Non-contact power supply device

Abstract

To solve the problem related to an adapter and a cable for power feeding when the number of correspondable carts is made variable in units of 1 in a non-contact power feeding device for feeding power to article registration devices installed on carts.SOLUTION: In a non-contact power feeding device provided with a placement part on which carts each having a device and a power reception part for receiving power supplied to the device are piled up in one direction to be stacked and placed, and transmitting power by non-contact feeding to the power reception part of the cart stacked on the placement part, the non-contact power feeding device comprises: a power feeding unit to which each of the number of carts corresponding to the number of carts stackable along a pile-up direction of the carts is connected to constitute the placement part, and which is provided with a power transmission part for transmitting power by non-contact power feeding to the one power reception part per one cart; a stop part to which a front end part of the leading cart that travels on the placement part is bumped, to define a stop position of the cart, and which stores in a housing a relay board for relaying a power feeding to the power feeding unit from a power source; and a relay cable for connecting between a power transmission terminal of the relay board and a power reception terminal of a board on which the power transmission part is mounted.SELECTED DRAWING: Figure 6

Description

[Technical field]

[0001] An embodiment of the present invention relates to a contactless power supply device. [Background technology]

[0002] Conventionally, in retail stores such as supermarkets, so-called shopping carts are used in which customers place products to be purchased. By attaching a device such as a product registration device that can read product information that can identify products to such carts, convenience can be improved.

[0003] When a device is attached to a cart, the power used by the device needs to be charged. Therefore, a method of charging the device using wireless power supply is considered. In this case, a wireless power supply device that transmits power via wireless power supply will be installed in the store.

[0004] However, the scale of the contactless power supply device installed in a store varies depending on the situation of each store. In other words, the number of carts that need to be charged by contactless power supply varies from store to store. For this reason, a contactless power supply device that can arbitrarily change the number of carts to be charged has been devised (for example, Patent Document 1).

[0005] However, if the number of compatible units can only be changed in units of multiple units in a non-contact power supply device, the installation space available in the store may be insufficient or may be wasted. For this reason, it is more desirable to be able to change the number of compatible units one by one. If an extension unit that can change the number of compatible units one by one is manufactured by utilizing the conventional structure and these units are connected and used, power will be supplied to each unit. This will cause problems such as the need for many AC adapters, the cable lengths required for each AC adapter being different, or the need for space to accommodate many cables. Summary of the Invention [Problem to be solved by the invention]

[0006] The problem that the present invention aims to solve is to solve problems related to power supply adapters and cables when the number of compatible devices can be changed in units of one device in a contactless power supply device that supplies power to a product registration device attached to a cart. [Means for solving the problem]

[0007] An embodiment is a contactless power supply device that includes a mounting section on which carts, each having a device and a power receiving section that receives power to be supplied to the device, are stacked in one direction and placed, and transmits power via contactless power to the power receiving section of the carts stacked on the mounting section, and the mounting section is formed by connecting a number of carts according to the number that can be stacked along the stacking direction of the carts, and the mounting section includes a power supply unit having a power transmission section that transmits power via contactless power to the power receiving section, one per cart, a stopping section that determines the stopping position of the cart by being abutted against the front end of the leading cart running on the mounting section, and includes a stopping section that houses a relay board that relays power supply from a power source to the power supply unit within a housing, and a relay cable that connects the power transmission terminal of the relay board and the power receiving terminal of a board on which the power transmission unit is mounted. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a perspective view illustrating an example of a contactless power supply system according to an embodiment. [Diagram 2] FIG. 2 is a perspective view showing an example of the appearance and configuration of a cart. [Diagram 3] FIG. 3 is a plan view showing an example of the structure of a contactless power supply device. [Figure 4] FIG. 4 is a schematic diagram showing a first example of an assembled state of the stopping portion and the power supply unit. [Diagram 5] FIG. 5 is a schematic diagram showing a second example of an assembled state of the stopping portion and the power supply unit in the first modification. [Figure 6] FIG. 6 is a schematic diagram showing a third example of an assembled state of the stopping portion and the power supply unit in the second modification. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] (First embodiment) The embodiment will be described with reference to the drawings. Note that the embodiment described below is one embodiment of a non-contact power supply device, and does not limit the configuration, specifications, etc. of the device. The non-contact power supply device of this embodiment and each part of the unit constituting the device are examples of application to a non-contact power supply device and each part constituting the device that supplies power in a non-contact manner to a cart equipped with a product registration device in a retail store.

[0010] Fig. 1 is a perspective view showing an example of a contactless power supply system 1 according to the present embodiment. The contactless power supply system 1 includes a cart 10 and a contactless power supply device 20. Fig. 1 shows a case where the contactless power supply device 20 is installed in a cart parking area in a retail store where the cart 10 is placed.

[0011] 1 shows a three-dimensional coordinate system to help understand the structure. The width direction of the non-contact power supplying device 20 is the X-axis direction, the direction in which the cart 10 is taken in and out of the non-contact power supplying device 20 is the Y-axis direction, and the height direction is the Z-axis direction. The cart 10 is taken in and out of the non-contact power supplying device 20 by moving forward and backward. The positive direction of the Y-axis is the forward direction of the cart 10, and the negative direction of the Y-axis is the backward direction of the cart 10.

[0012] 2 is a perspective view showing an example of the appearance and configuration of the cart 10. The cart 10 is loaded with products to be purchased collected by a customer in a retail store such as a supermarket. The cart 10 is a cart that is moved by being pushed by an operator.

[0013] More specifically, the cart 10 includes a base 11 for movement. The base 11 includes a pair of front wheels 111, 112 and a pair of rear wheels 113, 114 as wheels for the cart 10. The distance between the front wheels 111 and 112 is narrower than the distance between the rear wheels 113, 114. In addition, a mounting portion 117 is disposed below the base 11 to which a power receiving unit 116 that receives power through a non-contact power supply is attached. The power receiving unit 116 is disposed substantially horizontally.

[0014] The cart 10 is provided with a basket-shaped storage section 12 with an open top above the base section 11. The storage section 12 is supported by a support column 13 extending from the base section 11. The storage section 12 has a surface 121 on the rear side in the forward direction of the cart 10 that can be opened and closed. This allows the storage section 12 of a succeeding cart 10 to be inserted into the storage section 12 of the cart 10 as shown in FIG. 1, and also allows a larger number of carts to be stacked in one direction in a small area. Note that the cart 10 does not have to be provided with the storage section 12 itself, and may be provided with, for example, a basket receiving section that receives a product basket that stores products, and the product basket received by the basket receiving section serves as the storage section 12.

[0015] Further, a holder 14 that stores a secondary battery (not shown) is disposed below the storage unit 12. The secondary battery is a battery that stores the power received by the power receiving unit 116.

[0016] The support pole 13 also has a handle portion 15 that is gripped by a customer to move the cart 10. The support pole 13 also has a support portion 17 attached thereto that supports a product registration device 16 that registers products to be sold.

[0017] The product registration device 16 is a device that registers products to be sold. The product registration device 16 includes a scanner 161 and a display unit 162. The scanner 161 reads product information of the products to be sold. The scanner 161 reads a product code capable of identifying the product indicated by, for example, a barcode or the like. The display unit 162 is, for example, a touch panel display. The display unit 162 displays, for example, the product read by the scanner 161. The product registration device 16 is driven by power charged in a secondary battery housed in the holder 14.

[0018] Next, a description will be given of non-contact power supply device 20. Fig. 3 is a plan view showing an example of the structure of non-contact power supply device 20. Non-contact power supply device 20 includes power transmission section 21, housing 22, inclined surface section 23, placement section 24, central wheel guide section 25, first front wheel guide section 26, second front wheel guide section 27, first rear wheel guide section 28, second rear wheel guide section 29, and stop section 30.

[0019] The power transmission unit 21 transmits power to the power receiving unit 116 of the placed cart 10 by non-contact power supply. The efficiency of power supply to the power receiving unit 116 by this power transmission deteriorates when the power receiving unit 116 of the cart 10 is not positioned opposite the power transmission unit 21 of the non-contact power supply device 20. Therefore, the non-contact power supply device 20 is configured so that the cart 10 can be easily placed in a position where the power receiving unit 116 and the power transmission unit 21 are positioned opposite each other.

[0020] The housing 22 incorporates one or more power transmission units 21. The housing 22 is provided with light-emitting units 211 at positions corresponding to the periphery of the power transmission unit 21. The light-emitting units 211 emit light when the power receiving unit 116 is located opposite the power transmission unit 21. This allows a retail store manager or the like to identify whether charging is being performed by non-contact power supply. Note that FIG. 3 shows a non-contact power supply device 20 equipped with five power transmission units 21 and light-emitting units 211.

[0021] The housing 22 described above has a thickness that allows the power transmission unit 21 to be built in. The inclined surface portion 23 is provided at the rear end of the housing 22, and has an upper surface (slope) that is inclined so that the height increases in the positive direction of the Y axis. Such an inclined surface portion 23 helps the cart 10 entering the device to climb up onto the housing 22.

[0022] The placement section 24 is provided on the upper surface of the non-contact power supply device 20 at a position above the inclined surface section 23. The placement section 24 is an area on which the cart 10 is placed, the cart 10 having the product registration device 16 and the power receiving section 116 that receives power to be supplied to the product registration device 16. The carts 10 are accumulated on the placement section 24 in a state where they are stacked and lined up in one direction.

[0023] The power transmitting unit 21 is installed substantially horizontally at a position facing the power receiving unit 116 on the placement unit 24, and generates a magnetic field in the vertical direction. In this manner, the power transmitting unit 21 transmits power to the power receiving unit 116 of the cart 10 by non-contact power supply. There are various known methods of non-contact power supply, such as an electromagnetic induction method and a magnetic field resonance method, and various methods can be used.

[0024] In this embodiment, the term "non-contact" is used to mean that power transmission is performed wirelessly. Therefore, even if the power transmitting unit 21 and the power receiving unit 116 are in contact with each other during power supply due to some factor, regardless of whether or not they are intended to be in contact, if the power transmission is performed wirelessly, power is considered to be supplied contactlessly.

[0025] In addition, in order to position the power transmission unit 21 and the power receiving unit 116 in opposing positions, in the non-contact power supply device 20, the cart 10 needs to be placed in an appropriate position also in the width direction perpendicular to the direction in which the cart 10 enters, i.e., in the X-axis direction.

[0026] The central wheel guiding portion 25 is a convex portion that is disposed at approximately the center in the width direction of the non-contact power supply device 20 and exists over the entire area in the front-rear direction (Y-axis direction). The central wheel guiding portion 25 becomes wider from the rear end side (the entrance side of the cart 10) to the front end side. The central wheel guiding portion 25 has a width approximately equal to the width from the front wheel 111 to the front wheel 112 of the cart 10 in the placement portion 24. With this shape, the central wheel guiding portion 25 determines the position of the front wheels 111, 112 of the cart 10 in the width direction. In other words, the central wheel guiding portion 25 determines the position of the cart 10 in the non-contact power supply device 20 in the X-axis direction.

[0027] The first front wheel guide section 26 and the second front wheel guide section 27, and the first rear wheel guide section 28 and the second rear wheel guide section 29 are convex sections arranged laterally with respect to the approaching direction of the cart 10 in the central wheel guide section 25. These guide sections 26-29 extend from the rear end side (the approaching side of the cart 10) to the front end side of the placement section 24. The guide sections 26-29 are an example of rails.

[0028] The distance between the first front wheel guide portion 26 and the second front wheel guide portion 27 becomes wider from the rear end side (the entrance side of the cart 10) toward the placement portion 24. Furthermore, the first front wheel guide portion 26 has a width at the placement portion 24 that is approximately the same as the difference in the positions in the X-axis direction between the front wheels 111 and the rear wheels 113 of the cart 10. The second front wheel guide portion 27 has a width at the placement portion 24 that is approximately the same as the difference in the positions in the X-axis direction between the front wheels 112 and the rear wheels 114 of the cart 10.

[0029] In addition, the distance from the inside of the first front-wheel guide portion 26 to the central wheel guide portion 25 is approximately the same as the width of the front wheel 111. The distance from the inside of the second front-wheel guide portion 27 to the central wheel guide portion 25 is approximately the same as the width of the front wheel 112.

[0030] Further, the width from the outside of the first front wheel guide portion 26 to the outside of the second front wheel guide portion 27 is approximately the same as the width from the rear wheel 113 to the rear wheel 114 of the cart 10 .

[0031] The distance between the first rear wheel guide portion 28 and the second rear wheel guide portion 29 is parallel over the entire length in the front-rear direction. The distance from the inside of the first rear wheel guide portion 28 to the first front wheel guide portion 26 is approximately the same as the width of the rear wheel 113. The distance from the inside of the second rear wheel guide portion 29 to the second front wheel guide portion 27 is approximately the same as the width of the rear wheel 113.

[0032] Further, the width from the inside of the first rear wheel guide portion 28 to the inside of the second rear wheel guide portion 29 is approximately the same as the width from the rear wheel 113 to the rear wheel 114 of the cart 10 .

[0033] Due to the above-described shapes, the first front wheel guide section 26, the second front wheel guide section 27, the first rear wheel guide section 28, and the second rear wheel guide section 29 determine the widthwise positions of the front wheels 111, 112 and the rear wheels 113, 114 of the cart 10. Therefore, the central wheel guide section 25, the first front wheel guide section 26, the second front wheel guide section 27, the first rear wheel guide section 28, and the second rear wheel guide section 29 can determine the widthwise position of the cart 10 in the non-contact power supply device 20 when the cart 10 is placed on the placement section 24. In other words, the non-contact power supply device 20 can determine the position of the cart 10 in the X-axis direction.

[0034] The width of the gap between the central wheel guide portion 25 and the first front wheel guide portion 26 is approximately the same as the width of the front wheel 111. The front wheel 111 guided by the central wheel guide portion 25 and the first front wheel guide portion 26 runs in the gap between the central wheel guide portion 25 and the first front wheel guide portion 26. In other words, the central wheel guide portion 25 and the first front wheel guide portion 26 form a first front wheel runway 242 along which the front wheels 111 of the cart 10 run.

[0035] Similarly, the width of the gap between the central wheel guide portion 25 and the second front wheel guide portion 27 is approximately the same as the width of the front wheel 112. The front wheel 112 guided by the central wheel guide portion 25 and the second front wheel guide portion 27 runs in the gap between the central wheel guide portion 25 and the second front wheel guide portion 27. In other words, the central wheel guide portion 25 and the second front wheel guide portion 27 form a second front wheel runway 243 along which the front wheels 112 of the cart 10 run.

[0036] Furthermore, the central wheel guide section 25, the first front wheel guide section 26, and the second front wheel guide section 27 increase in width from the entry side of the cart 10 toward the placement section 24. In other words, the first front wheel running path 242 and the second front wheel running path 243 have substantially the same width as the front wheels 111, 112 in the placement section 24, but the portions entering the first front wheel running path 242 and the second front wheel running path 243 increase in width. Furthermore, the central wheel guide section 25, the first front wheel guide section 26, and the second front wheel guide section 27 have a convex shape.

[0037] That is, the mounting section 24 is provided with a first front wheel path 242 and a second front wheel path 243 which are paths for the wheels of the cart 10 and whose width in a direction perpendicular to the entry direction narrows as the cart 10 advances from the entry side where the cart 10 enters toward the entry direction of the cart 10. The mounting section 24 also has an entry section 244 for the first front wheel path 242 and the second front wheel path 243.

[0038] In this manner, the central wheel guide unit 25, the first front wheel guide unit 26, and the second front wheel guide unit 27 guide the front wheels 111, 112 of the cart 10. Therefore, by pushing the cart 10 from the entrance side of the non-contact power supply device 20, the operator can easily make the cart 10 run on the first front wheel running path 242 and the second front wheel running path 243.

[0039] In addition, the placement section 24 has a first rear wheel running path 245 between the first front wheel guide section 26 and the first rear wheel guide section 28, and a second rear wheel running path 246 between the second front wheel guide section 27 and the second rear wheel guide section 29.

[0040] The first front wheel path 242 and the second front wheel path 243 are provided with positioning units 241 for determining the position of the cart 10 in the entry direction. The positioning units 241 are, for example, recesses having a smooth curve, and make it difficult for the wheels of the cart 10, i.e., the front wheels 111 and 112, of the cart 10 that fit into the recesses to roll. Thus, the positioning units 241 can determine the positions of the front wheels 111 and 112. That is, the non-contact power supply device 20 can determine the position of the cart 10 on the placement unit 24 in the entry direction.

[0041] The stopping unit 30 is provided at the front end of the non-contact power supply device 20. The stopping unit 30 is a box-shaped container for storing an AC adapter and the like, and the height of the upper surface is higher than the upper surface of the mounting unit 24. Such a stopping unit 30 determines the stopping position of the cart 10 by being abutted by the front end of the leading cart 10 traveling on the mounting unit 24. More specifically, the stopping unit 30 is abutted by the front wheels 111, 112 of the leading cart 10 traveling on the mounting unit 24, and prevents the cart 10 from moving forward further, thereby stopping the cart 10.

[0042] 3 is configured by connecting a stopper 30 as a top unit, five power supply units 31, and an inclined surface 23 as an end unit. The power supply units 31 are connected in a number corresponding to the number of carts that can be stacked along the stacking direction of the carts 10 to form the placement unit 24. Each power supply unit 31 includes one power transmission unit 21 and one light emitting unit 211 described above. As a result, the power supply unit 31 transmits power to one power receiving unit 116 per unit by non-contact power supply. By increasing or decreasing the number of power supply units 31 in the non-contact power supply device 20, the number of carts 10 that can be charged by the non-contact power supply device 20 can be changed.

[0043] 4 is a schematic diagram showing a first example of an assembled state of the stopper 30 and the power supply unit 31. Note that in this drawing, the inclined surface 23 as an end unit provided at the rear end of the non-contact power supply device 20 is omitted.

[0044] Each power supply unit 31 incorporates a substrate 40 on which electronic components constituting the power transmission section 21 are mounted. The substrate 40 includes a power receiving terminal 41.

[0045] The stopping section 30 also houses within its housing a relay board 50 that relays power supply from a power source to the power supply unit 31. The relay board 50 relays power supply from the AC adapter 60 to each board 40, and includes a power receiving terminal 51 and a power transmitting terminal 52. A cable 61 of the AC adapter 60 is inserted into the power receiving terminal 51. The power transmitting terminals 52 are provided in the same number as the boards 40 capable of transmitting power, which is determined based on the tolerance of the AC adapter 60, etc. The power transmitting terminals 52 are connected to the power receiving terminals 41 of each board 40 by relay cables 71. Each relay cable 71 is housed within the front wheel guide section 27 (an example of a rail).

[0046] Here, the AC adapter 60 is an example of a power adapter. AC adapters 60 with various tolerances are commercially available, and an appropriate one is selected and used from those with a tolerance greater than the power required by the power supply target. However, in a conventional structure in which the AC adapter 60 is connected to each power supply unit 31, the tolerance of the AC adapter 60 must be greater than the power required by the power supply unit 31, so that the so-called over-specification may result in a large amount of waste, or conversely, the margin may be too small. In addition, since there are not many types of lengths for the cable 61 of commercially available AC adapters 60, when there are five types of distances to each power supply unit 31 as shown in FIG. 4, the cable 61 may be too long or insufficient.

[0047] In this embodiment, the inconveniences that may arise in the conventional structure as described above are resolved by connecting each power supply unit 31 and AC adapter 60 via relay board 50 and relay cable 71.

[0048] This allows only one type of AC adapter 60 to be required, which includes a cable 61 of a length sufficient to connect a power supply outlet provided in a store to the relay board 50. In addition, the relay cable 71 can be easily customized according to the distance from the power transmitting terminal 52 to the power receiving terminal 41 of each board 40.

[0049] The above-mentioned configuration can solve the problems associated with the conventional structure. That is, in the case of the non-contact power supply device 20 that supplies power to the product registration device 16 attached to the cart 10, problems associated with the selection of the standard of the AC adapter 60 and the length of the cable 61 when the number of compatible devices that can be charged is variable in units of one device can be solved. That is, according to this embodiment, for example, the conventional problems that require the installation of multiple AC adapters 60 within the stopping unit 30 can be solved.

[0050] The above-described embodiment can be modified as appropriate by changing a part of the configuration or function of the non-contact power supply device 20. Therefore, the following describes a modified example of the above-described embodiment as another embodiment. In addition, in the modified example, differences from the above-described embodiment will be mainly described, and detailed description of commonalities with the contents already described will be omitted. In addition, the modified examples may be implemented individually or in appropriate combination.

[0051] (Variation 1) 5 is a schematic diagram showing a second example of an assembled state of the stopping portion 30 and the power supply unit 31 in this modified example. In this modified example, each power supply unit 31 has a board 401 instead of the board 40 in the above embodiment. The board 401 has a power transmitting terminal 42 in addition to the power receiving terminal 41. The power transmitting terminal 42 is for relaying power transmission to the power receiving terminal 41 of the board 40 of another power supply unit 31.

[0052] In this modification, instead of the relay board 50 in the above embodiment, a relay board 501 is built into the stop portion 30. The relay board 501 has one power receiving terminal 51 and one power transmitting terminal 52. The power transmitting terminal 52 is connected to the power receiving terminal 41 of the board 401 of the power supply unit 31 adjacent to the stop portion 30 by a relay cable 71.

[0053] In this modification, the power transmitting terminals 42 and the power receiving terminals 41 of adjacent boards 401 are connected using four relay cables 72 of the same length, thereby linking the multiple boards 401 in a daisy chain. The relay board 50 housed in the housing of the stopper 30 supplies power to the boards 401 of the power supply unit 31 adjacent to the stopper 30.

[0054] With the above configuration, this modified example can avoid the inconvenience of multiple relay cables 71, 72 stored in the rails of the front wheel guide unit 27, etc. being bundled together. This improves the workability of installation. In addition, relay cables 72 of a uniform length can be stocked in advance, and only relay cable 71 needs to have its length customized each time.

[0055] (Variation 2) 6 is a schematic diagram showing a third example of an assembled state of the stopper 30 and the power supply unit 31 in this modification. This modification is an example of a case where the contactless power supply device 20 is configured to include even more power supply units 31 than in the modification 1 shown in FIG.

[0056] For example, in a non-contact power supply device 20 in which the number of integrable units is eight, it is assumed that one relay board 501 can supply power to up to five power supply units 31 due to the tolerance of the AC adapter 60. In this case, one relay board 501 is insufficient for the number of integrable power supply units 31. In this case, the stopping unit 30 adds relay boards 501 and AC adapters 60 to be stored in the housing, and supplies power to the sixth to eighth power supply units 31.

[0057] Here, when there are multiple AC adapters 60, each may be connected to a power outlet provided in the store, but as shown in Fig. 6, a table tap 80 capable of supplying power to multiple AC adapters 60 may be built into the stop unit 30. In this case, a cable 81 of the table tap 80 is pulled out from the stop unit 30.

[0058] The number of power supply units 31 that can be powered by one relay board 501 (five or less in this example) is treated as one set, and the power supply units 31 are linked in a daisy chain. In this modification, the first to fifth power supply units 31 counting from the side closest to the stopper 30 are treated as one set, and the sixth to eighth power supply units 31 are treated as another set.

[0059] The relay board 501 supplies power to the board 401 of the power supply unit 31 that constitutes each set and that is closest to the stop portion 30. That is, the power transmitting terminal 52 of the first relay board 501 is connected by a relay cable 71 to the power receiving terminal 41 of the board 401 that constitutes the first power supply unit 31, counting from the side closest to the stop portion 30. The power transmitting terminal 52 of the second relay board 501 is connected by a relay cable 71 to the power receiving terminal 41 of the board 401 that constitutes the sixth power supply unit 31, counting from the side closest to the stop portion 30.

[0060] The power supply units 31 constituting each set are connected in a daisy chain by connecting the power transmitting terminals 42 and the power receiving terminals 41 of adjacent boards 401 with relay cables 72 of the same length.

[0061] With the above configuration, according to this modification, it is possible to configure a non-contact power supplying device 20 to which a larger number of power supplying units 31 are added.

[0062] Although some embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, and are included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0063] 1 ... Non-contact power supply system, 10…Kart, 11...Base part, 111,112…Front wheels, 113,114…rear wheels, 116... power receiving unit, 117...Mounting part, 12…storage section, 121…surface, 13...Support pillar, 14…Holder, 15…Handle section, 16: Product registration device, 161: Scanner, 162: Display unit, 17...Support part, 20...Non-contact power supply device, 21... power transmission unit, 211... light emitting unit, 22…Housing, 23...Slope portion (end unit), 24...Placement portion, 241...positioning portion, 242, 243…Front wheel path, 244...Entry section, 245, 246…Rear wheelway, 25...Central wheel guidance section, 26, 27…Front wheel guide section (rail), 28, 29…Rear wheel guide section (rail), 30...Stop section (top unit), 31...power supply unit, 40, 401... substrate, 41... power receiving terminal, 42... power transmitting terminal, 50, 501... relay board, 51... power receiving terminal, 52... power transmitting terminal, 60...AC adapter (power adapter), 61...Cable, 71, 72...Relay cable, 80...table tap, 81...cable. [Prior art documents] [Patent documents]

[0064] [Patent Document 1] Patent Publication No. 2021-010272

Claims

1. A contactless power supply device includes a platform on which carts, each having a device and a power receiving unit that receives power to be supplied to the device, are stacked in one direction and placed, and the contactless power supply device transmits power to the power receiving unit of the cart stacked on the platform by contactless power supply, A power supply unit is provided for connecting the carts in a stacking direction in accordance with the number of carts that can be stacked to form the storage section, the power supply unit including a power transmission unit that transmits power to one of the power receiving units by non-contact power supply for each cart; a stop section that determines a stopping position of the cart by abutting a front end of the leading cart traveling on the placement section, the stop section including a relay board that relays power supply from a power source to the power supply unit within a housing; a relay cable that connects a power transmitting terminal of the relay board and a power receiving terminal of a board on which the power transmitting unit is mounted; A non-contact power supply device comprising:

2. a board on which the power transmitting unit of the power supply unit is mounted includes a power transmitting terminal for relaying power transmission to the power receiving terminal of the board of another power supply unit, the power transmitting terminal of the board of the power supply unit is connected in a daisy chain to the power receiving terminal of the board of the adjacent power supply unit by a relay cable; The relay board housed in the housing of the stopper supplies power to the board of the power supply unit adjacent to the stopper. The contactless power supply device according to claim 1 .

3. the stopping unit stores the relay boards in a housing when a tolerance of a power adapter supplying power to the relay boards is insufficient for a number of the power supply units that can be integrated; The power supply units are connected in a daisy chain to one group, the number of which corresponds to the number of units that can be powered by one relay board. The relay board supplies power to the board of the power supply unit that is closest to the stop portion among the power supply units that constitute each set. The non-contact power supply device according to claim 2 .

4. The relay cable is stored under a rail provided in the storage section for regulating the moving direction of the wheels of the cart. The non-contact power supply device according to any one of claims 1 to 3.

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