KR101028421B1 - Underground cable grounding device of low voltage cabling box for apartment house - Google Patents

Underground cable grounding device of low voltage cabling box for apartment house Download PDF

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Publication number
KR101028421B1
KR101028421B1 KR1020110013720A KR20110013720A KR101028421B1 KR 101028421 B1 KR101028421 B1 KR 101028421B1 KR 1020110013720 A KR1020110013720 A KR 1020110013720A KR 20110013720 A KR20110013720 A KR 20110013720A KR 101028421 B1 KR101028421 B1 KR 101028421B1
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South Korea
Prior art keywords
ground
rod
low
ground rod
junction box
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KR1020110013720A
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Korean (ko)
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김재곤
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(주)광명토탈엔지니어링
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    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G13/00—Installations of lightning conductors; Fastening thereof to supporting structure
    • H02G13/40—Connection to earth
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/58—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation characterised by the form or material of the contacting members
    • H01R4/66—Connections with the terrestrial mass, e.g. earth plate, earth pin
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G3/00—Installations of electric cables or lines or protective tubing therefor in or on buildings, equivalent structures or vehicles
    • H02G3/36—Installations of cables or lines in walls, floors or ceilings
    • H02G3/38—Installations of cables or lines in walls, floors or ceilings the cables or lines being installed in preestablished conduits or ducts
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G9/00—Installations of electric cables or lines in or on the ground or water
    • H02G9/02—Installations of electric cables or lines in or on the ground or water laid directly in or on the ground, river-bed or sea-bottom; Coverings therefor, e.g. tile

Abstract

PURPOSE: An underground cable grounding device of a low voltage connecting box for an apartment house is provided to couple a ground rod with a lower receiving box installed in a lower part of the low voltage connecting box, thereby fixing an installation location. CONSTITUTION: A ground plate(22) is installed on the inner side and the bottom of a low voltage connecting box(20). The ground plate and a ground rod(24) are connected by a ground line(26). A lower receiving box whose lower part is opened is installed on the lower surface of the low voltage connecting box. The ground plate, the low voltage connecting box, and the lower receiving box are connected by a rivet(27). The center of a semi-circular groove is the same as the center between the upper part of the ground rod and a clevis when the ground rod is erect. An elastic hook piece(60) is installed on the inner surface of the lower receiving box(30) when the ground rod is horizontally folded.

Description

공동주택용 지중선로 저압접속함 접지장치{Underground Cable Grounding device of Low Voltage Cabling box for Apartment House}Underground Cable Grounding device of Low Voltage Cabling box for Apartment House}

본 발명은 공동주택용 지중선로 저압접속함 접지장치에 관한 것으로, 더욱 상세하게는 공동주택의 지중 인입분기점으로 사용되고 있는 저압접속함에 접지봉을 내장하여 접지시공을 보다 간편하게 하도록 한 공동주택용 지중선로 저압접속함 접지장치에 관한 것이다.The present invention relates to a low-voltage junction box grounding device for underground lines for multi-family housing, and more specifically, to a low-voltage connection box for a multi-unit residential underground line by embedding a ground rod in a low-voltage junction box that is used as an underground entry branch point of a multi-family house. It relates to a grounding device.

공동주택에서 지중 인입분기점으로서 저압접속함이 일반적으로 사용되고 있다. 이러한 종래 저압접속함의 구조는 첨부도면 도 1에 도시된 바와 같이 공동주택에서 지중 인입분기점으로 사용되고 있는 저압접속함(10)의 내측면 일부와 뚜껑받침면(12)을 전기적 통전체인 접지판(14)으로 덮어서 리벳(15)으로 결합하고, 지중에 매설되는 접지봉(16)과 접지판(14)을 접지선(17)으로 접속하고, 접지선(17)은 볼트(18)와 너트(19)에 의해 저압접속함(10)에 고정한 것이었다.Low voltage junction boxes are commonly used as underground entry points in apartments. The structure of the conventional low-voltage junction box is a ground plate which is a part of the inner surface of the low-voltage junction box 10 and the lid support surface 12 which is used as the underground inlet branch point in the apartment house as shown in Figure 1 14) cover with a rivet (15), and connect the ground rod (16) and the ground plate (14) buried in the ground with a ground wire (17), and the ground wire (17) is connected to the bolt (18) and the nut (19). Was fixed to the low-voltage junction box 10.

이와 같은 종래기술은 저압접속함(10)의 상부를 덮는 철뚜껑(11)과 뚜껑받침면(12) 사이에 접지판(14)이 개재되어 있으므로, 우천시 저압접속함(10)이 침수되거나 인입접속개소의 절연파괴가 일어나는 경우 저압접속함(10)으로부터 누설되는 전류가 철뚜껑(11)과 접지판(14) 및 접지선(17)을 통해 접지봉(16)으로 흘려 누전에 의한 전격사고를 방지하도록 되어 있었다.In the related art, since the ground plate 14 is interposed between the iron lid 11 and the lid support surface 12 covering the upper portion of the low pressure junction box 10, the low pressure junction box 10 is flooded or pulled in rainy weather. When insulation breakdown occurs at the connection location, current leaking from the low-voltage junction box 10 flows to the ground rod 16 through the iron lid 11, the ground plate 14, and the ground wire 17 to prevent an electric shock due to a short circuit. It was supposed to be.

그러나, 이와 같은 종래기술은 접지봉(16)과 저압접속함(10)이 상호 고정되어 있지 않았기 때문에 지중에 매설할 때 접지봉(16)의 위치가 일정하지 못해 시공품질이 크게 떨어지는 단점이 있었으며, 뿐만 아니라 복토할 때 흙속에 섞인 작은 돌이 접지선(17)을 타격하는 경우 상처를 입어 부분 단선되는 문제점이 있었다.However, since the ground rod 16 and the low-voltage junction box 10 are not fixed to each other, such a conventional technology has a disadvantage in that the construction quality is greatly reduced because the position of the ground rod 16 is not constant when buried in the ground. Rather, when a small stone mixed in the soil when the cover strikes the ground wire 17, there was a problem that the part is broken by the wound.

본 발명은 상기와 같은 문제점을 해결하기 위하여 이루어진 것으로, 그 목적은 저압접속함과 접지봉의 설치위치를 일정하게 하여 시공품을 향상시킬 수 있고, 접지봉의 시공이 간편하며, 매설시 접지봉을 연결하는 접지선을 보호할 수 있는 공동주택용 지중선로 저압접속함 접지장치를 제공함에 있다.The present invention has been made to solve the above problems, the object of which is to improve the construction by the constant installation position of the low-voltage connection box and the grounding rod, the construction of the grounding rod is easy, the grounding wire connecting the grounding rod when buried It is to provide a grounding device for the low voltage junction box for underground lines to protect the housing.

이러한 본 발명의 목적을 달성하기 위하여 저압접속함의 밑면에 설치되고 하단부가 개방된 하부수납통과, 하부수납통의 하단 개방부위를 개폐하기 위한 하부뚜껑과, 하부수납통의 내측면에 설치되는 클레비스힌지와, 클레비스힌지와 접지봉의 연결하는 힌지핀과, 접지봉의 상단부에 형성된 가동걸림턱과, 그 가동걸림턱과 만나는 위치인 클레비스힌지의 내측에 형성된 고정걸림턱과, 펼쳐진 위치의 접지봉 상단부와 클레비스힌지 사이에 형성된 반원홈과, 반원홈에 삽입되어 접지봉의 펼친 상태를 유지하는 록킹핀과, 반원홈의 내주면과 록킹핀의 외주면에 각각 형성된 원호홈 및 환형돌기와, 하부수납통의 내측면에 설치되어 접지봉을 잡는 탄성걸림편과, 접지판으로부터 저압접속함과 하부수납통을 관통하여 그 하부수납통 내부로 인출되고 접지선을 통해 접지봉과 연결되는 접속단자로 구성하여 공동주택용 지중선로 저압접속함 접지장치가 제공된다.In order to achieve the object of the present invention, the lower storage box is installed on the bottom of the low-voltage junction box and the lower end is opened, the lower lid for opening and closing the lower opening of the lower storage box, and the clevis is installed on the inner surface of the lower storage box. Hinge, the hinge pin connecting the clevis hinge and the grounding rod, the movable catching jaw formed at the upper end of the grounding rod, the fixing catching jaw formed inside the clevis hinge, which is a position that meets the movable catching jaw, and the upper end of the grounding rod in the unfolded position And a semicircular groove formed between the clevis hinge and a locking pin inserted into the semicircular groove to maintain an extended state of the ground rod, and an arc groove and an annular protrusion formed on the inner circumferential surface of the semicircular groove and the outer circumferential surface of the locking pin, respectively, Elastic catching piece which is installed on the side and catches the ground rod, and pulls out into the lower storage box through the low pressure junction box and the lower storage box from the ground plate A low pressure connection device to Ground joint houses underground cable is provided composed of connection terminals to be connected to the ground rod through.

이상에서 설명한 바와 같은 본 발명은 접지봉이 저압접속함의 하단부에 설치되어 있는 하부수납통에 결합되어 있기 때문에 시공시 설치위치를 항상 일정하게 할 수 있으며, 더욱이 접지판과 접지봉을 연결하는 플렉시블한 접지선이 하부수납통 하부에 은폐되는 구조이기 때문에 저압접속함 주위를 흙으로 메울 때 받을 수 있는 충격으로부터 보호되어 접지선의 파손을 방지할 수 있는 효과가 있고, 접지봉을 땅속에 박을 때 저압접속함에 힘을 주게 되면 간단히 박아 넣을 수 있어 시공이 간편하게 되는 효과가 있다.In the present invention as described above, since the ground rod is coupled to the lower storage box installed at the lower end of the low-voltage junction box, the installation position can always be constant during construction, and furthermore, the flexible ground wire connecting the ground plate and the ground rod is Since the structure is concealed under the lower container, it is protected from the impact that can be received when the earth around the low voltage junction is filled with soil, and it is effective to prevent the ground wire from being damaged. If you give it, you can simply put it in the construction is easy to effect.

더 나아가서 본 발명은 하부수납통의 외주면에 형성되어 있는 커팅홈을 이용 하부수납통의 하단 일부를 절개한 후 분리한 상태로 시공하게 되면, 접지봉의 땅속 삽입깊이를 더욱 증대시킬 수 있게 되어 접지효율 향상을 기대할 수 있다.Furthermore, the present invention is to use the cutting groove formed on the outer circumferential surface of the lower container, and then cut off the lower part of the lower container and then installed in a separated state, it is possible to further increase the insertion depth of the ground rod in the ground efficiency You can expect an improvement.

도 1은 종래 공동주택용 지중선로 저압접속함 접지장치를 보인 단면도
도 2는 본 발명에 따른 공동주택용 지중선로 저압접속함 접지장치를 보인 사시도
도 3은 본 발명에 따른 공동주택용 지중선로 저압접속함 접지장치를 보인 단면도
도 4는 본 발명에 따른 접지봉이 접힌 상태에서 힌지부의 구조를 보인 저면 분해사시도
도 5는 본 발명에서 하부뚜껑이 개방된 상태에서 접지봉이 수납된 것을 보인 저면사시도
도 6은 본 발명에서 하부뚜껑이 개방된 상태에서 접지봉이 펼쳐진 것을 보인 저면사시도
도 7은 본 발명에서 하부뚜껑이 분리된 상태에서 접지봉이 펼쳐진 것을 보인 단면도1 is a cross-sectional view showing a grounding device for a low voltage junction box for a conventional underground line
Figure 2 is a perspective view showing a ground wire low voltage junction box grounding device for a multi-unit house according to the present invention
Figure 3 is a cross-sectional view showing a ground wire low voltage junction box grounding device for a multi-unit housing according to the present invention
Figure 4 is an exploded bottom perspective view showing the structure of the hinge portion in the folded state the ground rod according to the present invention
Figure 5 is a bottom perspective view showing that the ground rod is accommodated in the lower lid open state in the present invention
Figure 6 is a bottom perspective view showing that the ground rod is deployed in the lower lid open state in the present invention
Figure 7 is a cross-sectional view showing that the ground rod is unfolded in the state the lower lid is separated in the present invention

이하 본 발명에 따른 실시예를 첨부도면을 참조하여 상세히 설명한다.Hereinafter, exemplary embodiments of the present invention will be described in detail with reference to the accompanying drawings.

첨부도면 도 2 내지 도 7에 도시된 바와 같이 저압접속함(20)의 내측면과 바닥면에 접지판(22)이 설치되고, 그 접지판(22)과 접지봉(24)이 접지선(26)을 통해 접속되는 통상의 구조를 갖는다.2 to 7, the ground plate 22 is installed on the inner side and the bottom surface of the low voltage junction box 20, and the ground plate 22 and the ground rod 24 are connected to the ground wire 26. It has a conventional structure that is connected through.

여기서 하단부가 개방된 하부수납통(30)을 저압접속함(20)의 밑면에 설치하고, 그 하부수납통(30)의 하단 개방부위에 개폐를 위한 하부뚜껑(32)를 설치하며, 하부뚜껑(32)의 밑면 중심에는 손잡이(34)를 설치하여 하부뚜껑(32)의 분리를 보다 쉽게 하고, 하부수납통(30)의 내주면에 형성된 홈부(30t)에 걸리는 다수의 탄성후크(33)를 하부뚜껑(32)의 상면으로부터 수직으로 형성한다.Here, the lower container 30, which is open at the lower end, is installed at the bottom of the low pressure connection box 20, and the lower lid 32 for opening and closing is installed at the lower opening of the lower container 30, and the lower lid A handle 34 is installed at the center of the bottom of the 32 to facilitate the separation of the lower lid 32, and a plurality of elastic hooks 33 are caught by the grooves 30t formed on the inner circumferential surface of the lower storage container 30. It is formed vertically from the upper surface of the lower lid (32).

또한, 접지판(22)과 저압접속함(20) 및 하부수납통(30)은 리벳(27)에 의해 연결된다.In addition, the ground plate 22, the low-voltage junction box 20 and the lower housing 30 is connected by a rivet 27.

상기 하부수납통(30)의 내측면에 설치되는 클레비스힌지(40)와 상기 접지봉(24)을 관통하는 힌지핀(42)에 의해 클레비스힌지(40)와 접지봉(24)을 연결하여 접지봉(24)이 수평위치(접힘) 또는 수직위치(세워짐)로 자유롭게 회전되도록 한다.The ground rod is connected to the clevis hinge 40 and the ground rod 24 by a clevis hinge 40 and a hinge pin 42 penetrating through the ground rod 24 installed on the inner surface of the lower housing 30. (24) Rotate freely to the horizontal position (folded) or vertical position (upright).

그리고, 접지봉(24)이 수직으로 세워졌을 때 걸리도록 하기 위해 접지봉(24)의 상단부에 가동걸림턱(44)을 형성하고, 이 가동걸림턱(44)과 만나는 위치인 클레비스힌지(40)의 내측에는 고정걸림턱(46)을 형성한다.And, in order to be caught when the grounding rod 24 is standing vertically to form a movable catching jaw 44 in the upper end of the grounding rod 24, the clevis hinge (40) which is a position that meets the movable catching jaw (44) The inner side of the fixing engaging jaw 46 is formed.

또한, 접지봉(24)이 세워진 상태를 고정하기 위해 접지봉(24)이 세워졌을 때의 접지봉(24) 상단부와 클레비스힌지(40) 사이에 중심이 일치하는 반원홈(52)(54)을 형성하고, 그 반원홈(52)(54)에 삽입되는 록킹핀(50)을 구비한다.In addition, the semicircular grooves 52 and 54 having a center coincide between the upper end of the ground rod 24 and the clevis hinge 40 when the ground rod 24 is standing up to fix the ground rod 24. And a locking pin 50 inserted into the semicircular grooves 52 and 54.

또, 반원홈(52)(54)의 내주면과 록킹핀(50)의 외주면에 각각 원호홈(52g)(54g)과 환형돌기(50r)를 형성하여 록킹핀(50)이 반원홈(52)(54)으로부터 이탈되는 것을 방지한다.In addition, circular locking grooves 52g and 54g and annular projections 50r are formed on the inner circumferential surface of the semicircular grooves 52 and 54 and the outer circumferential surface of the locking pin 50, respectively, so that the locking pin 50 is the semicircular groove 52. The deviation from 54 is prevented.

한편, 하부수납통(30)의 내측면에는 접지봉(24)이 수평하게 접혀있을 때 잡는 탄성걸림편(60)을 설치하며, 접지판(22)으로부터 저압접속함(20)과 하부수납통(30)을 관통하여 그 하부수납통(30) 내부로 인출되는 접속단자(70)를 구비하여 접지선(26)을 통해 접지봉(24)과 접속단자(70)를 연결하도록 한다.On the other hand, the inner surface of the lower container 30 is provided with an elastic catching piece 60 to be gripped when the ground rod 24 is horizontally folded, the low-pressure connection box 20 and the lower container ( It is provided with a connection terminal 70 through the 30 through the lower container 30 is connected to the grounding rod 24 and the connection terminal 70 through the ground wire 26.

즉, 접지봉(24)은 누전시 접지선(26)과 접속단자(70)를 통해 접지판(22) 및 철뚜껑(28)과 통전상태를 유지하게 된다.That is, the grounding rod 24 maintains an energized state with the ground plate 22 and the iron lid 28 through the ground wire 26 and the connection terminal 70 when a short circuit occurs.

또한, 상기 하부수납통(30)의 외주면에 “V”자 모양의 커팅홈(31)을 형성하여 커터칼 등과 같은 절개공구에 의해 하부수납통(30)의 하단부를 더욱 짧게 절개함으로써 토사유입을 용이하게 함으로써 접지효율을 증대시킬 수 있도록 할 수 있다.In addition, by forming a cutting groove 31 having a “V” shape on the outer circumferential surface of the lower container 30, the soil inflow is reduced by cutting the lower end of the lower container 30 shorter by a cutting tool such as a cutter knife. By making it easy, it is possible to increase the grounding efficiency.

이하 본 발명에 따른 작용을 첨부된 도면에 의거하여 상세히 설명하면 다음과 같다.Hereinafter, the operation according to the present invention will be described in detail with reference to the accompanying drawings.

첨부도면 도 2 내지 도 7에 도시된 바와 같이 저압접속함(20)의 하부에 설치되어 있는 하부수납통(30)의 하단을 개방하기 위해 하부뚜껑(32)의 중앙에 달린 손잡이(34)를 잡고 당기게 되면, 하부뚜껑(32)이 하부수납통(30)으로부터 분리된다.As shown in FIGS. 2 to 7, the handle 34 mounted at the center of the lower lid 32 is opened to open the lower end of the lower container 30 installed at the lower portion of the low pressure junction box 20. When pulled and pulled, the lower lid 32 is separated from the lower container (30).

이때 하부뚜껑(32)에 형성되어 있는 탄성후크(33)가 중심쪽으로 약간 변형되면서 하부수납통(30)의 내주면에 형성되어 있는 홈부(30t)로부터 이탈된 후 복원된다.At this time, the elastic hook 33 formed on the lower lid 32 is slightly deformed toward the center, and is restored after being separated from the groove portion 30t formed on the inner circumferential surface of the lower housing 30.

이후 하부수납통(30)에 접혀진 상태로 있는 접지봉(24)을 아래쪽으로 잡아당기게 되면, 접지봉(24)이 힌지핀(42)을 중심으로 회전되면서 탄성걸림편(60)으로부터 이탈되어 수직으로 펼쳐지게 된다.After pulling down the ground rod 24 folded in the lower container 30, the ground rod 24 is rotated about the hinge pin 42 while being separated from the elastic catching piece 60 to be unfolded vertically. do.

이때 탄성걸림편(60)은 바깥쪽으로 약간 변형되면서 접지봉(24)의 이탈을 돕게 되며, 접지봉(24)이 완전히 이탈된 후에는 탄성복원력에 의해 원형으로 복원된다.At this time, the elastic locking piece 60 is slightly deformed to the outside to help the separation of the grounding rod 24, and after the grounding rod 24 is completely removed is restored to the circular by the elastic restoring force.

또한, 접지봉(24)의 상단에 형성되어 있는 가동걸림턱(44)이 클레비스힌지(40)에 형성되어 있는 고정걸림턱(46)에 닿는 순간 접지봉(24)의 회전은 멈추게 되며, 접지봉(24)은 수직으로 이루게 된다.In addition, when the movable catching jaw 44 formed at the upper end of the grounding rod 24 touches the fixed catching jaw 46 formed at the clevis hinge 40, the rotation of the grounding rod 24 is stopped, and the grounding rod ( 24) is made vertical.

위와 같이 접지봉(24)이 아래쪽을 향해 수직으로 세워진 상태에서 접지봉(24)의 상단에 형성된 반원홈(52)의 중심과 클레비스힌지(40)에 형성된 반원홈(54)의 중심이 일치되면서 원통형을 이루게 되는데, 이때 중심이 일치된 반원홈(52)(54)으로 록킹핀(50)을 삽입하게 되면, 접지봉(24)의 움직임이 고정된다.As described above, the center of the semicircular groove 52 formed on the top of the ground rod 24 and the semicircular groove 54 formed on the clevis hinge 40 coincide with each other in a state in which the ground rod 24 is vertically set downward. When the locking pin 50 is inserted into the semicircular grooves 52 and 54 whose centers coincide with each other, the movement of the ground rod 24 is fixed.

또, 록킹핀(50)을 반원홈(52)(54)에 삽입하는 과정에서 록킹핀(50)의 외주면에 형성되어 있는 환형돌기(50r)가 반원홈(52)(54)에 형성되어 있는 원호홈(52g)(54g)에 일치될 때 걸리면서 록킹핀(50)이 반원홈(52)(54)으로부터 이탈되는 것이 방지된다.In addition, in the process of inserting the locking pin 50 into the semicircular grooves 52 and 54, the annular protrusion 50r formed on the outer circumferential surface of the locking pin 50 is formed in the semicircular grooves 52 and 54. The locking pin 50 is prevented from being separated from the semicircular grooves 52 and 54 while being caught when coinciding with the arc grooves 52g and 54g.

이때, 하부수납통(30)에 형성되어 있는 커팅홈(31)을 커터칼과 같은 절단공구를 이용하여 절개하게 되면, 하부수납통(30)의 길이가 더욱 짧아지게 되어 접지봉(24)을 땅속에 더욱 깊게 박아 넣을 수 있게 된다.At this time, when the cutting groove 31 formed in the lower container 30 is cut using a cutting tool such as a cutter knife, the length of the lower container 30 is further shortened, and the ground rod 24 is grounded. It will be able to drive deeper into the.

위와 같이 접지봉(24)이 펼쳐진 상태에서 접지봉(24)을 굴착면에 박아 넣게 되면, 접지봉(24)은 땅속을 파고들게 되며, 저압접속함(20)의 아래쪽 부위는 굴착면에 밀착되는데, 이때 흙으로 저압접속함(20) 주위를 메우게 되면, 시공이 완료된다.When the ground rod 24 is driven into the excavation surface while the ground rod 24 is unfolded as described above, the ground rod 24 is dug into the ground, and the lower portion of the low pressure junction box 20 is in close contact with the excavation surface. When the soil is filled around the low-pressure junction box 20, the construction is completed.

한편, 우천시 저압접속함(20)이 침수되거나 저압접속함(20)으로 인입분기되는 전력케이블(도시 생략)의 절연이 파괴되어 철뚜껑(28)이나 접지판(22)으로 누설전류가 흐르게 되면, 접지판(22)으로부터 접속단자(70)와 접지선(26)을 통해 접지봉(24)으로 전류가 흐르게 되고, 접지봉(24)으로 흐른 누설전류는 대지로 흘러서 감전사고를 방지하게 된다.On the other hand, when the rain-voltage low-voltage junction box 20 is flooded or the insulation of the power cable (not shown) that is branched into the low-voltage junction box 20 is broken and the leakage current flows to the iron lid 28 or the ground plate 22 The current flows from the ground plate 22 to the ground rod 24 through the connection terminal 70 and the ground wire 26, and the leakage current flowing to the ground rod 24 flows to the ground to prevent an electric shock accident.

20 : 저압접속함 22 : 접지판
24 : 접지봉 26 : 접지선
27 : 리벳 28 : 철뚜껑
30 : 하부수납통 30t : 홈부
31 : 커팅홈 32 : 하부뚜껑
33 : 탄성후크 34 : 손잡이
40 : 클레비스힌지 42 : 힌지핀
44 : 가동걸림턱 46 : 고정걸림턱
50 : 록킹핀 50r : 환형돌기
52,54 : 반원홈 52g,54g : 원호홈
60 : 탄성걸림편 70 : 접속단자20: low voltage junction box 22: ground plate
24: ground rod 26: ground wire
27: rivet 28: iron lid
30: lower storage container 30t: groove portion
31: cutting groove 32: lower lid
33: elastic hook 34: handle
40: clevis hinge 42: hinge pin
44: movable jam jaw 46: fixed jam jaw
50: locking pin 50r: annular protrusion
52,54: semi-circle groove 52g, 54g: arc groove
60: elastic locking piece 70: connection terminal

Claims (2)

저압접속함(20)의 내측면과 바닥면에 접지판(22)이 설치되고, 그 접지판(22)과 접지봉(24)이 접지선(26)을 통해 접속된 공동주택용 지중선로 저압접속함 접지장치에 있어서,
상기 저압접속함(20)의 밑면에 설치되고 하단부가 개방된 하부수납통(30)과, 하부수납통(30)의 하단 개방부위를 개폐하기 위한 하부뚜껑(32)과, 하부수납통(30)의 내측면에 설치되는 클레비스힌지(40)와, 클레비스힌지(40)와 상기 접지봉(24)의 연결하는 힌지핀(42)과, 접지봉(24)의 상단부에 형성된 가동걸림턱(44)과, 그 가동걸림턱(44)과 만나는 위치인 클레비스힌지(40)의 내측에 형성된 고정걸림턱(46)과, 펼쳐진 위치의 접지봉(24) 상단부와 클레비스힌지(40) 사이에 형성된 반원홈(52)(54)과, 반원홈(52)(54)에 삽입되어 접지봉(24)의 펼친 상태를 유지하는 록킹핀(50)과, 반원홈(52)(54)의 내주면과 록킹핀(50)의 외주면에 각각 형성된 원호홈(52g)(54g) 및 환형돌기(50r)와, 하부수납통(30)의 내측면에 설치되어 접지봉(24)을 잡는 탄성걸림편(60)과, 접지판(22)으로부터 저압접속함(20)과 하부수납통(30)을 관통하여 그 하부수납통(30) 내부로 인출되고 접지선(26)을 통해 접지봉(24)과 연결되는 접속단자(70)로 구성된 것을 특징으로 하는 공동주택용 지중선로 저압접속함 접지장치.Ground plate 22 is installed on the inner surface and the bottom surface of the low-voltage junction box 20, the ground plate 22 and the ground rod 24 is connected to the ground wire for low-voltage junction box In the apparatus,
The lower container 30 is installed on the bottom of the low-pressure connection box 20 and the lower end is opened, the lower lid 32 for opening and closing the lower opening of the lower container 30, and the lower container 30. Clevis hinge 40, the clevis hinge 40 and the hinge pin 42 for connecting the ground rod 24 and the movable catching jaw 44 formed at the upper end of the ground rod 24 are installed on the inner side of the ), A fixed locking jaw 46 formed inside the clevis hinge 40, which is a position that meets the movable locking jaw 44, and formed between the upper end of the ground rod 24 and the clevis hinge 40 in the unfolded position. Semicircular grooves (52) and (54), Locking pins (50) inserted into the semicircular grooves (52) and 54 to maintain the extended state of the ground rod (24), and inner circumferential surfaces and locks of the semicircular grooves (52) and (54). Circular engaging groove (52g) (54g) and the annular projection (50r) formed on the outer circumferential surface of the king pin (50), and the elastic engaging piece (60) is installed on the inner side of the lower housing (30) to hold the ground rod (24) and , Low voltage connection from ground plate 22 Apartment 20, characterized in that consisting of the connection terminal 70 is drawn through the lower storage container 30 and drawn out into the lower storage container 30 and connected to the grounding rod 24 through the ground wire 26. Ground line low voltage junction box grounding device. 제 1 항에 있어서, 상기 하부수납통(30)의 외주면에 “V”자 모양의 커팅홈(31)이 형성된 것을 특징으로 하는 공동주택용 지중선로 저압접속함 접지장치.According to claim 1, "V" shaped grooves on the outer circumferential surface of the lower housing (30) is characterized in that the underground line for low-voltage junction box for the earthquake housing.
KR1020110013720A 2011-02-16 2011-02-16 Underground cable grounding device of low voltage cabling box for apartment house KR101028421B1 (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101239745B1 (en) 2012-12-21 2013-03-06 (주)금정이엔씨 Underground cable grounding device of low voltage cabling box for apartment house
KR20210156659A (en) * 2020-06-18 2021-12-27 한국전력공사 Grounding apparatus and an electric cable connecting box having the same

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200257071Y1 (en) 2001-09-20 2001-12-31 주식회사 디엠테크 Ground for electric pole using the material decreasing the shaped ground resistance
KR20040038192A (en) * 2002-10-31 2004-05-08 한국전력공사 Ground connection apparatus of low pressure connection box
KR20080037373A (en) * 2006-10-26 2008-04-30 (주)드림인기술 Concrete electric pole having earthing apparatus

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR200257071Y1 (en) 2001-09-20 2001-12-31 주식회사 디엠테크 Ground for electric pole using the material decreasing the shaped ground resistance
KR20040038192A (en) * 2002-10-31 2004-05-08 한국전력공사 Ground connection apparatus of low pressure connection box
KR20080037373A (en) * 2006-10-26 2008-04-30 (주)드림인기술 Concrete electric pole having earthing apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101239745B1 (en) 2012-12-21 2013-03-06 (주)금정이엔씨 Underground cable grounding device of low voltage cabling box for apartment house
KR20210156659A (en) * 2020-06-18 2021-12-27 한국전력공사 Grounding apparatus and an electric cable connecting box having the same
KR102390327B1 (en) * 2020-06-18 2022-04-26 한국전력공사 Grounding apparatus and an electric cable connecting box having the same

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