TW201916520A - Power supply system capable of suppressing an increase in temperature of a cable portion - Google Patents

Abstract

This invention provides a suspension type power supply system capable of suppressing an increase in temperature of a cable portion. A power supply system (100) includes: a suspension type power supply cable device (1) including a cable portion (10), and a reel device (2) mounted to the power supply cable device (1) and holding a wire (3) so as to be drawn out. The cable portion (10) has a deformation portion (103) which is deformed in a first state and a second state. The deformation portion (103) has a ring shape in the first state. In the power supply cable device (1), the distance between both ends is larger in the second state than in the first state of the deformation portion (103). The wire (3) drawn from the reel device (2) is coupled to a part of the deformation portion (103) of the cable portion (10). The reel device (2) holds the deformation portion (103) via the wire (3).

Description

power supply system

The present invention relates generally to a power supply system, and more specifically, to a suspended power supply system.

In the past, it is known that there is a top wall hanging socket (power supply system) including: a support body fixed to the top wall; a rope body hanging from the support body; and a body provided at the front end of the rope body for free lifting (for example, refer to (Japanese Patent Application Publication No. 2007-193995, hereinafter referred to as "Document 1").

The ceiling-mounted hanging socket of Document 1 includes a crimped power cord (cable portion); the socket portion is housed in the body, and the plug-in plug is connected freely. Among the cable portions, portions other than both end portions are formed in a spiral shape. One end portion of the cable portion is housed in the support body, and the other end portion of the cable portion is introduced into the body. The socket portion is connected to an end portion (the other end portion) of the cable portion in the body.

The top wall hanging socket can be pulled up to the vicinity of the top wall when the socket portion is not used, and the body can be appropriately pulled down to any position during use and held by a rope body.

In the ceiling-hanging socket of Document 1, the cable portion has a helical portion. Therefore, for example, compared with a power supply cable having a linear cable portion, the temperature of the cable portion has a temperature when a large current flows. The possibility will rise. [Prior Art Document] [Patent Document] Japanese Patent Publication No. 2007-193995

[Problems to be solved by the invention]

The present invention has been made in view of the above-mentioned circumstances, and an object thereof is to provide a suspended power supply system capable of suppressing a temperature rise of a cable portion. [Method of Solving Problems]

According to one aspect of the present invention, a power supply system includes: a suspended cable supply device having a cable portion; and a reel device installed on the cable supply device and holding the wire in a pull-out manner. The cable portion has a deformed portion that deforms in a first state and a second state. The deformed portion is formed in a ring shape in the first state. In the cable supply device, compared with the first state of the deformed portion, in the second state, an interval between both ends is further separated. The wire drawn from the reel device is coupled to a part of the deformed portion of the cable portion. The reel device holds the deformed portion by the wire. [Effect of Invention]

The power supply system of the present invention has the advantage that the temperature rise of the cable portion can be suppressed.

[Best mode for carrying out the invention]

1 to 8 are schematic diagrams described in the following embodiments and the like. The ratio of the size or thickness of each constituent element in FIGS. 1 to 8 does not necessarily reflect the actual size ratio.

(1) Overview As shown in FIG. 1 to FIG. 5, the power supply system 100 of this embodiment includes a suspended cable supply device 1 and a reel device 2. The cable supply device 1 includes a cable portion 10. The cable portion 10 has one end (first end 101) and the other end (second end 102).

As shown in FIG. 1, for example, the cable device 1 is suspended so that one end (the first end 101) of the cable portion 10 is the upper side and the other end (the second end 102) is the lower side. For example, the wiring duct 80 to which the cable device 1 is fixed on the top wall of the room of the building is installed such that the first end 101 of the cable portion 10 is on the upper side and the second end 102 is on the lower side of the building. 80 suspended for use. The building using the power supply system 100 may be, for example, a non-residential house such as a factory, a school, a shop, a hospital, or an office, or a single-family house or a residential house such as a collective house.

In the following description, in a state where the wiring duct 80 is installed with the cable device 1, the vertical (orthogonal) direction (the vertical direction in FIG. 1) with respect to the horizontal plane is referred to as the “up and down direction”, and the downward (vertical direction) is referred to as "Below". However, these directions are not intended to limit the usage of the power supply system 100.

The cable supply device 1 includes a connection portion 11 at one end (first end 101) on the upper side of the cable portion 10. The connection portion 11 is mounted on the wiring duct 80 and is electrically connected to a power supply channel (conductor) 81 of the wiring duct 80.

In addition, the cable supply device 1 includes a socket portion 12 at one end (the second end 102) of the lower side of the cable portion 10. The socket section 12 can be connected to a plug to be connected to the electrical equipment 301 (see FIG. 4). That is, the cable supply device 1 has a function of an outlet, and supplies power to the electrical equipment 301 connected to the outlet portion 12. Here, the socket part 12 is for 200V AC, and is a double-port socket (two sockets for connecting with the plug) 120 which can be connected to two plugs at the same time. The electrical equipment 301 connected to the socket portion 12 is not particularly limited. The electric equipment 301 may be, for example, a portable electric tool (see FIG. 4), a movable electric equipment such as an electric-assisted food delivery vehicle including a cold storage room and a thermal storage room. Alternatively, the electrical equipment 301 may be an electrical equipment, such as electric tools, household electrical appliances, and laboratory appliances, which are not easily carried in a building.

The cable part 10 of the cable supply device 1 has an electric wire inside, and the connection part 11 and the socket part 12 are electrically connected via the electric wire of the cable part 10. Thereby, power can be supplied to the socket section 12 by a power source (a system power source or the like) connected to the conductor 81 of the wiring duct 80. That is, the cable portion 10 is a power supply path from the connection portion 11 to the socket portion 12.

As shown in FIG. 1, in the cable supply device 1 of this embodiment, the cable portion 10 includes a deformed portion 103. The deformed portion 103 has a first state and a second state having different shapes. The deformed portion 103 deforms in a first state and a second state. As shown by the solid line in FIG. 1, the deformed portion 103 forms a ring (circle) shape in the first state. As shown by the two-dot chain line in FIG. 1, in the second state, the deformed portion 103 has a ring-shaped portion having a smaller diameter than the first state.

In the cable portion 10, the interval between the two ends (between the first end 101 and the second end 102) in the second state of the deformed portion 103 is more separated than in the first state of the deformed portion 103. That is, in the power supply cable device 1, the interval between the two ends of the deformed portion 103 is further separated in the second state of the deformed portion 103 than in the first state of the deformed portion 103. In the state where the cable device 1 is suspended from the wiring duct 80, the position of the socket portion 12 in the second state of the deformed portion 103 is more than the position of the socket portion 12 in the first state of the deformed portion 103. Below (see Figure 1).

The reel device 2 is attached to the cable supply device 1. In the present embodiment, the reel device 2 is provided in the cable portion 10 of the cable device 1, and more specifically, in a portion between the first end 101 and the deformed portion 103 of the cable portion 10. The reel device 2 holds the wire 3 so as to be pulled out. The wire 3 pulled out from the reel device 2 is bonded (fixed) to a part of the cable portion 10, and more specifically, it is bonded (fixed) to a part of the deformed portion 103 of the cable portion 10. In a state where the cable supply device 1 is suspended from the wiring duct 80, the deformed portion 103 receives an upward force from the wire 3. Thereby, the deformed portion 103 is held to the reel device 2 by the wire 3.

When the drawing amount of the wire 3 calculated from the reel device 2 is changed, the part (joining part) of the deformed part 103 of the cable part 10 that joins the wire 3 moves up and down, and the size of the loop formed by the deformed part 103 Variety. Therefore, the position of the second end 102 of the cable portion 10 (the position of the socket portion 12) moves up and down in response to the movement in the up and down direction of the coupling portion.

In this way, in the power supply system 100, when the socket part 12 is used (when the plug is connected to the connection port 120), the user can set the deformed part 103 to the second state, so that the socket part 12 is located (compared to the deformed part). The first state of 103 is even more) below. Thereby, the socket portion 12 can be positioned near the use surface 300 where the electrical equipment 301 is arranged (see FIG. 4).

In addition, the user can set the deformed portion 103 to the first state after using the socket portion 12 (remove the plug from the connection port 120), and place the socket portion 12 in the second state (compared to the deformed portion 103) More) above. Thereby, the socket portion 12 can disappear from the space occupied by the socket portion 12 when in use. Therefore, when not in use, the socket portion 12 is less likely to hinder the movement of a person, and is not likely to be a factor that limits the range of movement of a person (see FIG. 5).

(2) Details The power supply system 100 according to this embodiment will be described in detail below with reference to Figs. 1 to 5.

As described above, the power supply system 100 according to this embodiment includes a cable supply device 1 and a reel device 2. The power supply system 100 is used by being attached to the wiring duct 80, for example.

(2.1) Wiring duct First, the wiring duct 80 will be described with reference to FIG. 2. The wiring duct 80 is, for example, fixed on the ceiling wall of a room in a building along the ceiling wall surface in the longitudinal direction.

The wiring duct 80 includes the above-mentioned conductor (power supply path) 81, and further includes a duct body 82.

The catheter body 82 is formed of a metal such as aluminum into a rectangular tube shape (here, a hexagonal tube shape) with a long opening at both ends, and the surface is coated with an insulating synthetic resin. The catheter body 82 has a groove-shaped connection recess 821 that opens downward. The connection recessed part 821 is formed in a linear shape along the longitudinal direction of the catheter body 82. A pair of lip portions 822 protruding toward the inner side of the connection recessed portion 821 are provided at the lower end portions of both side surfaces of the catheter body 82 in the longitudinal direction. That is, the connection recess 821 of the catheter body 82 becomes a so-called lip groove.

Three conductors (power supply channels) 81 (811 to 813) are arranged inside the catheter body 82 along the longitudinal direction. The conductors 811 to 813 are connected to a single-phase three-wire AC100V power supply. The conductor 811 corresponds to a neutral wire of a single-phase three-wire wiring, and is disposed on a top surface in the catheter body 82. The conductors 812 and 813 correspond to a phase line, and are respectively disposed on both side surfaces in the catheter body 82.

In addition, the structure of the wiring duct 80 mounted on the power supply system 100 is not limited to the illustration. The power supply system 100 can be installed in any wiring duct, for example, a wiring duct having three conductors connected to a single-phase three-wire power source and two conductors (total five conductors) connected to a single-phase two-wire power source. In addition, the wiring duct 80 is not limited to being installed in a building, and may be installed on a roof or the like outside the building.

(2.2) Cable supply device The cable supply device 1 includes the cable portion 10, the connection portion 11, and the socket portion 12 as described above.

As shown in FIG. 2, the connection portion 11 includes a connection body 111 and a case 112.

The connecting body 111 includes a cylindrical body 1110, a pair of terminal plates 1111, and a pair of protruding portions 1112. The cylindrical body 1110 is formed of, for example, a resin material, and has electrical insulation properties. The cylindrical body 1110 is formed into a cylindrical shape (here, a cylindrical shape). The pair of terminal plates 1111 are formed of, for example, a metal material. The pair of terminal plates 1111 has conductivity. Each of the pair of terminal plates 1111 is formed in a plate shape. The pair of terminal plates 1111 protrude in opposite directions from the side of the cylindrical body 1110 in a direction orthogonal to the height direction (up and down direction) of the cylindrical body 1110. The pair of protruding portions 1112 are formed of, for example, a resin material. The pair of protruding portions 1112 has electrical insulation. The pair of protruding portions 1112 are formed in a plate shape. The pair of protruding portions 1112 protrude in opposite directions from the lower portion of the terminal plate 1111 on the side of the cylindrical body 1110 in a direction orthogonal to the height direction of the cylindrical body 1110. The pair of protruding portions 1112 protrude in parallel with the pair of terminal plates 1111, respectively.

The case 112 is formed of a resin material such as a synthetic resin, and has electrical insulation properties. The casing 112 is a hollow box shape, and has a shape in which two rectangular parallelepipeds with different widths are combined up and down. A connecting body 111 is provided on the upper surface of the casing 112. As shown in FIG. 1, the center of the bottom wall of the casing 112 is formed with a hole for introducing the cable portion 10.

Among the connecting portions 11, the cylindrical body 1110 is introduced into the connecting recessed portion 821 from below, and a pair of terminal plates 1111 are brought into contact with the conductors 812 and 813 of the wiring duct 80, and a pair of protruding portions 1112 are placed on a pair The lip 822 is electrically and mechanically connected to the wiring duct 80.

As shown in FIGS. 1 and 2, the socket portion 12 includes a socket case 121 and a socket body 122 stored in the socket case 121.

The socket case 121 is formed of a resin material such as a synthetic resin. The socket housing 121 has a longitudinal shape that is long in one direction (the up-down direction in FIG. 1), and is a flat shape that is flat in one direction (thickness direction) in a plane orthogonal to the long side direction. In addition, the socket housing 121 has a shape in which the thickness and width of the socket case 121 are reduced as the second end 1212 in the longitudinal direction approaches the first end 1211 and becomes narrower. The outer peripheral surface of the socket shell 121 is gently curved to protrude outward from the second end 1212 to the middle portion in the long side direction, and is gently curved to protrude inward from the middle portion in the long side direction to the first end 1211. In addition, the outer peripheral surface of the socket case 121 is a curved surface that is connected without drop throughout the entire circumference when viewed from a direction parallel to the longitudinal direction.

The socket housing 121 is composed of a combination of two components of a main body 1213 and a cover 1214. The main body 1213 and the cover 1214 have openings on the surfaces facing each other, and the openings are combined to align with each other. Thereby, an internal space is formed between the main body 1213 and the cover 1214 for receiving the socket body 122 and the like. The main body 1213 and the cover 1214 are temporarily fixed to each other by, for example, a method in which a plurality of coupling holes formed on the inner peripheral edge of the opening of one of the main body 1213 and the cover 1214 are hung from the inside of the opening of the other. A plurality of engaging claws protruding from the periphery. In this state, a plurality of coupling screws pass through one of the main body 1213 and the cover 1214 and are fastened to the other, so that the main body 1213 and the cover 1214 are coupled.

The first end 1211 of the socket case 121 is formed with an insertion hole for passing the cable portion 10 into the socket case 121. The insertion hole is a circular hole formed on a side wall (upper wall) of the first end 1211 of the socket housing 121. In this embodiment, a pair of semicircular notches formed by the main body 1213 and the cover 1214 are aligned to form a circular insertion hole.

The second end 1212 of the socket housing 121 has an opening 1215 for exposing the socket body 122. The opening 1215 is a hole penetrating a wall (bottom wall) on the second end 1212 side of the socket case 121, and is formed in a rectangular shape that is long in the width direction of the socket case 121. In addition, the opening portion 1215 may be formed on a side surface of the socket case 121, for example. In this case, the connection port 120 of the socket body 122 faces the side of the socket case 121.

The socket body 122 includes components such as a housing 1220 made of synthetic resin, a knife receiving member housed in the housing 1220, and the like. The socket body 122 is housed in the socket case 121 so that one surface (connecting surface) of the housing 1220 is exposed from the opening portion 1215. The connection surface forms a connection opening 120 through which a blade (or pin) of a plug is inserted. The socket body 122 has a detachment prevention mechanism that prevents the blade (or pin) of the plug from being detached by rotating the plug.

Furthermore, the socket body 122 has a terminal portion for connecting the electric wires of the cable portion 10. The terminal portion is a so-called plug-in type quick junction terminal. In the present embodiment, a pair of power wires and a ground wire (ground wire) connected to the cable unit 10 with respect to the socket body 122 constitute a total of three electric wires.

The cable portion 10 is configured by a flexible power cord or cable. The cable portion 10 includes the above-mentioned electric wires (a pair of power wires and a ground wire), and a cover made of an insulating material that covers the electric wires. In this embodiment, each electric wire is a twisted wire composed of a plurality of wires. The cable portion 10 is made of, for example, a rubber-coated cable (two types of EP rubber-insulated chloroprene rubber-coated cable: 2PNCT, etc.).

The cable portion 10 includes the first end 101, the second end 102, and the deformed portion 103 as described above. The first end 101 of the cable portion 10 is introduced into the housing 112 and the connection body 111 of the connection portion 11. The first end 101 (power line) of the cable portion 10 is electrically connected to a pair of terminal plates 1111 of the connecting body 111. The second end 102 of the cable portion 10 is inserted into the socket housing 121 of the socket portion 12 through a penetration hole. The second end 102 (the electric wire) of the cable portion 10 is electrically connected to the socket body 122 (the blade receiving member).

The deformed portion 103 is located in the cable portion 10 between the first end 101 and the second end 102. The deformed portion 103 is variably formed into various shapes. The deformed portion 103 can be deformed into at least a first state that forms a ring shape (slightly circular shape). In this embodiment, the deformed portion 103 in the first state forms a ring (circle). By changing the shape of the deformed portion 103, the interval between the first end 101 and the second end 102 of the cable portion 10 (the interval between the connection portion 11 and the socket portion 12 of the cable device 1) is changed.

(2.3) Reel device As shown in FIGS. 1 and 2, the reel device 2 includes a reel case 20, a drum 21, and a take-up spring 22. The reel device 2 holds the wire 3 so as to be pulled out.

The reel case 20 is formed of, for example, a resin material. The reel case 20 is hollow and has a shape that combines a flat rectangular box-like portion and a semi-disc-like portion. The reel case 20 is attached to the cable portion 10 (fixed to the cable portion 10). The reel case 20 is attached to a portion between the first end (the upper end) 101 and the deformed portion 103 in the cable portion 10. That is, the reel case 20 is mounted between the connection portion 11 of the cable device 1 and the deformed portion 103 of the cable portion 10 (a portion higher than the deformed portion 103).

A drum 21 and a winding spring 22 are housed in the reel case 20. The cable portion 10 passes through the reel case 20 along one side (one side on the right side in FIG. 1) of the reel case 20 in one direction. The drum 21 and the take-up spring 22 are arranged in the reel case 20 on the other side (the left side in FIG. 1) in the above-mentioned one direction. A circular pull-out hole 203 is formed in the bottom wall of the reel case 20 below the drum 21.

The reel case 20 is formed by combining two components of the first half body 201 and the second half body 202. The first half body 201 and the second half body 202 have openings on mutually facing surfaces, and the openings are aligned and combined with each other. The first half body 201 and the second half body 202 are combined, for example, by a fitting structure provided at the edges of the openings facing each other. In each of the upper surface and the lower surface of the first half body 201 and the second half body 202, a semicircular notch is formed at the edge of the opening. The cable portion 10 is sandwiched by the edge portion of the notch formed on the upper surface of the first half body 201 and the edge portion of the notch formed on the upper surface of the second half body 202. Furthermore, the cable portion 10 is sandwiched by the edge portion of the notch formed on the lower surface of the first half body 201 and the edge portion of the notch formed on the lower surface of the second half body 202. Thereby, the reel case 20 is attached to the cable portion 10 (the position is fixed to the cable portion 10).

The drum 21 is formed of a resin material into a cylindrical shape (so-called bobbin shape) having flange portions at both ends, for example. The drum 21 is arranged in the reel case 20 and is rotatably held in the reel case 20 with its axial center as the center. The drum 21 winds the wire 3. The drum 21 takes up and feeds the wire 3. That is, the drum 21 is rotated clockwise around its axis to wind the wire 3, and the drum 21 is rotated counterclockwise to feed the wire 3.

The take-up spring 22 is a so-called spring spring, and is formed by winding a metal plate having elasticity into a spiral shape. The winding spring 22 is arranged inside the drum 21 so that the direction of the center axis of the winding spring 22 is the direction along the center axis of the drum 21. The take-up spring 22 applies an elastic force to the drum 21 in the direction of the take-up wire 3 (clockwise rotation). The drum 21 and the take-up spring 22 function as a tension applying section that applies tension to the wire 3 to the wire 3.

The wire 3 is, for example, a strand made of synthetic resin. Among the wires 3, the first end is fixed to the drum 21. The wire 3 is wound around the drum 21 (a cylindrical portion), and is drawn out from the reel case 20 through the drawing hole 203 to the outside of the reel case 20. The second end of the wire 3 is bonded to a part (bonded portion) of the deformed portion 103 of the cable portion 10. More specifically, the deformed portion 103 of the cable portion 10 is attached with a band 30 along the circumferential direction of the cable portion 10, and the second end of the wire 3 is tied to the band 30 to be coupled to the deformed portion 103. The orientation of the wire 3 in the second end of the wire 3 is variable with respect to the deformed portion 103 (with respect to the band 30) of the cable portion 10.

The pull-out length of the wire 3 that can be pulled out from the reel device 2 is a range between the first length and the second length (where the first length <the second length). Here, the pulled-out length of the wire 3 means the length of the following: a portion of the wire 3 that is pulled out from the reel case 20 in the entire length of the wire 3. The first length is the length of substantially the entire length of the wire 3 taken up from the reel device 2 in the state of the drum 21. For example, when a stop near the second end of the wire 3 pulled out from the reel device 2 is provided that cannot pass the size of the pull-out hole 203, the first length is between the second end of the wire 3 and the stop. Length of the part. The second length is the length of substantially the entire length of the wire 3 that has been pulled from the reel device 2 in a state where the wire 3 has been fed from the drum 21. In addition, in the present embodiment, the entire length of the wire 3 is determined to be the second length shorter than the cable portion 10 between the portion where the wire 3 is joined (the joining portion) and the portion where the reel device 2 is installed in the cable portion 10. length.

(2.4) Power Supply System As shown in FIG. 1, the power supply system 100 is mounted on the wiring duct 80 by attaching the connection portion 11 to the wiring duct 80.

The connection portion 11 is mounted on the wiring duct 80, and the cable device 1 is suspended from the wiring duct 80. In the power supply system 100, the reel device 2 is mounted on a portion of the cable portion 10 between the first end 101 and the deformed portion 103 (a portion higher than the deformed portion 103). Furthermore, the wire 3 pulled out from the reel device 2 is coupled to a part (combined portion) of the deformed portion 103, and the reel device 2 pulls the coupled portion of the deformed portion 103 by the wire 3.

In the power supply system 100 configured as described above, when the deforming section 103 takes up the wire 3 by the reel device 2 so that the drawn length of the wire 3 becomes the first length, it forms the first ring-shaped (slightly circular) shape. One state (refer to the solid line in FIG. 1). When the deformed portion 103 is in the first state, the interval between the first end 101 and the second end 102 of the cable portion 10 is the smallest. In other words, when the deformed portion 103 is in the first state, the second end 102 of the cable portion 10 is positioned at the uppermost position.

As shown by the solid line in FIG. 1, in this embodiment, in the first state of the deformed portion 103, the joint portion of the deformed portion 103 with the wire 3 is located at the center of the deformed portion 103 (becomes the deformed portion 103). The center of the ring part) is more upside. In other words, in the present embodiment, the wire 3 (the second end) is coupled to the deformed portion 103 at an upper side than the center of the annular deformed portion 103 in the first state of the deformed portion 103.

Moreover, in the first state of the deformed portion 103, the lower end portion of the deformed portion 103 is higher than the second end (lower end) 102 of the cable portion 10, and is located at a position lower than One end is further up. In other words, in the first state of the deformed portion 103, the interval in the vertical direction between the coupling portion and the second end 102 of the cable portion 10 is larger than the interval in the vertical direction between the coupling portion and the lower end portion of the deformation portion 103. These intervals are determined by the joining locations of the wires 3 in the deformed portion 103. That is, in the present embodiment, in the first state of the deformed portion 103, the position of the above-mentioned joint portion is set such that the lower end portion of the deformed portion 103 is higher than the second end 102 of the cable portion 10 (located in the The lower end of the cable supply device 1 is further above).

The deforming section 103 may be deformed into a second state different from the first state. The second state of the deformed portion 103 is a state where the interval between the first end 101 and the second end 102 of the cable portion 10 is more separated than the first state of the deformed portion 103 (see the two-point chain line in FIG. 1). In this embodiment, the deformed portion 103 in the second state has a ring-shaped portion having a smaller diameter than the deformed portion 103 in the first state. The position of the second end 102 of the cable portion 10 when the deformed portion 103 is in the second state is located lower than the position of the second end 102 of the cable portion 10 when the deformed portion 103 is in the first state.

As shown by the two-dot chain line in FIG. 1, in the present embodiment, in the second state of the deformed portion 103, the above-mentioned joint portion is positioned higher than the center of the deformed portion 103. In the second state of the deformed portion 103, the lower end portion of the deformed portion 103 is higher than the second end 102 of the cable portion 10 and is positioned higher than the lower end of the cable supply device 1.

FIG. 3A shows the state of the power supply system 100 when the deformed portion 103 is in the first state (storage state), and FIGS. 3B and 3C show the state of the power supply system 100 when the deformed portion 103 is in the second state (used state).

From the first state of the deformed portion 103 shown in FIG. 3A, for example, when the user stretches the socket portion 12 downward with his or her hand, the amount of pull-out of the wire 3 from the reel device 2 increases, and the deformed portion 103 is deformed toward the second state, which has a ring-shaped portion having a smaller diameter than the first state (see FIG. 3B). When the user stretches the socket portion 12 further down from this point, the amount of pull-out of the wire 3 from the reel device 2 (the pull-out length to the second length) increases, and the round shape of the deformed portion 103 increases. The diameter of the portion becomes smaller (see FIG. 3C). That is, the user can pull down the socket portion 12 to a desired height within a range between the first length and the second length of the pull-out length of the wire 3, and can insert the plug into the socket portion 12 at the desired height. Connection port 120.

In the present embodiment, in the second state of the deformed portion 103, the reel device 2 holds the wire 3 so that the wire 3 receives the tension formed by the drum 21 and the take-up spring 22. Therefore, in the second state of the deformed portion 103 (see FIGS. 3B and 3C), when the user releases his or her hand from the socket portion 12, the wire 3 is pulled back into the reel device 2 by the aforementioned tension. Accordingly, when the socket portion 12 is not used (when the plug is not connected to the connection port 120), the deforming portion 103 is deformed to the first state (see FIG. 3A). Therefore, when the socket portion 12 is not used, the socket portion 12 does not easily hinder the movement of a person, and does not become a major factor that limits the range of movement of a person.

On the other hand, when the socket portion 12 is used (in a state where the plug is connected to the connection port 120), the deforming portion 103 receives a downward force from the plug. Thereby, the deformed portion 103 is maintained in the second state.

As described above, when the power supply system 100 according to this embodiment uses the socket portion 12, the socket portion 12 can be pulled down to an arbitrary position. In addition, when the socket portion 12 is not in use, the socket portion 12 can be pulled up first, so it is not easy to become a major factor that restricts the range of movement of a person. Furthermore, in the power supply system 100 according to this embodiment, for example, it is not necessary to process the cable portion into a spiral shape as in the ceiling-hanging socket of Document 1, and it is not easy to laboriously manufacture the cable portion 10. In the power supply system 100 of this embodiment, the deformed portion 103 is formed in a ring shape in the first state, and the distance between the two ends of the cable portion 10 in the second state of the deformed portion 103 is smaller than that of the deformed portion 103. One state is more separated (the deformed portion 103 has a ring-shaped portion). Therefore, when viewed from one direction (for example, a direction along a horizontal plane), there are fewer portions of the cable portion 10 that overlap with other portions of the cable portion 10. Therefore, it is possible to suppress the temperature rise of the cable portion 10 compared with the ceiling-wall-suspended socket of Document 1 provided with the coil.

(3) Modifications The above embodiment is only one of various embodiments of the present invention. As long as the above embodiment can achieve the purpose of the present invention, various changes can be made in accordance with the design and the like. Hereinafter, modified examples of the above embodiment will be listed. The above-mentioned embodiment is hereinafter referred to as a "basic example". Modifications and basic examples described below can be used in appropriate combination.

(3.1) Modification 1 A power supply system 100 according to this modification will be described with reference to FIG. 6.

In this modification, the second length of the wire 3 (the length of the wire 3 that can be pulled out from the reel device 2) is longer than the basic example, which is different from the basic example. In detail, in the present modification, the total length of the wire 3 is defined as a second length longer than the length of the cable portion 10 between the portion where the wire 3 is joined (the joining portion) and the portion where the reel device 2 is mounted in the cable portion 10. .

Therefore, in this modification, the socket portion 12 can be pulled further downward from the state shown in FIG. 3C, for example, so that the cable portion 10 can be changed into a straight state (see FIG. 6). That is, in the present modification, the second state of the deformed portion 103 includes a linear state along the vertical direction.

In addition, in this modification, when the deformed portion 103 is changed from a circular shape to a straight shape, the cable portion 10 may be twisted. Therefore, in the present modification, it is preferable that the cable supply device 1 has a twist absorbing mechanism that absorbs twist. The twist absorbing mechanism may be constituted by, for example, the cable portion 10 having a twistable flexibility.

(3.2) Modification 2 A power supply system 100 according to this modification will be described with reference to FIG. 7.

In this modification, the reel device 2 is provided in the connection part 11, and this point differs from a basic example. That is, in the present modification, the drum 21 and the take-up spring 22 are housed in the housing 112 of the connection portion 11. Moreover, the wire 3 is pulled out from the pull-out hole 1120 provided in the housing 112 of the connection portion 11 to the outside of the housing 112.

In this modified example, the deformed portion 103 may be deformed in a first state and a second state to adjust the height (position in the vertical direction) of the socket portion 12. In addition, when the socket portion 12 is not used, the socket portion 12 may be pulled up first, and the socket portion 12 is not likely to be a major factor restricting the range of movement of a person. In addition, compared with the ceiling-mounted pendant socket of Document 1 provided with a coil, there are fewer portions of the cable portion 10 that overlap with other portions of the cable portion 10 when viewed from one direction. The temperature rise of the cable portion 10 is suppressed.

(3.3) Modification 3 A power supply system 100 according to this modification will be described with reference to FIG. 8.

In this modification, the reel device 2 is not housed in the housing 112 of the connection portion 11 but is suspended from the housing 112, which is different from the modification 2. That is, in the power supply system 100 of this modification, the hook 113 is provided on the lower surface of the housing 112 of the connection portion 11, and the upper surface of the reel case 20 of the reel device 2 The surface of the pull-out hole 203 is a surface on the opposite side) is provided with a ring 204. Then, the loop 204 of the reel device 2 (in the example shown in the figure, the hook 113 of the connection portion 11 is hooked via the S-shaped hook 205 as a connecting member), so that the reel device 2 is suspended from the connection portion 11 . Thereby, the reel device 2 is attached to the connection part 11.

In this modified example, the deformed portion 103 may be deformed in a first state and a second state to adjust the height (position in the vertical direction) of the socket portion 12. Moreover, since the reel device 2 is not attached to the cable portion 10 but is attached to the connection portion 11, the load of the reel device 2 is not easily loaded on the cable portion 10. In addition, since the reel device 2 is mounted on the connection portion 11, the reel device 2 is not easily affected even when, for example, a user stretches the socket portion 12 below.

In this modification, the structure of attaching the reel device 2 to the connection portion 11 is not limited to the structure of FIG. 8. For example, the hook 113 may be a loop hook and may be free of the connecting member 205. Moreover, it may be other mounting structures such as a clamp or a screw instead of a hook.

(3.4) Other Modifications The reel device 2 may be provided with a lock mechanism to control the deformation of the deformation section 103 from the second state to the first state. The lock mechanism may include, for example, a stopper which is arranged in the reel case 20 and is movable between a position where the drum 21 is allowed to rotate and a position where the drum 21 is prohibited from rotating. For example, the flange 21 of the drum 21 may be formed with a recessed portion, and the stopper may be moved between a position that enters the recessed portion and a position that exits from the recessed portion. In this case, the reel device 2 may also be provided with the stopper moved to a position retracted from the recessed portion (for example, a rope connected to the stopper, a button, etc.) in response to a user's operation. Alternatively, the reel device 2 may have a structure such as that used for a roller blind or a retractable cable, which can maintain the pulled-out length of the wire 3 and automatically accommodate the wire 3 to the reel in response to the pulling operation of the wire 3壳 20 内。 The shell 20.

The power supply system 100 may also have a combination of a plurality of reel devices 2 and a deformation section 103. For example, a combination of a plurality of reel devices 2 and a deformed portion 103 may be provided between the first end 101 and the second end 102 of the cable portion 10.

The cable supply device 1 may not include the connection portion 11. For example, the first end 101 of the cable portion 10 may be directly connected to a buried socket provided on the top wall of a room in a building.

The cable supply device 1 may not include the socket portion 12. For example, the second end 102 of the cable portion 10 may be provided with a connector portion to which a dedicated power connector can be connected, instead of the socket portion 12 to which a universal plug can be connected.

The number of the connection ports 120 provided in the socket portion 12 is not limited to two, and may be one, or three or more. The socket portion 12 does not need to have a detachment preventing mechanism as a plug. The socket section 12 may be, for example, a socket for 100V AC or DC. In addition, the socket portion 12 may be a so-called magnetic socket that can be combined with a plug connected to the electrical equipment 301 by magnetic force.

The shapes of the housing 112 of the connection portion 11, the socket housing 121 of the socket portion 12, and the reel case 20 of the reel device 2 may be appropriately changed as needed.

The number of the power supply systems 100 installed in the wiring duct 80 is not limited to one, and two or more power supply systems 100 may be installed in the wiring duct 80.

(4) As for the aspect, as can be understood from the basic examples and modifications described above, the power supply system (100) of the first aspect includes: a suspended cable supply device (1), and a cable portion (10); and The reel device (2) is installed on the cable supply device (1), and the wire (3) is held to be pulled out. The cable portion (10) includes a deforming portion (103) that deforms in a first state and a second state. The deformed portion (103) forms a ring shape in the first state. In the power supply cable device (1), the space between the two ends is more separated in the second state than in the first state of the deformed portion (103). The wire (3) pulled out from the reel device (2) is coupled to a part of the deformed portion (103) of the cable portion (10). The reel device (2) holds the deformed portion (103) by a wire (3).

With this configuration, the user can appropriately change the height of the lower end portion of the cable portion (10). In addition, when the power supply system (100) is not used, the lower end portion of the cable portion (10) can be set at the first state (compared to the second state of the deformed portion 103) by setting the deformed portion (103) to the first state. Above, it is not easy to become the main factor limiting the scope of human action. In addition, since it is not necessary to form a portion of the cable portion (10) other than both end portions in a spiral shape, it is not easy to manufacture the cable portion (10) compared to the ceiling-wall-suspended socket of Document 1. Laborious. In addition, compared with the ceiling-mounted hanging socket of Document 1, when viewed from one direction, fewer portions of the cable portion 10 overlap with other portions of the cable portion 10, so that the cable portion can be suppressed. 10 Temperature rise. In addition, since the reel device (2) is installed on the cable supply device (1), it is not necessary to install the reel device (2) on the outside (such as the top wall or wall surface, wiring duct 80, etc.), and it is easy to replace the power supply system ( 100). In addition, in the first state, the deformed portion (103) is formed into a ring shape (slightly circular shape), and the size of the cable supply device (1) (the diameter of the deformed portion 103) can be reduced.

The power supply system (100) of the second aspect is connected to the first aspect, and the cable supply device (1) is further provided with a connection portion (11) on the upper end (the first end 101) of the cable portion (10). ). The connecting portion (11) is mounted on the wiring duct (80) and is electrically connected to a power supply channel (conductor 81) of the wiring duct (80). The reel device (2) is provided in the connecting portion (11).

According to this configuration, the size of the power supply system (100) including the cable supply device (1) and the reel device (2) can be reduced. In addition, since the connection part (11) is provided with a reel device (2), the power supply system (100) can be self-wiring duct (80) only by disconnecting the connection part (11) from the wiring duct (80). Removed, easy replacement of power supply system (100).

The third aspect of the power supply system (100) is connected to the first aspect, and the cable supply device (1) is further provided with a connection portion (11) on the upper end (the first end 101) of the cable portion (10). ). The connecting portion (11) is mounted on the wiring duct (80) and is electrically connected to a power supply channel (conductor 81) of the wiring duct (80). The reel device (2) is provided in the cable portion (10).

According to this configuration, the size of the power supply system (100) can be reduced compared to a case where the reel device (2) is installed outside. In addition, the cable part (10) is provided with a reel device (2), so that the power supply system (100) can be taken out from the wiring duct (80) only by disconnecting the connection part (11) from the wiring duct (80). This makes it easy to replace the power supply system (100).

The power supply system (100) of the fourth aspect is connected to any one of the first to third aspects, and the cable supply device (1) is at one end (second end) of the cable portion (10) on the lower side 102) further includes a socket portion (12).

According to this configuration, electric power can be supplied to the electrical equipment (301) connected to the socket section (12) through the cable section (10).

The power supply system (100) of the fifth aspect is connected to any one of the first to fourth aspects, so that the lower end portion of the deformed portion (103) in the first condition is lower than that of the cable supply device (1). The lower end (the lower end of the socket portion 12) is further above.

According to this configuration, in the first state of the deformed portion (103), the cable portion (10) is unlikely to be a major factor that restricts the range of movement of a person.

The power supply system (100) of the sixth aspect is connected to any one of the first to fifth aspects, and the wire (3) is connected to the upper side than the center of the annular deformed portion (103) in the first aspect. To the deformed portion (103).

According to this configuration, the reel device (2) can stably hold the deformed portion (103) compared to a case where the center of the deformed portion of the wire in the first state is coupled to the deformed portion at a lower side.

The power supply system (100) of the seventh aspect is connected to any one of the first to sixth aspects, and the reel device (2) has a tension applying section (drum 21, coil spring 22), and The tension for pulling back the wire (3) is given to the wire (3).

According to this configuration, since the wire rod (3) is pulled back into the reel device (2), the deformed portion (103) is pulled by the wire rod (3) to change from the second state to the first state. Therefore, when the power supply system (100) is not used, the cable portion (10) does not easily become a major factor that restricts the range of action of a person.

The power supply system (100) of the eighth aspect, in the seventh aspect, causes the reel device (2) to have: a locking mechanism that restricts the deformation of the deformation part (103) from the second state to the first state.

According to this configuration, the deformed portion (103) can be maintained in the second state.

In the ninth aspect of the power supply system (100), in the seventh aspect, the reel device (2) holds the wire (3) in the deformed portion (103) and the wire (3) is subjected to the above tension.

With this configuration, the deformed portion (103) can be changed from the second state to the first state.

100‧‧‧ Power Supply System

1‧‧‧ cable supply device

10‧‧‧Cable Department

101‧‧‧ first end (top end)

102‧‧‧Second end (lower end)

103‧‧‧Deformation Department

11‧‧‧ Connection Department

111‧‧‧ Linker

112‧‧‧shell

1110‧‧‧Tube

1111‧‧‧A pair of terminal boards

1112‧‧‧ a pair of protrusions

12‧‧‧Socket Department

120‧‧‧Connector

121‧‧‧Socket Shell

122‧‧‧ Ontology

1213‧‧‧Subject

1214‧‧‧ Cover

1215‧‧‧ opening

1220‧‧‧shell

113‧‧‧hook

2‧‧‧ Reel device

20‧‧‧ Reel case

201‧‧‧ first half

202‧‧‧Second Half

203‧‧‧Pull Out

204‧‧‧circle

205‧‧‧S hook (connecting member)

21‧‧‧Drum (Tensioner)

22‧‧‧ Winding spring (tension applying section)

3‧‧‧ Wire

30‧‧‧ Girdle

300‧‧‧ use surface

301‧‧‧Electrical Equipment

80‧‧‧Wiring duct

81‧‧‧Conductor (power supply channel)

811 ～ 813‧‧‧Conductor

82‧‧‧ catheter body

821‧‧‧Concave

822‧‧‧Lip

FIG. 1 is a perspective view of a power supply system and a wiring duct according to an embodiment of the present invention. FIG. 2 is a perspective view of a power supply system and a wiring duct like the above, and a state in which the power supply system is removed from the wiring duct. FIGS. 3A to 3C are perspective views of the power supply system and wiring duct like the above, and showing different states of the power supply system. FIG. 4 is an explanatory diagram showing an example of use of the power supply system like the above, and showing the state when the deformed portion is in the second state. FIG. 5 is an explanatory diagram showing a usage example of the power supply system like the above, and showing the state when the deformed portion is in the first state. FIG. 6 is a perspective view showing a power supply system and a wiring duct according to Modification 1 of an embodiment of the present invention, and showing a state when the deformed portion is in a second state. Fig. 7 is a perspective view of a power supply system and a wiring duct according to a second modification of the embodiment of the present invention. 8 is a perspective view of a power supply system and a wiring duct according to a third modification of the embodiment of the present invention.

Claims (9)

A power supply system includes: a suspended cable supply device having a cable portion; and a reel device installed on the cable supply device and holding a wire in a pull-out manner; and the cable portion has a The deformed part deformed in the first state and the second state, the deformed part forms a ring shape in the first state, and the cable supply device, compared with the first state, in the second state, the The space between the two ends of the deformed portion is further separated. The wire drawn from the reel device is joined to a part of the deformed portion of the cable portion, and the reel device holds the deformed portion by the wire. For example, the power supply system of the first patent application scope, wherein the cable supply device further includes a connection portion on the upper end of the cable portion, which is installed on the wiring duct and electrically connected to the power supply channel of the wiring duct; And the reel device is provided at the connecting portion. For example, the power supply system of the first patent application scope, wherein the cable supply device further includes a connection portion on the upper end of the cable portion, which is installed on the wiring duct and electrically connected to the power supply channel of the wiring duct; And the reel device is provided in the cable portion. For example, the power supply system according to any one of claims 1 to 3, wherein the cable supply device further has a socket portion at one end on the lower side of the cable portion. For example, the power supply system according to any one of claims 1 to 3, wherein the lower end portion of the deformed portion in the first state is located above an end on a lower side of the cable supply device. For example, the power supply system according to any one of claims 1 to 3, wherein the wire is coupled to the deformed portion at an upper side than the center of the annular deformed portion in the first state. For example, the power supply system according to any one of claims 1 to 3, wherein the reel device includes: a tension applying unit that applies tension to the wire to the wire. For example, the power supply system according to item 7 of the patent application scope, wherein the reel device has a locking mechanism to limit the deformation of the deformed portion from the second state to the first state. For example, the power supply system of the seventh scope of the patent application, wherein the reel device holds the wire in the second state of the deformed portion so that the wire is subjected to the tension.