Current collection device and trolley system

Abstract

The problem addressed by the present disclosure is to make it more difficult for a first current collector and a second current collector to lose contact with a trolley wire. A current collection device (1) according to the present disclosure is provided with: a first current collector (2A) and a second current collector (2B); an arm (6); a first elastic member (91); a second elastic member (92); and a third elastic member (93). The first elastic member (91) applies an elastic force to the first current collector (2A) in a direction in which the first current collector (2A) approaches the trolley wire. The second elastic member (92) applies an elastic force to the second current collector (2B) in a direction in which the second current collector (2B) approaches the trolley wire. The third elastic member (93) applies an elastic force to the first current collector (2A) and the second current collector (2B) in a direction in which the first current collector (2A) and the second current collector (2B) approach the trolley wire.

Description

Current collector and trolley system

[0001] The present disclosure relates generally to current collectors and trolley systems, and more particularly to current collectors that transfer power from contact wires to moving equipment, and trolley systems that include current collectors.

[0002] Patent Document 1 describes a current collector for trolley wires (current collector) that transmits power to mobile equipment such as self-propelled conveyance equipment. In the current collector for trolley wires described in Patent Document 1, compression springs are interposed between the bottom surface of the holder receptacle and the underside of the brush holder at points before and after the brush movement direction, thereby equalizing the contact pressure before and after the brush movement direction.

[0003] Japanese Patent Application Publication No. 07-111706

[0004] In recent years, a current collecting device has been provided in which multiple current collectors (first and second current collectors) are brought into contact with each contact wire to supply power. In such a current collecting device, for example, if each contact wire is configured by connecting multiple contact conductors, a step may occur between two adjacent contact conductors, causing one of the current collectors to separate from the contact wire.

[0005] An object of the present disclosure is to provide a current collector and a trolley system in which the first current collector and the second current collector are less likely to come off the trolley wire.

[0006] A current collecting device according to one aspect of the present disclosure is a current collecting device that transmits power from a trolley wire to a mobile device. The current collecting device includes first and second current collectors, an arm, a first elastic member, a second elastic member, and a third elastic member. The first and second current collectors contact the trolley wire. The arm supports the first and second current collectors. The first elastic member is disposed between the first current collector and the arm and applies an elastic force to the first current collector in a direction in which the first current collector approaches the trolley wire. The second elastic member is disposed between the second current collector and the arm and applies an elastic force to the second current collector in a direction in which the second current collector approaches the trolley wire. The third elastic member is disposed on the opposite side of the arm from the first and second current collectors and applies an elastic force to the first and second current collectors in a direction in which the first and second current collectors approach the trolley wire.

[0007] A trolley system according to one aspect of the present disclosure includes the current collector and the trolley wire.

[0008] Fig. 1 is a perspective view of a current collector according to an embodiment. Fig. 2 is a front view of the same current collector. Fig. 3 is an exploded perspective view of the same current collector. Fig. 4 is another exploded perspective view of the same current collector. Fig. 5 is a perspective view of a current collector according to a first modified example of the embodiment.

[0009] Hereinafter, a current collector and a trolley system according to an embodiment will be described with reference to the drawings. The drawings referred to in the following embodiments are schematic diagrams, and the sizes and thicknesses of the components in the drawings do not necessarily reflect the actual dimensions, and the ratios of sizes and thicknesses between the components do not necessarily reflect the actual dimensional ratios.

[0010] (Embodiment) (1) Overview First, an overview of a current collector 1 and a trolley system 100 according to an embodiment will be described with reference to FIGS. 1 to 3. FIG.

[0011] The current collector 1 according to the embodiment is attached to a moving device (not shown). The moving device is a device that moves using electric power, such as a self-propelled cart or hoist. The moving device receives power from a trolley wire T1 installed on a rail. The moving device moves along the rail using the power thus obtained as a power source.

[0012] In the following description, unless otherwise specified, the X-axis direction in each drawing is defined as the left-right direction, the Y-axis direction as the front-rear direction, and the Z-axis direction as the up-down direction. Furthermore, the positive direction of the X-axis direction is defined as the left side, the positive direction of the Y-axis direction as the front side, and the positive direction of the Z-axis direction as the top side. However, these directions are merely examples and are not intended to limit the direction in which the current collector 1 is used. For example, the current collector 1 may be used so that the positive direction of the Y-axis is the top side. Furthermore, the arrows indicating the various directions in the drawings are merely shown for explanatory purposes and do not have any physical substance.

[0013] A current collector 1 according to this embodiment transmits power from a trolley wire T1 (see FIG. 2 ) to a mobile device. As shown in FIGS. 1 to 3 , the current collector 1 includes a first current collector 2A, a second current collector 2B, an arm 6, a first elastic member 91, a second elastic member 92, and a third elastic member 93. The first current collector 2A and the second current collector 2B contact the trolley wire T1. The arm 6 supports the first current collector 2A and the second current collector 2B. The first elastic member 91 is disposed between the first current collector 2A and the arm 6 and applies an elastic force to the first current collector 2A in a direction in which the first current collector 2A approaches the trolley wire T1. The second elastic member 92 is disposed between the second current collector 2B and the arm 6 and applies an elastic force to the second current collector 2B in a direction in which the second current collector 2B approaches the trolley wire T1. The third elastic member 93 is positioned on the opposite side of the arm 6 from the first current collector 2A and the second current collector 2B, and applies an elastic force to the first current collector 2A and the second current collector 2B in a direction that moves the first current collector 2A and the second current collector 2B closer to the trolley wire T1.

[0014] According to the current collector 1 of the embodiment, the first elastic member 91 applies an elastic force to the first current collector 2A in a direction that moves it closer to the trolley wire T1, and the second elastic member 92 applies an elastic force to the second current collector 2B in a direction that moves it closer to the trolley wire T1, so that it is possible to individually adjust the positions of the first current collector 2A and the second current collector 2B relative to the trolley wire T1. This has the advantage that the first current collector 2A and the second current collector 2B are less likely to come off the trolley wire T1 even when a step S1 is generated between the multiple contact conductors T11, T12 that make up the trolley wire T1.

[0015] 2, the trolley system 100 according to the embodiment includes a current collector 1 and a trolley wire T1. The trolley system 100 according to the embodiment includes the current collector 1, which has the advantage that the first current collector 2A and the second current collector 2B are less likely to separate from the trolley wire T1 even when a step S1 occurs between the multiple contact conductors T11, T12 that make up the trolley wire T1.

[0016] (2) Details Next, each component of the current collector 1 and the trolley system 100 according to the embodiment will be described with reference to FIGS. 1 to 4. FIG.

[0017] As shown in Figures 1 and 2, the trolley system 100 according to the embodiment includes a plurality of current collectors 1 (three in this embodiment) and a plurality of trolley wires T1 (three in this embodiment). Note that Figure 2 illustrates only one of the plurality of trolley wires T1. Furthermore, since the configurations of the plurality of current collectors 1 are common, the following description will focus on one current collector 1. Furthermore, since the configurations of the plurality of trolley wires T1 are also common, the following description will focus on one trolley wire T1.

[0018] (2.1) Current Collector The current collector 1 transmits power from the trolley wire T1 to the mobile device. As shown in Figures 1 to 3, the current collector 1 includes a first current collector 2A, a second current collector 2B, a first connector portion 3A, a second connector portion 3B, a fixing portion F1, an arm 6, a base 7, a first cable 8A, and a second cable 8B. The current collector 1 also includes a first elastic member 91, a second elastic member 92, and a third elastic member 93.

[0019] (2.1.1) First Current Collector The first current collector 2A contacts the trolley wire T1. As shown in FIG. 3 , the first current collector 2A has a contact portion 21, a cover 22, a first holding portion 23A, and a shaft portion 24.

[0020] The contact portion 21 is a conductor. The contact portion 21 is made of, for example, a metal material. The contact portion 21 is a member that comes into contact with the trolley wire T1 (see FIG. 2 ). The longitudinal direction of the contact portion 21 is along the X-axis direction. The shape of the contact portion 21 is trapezoidal when viewed from the positive side of the Z-axis. Therefore, the portion of the contact portion 21 that corresponds to the upper base of the trapezoid comes into contact with the trolley wire T1.

[0021] The cover 22 has electrical insulation properties. The cover 22 is made of, for example, synthetic resin. The cover 22 covers a portion of the contact portion 21. One end of the contact portion 21 (the positive side of the Y-axis) is exposed to the outside of the cover 22.

[0022] The first holding portion 23A holds the first current collector 2A. The first holding portion 23A is made of, for example, synthetic resin. The first holding portion 23A includes a connecting portion 231, a pillar portion 232, and two protruding pieces 233.

[0023] The connecting portion 231 is connected to the cover 22. More specifically, the shaft portion 24 is passed through through holes provided in the connecting portion 231 and the cover 22, thereby connecting the connecting portion 231 to the cover 22. The cover 22 is rotatable together with the contact portion 21 around the connection point (shaft portion 24) with the connecting portion 231. The shaft portion 24 is, for example, a screw.

[0024] The pillar portion 232 has a cylindrical shape. The longitudinal direction of the pillar portion 232 is along the Y-axis direction. The pillar portion 232 protrudes from the connecting portion 231 in the negative direction of the Y-axis. The pillar portion 232 has a slit 2320 at the tip (negative side of the Y-axis) on the side opposite the connecting portion 231 side. The slit 2320 is a recess that is recessed from the tip of the pillar portion 232 toward the connecting portion 231 side. In this embodiment, the pillar portion 232 of the first holding portion 23A corresponds to the first pillar portion.

[0025] The two protrusions 233 protrude from the tip of the column 232 on the side opposite the connecting portion 231 in a direction intersecting the longitudinal direction of the column 232. The protrusion direction (leftward) of one of the two protrusions 233 is opposite the protrusion direction (rightward) of the other protrusion 233. The slit 2320 is formed between the two protrusions 233.

[0026] 3, the first current collector 2A has a first end 201 and a second end 202. The first end 201 is the end of the first current collector 2A on the positive side of the X-axis and faces the second current collector 2B. The second end 202 is the end of the first current collector 2A on the negative side of the X-axis and faces the opposite side from the first end 201. A first cable 8A (described later) is drawn out from the second end 202 of the first current collector 2A in the negative direction of the Y-axis.

[0027] (2.1.2) Second Current Collector The second current collector 2B contacts the trolley wire T1. As shown in FIG. 3 , the second current collector 2B has a contact portion 21, a cover 22, a second holding portion 23B, and a shaft portion 24.

[0028] The contact portion 21 is a conductor. The contact portion 21 is made of, for example, a metal material. The contact portion 21 is a member that comes into contact with the trolley wire T1 (see FIG. 2 ). The longitudinal direction of the contact portion 21 is along the X-axis direction. The shape of the contact portion 21 is trapezoidal when viewed from the positive side of the Z-axis. Therefore, the portion of the contact portion 21 that corresponds to the upper base of the trapezoid comes into contact with the trolley wire T1.

[0029] The cover 22 has electrical insulation properties. The cover 22 is made of, for example, synthetic resin. The cover 22 covers a portion of the contact portion 21. One end of the contact portion 21 (the positive side of the Y-axis) is exposed to the outside of the cover 22.

[0030] The second holding portion 23B holds the second current collector 2B. The second holding portion 23B is made of, for example, synthetic resin. The second holding portion 23B includes a connecting portion 231, a pillar portion 232, and two protruding pieces 233.

[0031] The connecting portion 231 is connected to the cover 22. More specifically, the shaft portion 24 is passed through through holes provided in the connecting portion 231 and the cover 22, thereby connecting the connecting portion 231 to the cover 22. The cover 22 is rotatable together with the contact portion 21 around the connection point (shaft portion 24) with the connecting portion 231. The shaft portion 24 is, for example, a screw.

[0032] The pillar portion 232 is cylindrical in shape. The longitudinal direction of the pillar portion 232 is along the Y-axis direction. The pillar portion 232 protrudes from the connecting portion 231 in the negative direction of the Y-axis. The pillar portion 232 has a slit 2320 at the tip (negative side of the Y-axis) on the side opposite the connecting portion 231. The slit 2320 is a recess that is recessed from the tip of the pillar portion 232 toward the connecting portion 231. In this embodiment, the pillar portion 232 of the second holding portion 23B corresponds to the second pillar portion.

[0033] The two protrusions 233 protrude from the tip of the column 232 on the side opposite the connecting portion 231 in a direction intersecting the longitudinal direction of the column 232. The protrusion direction (leftward) of one of the two protrusions 233 is opposite the protrusion direction (rightward) of the other protrusion 233. The slit 2320 is formed between the two protrusions 233.

[0034] 3, the second current collector 2B has a third end 203 and a fourth end 204. The third end 203 is the end of the second current collector 2B on the negative side of the X-axis and faces the first current collector 2A. The fourth end 204 is the end of the second current collector 2B on the positive side of the X-axis and faces the opposite side to the third end 203. A second cable 8B, which will be described later, is drawn out from the fourth end 204 of the second current collector 2B in the positive direction of the X-axis.

[0035] (2.1.3) Connector Section The first connector section 3A corresponds to the first current collector 2A. The first connector section 3A is formed integrally with the cover 22 of the first current collector 2A.

[0036] The second connector portion 3B corresponds to the second current collector 2B and is formed integrally with the cover 22 of the second current collector 2B.

[0037] The first connector portion 3A and the second connector portion 3B have a common configuration, and the following description will focus on the first connector portion 3A.

[0038] As shown in FIG. 3, the first connector portion 3A has an outer shell 31 and terminals (not shown) housed inside the outer shell 31.

[0039] The outer shell 31 has electrical insulation properties. The outer shell 31 is formed, for example, from a synthetic resin. The outer shell 31 protrudes from the cover 22 of the first current collector 2A. More specifically, the outer shell 31 protrudes from the cover 22 in the negative direction of the Y axis. The terminal is electrically connected to the contact portion 21 of the first current collector 2A. The first connector portion 3A is configured to be connectable to the first cable 8A.

[0040] In the second connector portion 3B, the outer shell 31 protrudes from the cover 22 of the second current collector 2B in the positive direction of the X-axis. The second connector portion 3B is configured to be connectable to a second cable 8B.

[0041] (2.1.4) Cable The first cable 8A corresponds to the first connector portion 3A. The first cable 8A is detachably connected to the first connector portion 3A.

[0042] The second cable 8B corresponds to the second connector portion 3B. The second cable 8B is detachably connected to the second connector portion 3B.

[0043] The first cable 8A and the second cable 8B have a common configuration. The following description will focus on the first cable 8A.

[0044] As shown in FIG. 3 , the first cable 8A has a cable main body 81A and a connector portion 82. The cable main body 81A includes a linear conductor and an insulating coating covering the conductor. The cable main body 81A is flexible. The connector portion 82 is connected to one end of the cable main body 81A. The connector portion 82 is configured to be connectable to the first connector portion 3A. The connector portion 82 is also configured to be disconnectable from the first connector portion 3A. More specifically, the connector portion 82 and the first connector portion 3A are connected by pushing the connector portion 82 into the first connector portion 3A. The connection between the connector portion 82 and the first connector portion 3A is also disconnected by pulling the connector portion 82 out of the first connector portion 3A.

[0045] In this embodiment, the cable main body 81A of the first cable 8A corresponds to the first power feed line. That is, the cable main body 81A of the first cable 8A feeds power to the first current collector 2A. Also, in this embodiment, the cable main body 81B of the second cable 8B corresponds to the second power feed line. That is, the cable main body 81B of the second cable 8B feeds power to the second current collector 2B, unlike the cable main body 81A of the first cable 8A.

[0046] (2.1.5) Arm The first current collector 2A and the second current collector 2B are attached to the arm 6. That is, the arm 6 supports the first current collector 2A and the second current collector 2B.

[0047] The arm 6 also holds the first cable 8A and the second cable 8B. In other words, the cable main 81A (first power feed line) of the first cable 8A and the cable main 81B (second power feed line) of the second cable 8B are held by the arm 6. In this embodiment, the cable main 81A of the first cable 8A, which corresponds to the first power feed line, and the cable main 81B of the second cable 8B, which corresponds to the second power feed line, are held by the arm 6. However, it is sufficient that at least one of the cable main 81A of the first cable 8A and the cable main 81B of the second cable 8B is held by the arm 6.

[0048] As shown in Figure 3, the arm 6 has two first ribs 61, two second ribs 62, a third rib 63, an arm main body 64, a wall portion 65, a first mounting portion 66, a second mounting portion 67, a guide portion 68, and a spring arrangement portion 69.

[0049] The longitudinal direction of the arm body 64 is along the X-axis direction. The arm body 64 has a rectangular parallelepiped shape.

[0050] The arm body 64 has a first surface 64a and a second surface 64b. The first surface 64a is the surface on the positive side of the Y axis (front surface). The first surface 64a faces the trolley wire T1 (see FIG. 2). The second surface 64b is the surface on the opposite side of the first surface 64a (rear surface). The second surface 64b faces the base 7.

[0051] The arm body 64 has a first through-hole 641 , a second through-hole (not shown), and a third through-hole 643 .

[0052] The first through-hole 641 is provided in the first surface 64a and passes through the arm body 64 in the Y-axis direction.

[0053] The second through-hole is provided in the first surface 64a and passes through the arm main body 64 in the Y-axis direction. The second through-hole is also provided on the positive side of the X-axis with respect to the first through-hole 641.

[0054] The third through-hole 643 passes through the arm body 64 in the Z-axis direction. The first attachment portion 66 passes through the third through-hole 643.

[0055] The wall portion 65 protrudes from the first surface 64a in the normal direction of the first surface 64a. That is, the wall portion 65 protrudes from the first surface 64a in the positive direction of the Y axis. The wall portion 65 protrudes from the end of the arm main body 64 on the positive side of the Z axis. The thickness direction of the wall portion 65 is along the Z axis direction. The longitudinal direction of the wall portion 65 is along the X axis direction.

[0056] Each of the two first ribs 61 protrudes from the wall portion 65. More specifically, each first rib 61 protrudes from the wall portion 65 in the negative direction of the Z axis. Each first rib 61 is cylindrical in shape. The tip of each first rib 61 is rounded and formed into a dome shape.

[0057] The two first ribs 61 are aligned in the X-axis direction. Hereinafter, one of the two first ribs 61 will be referred to as the first rib 61a, and the other will be referred to as the first rib 61b. The first rib 61b is provided on the positive side of the X-axis relative to the first rib 61a.

[0058] A portion of the first cable 8A is sandwiched between the first surface 64a and the first rib 61. Furthermore, a portion of the first cable 8A is sandwiched between the first rib 61 and the third rib 63. The first cable 8A is arranged along the wall portion 65. The longitudinal direction of the wall portion 65 is aligned with the extension direction (X-axis direction) of the first cable 8A between the first surface 64a and the first rib 61.

[0059] Each of the two second ribs 62 protrudes from the first surface 64a along the normal direction of the first surface 64a. That is, each second rib 62 protrudes from the first surface 64a along the positive direction of the Y axis. Each second rib 62 protrudes from the end of the arm main body 64 on the negative side of the Z axis. Each second rib 62 is shaped like a plate. The thickness direction of each second rib 62 is along the Z axis direction. Each second rib 62 faces the wall portion 65.

[0060] The two second ribs 62 are aligned in the X-axis direction. Hereinafter, one of the two second ribs 62 will be referred to as the second rib 62a, and the other will be referred to as the second rib 62b. The second rib 62b is provided on the positive side of the X-axis relative to the second rib 62a.

[0061] The first rib 61a is provided at a position that is visible through the gap between the two second ribs 62. Specifically, when viewed from the negative side (bottom side) of the Z axis, the first rib 61a is provided at a position that is visible through the gap between the two second ribs 62. When viewed from the negative side of the Z axis, the first rib 61b is provided on the positive side of the X axis with respect to the second rib 62b.

[0062] As shown in Fig. 3, the third rib 63 protrudes from the wall portion 65. More specifically, the third rib 63 protrudes from the wall portion 65 in the negative direction of the Z axis. The third rib 63 protrudes from the end of the wall portion 65 on the positive side of the X axis. The third rib 63 has a plate-like shape. The thickness direction of the third rib 63 is along the X axis direction.

[0063] The first attachment portion 66 is, for example, a screw. The first attachment portion 66 is attached to the fixed portion F1. More specifically, the first attachment portion 66 is passed through the third through-hole 643 and the fourth through-hole 521 (see FIG. 3 ) of the fixed portion F1, and rotatably attaches the arm main body 64 to the holder 5 of the fixed portion F1.

[0064] The second mounting portion 67 is provided at the end of the arm main body 64 on the negative side of the X axis. The second mounting portion 67 is a portion to which the support portion 10 that supports the first current collector 2A and the second current collector 2B is attached. The second mounting portion 67 has a mounting hole. The mounting hole penetrates the second mounting portion 67 in the Y axis direction. The insertion portion 102 of the support portion 10 is inserted into the mounting hole of the second mounting portion 67, thereby mounting the support portion 10 to the second mounting portion 67.

[0065] The guide portion 68 protrudes from the arm main body 64. More specifically, the guide portion 68 protrudes in the negative direction of the Y axis from the second surface 64b of the arm main body 64. The guide portion 68 is provided on the positive side of the X axis relative to the first mounting portion 66.

[0066] The spring arrangement portion 69 protrudes from the arm main body 64. More specifically, the spring arrangement portion 69 protrudes in the negative direction of the Y axis from the second surface 64b of the arm main body 64. The spring arrangement portion 69 is provided on the negative side of the X axis relative to the first attachment portion 66.

[0067] The arm 6 configured in this manner is rotatable around the first mounting portion 66 .

[0068] (2.1.6) Fixing Part The arm 6 is attached to the fixing part F1. The fixing part F1 holds the third elastic member 93. As shown in FIG. 1 , the fixing part F1 has a holder 5 and a base 4 to which the holder 5 is attached.

[0069] As shown in FIGS. 3 and 4 , the holder 5 has a support portion 51 , a connecting portion 52 , a retaining portion 53 , a spring base 54 , and a spring arrangement portion 55 .

[0070] The support portion 51 has a columnar shape. The axial direction of the support portion 51 is along the Y-axis direction. A connecting portion 52 protrudes from a tip portion 511 of the support portion 51 that faces in the positive direction of the Y-axis. The connecting portion 52 is the portion to which the arm 6 is attached. The width of the connecting portion 52 in the Z-axis direction is smaller than the width of the support portion 51 in the Z-axis direction. The connecting portion 52 has a fourth through hole 521. The fourth through hole 521 passes through the connecting portion 52 in the Z-axis direction. The support portion 51 has a recess on the surface on the negative side of the Y-axis.

[0071] The first attachment portion 66 is attached to the holder 5. More specifically, the first attachment portion 66 is passed through the third through-hole 643 of the arm main body 64 and the fourth through-hole 521 of the holder 5. In this way, the first attachment portion 66 rotatably attaches the arm main body 64 to the holder 5. In addition, the arm main body 64 faces the tip end 511 of the support portion 51. The arm 6 can rotate about the first attachment portion 66 to a position where the arm main body 64 contacts the tip end 511.

[0072] The retaining portion 53 protrudes from the side surface of the support portion 51. More specifically, the retaining portion 53 protrudes from the support portion 51 in the positive direction of the X-axis.

[0073] The spring rest 54 protrudes from the side surface of the support portion 51. More specifically, the spring rest 54 protrudes from the support portion 51 in the negative direction of the X-axis. The spring rest 54 has a recess 541 on the surface on the positive side of the Y-axis. The recess 541 houses the third elastic member 93.

[0074] The spring arrangement portion 55 protrudes from the spring base 54. More specifically, the spring arrangement portion 55 protrudes in the positive direction of the Y axis from the bottom surface of the recess 541 of the spring base 54. The spring arrangement portion 55 has a truncated cone shape.

[0075] As shown in FIG. 4, the base 4 has a first hook portion 41, a second hook portion 42, a body 43, a cylindrical portion 44, and a retaining portion 45 (see FIG. 2).

[0076] The body 43 includes a bottom portion 431 and a side portion 432 .

[0077] The bottom portion 431 has a plate-like shape. The thickness direction of the bottom portion 431 is along the Y-axis direction. The bottom portion 431 has a recess (not shown). The recess is provided on the surface of the bottom portion 431 on the negative side of the Y-axis.

[0078] The side portion 432 protrudes from the bottom portion 431. More specifically, the side portion 432 protrudes in the positive direction of the Y axis from the positive side of the X axis of the bottom portion 431. The side portion 432 has a first guide portion 46 at the tip facing the positive direction of the Y axis. The first guide portion 46 is a V-shaped groove.

[0079] The first hook portion 41 protrudes in the negative direction of the X axis from the tip of the bottom portion 431 of the body 43 on the negative side of the X axis. The first hook portion 41 is hooked onto the opening edge of a through-hole 711 of the base 7 when the pedestal 4 is attached to the base 7 described below.

[0080] The second hook portion 42 protrudes in the positive direction of the X-axis. When viewed from the positive side of the X-axis, the second hook portion 42 has an inverted U-shape. The second hook portion 42 is inserted into the through-hole 721 of the base 7 when the pedestal 4 is attached to the base 7.

[0081] The cylindrical portion 44 protrudes from the bottom 431 of the body 43. More specifically, the cylindrical portion 44 protrudes from the bottom 431 in the positive direction of the Y axis. The cylindrical portion 44 is provided on the negative side of the X axis with respect to the side 432 of the body 43.

[0082] The retaining portion 45 protrudes from the side portion 432. More specifically, the retaining portion 45 protrudes from the side portion 432 in the negative direction of the X-axis.

[0083] As shown in Fig. 2, the holder 5 is attached to the base 4. That is, the holder 5 moves in the negative direction of the Y axis and the cylindrical portion 44 of the base 4 is inserted into the recess of the support portion 51 of the holder 5, thereby attaching the holder 5 to the base 4. At this time, the retaining portion 53 of the holder 5 is disposed on the negative side of the Y axis relative to the retaining portion 45 of the base 4, and faces the retaining portion 45, thereby preventing the holder 5 from coming off the base 4. More specifically, with the cylindrical portion 44 of the base 4 inserted into the recess of the holder 5, the holder 5 rotates around the cylindrical portion 44, thereby disposing the retaining portion 53 on the negative side of the Y axis relative to the retaining portion 45.

[0084] (2.1.7) Base The base 7 is made of, for example, a metal material. More specifically, the base 7 is formed by, for example, punching and bending a metal plate.

[0085] 2 and 4, the base 7 includes a bottom plate 71, a first side plate 72, and a second side plate 73. The base 7 has a U-shape when viewed from the negative side of the Z axis.

[0086] The bottom plate 71 has a bottom plate main body 710, a plurality of (three in this embodiment) through holes 711, a plurality of (three in this embodiment) protrusions 712, and a plurality of (three in this embodiment) through holes 713. In this embodiment, the plurality of through holes 711, 713 correspond one-to-one to the plurality of current collectors 1. In addition, in this embodiment, the plurality of protrusions 712 correspond one-to-one to the plurality of current collectors 1.

[0087] The bottom plate body 710 is formed in a plate shape. The thickness direction of the bottom plate body 710 is along the Y-axis direction.

[0088] Each of the three through holes 711 has a rectangular shape when viewed from the positive side of the Y axis. The three through holes 711 are aligned at equal intervals along the Z axis direction. The three through holes 711 correspond one-to-one to the three bases 4. More specifically, the three through holes 711 are provided in areas facing the three first hook portions 41. The first hook portion 41 of the corresponding base 4 is hooked onto the opening edge of each through hole 711.

[0089] The three protrusions 712 correspond one-to-one to the three through holes 713. Each protrusion 712 is provided in a position that covers a portion of the corresponding through hole 713. Each protrusion 712 protrudes from the bottom plate main body 710. More specifically, each protrusion 712 protrudes in the positive direction of the Y axis from the surface of the bottom plate main body 710 on the positive side of the Y axis.

[0090] The three protrusions 712 correspond one-to-one to the three bases 4. Each protrusion 712 is inserted into a corresponding recess of the base 4. In the X-axis direction, the protrusions 712 and the inner surfaces of the recesses come into contact with each other. This restricts movement of the base 4 in the negative direction of the X-axis.

[0091] Each of the three through holes 713 includes a bolt hole through which a fastening member 110 (bolt) that connects the base 7 and the mobile device is passed.

[0092] The first side plate 72 has a side plate main body 720 and three through holes 721 .

[0093] The side plate main body 720 has a plate-like shape. The side plate main body 720 protrudes from the bottom plate main body 710 of the bottom plate 71 in the thickness direction of the bottom plate main body 710 (positive direction of the Y axis). The thickness direction of the side plate main body 720 is along the X axis direction.

[0094] Each of the three through holes 721 has a rectangular shape when viewed from the positive side of the X axis. The three through holes 721 are aligned at equal intervals along the Z axis direction. The three through holes 721 correspond one-to-one to the three bases 4. More specifically, the three through holes 721 are provided in areas facing the three second hook portions 42. The second hook portion 42 of the corresponding base 4 is inserted into each through hole 721.

[0095] The second side plate 73 has a side plate main body 730 .

[0096] The side plate main body 730 has a plate-like shape. The side plate main body 730 protrudes from the bottom plate main body 710 of the bottom plate 71 in the thickness direction of the bottom plate main body 710 (positive direction of the Y axis). The thickness direction of the side plate main body 730 is along the X axis direction.

[0097] The connection between the base 7 and the fixed portion F1 is realized only by the hooking of the base 7 and the fixed portion F1 (the first hook portion 41 and the second hook portion 42). Therefore, connection and disconnection are easier than when the base 7 and the fixed portion F1 are connected using a fastening member such as a bolt.

[0098] (2.1.8) First Elastic Member The first elastic member 91 includes, for example, a first coil spring 911. The first coil spring 911 is a compression coil spring. The first coil spring 911 elastically deforms in a contact / separation direction D1 (see FIG. 2 ). The contact / separation direction D1 is a direction in which the first current collector 2A contacts or separates with respect to the trolley wire T1, and in this embodiment, is the Y-axis direction (front-back direction).

[0099] The first coil spring 911 is attached to the first holding portion 23A with the pillar portion 232 of the first holding portion 23A passing through the inside of the first coil spring 911. This allows the first holding portion 23A to move in the approaching and separating direction D1 in response to the elastic deformation of the first coil spring 911. In other words, the first holding portion 23A has the pillar portion 232 passing through the inside of the first coil spring 911, and is able to move in the approaching and separating direction D1 in response to the elastic deformation of the first coil spring 911.

[0100] More specifically, the first elastic member 91 is disposed between the first current collector 2A and the arm 6 in the approaching / separating direction D1. The first elastic member 91 applies an elastic force to the first current collector 2A in a direction in which the first current collector 2A approaches the trolley wire T1. This makes it possible to increase the contact pressure of the first current collector 2A with the trolley wire T1.

[0101] (2.1.9) Second Elastic Member The second elastic member 92 includes, for example, a second coil spring 921. The second coil spring 921 is a compression coil spring. The second coil spring 921 elastically deforms in a contact / separation direction D1 (see FIG. 2 ). The contact / separation direction D1 is a direction in which the second current collector 2B contacts or separates with respect to the trolley wire T1, and in this embodiment, is the Y-axis direction (front-back direction).

[0102] The second coil spring 921 is attached to the second holding portion 23B with the pillar portion 232 of the second holding portion 23B passing through the interior of the second coil spring 921. This allows the second holding portion 23B to move in the approaching and separating direction D1 in response to the elastic deformation of the second coil spring 921. In other words, the second holding portion 23B has the pillar portion 232 passing through the interior of the second coil spring 921, and is able to move in the approaching and separating direction D1 in response to the elastic deformation of the second coil spring 921.

[0103] More specifically, the second elastic member 92 is disposed between the second current collector 2B and the arm 6 in the approaching / separating direction D1. The second elastic member 92 applies an elastic force to the second current collector 2B in a direction in which the second current collector 2B approaches the trolley wire T1. This makes it possible to increase the contact pressure of the second current collector 2B with the trolley wire T1.

[0104] Here, it is preferable that the spring constant of the first elastic member 91 is equal to the spring constant of the second elastic member 92. This makes it possible to use the same parts as the first elastic member 91 and the second elastic member 92, and as a result, it becomes possible to reduce the number of types of parts that make up the current collector 1.

[0105] (2.1.10) Third Elastic Member The third elastic member 93 includes, for example, a third coil spring 931. The third coil spring 931 is a compression coil spring. A first end of the third coil spring 931 faces the spring rest 54 of the holder 5. A spring mounting portion 55 is inserted into the first end of the third coil spring 931. A second end of the third coil spring 931 faces the second surface 64b of the arm main body 64. A spring mounting portion 69 is inserted into the second end of the third coil spring 931. This holds the third coil spring 931 in place.

[0106] The third elastic member 93 supports the arm 6. That is, the third elastic member 93 applies an elastic force (spring force) to the arm main body 64 in the positive direction of the Y axis.

[0107] The third elastic member 93 is sandwiched between a region of the second surface 64b between the first mounting portion 66 and the second mounting portion 67 (a region where the spring arrangement portion 69 is provided) and the spring rest 54 of the holder 5 of the fixed portion F1. When the third elastic member 93 presses the arm main body 64 in the positive direction of the Y axis, the arm 6 rotates about the first mounting portion 66 so that the second mounting portion 67 of the arm 6 moves in the positive direction of the Y axis. As a result, the first current collector 2A and the second current collector 2B receive a force in the positive direction of the Y axis, thereby ensuring contact pressure between the first current collector 2A and the second current collector 2B and the trolley wire T1 (see FIG. 2 ). That is, the third elastic member 93 is disposed on the opposite side of the arm 6 from the first current collector 2A and the second current collector 2B, and applies an elastic force to the first current collector 2A and the second current collector 2B in a direction that moves the first current collector 2A and the second current collector 2B toward the trolley wire T1.

[0108] Here, it is preferable that the spring constant of the third elastic member 93 is larger than the spring constant of the first elastic member 91 and the spring constant of the second elastic member 92. This makes it possible to roughly adjust the contact pressure of the first current collector 2A and the second current collector 2B with the trolley wire T1 by the third elastic member 93 and finely adjust it by the first elastic member 91 and the second elastic member 92.

[0109] (2.1.11) Supporting Section As shown in FIG. 3 , the supporting section 10 has an arm section 101 and an inserting section 102 .

[0110] The longitudinal direction of the arm portion 101 is along the X-axis direction. The arm portion 101 has a rectangular parallelepiped shape. The arm portion 101 has two through holes 1011. The two through holes 1011 are provided at both ends of the arm portion 101 in the X-axis direction. Each of the two through holes 1011 penetrates the arm portion 101 in the Y-axis direction. The first current collector 2A is attached to the arm portion 101 by inserting the pillar portion 232 of the first holding portion 23A into one of the two through holes 1011 (on the negative side of the X-axis). The second current collector 2B is attached to the arm portion 101 by inserting the pillar portion 232 of the second holding portion 23B into the other of the two through holes 1011 (on the positive side of the X-axis).

[0111] The insertion portion 102 is a portion that is inserted into an attachment hole provided in the second attachment portion 67 of the arm 6. The insertion portion 102 rotatably supports the arm portion 101 by means of a through-hole provided in the insertion portion 102 and a shaft portion 11 that passes through a through-hole provided in the arm portion 101. The shaft portion 11 is, for example, a screw.

[0112] According to this configuration, when attaching two current collectors (first current collector 2A and second current collector 2B) to the arm portion 101 of the support portion 10, it is possible to attach the two current collectors simultaneously, which has the advantage of making it easier to attach the two current collectors to the arm portion 101.

[0113] (2.2) Trolley Wire As shown in FIG. 2 , the trolley wire T1 includes a plurality of contact conductors T11 and T12 (two in the illustrated example). Each of the plurality of contact conductors T11 and T12 is formed, for example, from a metal material. The longitudinal direction of each of the contact conductors T11 and T12 is along the X-axis direction. Each of the contact conductors T11 and T12 is rod-shaped and extends along the X-axis direction. In this embodiment, the trolley wire T1 is formed by connecting the plurality of contact conductors T11 and T12 along the X-axis direction.

[0114] (3) Operation Next, the operation of the current collector 1 according to the embodiment will be described with reference to Fig. 2. In the following, it is assumed that the current collector 1 moves from the left side (contact conductor T12 side) to the right side (contact conductor T11 side) with respect to the trolley wire T1.

[0115] In the current collector 1 according to the embodiment, the first current collector 2A and the second current collector 2B are in contact with the trolley wire T1 by the elastic force of the third elastic member 93. That is, in the current collector 1 according to the embodiment, the contact pressure between the first current collector 2A and the second current collector 2B is ensured by the elastic force of the third elastic member 93.

[0116] As described above, the trolley wire T1 according to the embodiment is formed by connecting a plurality of contact conductors T11, T12 along the X-axis direction. In this case, as shown in Fig. 2, when connecting the plurality of contact conductors T11, T12, a step S1 may occur between adjacent contact conductors T11, T12.

[0117] Here, if only the third elastic member 93 is provided for the first current collector 2A and the second current collector 2B, and if a step S1 occurs between the adjacent contact conductors T11 and T12, for example, a situation may occur in which the first current collector 2A is in contact with the contact conductor T11 but the second current collector 2B is not in contact with the contact conductor T12. In other words, the second current collector 2B may become separated from the trolley wire T1.

[0118] In contrast, in the current collector 1 according to the embodiment, a first elastic member 91 is provided for the first current collector 2A, and a second elastic member 92 is provided for the second current collector 2B. Therefore, as shown in Fig. 2 , even in a situation where a step S1 is generated between adjacent contact conductors T11 and T12 and the second current collector 2B is likely to come off the trolley wire T1, the elastic force of the second elastic member 92 can bring the second current collector 2B into contact with the contact conductor T12. That is, the current collector 1 according to the embodiment has the advantage that the first current collector 2A and the second current collector 2B are less likely to come off the trolley wire T1.

[0119] (4) Effects The current collector 1 according to the embodiment includes a first elastic member 91 that applies an elastic force to the first current collector 2A in a direction in which the first current collector 2A approaches the trolley wire T1, and a second elastic member 92 that applies an elastic force to the second current collector 2B in a direction in which the second current collector 2B approaches the trolley wire T1. This makes it possible to individually adjust the position of the first current collector 2A and the position of the second current collector 2B relative to the trolley wire T1, which has the advantage that the first current collector 2A and the second current collector 2B are less likely to come off the trolley wire T1 even when a step S1 is generated between the multiple contact conductors T11 and T12.

[0120] In the current collector 1 according to the embodiment, the spring constant of the third elastic member 93 is greater than the spring constant of the first elastic member 91 and the spring constant of the second elastic member 92. This allows the contact pressure of the first current collector 2A and the second current collector 2B against the trolley wire T1 to be roughly adjusted by the third elastic member 93 and finely adjusted by the first elastic member 91 and the second elastic member 92.

[0121] In the current collector 1 according to the embodiment, the spring constant of the first elastic member 91 is equal to the spring constant of the second elastic member 92. This makes it possible to use the same component as the first elastic member 91 and the second elastic member 92, thereby reducing the number of components that make up the current collector 1.

[0122] In the current collector 1 according to the embodiment, the first elastic member 91 includes a first coil spring 911, and the second elastic member 92 includes a second coil spring 921. This allows the first current collector 2A and the second current collector 2B to come into contact with the trolley wire T1 by the elastic forces of the first coil spring 911 and the second coil spring 921.

[0123] The current collector 1 according to the embodiment includes a first cable 8A that supplies power to the first current collector 2A and a second cable 8B that supplies power to the second current collector 2B. The first cable 8A and the second cable 8B are different cables. This makes it possible to reduce the constraint of the contact pressure of the first current collector 2A by the first cable 8A and the constraint of the contact pressure of the second current collector 2B by the second cable 8B.

[0124] In the current collector 1 according to the embodiment, at least one of the first cable 8A and the second cable 8B is held by the arm 6. This makes it possible to reduce the influence of twisting of the first cable 8A and the second cable 8B on the first current collector 2A and the second current collector 2B.

[0125] In the current collector 1 according to the embodiment, the first cable 8A is drawn out from the second end 202 of the first current collector 2A, and the second cable 8B is drawn out from the fourth end 204 of the second current collector 2B. This has the advantage of facilitating the routing of the first cable 8A and the second cable 8B.

[0126] The trolley system 100 of the embodiment is equipped with the above-mentioned current collector 1, and therefore has the advantage that the first current collector 2A and the second current collector 2B are less likely to come off the trolley wire T1 even if a step S1 occurs between multiple contact conductors T11, T12.

[0127] (5) Modifications The above-described embodiment is merely one of various embodiments of the present disclosure. The above-described embodiment can be modified in various ways depending on the design, etc., as long as the object of the present disclosure can be achieved. Modifications of the above-described embodiment are listed below. The modifications described below can be applied in appropriate combinations.

[0128] (5.1) Modification 1 A current collector 1 according to Modification 1 will now be described with reference to Fig. 5. Regarding the current collector 1 according to Modification 1, the same components as those of the current collector 1 according to the above-described embodiment will be denoted by the same reference numerals, and the description thereof will be omitted.

[0129] In the current collector 1 according to the first modification, the second cable 8B is drawn out from the third end 203 of the second current collector 2B. That is, in the current collector 1 according to the first modification, the outer shell 31 of the second connector portion 3B protrudes from the cover 22 of the second current collector 2B in the negative direction of the X-axis. More specifically, the outer shell 31 of the second connector portion 3B protrudes from the cover 22 of the second current collector 2B toward the first current collector 2A.

[0130] Furthermore, in the current collector 1 according to the first modification, a through hole 1012 is provided in the arm portion 101 of the support portion 10. The through hole 1012 is adjacent to the through hole 1011 of the two through holes 1011 that is provided on the negative side of the X axis. The cable main body 81B of the second cable 8B is passed through the through hole 1012. That is, the cable main body 81B of the second cable 8B connected to the second current collector 2B is passed through the through hole 1012 provided in the arm portion 101 of the support portion 10 and also through the first through hole 641 provided in the arm main body 64 of the arm 6, as shown in FIG.

[0131] In the current collector 1 of variant example 1, a first elastic member 91 is provided for the first current collector 2A and a second elastic member 92 is provided for the second current collector 2B, which has the advantage that the first current collector 2A and the second current collector 2B are less likely to come off the trolley wire T1 even if a step S1 (see Figure 2) occurs between adjacent contact conductors T11 and T12 (see Figure 2).

[0132] (5.2) Other Modifications Other modifications are listed below.

[0133] In the above-described embodiment, two current collectors (first current collector 2A and second current collector 2B) are provided for one current collector 1, but three or more current collectors may be provided.

[0134] In the above embodiment, the spring constant of the first elastic member 91 and the spring constant of the second elastic member 92 are equal, but the spring constant of the first elastic member 91 and the spring constant of the second elastic member 92 may be different.

[0135] In the above-described embodiment, the first elastic member 91, the second elastic member 92, and the third elastic member 93 are each a coil spring (first coil spring 911, second coil spring 921, third coil spring 931). However, at least one of the first elastic member 91, the second elastic member 92, and the third elastic member 93 may be an elastic body made of, for example, a rubber material. Furthermore, at least one of the first elastic member 91, the second elastic member 92, and the third elastic member 93 may be a combination of a coil spring and an elastic body made of a rubber material. Furthermore, at least one of the first elastic member 91, the second elastic member 92, and the third elastic member 93 may be a leaf spring made of a plastic material.

[0136] In the above-described embodiment, each of the first coil spring 911, the second coil spring 921, and the third coil spring 931 is a compression spring, but may be a tension spring. In this case, the first coil spring 911 applies a force to the first current collector 2A in a direction that displaces the first current collector 2A toward the positive side of the Y axis, and the second coil spring 921 applies a force to the second current collector 2B in a direction that displaces the second current collector 2B toward the positive side of the Y axis. Furthermore, the third coil spring 931 applies a force to the first current collector 2A and the second current collector 2B in a direction that displaces the first current collector 2A and the second current collector 2B toward the positive side of the Y axis.

[0137] In the above-described embodiment, the fixing portion F1 is composed of the holder 5 and the base 4, but the fixing portion F1 may be composed of a single member.

[0138] In the above-described embodiment, the first cable 8A that supplies power to the first current collector 2A and the second cable 8B that supplies power to the second current collector 2B are provided separately. However, the first current collector 2A and the second current collector 2B may be connected by a third cable, and the power obtained by the second current collector 2B may be transmitted to the first current collector 2A via the third cable. In this case, the power obtained by the first current collector 2A and the second current collector 2B is supplied to the mobile device via the first cable 8A. However, in this case, the length of the third cable needs to be long enough to allow the first current collector 2A and the second current collector 2B to move independently relative to the trolley wire T1.

[0139] (Aspects) The present specification discloses the following aspects.

[0140] A current collector (1) according to a first aspect is a current collector (1) that transmits power from a trolley wire (T1) to a mobile device. The current collector (1) includes a first current collector (2A), a second current collector (2B), an arm (6), a first elastic member (91), a second elastic member (92), and a third elastic member (93). The first current collector (2A) and the second current collector (2B) contact the trolley wire (T1). The arm (6) supports the first current collector (2A) and the second current collector (2B). The first elastic member (91) is disposed between the first current collector (2A) and the arm (6) and applies an elastic force to the first current collector (2A) in a direction that moves the first current collector (2A) toward the trolley wire (T1). The second elastic member (92) is disposed between the second current collector (2B) and the arm (6) and applies an elastic force to the second current collector (2B) in a direction that moves the second current collector (2B) closer to the trolley wire (T1). The third elastic member (93) is disposed on the opposite side of the arm (6) from the first current collector (2A) and the second current collector (2B) and applies an elastic force to the first current collector (2A) and the second current collector (2B) in a direction that moves the first current collector (2A) and the second current collector (2B) closer to the trolley wire (T1).

[0141] According to this aspect, the first elastic member (91) applies an elastic force to the first current collector (2A) in a direction toward the trolley wire (T1), and the second elastic member (92) applies an elastic force to the second current collector (2B) in a direction toward the trolley wire (T1), so that the positions of the first current collector (2A) and the second current collector (2B) relative to the trolley wire (T1) can be adjusted individually. This has the advantage that the first current collector (2A) and the second current collector (2B) are less likely to come off the trolley wire (T1) even when a step (S1) is formed between the multiple contact conductors (T11, T12) in the trolley wire (T1).

[0142] In the current collector (1) according to the second aspect, in the first aspect, the spring constant of the third elastic member (93) is greater than the spring constant of the first elastic member (91) and the spring constant of the second elastic member (92).

[0143] According to this aspect, the contact pressure of the first current collector (2A) and the second current collector (2B) against the trolley wire (T1) can be roughly adjusted by the third elastic member (93) and finely adjusted by the first elastic member (91) and the second elastic member (92).

[0144] In the current collector (1) according to the third aspect, in the first or second aspect, the spring constant of the first elastic member (91) is equal to the spring constant of the second elastic member (92).

[0145] According to this aspect, it is possible to reduce the number of types of parts that constitute the current collector (1).

[0146] The current collector (1) according to a fourth aspect is the current collector (1) of any one of the first to third aspects, further comprising a first holding portion (23A) and a second holding portion (23B). The first holding portion (23A) holds the first current collector (2A). The second holding portion (23B) holds the second current collector (2B). The first elastic member (91) includes a first coil spring (911) that elastically deforms in a contact / separation direction (D1), which is a direction in which the first current collector (2A) approaches or separates from the trolley wire (T1). The second elastic member (92) includes a second coil spring (921) that elastically deforms in the contact / separation direction (D1). The first holding portion (23A) has a first pillar portion (232) that is passed through the inside of the first coil spring (911) and is movable in the contact / separation direction (D1) in response to the elastic deformation of the first coil spring (911). The second holding portion (23B) has a second pillar portion (232) that is passed through the inside of the second coil spring (921), and is movable in the approaching and separating direction (D1) in response to the elastic deformation of the second coil spring (921).

[0147] According to this aspect, the elastic forces of the first coil spring (911) and the second coil spring (921) make it possible to bring the first current collector (2A) and the second current collector (2B) into contact with the trolley wire (T1).

[0148] The current collector (1) according to a fifth aspect is the current collector (1) of any one of the first to fourth aspects, further comprising a first power feeder (81A) and a second power feeder (81B). The first power feeder (81A) feeds power to the first current collector (2A). The second power feeder (81B), different from the first power feeder (81A), feeds power to the second current collector (2B).

[0149] According to this aspect, by separately providing the first power supply line (81A) and the second power supply line (81B), it is possible to reduce the constraint of the contact pressure of each current collector (2A, 2B) by the power supply lines (81A, 81B).

[0150] In the current collector (1) according to the sixth aspect, in the fifth aspect, at least one of the first power feeder (81A) and the second power feeder (81B) is held by the arm (6).

[0151] According to this aspect, it is possible to reduce the influence of twisting of the power supply lines (81A, 81B) on the current collectors (2A, 2B).

[0152] In the current collector (1) according to the seventh aspect, in the fifth or sixth aspect, the first current collector (2A) has a first end (201) facing the second current collector (2B) and a second end (202) opposite the first end (201). The second current collector (2B) has a third end (203) facing the first current collector (2A) and a fourth end (204) opposite the third end (203). The first power supply line (81A) is drawn out from the second end (202). The second power supply line (81B) is drawn out from the fourth end (204).

[0153] This embodiment has the advantage that the power supply lines (81A, 81B) can be easily routed.

[0154] A trolley system (100) according to an eighth aspect includes the current collector (1) according to any one of the first to seventh aspects and a trolley wire (T1).

[0155] According to this aspect, since the current collector (1) is provided, there is an advantage that the first current collector (2A) and the second current collector (2B) are less likely to separate from the trolley wire (T1).

[0156] The configurations according to the second to seventh aspects are not essential for the current collector (1) and can be omitted as appropriate.

[0157] REFERENCE SIGNS LIST 1 Current collector 2A First current collector 2B Second current collector 6 Arm 23A First holding part 23B Second holding part 81A Cable main body (first power supply line) 81B Cable main body (second power supply line) 91 First elastic member 92 Second elastic member 93 Third elastic member 100 Trolley system 201 First end 202 Second end 203 Third end 204 Fourth end 232 Pillar part (first pillar part, second pillar part) 911 First coil spring 921 Second coil spring D1 Contact / separation direction T1 Trolley wire

Claims

1. A current collector that transmits power from a contact wire to a mobile device, comprising: first and second current collectors that contact the contact wire; an arm that supports the first and second current collectors; a first elastic member that is arranged between the first current collector and the arm and applies an elastic force to the first current collector in a direction that causes the first current collector to approach the contact wire; a second elastic member that is arranged between the second current collector and the arm and applies an elastic force to the second current collector in a direction that causes the second current collector to approach the contact wire; and a third elastic member that is arranged on the opposite side of the arm from the first and second current collectors and applies an elastic force to the first and second current collectors in a direction that causes the first and second current collectors to approach the contact wire.

2. The current collector according to claim 1, wherein the spring constant of the third elastic member is greater than the spring constant of the first elastic member and the spring constant of the second elastic member.

3. The current collector according to claim 1 or 2, wherein the spring constant of the first elastic member is equal to the spring constant of the second elastic member.

4. A current collector according to any one of claims 1 to 3, further comprising a first holding portion that holds the first current collector, and a second holding portion that holds the second current collector, wherein the first elastic member includes a first coil spring that elastically deforms in a direction in which the first current collector approaches or moves away from the trolley wire, and the second elastic member includes a second coil spring that elastically deforms in the direction in which the first current collector approaches or moves away from the trolley wire, the first holding portion has a first pillar portion that passes through the inside of the first coil spring and is movable in the direction in which the first coil spring moves toward or away from the trolley wire, and the second holding portion has a second pillar portion that passes through the inside of the second coil spring and is movable in the direction in which the second coil spring moves toward or away from the trolley wire.

5. The current collector according to any one of claims 1 to 4, further comprising: a first power supply line that supplies power to the first current collector; and a second power supply line that is different from the first power supply line and that supplies power to the second current collector.

6. The current collector according to claim 5, wherein at least one of the first power feeder and the second power feeder is held by the arm.

7. A current collecting device according to claim 5 or 6, wherein the first current collector has a first end facing the second current collector and a second end opposite the first end, the second current collector has a third end facing the first current collector and a fourth end opposite the third end, the first power supply line is drawn out from the second end, and the second power supply line is drawn out from the fourth end.

8. A trolley system comprising: the current collector according to any one of claims 1 to 7; and the trolley wire.

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