JP2006287988A - Pickup unit and contactless power supply facility equipped with pickup unit - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a pickup unit which can increase electromotive force induced in a coil. <P>SOLUTION: A pickup unit P is equipped with a core body 20 which is S-shaped, with each recess 23 and 24 of an upper ferrite core 21 and a lower ferrite core 28 made in U form being adjoined with each other in mutually reversed state, and in which a pair of inductive lines 11 are arranged in positions deeper than the center of each recess 23 and 24, and a pickup coil 22 which is wound at the center of the core body 20 and where electromotive force is induced by a pair of inductive lines 11. According to this constitution, magnetic flux interlinked with each pickup coil 22 increases as compared with the case where a coil body E-shaped in the same dimensions is used, so it generates large electromotive force in each pickup coil 22. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a contactless power supply facility.

An example of a pickup unit in a conventional non-contact power supply facility is disclosed in Patent Document 1, for example.
The non-contact power feeding facility disclosed in Patent Document 1 includes an induction line unit in which an induction line that allows a high-frequency current to flow along a moving line of a moving body, an E-shaped core, and a coil wound around the core. A pickup unit that is rotated and is fed in a contactless manner from the induction line, and that is provided on the moving body facing the induction line unit, and a capacitor that forms a resonance circuit is connected to the pickup coil. A rectification and smoothing circuit is connected to the capacitor, and further connected to a load via a DC voltage stabilizing circuit, and the load is fed in a contactless manner to the induction line.
Japanese Patent Laid-Open No. 2001-19120

  However, according to the conventional configuration described above, since there is a limit on the allowable current value for the current that can be passed through one induction line, there is a limit to the electromotive force that is induced in the pickup coil, which is supplied to the load. There is a problem that the current that can be produced is limited.

  Therefore, an object of the present invention is to provide a pickup unit capable of increasing an electromotive force induced in a coil and a non-contact power supply facility including the pickup unit.

  In order to achieve the above object, a pickup unit according to claim 1 of the present invention is a pickup unit in which an electromotive force is induced from a pair of induction lines to which a high-frequency current is fed, and has a plurality of U-shapes. Are formed in an S-shape or a continuous S-shape by connecting the respective recesses in a state of being reversed to each other, and the pair of guides are arranged at substantially the center of each of the recesses or at a position behind the center. A core body in which a line is disposed, and a coil wound around a central portion of the core body and in which an electromotive force is induced from the pair of induction lines, are provided.

  According to the above configuration, a plurality of U-shaped cores are connected in a state where the respective concave portions are reversed to form an S-shaped core or a continuous S-shaped core body. When high-frequency current is fed to a pair of induction lines arranged at the approximate center of the recess or at the back side of the center, compared with the case where the core body is formed in an E shape or a continuous E shape with the same dimensions. Then, since the magnetic flux interlinking with the coil wound around the central portion of the core body increases, a large electromotive force is generated in the coil.

  The invention according to claim 2 is the invention according to claim 1, wherein the pair of guide lines are positioned substantially equidistant from each surface forming the recess in each recess of the core body. It is characterized by being arranged in.

  According to the above configuration, when an alternating current is supplied to a pair of induction lines arranged at substantially equal distances from the surfaces forming the recesses to generate a magnetic flux, an electromotive force is generated most efficiently in each coil. .

  The invention according to claim 3 is the invention according to claim 1 or 2, wherein the two U-shaped cores are formed by connecting one protrusion of each core to the cylindrical connecting means. It is connected by inserting reversely, The said coil is wound around the said connection means, It is characterized by the above-mentioned.

  According to the above configuration, the two U-shaped cores are connected to the cylindrical connecting means by inserting one projecting portion of each core in a reverse manner, and by winding a coil around the connecting means, An S-shaped core body in which a coil in which an electromotive force is induced by a pair of induction lines is wound at the center is formed.

Further, the invention described in claim 4 is the invention described in claim 3, wherein the connecting means has an edge formed around each opening.
According to the above configuration, since the edge is formed around each open portion of the connecting means, the coil is easily wound around the connecting means, and the wound coil is firmly fixed without being displaced. .

  Moreover, the invention according to claim 5 is the invention according to claim 1, wherein the core body is formed in a hollow shape, and includes connection means in which an edge is formed around each opening, The protrusion of the recess in the one core-like core is inserted from one opening of the connecting means, and the protrusion of the recess in the other U-shaped core is inserted into the other opening of the connecting means. The coil is wound between the edges of the connecting means.

  According to the above configuration, the protrusion of the recess in one of the cores is inserted from one opening of the connecting means, and the protrusion of the recess in the other U-shaped core is inserted into the other of the connecting means. An S-shaped core body, in which a coil in which an electromotive force is induced by a pair of induction lines, is wound around the center portion by inserting the coil between the edges of the connecting means and winding the coil between the edges of the connecting means. It is formed.

  The invention according to claim 6 is an induction line unit that lays a pair of induction lines that cause a high-frequency current to flow along the moving line of the moving body, and any one of claims 1 to 5. The guide line unit includes a first support body that supports the one guide line at a front end portion, and a rear end portion of the first support body is fixed, and the first support body is set vertically. A second support member to be supported, a third support member that supports the other guide line at the tip, and a rear end portion of the third support member is fixed to support the third support member vertically. The fourth support and one guide line supported by the first support are arranged at the approximate center of one recess of the core body of the pickup unit or at a position deeper than the center, and the third The other induction line supported by the other support is the picker. A support member formed from a fifth support body that connects the second support body and the fourth support body so as to be arranged at the approximate center of the other concave portion of the core body of the main unit or at a position on the back side from the center. Are provided at predetermined intervals along the moving line.

  According to the above configuration, since the support members are arranged at predetermined intervals along the moving line, one guide line is supported by the first support body from the moving body side at predetermined intervals, and the other The induction line is supported by the third support body from the moving line side at predetermined intervals.

  Further, the invention according to claim 7 is the invention according to claim 6, wherein the pickup unit includes an attachment member formed of a member that allows magnetic flux to pass through any one of the cores. The mounting member is attached to the moving body by a connecting member that connects the mounting member and the moving body.

  According to the above configuration, since the mounting member formed of a member capable of passing the magnetic flux is attached to one of the cores, the magnetic flux guided to the core is prevented from being blocked by the mounting member. The In addition, the pickup unit is attached to the moving body by the attachment member and the connecting member in a state where the respective guide lines are positioned at substantially the center of the both concave portions of the pickup unit or the back side from the center.

  The invention according to claim 8 is the invention according to claim 6 or claim 7, wherein a plurality of the pickup units are arranged at intervals larger than the width of the core in the moving path direction. It is characterized by being attached to.

  According to the said structure, when arrange | positioning each core in the direction where the induction line was laid, by making the space | interval of each core larger than the width | variety of the core in the direction (direction along a induction line) where the induction line was laid. Since heat is easily dissipated and the temperature is lowered, and an end effect is obtained in each core, a higher electromotive force is induced in each coil than in the case where the cores are arranged in close contact with each other. Is obtained.

  In the pickup unit of the present invention, the core body is formed in an S-shape or a continuous S-shape by connecting a plurality of U-shaped cores in a state where the respective concave portions are reversed to each other. Compared with the case where a core formed in an E shape or a continuous E shape of the same size is used, the magnetic flux interlinking with the coil is increased, and a large electromotive force can be generated in the coil. Therefore, it is possible to supply power to a large load.

Hereinafter, a non-contact power supply facility according to an embodiment of the present invention will be described with reference to the drawings.
As shown in FIG. 1, a transport cart V as a moving body is composed of a drive trolley 1A, a driven trolley 1B, and an article transport carrier 1C supported by these trolleys 1A and 1B, and the transport cart V can be moved freely. And an aluminum guide rail (an example of a moving line) B are provided.

  The drive trolley 1A includes a traveling wheel 2 that engages with the upper portion of the guide rail B, a steadying roller 3 that contacts the lower portion of the guide rail B from both sides, and a pickup unit P. The traveling wheel 2 is a reduction gear. It is driven by the attached electric motor 4. The driven trolley 1B includes a traveling wheel 5 that engages with the upper portion of the guide rail B, and a steadying roller 6 that contacts the lower portion of the guide rail B from both lateral sides.

  The guide rail B is provided with a wheel guide portion 7 at the upper portion thereof and a roller guide portion 8 at the lower portion thereof, and is supported in a suspended state from a ceiling or the like by a support frame 9 connected to one lateral side portion. The guide line unit X is attached to the other side portion to which the support frame 9 is attached. Further, claw portions 7A and 8A project from the wheel guide portion 7 and the roller guide portion 8 of the guide rail B toward the other side (inward), respectively.

  As shown in FIGS. 2 and 3, the guide line unit X laying a pair of guide lines 11 for flowing a high-frequency current along the guide rail B of the transport carriage V has the upper (one) guide line 11 at the tip. A first hanger 12A (an example of a first support) to be supported, and a second bracket 12B (second second) that supports the first hanger 12A in the horizontal direction (vertical) with the rear end of the first hanger 12A fixed. An example of a support body), a third hanger 12C (an example of a third support body) that supports the lower (other) induction line 11 at the tip portion, and a rear end portion of the third hanger 12C is fixed to the third hanger 12C. A fourth bracket 12D (an example of a fourth support) that supports the hanger 12C in the horizontal direction (vertical) and an upper guide line 11 supported by the first hanger 12A are a core body 20 (described later). )upon The lower guide line 11 supported by the third hanger 12C is disposed at a position behind the center of the recess 24 below the core body 20 of the pickup unit P. A bracket (an example of a member through which magnetic flux passes) is formed from a fifth bracket 12E (an example of a fifth support) that couples the second bracket 12B and the fourth bracket 12D to each other. ) 12 at predetermined intervals along the guide rail B.

  As described above, since the brackets 12 are arranged at predetermined intervals along the guide rail B, the upper guide line 11 is supported by the first hanger 12A from the transport carriage V side at predetermined intervals, and the lower side. Are guided by the third hanger 12C from the guide rail B side at predetermined intervals.

  The length of the second bracket 12B in the vertical direction (major axis direction) is set to be approximately 1.5 times to approximately twice the vertical length of the pickup unit P facing the concave portion 23 of the core body 20. The vertical length of the fourth bracket 12D is set to be approximately 0.5 times to approximately 1 time the vertical length of the pickup unit P facing the concave portion 24 of the core body 20.

  As a result, when the second bracket 12B set to approximately 1.5 times to approximately twice the length of the pickup unit P facing the recess 23 of the core body 20 is attached to the guide rail B, the fourth bracket 12D Since the length is set to be approximately 0.5 times to approximately 1 time the length of the pickup unit P facing the recess 24 of the core body 20, the space above the fourth bracket 12D is used. It becomes easy to put the pickup unit P between the induction lines 11.

  Also, a bag-shaped recess 13 is provided at the tip of the first hanger 12A and the third hanger 12C, and a cover in which one guide line 11 having the same energization direction is fitted in the recess 13 in the longitudinal direction. Fourteen claw portions 14A are inserted. The induction line 11 is configured by covering twisted wires formed by collecting thin insulated wires (hereinafter referred to as litz wires) with an insulator, for example, a resin material, as shown in FIGS. The starting end is connected to the power supply device D and is laid along the guide rail B.

  The bracket 12 has the upper and lower ends fitted to the claws 7A and 8A of the guide rail B with the second bracket 12B, the set screw 16 is screwed into the screw holes 15 provided at the upper and lower ends, and the tip of the bracket 12 is inserted. It is fixed by biting into the guide rail B.

  As shown in FIGS. 2, 4, and 6, the pickup unit P includes concave portions 23 and 24 of two U-shaped upper ferrite cores (an example of a core) 21 and lower ferrite cores (an example of a core) 28. And a core body 20 in which a pair of induction lines 11 are arranged at positions farther from the centers of the recesses 23 and 24, and the core body 20 Pickup coils (an example of coils) 22 (first pickup coils 22A, 22A, 22A, 22A, 22A, 22A, 22B) that are wound around a central portion (upper second core block 21B and lower first core block 28A) A second pickup coil 22B and a third pickup coil 22C). These pickup coils 22 are formed by winding the litz wire of 10 to 20 turns, for example.

  The upper ferrite core 21 includes a rectangular columnar (or columnar) upper first core block 21A, upper second core block 21B, upper first core block 21A, and upper second core block 21B arranged in a horizontal direction. By connecting one side (conveying carriage V side) with a quadrangular prism-shaped (or columnar) upper third core block 21 </ b> C, a U-shape is formed. Further, the length of the upper first core block 21A and the upper second core block 21B in the major axis direction is longer than the length of the upper third core block 21C in the major axis direction, and further the major axis of the upper third core block 21C. The area of the side surface 21c in the direction is larger than the areas of the side surfaces 21a and 21b in the minor axis direction of the upper first core block 21A and the upper second core block 21B.

  The lower ferrite core 28 includes a rectangular columnar (or columnar) lower first core block 28A, lower second core block 28B, lower first core block 28A, and lower second core block 28B arranged in a horizontal direction. By connecting the other side (guide rail B side) with a quadrangular prism-shaped (or columnar) lower third core block 28C, it is formed in a U-shape. Further, the length of the lower first core block 28A and the lower second core block 28B in the major axis direction is longer than the length of the lower third core block 28C in the major axis direction, and further the major axis of the lower third core block 28C. The area of the side surface 28c in the direction is larger than the areas of the side surfaces 28a and 28b in the short axis direction of the lower first core block 28A and the lower second core block 28B.

  The pair of induction lines 11 includes, in each recess 23, 24 of the core body 20, each surface of the upper first core block 21A, the upper second core block 21B, and the upper third core block 21C forming the recess 23, and the recess. The lower first core block 28A, the lower second core block 28B, and the lower third core block 28C, which form 24, are best arranged at substantially equidistant positions.

  As a result, when an alternating current is supplied to the pair of induction lines 11 disposed at substantially equal distances from the respective surfaces forming the recesses 23 and 24, the magnetic flux is generated most efficiently to the core body 20. The collected electromotive force is efficiently generated in the pickup coil 22. It is also possible to arrange the pair of induction lines 11 at substantially the center positions of the recesses 23 and 24 of the core body 20.

  Further, as shown in FIG. 4, the upper ferrite core 21 and the lower ferrite core 28, which are two U-shaped cores, are made of a member (for example, resin) that allows magnetic flux to pass through, and around each opening 29B. A cylindrical bobbin (an example of a connecting means) 29 on which an edge 29A is formed is an upper second core block 21B that is one protrusion of the upper ferrite core 21 and one protrusion of the lower ferrite core 28. The lower first core block 28 </ b> A is connected by inserting it in the opposite direction, and a pickup coil 22 is wound around the bobbin 29.

  More specifically, the core body 20 includes a bobbin 29 that is formed in a hollow shape and has an edge portion 29A formed around each opening 29B. The upper ferrite core 21 (one U-shaped core) The upper second core block 21B (projection) of the recess 23 is inserted from one opening 29B of the bobbin 29, and the lower first core block of the recess 24 in the lower ferrite core 28 (the other U-shaped core). 28A (projection) is inserted from the other opening 29B of the bobbin 29, and the pickup coil 22 is wound between the edges 29A of the bobbin 29.

  Thus, the upper second core block 21B of the recess 23 in the upper ferrite core 21 is inserted from one opening 29B of the bobbin 29, and the lower first core block 28A of the recess 24 in the lower ferrite core 28 is inserted into the bobbin. By inserting the pickup coil 22 in advance between the edge 29A of the bobbin 29 and inserting the pickup coil 22 in advance through the other opening 29B of the bobbin 29, the electromotive force is easily generated by the pair of induction lines 11 at the center. The S-shaped core body 20 around which the pickup coil 22 is induced is formed.

  In addition, each pickup unit P is attached to the upper third core block 21C of the upper ferrite core 21 with an attachment member 25 formed of a member (for example, resin) that can pass magnetic flux, and the upper side of the attachment member 25 It is attached to the transport carriage V by a connecting member 26 that connects the (first upper core block 21A side) and the transport carriage V. The connecting member 26 is also preferably formed of a member (for example, resin) that can pass magnetic flux.

  Thereby, since the attachment member 25 formed of a member capable of allowing the magnetic flux to pass is attached to the upper third core block 21C, the side surface 28b and the lower second surface in the minor axis direction of the lower second core block 28B. The magnetic flux guided between the side surface 28a in the minor axis direction of the one core block 28A and the side surface 21c in the major axis direction of the upper third core block 21C is prevented from being blocked, and the magnetic flux passes therethrough. The Further, the pickup unit P is transported by the mounting member 25 and the connecting member 26 in a state where the upper and lower guide lines 11 are arranged at positions farther from the centers of the upper and lower recesses 23 and 24 of the pickup unit P. It is attached to the carriage V.

An aluminum plate 27 (an example of a member that blocks the passage of magnetic flux) is attached to the transport carriage V so as to face at least the recess 24.
Accordingly, the surface facing the upper recess 23 is aluminum (guide rail B), and the surface facing the lower recess 24 is also aluminum (aluminum plate 27), so that the leakage magnetic flux can be reduced and the efficiency is improved. .

Further, the length of the connecting member 26 in the horizontal direction (long axis direction) is longer than the length of the fourth bracket 12D in the horizontal direction (short axis direction).
As a result, the pickup unit P is disposed at a predetermined distance from the transport carriage V, that is, at a position separated by at least the horizontal length of the fourth bracket 12D, and the pickup unit P is moved from the side surface 21a of the upper first core block 21A. Since the interval L1 to the inner surface of the second bracket 12B and the interval L2 from the side surface 28b of the lower second core block 28B to the inner surface of the fourth bracket 12D are spaced by a predetermined interval, the upper first core block 21A is short. Between the side surface 21a in the axial direction, the side surface 21b in the minor axis direction of the upper second core block 21B, and the side surface 28c in the major axis direction of the lower third core block 28C, and the lower second core block 28B Side surface 28b in the minor axis direction and side table in the minor axis direction of the lower first core block 28A Preventing the magnetic flux to move between the side surface 21c in 28a and the long axis direction of the upper third core block 21C is eliminated. Further, it is possible to avoid the conveyance carriage V coming into contact with the bracket 12.

Further, the second bracket 12 </ b> B and the fourth bracket 12 </ b> D are formed to have a length that does not intersect the connecting member 26.
Thus, when the second bracket 12B is attached to the guide rail B, the fourth bracket 12D is formed to a length that does not intersect the connecting member 26, and when the fourth bracket 12D is attached to the guide rail B, The second bracket 12 </ b> B is formed to a length that does not intersect the connecting member 26.

  As shown in FIG. 6, the pickup unit P includes three (a plurality of) core bodies 20 and a central portion (the upper second core block 21 </ b> B and the lower first core block 28 </ b> A) of the core body 20 in the horizontal direction. The three pickup units P are arranged in the horizontal direction (the direction along the guide rail B in FIG. 1), and the three pickup units P are spaced apart by a distance b (a <b) wider than the width a of the core body 20 in the movement path direction. It is attached to the transport carriage V.

  Thereby, since sufficient space | interval b is formed between each core body 20 by which each pick-up coil 22A, 22B, 22C was wound, heat dissipation becomes easy and temperature is lowered | hung, and in each core body 20 Since the end effect is obtained, a higher electromotive force is induced in each of the pickup coils 22A, 22B, and 22C than in the case where the pickup coils 22A, 22B, and 22C are brought into close contact with each other, efficiency is improved, and large electric power is obtained. It is done.

  Further, as shown in FIG. 2A, the pickup member P is connected to the center O (the second upper core block 21B and the lower first core block 28A) of the core body 20 of the pickup unit P by the connecting member 26. Is adjusted to be positioned at a right angle to the guide rail B at the center of one guide line 11 above and below the guide line unit X, and is fixed to the transport carriage V.

The circuit configuration of the power supply device D and the transport carriage V will be described with reference to the circuit diagram of FIG.
The power supply device D includes an AC 200V three-phase AC power supply 31, a converter 32, an inverter 33, an overcurrent protection transistor 34, and a diode 35. The converter 32 includes a full-wave rectifier 36, a coil 37 that constitutes a filter, a capacitor 38, a resistor 39, and a transistor 40 that short-circuits the resistor 39. The inverter 33 includes a current-limiting coil 41 and a rectangular shape. It is composed of a transistor 42 assembled in a full bridge driven by a wave signal. Note that the transistor control device is omitted.

  A plurality of transport carriages V are provided opposite to the induction line 11 through which the high-frequency current I flows, and the first pickup coil 22A, the second pickup coil 22B, the third pickup coil 22C, in which the electromotive force is induced from the induction line 11, Resonant circuits 52A, 52B, and 52C that are formed of a first capacitor 51A, a second capacitor 51B, and a third capacitor 51C that are connected in series for each pickup coil 22A, 22B, and 22C and resonate with the frequency of the induction line 11. Each primary side winding is connected in series between the first pickup coil 22A and the second capacitor 51B and between the second pickup coil 22B and the third capacitor 51C, and the input side is Rectifier 54 connected to the secondary side of transformer 53, collector and emitter The anode is connected to the connection point between the output adjustment transistor 55 connected between the output terminals of the rectifier 54, the positive output terminal of the rectifier 54 and one end of the output adjustment transistor 55, and the cathode is connected to one end of the inverter 60. A rectifier circuit 57A that is connected in parallel to the connected diode 56 and the resonance circuits 52A, 52B, and 52C, rectifies the voltage generated by the resonance circuits 52A, 52B, and 52C, and supplies power to the motor 4 whose power consumption varies. , 57B, 57C, a current limiting coil 58 connected in series with the output side of the rectifier circuits 57A, 57B, 57C, and connected in parallel with the output side of the rectifier circuits 57A, 57B, 57C via the coil 58 Connected to the smoothing capacitor 59 and a load such as an inverter 60 to the smoothing capacitor 59. It is configured Te. Note that the transistor control device of the output adjustment transistor 55 is omitted. This transistor control device monitors the output voltage applied to the inverter 60, turns on the output adjustment transistor 55 when the voltage is lower than the predetermined voltage, and confirms that the overvoltage exceeds the predetermined voltage. The transistor 55 is turned off, and the output voltage is adjusted to a predetermined voltage or lower.

  In addition, a capacitor 43 is connected in series to each induction line 11, and a variable inductance 44 capable of adjusting the impedance of a predetermined frequency of the entire induction line 11 by adjusting the inductance value is connected in series. . The variable inductance 44 is connected when the length of the induction line 11 (line length) does not satisfy a predetermined length, that is, when the inductance value of the induction line 11 does not reach a predetermined inductance value.

The effect | action by the circuit structure of the said power supply device D, the induction track | line 11, and the conveyance trolley V is demonstrated.
First, AC 200V three-phase alternating current output from the alternating current power supply 31 is converted into direct current by the converter 32, converted into high frequency, for example, 10 kHz alternating current by the inverter 33, and supplied to the induction line 11. Here, if the transistor 55 is turned on when the transport carriage V is running, the transport located on the guide rail B that resonates with the frequency of the guide line 11 due to the magnetic flux generated in each of the upper and lower guide lines 11. A large electromotive force is generated in each pickup coil 22 of the carriage V, and an alternating current generated by the electromotive force is rectified by each rectifier circuit 57 and supplied to the electric motor 4 with a speed reducer via the inverter 60. At this time, the resonance circuits 52A, 52B, and 52C are connected in series, and the generated voltages are added and applied to the inverter 60. The traveling carriage V, which is a moving body, moves while being guided by the guide rail B, with the traveling wheels 2 being driven by the supplied motor 4.

  Here, when the magnetic flux is generated by the alternating current supplied to the induction line 11, as shown by an arrow in FIG. 6, the upper induction line 11 is moved from the far side to the front side (that is, from the pickup coil 22A side to the pickup coil 22 side). ) And a current flows from the near side to the other side of the lower induction line 11 (ie, from the pickup coil 22C side to the pickup coil 22A side), the direction of the magnetic field is counterclockwise (upper part) in the upper ferrite core 21. The magnetic field of the second core block 21B → the upper third core block 21C → the upper first core block 21A → the upper second core block 21B) is generated, and the direction of the magnetic field in the lower ferrite core 28 is clockwise (lower first 1 core block 28A → lower second core block 28B → lower third core block 28C → lower second Field as a core block 28A) is generated.

  At this time, in the magnetic field generated in the upper ferrite core 21, the area of the side surface 21b in the minor axis direction of the upper second core block 21B and the side surface 28c in the major axis direction of the lower third core block 28C is as follows. Since the upper first core block 21A is formed wider than the area of the side surface 21a in the minor axis direction, a large amount of magnetic flux is generated from the upper first core block 21A by the upper second core block 21B and the lower first core block 21A. Led to.

  Thereby, compared with the case where the core body formed in the E shape with the same size is used, the magnetic flux interlinking with each pickup coil 22 is increased. Therefore, a large electromotive force is generated in each pickup coil 22. appear.

  In addition, when the transistor 55 is turned off, for example, when the conveyance carriage V is stopped, the conveyance carriage V located on the guide rail B that resonates with the frequency of the induction line 11 is caused by the magnetic flux generated in each of the upper and lower induction lines 11. Although an electromotive force is generated in each of the pickup coils 22A, 22B, and 22c, the resonance circuits 52A, 52B, and 52C are connected in parallel, and a voltage generated in one resonance circuit 52 is applied to the inverter 60. The voltage applied to is reduced.

  As described above, according to the embodiment, the core body 20 is formed in an S shape with the concave portions 23 and 24 of the upper ferrite core 21 and the lower ferrite core 28 being adjacent to each other in an inverted state. Compared with the case of using the E-shaped core body of the same size, the magnetic flux interlinking with each pickup coil 22 is increased, so that a large electromotive force is generated in each pickup coil 22. Can thus power a large load.

  Moreover, according to the said embodiment, in each recessed part 23 and 24 of the core body 20, each surface of the upper 1st core block 21A, the upper 2nd core block 21B, and the upper 3rd core block 21C which form the recessed part 23, And an alternating current is supplied to the pair of induction lines 11 disposed at substantially equal distances from the respective surfaces of the lower first core block 28A, the lower second core block 28B, and the lower third core block 28C forming the recess 24. When the magnetic flux is generated, the electromotive force can be generated most efficiently in each pickup coil 22.

  Further, according to the above-described embodiment, the upper ferrite core 21 and the lower ferrite core 28 are connected to the cylindrical bobbin 29 by inserting one core block of each of the cores 21 and 28 in reverse to each other, and the bobbin in advance. By winding the pickup coil 22 around 29, the S-shaped core body 20 around which the pickup coil 22 in which the electromotive force is induced by the pair of induction lines 11 is wound at the center is easily and efficiently formed. can do.

  Further, according to the above-described embodiment, the edge portion 29A is formed around each open portion 29B of the bobbin 29, so that the pickup coil 22 can be easily wound around the bobbin 29, and workability can be improved. The pickup coil 22 can be firmly fixed without being displaced.

  Further, according to the embodiment, the upper second core block 21B of the recess 23 in the upper ferrite core 21 is inserted from the one opening 29B of the bobbin 29 and the first lower portion of the recess 24 in the lower ferrite core 28 is inserted. The core block 28A is inserted from the other opening 29B of the bobbin 29, and the pickup coil 22 is wound between the edges 29B of the bobbin 29, whereby an electromotive force is induced by the pair of induction lines 11 at the center. The S-shaped core body 20 around which the pickup coil 22 is wound can be easily and efficiently formed.

  Moreover, according to the said embodiment, the bracket 12 is arrange | positioned along the guide rail B every predetermined space | interval, and the upper guide line 11 is made into the 1st hanger 12A from the conveyance trolley V side every predetermined space | interval. Since the lower guide line 11 is supported by the third hanger 12C from the guide rail B side at predetermined intervals, the upper and lower guide lines 11 can be supported without bending. it can.

  In addition, according to the above embodiment, the attachment member 25 formed of a member capable of passing magnetic flux is attached to the upper third core block 21C of the upper ferrite core 21, so the lower second core block 28B. Passes through the magnetic flux guided between the side surface 28b in the minor axis direction of the first side block 28a, the side surface 28a in the minor axis direction of the lower first core block 28A, and the side surface 21c in the major axis direction of the upper third core block 21C. Can be made. Further, the pickup unit P is mounted in a state where the upper and lower guide lines 11 are arranged at positions farther from the centers of the upper and lower recesses 23 and 24 of the pickup unit P by the mounting member 25 and the connecting member 26. It can be attached to the transport carriage V.

  Further, according to the above embodiment, when the core bodies 20 around which the pickup coils 22A, 22B, and 22C are wound are arranged in the direction in which the induction line 11 is laid, the interval b between the core bodies 20 is guided. By making it larger than the width a of the core body 20 in the direction in which the line 11 is laid, heat can be easily diffused and the temperature can be lowered, and thus the efficiency of air cooling can be improved. In addition, since an end effect equivalent to the end effect generated on the outside of the side end portion of the core body 20 can be obtained between the core bodies 20 (locations at the interval b), the pickup coils 22A, 22B, A high electromotive force is induced at 22C, and a large electric power can be obtained. Therefore, the efficiency of power supply to the secondary power receiving circuit can be improved. Furthermore, since the quantity of the core bodies 20 can be reduced, the pickup unit P can be reduced in weight and the cost can be reduced.

  In the above embodiment, the S-shaped core body is vertically adjacent to each other with the concave portions 23 and 24 of the upper ferrite core 21 and the lower ferrite core 28 formed in a U-shape reversed. However, as shown in FIG. 7, the upper ferrite core 81 and the lower ferrite core 82, which are formed in an S-shape and have pickup coils 84A and 85A wound around the central portions 84 and 85, are arranged in the vertical direction. The core body 83 may be formed adjacent to each other, and the pickup coil 86 </ b> A may be wound around the connecting portion 86 between the upper ferrite core 81 and the lower ferrite core 82. At this time, a core body 83 that can obtain an electromotive force from two pairs of induction lines 87 can be realized. In addition, since the pickup coil 86A can be wound around the connecting portion 86 between the upper ferrite core 81 and the lower ferrite core 82, a large electromotive force can be generated, and therefore a large load can be fed. The core body 83 is formed by connecting a plurality of U-shaped ferrite cores (a plurality of upper ferrite cores 21 and lower ferrite cores 28) in a state in which the concave portions 23 and 24 are opposite to each other. It may be formed in a continuous S shape.

  Further, in the above embodiment, the core body 20 is disposed so that the opening of the upper recess 23 is on the guide rail B side and the opening of the lower recess 24 is on the transport carriage V side. As shown, the core body 20 may be arranged such that the opening of the upper recess 23 is on the transport carriage V side and the opening of the lower recess 24 is on the guide rail B side.

  At this time, the bracket 12 has the fourth bracket 12D fixed to the guide rail B, and the second bracket 12B is located on the transport carriage V side, so that the attachment member 25 is attached to the upper surface of the upper first core block 21A. And is attached to the transport carriage V by an L-shaped connecting member 26.

It is a side view of the non-contact electric power supply equipment in embodiment of this invention. It is the pick-up unit and induction line unit attached to the guide rail of the non-contact electric power supply equipment, (a) is a side view, (b) is a principal part top view. It is a partial cross section front view of the same non-contact electric power supply equipment. It is a block diagram of the same core body. It is a circuit block diagram of the non-contact electric power supply equipment. It is a perspective view of the pickup unit of the non-contact power supply equipment. It is a perspective view of the pick-up unit formed by making the core body formed in the same S shape adjoin in the up-down direction. It is a figure which shows the other attachment method of the pickup unit and induction line unit.

Explanation of symbols

11 Induction line 12 Bracket (supporting member)
12A First hanger (first support)
12B Second bracket (second support)
12C 3rd hanger (3rd support)
12D Fourth bracket (fourth support)
12E Fifth bracket (fifth support)
20 Core body 22A First pickup coil (coil)
22B Second pickup coil (coil)
22C Third pickup coil (coil)
23 Upper recess (recess)
24 Lower recess (recess)
25 Mounting member 26 Connecting member B Guide rail (moving line)
P Pickup unit V Carriage cart (moving body)
X Induction line unit

Claims (8)

A pickup unit in which an electromotive force is induced from a pair of induction lines fed with a high-frequency current,
A plurality of U-shaped cores are formed in an S-shape or a continuous S-shape by connecting them in a state in which the respective concave portions are reversed to each other. A core body on which the pair of induction lines are disposed;
A pickup unit comprising a coil wound around a central portion of the core body and in which an electromotive force is induced from the pair of induction lines. 2. The pickup unit according to claim 1, wherein the pair of induction lines are arranged at substantially equal distances from the surfaces forming the recesses in the recesses of the core body. The two U-shaped cores are connected to each other by inserting one protrusion of each core into the cylindrical connecting means,
The pickup unit according to claim 1, wherein the coil is wound around the connecting means. 4. The pickup unit according to claim 3, wherein the connecting means has an edge formed around each opening. The core body is
It is formed in a hollow shape, and includes connecting means in which an edge is formed around each opening,
The protrusion of the recess in the one core-like core is inserted from one opening of the connecting means, and the protrusion of the recess in the other U-shaped core is inserted into the other opening of the connecting means. The pickup unit according to claim 1, wherein the coil is wound between edges of the connecting means. An induction line unit for laying a pair of induction lines for flowing a high-frequency current along the moving line of the moving body;
A pickup unit according to any one of claims 1 to 5, comprising:
The induction line unit is
A first support for supporting the one guide line at the tip, a second support for fixing the rear end of the first support to support the first support vertically, and the other A third support for supporting the guide line at the tip, a fourth support for fixing the rear end of the third support to support the third support vertically, and the first support One guide line supported by the support is arranged at the approximate center of one recess of the core body of the pickup unit or at a position on the back side from the center, and the other guide line supported by the third support Is formed from a fifth support body that connects the second support body and the fourth support body so that the second support body and the fourth support body are disposed at a substantially center of the other concave portion of the core body of the pickup unit or a position behind the center. Support member
A non-contact power supply facility provided at predetermined intervals along the moving line. The pickup unit is
An attachment member formed of a member capable of passing magnetic flux is attached to any one of the cores, and the attachment member is attached to the moving body by a connecting member that connects the attaching member and the moving body. The contactless power supply facility according to claim 6. The contactless power supply equipment according to claim 6 or 7, wherein the plurality of pickup units are attached to the moving body at an interval wider than a width of the core in the moving path direction.

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