KR20080043117A - Structure of transformer for neon tube - Google Patents

Abstract

A structure of a transformer for a neon tube is provided to reduce a size and facilitate assembly by collectively manufacturing a square secondary winding case. A structure of a transformer for a neon tube includes a case(125), a transformer(107), and a cover(100). The case is injection-molded with plastic for two fixing grooves(126) and two fixing ribs(127) to be integrally formed. The transformer includes a steel core(117), a secondary winding case(113), secondary windings, covers(114a,114b), a rectangular primary winding case(109), a voltage stabilizing condenser(119), a primary winding(109a), and primary winding leads(111). The steel core is mounted inside the case. The secondary winding case includes fixing units(113b) connected to a secondary winding outgoing line(115) for connection the secondary windings to the neon tube. The secondary windings are wound around bobbins mounted inside the secondary winding case. The primary winding is wound around a center of the primary winding case which is installed on an upper part of the secondary winding case. The voltage stabilizing condenser is connected to the primary winding in parallel. The primary winding leads are connected to the primary winding to connect to a power source. The cover includes a cover body(100a), a primary winding outlet(103), a secondary windings outlet(105), and a knob(101).

Description

Transformer structure for four pipes {STRUCTURE OF TRANSFORMER FOR NEON TUBE}

1 is an exploded perspective view of a conventional neon tube transformer.

Figure 2 is a partially assembled perspective view of a state in which an insulating material is charged after inserting a transformer into a case of a conventional neon tube transformer.

Figure 3 is an assembled perspective view of a conventional neon tube transformer.

Figure 4 is an exploded perspective view of the neon tube transformer of the present invention.

5 is an exploded perspective view of the transformer in FIG.

Figure 6 is a partially assembled perspective view of the transformer inserted into the case of the neon tube transformer of the present invention.

7 is a partially assembled perspective view of a state in which an insulating material is charged after the transformer is inserted into a case of the neon tube transformer of the present invention.

8 is an assembled perspective view of the neon tube transformer of the present invention.

Figure 9 is an exploded perspective view of a neon tube transformer of another embodiment of the present invention.

Explanation of symbols on the main parts of the drawings

100: cover 100a: cover body

100b: jam jaw 101: handle

103: primary winding outlet 105: secondary winding outlet

107: transformer 109: primary winding case

109a: primary winding 111: primary winding

113: secondary winding case 113a, 113b: fixed part

114a, 114b: Cover 115: Secondary winding leader line

116a, 116b: Secondary winding 117: Iron core

119: capacitor 125: case

126: fixed groove 127: fixed rib

128: insulation material

The present invention relates to a neon tube transformer structure, and more particularly, neon tube transformer structure used to boost the cast (220V or 110V) to supply high pressure (about 15,000V) to the neon sign used for outdoor advertising, etc. It is about.

In general, outdoor signs using neon tubes require a high voltage power source to discharge the neon tubes. To this end, a neon tube transformer that outputs 220V or 110V to the primary winding is boosted and output to the secondary winding.

Conventional neon tube transformers are shown in Register No. 20-0393372, pre-registered as shown in FIGS.

1 to 3, the neon tube transformer 7 includes a III-type iron core 17, a secondary winding 13 wound on a bobbin and inserted into an intermediate iron core of the iron core 17. The primary winding (9) which is provided at a predetermined distance above the secondary winding (13) and the voltage stabilizing capacitor (19) connected in parallel with the primary winding (9) at the input terminal of the primary winding (9) It is configured to include. The primary winding lead line 11 for connecting to a power source is connected to the primary winding 9, and the secondary winding lead line 15 for connecting to a load (neon tube) is connected to the secondary winding 15. Connected. The primary winding lead line 11 and the secondary winding lead line 15 are connected to the outside through the primary winding outlet 3 and the secondary winding outlet 5 provided in the cover 1.

The case 25 is formed of a metal material to maintain airtightness and has impact resistance, heat resistance, and water resistance.

The cover 1 has a yaw-shaped body 1a recessed inwardly of the case 25 and an upper edge of the body 1a outward while extending the upper edge of the body 25a outward. A wing 1b having a groove 1c into which an upper edge can be inserted, a primary winding lead-out port 3 for guiding the primary winding lead line 11 to the outside, and a secondary winding lead line ( It is composed of a secondary winding outlet 5 which leads 15) to the outside, and a handle 1d which can be gripped during transportation. That is, the feature is to form a groove (1c) for inserting the upper edge of the case 25 in the upper edge of the body (1a) of the cover 1, the cover 1 to the case 25 When assembling the body (1a) of the cover 1 is inserted into the case 25, the groove (1c) is to allow the upper edge of the case 25 can be inserted. By this configuration, the case 25 and the cover 1 are closely coupled to each other to block the penetration of moisture and the like. Another feature is that the height of the primary winding inlet (3) and secondary winding inlet (5) is formed to protrude so as to exceed the height of the cover body (1a) inside the yaw-shaped body (1a) Even when the water is solid, the water does not penetrate into the case through the outlets 5 and 3. In addition, another feature is that the rest of the cover 1, except for the handle (1d), that is, the body (1a), wing (1b), primary winding lead line 11 and secondary winding lead line 15 is By integrally forming by injection molding, the gap between the outer side of the lead lines 11 and 15 and the cover is removed, so that water does not penetrate into the case even when water collects in the main portion of the cover body 1a.

Another feature is that the wood around the transformer 7 inside the case 25 after installing the transformer 7 inside the case 25 but before filling the remaining space inside the case 25 with the insulating material 27. By placing the pieces 21 and 23 to minimize the volume occupied by the remaining space, the filling amount of the insulating material 27 is minimized, and the overall weight is reduced. That is, by placing a piece of wood first in the remaining space in the case 25 to minimize the volume of the remaining space, here the unsaturated polyester (referred to as "homica" in the industry) solution or unsaturated polyester and stone powder ( The mixture of 石粉) is filled with a curing agent to cure.

The completed neon tube transformer is not only closely coupled between the cover 1 and the case 25 to increase the waterproof effect, but also the primary winding outlet 3 and the secondary winding outlet 5 are larger than the height of the cover 1. There is no fear that water accumulated in the main portion of the cover 1 will flow into the case through these outlets 3 and 5.

In the conventional four-tube transformer structure as described above, the secondary winding case is circular in the configuration of the transformer and the center is circularly penetrated and flows when mounted at the center of the iron core and is connected to the secondary winding fixing part of the secondary winding case. There is a concern that the lead wire lead-out line may be short-circuited, and when the transformer is mounted on the case, the secondary winding case is circular, so the case must be made of octagonal metal to insert the case. There was a problem of rising production costs.

In addition, when the secondary winding case is inserted into the secondary winding and the cover is combined, there is a problem that a space between the secondary winding case and the cover is formed on the inner side, and a high pressure film is attached therebetween.

An object of the present invention as invented to solve the above problems is to provide a neon tube transformer that can reduce the weight and size and reduce the manufacturing cost by plastic injection molding the case into a rectangular cylinder.

Another object of the present invention is to provide a neon tube transformer to reduce the manufacturing cost and easy assembly by reducing the size by making the secondary winding case of the transformer in a rectangular cylinder to mount the secondary winding in the upper and lower parts .

Still another object of the present invention is to provide a secondary winding connection fixing part at both corners of the secondary winding case so that the secondary winding lead wire is always connected to a fixed position and fixed.

Another object of the present invention is that the secondary winding case is inserted into the secondary winding and the upper and lower cover is combined, the secondary winding case and the cover is coupled to each other inside, there is no space between the need to attach a high pressure film To provide a transformer for neon tubes.

Still another object of the present invention is to provide a neon tube transformer that can reduce the size of the secondary winding inserted into the secondary winding case to reduce raw materials.

Still another object of the present invention is to bond the bushing to the secondary winding lead wire located inside the case to be fixed, and the secondary winding by the bushing even when pulling the secondary winding lead wire when hardening by filling the insulating material in the case It is to provide a neon tube transformer that can protect the connection part of the secondary winding and the secondary winding lead wire because the lead wire is fixed.

Still another object of the present invention is to provide a neon tube transformer that can prevent the penetration of moisture by maintaining the airtight between the case and the cover.

Still another object of the present invention is to provide a neon tube transformer that can maintain insulation and waterproof functions while reducing manufacturing costs.

Still another object of the present invention is to provide a neon tube transformer that can be safely and easily installed in outdoor signs by reducing the total weight of the neon tube transformer.

The present invention for achieving the above object is a neon tube transformer which is sealed by a cover after installing the transformer inside the case, the fixing groove and the upper and lower fixing ribs are integrated in the upper inside of the rectangular cylinder with the upper opening A plastic injection molded case to be formed of; A secondary winding lead wire for connecting secondary windings to neon tubes at both edges of an iron core having an I shape attached to an E shape mounted inside the case and a rectangular cylinder having a central portion opened to be inserted into an intermediate iron core of the iron core. A secondary winding case having a fixed part connected thereto, a secondary winding wound around a bobbin mounted on the upper and lower inner sides of the secondary winding case, and a cover covering the upper and lower portions of the secondary winding case, respectively, A rectangular primary winding case wound around the center of the primary winding installed at the upper portion of the primary winding case, a voltage stabilizing capacitor connected in parallel with the primary winding at the upper portion of the primary winding case, and a power supply to the primary winding A transformer connected to the primary winding lead wire for connection with the control unit; A rectangular cover body inserted into and fixed to the opened upper part of the case, and a primary winding for drawing the primary winding lead line to the outside at a locking jaw and an upper part fixed to the fixing groove of the case below the cover body. It is characterized by consisting of a cover made of a drawer, a secondary winding drawer for drawing the secondary winding lead-out to the outside, and a handle that can be gripped during transportation.

The present invention is a neon tube transformer which is sealed by a cover after installing the transformer inside the case, the plastic injection molding so that the fixing groove and the upper and lower fixing ribs are integrally formed on the inner upper side of the rectangular cylinder with the upper portion opened. A case; An iron core having an I-shape attached to an E-shape mounted inside the case, a rectangular primary winding case wound around a center of the primary winding so as to be inserted into an intermediate iron core of the iron core, and a lower portion of the primary winding case A voltage stabilizing capacitor connected in parallel with the primary winding, a primary winding lead wire for connecting to a power source, and two corners of the rectangular cylinder installed in the upper portion of the primary winding case and opened at the center of the primary winding. A secondary winding case having a fixed portion connecting the secondary winding lead wire for connecting the primary winding to the neon tube, a secondary winding wound on a bobbin mounted on the upper and lower inner sides of the secondary winding case, and the secondary winding A transformer provided with a cover covering upper and lower portions of the case, respectively; A rectangular cover body inserted into and fixed to the opened upper part of the case, and a primary winding for drawing the primary winding lead line to the outside at a locking jaw and an upper part fixed to the fixing groove of the case below the cover body. It is characterized by consisting of a cover made of a drawer, a secondary winding drawer for drawing the secondary winding lead-out to the outside, and a handle that can be gripped during transportation.

The case may be made of plastic injection molding or metal in a rectangular cylinder.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

Figure 4 is an exploded perspective view of the neon tube transformer of the present invention, Figure 5 is an exploded perspective view of the transformer in Figure 4, Figure 6 is a partially assembled perspective view of the transformer inserted into the case of the neon tube transformer of the present invention. 7 is a partially assembled perspective view of a state in which an insulating material is charged after a transformer is inserted into a case of the neon tube transformer of the present invention, and FIG. 8 is an assembled perspective view of the neon tube transformer of the present invention. And, Figure 9 is an exploded perspective view of the neon tube transformer of another embodiment of the present invention.

In an embodiment of the present invention as described above in detail with reference to Figures 4 to 8, in the neon tube transformer for sealing by the cover 100 after mounting the transformer 107 in the case 125, The case 125 is formed with a fixing groove 126 and a fixing rib 127 integrally formed on the upper and lower sides of the front surface of the rectangular cylindrical body in which the plastic injection-molded upper part is opened.

The transformer 107 mounted inside the case 125 has an iron core 117 to which an I-shape is attached to an E-shape, and both edge portions of a rectangular cylinder having a central portion opened to be inserted into an intermediate iron core of the iron core 117. A secondary winding case 113 having a fixing portion 113a and 113b connecting the secondary windings 115 to connect the secondary windings 116a and 116b to the neon tube, and the secondary winding case ( 113) secondary windings 116a and 116b wound on bobbins mounted on upper and lower inner sides, coverings 114a and 114b respectively covering upper and lower portions of the secondary winding case 113, and the secondary windings; A rectangular primary winding case 109 wound around the center of the primary winding 109a provided at the upper portion of the case 113, and parallel to the primary winding 109a on the upper portion of the primary winding case 109. The voltage stabilizing capacitor 109 and the primary winding 109a are connected to the primary winding lead line 111 for connection with a power source.

The cover 100 inserted into and fixed to the opened upper portion of the case 125 includes a plastic injection molded rectangular cover body 100a and a fixing groove of the case 125 at a lower side of the cover body 100a. 126, the locking jaw (100b) is inserted into and fixed to the upper, the primary winding lead-out port 103 for drawing the primary winding lead-out 111 to the outside, and the secondary winding lead-out 115 outside The secondary winding withdrawal 105 to be drawn out, and the handle 101 that can be gripped when transporting is combined.

The secondary winding case 113 penetrates the center formed with a guide cylinder 113c for guiding the secondary winding when the secondary winding is projected upward and downward in an inner central portion formed by a plastic injection molded rectangular cylinder. The cover 114a coupled to the upper portion of the secondary winding case 113 is protruded into an inner central portion with a rectangular cylinder and penetrates a center formed with a guide rib 114c for guiding the secondary winding 116a. The cover 114b coupled to the lower portion of the winding case 113 is a rectangular cylinder that penetrates the inner central portion and has a center formed therein with a guide rib 114d for guiding the secondary winding 116b.

The fixing ribs 127 formed on the upper and lower portions of the front surface of the case 125 have a rectangular hole through which the center bulges toward the front side penetrates in the vertical direction.

The inner fixing groove 126 of the case 125 is formed at the front, rear left and right, respectively, and the locking jaw 100b formed at the lower side of the cover body 100a of the cover 100 is at the front, rear left and right. When the cover 100 is formed in the case 125, the locking jaws 100b are inserted into the fixing grooves 126, respectively, so that the cover 100 is mounted in the case 125 to be hermetically fixed. Will be.

After the transformer 107 is mounted inside the case 125, the insulating material 128 made of a mixture of stone powder and unsaturated polyester (in the industry called Homaka) and a curing agent is filled and cured in the inner space. .

The filling of the remaining space inside the case 125 accommodating the transformer 107 with the insulating material 128 may include electrical insulation between the case 125 and the transformer 107, prevention of penetration of moisture into the transformer 107, and It is to prevent the disconnection of the leader line.

The secondary winding lead wire 115 positioned inside the case 125 is fixed to be bonded by attaching a bushing 116 to a portion thereof, and the secondary winding lead is drawn out when the insulating material 128 is filled in the case 125. Since the insulating material 128 is attached to the wire 115 and the bushing 116 to pull the secondary winding lead wire 115 from the outside, the secondary winding lead wire 115 is fixed by the bushing 116. It is possible to protect the connecting portion of the secondary winding (116a, 116b) and the secondary winding lead-out line (115).

The case 125 may be manufactured by plastic injection molding or metal in a rectangular cylinder.

In the neon tube transformer of the present invention, after the transformer 107 is mounted inside the case 125, the remaining space inside the case 125 is hermetically treated by the insulating material 128, and the cover 100 is covered and then outdoors. Combined for use. The case 125 and the cover 100 may be tightly coupled to block penetration of moisture and the like.

The neon tube transformer is closely coupled between the cover 100 and the case 125 to increase the waterproof effect, and the primary winding outlet 103 and the secondary winding outlet 105 are higher than the height of the cover 100. There is no fear that water accumulated in the main portion of the 100 flows into the case through these outlets 103 and 105.

9 illustrates another embodiment of the present invention in detail as follows.

The present invention is a neon tube transformer is installed in the case 125, the transformer 107 is sealed by the cover 100, the case 125 is the inner upper side of the rectangular cylinder of the plastic injection-molded upper opening The fixing groove 126 and the fixing rib 127 is formed integrally on the upper, lower side. The case 125 may be manufactured by plastic injection molding or metal in a rectangular cylinder.

The transformer 107 mounted inside the case 125 includes an iron core 117 having an I shape attached to an E shape, and a primary winding 109a wound at the center thereof so as to be inserted into an intermediate iron core of the iron core 117. A rectangular primary winding case 109, a voltage stabilizing capacitor 119 connected in parallel with the primary winding 109a in a lower portion of the primary winding case 109, and a power supply to the primary winding 109a. Primary winding lead lines 111 for connecting to the secondary windings, and secondary windings 116a and 116b installed at an upper portion of the primary winding case 109 and having a central portion thereof open to secondary neon lines 116a and 116b with neon tubes. Wound around the secondary winding case 113 having the fixing portions 113a and 113b to which the secondary winding lead wires 115 are connected, and bobbins respectively mounted on the upper and lower inner sides of the secondary winding case 113. Secondary windings 116a and 116b and coverings 114a and 114b covering upper and lower portions of the secondary winding case 113 are provided.

The cover 100 inserted into and fixed to the opened upper portion of the case 125 includes a plastic injection molded rectangular cover body 100a and a fixing groove of the case 125 at a lower side of the cover body 100a. 126, the locking jaw 100b and the upper portion of which the primary winding lead-out port 103 leading the primary winding lead-out line 111 to the outside and the secondary winding lead-out line 115 are led to the outside. The secondary winding outlet 105 is combined with a handle 101 that can be gripped during transportation.

The secondary winding case 113 is a plastic injection molded rectangular cylinder is projected to the upper and lower portions in the inner center of the partition formed in the center is penetrated through the center formed with a guide rib 113c for guiding the secondary winding is installed. The cover 114a coupled to the upper portion of the secondary winding case 113 may protrude through an inner central portion of the secondary winding case 113 to penetrate a central portion formed with a guide rib 114c for guiding the secondary winding 116a. The cover 114b coupled to the lower portion of the car winding case 113 is formed by penetrating a center formed with a rectangular cylinder, and having a guide rib 114d formed therein to guide the secondary winding 116b.

After the transformer 107 is mounted inside the case 125, the insulating material 128 made of a mixture of powder and an unsaturated polyester and a curing agent is filled and cured in the inner space.

Another embodiment of the present invention is that the primary winding case 109 is installed and combined so as to be located below the secondary winding case 113 in one embodiment, the component functions and configurations of the present invention are the embodiment Same as described in

Meanwhile, in the detailed description of the present invention, specific embodiments have been described, but it will be apparent to those skilled in the art that various modifications are possible without departing from the scope of the present invention.

According to the present invention as described above, the present invention can reduce the weight and size by reducing the plastic injection molding the case into a rectangular cylindrical body and can reduce the production cost. In addition, the secondary winding case of the transformer is made of a rectangular cylinder so that the secondary winding can be mounted on the upper and lower, there is an effect of reducing the manufacturing cost and easy assembly by reducing the size. In addition, since the secondary winding connection fixing parts are formed at both corners of the secondary winding case of the transformer, the secondary winding lead wire is always connected and fixed at a predetermined position to prevent a short circuit. In addition, when the secondary winding case is inserted into the secondary winding and the upper and lower cover are combined, the secondary winding case and the cover are coupled to each other so that no space is formed between the secondary winding cases so that there is no need to attach a high pressure film as in the prior art. It is effective. In addition, since the size of the secondary winding inserted into the secondary winding case can be reduced, there is an effect of reducing raw materials. In addition, since the bushing is fixed to the secondary winding lead wire located inside the case to be attached, and the secondary winding lead wire is fixed by the bushing even when the secondary winding lead wire is pulled out when the case is filled with an insulating material, the secondary winding lead wire is fixed by the bushing. It is effective to protect the connection part of the secondary winding and the secondary winding lead-out. In addition, it is possible to prevent the penetration of moisture by maintaining the airtight between the case and the cover, there is an effect that can maintain the insulation and waterproof function while reducing the manufacturing cost. In addition, there is an effect that can be safely and easily installed in outdoor signage, etc. by reducing the total weight of the four-tube transformer.

Claims (8)

In the neon tube transformer which is sealed by a cover after installing the transformer inside the case, A plastic injection molded case 125 formed so that the fixing grooves 126 and the fixing ribs 127 are integrally formed on the upper and lower sides of the rectangular cylindrical body having an upper opening; An iron core 117 to which an I-shape is attached to an E-shape mounted inside the case 125, and secondary windings on both side edges of a rectangular cylinder whose center portion is opened to be inserted into an intermediate iron core of the iron core 117 Secondary winding case 113 formed with fixing portions 113a and 113b connecting second winding wires 115 for connecting 116a and 116b to the neon tube, and the upper and lower portions of the secondary winding case 113. Of the secondary windings 116a and 116b wound around the bobbins mounted inside the cover, the cover 11a and 114b respectively covering the upper and lower portions of the secondary winding case 113, and the secondary winding case 113. A rectangular primary winding case 109 wound around the center of the primary winding 109a installed at an upper portion thereof, and a voltage stabilizing capacitor connected in parallel with the primary winding 109a on an upper portion of the primary winding case 109. 119 and a transformer 107 to which the primary winding lead line 111 is connected to the primary winding 109a to be connected to a power source; Rectangular cover body 100a inserted into and fixed to the opened upper portion of case 125 and locking jaw 100b fixed to fixing groove 126 of case 125 under the cover body 100a. ) And the upper portion of the primary winding lead-out port 103 for drawing the primary winding lead-out line 111 to the outside, the secondary winding lead out port 105 for drawing the secondary winding lead-out line 115 to the outside; The transformer structure for four pipes, characterized in that made of a cover 100 made of a handle 101 that can be gripped during transportation. The method of claim 1, The secondary winding case 113 penetrates the center formed with a guide cylinder 113c for guiding the secondary winding when the secondary winding is projected upward and downward in an inner central portion formed by a plastic injection molded rectangular cylinder. The cover 114a coupled to the upper portion of the secondary winding case 113 is protruded into an inner central portion with a rectangular cylinder and penetrates a center formed with a guide rib 114c for guiding the secondary winding 116a. Cover cover (114b) coupled to the lower portion of the winding case 113 is a four-tube transformer, characterized in that the center through which the guide rib (114d) is formed to protrude in the inner center with a rectangular tube to guide the secondary winding (116b) rescue. The method of claim 1, The inner fixing groove 126 of the case 125 is formed at the front, rear left and right, respectively, and the locking jaw 100b formed at the lower side of the cover body 100a of the cover 100 is at the front, rear left and right. When the cover 100 is formed in the case 125, the locking jaws 100b are inserted into the fixing grooves 126, respectively, so that the cover 100 is mounted in the case 125 to be hermetically fixed. A transformer structure for a domestic pipe, which is characterized by the above-mentioned. The method of claim 1, Inside the case 125, after mounting the transformer 107, the four-tube transformer structure characterized in that the inner space is filled with the insulating material (128) made of a mixture of stone and unsaturated polyester and a curing agent. The method of claim 4, wherein The secondary winding lead wire 115 positioned inside the case 125 is fixed to be bonded by attaching a bushing 116 to a portion thereof, and the secondary winding lead is drawn out when the insulating material 128 is filled in the case 125. Since the insulating material 128 is attached to the wire 115 and the bushing 116 to pull the secondary winding lead wire 115 from the outside, the secondary winding lead wire 115 is fixed by the bushing 116. The transformer structure for four pipes, characterized in that installed to protect the connecting portion of the secondary winding (116a, 116b) and the secondary winding lead-out line (115). In the neon tube transformer which is sealed by the cover 100 after installing the transformer 107 in the case 125, A plastic injection molded case 125 formed so that the fixing grooves 126 and the fixing ribs 127 are integrally formed on the upper and lower sides of the rectangular cylindrical body having an upper opening; An iron core 117 to which an I-shaped is attached to an E shape mounted inside the case 125, and a rectangular primary winding in which a primary winding 109a is wound around the center to be inserted into an intermediate iron core of the iron core 117. A case 109, a voltage stabilizing capacitor 119 connected in parallel with the primary winding 109a in the lower portion of the primary winding case 109, and one for connecting to a power source in the primary winding 109a. Secondary windings for connecting the secondary windings 116a and 116b to the neon tubes in both corners of the rectangular winding lead-out line 111 and the rectangular cylindrical body which is installed at the upper portion of the primary winding case 109 and has a central opening. Secondary winding case 113 having fixed parts 113a and 113b to which lead wires 115 are connected, and secondary windings 116a wound on bobbins respectively mounted on upper and lower inner sides of the secondary winding case 113. A transformer 107 provided with coverings 114a and 114b covering upper and lower portions of the secondary winding case 113, respectively; Rectangular cover body 100a inserted into and fixed to the opened upper portion of case 125 and locking jaw 100b fixed to fixing groove 126 of case 125 under the cover body 100a. ) And the upper portion of the primary winding lead-out port 103 for drawing the primary winding lead-out line 111 to the outside, the secondary winding lead out port 105 for drawing the secondary winding lead-out line 115 to the outside; The transformer structure for four pipes, characterized in that made of a cover 100 made of a handle 101 that can be gripped during transportation. The method of claim 6, The secondary winding case 113 is a plastic injection molded rectangular cylinder is projected to the upper and lower portions in the inner center of the partition formed in the center is penetrated through the center formed with a guide rib 113c for guiding the secondary winding is installed. The cover 114a coupled to the upper portion of the secondary winding case 113 may protrude through an inner central portion of the secondary winding case 113 to penetrate a central portion formed with a guide rib 114c for guiding the secondary winding 116a. Cover 114b is coupled to the lower portion of the car winding case 113 is a rectangular tube for projecting four inner tube is characterized in that the center is formed through the guide rib 114d for guiding the secondary winding 116b through Transformer structure. The method of claim 6, Inside the case 125, after mounting the transformer 107, the four-tube transformer structure characterized in that the inner space is filled with the insulating material (128) made of a mixture of stone and unsaturated polyester and a curing agent.

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