power receiving electrode 24 formed by the current collecting wheel 25 and the main body 15 via the connection function unit 29 is achieved.

  FIG. 8 shows a current collecting wheel functioning as a power receiving electrode 24 in which a large number of power receiving electrode pieces 27 are intermittently arranged in the circumferential direction and the width direction at substantially equal intervals, and the power receiving electrode pieces 27 arranged in the width direction are connected in common. 25 shows a first structural example of the second configuration example of the entire 25, and the commonly connected power receiving electrode piece 27 group is arranged in parallel on the outer peripheral surface of the axle 28 at equal intervals along the circumferential direction for each group. The electrode piece 29b is individually connected to the electrode piece 29b, and the electrode piece 29b is combined with the electrode piece 29b to form the connection function unit 29. The electrode piece 29b is movably disposed at a position in sliding contact with the connected electrode piece 29b.

  In the first structural example of the second configuration example, only the power receiving electrode piece 27 group that is in direct contact with the power transmission electrode 3 is connected to the power line 11 via the power transmission electrode 3. Since the power receiving electrode piece 27 that is exposed from the floor surface 2 without being in contact with the floor surface 2 remains at the ground potential, there is no possibility that an electrical accident may occur due to contact with other articles. Absent.

  FIG. 9 shows a second structural example of the second configuration example of the current collecting wheel 25 as a whole. The commonly connected receiving electrode piece 27 group is a receiving electrode piece 27 group located on the opposite side with respect to the axle 28. A current collecting piece 29 a that is connected and faces the upper side of the grounding surface 26 of the current collecting wheel 25 and is in sliding contact with the grounding surface 26 is disposed immovably.

  In the second structural example of the second configuration example, the current collecting piece 29a is connected to the power receiving electrode piece 27 group in contact with the power transmitting electrode 3 by being positioned below the current collecting wheel 25. In addition, since the power receiving electrode piece 27 group on the opposite side is in sliding contact with the opposite side, the power receiving electrode piece 27 group on the opposite side functions as the electrode piece 29b of the connection function unit 29.

  Therefore, the configuration of the connection function part 29 can be simplified, and the power receiving electrode piece 27 group in contact with the power transmitting electrode 3 is connected to the power line 11 in substantially the same manner as in the first structure example. There are only two receiving electrode pieces 27 group located on the opposite side with respect to the axle 28, and all of the other receiving electrode piece 27 groups remain at the ground potential. There is little risk of an accident.

  In the embodiment shown in FIG. 9, it is fixed so as to be in sliding contact with the ground surface 26 on which the power receiving electrode piece 27 is arranged on the upstream side of the current collecting piece 29 a along the moving line of the power receiving electrode piece 27 group. The arranged brush body 30 scrapes dust adhering to the grounding surface 26 in front of the current collecting piece 29a, thereby improving the safety of the second structural example of the second configuration example.

  FIG. 10 shows an electrical connection form between the main body 15 of the object 14 on the floor and the current collecting wheel 25, and each of the power receiving electrode pieces 27 is connected as a whole or after being commonly connected for each group, as it is. And is connected to the main body 15 side.

  In this case, since the power supplied to the object 14 on the floor is supplied as it is from the power source 13, the main body 15 is provided with a rectifier circuit 18 for allowing this power to be stored in the power storage circuit 17. It has been.

  In the case of the configuration example shown in FIG. 10, when the power receiving electrode 24 contacts the power transmitting electrode 3, the electric charge stored in the signal capacitor 22 of the power supply request signal generation circuit 21 is used as the power supply request signal. The power is transmitted from the power transmission electrode 3 to the selector 4, whereby the selector 4 switches and connects the switching contact 5 to the power line 11 and connects the power transmission electrode 3 to the power line 11 to achieve power supply to the object 14 on the floor. Is done.

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 the 1st Example using the tire of the present invention. It is a principal part longitudinal cross-sectional view of the Example shown in FIG. It is an external appearance perspective view of the 2nd Example using the tire of this invention. It is a principal part longitudinal cross-sectional half sectional view of the Example shown in FIG. It is explanatory drawing of the grounding form of the Example shown in FIG.2 and FIG.4. It is explanatory drawing of electrical connection which shows the 1st structural example of this invention. It is explanatory drawing of the connection which shows the 1st structural example of the 2nd structural example of this invention. It is explanatory drawing of the connection which shows the 2nd structural example of the 2nd structural example of this invention. It is explanatory drawing which shows the connection of a current collection wheel and an object body on a floor.

Explanation of symbols

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 supply 14; Floor object 15; Body 16; Load 17; Power storage circuit 18; Rectification circuit 19; Control device 20; Sensor 21; Power supply request signal generation circuit 22; Signal capacitor 23; Signal rectifier 24; Power receiving electrode 25; Electric wheel 26; Grounding surface 27; Receiving electrode piece 28; Axle 29; Connection function part 29a; Current collecting piece 29b; Electrode piece 30; Brush body 31;

Claims (7)

  A large number of power transmission electrodes (3) are arranged on the floor (2), and an underfloor wiring (10) having at least a power line (11) is provided.The power transmission electrode (3) and the underfloor wiring (10) are individually provided. A selector (4) that is switchably connected is provided, and the distance between the power transmission electrodes (3) is set to a pair of power reception electrodes (24) provided on an object on the floor (14) located on the floor surface (2). And set the selector (4) on the floor by contacting or approaching the power transmitting electrode (3) and the power receiving electrode (24). According to the power supply request signal given from the object (14), the built-in switching contact (5) is switched to connect the power transmission electrode (3) in contact with or close to the power receiving electrode (24) to the power line (11). A power collecting wheel (25) for cordless power transmission for supplying power from a power supply floor (1) to a floor object (14) that is self-propelled on the floor (2), (2), at least one of the plurality of power receiving electrode pieces (27) over the entire circumference on a part of the ground surface (26) that is a wheel outer peripheral surface having a frictional resistance that does not cause slippage. The power receiving electrode pieces (27) are arranged in contact with the floor surface (2), and are connected to the main body (15) side of the object on the floor (14) via the connection function part (29). Current collecting wheel for cordless power transmission that constitutes one receiving electrode (24).   The collection for cordless power transmission according to claim 1, wherein a number of power receiving electrode pieces (27) are intermittently arranged at substantially equal intervals in at least the circumferential direction of the ground surface (26). Electric wheel.   Power receiving electrode pieces (27) that are simultaneously in contact with the floor (2) are connected in common, and the connection function section (29) is individually connected in parallel for each of the commonly connected power receiving electrode pieces (27) groups. The current collecting wheel for cordless power transmission according to claim 2, comprising an electrode piece (29b) arranged and a current collecting piece (29a) which is arranged immovably and is in sliding contact with the electrode piece (29b).   The power receiving electrode pieces (27) that are simultaneously in contact with the floor (2) are connected in common, and the power receiving electrode pieces (27) group of the commonly connected power supply electrode pieces (27) are connected to each other on the opposite side with respect to the axle (28) The connection function part (29) is constituted by a current collecting piece (29a) that is in sliding contact with the grounding surface (26) portion on the opposite side to the portion in contact with the floor surface (2) with respect to the axle (28). The current collecting wheel for cordless power transmission according to claim 2.   A brush body that scrapes off dust adhering to the grounding surface (26) on the upstream side of the location of the connection function part (29) along the movement line of the power receiving electrode piece (27) located on the grounding surface (26). The current collecting wheel for cordless power transmission according to claim 4, wherein (30) is provided.   A plurality of receiving electrode pieces (27) that are continuous over the entire circumference of the ground plane (26) are arranged in parallel at intervals in the width direction of the ground plane (26), and each receiving electrode piece (27 The current collecting wheels for cordless power transmission according to claim 1, which are connected in common to the connection function unit (29).   7. A collection train for cordless power transmission as claimed in claim 1, which also serves as a moving wheel (31) for driving or steering an object on the floor (14) and also for traveling. ring.