KR101161538B1 - Device detecting voltage and current, and manufacturing method - Google Patents

Abstract

PURPOSE: A voltage and current detection device and a manufacturing method thereof are provided to prevent malfunction and damage by preventing water from flowing into upper and lower assemblies using a lower case. CONSTITUTION: A voltage and current detection device(P) is composed of an upper assembly(1) and a lower assembly(2). An upper hinge is formed on one side of the upper assembly. A lower hinge corresponding to the upper hinge is formed on the top of one side of the lower assembly. Coupling holes are formed at the centers of the upper and lower hinges. When the upper and lower assemblies are coupled to each other, the coupling holes are coaxially aligned. A rotary shaft(4) is inserted into the coupling holes so that the upper and lower assemblies can be rotated around the rotary shaft.

Description

Device for detecting voltage and current and its manufacturing method

The present invention relates to a voltage and current detection device attached to the secondary output cable of the pole transformer installed in the pole and applied to a system for detecting the voltage and current of the cable in real time to monitor the operation state of the transformer and a method of manufacturing the same. More specifically, voltage and current detection to prevent rain from penetrating the inside and absorb shocks or vibrations so that external shocks or cable vibrations do not transfer to the internal parts, thus maintaining the performance of the device stably even for many years of operation. An apparatus and a method of manufacturing the same.

The electricity generated at the power plant goes through several stages to be supplied to the consumer's home or factory. At the extreme end is a columnar transformer. The role of this column transformer is to convert the high voltage electricity transmitted through the transmission line into low voltage electricity that can be used in homes or factories, and one transformer usually supplies electricity to a large number of consumers. In addition, the electricity consumption and time of consumers receiving electricity from a single transformer is inevitably changed depending on the circumstances of each consumer. This means that the load that the transformer must handle is always forced to change, which means that there is always a probability that an accident such as a burnout or explosion of the transformer due to an overload will occur. Once a transformer breaks down, consumers who receive electricity from the transformer are incapable of receiving electricity until the repair is completed, and in industrial facilities, such as economic losses due to production stoppage. Cause damage.

To remedy this systemic problem, the transformer wireless monitoring system technology, which monitors the load condition of the transformer in real time and sends an alarm to the control center in case of overload, takes immediate action and prevents power failure due to overheating of the transformer. It has been developed and piloted in some industrial areas. The components constituting the distal end of the components of the transformer radio monitoring system are voltage and current detection devices.

A general voltage and current detection device is composed of an upper assembly and a lower assembly, which are hinged, and open and close about the hinge. The upper assembly, on the other hand, comprises an upper case, an upper core, a damper and an upper cover. In addition, the lower assembly includes a lower case, a lower core assembly, an output line, a voltage detecting pin assembly, a lower cover, and a locking member, wherein the lower core assembly is configured by assembling the bobbin to the lower core and winding the coil over the bobbin. The voltage detecting pin assembly is composed of a detection pin and a handle.

The conventional voltage and current detection device having such a configuration has the following problems.

First, the components forming the upper and lower assemblies are made of a hard material, so that rainwater may penetrate between the upper and lower assemblies, and the upper and lower cores have upper and lower assemblies. Should be exposed to the surface of each assembly because the surface contact should be made in close contact with each other, the above-mentioned rainwater enters into the lower case through the interface between the core and the through hole through which the upper and lower cores pass. It is caused by a breakdown by meeting the energizing parts of the battery.

Second, the voltage and current detection device is used in combination with the cable, the cable is exposed to large and small vibrations due to the wind, etc. When the vibration is applied to the voltage and current detection device over a long period of time, the coupling between components is loose This is a problem that causes disconnection or short circuit between internal components.

Third, in the voltage detection pin assembly, the detection pin has a pointed end, a handle is attached to the other end, and a male thread is formed on the outer peripheral surface of the cylindrical body. On the other hand, a connection terminal with a female thread corresponding to the male thread is built in the lower case. When the detection pin is coupled to the female threaded portion of the connection terminal and the handle is turned, the detection pin passes through the connection terminal section and comes out to the cable insertion groove formed in the center of the lower assembly. If the handle continues to rotate, it meets the insulation sheathing surface of the cable passing through the cable insertion groove, and at this point, the force is rotated further, the pointed end of the detection pin penetrates the insulation sheath of the cable and directly with the core wire. It is supposed to reach. In this configuration, the handle is made of a synthetic resin material having an insulating property, it is common to be integrally molded to one end of the detection pin, the handle of the integral molding method can not only rely mainly on the finger force, but also the structural diameter of the handle There is a problem that more fastening force is required to pierce the insulation coating because it can not be enlarged.

The present invention has been conceived to improve the problems of the conventional voltage and current detection device described above, in which rainwater does not penetrate into the product, and internal components are fixed or fixed by vibration continuously applied to the product for a long time. SUMMARY OF THE INVENTION An object of the present invention is to provide a voltage and current detection device having a structure that prevents a coupled portion from loosening or leaving its position and a method of manufacturing the same.

It is still another object of the present invention to facilitate the rotation of the detection pin in the voltage detection pin assembly so that the detection pin can penetrate the insulating sheath of the cable with a small force, thereby improving the work efficiency of the voltage and current detection device and its manufacture It is to provide a method.

Voltage and current detection device according to a preferred embodiment of the present invention for achieving the above object is composed of an upper assembly and a lower assembly, they are hinged, it is to be opened and closed around the hinge.

Meanwhile, the upper assembly includes an upper case, an upper core, a buffer member, and an upper cover.

The lower assembly also includes a lower case, a bracket assembly, a voltage detection pin assembly, and a locking member. The bracket assembly comprises a bracket, a lower core assembly connection terminal, and an output cable, and again the lower core assembly is configured by assembling a bobbin to a lower core and winding a coil over the bobbin.

In addition, the lower hinge, the locking member hinge and the bracket provided with the cable support jaw integrally provided with means for fixing the lower core assembly, the connection terminal and the output line, the output line is composed of a three-core cable, One wire is tied to the connecting terminal, and the other two wires are each electrically coupled to both ends of the coil. The bracket assembly is made by assembling the components to the bracket and completing the connection of the three wires of the output cable.

Then, the assembled bracket assembly is put into a predetermined mold and the lower case is molded of soft PVC or rubber. The lower case made of such an insert molding method fills the empty space therein with the molding material forming the outline of the lower assembly.

The voltage detection pin assembly includes a detection pin, a handle, an arm, and a screw, and a detection pin is firmly coupled to one end of the arm by an integral molding method, and the other end is provided with a guide shaft and a handle on the guide shaft. Is rotatably coupled.

According to the present invention, when the upper assembly and the lower assembly are in close contact with each other by molding the material of the lower case into a flexible material, the lower case functions as a sealing member so that moisture such as rainwater penetrates into the interior of the energized part. There is an effect to prevent damage and failure by electric power.

In addition, by applying the insert molding method in molding the lower case, the lower case molding material is automatically filled in the empty space therein, thereby preventing the coupling state of the internal parts from loosening due to vibration for a long time, thereby preventing failure. have.

In addition, instead of directly fixing the handle of the detection pin to the detection pin, an arm is added to fix the detection pin to one end of the arm, and then the handle is assembled to the other end to be rotatable so that the detection pin can be drilled to drill the insulation coating of the cable. It is effective to improve the convenience of installation work by allowing the wrist or shoulder muscles to be used without resorting to the small muscle movement of the finger when rotating.

1 is a perspective view in a closed state of the voltage and current detection device according to an embodiment of the present invention.
2 is a perspective view of an open state of the voltage and current detection device according to an embodiment of the present invention.
3 is a perspective view of an upper assembly according to an embodiment of the present invention.
4 is a perspective view of a lower assembly according to an embodiment of the present invention.
5 is an assembled cross-sectional view of the voltage and current detection device according to an embodiment of the present invention.
6 is a cross-sectional view of the upper assembly according to an embodiment of the present invention.
7 is a cross-sectional view of a lower assembly according to an embodiment of the present invention.
8 is a perspective view of a bracket assembly according to an embodiment of the present invention.
9 is a perspective view showing the upper and lower structures of the bracket according to an embodiment of the present invention.
10 is a perspective view of a lower core assembly according to an embodiment of the present invention.
Figure 11 is a bobbin assembly perspective view showing a coupling state of the lower core and the bobbin according to an embodiment of the present invention.
12 is a perspective view of a voltage detecting pin assembly according to an embodiment of the present invention.
13 is a cross-sectional view of the voltage detection pin assembly according to an embodiment of the present invention.
14 is a perspective view of a connection terminal according to an embodiment of the present invention.
FIG. 15 is a perspective view of a rear portion of a bracket assembly illustrating a coupling state of a connection terminal and a voltage detecting pin assembly according to an exemplary embodiment.
16 is a perspective view of a bottom portion of an upper cover for showing the position and configuration of the first and second projections according to an embodiment of the present invention.
17 is a partial perspective view of a voltage and current detection device for showing the configuration of the upper coupling surface and the lower coupling surface according to an embodiment of the present invention.
18 is a manufacturing flowchart illustrating a manufacturing method of a voltage and current detection device according to an embodiment of the present invention.

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

1 to 4, the external configuration of the voltage and current detection device P according to an exemplary embodiment of the present invention will be described. The voltage and current detection device P according to the present invention is an upper assembly 1. And the lower assembly 2.

Meanwhile, an upper hinge 121 is provided at one side of the upper assembly 1, and a lower hinge 224 is provided at an upper portion of one side of the lower assembly 2. Coupling holes are provided at the center of the upper hinge 121 and the lower hinge 224, and these coupling balls are aligned on a coaxial line when the upper assembly 1 and the lower assembly 2 are normally combined, and rotated to these coupling holes. By injecting the shaft 4, the upper assembly 1 and the lower assembly 2 are hinged to be rotatable about the pivot shaft 4 as a center axis.

In addition, the locking jaw 122 is provided at the other side of the upper assembly 1, and the locking member 28 is assembled at one side of the lower assembly 2. Preferably, the locking member 28 includes a clasp 281 processed from a metallic material having elasticity, and the voltage and current of the present invention are provided by elastically coupling the clasp 281 to the catching jaw 122. After the detection device P is installed to be coupled to the cable, it serves to closely connect the upper assembly 1 and the lower assembly 2.

5 to 7 are assembled cross-sectional views of the voltage and current detection device P according to an embodiment of the present invention. In order to clarify the contents of the present invention, a general 2D cross section is shown in FIG. 5 and FIGS. 6 and FIG. In FIG. 7, cross-sectional views of the upper assembly 1 and the lower assembly 2 are three-dimensionally and color-coded by components. Detailed configuration will be described with reference to this.

The upper assembly 1 includes an upper case 12, an upper core 11, a buffer member 14, and an upper cover 13, and the lower assembly 2 includes a lower case 21 and a bracket assembly ( B), voltage detection pin assembly 3, and locking member 28.

The upper case 12 is formed of a rigid plastic, and the locking jaw () and the upper hinge 121 are integrally formed. In addition, a buffer member 14 is inserted into the upper part of the upper case 12, and the U-shaped upper core 11 is assembled thereunder, and the upper cover 13 is assembled thereunder. On the other hand, the upper cover 13 is provided with core through holes 133 and 133 'to correspond to the leg positions of the U-shaped upper core 11, and the lower surface of the upper cover 13 has the core through holes 133 and 133'. The first protrusions 131, 131 ′ and the second protrusions 132, 132 ′ surrounding the periphery of the upper cover 13 are integrally provided.

On the other hand, the upper core 11 is exposed to the outside through the core through holes (133, 133 '), the exposure height is preferably 0.5mm to 2mm, the size of the through holes (133, 133') is the upper core ( It is preferable to consider that the upper core 11 can flow up and down and left and right by the buffer member 14 by making it larger than the cross-sectional area of 11). Through this configuration, when the upper core 11 engages with the lower core 24 to be described later, the engagement position and angle of the upper core 11 are assembled to the assembled state of the lower core 24 so that surface contact between the coupling surfaces is smooth. To make corrections accordingly.

In addition, the upper core 11 is formed by punching and stacking a 0.2 mm to 0.3 mm silicon steel sheet in a U-shape, and applying a coating agent containing a silver component having corrosion resistance without deteriorating investment characteristics in order to secure corrosion resistance. It is preferable.

8 to 11 are perspective views illustrating the detailed structure and the coupling state of the elements constituting the bracket assembly (B) according to an embodiment of the present invention. With reference to these, the technical composition of the bracket assembly B is demonstrated.

The bracket assembly B comprises a lower core assembly C, a connection terminal 23, an output line 27, and a bracket 22 to which they are mounted. The bracket 22 is formed of rigid plastic, and as a fixing means for fixing the components, the locking jaw 221 for the lower core assembly C, the guide groove 222 for the connecting terminal 23, and the output line 27 ) Is provided with a mounting groove 223, in addition, the lower hinge 224, the locking member hinge 225 and the cable support jaw 226 is provided integrally formed with the bracket (22). The output line 27 is composed of a three-core cable, one wire is connected to the connecting terminal 23, the other two wires are electrically coupled to both ends of the coil 26, respectively.

The bracket assembly B is made by assembling the components to the bracket 22 and completing the connection work of the three cores of the output line 27.

On the other hand, the lower core assembly (C) is configured by assembling the bobbin 25 to the lower core 24 and wound the coil 26 on the bobbin 25. Like the upper core 11, the lower core 24 is formed by laminating a 0.2 mm to 0.3 mm silicon steel sheet in a U-shape to form a silver component having corrosion resistance without deteriorating investment characteristics in order to secure corrosion resistance. It is preferable to apply | coat with the coating agent which contained.

In addition. The bobbin 25 is coupled to the U-shaped lower core 24, and the joining method is to form the bobbin 25 into two pieces of plastic parts, respectively, and then join one to the bobbin 25 and then the other. Although a method of covering the top is applicable, a more preferable method may be a method of integrating the bobbin 25 and the lower core 24 by insert molding the lower core 24 into the mold and insert molding. After the bonding of the bobbin 25 is completed, the assembly of the lower core assembly C is completed by winding the copper wire coated with insulating material by the number of turns designated by the use using a winding machine. It is preferable to make heat resistance grade H or more. This causes the hot melt resin to fill the empty space of the bracket assembly B when molding the lower case 21 to be described later with the bracket assembly B inserted into the mold. This is because the insulation properties can be destroyed or damaged.

12 to 15 are perspective views illustrating the detailed structure and the coupling state of the elements constituting the voltage detection pin assembly 3 according to an embodiment of the present invention. With reference to these, the technical components of the voltage detecting pin assembly 3 will be described. The voltage detection pin assembly 3 comprises a detection pin 31, a handle 34, an arm 32 and a screw 33. The detection pin 31 is divided into three parts, the head part 312, the body 311 and the root part 314, the head part 312 is a part that is coupled to the arm 32, once coupled to the arm When finished, it is preferable that the cross-sectional shape is not circular so as not to cause idling. In addition, a male thread is provided on the outer circumferential surface of the body 311 so that the male thread is configured to move forward or backward along the first screw hole 231 of the connection terminal 23 described above. Finally, the root portion 314 is preferably made into a needle point toward the end so as to easily penetrate the insulation coating of the cable. Meanwhile, the head 312 of the detection pin 31 is firmly coupled to one end of the arm 32 through an integral molding method, and the guide shaft 321 is connected to the other end of the arm 32. Is provided and the handle 34 is rotatably coupled to the guide shaft 321. Specifically, the depth H1 of the shaft guide groove 341 should be smaller than the height H2 of the guide shaft 321, and the diameter D1 of the shaft guide groove 341 is the diameter of the guide shaft 321. D2) should be larger than that. Also, the center of the guide shaft 321 is provided with a screw fastening hole, and when the handle 34 is assembled and the screw 33 is fastened thereon, the handle 34 is guide shaft 34. Or the screw 33 is placed in a state capable of smooth rotation with the guide shaft 321 as the center axis with little frictional resistance. The diameter D3 of the screw head must be larger than the diameter D1 of the axial guide groove 341 to prevent detachment of the handle 34. Through this configuration, the detection pin 31 can be used to drill the insulating sheath of the cable. ) By using the wrist or shoulder muscles rather than relying on the movement of the small muscles of the fingers can improve the convenience of installation work.

16 and 17 are bottom perspective views of the upper cover 13 and the voltage and current in the state where the upper assembly 1 is open, showing the waterproof principle of the voltage and current detection device P according to an embodiment of the present invention. It is a perspective view of the detection apparatus P. As described above, a soft PVC or rubber having ductility is used as the material of the lower case 21 forming the outer part of the lower assembly 2, and the properties of the material are tight when combined with other rigid bodies. It has a function as a member. In this manner, when the upper coupling surfaces 134 and 134 'and the lower coupling surfaces 211 and 211' of the lower assembly 2 are closely coupled, rainwater or the like may not be penetrated into the interior. However, in the present invention, the first projections 131 and 131 'and the second projections 132 and 132' are further provided to completely surround the core throughholes 133 and 133 'to prevent water penetration. . Through this configuration, the triple waterproof structure was realized.

18 is a manufacturing flowchart illustrating a method of manufacturing the voltage and current detection device P according to an embodiment of the present invention.

In the first step S1, the bobbin 25 is coupled to the lower core 24. Coupling method of the bobbin is a method of forming the bobbin 25 each of the two pieces of plastic material, and then joining one to the bobbin 25, and then superimposed the other on it, but more preferred method The method of inserting the lower core 24 into the mold and then insert molding to integrate the bobbin 25 and the lower core 24 may be applied.

In the second step S2, the coil is wound around the bobbin 25 by a predetermined number of turns to complete the lower core assembly C.

In the third step S3, the lower core assembly C is inserted into a predetermined position of the bracket 22 to assemble the clasp so that the lower core assembly C is firmly fixed.

In the fourth step S4, the output line 27 is assembled by inserting the bushing 271 of the output line 27 into the output line seating groove 223. Then, the connecting terminal 23 is inserted into the guide groove 222 and then fastened with screws to fix it.

In the fifth step S5, one line of the three-core output line 27 is coupled to the connection terminal 23, and the other two wires are electrically connected to both ends of the coil 26 of the lower core assembly C. Combine to make. As the electrical binding method, a soldering method may be used, or a mechanical connector may be used. Finally, the production of the bracket assembly B is completed by neatly arranging using a tape or the like so that the output line 27 core wire and the coil 26 do not protrude.

In the sixth step S6, the bracket assembly B is put in a predetermined mold, and then the lower case 21 is molded of soft PVC or rubber. The lower case 21 made by such an insert molding method fills the empty space therein with the molding material forming the outline of the lower assembly 2. However, it is important that the molding material is not filled in the lower hinge 224, the locking member hinge 225, and the cable support jaw 226 integrally provided in the bracket 22. This is because these elements are elements that are exposed to the outer surface of the lower assembly 2 and are components that require functional rigidity.

In the seventh step S7, the detection pin 31 of the voltage detecting pin assembly 3 manufactured by the assembling method described in the above description is moved to the first screw hole 231 of the connection terminal 23 of the lower assembly 2. The lower assembly 2 and the voltage detecting pin assembly 3 by engaging with the handle 34 and then rotating, and then the known locking member 28 is assembled to the locking member hinge 225. Complete 2).

In the eighth step S8, the upper hinge 121 of the upper assembly 1 manufactured by a known assembly method is fitted between the lower hinges 224 of the lower assembly 2, and then the pivot shaft is fitted to the upper assembly ( 1) and the lower assembly (2).

As described above, it has been described with reference to a preferred embodiment of the present invention, but those skilled in the art various modifications and changes to the present invention without departing from the spirit and scope of the present invention described in the claims Of course you can.

P: voltage and current detection device
1: upper assembly
11: upper core
12: upper case
121: upper hinge 122: locking jaw
13: top cover
131: first projection 132: second projection
133: core through hole 134: upper coupling surface
14: buffer member
2: subassembly
21: lower case
211: lower mating surface 212: cable passage groove
213: connection terminal housing
B: bracket assembly
22: bracket
221: Jam Jaw 222: Guide Home
223: output line seating groove 224: lower hinge
225: hinge locking member 226: cable support jaw
23: connection terminal
231: first screw hole 232: second screw hole
233: third screw hole
C: lower core assembly
24: lower core
25: bobbin
26: coil
27: output line
28: locking member
281 latch
3: voltage detection pin assembly
31: detection pin
311: torso 312: head
314: root
32: cancer
321: guide shaft 322: fastening ball
34: handle
341: Shaft guide groove
4: rotating shaft

Claims (4)

An upper assembly comprising an upper case, an upper core, a buffer member and an upper cover;
A lower assembly comprising a lower case, a bracket assembly, a voltage detecting pin assembly, and a locking member;
In the voltage and current detection device comprising a; rotating shaft for hinge coupling the upper assembly and the lower assembly,
The bracket assembly may include a bracket formed of rigid plastic and integrally formed with a lower hinge, a locking member hinge, and a cable support; A lower core assembly comprising a lower core, a bobbin and a coil; An output line including three cores; And the connection terminal; is firmly fixed, one of the three wires of the output line is bound to the connection terminal and the other two wires are each configured to be electrically coupled to both ends of the coil,
The lower case is a voltage and current detection device characterized in that the bracket assembly is inserted into the mold and formed by integral molding with a flexible material
The method of claim 1,
Voltage and current detection device, characterized in that the material of the lower case is soft PVC or rubber
The method of claim 1,
The voltage detection pin assembly includes a detection pin, a handle, an arm, a screw, and a washer, and a detection pin is firmly coupled to one end of the arm by an integral molding method, and the other end is provided with a guide shaft and a guide shaft. Voltage and current detection device characterized in that the handle is rotatably coupled
The method of claim 1,
In forming the lower case integrally with the bracket assembly, the lower hinge, the locking member hinge, and the cable support jaw, which are integrally provided with the bracket, are molded to protrude out of the lower case.

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