KR102186876B1 - mobile safety wire - Google Patents

Abstract

The prevent invention relates to a mobile electric wire reel with a short circuit prevention device in case of inundation which is improved to wind or unwind a power wire of a predetermined length around an outer side of a rotating cylinder to use electricity in a work site during indoor or outdoor work, connect an inner end of the power wire wound around the outer side of the rotating cylinder to a power outlet attached to the rotating cylinder, and connect an outer end of the power wire to a power supply part, thereby supplying electricity to an electric device in the work site. More particularly, the present invention relates to a mobile electric wire reel with a short circuit prevention device in case of inundation which forms a rotating cylinder as a synthetic resin rotating cylinder to electrically isolate from metallic discs attached to both ends thereof, attaches an earth leakage circuit breaker and a power outlet to one metallic disc, mounts a ungrounded short circuit protection device on the other metallic disc, and provides the earth leakage circuit breaker, the power outlet, and the ungrounded short circuit protection device in the synthetic resin cylinder so that a current enough to cause an electric shock cannot be short-circuited even though an electric terminal is inundated when using the electric wire reel. Therefore, since the earth leakage circuit breaker, the power outlet, and the ungrounded short circuit protection device are received in the synthetic resin cylinder not to be exposed to an outside, the contact with a worker is blocked, thereby providing the electric wire reel with ensured safety and durability.

Description

Mobile safety wire equipped with a leakage protection device in case of flooding

The present invention enables a power line of a certain length to be wound or unwound on the outer surface of a rotating cylinder so that electricity can be used at the work site when working indoors or outdoors, and the inner end of the power line wound around the outer surface of the rotating cylinder is attached to the rotating cylinder. It is an improved wire reel that connects to a power outlet and connects the outer end to the power supply to supply electricity to the electrical equipment in the workplace.More specifically, the rotating cylinder is formed of a synthetic water support cylinder, and is electrically connected to the metal disk attached to both ends. It is isolated, and an earth leakage breaker and a power outlet are attached to one metal disc, and a non-grounded earth leakage protection device is installed on the other metal disc, so that the earth leakage circuit breaker, power outlet, and non-grounding type earth leakage prevention device are accommodated inside the synthetic water support cylinder to prevent the wire reel. When using, even if the electrical terminal is flooded, electricity is not shorted enough to cause an electric shock to a person, so electricity can be safely used, and an earth leakage breaker, power outlet, and a non-grounded leakage prevention device are housed inside the synthetic water support cylinder and exposed to the outside. Because it is not possible, contact with the operator is blocked, and a wire reel is made that guarantees safety and durability.

Several types of non-grounding type electric leakage prevention devices are known as devices made to prevent electric shock due to electric leakage by preventing the generation and emission of leakage current during immersion.

For example, in the case of the invention of Patent No. 10-1197414, a device capable of preventing a short circuit is disclosed even when submerged, and in the invention, the terminal polarity fixing part connects the first and second input terminals and the ground terminal. When the first and second input terminals are arranged between the included input terminal part and the output terminal part including the first and second output terminals, the first input terminal-phase is connected to the phase voltage terminal and the neutral terminal of the AC power outlet. Regardless of whether the voltage terminal and the second input terminal-neutral terminal are connected to each other or vice versa, the first output terminal is always electrically connected to the neutral terminal and the second output terminal is electrically connected to the phase voltage terminal, The connection terminal block is electrically insulated by being separated from each other while being exposed to one side of the body made of an insulator, electrically connecting the first and second output terminals to the load, and connecting the first and second arranged on the upper surface of the terminal block. Including a terminal, and having an electric leakage protection conductor on the outer periphery of the terminal

The electric leakage protection conductor is not connected to the second connection terminal electrically connected to the phase voltage terminal, but is connected to the first connection terminal, which is connected to the neutral point terminal, and at least some connection terminal blocks above the connection terminal block on the side of the connection terminal block. It is arranged around the second connection terminal in a form that surrounds at least one of a part of each of the side and upper sides of the terminal, and when the connection terminal block is flooded, the current from the second connection terminal block flows into the electric leakage protection conductor through water, and the other place It detects short circuit and electric shock when submerged by preventing the flow of more than enough current to cause electric shock.

In addition, Patent No. 10-1801772, even if exposed terminals of an electric device are flooded, reduces leakage current flowing between the terminals, thereby preventing electric shock and ensuring the normal operation of the electric device, and preventing electric and electromagnetic waves generated from outside. Disclosed is a non-grounding type short circuit prevention device that can be reduced.

Therefore, the invention

An input terminal unit including a first input terminal and a second input terminal; An output terminal unit including a first output terminal and a second output terminal; An electromagnetic wave receiving unit disposed adjacent to the input terminal unit and configured to receive an electromagnetic wave emitted from an input terminal electrically connected to a phase voltage terminal among the first and second input terminals; It is disposed between the input terminal unit and the output terminal unit, and determines a connection relationship between the first input terminal and the second input terminal and the first output terminal and the second output terminal according to a control signal received from the electromagnetic wave receiving unit A terminal polarity fixing part configured to allow the first output terminal to be electrically connected to the neutral point terminal and the second output terminal to be electrically connected to the phase voltage terminal; The body part made of an insulator, the first connection terminal and the first connection terminal, which are arranged to be electrically insulated by being spaced apart from each other while being exposed on the upper surface of the body part, and to electrically connect the first output terminal and the second output terminal to a load, respectively. A connection terminal unit including two connection terminals; And a short circuit not electrically connected to the second connection terminal electrically connected to the phase voltage terminal, but electrically connected to the first connection terminal electrically connected to the neutral terminal, and disposed around the second connection terminal. It is composed of a non-grounding type electric leakage prevention device.

The electromagnetic wave receiver,

An antenna for receiving an electromagnetic wave emitted from an input terminal electrically connected to a phase voltage terminal among the first and second input terminals; And transforming the electromagnetic wave received from the input terminal electrically connected to the phase voltage terminal from a sine wave to a square wave, and comparing the magnitude of the peak value of the positive pole appearing in the square wave with a reference value. However, a logic high voltage is output to the output terminal only when the peak value of the positive pole is greater than the reference value, and a logic low voltage is output when the peak value of the positive pole is less than or equal to the reference value. Includes; an analog-to-digital conversion unit to be outputted,

The terminal polarity fixing unit further includes an SMPS unit for converting an AC voltage input through the first input terminal and the second input terminal into a DC voltage required for the operation of the switching control unit, wherein the switching control unit comprises: When the first control signal is transmitted, by supplying the DC voltage from the SMPS unit, it is characterized in that current flows through the relay coil,

The electric leakage prevention conductor is provided in a form surrounding at least one of at least a portion of a side of the connection terminal portion, at least a portion of an upper portion of the connection terminal portion, and at least a portion of each of a side and an upper portion of the connection terminal portion, and the first 1 A vertical conductor portion passing through the body portion downward at the connection terminal, a bottom conductor portion bent horizontally at an end of the vertical conductor portion and extending outward of the bottom across the bottom of the body portion, and the bottom conductor portion By forming a plate-shaped side conductor portion bent upward at the end and extending to a height not lower than the upper surface of the connection terminal portion while facing the side surface of the body portion, a non-grounding type electric leakage prevention device is formed, and the electrical device through the device When the exposed terminals of are flooded, the leakage current flowing between the terminals is reduced to prevent electric shock, assuring the normal operation of the electric device, and reducing external electric and electromagnetic waves.

The present invention is configured so that a non-grounded electric leakage prevention device patented in Patent No. 1801772 can be applied to a mobile electric wire reel to supply electricity to electric equipment used in the workplace more safely, and to make a electric wire reel without risk of electric shock even if the electric equipment is flooded. .

Conventional wire reels are made to supply electricity to a work site when the power supply unit is working in a distant place, and a power outlet and an earth leakage breaker are attached to a rotating cylinder around which the power line is wound.

Therefore, in the conventional electric wire reel, since the power outlet and the earth leakage circuit breaker are protrudingly attached to the surfaces of both sides of the rotating cylinder, there is a high risk of damage to the power supply device due to the exposed part easily contacting the surrounding objects when used at the work site. There is a risk of electric shock, and there is no leakage protection device to prevent electric shock when flooded, so if you use it without knowing the fact that the electric terminal is flooded, there is a risk of electric shock due to leakage of electricity to the worker. There were inconveniences that could not be guaranteed.

Patent Registration No. 10-1197414 Patent registration No. 10-1801772 Utility Model Publication No. 20-2010-000222

The present invention was developed to solve the inconvenience.

In the present invention, the rotating cylinder constituting the electric wire reel is formed into a synthetic water support cylinder to electrically isolate it from the metal disk attached to both openings, and the synthetic water support cylinder and the metal disk are combined with fastening bolts, and the assembly type is configured to be disassembled. In this way, a rotation shaft insertion hole is formed in the centers of both metal discs, and an earth leakage breaker and power outlet are placed on the inner side of one metal disc, and a non-grounded leakage prevention device is disposed on the inner side of the other metal disc. The power outlet, the power outlet, and the non-grounded electric leakage prevention device are housed inside the synthetic water support cylinder to make electrical wiring.Therefore, the power outlet, the electric leakage breaker, and the non-grounded electric leakage prevention device are not exposed to the outside of the synthetic water support cylinder, so there is a risk of contact with the operator. There is no safety, and even if the electrical terminal is flooded, electric shock is prevented, and the circuit of the earth leakage breaker is configured to be tripped.

In order to achieve the above object, the present invention puts two support angles 20 and 21 side by side at a certain interval, and one end is bent upwardly at a right angle to collect the upper ends of the upward bent portions 20a and 21a so that they touch each other. The rotation shaft 25 is then bent in a direction parallel to the support angle, and the two bent parts are inserted into the center of the handle 23 to be combined, and the middle of the upward bent is connected with a connection plate 24 to protrude from the center of the connection plate in a direction parallel to the support angle. A wire reel stand (2) that attaches and forms a male thread (25a) at the protruding end of the rotation shaft to fasten the separation prevention nut (25b), and puts a protective cap (25c) on the protruding screw;

A synthetic water support cylinder (10) formed of synthetic resin and open at both ends with a certain standard is provided, and a center pipe (11) with a rotation shaft insertion hole formed in the center is arranged to provide 3 to 5 pieces between the outer peripheral surface of the center pipe and the inner peripheral surface of the synthetic water support cylinder. A reinforcement body formed at regular intervals along the length direction from the inner surface of the synthetic water support cylinder 10 to the outer end of the connection section 12 by radially connecting the connection section 12 to the center pipe 14), forming female screw holes 15 at the centers of both ends of the reinforcement body, forming a power line insertion hole 10a on the outer periphery of the opening of the synthetic water support cylinder opposite from the side where the connection section 12 is arranged, and , Synthetic water support cylinder 10 is made of a metal disc at both ends, and a rotation shaft insertion hole 16a is formed in the center, the outer diameter is larger than the outer diameter of the synthetic water support cylinder, and the inner surface is in contact with the opening at both ends of the synthetic water support cylinder. By attaching a female screw hole 15 formed in the reinforcement body of the sieve and a metal disc 16 having a connection hole 16b formed at the facing position, a fastening bolt (15) from the connection hole 16b to the female screw hole 15 of the reinforcement body ( By screwing 17), the synthetic water support cylinder (10) and the metal disk (16) are combined to form a rotating cylinder (1),

The rotation shaft 25 of the stand 2 is passed through the rotation shaft 25 of the stand 2 through the rotation shaft insertion holes 16a of the metal discs on both sides of the rotation cylinder 1, and a separation preventing nut ( A rotating cylinder (1) that is screwed in 25b) and a protective cap (25c) is attached to the outside of the threaded portion so that the rotating cylinder (1) is coupled to the stand (2) to rotate,

Insulation sheet 18 is attached to the inner surface of the metal disc on one side of the rotating cylinder 1, and the body of the non-grounded electric leakage prevention device 3 is placed on the surface of the insulating sheet, and a fixing cover 18b is placed on the opposite surface of the insulating sheet. The protruding end of the fixing bolt (18a) attached to the metal disk is inserted into the fastening hole (18c) of the fixing cover (18b) and fixed with a coupling nut (18d), and an earth leakage breaker (4) and a power supply are provided on the inner surface of the metal disk on the opposite side. The operation switch (4a) of the earth leakage circuit breaker (4) by attaching an outlet (5) is provided with a protective cover (4d) for protecting the operation switch on the outer surface by piercing the metal disc and exposing it to the outside, and the power outlet (5) is a plug insertion groove. Attach (5a) to be exposed to the outside of the metal disk,

The inner end (6a) of the power line 6 connected to the power supply is inserted into the synthetic water support cylinder through the power line insertion hole 10a of the main wall of the synthetic water support cylinder 10, and is inserted into the input terminal 4b of the earth leakage breaker. A separation prevention port (6c) is installed on the outer surface of the power line (6) connected to the input terminal of the earth leakage breaker so that the inner end of the power line is not separated from the synthetic water support cylinder to the outside, and the output side terminal (4c) of the earth leakage breaker ) To the power outlet (5) through the non-grounded leakage protection device (3), and the ground wire of the power line (6) to the ground terminal (5b) of the power outlet and the phase voltage connection terminal of the non-grounded leakage protection device It is the device that I made.

In the present invention as described above, by coupling the metal disks to the openings on both sides of the synthetic water support cylinder, the metal disks on both sides and the synthetic water support cylinder can be electrically isolated, and the rotary shaft insertion hole drilled in the center of the metal disk is inserted into the synthetic water support cylinder. When the rotation shaft 25 of the stand 2 is inserted in alignment with the rotation shaft insertion hole of the center pipe 11 in the center of the body, the rotation cylinder is inserted into the rotation axis of the stand and rotates. This causes the power cord to be connected to the outer circumference of the rotation cylinder. Winding or unwinding is conveniently performed, and noise is prevented when the rotating cylinder is rotated, and a leakage breaker (4) and a power outlet (5) are provided on the inner surface of the metal disk on one side of the metal disk on both sides of the rotating synthetic water support cylinder. A fixing bolt attached to the metal disk in the fastening hole of the fixing cover covered on the upper surface of the non-grounded electric leakage prevention device by placing the insulation sheet 18 on the inner surface of the metal disk on the opposite side Since the (18a) is joined and fixed with the coupling nut (18d), the non-grounding type leakage protection device can be securely fixed to the metal disk, and the non-grounding type leakage prevention device's fixing cover is covered with a synthetic resin on a metal cover. It is possible to further expand the branch area.

Therefore, since the earth leakage circuit breaker, the power outlet and the non-grounding type leakage protection device are housed in the rotating cylinder, they are not exposed to the outside to prevent contact with the operator, and there is an advantage of ensuring safety because there is no contact with surrounding objects. Due to the installation of the electric leakage prevention device, even if the electrical device terminal is flooded, electric shock due to electric leakage is reliably prevented, so that a safe wire reel can be used.

1 is an overall perspective view showing the configuration of the present invention
Figure 2 (a) (b) (c) is a detailed exploded view of the rotating cylindrical part of the present invention
3 is a cross-sectional view of FIG. 1
4 is an exemplary view of electrical wiring of an earth leakage circuit breaker, a power outlet, and a non-grounded earth leakage prevention device attached to a metal disk of the present invention.
5 is a cross-sectional view of a rotating cylinder attached with an electric leakage preventing device of the present invention
6 is a cross-sectional view of a rotating cylinder equipped with an earth leakage circuit breaker and a power outlet according to the present invention.

In the present invention, the rotating cylinder constituting the electric wire reel is molded into a synthetic water support cylinder to electrically isolate it from the metal disk attached to both side openings, and the synthetic water support cylinder and the metal disk are screwed and separated by fastening bolts. In this way, a rotation shaft insertion hole is formed in the centers of both metal discs, and an earth leakage breaker and power outlet are placed on the inner side of one metal disc, and a non-grounded leakage prevention device is disposed on the inner side of the other metal disc. The power outlet, the power outlet, and the non-grounded leakage protection are housed inside the synthetic water support cylinder to ensure electrical wiring, so there is no risk of contact with the operator as the power outlet, leakage breaker, and non-grounded leakage prevention device are not exposed to the outside of the synthetic water support cylinder. It is configured to ensure safety, prevent electric shock even if the electrical terminal is flooded, and prevent the circuit of the earth leakage breaker from tripping.

In order to achieve the above object, the present invention puts two support angles 20 and 21 side by side at a certain interval, and one end is bent upwardly at a right angle to collect the upper ends of the upward bent portions 20a and 21a so that they touch each other. The two bent parts are then bent in a direction parallel to the support angle, and the two bent parts are inserted into the center of the handle 23, and the middle of the upward bent part is connected with a connection plate 24 to protrude from the center of the connection plate in a direction parallel to the support angle. A wire reel stand (2) that attaches and forms a male thread (25a) at the protruding end of the rotation shaft to fasten the separation prevention nut (25b), and puts a protective cap (25c) on the protruding screw;

It is molded of synthetic resin, has a certain standard, and is provided with a synthetic water support cylinder (10) open at both ends, and a center pipe (11) with a rotation shaft insertion hole formed in the center is arranged to be 3~5 between the outer peripheral surface of the center pipe and the inner peripheral surface of the synthetic water support cylinder. Reinforcement formed by radially connecting the two connection gaps 12 so that the central pipe is maintained in the center of the synthetic water support cylinder, and the outer end of the connection gap 12 is formed side by side at regular intervals along the longitudinal direction from the inner surface of the synthetic water support cylinder 10 It is joined to the sieve 14, and female screw holes 15 are formed in the centers of both ends of the reinforcement body, and a power line insertion hole 10a is formed on the outer periphery of the synthetic water support cylinder opposite from the side where the connection section 12 is arranged, The openings at both ends of the synthetic water support cylinder 10 are made of metal discs, and a rotary shaft insertion hole 16a is formed in the center, the outer diameter is larger than the outer diameter of the synthetic water support cylinder, and the inner surface contacts the openings at both ends of the synthetic water support cylinder. By attaching a female screw hole 15 formed in the reinforcement body of the sieve and a metal disc 16 having a connection hole 16b formed at the facing position, a fastening bolt (15) from the connection hole 16b to the female screw hole 15 of the reinforcement body ( By screwing 17), a rotating cylinder (1) that connects the synthetic water support cylinder (10) and the metal disk (16)

The rotation shaft 25 of the stand 2 is passed through the rotation shaft 25 of the stand 2 through the rotation shaft insertion holes 16a of the metal discs on both sides of the rotation cylinder 1, and a separation preventing nut ( The rotating cylinder (1) in which the rotating cylinder (1) is supported by the stand by screwing in 25b) and attaching the protective cap (25c) to the outside of the threaded portion,

Insulation sheet 18 is attached to the inner surface of the metal disk on one side of the rotating cylinder 1, and the body of the non-grounded leakage protection device 3 is placed on the surface of the insulating sheet, and the cover is fixed on the surface of the leakage protection device from the opposite side of the insulation sheet. The protruding end of the fixing bolt (18a) attached to the metal disc by covering (18b) is inserted into the fastening hole (18c) of the fixing cover (18b) and fixed with a coupling nut (18d), and the fixing cover (18b) is attached to the metal surface. It is composed by coating a synthetic resin, and an earth leakage circuit breaker (4) and a power outlet (5) are attached to the inner surface of the metal disk on the opposite side, and the operation switch (4a) of the earth leakage circuit breaker (4) is exposed to the outside through the metal disk. A protective cover (4d) is installed, and the power outlet (5) attaches the plug insertion groove (5a) to the outside of the metal disk, and the inner end (6a) of the power line (6) connected to the power supply unit is connected to the synthetic water support container. The sieve 10 is inserted into the synthetic water support cylinder through the power line insertion hole 10a of the main wall, is connected to the input terminal 4b of the earth leakage breaker, and is separated from the outer surface of the power line connected to the input terminal of the earth leakage breaker ( 6c) is installed so that the inner end of the power line is not separated from the synthetic water support cylinder to the outside, and the output side terminal (4c) of the earth leakage breaker is connected to the power outlet (5) through the connection terminal of the non-grounded leakage protection device (3). It is a device that connects the ground wire of the power line to the ground terminal (5b) of the power outlet and the phase voltage connection terminal of the non-grounded short circuit prevention device (3).

1: rotating cylinder 2: stand
3: non-grounding type leakage protection device 4: earth leakage breaker
4a: operation switch 4b: input terminal
4c: output terminal 4d: protective cover
5: Power outlet 5a: Plug insertion groove
5b: ground terminal 6: power line
6a: inner end 6b: ground wire
6c: jam prevention hole 10: synthetic water support cylinder
10a: power line insertion hole 11: center pipe
12: connection 14: reinforcement
15: female screw hole 16: metal original plate
16a: rotation shaft insertion hole 16b: connection hole
17: fastening bolt 18: insulation sheet
18a: fixing bolt 18b: fixing cover
18c: fastening hole 18d: coupling nut
20,21: support angle 20a,21a: upward bend
23: handle 24: connecting plate
25: rotary shaft 25a: male thread
25b: separation prevention nut 25c: protection cap

Claims (1)

A rotating cylinder (1) is installed on the rotating shaft (25) of the stand (2), and a power cord (6) is wound on the outer surface of the rotating cylinder, and a leakage breaker (4) and a power supply are provided on a metal disk (16) on one side of the rotating cylinder. In equipping the outlet (5),
The rotating cylinder (1) is coupled with a fastening bolt (17) by arranging the metal discs 16 at both ends of the synthetic water support cylinder 10, but the synthetic water support cylinder 10 is inserted into a rotating shaft drilled in the center of the metal disc 16 The outer end of the radial connector is connected in parallel by radially connecting 3 to 5 connections (12) between the outer circumferential surface of the central pipe 11 disposed in the center facing the hole 16a and the inner circumferential surface of the synthetic water support cylinder to connect the outer end of the radial connector The fastening bolts 17 are screwed into the reinforcing body 14 formed in the longitudinal direction on the inner surface of the reinforcing body, forming female threaded holes 15 at both ends of the reinforcing body, and inserted into the connection holes 16b of the metal disc 16 Combined and assembled,
An insulation sheet (18) is attached to the inner side of the metal disc on the opposite side where the power outlet (5) is installed, and a non-grounded short circuit prevention device (3) is placed, and fastened to both sides of the surface of the non-grounded leakage prevention device (3). It has a hole (18c) and a fixing cover (18b) made by coating a synthetic resin on the metal surface, and the fixing bolt (18a) protruding from the metal disk is inserted into the fixing hole (18c) of the fixing cover (18b), and the coupling nut (18d) By making it possible to fasten with the synthetic water support cylinder, the earth leakage circuit breaker 4, the power outlet 5, and the non-grounding type leakage prevention device 3 are accommodated, and the power supplied to the power line is supplied to the electric leakage circuit breaker ( In 4), the ground terminal (5b) of the power outlet (5) and the ground wire (6b) of the power line (6) are supplied to the power outlet (5) through a non-grounded short-circuit prevention device (3). In case of immersion so that the inner end of the power is not separated from the synthetic water support cylinder by connecting it to the phase voltage connection terminal of the device and installing a separation prevention port (6c) on the outer surface of the power line inserted through the power line insertion hole (10a) of the synthetic water support cylinder A mobile electric wire reel equipped with an electric leakage protection device.

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