KR102269876B1 - Terminal block for preventing leakage current with waterproof function - Google Patents

Abstract

The present invention relates to a leakage current limiting connection terminal block having a waterproof function, which is provided with a waterproof case to primarily prevent moisture penetration into the interior due to water leakage or moisture or immersion, so that it is strong against the occurrence of an electric short, and the waterproof case Even if the battery is destroyed, the leakage current limiting function operates to limit the leakage current secondarily to effectively prevent an electric shock accident.

Description

Terminal block for preventing leakage current with waterproof function

The present invention relates to leakage current limiting technology, and more particularly, to a leak current limiting connection terminal block having a waterproof function.

In Republic of Korea Patent Registration No. 10-1984479 (2019.05.27), which was previously applied and registered by the applicant of the present invention, the primary-side phase voltage line (R line), neutral line (N line), and grounding line (G line) of a single-phase three line, 2 A leakage current limiting function that can prevent electric shock by limiting the leakage current using the difference in the area of the conductor electrodes connecting each of the phase voltage line (R line), the neutral line (N line), and the ground line (G line) at both ends A connector for a luminaire equipped with was proposed.

However, this technology has a function to prevent human electric shock by limiting leakage current due to water leakage or moisture or immersion, but does not have a waterproof function to prevent water penetration itself due to leakage or moisture or immersion. Therefore, it could only be vulnerable to the occurrence of an electrical short.

Therefore, the present inventor provides a waterproof case to primarily prevent water leakage or moisture penetration itself due to immersion, and is strong against the occurrence of an electric short, and even if the waterproof case is destroyed, the leakage current limiting function operates and secondarily A study was conducted on the connection terminal block technology of the double safety structure that can effectively prevent electric shock accidents by limiting the leakage current.

Republic of Korea Patent No. 10-1984479 (May 27, 2019)

The present invention has a waterproof case to primarily prevent water leakage or moisture infiltration into the interior due to immersion, so that it is strong against electric short, and even if the waterproof case is destroyed, the leakage current limiting function operates and secondary leakage current An object of the present invention is to provide a leakage current limiting connection terminal block having a waterproof function of a double safety structure that can effectively prevent an electric shock accident by limiting the

According to an aspect of the present invention for achieving the above object, a leakage current limiting connection terminal block having a waterproof function is a primary side phase voltage line (R line), neutral line (N line), ground line (G line) of a single-phase three line. and the secondary side phase voltage line (R line), neutral line (N line), and ground line (G line) are respectively connected at both ends, and an R conductor electrode having a different area, an N conductor electrode, and a G conductor electrode an insulator terminal block mounted therein to limit leakage current by a difference in the area of the conductor electrode; an insulator outer case coupled to surround the insulator terminal block at upper and lower portions; The insulator is coupled to cover the outer case from the upper and lower portions, and includes a waterproof case for preventing moisture from entering the inside.

According to an additional aspect of the present invention, the leakage current limiting connection terminal block having a waterproof function fixedly supports the insulator terminal block and the insulator outer case, and at the same time, the primary side phase voltage line (R line), neutral line (N line), ground line (G line) ) and the secondary side phase voltage line (R line), neutral line (N line), and ground line (G line), respectively, with the R conductor electrode, the N conductor electrode, and the G conductor electrode in close contact with a connection support. include

According to an additional aspect of the present invention, the waterproof case has an insulator outer case housed in the upper part, the primary side phase voltage line (R line), the neutral line (N line), the grounding line (G line), and the secondary side phase voltage line (R line) ), a neutral wire (N wire), and a lower main body in which inlet holes for introducing each of the ground wire (G wire) are formed on two opposite sides, and protruding along the upper periphery to form a step; It is coupled at the upper part of the lower body to seal the lower body, and includes an upper lid in which at least two fastening parts of a folded structure are formed on opposite sides of the lower body, wherein the engaging parts are formed to be fastened by being caught on the steps of the lower body.

According to an additional aspect of the present invention, the waterproof case and the packing rings are respectively inserted into the inlets formed in the lower body; It is combined with each end of the primary side phase voltage line (R line), neutral line (N line), ground line (G line) and secondary side phase voltage line (R line), neutral line (N line), and ground line (G line) for packing. It further includes connectors for packing connected to each of the rings.

According to an additional aspect of the present invention, the waterproof case further includes a central packing member installed between the upper lid and the stepped protruding along the upper periphery of the lower body.

The leakage current limited connection terminal block having a waterproof function according to the present invention is provided with a waterproof case to primarily prevent moisture penetration itself due to water leakage or moisture or immersion, so that it is strong against the occurrence of an electric short, and the waterproof case is destroyed Even if the leakage current limiting function operates, there is an effect that can prevent electric shock accidents more efficiently by having a double safety structure that can prevent electric shock accidents by limiting the leakage current secondary.

1 is a cross-sectional view showing the configuration of an embodiment of a leakage current limited connection terminal block having a waterproof function according to the present invention.
2 is an exploded perspective view showing the configuration of an embodiment of a leakage current limiting connection terminal block having a waterproof function according to the present invention.
3 is a cross-sectional view showing the configuration of an embodiment of the insulator terminal block of the leakage current limited connection terminal block having a waterproof function according to the present invention.
4 is a view showing the configuration of an embodiment of the insulator outer case of the leakage current limited connection terminal block having a waterproof function according to the present invention.
5 is a diagram illustrating the configuration of an embodiment of a waterproof case of a leakage current limiting connection terminal block having a waterproof function according to the present invention.

Hereinafter, the present invention will be described in detail so that those skilled in the art can easily understand and reproduce it through preferred embodiments described with reference to the accompanying drawings. While specific embodiments are illustrated in the drawings and the related detailed description is set forth, they are not intended to limit the various embodiments of the present invention to a specific form.

In describing the present invention, if it is determined that a detailed description of a related well-known function or configuration may unnecessarily obscure the gist of the embodiments of the present invention, the detailed description thereof will be omitted.

When a component is referred to as being “connected” or “connected” to another component, it is understood that the other component may be directly connected or connected to the other component, but other components may exist in between. it should be

On the other hand, when it is mentioned that a certain element is "directly connected" or "directly connected" to another element, it should be understood that the other element does not exist in the middle.

1 is a cross-sectional view showing the configuration of an embodiment of a leakage current limited connection terminal block having a waterproof function according to the present invention, Figure 2 is a configuration of an embodiment of a leakage current limited connection terminal block having a waterproof function according to the present invention It is an exploded perspective view shown. 1 and 2, the leakage current limiting connection terminal block 100 having a waterproof function according to this embodiment has an insulator terminal block 110, an insulator outer case 120, and a waterproof case 130. includes

The insulator terminal block 110 is a single-phase three-line primary side phase voltage line (R line) 200a, a neutral (N line) 200b, a ground line (G line) 200c, and a secondary side phase voltage line (R line) ( 300a), a neutral wire (N wire) 300b, and a ground wire (G wire) 300c are connected at both ends, but an R conductor electrode 111a having a different area, an N conductor electrode 111b, The G-conductor electrode 111c is mounted therein to limit the leakage current by the difference in the area of the conductor electrode.

Single-phase 3-wire primary side phase voltage line (R line) 200a, neutral (N line) 200b, ground line (G line) 200c, and secondary side phase voltage line (R line) 300a, neutral line (N line) 300b, the ground wire (G line) 300c, respectively, have an R line inlet 113a, an N line inlet 113b, and a G line inlet 113c formed on one side of the insulator terminal block 110 and the other side. It is introduced into the insulator terminal block 110 through the open portion of the .

The R conductor electrode 111a, the G conductor electrode 111c, and the N conductor electrode 111b mounted inside the insulator terminal block 110 are electrically isolated from each other through the insulator barrier rib.

3 is a cross-sectional view showing the configuration of an embodiment of an insulator terminal block of a leakage current limited connection terminal block having a waterproof function according to the present invention. Referring to FIG. 3 , it can be seen that the N conductor electrode 111b has a larger area than the R conductor electrode 111a and the G conductor electrode 111c.

As the area of the N conductor electrode 111b is larger than the area of the R conductor electrode 111a and the area of the G conductor electrode 111c, the leakage current gradually decreases. As the leakage current decreases, the risk of electric shock is small. Therefore, it is possible to provide a leakage current limiting function without worrying about electric shock.

The reason is that, as described in Korean Patent Registration No. 10-1625493 (2016.05.24), compared to the flat-shaped conductor (corresponding to the R conductor electrode of the present invention) connected to the (+) terminal of the power supply (- ), because the larger the area of the flat conductor (corresponding to the N conductor electrode of the present invention) connected to the terminal, the smaller the leakage current.

Meanwhile, in FIG. 3 , the insulator terminal block 110 is shown in a vertically separable form, but the present invention is not limited thereto, and the insulator terminal block 110 may be implemented in a form integrally cast.

The insulator outer case 120 is coupled to surround the insulator terminal block 110 at upper and lower portions. Therefore, since the insulator outer case 120 is an insulator, even if a small amount of leakage current leaks from the insulator terminal block 110 , it does not flow through the insulator outer case 120 .

4 is a view showing the configuration of an embodiment of the insulator outer case of the leakage current limiting connection terminal block having a waterproof function according to the present invention. In FIG. 4 , the insulator outer case 120 is shown in a vertically separable form, but the present invention is not limited thereto, and the insulator outer case 120 may be integrally cast.

The waterproof case 130 is coupled to surround the insulator outer case 120 from the upper and lower portions, and prevents moisture from entering the inside. For example, the waterproof case 130 may be implemented with a flame-retardant plastic material to prevent water leakage or penetration of moisture into the interior due to moisture or immersion.

By implementing in this way, the leakage current limiting connection terminal block having a waterproof function according to the present invention is provided with a waterproof case to primarily prevent water penetration itself due to water leakage or moisture or immersion, so that it is strong against the occurrence of an electric short. , even if the waterproof case is destroyed, the leakage current limiting function operates to limit the leakage current, thereby preventing electric shock accidents more effectively by having a double safety structure that can prevent electric shock accidents.

Meanwhile, according to an additional aspect of the invention, the leakage current limiting connection terminal block 100 having a waterproof function may further include a connection support 140 . The connection support 140 fixedly supports the insulator terminal block 110 and the insulator outer case 120, and at the same time, the primary side phase voltage line (R line) 200a, the neutral line (N line) 200b, the ground line (G line) ( 200c), the secondary side phase voltage line (R line) 300a, the neutral line (N line) 300b, and the ground line (G line) 300c, respectively, to the R conductor electrode 111a and the N conductor electrode 111b. ) and the G conductor electrode 111c in close contact with each other.

For example, the connection support 140 is implemented to include an insulator substrate 141 and a plurality of connection pins 142 vertically protruding from the bottom of the insulator substrate, and the insulator outer case 120 is formed by the plurality of connection pins 142 . ) is fixedly supported, and the primary side phase voltage line (R line) 200a, the neutral (N line) 200b, the ground line (G line) 200c, and the secondary side phase voltage line ( The R conductor electrode 111a, the N conductor electrode 111b, and the G conductor by applying pressure to each of the R line) 300a, the neutral (N line) 300b, and the grounding line (G line) 300c. It may be implemented to be in close contact with the electrode 111c.

In addition, a plurality of connection grooves 112 are formed on the insulator terminal block 110 so that the plurality of connection pins 142 of the connection support 140 are inserted from the top, and the insulator outer case 120 is connected to the insulator terminal block ( A plurality of passage grooves (not shown) through which a plurality of connection pins 142 of the connection support 140 inserted into the plurality of connection grooves 112 formed on the upper portion of 110 pass may be formed.

The user holds the insulator substrate 141 portion of the connection support 140 by hand, inserts a plurality of connection pins 142 into the plurality of passage grooves formed in the insulator outer case 120, and then puts the hand on the insulator substrate 141 by hand. Press .

Then, the plurality of connection pins 142 of the connection support 140 pass through the plurality of passage grooves formed in the insulator outer case 120 to the plurality of connection grooves 112 formed in the upper portion of the insulator terminal block 110 . inserted and fitted.

Accordingly, a plurality of connection pins 142 of the connection support 140 inserted into the plurality of connection grooves 112 formed in the upper portion of the insulator terminal block 110 are drawn into the insulator terminal block 110, the primary side phase voltage line ( R line) 200a, neutral (N line) 200b, grounding line (G line) 200c, secondary side phase voltage line (R line) 300a, neutral (N line) 300b, grounding line (G) By applying pressure to each of the lines) 300c to bring them into close contact with the R conductor electrode 111a, the N conductor electrode 111b, and the G conductor electrode 111c, an accurate single-phase three-line connection is made.

5 is a diagram showing the configuration of an embodiment of a waterproof case of a leakage current limited connection terminal block having a waterproof function according to the present invention. As shown in FIG. 5 , the waterproof case 130 according to this embodiment includes a lower body 131 and an upper lid 132 .

In the lower body 131, an insulator outer case 120 is accommodated in the upper part, and a primary side phase voltage line (R line) 200a, a neutral line (N line) 200b, a ground line (G line) 200c, and 2 Inlet holes 131a for introducing each of the secondary phase voltage line (R line) 300a, the neutral line (N line) 300b, and the ground line (G line) 300c are formed on two opposite sides, and are formed along the upper periphery It protrudes to form a step 131b.

The upper lid 132 is coupled to the upper part of the lower body 131 to seal the lower body 131 , but a fastening part of a folding structure in which a locking part 132b that is caught by the step 131b of the lower body 131 and is fastened is formed. At least two 132a are formed on opposite sides of each other.

The insulator outer case 120 having the insulator terminal block 110 mounted therein is inserted from the upper part and accommodated in the lower body 131, the lower body 131 covers the upper lid 132 on the upper part, and then the fastening part 132a) Fold down and seal by fastening the locking portion 132b to be caught on the step 131b of the lower body 131 .

By implementing in this way, the present invention is provided with a waterproof case to primarily prevent moisture penetration itself into the interior due to water leakage or moisture or immersion, so that it is strong against the occurrence of an electric short, and even if the waterproof case is destroyed, the leakage current limiting function operates Thus, it is possible to provide a leakage current limiting connection terminal block having a waterproof function of a double safety structure that can prevent an electric shock accident by limiting the secondary leakage current, so that an electric shock accident can be prevented more efficiently.

On the other hand, according to an additional aspect of the invention, the waterproof case 130 may further include rings 133 for packing, and connection ports 134 for packing. The packing rings 133 are respectively inserted into the inlet holes 131a formed in the lower body 131 to prevent moisture from penetrating into the waterproof case 130 through the inlet holes 131a.

The packing connection ports 134 are a primary side phase voltage line (R line) 200a, a neutral line (N line) 200b, a ground line (G line) 200c, and a secondary side phase voltage line (R line) 300a, The neutral wire (N wire) 300b, the ground wire (G wire) 300c is coupled to each end and connected to each of the packing rings 133 , and moisture penetrates into the waterproof case 130 along the single-phase three-line line. prevent doing

Meanwhile, according to an additional aspect of the invention, the waterproof case 130 may further include a central packing member 135 . The middle packing member 135 is installed between the step 131b and the upper lid 132 that protrude along the upper outer periphery of the lower body 131, so that the moisture connects the lower body 131 and the upper lid 132 at the bonding site. Through the waterproof case 130 is prevented from penetrating into the interior.

At this time, the packing ring 133, the packing connector 134, and the central packing member 135 may be made of a rubber material, but is not limited thereto.

Meanwhile, according to an additional aspect of the present invention, the leakage current limited connection terminal block 100 having a waterproof function may further include a metal piece 150 for area expansion. The area expansion metal piece 150 expands the area of the N conductor electrode 111b.

The metal piece 150 for area expansion may be installed on the lower inner side of the insulator outer case 120 , and is in electrical contact with the N-conductor electrode 111b to increase the area of the N-conductor electrode 111b with the metal piece for area expansion 150 . By serving to expand the area, the leakage current is further reduced, and the smaller the leakage current, the smaller the risk of electric shock, so the risk of electric shock is smaller.

As described above, the leakage current limiting connection terminal block having a waterproof function according to the present invention is provided with a waterproof case to primarily prevent water leakage or moisture ingress into the interior due to water immersion, thereby being strong against the occurrence of an electric short. And, even if the waterproof case is destroyed, the leakage current limiting function operates to limit the leakage current, thereby having a double safety structure that can prevent an electric shock accident, thereby preventing an electric shock accident more efficiently.

The various embodiments disclosed in the present specification and drawings are merely presented as specific examples to aid understanding, and are not intended to limit the scope of various embodiments of the present invention.

Accordingly, the scope of various embodiments of the present invention, in addition to the embodiments described herein, all changes or modifications derived based on the technical idea of various embodiments of the present invention are included in the scope of various embodiments of the present invention. should be interpreted as being

The present invention can be industrially used in the field of leakage current limiting technology and its application technology.

100: leakage current limit connection terminal block
110: insulator terminal block
111a: R conductor electrode
111b: N conductor electrode
111c: G conductor electrode
112: access home
113a: R line entry hole
113b: N line entry hole
113c: G line entry hole
120: insulator outer case
130: waterproof case
131: lower body
131a: inlet hole
131b: step
132: upper lid
132a: fastening part
132b: locking part
133: ring for packing
134: connection port for packing
135: middle packing member
140: connection support
141: insulator substrate
142: connection pin
150: metal piece for area expansion
200a, 300a : Phase voltage line (R line)
200b, 300b : Neutral wire (N wire)
200c, 300c : Ground wire (G wire)

Claims (5)

At both ends of the single-phase 3-wire primary side phase voltage line (R line), neutral line (N line), ground line (G line), and the secondary side phase voltage line (R line), neutral line (N line), and ground line (G line) at both ends. an insulator terminal block connecting but having an R conductor electrode, an N conductor electrode, and a G conductor electrode having different areas mounted therein to limit a leakage current by a difference in the area of the conductor electrode;
an insulator outer case coupled to surround the insulator terminal block at upper and lower portions;
Doedoe coupled to cover the outer case of the insulator from the upper and lower parts, a waterproof case preventing moisture from entering the inside;
including,
Waterproof case:
The insulator outer case is housed at the top, and the primary side phase voltage line (R line), neutral line (N line), ground line (G line), and the secondary side phase voltage line (R line), neutral line (N line), ground line (G line) ) Inlet holes for introducing each are formed on two opposite sides, and protruding along the upper outer periphery of the lower body is formed a step;
an upper lid coupled to the upper part of the lower body to seal the lower body, and at least two fastening parts having a folding structure formed with a locking part to be hooked and fastened to the step of the lower body are formed on opposite sides of each other;
Rings for packing that are respectively inserted into the inlet holes formed in the lower body;
It is combined with each end of the primary side phase voltage line (R line), neutral line (N line), ground line (G line) and the secondary side phase voltage line (R line), neutral line (N line), and ground line (G line) for packing. connectors for packing connected to each of the rings;
Leakage current limiting connection terminal block with waterproof function including. The method of claim 1,
Leakage current limiting connection terminal block with waterproof function:
While fixing and supporting the insulator terminal block and the insulator outer case, the primary side phase voltage line (R line), neutral line (N line), grounding line (G line), and secondary side phase voltage line (R line), neutral line (N line), grounding line ( G line) a connection support for connecting the R conductor electrode, the N conductor electrode, and the G conductor electrode in close contact with each other;
Leakage current limited connection terminal block with a waterproof function further comprising. delete delete The method of claim 1,
Waterproof case:
a central packing member installed between the step protruding along the upper periphery of the lower body and the upper lid;
Leakage current limited connection terminal block with a waterproof function further comprising.

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