Electric vehicles

Abstract

To provide an electric vehicle that can narrow a gap between a road surface and a cover member as much as possible, and guide a vehicle body side power reception part to a position where charging is possible with respect to a road surface side power supply part.SOLUTION: An electric vehicle includes: a vehicle body 11; and a vehicle body side charge device 50 that is provided in the vehicle body 11 and enables power supply from a road surface side charge device that is installed at a height higher than the road surface. The vehicle body side charge device 50 includes: a vehicle body side power reception part that faces the road surface; a power reception part support body that supports the vehicle body side power reception part; and a cover member that faces the travel direction of the vehicle body 11 and covers the lateral side of the vehicle body side power reception part. The lower end of the cover member is set at a height lower than the height of a road surface side power supply part. The cover member is provided in a displaceable manner with respect to the power reception part support body. A stopper member 80 which regulates the displacement of the cover member is provided so that a gap formed between the cover member and a pedestal part of the road surface side charge device is less than or equal to a preset set distance in the time of charging.SELECTED DRAWING: Figure 6

Description

[Technical Field]

[0001] The present invention relates to an electric vehicle. [Background technology]

[0002] Known examples of prior art related to electric vehicles include an automatic vehicle charging system and charging device disclosed in Patent Document 1. In the automatic vehicle charging system disclosed in Patent Document 1, a pair of charging contactors for charging the battery are arranged on the base of an automated guided vehicle. A charging contactor and an auxiliary contactor are arranged on a base installed on the travel path of the automated guided vehicle so as to be able to come into contact with the charging contactor on the vehicle. The charging contactor and auxiliary contactor on the base are arranged in a vertical row along the direction of travel of the automated guided vehicle so that the charging contactor on the vehicle can straddle and come into contact with the auxiliary contactor while ensuring a predetermined contact area with the charging contactor on the base at the charging stop position of the automated guided vehicle. When the automated guided vehicle enters and the charging contactor on the vehicle comes into contact with the auxiliary contactor, the charging device begins to energize the charging contactor on the base. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 9-84213 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the automatic vehicle charging system disclosed in Patent Document 1 has a gap that allows a person's finger to fit through during charging, and if a finger were to fit through this gap, there is a risk that the finger would come into contact with the charging contactor. Therefore, this type of vehicle is sometimes provided with a cover member to protect live parts such as the charging contactor. However, if the lower end of the cover member on the entry side of the base on the vehicle's travel path is brought too close to the road surface, the live part on the vehicle side will interfere with the live part on the road surface as it approaches, preventing the two live parts from making contact.

[0005] The present invention has been made in consideration of the above-mentioned problems, and its object is to provide an electric vehicle that can make the gap between the road surface and the cover member as narrow as possible and can guide the vehicle body side power receiving unit to a position where it can be charged relative to the road surface side power supply unit. [Means for solving the problem]

[0006] In order to solve the above problems, the present invention provides an electric vehicle comprising a vehicle body and a vehicle-side charging device provided on the vehicle body and enabling power supply from a road-side charging device installed higher than the road surface, wherein the road-side charging device has a base portion installed on the road surface and having an upper surface higher than the road surface, and a road-side power supply portion provided on the upper surface of the base portion, wherein the vehicle-side charging device has a vehicle-side power receiving portion provided facing the road surface, a power receiving portion support body provided on the vehicle body and supporting the vehicle-side power receiving portion, and a cover member facing the direction of travel of the vehicle body and covering the side of the vehicle-side power receiving portion, wherein the lower end of the cover member is set at a height lower than the height of the road-side power supply portion, the cover member is provided so as to be displaceable relative to the power receiving portion support body, and a stopper member is provided to restrict displacement of the cover member so that the gap formed between the cover member and the base portion during charging is equal to or less than a predetermined set distance.

[0007] In the present invention, when an electric vehicle receives power from a roadside power feeder, the electric vehicle travels toward the roadside power feeder so that the vehicle-body-side power receiving unit moves to a position where power can be supplied from the roadside power feeder. At this time, the lower end of the cover member is guided and displaced by the base, and when the vehicle-body-side power receiving unit moves to a position where power can be supplied from the roadside power feeder, the cover member is positioned near an end of the base in the direction of travel of the electric vehicle. Because the displacement of the cover member is restricted by the stopper member, fingers cannot get into the roadside power feeder or the vehicle-body-side power receiving unit through a gap between the lower end and the end of the cover member.

[0008] In the above-described electric vehicle, the vehicle body side power receiving portion may be configured to contact the road surface side power feeding portion. In this case, the vehicle body side power receiving unit comes into contact with the road surface side power supply unit, thereby enabling charging of the electric vehicle.

[0009] The electric vehicle may further include a fulcrum shaft that allows the cover member to swing in the traveling direction, and a roller member that is provided at the lower end of the cover member and that is capable of rolling in the approaching direction. In this case, the cover member is swingable in the direction of travel, and the roller member is provided at the lower end of the cover member, so that the roller member is guided by the base portion, allowing the cover member to swing smoothly.

[0010] In the above-described electric vehicle, the cover member may be configured to be displaceable relative to the power receiving unit support body by being raised and lowered. In this case, since the cover member can be displaced by raising and lowering, the cover member does not displace in the direction of travel, and fingers cannot get into the road surface side power supply unit and the vehicle body side power receiving unit through the gap between the lower end and the end of the cover member. [Effects of the Invention]

[0011] According to the present invention, it is possible to provide an electric vehicle that can make the gap between the road surface and the cover member as narrow as possible and can guide the vehicle body side power receiving unit to a position where it can be charged relative to the road surface side power supply unit. [Brief explanation of the drawings]

[0012] [Figure 1] 1 is a plan view of an unmanned forklift according to a first embodiment. [Figure 2] 1 is a plan view of an unmanned forklift according to a first embodiment. [Figure 3] 1(a) is a plan view of the road surface side charging device, (b) is a front view of the road surface side charging device, and (c) is a side view of the road surface side charging device. [Figure 4] FIG. 2 is a front view of a vehicle-side charging device provided in the unmanned forklift. [Figure 5] FIG. 2 is a rear view of a vehicle-side charging device provided in the unmanned forklift. [Figure 6] FIG. 2 is a side view of a vehicle-side charging device provided in the unmanned forklift. [Figure 7] (a) is a side view of the vehicle-side charging device as the unmanned forklift moves toward the road-side charging device, (b) is a side view showing the roller member of the cover member being guided by the tapered surface, (c) is a side view showing the vehicle-side power receiving unit moving forward while contacting the road-side power supply unit, and (d) is a side view showing the unmanned forklift stopped and charging. [Figure 8] 10 is a side view of a main part illustrating how to prevent fingers from entering the vehicle-side charging device. FIG. [Figure 9] 10(a) is a side view of the main parts of the vehicle-mounted charging device of the unmanned forklift according to the second embodiment, and FIG. 10(b) is a rear view of the vehicle-mounted charging device of the unmanned forklift according to the same embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0013] (First embodiment) An electric vehicle according to a first embodiment will be described below with reference to the drawings. The electric vehicle of this embodiment is a reach forklift that runs electrically and is an unmanned forklift that can run unmanned.

[0014] As shown in Fig. 1, an unmanned forklift 10 is provided with a pair of reach legs 12 extending forward at the front of a vehicle body 11. As shown in Fig. 2, the reach legs 12 are provided with front wheels 13, and the rear of the vehicle body 11 is provided with rear wheels 14 as steering wheels and drive wheels, and caster wheels 15 for further stabilizing the posture of the vehicle body 11. A load handling device 16 that can move forward and backward relative to the vehicle body 11 is provided between the pair of reach legs 12. The load handling device 16 has outer masts 17, inner masts 18 that move up and down relative to the outer masts 17, lift brackets 19 that move up and down relative to the inner masts 18, and forks 21 attached to the lift brackets 19.

[0015] The unmanned forklift 10 of this embodiment is capable of unmanned travel, but can also be manned, and is provided with a standing driver's seat 22 at the rear right side of the vehicle body 11. A storage frame 23 is provided to the left of the driver's seat 22 in the vehicle body 11. The storage frame 23 mainly houses drive system elements such as an electric motor (not shown). A front frame 24 is disposed in front of the driver's seat 22 and storage frame 23 in the vehicle body 11. Operation levers 25, 26, 27, 28 of the cargo handling device 16 and a display 29 are disposed on the front frame 24.

[0016] The operating lever 25 is a tilt lever for tilt operation, and the operating lever 26 is a reach lever for reach operation. The operating lever 27 is a lift lever for raising and lowering a load, and the operating lever 28 is an accelerator lever for controlling the traveling speed. The display 29 displays various information during driving and also displays a warning screen in the event of an abnormality. The storage frame 23 is provided with a steering handle 31 for steering the rear wheels 14. A battery (not shown) serving as a chargeable and dischargeable power storage device is stored within the front frame 24. A side panel 32 is provided on the right side of the driver's seat 22 so as to surround the right side of the driver's seat 22.

[0017] As shown in Fig. 1, the unmanned forklift 10 of this embodiment is provided with a head guard 33 above the driver's seat 22. The head guard 33 is supported by a left pillar 34 and a right pillar 35 provided on the vehicle body 11. The head guard 33 is provided with a control device 36 for performing unmanned traveling and unmanned loading and unloading operations. The vehicle body 11 is also provided with a magnetic sensor (not shown) for reading magnetic guide lines (not shown) embedded in the road surface, as well as an obstacle sensor (not shown) for detecting obstacles.

[0018] The unmanned forklift 10 of this embodiment is equipped with a vehicle-side charging device 50 on the left side of the vehicle body 11. The vehicle-side charging device 50 is a device for charging the battery by connecting to a road surface-side charging device 40 installed on the road surface. Before explaining the vehicle-side charging device 50, the road surface-side charging device 40 will be explained.

[0019] The roadside charging device 40 supplies power to charge the battery of the unmanned forklift 10. The roadside charging device 40 includes a base 41 fixed to the road surface and a pair of roadside electrodes 42 attached to the base 41 as a roadside power supply. The base 41 is generally rectangular in plan view and made of an insulating material. The base 41 includes a pair of short sides 43, a pair of long sides 44, an upper surface 45, a pair of first tapered surfaces 46, and a pair of second tapered surfaces 47. The upper surface 45 is a rectangular flat surface located higher than the road surface. The first tapered surface 46 is an inclined surface extending from the short sides 43 toward the upper surface 45. The first tapered surface 46 serves as a guide surface for guiding the vehicle-side charging device 50 and also helps prevent an operator from tripping when walking. The second tapered surface 47 extends from the long sides 44 toward the upper surface 45.

[0020] The pair of road surface side electrodes 42 are made of a conductive material and are embedded in the base 41 so as to extend along the longitudinal direction of the base 41 on the upper surface 45. One road surface side electrode 42 is a positive electrode, and the other road surface side electrode 42 is a negative electrode. The upper surfaces of the road surface side electrodes 42 are exposed and are at approximately the same height as the upper surface 45. The pair of road surface side electrodes 42 are electrically connected to an external power source (not shown).

[0021] Next, the vehicle-side charging device 50 will be described. The vehicle-side charging device 50 has a main body 51 as a power receiving unit support body, a pair of vehicle-side electrodes 52 as vehicle-side power receiving units, a first cover member 53, a second cover member 54, and a third cover member 55. The main body 51 is attached to the lower left side of the storage frame 23 of the vehicle body 11. The main body 51 has a front wall surface 56, a rear wall surface 57, a side wall surface 58, an upper wall surface 59, and a lower wall surface 60. The front wall surface 56 is the surface facing the front of the unmanned forklift 10, and the rear wall surface 57 is the surface facing the rear. The side wall surface 58 is the surface facing the left side of the unmanned forklift 10. The upper wall surface 59 is an inclined surface that slopes downward from right to left. The lower wall surface 60 is the surface that faces the road surface.

[0022] The main body 51 is provided with a pair of vehicle-body-side electrodes 52. The pair of vehicle-body-side electrodes 52 are formed from a conductive material and are provided so as to be in contact with the pair of road surface-side electrodes 42. One vehicle-body-side electrode 52 is a positive electrode, and the other vehicle-body-side electrode 52 is a negative electrode. The vehicle-body-side electrode 52 includes an electrode body bracket 61, an electrode body 62, and a compression coil spring 63.

[0023] The electrode body bracket 61 is attached to the lower wall surface 60 of the main body 51. The electrode body 62 is suspended from the electrode body bracket 61 so that it can be raised and lowered. The electrode body 62 is approximately rectangular and has an upper surface 64, a lower surface 65, a front surface 66, a rear surface 67, and a pair of side surfaces 68. A guide groove 69 is formed in the side surface 68 of the electrode body 62, and a guide piece (not shown) on the electrode body bracket 61 moves up and down the guide groove 69. The lower surface 65 of the electrode body 62 is the contact surface with the road surface-side electrode 42, and a chamfered surface 72 is formed between the lower surface 65 and the front surface 66 of the electrode body 62. A chamfered surface 73 is formed between the lower surface 65 and the rear surface 67. The compression coil spring 63 is provided between the upper surface 64 of the electrode body 62 and the electrode body bracket 61, and applies a biasing force to the electrode body 62, biasing the electrode body 62 downward. When the electrode body 62 is at the lowest position due to the biasing force of the compression coil spring 63, the lower surface 65 is higher than the road surface and lower than the upper surface 45 of the road surface side electrode 42.

[0024] Next, the first cover member 53 will be described. The first cover member 53 is a plate-shaped member made of resin and has an upper edge portion 74, a lower edge portion 75, and right and left edge portions 76 and 77. The upper edge portion 74 of the first cover member 53 is connected to the main body 51 near the bottom of the front wall surface 56 via a fulcrum shaft 78. Therefore, the first cover member 53 can swing back and forth around the fulcrum shaft 78. The lower edge portion 75 of the first cover member 53 is higher than the road surface and lower than the upper surface 45 of the road surface-side electrode 42. In this embodiment, the lower edge portion 75 is provided with a roller member 79, which can roll in the forward and backward directions, i.e., the traveling direction. A stopper member 80 is provided on the lower wall surface 60 of the main body 51. The stopper member 80 is provided to prevent excessive displacement of the first cover member 53 toward the main body 51. In other words, the stopper member 80 keeps the gap formed between the first cover member 53 and the base portion 41 during charging to a preset distance or less.

[0025] Next, the second cover member 54 will be described. The second cover member 54 is a plate-shaped member made of resin and has an upper edge portion 81, a lower edge portion 82, and right and left edge portions 83 and 84. The upper edge portion 81 of the second cover member 54 is connected to the main body 51 near the bottom of the rear wall surface 57 via a fulcrum shaft 85. Therefore, the second cover member 54 can swing back and forth around the fulcrum shaft 85. The height of the lower edge portion 82 of the second cover member 54 is higher than the road surface and lower than the upper surface 45 of the road surface-side electrode 42. Incidentally, the height of the lower edge portion 82 of the second cover member 54 is the same as the height of the lower edge portion 75 of the first cover member 53. In this embodiment, the lower edge portion 82 is provided with a roller member 86, which can roll in the forward and backward directions, i.e., the traveling direction. A stopper member 87 is provided on the lower wall surface 60 of the main body 51. The stopper member 87 is provided to restrict excessive displacement of the second cover member 54 toward the main body portion 51. In other words, the stopper member 87 keeps the gap formed between the second cover member 54 and the base portion 41 during charging at a preset distance or less.

[0026] Next, the third cover member 55 will be described. The third cover member 55 is a plate-shaped member made of resin, and has an upper edge portion 91 which is the upper end, a lower edge portion 92 which is the lower end, and a right edge portion 93 and a left edge portion 94 which are side edges. The upper edge portion 91 of the third cover member 55 is attached near the lower part of the side wall surface 58. The first cover member 53 and the second cover member 54 are movable cover members that swing back and forth, but the third cover member 55 is a fixed cover member. The height of the lower edge portion 92 of the third cover member 55 is the same as the height of the lower edge portion 75 of the first cover member 53 and the second cover member 54.

[0027] In this way, the front, rear, and left sides of the main body 51 of the vehicle-side charging device 50 are covered with cover members (first cover member 53, second cover member 54, and third cover member 55). A guard member 95 is provided in front of the vehicle-side charging device 50 on the vehicle body 11. The guard member 95 makes it difficult for other objects to interfere with the vehicle-side charging device 50 when the unmanned forklift 10 is traveling. In other words, the guard member 95 is a protective member that protects the vehicle-side charging device 50.

[0028] Next, charging of the unmanned forklift 10 of this embodiment will be described. When the remaining battery capacity decreases, the control device 36 determines that charging of the battery is necessary and causes the unmanned forklift 10 to travel toward the roadside charging device 40. Information regarding the location of the roadside charging device 40 is stored in advance in the control device 36. In this embodiment, a case will be described in which the unmanned forklift 10 moves backward and the vehicle-side charging device 50 connects to the roadside charging device 40.

[0029] As shown in FIG. 7(a), the unmanned forklift 10 travels so that the roadside charging device 40 is located behind the vehicle-side charging device 50. At this time, the longitudinal direction of the electrode body 62 of the vehicle-side charging device 50 substantially coincides with the longitudinal direction of the roadside electrode 42 of the roadside charging device 40. As the unmanned forklift 10 continues traveling, as shown in FIG. 7(b), the roller member 86 of the second cover member 54 abuts against the first tapered surface 46, and the second cover member 54 is guided by the first tapered surface 46 and tilts toward the main body 51. In other words, the lower side portion 82 of the second cover member 54 is guided by the first tapered surface 46 and displaced.

[0030] As the unmanned forklift 10 continues to travel, the roller members 86 of the second cover member 54 roll on the upper surface 45 of the base portion 41, as shown in Figure 7(c). The vehicle-body-side electrode 52 also comes into sliding contact with the road surface-side electrode 42. At this time, the electrode body 62 of the vehicle-body-side electrode 52 is urged downward by the urging force of the compression coil spring 63, and is always in contact with the road surface-side electrode 42, but charging does not start.

[0031] 7(d), when the vehicle-side electrode 52 reaches a predetermined position relative to the road surface-side electrode 42, the unmanned forklift 10 stops. The predetermined position is a position where the vehicle-side electrode 52 can receive power from the road surface-side electrode 42. When the unmanned forklift 10 stops, the electrode body 62 of the vehicle-side electrode 52 is located approximately near the center of the road surface-side electrode 42 in the longitudinal direction. The first cover member 53 and the second cover member 54 do not interfere with the first tapered surface 46. In other words, the first cover member 53 and the second cover member 54 are located near the end of the base portion 41 in the traveling direction of the unmanned forklift 10. When the unmanned forklift 10 stops, the control device 36 issues a command to start charging the battery, and the vehicle-side charging device 50 receives power from the road surface-side charging device 40 and starts charging the battery.

[0032] Now, consider a case where, for example, a person tries to insert a finger from the rear of the vehicle-side charging device 50 toward the road-side electrode 42 and the vehicle-side electrode 52 while the battery is being charged. In this case, as shown in FIG. 8 , the finger F presses the second cover member 54, causing the second cover member 54 to tilt toward the main body 51. However, excessive tilting of the second cover member 54 is prevented by the second cover member 54 abutting against the stopper member 87. That is, the stopper member 87 keeps the gap formed between the second cover member 54 and the base 41 during charging to a predetermined distance or less. Therefore, no gap is created between the second cover member 54 and the base 41 into which the finger F can slip. Note that, even if a person tries to insert a finger F into the front first cover member 53, the tilting of the first cover member 53 is prevented by the stopper member 80, just as with the second cover member 54.

[0033] When charging of the battery is complete, the control device 36 stops power supply from the roadside charging device 40 and resumes traveling of the unmanned forklift 10. As the unmanned forklift 10 travels, the vehicle-side charging device 50 detaches from the roadside charging device 40. When the vehicle-side charging device 50 is detached from the roadside charging device 40, the unmanned forklift 10 may travel either forward or backward.

[0034] The unmanned forklift 10 of this embodiment has the following advantages. (1) When the unmanned forklift 10 receives power from the road surface-side electrode 42, the unmanned forklift 10 travels toward the road surface-side electrode 42 so that the vehicle body-side electrode 52 moves to a position where power can be supplied from the road surface-side electrode 42. At this time, the lower end of the first cover member 53 (second cover member 54) is guided and displaced by the first tapered surface 46 of the base portion 41, and when the vehicle body-side electrode 52 moves to a position where power can be supplied from the road surface-side electrode 42, the first cover member 53 and the second cover member 54 are positioned near the end of the base portion 41 in the traveling direction of the unmanned forklift 10. Because the displacement of the first cover member 53 (second cover member 54) is restricted by the stopper member 80 (87), a finger F will not get into the road surface-side electrode 42 or the vehicle body-side electrode 52 through a gap between the lower end of the first cover member 53 (second cover member 54) and the end of the base portion 41.

[0035] (2) The stopper member 80 (87) sets the gap formed between the first cover member 53 (second cover member 54) and the base portion 41 during charging to a preset distance or less. Therefore, the stopper member 80 (87) can set the gap formed between the first cover member 53 (second cover member 54) and the base portion 41 to an intended distance. The gap distance is, for example, such that a person's finger cannot get stuck in it, and is, for example, 10 mm or less.

[0036] (3) The first cover member 53 (second cover member 54) has a fulcrum shaft 78 (85) that allows it to swing in the direction of travel, and a roller member 79 (86) that is provided on the lower side portion 75 (82) of the first cover member 53 (second cover member 54) and is capable of rolling in the approach direction. Therefore, the roller member 79 (86) is guided by the first tapered surface 46, allowing the first cover member 53 (second cover member 54) to swing smoothly. The roller member 79 (86) rolls on the upper surface 45 of the base portion 41, but may also roll on the road surface side electrode 42.

[0037] (Second embodiment) Next, an unmanned forklift according to a second embodiment will be described. In this embodiment, the configuration of the cover member is different from that of the first embodiment. In this embodiment, the same configuration as in the first embodiment will be referred to and the same reference numerals will be used.

[0038] As shown in Figures 9(a) and 9(b), the vehicle-mounted charging device 50 of the unmanned forklift 100 has a cover member 101. The cover member 101 is a plate-shaped member made of resin, and has an upper edge portion 102 which is the upper end, a lower edge portion 103 which is the lower end, and a right edge portion 104 and a left edge portion 105 which are side edges. A guide groove 107 extending in the vertical direction is provided on the rear wall surface 57 of the main body 51, and a protrusion 108 of the cover member 101 is guided by the guide groove 107. Therefore, the cover member 101 is suspended relative to the main body 51 so as to be slidable in the vertical direction.

[0039] The height of the bottom edge 103 of the cover member 101 is higher than the road surface and lower than the top surface 45 of the road surface-side electrode 42. The bottom edge 103 is provided with a roller member 106, which can roll in the forward and backward direction, which is the direction of travel. The lower end of a guide groove 107 of the main body 51 engages with a protrusion 108 and functions as a stopper member. In other words, the guide groove 107 is provided to restrict excessive displacement of the cover member 101 toward the road surface. In other words, the guide groove 107 as a stopper member keeps the gap formed between the cover member 101 and the base 41 during charging to a preset distance or less.

[0040] In this embodiment, the cover member 101 moves up and down in accordance with the first tapered surface 46 and the upper surface 45 of the base portion 41 of the roadside charging device 40. Furthermore, the gap formed between the cover member 101 and the base portion 41 during charging is kept below a preset distance. Because the cover member 101 can be displaced by moving up and down, the cover member 101 does not move in the traveling direction, and fingers F will not get into the roadside electrode 42 and the vehicle body side electrode 52 through the gap between the lower end of the cover member 101 and the end of the base portion 41.

[0041] The present invention is not limited to the above-described embodiment, and various modifications are possible within the scope of the spirit of the invention. For example, the following modifications may be made.

[0042] In the above embodiment, an unmanned forklift is described as an example of an electric vehicle, but the electric vehicle is not limited to this. The electric vehicle may be any vehicle that runs on power from a rechargeable battery, such as an automated guided vehicle or an electric car. In the above embodiment, the vehicle-side charging device is configured to charge by contacting the roadside charging device. However, this is not limiting. The roadside charging device and the vehicle-side charging device may be configured to charge in a non-contact manner. In this case, the roadside power supply unit of the roadside charging device and the vehicle-side power receiving unit of the vehicle-side charging device may include, for example, a non-contact power supply coil and a non-contact power receiving coil. In the above embodiment, the vehicle-side charging device has a first cover member and a second cover member as cover members, but this is not limited to this. It is sufficient that there is at least one cover member in the traveling direction of the electric vehicle. In the above embodiment, the cover member is provided with a roller member, but this is not limited to this. The roller member is not an essential component, and for example, a cover member without a roller member may be used. A non-rolling spherical member may be used instead of the roller member. In the above embodiment, the vehicle-side charging device is provided on the left side of the vehicle, but this is not limited to this. The vehicle-side charging device may be provided, for example, on the rear or underside of the vehicle. The vehicle-side charging device may be provided in a position where it can receive power from the road-side charging device. In the above embodiment, the cover member is made of resin, but this is not limiting. The cover member may be made of metal such as iron, or wood, and the material of the cover member is not limited. In the above embodiment, the base of the roadside charging device has a tapered surface, but this is not limited to this. For example, the roadside charging device may have a base without a tapered surface, and the base may have a shape that allows at least deformation when the cover member passes through the base. [Explanation of symbols]

[0043] 10, 100 Unmanned forklift (electric vehicle) 11 Body 13 Front wheel 14 rear wheels 15 Caster wheels 16 Cargo handling equipment 21 Fork 33 Head Guard 36 Control device 40 Roadside charging device 41 Base 42 Road surface electrode (road surface power supply part) 46 First tapered surface (guide surface) 47 Second tapered surface 50 Vehicle-side charging device 51 Main body (power receiving unit support) 52 Vehicle body side electrode (vehicle body side power receiving part) 53 First cover member 54 Second cover member 55 Third cover member 61 Electrode bracket 62 Electrode body 63 Compression coil spring 78, 85 Fulcrum axis 79, 86, 106 Roller members 80, 87 Stopper member 86 Roller member (second cover member) 95 Guard material 101 Cover member F finger

Claims

1. The car body and a vehicle-side charging device provided on the vehicle body and capable of supplying power from a road-side charging device installed higher than the road surface; The road surface side charging device is a base portion that is installed on the road surface and has an upper surface that is higher than the road surface; a road surface side power supply unit provided on an upper surface of the base, The vehicle-side charging device a vehicle-side power receiving unit provided facing the road surface; a power receiving unit support member provided on the vehicle body and supporting the vehicle body-side power receiving unit; a cover member that faces the traveling direction of the vehicle body and covers a side of the vehicle body-side power receiving unit, a lower end of the cover member is set at a height lower than a height of the road surface side power feeding unit, the cover member is provided so as to be displaceable relative to the power receiving unit support body, An electric vehicle characterized in that a stopper member is provided to regulate displacement of the cover member so that a gap formed between the cover member and the base portion during charging is equal to or less than a preset distance.

2. 2. The electric vehicle according to claim 1, wherein the vehicle body side power receiving portion is in contact with the road surface side power supply portion.

3. a fulcrum shaft that allows the cover member to swing in the traveling direction; 3. The electric vehicle according to claim 1, further comprising a roller member provided at a lower end of the cover member and capable of rolling in the insertion direction.

4. 3. The electric vehicle according to claim 1, wherein the cover member is displaceable relative to the power receiving portion support member by being raised and lowered.

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