KR20180088284A - Terminal unit, terminal device, and power supply system having the same - Google Patents

Abstract

Provided are a terminal unit, a terminal device, and a power supply system having the same, which can shorten the length of electric wire for being electrically connected to an external circuit and a power feeding path. The terminal unit (20) is provided with a first terminal part (21), a second terminal part, and a unit body (23). The first terminal part (21) mechanically maintains a second end of a core wire (11) and is electrically connected to the core wire (11). The second terminal part is electrically connected to the first terminal part (21) and connects an electric wire (7). The unit body (23) maintains the first terminal part (21) and the second terminal part. The unit body (23) has a guide recess (231) and a tension support unit (232). The guide recess (231) is formed across a gap between both sides in an extended direction on a front surface (233) of the unit body (23). The tension support unit (232) receives tension applied to the unit body (23) from the power feeding path (1).

Description

TECHNICAL FIELD [0001] The present invention relates to a terminal unit, a terminal apparatus, and a power supply system having the terminal unit,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention generally relates to a terminal unit, a terminal apparatus, and a power supply system having the terminal unit, and more particularly to a terminal unit, a terminal apparatus, and a power supply system .

Document 1 (JP 2008-301577 A) discloses a power collecting device for transmitting electric power from a power feeder to a mobile device such as a crane. The current collector includes a current collector and a fixing member. The collecting arm has the collector and the arm. One end of the arm holds the current collector, and the end of the arm opposite to the current collector is held in the holding member. This current collector is provided in the mobile device by fixing the fixing member to the mobile device.

When the current collector is moved together with the mobile device, the collector moves while touching the power feeding path. As a result, the current is collected by the current collector from the power feeder, and power of the power feeder is supplied to the mobile device through the current collector.

[0004] As a power supply line (insulated trolley wire) as described in Document 1, there is known a power supply line used in a state in which tension is applied from both sides in the extending direction. In the case where a power take-off unit of a power feeding apparatus occurs in a power feeding path of another facility such as a traverser or a turntable from a power feeding path of a tension formula, one end of the power feeding path of the tension formula is held by the tightening device, And the other end is held in the terminal unit. In this state, tension is applied to the power feeding path by the pulling device pulling the power feeding path. In this configuration, since the power feeding path is electrically connected to an external circuit (external power supply, etc.) by a tightening device, if the tightening device is disposed at a relatively far position from the external circuit, There is a possibility that the wire length becomes comparatively long.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a terminal unit, a terminal device, and a power supply system including the terminal unit, which can reduce the length of a wire for electrically connecting an external circuit and a power feeding path in consideration of the above- .

The terminal unit according to one aspect of the present invention has at least one core wire having both end portions in the extending direction as a first end portion and a second end portion and a tensile force along the extending direction from the first end portion, And the power supply path that acts on the power supply. The terminal unit includes a first terminal portion, a second terminal portion, and a unit body. The first terminal portion mechanically holds the second end portion and is electrically connected to the core wire. The second terminal portion is electrically connected to the first terminal portion and is a terminal portion for connecting the electric wire. The unit body holds the first terminal portion and the second terminal portion. The unit main body has a guide groove and a tension receiving portion. The guide groove is formed between both ends in the extending direction on the front surface of the unit body, and houses the core wire. The tension receiving portion receives a tension acting on the unit body from the power feed path via the first terminal portion by regulating the movement of the unit main body in a direction approaching the first end portion.

A terminal device according to an aspect of the present invention includes the terminal unit and a fixing member for fixing the unit main body to an installation object. The fixing member has a contact surface that is in contact with the tension receiving portion from the first end side in the extending direction. The tension receiving portion is configured to regulate the movement of the unit main body in a direction approaching the first end portion by contacting the contact surface.

A power supply system according to an aspect of the present invention includes the terminal device and the power feed path.

1 is a perspective view of a power supply system according to Embodiment 1 of the present invention.
2 is an exploded perspective view of the above-described power supply system.
3 is a perspective view of the terminal device of the above-described power supply system.
Fig. 4 is an exploded perspective view of the above-described terminal device viewed from the left front upper side.
5 is an exploded perspective view of the above-described terminal device as seen from the lower right rear side.
6 is a rear view of the terminal unit of the above-described terminal unit with its cover removed.
7 (a) is a front view of the above-described terminal device, and Fig. 7 (b) is a rear view of the aforementioned terminal device.
8 is a bottom view of the above-described terminal device.
9 is a bottom view of the terminal device according to the second embodiment of the present invention.

(Embodiment 1)

(1) Overview

1 and 2, the power supply system 10 according to the present embodiment includes a power supply path 1, a terminal device 2, and a tightening device 3. As shown in Fig. 1 and 2, the power supply system 10 further includes a duct rail 4 as an installation object. However, the power supply system 10 may not include the installation object (duct rail 4) as a component. The power supply system 10 may include at least the feeder path 1 and the terminal device 2 as constituent elements and may not include the tightening device 3 as a constituent element. In other words, the power feeding system 10 may be constituted by the power feeding path 1 and the terminal device 2.

The power supply system 10 is a so-called insulation trolley used in, for example, an automatic warehouse or a factory or the like, for feeding power to a mobile device moving in the facility. As an example of a mobile device, there is an electric bogie that transports an article in a facility and carries out an article to and from a shelf. The mobile device operates by being supplied with electric power from the power supply system (10). Specifically, the power feeding path 1 has at least one core wire 11a, 11b electrically connected to an external power source. The mobile device is provided with a current collector 5 (see Fig. 1) having current collectors. The current collector 5 moves along the extension direction of the core wires 11a and 11b in a state in which the current collectors are in contact with the core wires 11a and 11b. Thereby, the mobile device can move (travel) along the extending direction of the core wires 11a and 11b while being supplied with electric power from the power feeding path 1 to the current collector 5. In Fig. 1, the schematic shape of the current collector 5 is indicated by an imaginary line (chain double-dashed line).

In the present embodiment, a direct current power supply system 10 having a direct-current motor and supplying power to a mobile apparatus that operates by receiving direct-current power will be described as an example. This power supply system 10 employs a pair of (two) core wires 11a and 11b of positive and negative poles as core wires of the power feed path 1 to supply DC power to the power collector 5 have. It is assumed here that a so-called light load device is used as a mobile device with a relatively low power consumption, and the allowable current of the power feed path 1 is assumed to be relatively small. When the pair of core wires 11a and 11b are not particularly distinguished, each of the core wires 11a and 11b is simply referred to as " core wire 11 ".

The power feeding furnace 1 is installed in an installation object (here, the duct rail 4). In this embodiment, as an example, it is assumed that power is supplied to a mobile device moving in a horizontal direction, and a feed path 1 is provided in a duct rail 4 provided along a horizontal direction. Hereinafter, the direction perpendicular to (orthogonal to) the horizontal plane in the state where the power feed path 1 is installed on the duct rail 4 is referred to as "vertical direction" and the lower direction (vertical direction) is referred to as "lower" . The direction in which the power feeding path 1 and the current collecting device 5 are opposed to each other is referred to as the "forward and backward direction" as a direction orthogonal to the up-and-down direction and the current collecting device 5 side is referred to as "forward" . The longitudinal direction of the duct rail 4, that is, the moving direction of the mobile device is referred to as " lateral direction ", and the power feed path 1 is described as being "right" . The arrows indicating " vertical direction ", " forward and backward direction ", and " horizontal direction " in the drawing are merely for the sake of explanation, However, this direction does not limit the use direction (installation direction) of the power feed furnace 1. For example, " front " defined here may be downward (vertical direction) in a state where the actual feeder path 1 is installed.

Incidentally, in the power feeding furnace 1, there are two types: a tension type and a connection type (non-tension type). The tension feeder 1 is used in a state in which tensile force acts on the core wire 11 from both sides in the extending direction of the core wire 11 (left and right direction). Concretely, in the tension feeding rail 1, both ends of the core wire 11 in the extending direction (left and right direction) are connected to the duct rail 4 through the terminal device 2 and the tightening device 3 ). In this case, one end (first end 111) of the core wire 11 is installed on the duct rail 4 through the tightening device 3 and the other end (second end 112) Is installed in the duct rail (4) through the terminal device (2). The tension on the core wire (11) is generated by the tightening device (3). However, the tensioning device 3 is not essential as a structure for applying a tension to the core wire 11. [ For example, when the power feeding path 1 is relatively short (for example, several tens of centimeters), a pair of terminal devices 2 are provided on both sides in the extending direction of the power feeding path 1, It is also possible to lay the road 1 between the pair of terminal devices 2.

If the feed rail 1 is of the tension type, the feeder 1 is cut from the sufficiently long feed rail 1 by a required length to use the feed rail 1. Therefore, in the tension feeding path 1, the feeding path 1 of a sufficient length (for example, 50 m) is wound in a loop shape with a radius of several tens of centimeters (hereinafter also referred to as a " ) To the construction site (facility). On the other hand, the connection-type power feeding path 1 is used in a state in which tension is not applied to the core wire 11 but a plurality of feeding paths 1 are connected in the extending direction of the core wire 11. In the case of the connection-type power supply path 1, the required number of the power supply paths 1 of a predetermined length (for example, 3 m) are connected and used at the time of installation of the power supply path 1 to the facility. Therefore, in the connection-type power feeding path 1, a plurality of the power feeding paths 1 are brought into a construction site (facility) in a state of overlapping (hereinafter also referred to as a "lamination state"). The power feeding path 1 is held by a holding member fixed to the duct rail 4 at appropriate intervals in the extending direction (right and left direction), regardless of the tensioning type and the coupling type. Thus, even when the power feeding path 1 is pushed back by the current collecting device 5, warping of the power feeding path 1 is suppressed.

When the tension formula and the connection formula are compared, it can be seen that the tension feeder 1 can realize a relatively long feeder without any seam, and it is not necessary to connect a plurality of feeder paths 1 at the time of construction, There is an advantage that it can be omitted. In addition, with respect to the installation interval of the holding member holding the power feeding path 1, the tension feeding path 1 can be made wider than the connecting type feeding path 1. [ In other words, since the power feeding furnace 1 of the tension type is provided in a state in which the warp of the power feeding path 1 is suppressed by the tension, even if the installation interval of the holding member is wide, It is possible to realize the difficulty of warping. For example, in a case where the spacing of the holding members in the coupling type is 50 cm, the spacing of the holding members in the tension formula can be extended to about 2 m. Therefore, the power feeding furnace 1 of the tension type can reduce the labor of construction for providing the holding member. On the other hand, in the connection-type power feeding path 1, there is no need to exert tension on the core wire 11, so that the tightening device 3 becomes unnecessary.

In the present embodiment, as shown in Figs. 1 and 2, the case where the power feeding path 1 is a tensioning type will be described as an example. Further, in this embodiment, a power feeding path (1) in which the power collecting device (5) is changed from a power feeding path (1) of a tension type to a power feeding path of another facility such as a traverser or a turntable The case is assumed. Here, the " traverser " is, for example, a facility for moving the mobile device in the up-down direction or the back-and-forth direction in parallel. Here, " transferring " refers to, for example, when the mobile device moving in the facility X moves to the facility Y adjacent to the facility X, the power collector 5 of the mobile device leaves the feed line of the facility X, To the railroad. In general, a pair of feed paths that can be exchanged are provided side by side on the same straight line at intervals of about 1 mm to several cm.

In this case, in the tension feeding circuit 1, one end portion (first end portion 111) of the core wire 11 in the extending direction is held by the tightening device 3, and the other end portion End 112) is held in the terminal unit 20 of the terminal device 2. [ The terminal unit 20 has a holding function of holding the power feeding path 1 in a state in which a tensile force is applied from the tightening device 3 and a holding function of holding the power feeding path 1 between the power feeding path of the power feeding path 1 and the power feeding path 5) of the vehicle. Thereby, in the power feeding path 1, at the second end portion 112, which is the end of the terminal unit 20, of the both end portions in the extending direction of the core wire 11, It is possible to exchange the current collecting device 5 between them. On the other hand, among the both end portions in the extending direction of the core wire 11, the first end 111, which is the end of the tightening device 3, does not carry out the transfer of the current collector 5.

In the power feeding system 10 according to the present embodiment, the terminal unit 20 further has a connecting function for electrically connecting the power feeding path 1 to an external circuit (here, an external power source). Therefore, in the power feeding system 10 according to the present embodiment, the power feeding path 1 can be electrically connected to the external power source by the terminal device 2 including the terminal unit 20, Feeding to the power feeding furnace 1 becomes possible with the terminal device 2. [ Therefore, even if the fastening device 3 is disposed at a relatively far position from the distribution board, the power supply path 1 can be connected to the distribution board with the terminal device 2, so that the external power supply (distribution board) It is possible to shorten the length of the electric wire for electrical connection. The maintenance function, guide function, and connection function of the terminal unit 20 will be described in detail in the section of "(2.4) terminal device".

(2) Details

Hereinafter, the details of each section of the power supply system 10 according to the present embodiment will be described.

(2.1) Installation object

In this embodiment, as shown in Figs. 1 and 2, the installation object is formed of a long duct rail 4 extending in the left-right direction. The duct rail 4 is made of metal, for example. The duct rails 4 are installed, for example, between a pair of pillars provided at regular intervals in the left and right direction.

The duct rail 4 includes a rear wall 41 disposed along a plane orthogonal to the front and rear direction, an upper wall 42 protruding forward from the upper edge of the rear wall 41, And a front wall 44 protruding downward from the front edge of the upper wall 42. The upper wall 42 is formed with a lower wall 43, Here, the rear wall 41, the upper wall 42, the lower wall 43, and the front wall 44 are integrally formed. In other words, the rear wall 41, the upper wall 42, the lower wall 43 and the front wall 44 are made of a single sheet of metal. The duct rail 4 has an opening 45 between the lower end edge of the front wall 44 and the front end edge of the lower wall 43. The opening 45 is formed to extend over the entire length of the duct rail 4 in the left-right direction. Holes for fixing the terminal device 2 and the tightening device 3 are formed in the rear wall 41 of the duct rail 4.

With respect to such a duct rail 4, the power feeding path 1 is provided at the front of the rear wall 41 by at least the terminal device 2 and the tightening device 3. 1, a space surrounded by the rear wall 41, the upper wall 42, the lower wall 43, and the front wall 44 is provided in the feeding rail 1 in the state that the feeding rail 1 is installed in the duct rail 4. [ 1, and the power feeding path 1 is exposed forward through the opening portion 45. As shown in Fig. The power feeding path 1 is held in the rear wall 41 of the duct rail 4 at appropriate intervals in the extending direction (right and left direction) between the terminal device 2 and the tightening device 3 The holding member may be fixed. By using the duct rails 4, even if there is no structure such as a wall or a ceiling, the holding members can be provided at desired intervals, and the power feed path 1 can be installed. The duct rail 4 also has a function of protecting the power feeding path 1 by surrounding the power feeding path 1. [

(2.2) Feeding line

1 to 3, at least one core wire 11a, 11b and a covering member 12 are provided in the power feeding furnace 1.

In the present embodiment, since the power feeding path 1 supplies DC power as described above, the power feeding path 1 has a pair of (two) core wires 11a and 11b of an anode and a cathode .

The core wire (11) is an elongated member having conductivity and extending in the extending direction. In the present embodiment, the " extending direction " of the core wire 11 is referred to as " left and right direction ". Here, as an example, the core wire 11 is a flat wire made of a metal such as copper or a copper alloy and having a rectangular cross-sectional shape perpendicular to the extending direction. In the present embodiment, of the directions orthogonal to the extending direction, the short direction of the end face of the core wire 11 is " front and back direction ", and the long direction of the end face of the core wire 11 is " In other words, the front-rear direction is the thickness direction of the core wire 11, and the up-down direction is the width direction of the core wire 11.

The cover member 12 is an elongated member having electrical insulation and covering the core wire 11. In other words, the cover member 12 is a long member extending in the extending direction (left-right direction) like the core wire 11. In this embodiment, as an example, the cover member 12 is made of a synthetic resin such as hard vinyl chloride. On the front surface of the covering member 12, grooves opened frontward are formed along the left and right direction, and the core wires 11 are housed in the grooves. Here, the grooves are formed over the entire length of the covering member 12 in the left-right direction. As a result, the core wire 11 is exposed forward through the opening of the groove. In other words, the cover member 12 covers the core wire 11 so that the core wire 11 is exposed through the opening of the groove.

Since the power feed path 1 includes the pair of core wires 11a and 11b, the pair of grooves 11a and 11b are formed in the cover member 12 so as to correspond to the pair of core wires 11a and 11b Respectively. The pair of grooves are formed in parallel with each other at a predetermined interval in the vertical direction. That is, a pair of core wires 11a and 11b housed in a pair of grooves are arranged side by side in the vertical direction. This makes it possible to bring the current collector of the current collector 5 into contact with the core wire 11 in the groove by bringing the current collector 5 into contact with the power feeder 1 from the front, (Core wire 11) to the current collector 5 becomes possible.

The core wire 11 has a first end 111 (see FIG. 2) and a second end 112 (see FIG. 2) at both ends in the extending direction. The first end portion 111 protrudes from one side of the covering member 12 in the extending direction (left side in this case) and the second end portion 112 protrudes from the covering member 12 to the other side . That is, one end of each end portion of the pair of core wires 11a and 11b protruding from the cover member 12 to the left becomes the first end portion 111, and the cover member 12 extends from the cover member 12 to the right And the other end portion protruding becomes the second end portion 112.

(2.3) Fastening device

As shown in Figs. 1 and 2, the fastening device 3 includes a main body 31 and a tension generating portion 32. [ The tightening device 3 is a device that applies tension in the extending direction to the core wire 11 of the power feed path 1. [ In other words, the tightening device 3 applies a force (tension) in a pulling direction to both sides of the core wire 11 in the extending direction (left-right direction) of the core wire 11.

The housing constituting the outer periphery of the main body 31 is made of, for example, synthetic resin and has electrical insulation. The main body 31 is housed in the duct rail 4 in a state in which the rear surface of the main body 31 is in contact with the front surface of the rear wall 41 of the duct rail 4. The housing of the main body 31 functions as an insulator for securing electrical insulation between the core wire 11 of the power feeding path 1 and the duct rail 4 and the tension generating portion 32.

The main body 31 has a holding function of holding the power feeding path 1 like the terminal unit 20 of the terminal device 2 described later. In the present embodiment, the main body 31 further has a connecting function for electrically connecting the power feeding path 1 to an external circuit (external power source in this case), like the terminal unit 20. Specifically, the main body 31 houses a holding terminal portion (corresponding to the first terminal portion 21) and a wire terminal portion (corresponding to the second terminal portion 22) in the housing. The holding terminal portion mechanically holds the first end portion 111 which is one end portion in the extending direction of the core wire 11 and is also electrically connected to the core wire 11. [ The wire terminal portion is a terminal for connecting the electric wire 7 (see Fig. 4), and is electrically connected to the holding terminal portion. The core wire 11 of the power feeding path 1 can be electrically connected to the external circuit through the electric wire 7 in the main body 31. [ It is to be noted that the present embodiment describes a case where electrical connection between the core wire 11 and an external circuit is performed by the terminal unit 20 of the terminal device 2 instead of the main body 31 of the tightening device 3 do. The electric wire 7 for electrically connecting the core wire 11 to the external circuit is not connected to the main body 31 of the tightening device 3 but is connected to the terminal unit 20. [

The tension generating portion 32 has a main shaft 321 made of a headless screw (stud bolt), a nut 322, and a compression coil spring 323.

One end (right end) of the main shaft 321 in the longitudinal direction (left and right direction) is fixed to the main body 31. The main shaft 321 is supported by a receiving jig 6 (see Figs. 1 and 2) made of a general-purpose jig such as an L angle. The support jig 6 is fixed to the rear wall 41 of the duct rail 4 and the main shaft 321 is supported by the support jig 6 in a state in which the support jig 6 passes through in the left and right direction.

The nut 322 is attached to an end portion (left end portion) opposite to the main body 31 in the longitudinal direction of the main shaft 321. The compression coil spring 323 is combined with the main shaft 321 so that the main shaft 321 passes through the inside of the compression coil spring 323. [ The compression coil spring 323 is disposed between the receiving jig 6 and the nut 322 in the left-right direction.

With this configuration, by moving the nut 322 in the left-right direction by operating the nut 322, the size of the tension acting on the core wire 11 from the tension generating portion 32 through the main body 31 is set to Can be adjusted. That is, for example, when the nut 322 moves in the direction of approaching the receiving jig 6, the compressed coil spring 323 is compressed between the nut 322 and the receiving jig 6, and the compressed coil spring 323 The nut 322 is subjected to a force in the direction away from the receiving jig 6. At this time, the nut 322 receives a force in the left direction from the compression coil spring 323, and the main shaft 321 is pulled in the left direction together with the nut 322. Therefore, the tension acting on the core wire 11 of the power feeding path 1 (the force pulling the core wire 11 in the left direction) from the tension generating portion 32 becomes large. On the contrary, when the nut 322 moves in the direction away from the receiving jig 6, the elastic force of the compression coil spring 323 becomes small and the force in the left direction acting on the nut 322 from the compression coil spring 323 becomes Lt; / RTI > Therefore, the tension acting on the core wire 11 of the power feeding path 1 from the tension generating portion 32 (the force pulling the core wire 11 in the left direction) is reduced.

(2.4) Terminal device

Next, the details of the terminal device 2 will be described with reference to Figs. 3 to 8. Fig.

As shown in Fig. 3, the terminal device 2 includes a terminal unit 20 and a fixing member 8. As shown in Fig. The terminal device 2 is provided on the side opposite to the tightening device 3 (see Fig. 2) in the extending direction with respect to the power feeding path 1 and is a device for holding the power feeding path 1. [ In other words, the terminal device 2, together with the tightening device 3, acts on the core wire 11 with a force (tension) in a pulling direction from both sides in the extending direction (left-right direction) of the core wire 11 .

The terminal unit 20 holds the power feeding path 1. [ The power feeding furnace 1 is a tensioning type power feeding furnace in which a tensile force along the extending direction from the first end portion 111 (see Fig. 2) acts on the core wire 11 as described above. The terminal unit 20 holds the second end portion 112 (see Fig. 2) opposite to the first end portion 111 held by the tightening device 3, at both ends in the extending direction of the core wire 11 .

As shown in Figs. 4 and 5, the terminal unit 20 (see Fig. 3) includes at least one first terminal portion 21a, 21b, at least one second terminal portion 22a, 22b, (23). The terminal unit (20) further includes a cover (24).

The terminal unit 20 includes a pair of first terminal portions 21a and 21b and a pair of first terminal portions 21a and 21b so as to correspond to the pair of core wires 11a and 11b in the present embodiment, And a pair of second terminal portions 22a and 22b. Each of the first terminal portions 21a and 21b is simply referred to as a " first terminal portion 21 " in a case where the pair of first terminal portions 21a and 21b are not particularly distinguished. Each of the second terminal portions 22a and 22b is simply referred to as a " second terminal portion 22 " in a case where the pair of second terminal portions 22a and 22b are not particularly distinguished.

The first terminal portion 21 mechanically holds the second end portion 112 of the core wire 11 and is also electrically connected to the core wire 11. In the present embodiment, the first terminal portion 21 is a screw type terminal, and the second screw portion 112 of the core wire 11 is inserted into the prismatic metal plate, And is connected to the core wire 11. Here, two fastening screws 211 are used for one first terminal portion 21, and the pair of first terminal portions 21a and 21b are formed by tightening the pair of core wires 11a and 11b, respectively, . Therefore, a holding function of holding the power feeding path 1 in a state in which tension is applied from the tightening device 3 is implemented. Each of the tightening screws 211 is a screw having an overload protection function (torque limiter), and is configured such that the head portion is folded when tightened with a torque of a prescribed torque or more.

The second terminal portion 22 is a terminal for connecting the electric wire 7 and is electrically connected to the first terminal portion 21. [ Here, the electric wire 7 is a two-wire (two-wire) electric wire corresponding to the pair of second terminal portions 22a and 22b. In the present embodiment, the second terminal portion 22 is a screw-type terminal, and is mechanically and electrically connected to the electric wire 7 by tightening the terminal screw 221. The electric wire 7 connected to the pair of second terminal portions 22 is connected to an external circuit (external power source in this case). The pair of core wires 11a and 11b in the power feeding path 1 are connected to the pair of first terminal portions 21a and 21b, the pair of second terminal portions 22a and 22b, 7) to an external circuit (external power source). Therefore, a connection function for electrically connecting the power feeding path 1 to an external circuit (external power source) is implemented.

The second terminal portion 22 is held in the unit main body 23 in a direction in which the electric wire 7 connected to the second terminal portion 22 is drawn out toward the first end portion 111 (left side) in the extending direction . 6, the electric wire 7 connected to the second terminal portion 22 is drawn out from the unit main body 23 to the same side (left side) as the power feeding path 1. [ Here, one first terminal portion 21a and one second terminal portion 22a are integrally formed of a single metal plate. Similarly, the first terminal portion 21b on the other side and the second terminal portion 22b on the other side are integrally formed of a single metal plate.

The unit main body 23 and the cover 24 all have electrical insulation properties. Here, the unit main body 23 and the cover 24 are all made of synthetic resin. The cover 24 is provided on the back (rear) side of the unit body 23. The unit main body 23 holds the first terminal portion 21 and the second terminal portion 22. The terminal unit 20 is housed in the duct rail 4 in a state in which the rear surface of the unit body 23 is in contact with the front surface of the rear wall 41 of the duct rail 4. [ The unit main body 23 functions as an insulator for securing electrical insulation between the core wire 11 and the electric wire 7 and between the duct rail 4 and the fixing member 8. [

A housing recess 237 (see Fig. 5) for housing the first terminal portion 21 and the second terminal portion 22 is formed on the rear surface of the unit body 23. The cover 24 is provided to the unit main body 23 so as to cover the housing recess 237. That is, between the unit body 23 and the cover 24, the first concave portion 237 is formed between the first terminal portion 21 and the second concave portion 237 at the back side (rear side) of the unit body 23 in the front- And the second terminal portion 22 are formed.

6, the unit main body 23 further includes a partition wall 238 for dividing the interior space of the accommodating concave portion 237 into two in the vertical direction. The first terminal portion 21a and the second terminal portion 22a are accommodated in the space above the partition wall 238 in the inner space of the housing recess 237. [ The first terminal portion 21b and the second terminal portion 22b are accommodated in the space below the partition wall 238 in the inner space of the housing concave portion 237. [

A through hole 239 for passing the electric wire 7 connected to the second terminal portion 22 is formed on the left side surface of the accommodating concave portion 237 in the unit body 23. The line through hole 239 extends to the housing recess 237 and extends from the housing recess 237 to the left. As a result, the electric wire 7 connected to the second terminal portion 22 is drawn out from the unit main body 23 to the same side (left side) as the power feeding path 1 through the through-hole 239.

4 and 5, the left end of the cover 24 is screwed to the unit body 23 using a pair of assembly screws 251 and a pair of assembly nuts 252. [ The pair of assembly nuts 252 is an insert nut and is embedded in a pair of assembly holes 253 formed in the rear surface of the unit body 23. At the left end of the cover 24, a pair of through holes 241 for passing a pair of assembly screws 251 are formed. In other words, the pair of assembly screws 251 pass through the cover 24 and are tightened to a pair of assembly nuts 252 embedded in the unit body 23. Thus, the cover 24 is attached to the unit body 23.

A pair of protruding walls 242 (see FIG. 4) and a pair of ribs 243 (see FIG. 4), which are vertically opposed to each other, are provided on the surface of the cover 24 facing the unit body 23 Respectively. The pair of projecting walls 242 are disposed at positions where the cover 24 interferes with the head portion of the tightening screw 211 when the cover 24 is installed on the unit main body 23. As a result, in a state in which the head of the tightening screw 211 having the overload protection function (torque limiter) is not folded, in other words, the tightening screw 211 is not tightened with a torque equal to or higher than the specified torque, Is restricted in the unit main body 23. That is, when the head portion of the tightening screw 211 remains, the right end of the cover 24 floats from the back surface of the unit main body 23, and the restricting portion 235, which will be described later, The installation of the terminal unit 20 is prohibited.

Further, the ribs 243 are located between the pair of through holes 241. The rib 243 functions as suppressing the tension of the electric wire 7 connected to the second terminal portion 22 in a state where the cover 24 is provided on the unit main body 23. [ In other words, the ribs 243 sandwich the electric wire 7 between the second terminal portion 22 and the line passage hole 239 between the second terminal portion 22 and the line passage hole 239, (Left-right direction). The cover 24 is screwed to the unit body 23 with a pair of assembly screws 251 through a pair of through holes 241 located on both sides in the up and down direction of the rib 243. Therefore, by tightening the assembly screw 251, the rib 243 can be inserted into the electric wire 7, and the tension of the electric wire 7 can be more firmly suppressed.

3, the unit body 23 of the terminal unit 20 according to the present embodiment has at least one guide groove 231a and 231b and a tension receiving portion 232 .

The guide grooves 231a and 231b are grooves for receiving the core wire 11 of the power feeding path 1 and are formed across both ends of the front face 233 of the unit body 23 in the extending direction. The guide grooves 231a and 231b are formed between both ends of the front surface 233 of the unit body 23 in the direction along the extending direction of the core wire 11. In other words, That is, the guide grooves 231a and 231b are opened forward and formed so as to penetrate the unit main body 23 over the entire length in the extending direction. Since the power feed path 1 includes the pair of core wires 11a and 11b in the unit body 23 as well as the pair of core wires 11a and 11b, (231a, 231b).

The pair of guide grooves 231a and 231b are formed side by side at predetermined intervals in the vertical direction. An opening 230 for disposing a pair of first terminal portions 21a and 21b accommodated in the accommodating concave portion 237 is formed in the bottom surface and a part of the inner surface of the pair of guide grooves 231a and 231b Respectively. In other words, the space in the housing recess 237 is continuous with the space in the guide groove 231 through the opening 230. The first terminal portion 21 accommodated in the housing recess 237 is exposed through the opening 230 from the bottom surface and a part of the inner surface of the guide groove 231.

The core wire 11a is introduced into the guide groove 231a from the left side of the unit body 23 and is connected to the first terminal portion 21a in the guide groove 231a. The core wire 11b is introduced into the guide groove 231b from the left side of the unit body 23 and connected to the first terminal portion 21b in the guide groove 231b. That is, a pair of core wires 11a and 11b housed in the pair of guide grooves 231a and 231b are arranged side by side in the vertical direction. In the case where the pair of guide grooves 231a and 231b are not particularly distinguished, each of the guide grooves 231a and 231b is also simply referred to as " guide groove 231 ".

Thus, the current collector 5 is brought into contact with the unit body 23 in a state in which the second end 112 of the core wire 11 is held, It can be brought into contact with the core wire 11 in the groove 231 and power supply from the power feeding path 1 to the power collecting device 5 becomes possible. The current collector of the current collector 5 is connected to the unit main body 23 through the guide groove 231 so that the current flows through the guide groove 231. [ It is possible to pass in the extending direction. That is, in a state in which power supply from the power feeding path 1 to the power collecting apparatus 5 is continued, the power collecting apparatus 5 can move along the extending direction so as to pass through the terminal unit 20. When passing through the terminal unit 20, the current collecting device 5 is guided by the guide groove 231 so as to be restricted from moving in the up-and-down direction and moving in the extending direction. Therefore, a guide function that enables the transfer of the current collector 5 between the power feed path 1 and the power feed path of other equipment is realized.

Here, the width dimension (vertical dimension) of the guide groove 231 is set to be smaller than the vertical dimension of the first terminal portion 21, except for the portion where the opening 230 is formed in the guide groove 231 have. Therefore, the first terminal portion 21 disposed in the opening 230 can not move in the guide groove 231 along the extending direction. The first terminal portion 21 is held in the unit body 23 in a state in which the first terminal portion 21 is disposed in the opening 230 and even if a leftward force acts on the first terminal portion 21 from the core wire 11, The terminal portion 21 is stopped in the opening 230.

7A, the guide groove 231 has a width enlarged portion 236 at the end (right end) opposite to the first end 111 (right end) in the extending direction I have. The width enlarging section 236 widens the width dimension (the dimension in the vertical direction) of the guide groove 231 as the outer side (right side) of the unit main body 23 becomes larger. Thereby, even when there is a positional deviation in the vertical direction between the power feed path before the changeover and the power feed path after the change in the power collecting device 5, the width enlargement part 236 becomes a guide And it becomes possible to ride.

The tension receiving portion 232 restricts the movement of the unit main body 23 in the direction toward the first end portion 111 so that the force receiving portion 232 can be moved from the power feed path 1 to the unit main body 23). ≪ / RTI > In this embodiment, the tension receiving portion 232 is a vertical surface that faces the first end 111 side (left side) in the extending direction and is orthogonal to the extending direction. In other words, the left side surface of the unit main body 23 constitutes the tension receiving portion 232. The term " orthogonal " as used herein includes not only a state of strictly intersecting 90 degrees but a state of being orthogonal to each other at approximately 90 degrees. The tension receiving portion 232 contacts the contact surface 81 of the fixing member 8 to be described later so as to regulate the movement of the unit main body 23 in the direction (left direction) approaching the first end portion 111 Consists of. That is, the unit main body 23 is configured such that the left side surface of the unit body 23 serving as the tension receiving portion 232 is brought into contact with a part (contact surface 81) of the fixing member 8, To the unit body 23 via the first terminal portion 21, as shown in Fig.

7 (a) and 7 (b), the unit main body 23 has a first end 111 (the left end of the unit body 23) which is the tension receiving portion 232 And a pair of positioning protrusions 234 projecting toward the left side (left side). The pair of positioning projections 234 are provided at both ends of the rear end of the left side surface of the unit main body 23 in the vertical direction. The unit main body 23 is positioned in the longitudinal direction with respect to the fixing member 8 by placing the positioning projection 234 on the positioning concave portion 832 of the fixing member 8 to be described later. However, the positioning projections 234 may be provided only in one pair.

8, the unit main body 23 further has a regulating portion 235 for regulating the forward movement of the unit main body 23. As shown in Fig. The regulating portion 235 is a through hole formed in the right side surface of the accommodating concave portion 237 in the unit body 23 in this embodiment. The restricting piece 84 of the fixing member 8 to be described later is inserted into the restricting portion 235 from the side of the accommodating concave portion 237 (left side). In other words, the restricting piece 84 is restrained from moving forward of the unit body 23 by being caught by the restricting portion 235, and the unit body 23 from the rear wall 41 of the duct rail 4, Injuries are regulated.

The fixing member 8 is a member for fixing the unit main body 23 of the terminal unit 20 to the duct rail 4 (mounting object). In this embodiment, the fixing member 8 is a fixture (fixing jig) made of metal such as iron.

As shown in Fig. 8, the fixing member 8 has a contact surface 81 which is in contact with the tension receiving portion 232 from the first end 111 side (left side) in the extending direction. The tension receiving portion 232 is configured to restrict movement of the unit main body 23 in a direction toward the first end portion 111 by contacting the contact surface 81. [ Specifically, as shown in Figs. 4 and 5, the fixing member 8 includes a contact surface 81, a fixing piece 82, a pair of side wall portions 83, and a restriction piece 84 I have. The fixing piece 82, the pair of side wall portions 83, and the restricting piece 84 are integrally formed of a single sheet of metal plate.

The fixing piece 82 is in the shape of a long strip in the extending direction (left-right direction). The fixing piece 82 is provided with a pair of mounting holes 821 arranged in the extending direction. The fixing pieces 82 are provided on the rear wall 41 of the duct rail 4 by a pair of mounting bolts 91 passing through the pair of mounting holes 821. [ A mounting mechanism 92 is mounted on the distal end of the mounting bolt 91 passing through the rear wall 41. The installation mechanism 92 has an installation nut 92a, a spring washer 92b, and a flat washer 92c. The fixing member 8 is installed on the duct rail 4 so as to sandwich a part of the rear wall 41 of the duct rail 4 between the fixing member 8 and the mounting mechanism 92, With no jolt.

Here, in this embodiment, the mounting bolt 91 is a welding bolt, and is fixed to the fixing piece 82 by welding. Therefore, the height of the head portion of the mounting bolt 91 (the amount of protrusion from the front surface of the fixing piece 82) can be suppressed lower than a general bolt such as a hexagonal bolt. Thus, interference between the mounting bolt 91 and the electric wire 7 connected to the second terminal portion 22 is avoided.

The pair of side wall portions 83 protrude forward from both ends of the fixing piece 82 in the up and down direction. Here, the pair of side wall portions 83 are provided only at the first end portion 111 (left side) of the center of the fixing piece 82 in the longitudinal direction (extending direction). Here, the contact surface 81 is a cross section (right side) opposite to the first end 111 in the extending direction of the pair of side wall portions 83 (right side). The contact surface 81 contacts the tension receiving portion 232 of the terminal unit 20 from the first end 111 side (left side) in the extending direction. 8, even if the leftward tensile force X1 acts on the unit body 23 from the power feed path 1 via the first terminal portion 21, the movement of the unit body 23 toward the left side Is restricted by the fixing member (8), and the tension X1 can be received by the tension receiving portion (232).

At the rear end of the contact surface 81 in the pair of side wall portions 83, a positioning concave portion 832 is formed. The positioning projection 234 of the unit body 23 is engaged with the positioning recessed portion 832 so that the positioning of the terminal unit 20 with respect to the fixing member 8 is performed in the longitudinal direction.

Here, the tension receiving portion 232 is provided in a rearward direction of the front end edge of the core wire 11 in the front-rear direction. More specifically, as shown in Fig. 8, the front surface of the pair of side wall portions 83 is positioned on the fixing member 8 so as to be positioned rearward by a distance D1 from the front edge of the core wire 11 in the front- (The amount of protrusion from the front surface of the fixing piece 82) of the pair of side wall portions 83 is set. That is, the entire left surface (vertical surface) of the unit main body 23 does not constitute the tension receiving portion 232 but a portion of the left surface (vertical surface) of the unit main body 23, which is in contact with the contact surface 81, Thereby constituting a receiving portion 232. Fig. The height of the pair of side wall portions 83 having the contact surface 81 is suppressed to be low so that the range of the left side surface (vertical surface) of the unit main body 23 that functions as the tension receiving portion 232 is Can be narrowed down. As a result, the tension receiving portion 232 is provided in the rearward direction of the front end edge of the core wire 11 in the front-rear direction.

The height of the pair of side wall portions 83 (the amount of protrusion from the front surface of the fixing piece 82) is lower toward the first end portion 111 (left side) in the extending direction. Therefore, the front end faces of the pair of side wall portions 83 constitute inclined faces 831 inclined to the left. As described above, in the present embodiment, the dimension in the longitudinal direction of the pair of side wall portions 83 becomes smaller as the distance from the contact surface 81 (the right side surface of the pair of side wall portions 83) increases.

The restricting piece 84 protrudes from the end (right end) opposite to the first end 111 in the extending direction of the fixing piece 82 (right side). The restricting piece 84 protrudes toward the opposite side (right side) from the first end 111. The restricting piece 84 regulates the forward movement of the unit body 23 by being inserted into the restricting portion 235 of the unit body 23 as shown in Fig. In other words, as the restricting piece 84 is caught by the restricting portion 235, the lifting of the unit main body 23 from the securing piece 82 is regulated.

Here, the tension receiving portion 232 and the restricting portion 235 are arranged such that the tension receiving portion 232 is located on the first end 111 side (left side) in the extending direction. In other words, the restricting portion 235 is located on the opposite side (right side) to the first end 111 with respect to the tension receiving portion 232 in the extending direction. 8, when the tension X1 in the left direction from the power feed path 1 through the first terminal portion 21 acts on the unit main body 23, the unit main body 23, The rotation of the unit body 23 is effectively restricted to the restricting portion 235 against the moment X2 acting on the restricting portion 235. [

(3) Modifications

The power supply system 10 according to the first embodiment is only one of various embodiments of the present invention. The power supply system 10 according to the first embodiment can be modified in various ways according to the design or the like as long as the object of the present invention can be achieved. Modifications of the first embodiment are listed below. Modifications described below are applicable in appropriate combination.

The mobile device that operates by receiving power from the power supply system 10 is not limited to the electric bogie, but may be, for example, a crane and a vehicle for picking up people. The facility to which the power supply system is applied is not limited to an automatic warehouse or a factory, but may be, for example, a play facility or a store. Further, the power supply system 10 is not limited to the indoor unit, but may be an outdoor unit used outside the building.

Further, the power supply system 10 may be used not only for supplying the DC power but also for supplying AC power such as a single-phase two-wire type or a three-phase three-wire type. Further, the power supply system 10 may be used, for example, in communication for transmitting a signal such as a control signal to a load (a mobile device in this case). In other words, the power feeding furnace 1 is not limited to a two-wire type having a pair of (two) core wires 11, but may have one core wire or three or more core wires 11.

The fixing member 8 is not limited to a metal, but may be made of a synthetic resin, for example.

In the first embodiment, the case where the power feeding path 1 extends in a straight line has been described. However, the power feeding path 1 may extend along a curve. For example, when the moving path of the mobile device receiving the power supply from the power feeding system 10 is a curved path, the power feeding path 1 is curved along this moving path. Even in such a case, by extending the feed path 1 in the extending direction of the feed path 1, the extending direction of the feed path 1 is defined as the extending direction of the straight line. In other words, in the curved feeding rail 1, the tangential direction at each portion of the subdivided feeding rail 1 becomes the extending direction.

The cross section orthogonal to the extending direction of the core wire 11 is not limited to the rectangular shape. For example, a groove having a V-shaped cross section or a U-shaped cross section may be formed on the entire surface of the core wire 11.

In the first embodiment, the restricting piece 84 of the fixing member 8 is inserted into the restricting part 235 of the unit main body 23, The relationship between the irregularities may be reversed. In other words, a recess may be formed in the restricting piece 84 of the fixing member 8 and a protrusion inserted into the recess may be formed in the restricting portion 235 of the unit main body 23.

The unit main body 23 of the terminal unit 20 may be integrated with the fixing member 8 as well. In this case, a portion corresponding to the fixing piece 82 of the fixing member 8 is formed in the unit main body 23 in place of the tension receiving portion 232 having the vertical surface as in the first embodiment, Thereby forming a tension receiving portion that receives a tension acting on the tension member.

The fixing member 8 may be integrated with the duct rail 4 so that a part of the duct rail 4 functions as the fixing member 8. In this case, the terminal unit 20 is directly installed on the installation object (duct rail 4) without using the fixing member 8. [ In this case, the terminal device 2 is constituted only by the terminal unit 20, and does not include the fixing member 8 in its constituent elements.

The second terminal portion 22 may be electrically connected to the first terminal portion 21. For example, the second terminal portion 22 and the first terminal portion 21 may be formed of respective metal plates, braided wire or the like.

The tension receiving portion 232 and the restricting portion 235 may be arranged such that the tension receiving portion 232 is opposite to the first end 111 (right side) in the extending direction. In other words, the regulating portion 235 may be located on the first end 111 side (left side) with respect to the tension receiving portion 232 in the extending direction.

The cover 24 is not limited to the structure in which the cover 24 is screwed to the unit body 23. For example, the cover 24 may be provided in the unit body 23 by a snap-fit structure .

Further, the tightening device 3 is not limited to the configuration described in the first embodiment, and can be appropriately changed. For example, the tension generating portion 32 is not limited to the structure in which the tension is applied to the core wire 11 by the elastic force of the compression coil spring 323, but tension may be applied to the core wire 11 by other methods. For example, the tightening device 3 may have a plurality of tension generating portions 32. [

The object to be installed is not limited to the duct rail 4, but may be a structure such as a wall or a ceiling. In other words, the power feeding furnace 1 may be installed directly on a structure such as a wall or a ceiling without passing through the duct rail 4.

(Embodiment 2)

The terminal device 2A according to the present embodiment is configured such that the configuration of the tension receiving portion 232A of the terminal unit 20 and the contact surface 81A of the fixing member 8A is different from that of the embodiment 1 is different from the terminal apparatus 2 related to the first embodiment. Hereinafter, the same reference numerals are given to the same components as those of the first embodiment, and a description thereof will be omitted.

In the present embodiment, the tension receiving portion 232A is an inclined surface that is directed to the first end portion (left side) in the extending direction (left and right direction) and is inclined forward with respect to a plane orthogonal to the extending direction . In other words, a portion of the unit main body 23A, which is inclined toward the left front side, constitutes the tension receiving portion 232A.

According to this configuration, the unit main body 23A is provided on the fixing member 8A in such a form that the tension receiving portion 232A enters behind the right end portion of the side wall portion 83 of the fixing member 8A. Therefore, the lifting of the unit main body 23A from the fixing piece 82 becomes less likely to occur.

The configuration of the second embodiment can be appropriately combined with various configurations (including modifications) described in the first embodiment.

(theorem)

As described above, the terminal units 20 and 20A related to the first aspect have at least one core wire 11 having both end portions in the extending direction as the first end portion 111 and the second end portion 112 And maintains the power feeding path (1). In the power feeding furnace 1, a tensile force along the extending direction acts on the core wire 11 from the first end portion 111 side. The terminal units 20 and 20A each have a first terminal portion 21, a second terminal portion 22 and unit bodies 23 and 23A. The first terminal portion 21 mechanically holds the second end portion 112 and is also electrically connected to the core wire 11. The second terminal portion 22 is electrically connected to the first terminal portion 21 and is a terminal portion for connecting the electric wire 7. The unit bodies 23 and 23A hold the first terminal portion 21 and the second terminal portion 22, respectively. The unit bodies 23 and 23A have guide grooves 231 and tension receiving portions 232 and 232A. The guide groove 231 is formed between both ends of the front surface 233 of the unit main body 23 and 23A in the extending direction and houses the core wire 11 therein. The tension receiving portions 232 and 232A restrict the movement of the unit bodies 23 and 23A in the direction of approaching the first end portion 111 so that the first terminal portion 21 And receives a tensile force acting on the unit main body 23 (23A).

According to this configuration, the power collecting device 5 is brought into contact with the unit body 23, 23A holding the second end portion 112 of the core wire 11 from the front, (Power supply device 11) to the power collector device 5. The guide groove 231 is formed between both ends of the unit body 23 in the extending direction of the unit main body 23 and 23A so that the power supply from the power feeding path 1 to the power collecting device 5 is continued, 5 can pass through the terminal units 20, 20A along the extending direction. Since the terminal units 20 and 20A have the second terminal portion 22, a connection function of electrically connecting the feeder path 1 to an external circuit is realized. Therefore, when the tightening device 3 is disposed at a relatively far position from the external circuit, the power feeding path 1 can be electrically connected to the external circuit by the terminal units 20 and 20A. As a result, the length of the electric wire 7 for electrically connecting the external circuit to the power feeding path 1 can be shortened.

In the terminal unit 20 according to the second aspect, in the first aspect, the tension receiving portion 232 is a vertical surface oriented toward the first end portion 111 in the extending direction and orthogonal to the extending direction . According to this configuration, the tension acting on the unit main body 23 from the power feeding path 1 can be efficiently received by the tension receiving portion 232.

The terminal unit 20 according to the third aspect is such that the unit main body 23 has the positioning projections 234 projecting from the vertical surface serving as the tension receiving portion 232 toward the first end portion 111 ). With this configuration, positioning of the terminal unit 20 with respect to the fixing member 8 becomes possible.

In the terminal unit 20A according to the fourth aspect, in the first aspect, the tension receiving portion 232A is directed to the first end 111 side in the extending direction, and is extended in a plane orthogonal to the extending direction It is preferable that the inclined surface is inclined forward. According to this configuration, the lifting of the unit main body 23A becomes less likely to occur.

The terminal unit 20 or 20A according to the fifth aspect is any one of the first to fourth embodiments wherein the unit bodies 23 and 23A are arranged to restrict the forward movement of the unit bodies 23 and 23A It is preferable to further include a restricting portion 235 for restricting the opening / closing operation. With this configuration, it is difficult for the unit bodies 23 and 23A to rise.

The terminal units 20 and 20A according to the sixth aspect of the present invention are arranged such that the tension receiving portions 232 and 232A are located rearward beyond the front end edge of the core wire 11 in the forward and backward directions . According to this configuration, the insulation distance between the contact surfaces 81, 81A contacting the tension receiving portions 232, 232A and the core wire 11 and the current collector 5 can be made relatively large.

The terminal units 20 and 20A according to the seventh aspect are characterized in that the tension receiving portions 232 and 232A and the restricting portion 235 are provided with the tension receiving portions 232 and 232A in the extending direction, And the first end 111 is disposed on the first end 111 side. According to this configuration, when the tension from the power feeding path 1 acts on the unit bodies 23 and 23A, the force exerted on the unit bodies 23 and 23A against the moment acting on the unit bodies 23 and 23A The rotation can be efficiently regulated by the regulating portion 235. [

The terminal units 20 and 20A according to the eighth aspect are characterized in that the tension receiving portions 232 and 232A and the restricting portion 235 in the sixth aspect are provided with the tension receiving portions 232 and 232A, And the first end 111 is disposed on the first end 111 side. According to this configuration, when the tension from the power feeding path 1 acts on the unit bodies 23 and 23A, the force exerted on the unit bodies 23 and 23A against the moment acting on the unit bodies 23 and 23A The rotation can be efficiently regulated by the regulating portion 235. [

The terminal units 20 and 20A according to the ninth aspect are configured such that the second terminal portions 22 are held by the unit bodies 23 and 23A in the following manner in any one of the first to eighth aspects . This direction is a direction in which the electric wire 7 connected to the second terminal portion 22 is drawn out toward the first end portion 111 in the extending direction. According to this configuration, even when the clearance between the power feeding path before the replacement and the power feeding path after the replacement is small, the drawing of the electric wire 7 from the unit main body 23, 23A is facilitated.

The terminal device 2 or 2A according to the tenth aspect is characterized in that the terminal units 20 and 20A related to any one of the first to ninth aspects and the unit bodies 23 and 23A are mounted on the mounting object 4) of the fixing member 8, 8A. The fixing members 8 and 8A have contact surfaces 81 and 81A which are in contact with the tension receiving portions 232 and 232A from the first end 111 side in the extending direction. The tension receiving portions 232 and 232A are configured to restrict the movement of the unit bodies 23 and 23A in the direction of approaching the first end portion 111 by contacting the contact surfaces 81 and 81A. According to this configuration, when the tightening device 3 is disposed at a relatively far position from the external circuit, the power feeding path 1 can be electrically connected to the external circuit to the terminal devices 2 and 2A. As a result, the length of the electric wire 7 for electrically connecting the external circuit to the power feeding path 1 can be shortened.

The terminal devices 2 and 2A according to the eleventh aspect of the present invention are the terminal devices 2 and 2A according to the tenth aspect in which the fixing members 8 and 8A have a pair of side wall portions 83 . The pair of side wall portions 83 are located on both sides in the width direction orthogonal to both the extending direction and the front-rear direction with respect to the electric wire 7 connected to the second terminal portion 22. The contact surfaces 81 and 81A are sections opposite to the first end 111 in the extending direction of the pair of side wall portions 83. [ The dimension in the front-rear direction of the pair of side wall portions 83 becomes smaller as the distance from the contact surfaces 81, 81A in the extending direction. With this configuration, interference between the electric wire 7 and the pair of side wall portions 83 is unlikely to occur, and the electric wire 7 can be easily routed.

The feed system 10 according to the twelfth aspect includes the terminal devices 2 and 2A and the feed path 1 according to the tenth or eleventh aspect. According to this configuration, when the tightening device 3 is disposed at a relatively far position from the external circuit, the power feeding path 1 can be electrically connected to the external circuit to the terminal devices 2 and 2A. As a result, the length of the electric wire 7 for electrically connecting the external circuit to the power feeding path 1 can be shortened.

The configurations related to the second to ninth aspects are not essential to the terminal units 20 and 20A and can be appropriately omitted. The configuration related to the eleventh aspect is not essential to the terminal devices 2 and 2A, and can be appropriately omitted.

Claims (13)

A terminal unit having at least one core wire having both end portions in the extending direction as a first end portion and a second end portion and holding a feed path in which tension along the extending direction acts on the core wire from the first end portion,
A first terminal portion mechanically holding the second end portion and electrically connected to the core wire,
A second terminal portion electrically connected to the first terminal portion for connecting the electric wire,
And a unit body for holding the first terminal portion and the second terminal portion,
And,
The unit body includes:
A guide groove formed in a front surface of the unit body and extending between both ends in the extending direction,
And a second tensioned portion that receives a tensile force acting on the unit body from the power feed path via the first terminal portion by regulating the movement of the unit main body in a direction approaching the first end portion,
Having
Terminal unit.
The method according to claim 1,
Wherein the tension receiving portion is a vertical surface that faces the first end in the extending direction and is orthogonal to the extending direction.
3. The method of claim 2,
Wherein the unit body further has a positioning projection projecting from the vertical surface, which is the tension receiving portion, toward the first end portion.
The method according to claim 1,
Wherein the tension receiving portion is an inclined surface that is inclined forward with respect to a plane orthogonal to the extending direction, the first inclined surface facing the first end in the extending direction.
The method according to claim 1,
Wherein the unit body further includes a restricting portion for restricting the forward movement of the unit body.
6. The method of claim 5,
Wherein the tension receiving portion is provided in a rear portion of the front end edge of the core wire in the front-back direction.
6. The method of claim 5,
Wherein the tension receiving portion and the restricting portion are arranged such that the tension receiving portion is on the first end side in the extending direction.
The method according to claim 6,
Wherein the tension receiving portion and the restricting portion are arranged such that the tension receiving portion is on the first end side in the extending direction.
The method according to claim 1,
And the second terminal portion is held in the unit body in a direction in which the electric wire connected to the second terminal portion is drawn out toward the first end portion in the extending direction.
A terminal unit according to any one of claims 1 to 9,
A fixing member for fixing the unit body to an installation object,
And,
The fixing member has a contact surface that is in contact with the tension receiving portion from the first end in the extending direction,
And the tension receiving portion is configured to restrict the movement of the unit main body in a direction approaching the first end portion by being in contact with the contact surface
Terminal device.
11. The method of claim 10,
The fixing member has a pair of side wall portions located on both sides in the width direction orthogonal to both the extending direction and the longitudinal direction with respect to the electric wire connected to the second terminal portion,
Wherein the contact surface is a cross section of the pair of side wall portions opposite to the first end in the extending direction,
The dimension in the front-rear direction of the pair of side wall portions becomes smaller as the distance from the contact surface in the extending direction
Terminal device.
A terminal device according to claim 10,
[0035]
.
A terminal device according to claim 11,
[0035]
.

Images