KR101505635B1 - Low-voltage joint box for underground line - Google Patents

Abstract

The present invention relates to an underground low-voltage junction box. More specifically, the upper part of the underground low-voltage junction box (hereinafter ″junction box″) is modified and a compartment cover for the top of the unit is manufactured to aid in concealment and easy finishing during construction. According to the invention, an internal space is formed in the main body of the junction box and the top is left open. The opening at the top protrudes upward and is narrower than the left and right ends of the top surface, forming flanking grooves lower than the top opening. A flat plate cover identical in width to the main body of the junction box covers the top opening, and the bottom left and right ends are lower than the rest of the unit so as to sit flush with the lowered top ends of the junction box. When the flat plate cover is combined and secured with the main body of the junction box, covertness is maintained and separation of the cover is prevented.

Description

LOW VOLTAGE JOINT BOX FOR UNDERGROUND LINE

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an underground low-voltage connection box, and more particularly, to an underground low-voltage connection box, The present invention relates to an underground low-pressure connection box which can be easily maintained and closed.

In general, the main cable for supplying electricity to houses, commercial buildings, and buildings is connected to a branch cable in an underground low-voltage junction box to supply power to each customer. In the underground low-voltage connection box, a connection box main body securing a connection space for connecting cables is embedded under the ground such as a road or a lead, and is opened / closed by a steel cover. Since the underground low-voltage connection box is made of steel and is buried in the ground to easily flood, there is a problem that a leakage current due to leakage occurs during the rainy season, causing serious electric shock accidents.

In order to improve this, a method of manufacturing an underground low-pressure connection box with a synthetic resin material (FRP) has been developed. However, an underground low-pressure connection case made of a synthetic resin material has an empty space at the outer edge of the upper lid, The cement mortar portion is easily broken due to the vehicle or the like because the cement mortar has a construction finish to match the height of the ground.

In addition, the mass of the broken cement mortar is separated from the outer rim of the underground low-pressure connection box, the main body of the underground low-pressure connection box is exposed, and a height difference from the surface of the road or the sidewalk is generated and the pedestrian is tripped, , And particularly, the appearance of the finished part damaged by the cement mortar is damaged, which makes the surrounding environment of the low-pressure connection box undesirably deteriorate, which is the object of damaging the cityscape.

Korean Utility Model Registration Bulletin 20-0398625 (October 07, 2005)

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the problems described above, and it is an object of the present invention to provide an underground low- The present invention has been made in view of the above problems, and it is an object of the present invention to provide an underground low-pressure connection box that can be easily closed and finished.

It is another object of the present invention to provide an underground low-pressure connection box which can be fixed to a connection box main body and can securely fix the connection box cover at the time of repairing and repairing.

It is another object of the present invention to provide an underground low-pressure connection box that can be easily damaged by a vehicle or the like, thereby maintaining the appearance even after a completion of construction for a long period of time.

The problems to be solved by the present invention are not limited to the above-mentioned problems, and other problems to be solved by the present invention, which are not mentioned here, As will be appreciated by those skilled in the art.

The underground low-pressure connection case according to the present invention is characterized in that a hollow space is formed inside and an upper end thereof is opened and an upper opening is formed to be narrower than the left and right ends of the upper surface and further protruded upward, A connection box body in which a lower main body groove portion is formed than the upper opening portion; And the upper opening of the connection box main body, wherein the width of the flat plate is the same as the width of the upper surface, and the lower portions of the left and right sides are further protruded downward in conformity with the height and the area of the main body groove, The connecting lid is connected to the connecting main body. When the lid is coupled by lifting up the lid, the lid protruding portion is closely attached to the main body groove portion to maintain the airtightness and prevent the connecting lid from falling off.

In addition, hexagonal bolts are provided on the upper and lower sides of the joint housing lid according to the present invention, respectively, so that the joint housing lid is fastened to the main body of the connecting body, and between the hexagonal bolts in the forward and backward direction, And a handle is provided for the operation.

The connecting box lid according to the present invention includes a pair of pull bars formed in parallel to each other in the front and rear direction on the left and right sides of the upper surface and extending downwardly provided with lid protrusions on both front and rear ends of the pull bars, A handle bar having a hooking protrusion formed along an outer side surface thereof and a groove recessed downward from an upper surface of the lid for accommodating the handle bar and the handle leg, And a lid groove formed in the lower portion of the second lid groove so as to correspond to the shape of the handle leg and having an escape preventing protrusion formed on the inner side of the upper end of the second lid groove to engage with the latching protrusion The handle bar and the handle leg are accommodated in the lid groove portion so that the upper surface of the handle bar is connected to the flat surface at the same height as the upper surface of the lid. When the connection box lid is lifted, the handlebar and the knob leg are moved upward to expose from the upper surface of the connection box lid, and the engagement protrusion and the separation preventing jaw come into contact with each other, Thereby preventing deviation.

Further, the connection case lid of the present invention further includes a vertical elastic spring provided below the knob leg to provide an upward force to the knob leg, wherein the lid groove is formed so as to receive the elastic spring even below the length of the knob leg A bolt fastening hole extending from the bottom surface of the lid groove portion to the lower surface of the connection case lid from which the lid protruding portion is provided and a bolt fastening hole passing through the handle bar and the knob leg, The upper portion of the bolt fastening hole is formed so as to accommodate the head of the hexagonal bolt so as to accommodate the head of the hexagonal bolt and the bolt fastening hole is formed in correspondence with the bolt fastening hole. So that the handle bar and the handle leg are covered by the fastening force of the hexagonal bolt The hook bar and the handle leg are automatically moved upward by the elastic force of the vertical elastic spring so that the hook bar and the leg leg are automatically moved upward from the upper surface of the connection case lid by the action of releasing and removing the hexagonal bolt And is exposed.

According to the present invention, there is provided a connector housing lid comprising: a fixing protrusion protruding from at least one of a left side and a right side of a lower portion of a lid groove portion; and at least one of left and right sides of a lid protrusion at a lower portion of the lid groove portion, A protrusion hole for movably supporting the protrusion in one of the left and right directions and restricting the amount of movement and a horizontal elastic spring mounted on the outside of the fixing protrusion in the protrusion hole for providing an elastic force to move the fixing protrusion inward in the left- The handle leg is formed in such a shape that the lower end is gradually reduced in width and is brought into contact with one end of the fixing protrusion to move upward or downward to expose or insert the fixing protrusion from the protrusion hole into the inside, When the handle leg is moved downward, the fixing protrusion is pushed by the inclined surface of the handle leg, Is inserted and fixed in at least one of the first fixing groove provided in the connection case main body or the second fixing groove provided in the external wall surface in a state of being exposed from the connection case main body, and when the connection case lid is lifted, The fixing protrusion is returned to the inside and is detached from at least one of the first fixing groove and the second fixing groove in a state of being inserted into the protrusion hole.

In addition, the main body groove portion of the connection box main body of the present invention is formed so as to extend to both the front and rear sides of the top opening, and the cover projection protrudes from both sides of the main body groove portion.

According to the solution of the above-mentioned problem, the underground low-voltage connection box of the present invention deforms the structure of the upper part of the upper part of the underground low-pressure connection box main body and manufactures the integral connection cover cover according to the upper structure of the main body, The airtightness of the container can be maintained, and the airtight container can be easily closed.

In addition, the underground low-voltage connection box of the present invention is connected to the connection box main body in a normal state. The cover can be firmly fixed, and the connection box cover can be easily separated at the time of repair and repair.

In addition, the underground low-pressure junction box of the present invention is not easily broken by a vehicle or the like, so that the appearance can be maintained intact for a long period of time after the completion of construction, thereby improving the beauty of the city.

1 is a perspective view showing an underground low-voltage connection box according to a first embodiment of the present invention.
FIG. 2 is an exploded perspective view showing a separated state of the underground low-pressure connection box according to the first embodiment of the present invention.
3 is a view showing a handle and a hexagonal bolt fastened to the underground low-pressure connection case according to the first embodiment of the present invention.
4 is a plan view showing an underground low-voltage connection box according to a second embodiment of the present invention.
5 is a cross-sectional view illustrating an underground low-pressure connection box according to a second embodiment of the present invention.
6 is a cross-sectional view showing a state in which the underground low-voltage connection box according to the third embodiment of the present invention is in a normal state.
7 is a cross-sectional view showing a state in which the connection box lid of the underground low-voltage connection box is lifted according to the third embodiment of the present invention.
8 is a perspective view showing an underground low-voltage connection box according to a fourth embodiment of the present invention.
9 is a perspective view showing an underground low-pressure connection box according to a fifth embodiment of the present invention.
10 is an exploded perspective view showing a separated state of an underground low-pressure connection box according to a fifth embodiment of the present invention.

The above and other objects, features and advantages of the present invention will be more apparent from the following detailed description taken in conjunction with the accompanying drawings, in which: FIG. BRIEF DESCRIPTION OF THE DRAWINGS The advantages and features of the present invention and the manner of achieving them will become apparent with reference to the embodiments described in detail below with reference to the accompanying drawings.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described in more detail with reference to the accompanying drawings.

≪ Embodiment 1 >

1 to 3 are views for explaining an underground low-voltage connection box according to a first embodiment of the present invention. 2 is a disassembled perspective view illustrating a state in which the underground low-pressure connection box according to the first embodiment of the present invention is separated, and FIG. 2 is an exploded perspective view 3 is a view showing a handle and a hexagonal bolt fastened further to the underground low-pressure connection box according to the first embodiment of the present invention.

1 to 3, an underground low-voltage connection box according to the first embodiment of the present invention includes a connection box main body 100 and a connection box cover 200.

The connection box main body 100 has a hexahedral space portion formed therein and an upper end thereof is opened. In addition, the connection box main body 100 is formed such that the upper opening thereof is narrower than the left and right ends of the upper surface, and further protrudes upward so that a lower body opening 110 is formed on both left and right sides of the upper opening. The connection box main body 100 having such a structure is installed in the middle of the underground low-voltage distribution line and is used for branching of the branch line or lead line and for separating the fault section, and is embedded in the ground.

The connection box lid 200 is formed in a flat plate shape so as to cover the upper opening of the connection box body 100. Further, the width of the flat plate of the connection case lid 200 is formed to be the same as the width of the upper surface, and the lower portion of both left and right ends is formed with a lid protrusion 210 protruding further downward in accordance with the height and area of the main groove 110 do. In addition, a mesh-like concavity and convexity for preventing slipping is formed on the upper surface of the connection case lid 200.

When the lid 200 is coupled with the lid 200, the lid protrusions 210 are formed on the body lid 110, and the lid protrusions 210 are connected to the connection lid 100. [ It is possible to maintain the airtightness and prevent the detachment of the connection case cover. That is, since the connection case lid 200 covers the entire front face of the connection case 100 and further bends to the side to further improve the airtightness, it is possible to provide a waterproof effect in case of a rainfall.

In addition, it is possible to prevent the detachment of the connection housing lid 200 from the connection housing main body 100 due to an external impact or the like by the latching jaw structure in which the main body groove portion 110 and the lid protrusion 210 are engaged with each other. Further, as can be seen from the embodiments to be described later, the lid protrusion 210 is further formed on the connection case lid 200, so that the space can be further utilized by the volume of the lid protrusion 210, There are advantages to be able to.

3, hexagonal bolts 220 are provided on the top surface of the connection case lid 200 according to the first embodiment of the present invention in both forward and backward directions from the left and right sides of the connection case lid 200, To the main body 100 of the connection box. It is also possible to provide a grip 230 between the hexagonal bolts 220 in the forward and backward direction to lift and open the connection housing lid 200. The handle 230 is formed to be accommodated in the inner space of the lid protrusion 210 of the connection case lid 200 and is accommodated in the connection case lid 200 at the normal time and is lifted up from the connection case lid 200 It may be exposed upward and formed. In the case of a hexagonal bolt, a bolt head of another polygonal shape may be employed as needed, and a cross groove or a slot groove may be formed at the upper end.

Thus, the underground low-voltage connection box according to the first embodiment of the present invention deforms the structure of the upper end of the underground low-pressure connection box main body while manufacturing an integral connection cover lid according to the upper structure of the main body, The hermeticity of the connection box can be maintained, and there is an advantage that it can be easily finished and finished.

In addition, the underground low-voltage connection box according to the first embodiment of the present invention is connected to the connection box main body at normal times. The cover can be firmly fixed, and the connection box cover can be easily separated .

In addition, the underground low-voltage connection box according to the first embodiment of the present invention is advantageous in that it is not easily damaged by a vehicle or the like, and the appearance is maintained even after completion of the construction for a long period of time.

≪ Embodiment 2 >

4 and 5 are views for explaining an underground joint connection box according to a second embodiment of the present invention. 4 is a plan view showing an underground low-voltage connection box according to a second embodiment of the present invention, and FIG. 5 is a cross-sectional view illustrating an underground low-pressure connection box according to a second embodiment of the present invention. Here, the left part of FIG. 5 shows the cross section of all the components according to the second embodiment of the present invention, while the right part of FIG. 5 shows the second embodiment of the present invention And shows a state in which the handlebar or the like is exposed upward when lifting up the connection case lid.

4 and 5, the underground low-voltage connection box according to the second embodiment of the present invention includes a connection box main body 300 and a connection box cover 400. As shown in FIG.

Here, the structure and shape of the connection case body 300 and the connection case cover 400 of the underground low-voltage connection case according to the second embodiment of the present invention are the same as those of the connection case main body 300 of the underground low-voltage connection case according to the first embodiment of the present invention 100 and the connection housing lid 200, the detailed description thereof will be made with reference to the first embodiment of the present invention described above with reference to Figs. 1 to 3, do.

The connection compartment lid 400 according to the second embodiment of the present invention includes the handle bar 420, the handle leg 430, and the cover lid 440. [

The handle bar 420 has a bar shape and is formed in a pair in the front and rear direction on both left and right sides of the upper surface of the connection port cover 400.

The handle legs 430 extend to the lower space provided by the lid protrusions 410 at both the front and rear ends of the respective handle bars 420. A locking protrusion 431 is formed along the lower outer surface of the handle leg 430.

The cover groove portion 440 is formed as a groove which is downwardly recessed from the upper surface of the cover 400 which is connected to accommodate the handle bar 420 and the handle leg 430.

Specifically, the lid groove portion 440 is formed as a first lid groove 441 extending horizontally in the upper portion corresponding to the shape of the handlebar 420, and vertically corresponding to the shape of the knob 430 The second lid groove 442 is formed with an elongated second lid groove 442 and an inner side surface of the upper end of the second lid groove 442 is formed with an escape preventing protrusion 443 to be engaged with the latch protrusion 431.

4 and 5, when the handle bar 420 and the handle leg 430 are brought into contact with the lid groove 430, the connection bar cover 400 according to the second embodiment of the present invention having the above- And the upper surface of the handle bar 420 is flush with the upper surface of the connection-housing cover 400.

5, the knob bar 420 and the knob leg 430 are moved upward to be exposed from the upper surface of the connection case cover 400 (refer to FIG. 5) . At this time, it is possible to prevent the handle bar 420 and the handle leg 430 from being separated from the connection port cover 400 by abutting the engagement protrusion 431 and the separation prevention protrusion 443.

The connection case cover 400 according to the second embodiment of the present invention includes a vertical elastic spring 450 provided below the handle leg 430 to provide an upward force to the handle leg 430 And the cover groove portion 440 may extend below the length of the handle leg 430 to accommodate the vertical elastic spring 450 to form the receiving space 444 of the vertical elastic spring 450.

The connection housing lid 400 is connected to the lower surface of the connection housing lid 400 through which the lid protrusion 410 is provided from the bottom surface of the lid groove portion 440 through the handle bar 420 and the handle leg 430 And a hexagonal bolt 470 inserted into the bolt fastening hole 460 and fastened to the bolt fastening hole 460. At this time, the upper part of the bolt fastening hole 460 is formed to match the head shape of the hexagonal bolt 470 so as to accommodate the head 471 of the hexagonal bolt 470.

A bolt fastening groove 320 is formed on the upper surface of the main body groove 310 of the main body 300 corresponding to the bolt fastening hole 460.

In the underground low-voltage connection box according to the second embodiment of the present invention, the handle bar 420 and the handle leg 430 are engaged with the lid groove portion (not shown) by the fastening force of the hexagonal bolt 470, 440).

When the connection box lid 400 is lifted up, the handle bar 420 and the knob leg 430 are automatically moved upward by the elastic force of the vertical elastic spring 450 in the operation of releasing and removing the hexagonal bolt 470. [ So that it can be exposed from the top surface of the connection case cover 400.

That is, normally, the handle bar is accommodated in the lid of the connection box, so that it can be prevented that the pedestrian or the vehicle is disturbed, and thereby the handlebar is prevented from being broken. For example, a general person can arbitrarily grasp the handle bar to lift up the connection box lid, or to prevent the handle from being exposed upward due to an impact when the vehicle passes. In addition, when the user removes the connection box lid from the connection body, the handle bar can be easily exposed by releasing the dog bone bolt.

As described above, the underground low-voltage connection box according to the second embodiment of the present invention deforms the structure of the upper part of the upper portion of the underground low-pressure connection box main body and manufactures the integral connection cover cover according to the upper structure of the main body, The hermeticity of the connection box can be maintained, and there is an advantage that it can be easily finished and finished.

In addition, the underground low-voltage connection box according to the second embodiment of the present invention is connected to the connection box main body in a normal state. The cover can be firmly fixed, and the connection box cover can be easily separated .

In addition, the underground low-voltage connection box according to the second embodiment of the present invention is advantageous in that it is not easily damaged by a vehicle or the like, and the appearance is maintained even after completion of the construction for a long period of time.

≪ Third Embodiment >

6 and 7 are views for explaining an underground low-voltage connection box according to a third embodiment of the present invention. 6 is a cross-sectional view showing a state in which the underground low-voltage connection box according to the third embodiment of the present invention is in a normal state, and FIG. 7 is a perspective view of the underground low-voltage connection box according to the third embodiment of the present invention, Fig. 6 and 7, some components according to the second embodiment of the present invention, i.e., the vertical elastic spring, the bolt fastening hole, the bolt fastening groove, the hexagonal bolt, and the like are omitted. 6 and 7, the underground low-pressure connection box according to the third embodiment of the present invention may be omitted, and if necessary, the vertical elastic spring, the bolt fastening hole, the bolt fastening hole, Bolts and the like can be applied to form an underground low-voltage connection box according to the third embodiment of the present invention.

6 and 7, the underground low-voltage connection box according to the third embodiment of the present invention includes a connection box body 500 and a connection box cover 600.

Here, the structure and shape of the connection case body 500 and the connection case cover 600 of the underground low-voltage connection case according to the third embodiment of the present invention are the same as those of the connection of the underground low-voltage connection case according to the first and second embodiments of the present invention Since the structure and shape of the housing bodies 100 and 300 and the connection housing covers 200 and 400 are the same or similar to each other, a more detailed description thereof will be given in the first and second embodiments of the present invention described above with reference to FIGS. Hereinafter, the description will be made with reference to an example.

6 and 7, the connection case cover 600 according to the third embodiment of the present invention includes a fixing protrusion 640, a protrusion hole 650, and a horizontal elastic spring 660.

The fixing protrusion 640 protrudes from at least one of a left side and a right side in the lower portion of the lid groove portion.

The protrusion holes 650 are formed to penetrate at least one of the left and right sides of the lid protrusion 610 from the lower part of the lid recess to receive the fixing protrusions 640 and to fix the fixing protrusions 640 in one of the left and right directions And limits the amount of movement. That is, the protrusion 640 is formed on the outer surface of the fixing protrusion 640, and the first hole engaging protrusion 651 is formed on the protrusion hole 650, And the detachment of the fixing protrusion 640 can be prevented. In addition, the first hole engaging jaw 651 and the second hole engaging jaw 652 can prevent the horizontal resilient spring 660 from deviating from the outside.

The horizontal elastic spring 660 is mounted on the outer side of the fixing protrusion 640 in the protrusion hole 650 to provide an elastic force to move the fixing protrusion 640 inward in the left and right direction.

Meanwhile, the handle leg 630 is formed in such a shape that its lower end gradually decreases in width, and contacts the one end of the fixing protrusion 640, moves upward or downward, and exposes the fixing protrusion 640 from the protrusion hole 650 Or inserted inward. Here, although the lower end of the handle 630 is formed in a peak shape, if necessary, the handle 630 may be applied to the shape of the lower end as it is or may be formed to have a certain area, and a vertical elastic spring or bolt tightening hole may be applied.

6, the fixing projections 640 are engaged with the handle legs 630 in a state in which the knob legs 630 are moved downward. In this case, Is inserted into at least one of the first fixing groove 510 provided on the main body 500 or the second fixing groove 10 provided on the external wall surface while being exposed from the projection hole 650 by being pushed by the inclined surface of the main body 500 So that the connection case cover 600 can be more firmly fixed to the main body 500 and can be firmly fixed in the ground.

7, the fixing protrusion 640 is returned to the inside and inserted into the protrusion hole 650 in a state in which the knob 630 is moved upward. In this state, It is possible to automatically detach from at least one of the first fixing groove 510 or the second fixing groove 10. That is, only by removing the hexagonal bolt, the handle bar 620 can be moved upward and the fixing protrusion 640 can be automatically released.

Thus, in the underground low-voltage connection box according to the fourth embodiment of the present invention, the cover can be more firmly fixed to the connection box body by the structure of the fixing protrusion. In repairing and repairing, Can be easily separated.

<Fourth Embodiment>

8 is a perspective view showing an underground low-voltage connection box according to a fourth embodiment of the present invention.

As shown in FIG. 8, the main body groove portion 710 of the connection case main body 700 according to the fourth embodiment of the present invention can be formed extending both on the front and rear sides of the top opening. Accordingly, the lid protrusion 810 in the connection case lid 800 can be formed to extend to both the front and rear sides corresponding to the main body recess 710.

Thus, in the underground low-voltage connection box according to the fourth embodiment of the present invention, the structure of the main body groove portion is extended from the upper portion of the underground low-pressure connection box main body to the front-rear direction, By expanding the structure of the lid protrusion also in the lid cover, the airtightness of the underground low-pressure connection lid can be improved more effectively, and the fixing structure can be further reinforced.

<Fifth Embodiment>

9 and 10 are views for explaining an underground low-voltage connection box according to a fifth embodiment of the present invention. 9 is a perspective view showing an underground low-voltage connection box according to a fifth embodiment of the present invention, and FIG. 10 is an exploded perspective view showing a separated state of the underground low-pressure connection box according to the fifth embodiment of the present invention.

As shown in FIGS. 9 and 10, in the connector housing 900 according to the fifth embodiment of the present invention, the main body groove 910 is formed so as to be shifted from the left and right ends toward the center in the left- It is possible. Accordingly, the lid protrusions 1010 of the connection case lid 1000 can be formed so as to be shifted from the left and right sides toward the center corresponding to the main body recess 910.

Thus, in the underground low-voltage connection box according to the fifth embodiment of the present invention, the structure of the body groove portion is slightly moved toward the center side from the upper portion of the underground low-voltage connection box main body, The structure of the lid protrusion can be further moved to the left and right sides of the lid protrusion 1010 by forming a separate body jaw 920 at both the left and right ends of the body groove, have.

Further, the bottom surface area of the connection hatch cover 1000 contacting the body jaw portion 920 is increased, thereby improving the airtightness of the underground low-pressure connection hatch more effectively and further reinforcing the fixing structure.

As described above, it is to be understood that the technical structure of the present invention can be embodied in other specific forms without departing from the spirit and essential characteristics of the present invention.

Therefore, it should be understood that the above-described embodiments are to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than the foregoing description, All changes or modifications that come within the scope of the present invention should be construed as being included within the scope of the present invention.

10: second fixing groove
100, 300, 500, 700, 900:
110, 310, 710, and 910:
200, 400, 600, 800, 1000:
210, 410, 610, 810, 1010:
220, 470: Hex bolt
230: Handle
320: bolt fastening groove
420: Handle bar
430, 630: handle leg
431:
440: cover lid
441: first cover groove
442: second cover groove
443:
444: Vertical elastic spring receiving space
450: Vertical elastic spring
460: Bolt tightening hole
471: Head of Hex Bolt
510: first fixing groove
640: Fixing projection
641: protruding jaws
650: projection hole
651: first hole jaw
652: second hole jaw
660: Horizontal elastic spring
920: Body jaw

Claims (6)

Wherein the upper opening is formed to be narrower than the left and right ends of the upper surface and further protruded upward so that a lower main body groove portion is formed on both left and right sides of the upper opening, A housing body; And
The flat plate is formed so as to cover the upper opening of the connection case main body. The width of the flat plate is equal to the width of the upper surface, and the lower left and right sides are further protruded downward A junction box lid on which a cover protrusion is formed;
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When the connection case lid is coupled to the connection case main body, the lid protrusion is closely attached to the main body groove portion to maintain the airtightness, thereby preventing the connection case lid from falling off,
The connection box lid includes:
A pair of handle bars formed in parallel in the front and rear direction on both left and right sides of the upper surface,
A knob leg extending downward at both front and rear ends of the handle bar and provided with the lid protrusion and having a locking protrusion formed along the lower end outer surface,
And is formed as a groove recessed downward from an upper surface of the connection case lid so as to be able to receive the handle bar and the handle leg. The upper end of the first lid groove is formed as a horizontally long first lid groove corresponding to the shape of the handle bar, And a lid groove portion formed on the inner surface of the upper end of the second lid groove so as to be engaged with the locking projection, wherein the lid groove portion is formed as a vertically long second lid groove corresponding to the shape of the handlebar,
The handle bar and the knob leg are received in the lid groove portion so that the upper surface of the handle bar is flush with the upper surface of the connection lid,
The handle bar and the handle leg are moved upward so as to be exposed from the upper surface of the connection case lid so that the engagement protrusion and the separation preventing jaw come into contact with each other, Is prevented from being disengaged from the connection box lid. delete delete The method according to claim 1,
The connection box lid includes:
And a vertical elastic spring provided below the knob leg to provide an elastic force directed upward with respect to the knob leg, wherein the lid groove section further extends below the length of the knob leg to receive the vertical elastic spring, A receiving space of the vertical elastic spring is formed,
A bolt fastening hole passing through the handle bar and the knob leg and penetrating from the bottom surface of the lid groove to the lower surface of the connection case lid on which the lid protruding portion is provided and a hexagonal bolt inserted and fastened to the bolt fastening hole, Wherein an upper portion of the bolt fastening hole is formed to match the head shape of the hexagonal bolt so as to accommodate the head of the hexagonal bolt,
A bolt fastening groove is formed on an upper surface of the body groove portion of the connection box body corresponding to the bolt fastening hole,
The hook bar and the knob leg are supported so as to be received in the cover groove by the fastening force of the hexagonal bolt,
The hook bar and the knob leg are automatically moved upward by the elastic force of the vertical resilient spring to release the hexagon bolt from the upper surface of the junction box lid, Wherein the low-voltage connecting box is connected to the ground. 5. The method of claim 4,
The connection box lid includes:
A fixing protrusion protruding from at least one of a left side and a right side in a lower portion of the cover groove portion,
A protrusion hole which penetrates at least one of left and right sides of the lid protrusion at a lower portion of the lid recess to accommodate the fixing protrusion and supports the fixing protrusion movably in one of the right and left directions,
And a horizontal elastic spring mounted on an outer side of the fixing protrusion in the protrusion hole to provide an elastic force to move the fixing protrusion inward in the left and right direction,
The handle leg is formed in such a shape that the lower end gradually decreases in width and contacts the one end of the fixing protrusion and moves upward or downward to expose or insert the fixing protrusion from the protrusion hole into the inside,
The fixing protrusion is normally pushed by the inclined surface of the handle leg in a state in which the handle leg is moved downward and is exposed from the protruding hole so as to be provided in the first fixing groove provided in the connection case main body, The first fixing groove and the second fixing groove,
When the connection box lid is lifted, the fixing protrusion is returned to the inside in a state in which the knob leg is moved upward, and at least one of the first fixing groove and the second fixing groove, Wherein the low-voltage connection box is separated from the low-voltage connection box. 6. The method of claim 5,
The main body groove portion of the connection box main body is formed so as to extend to both front and rear sides of the top opening,
Wherein the lid protrusions of the connection case lid are formed to extend to both front and rear sides corresponding to the main body groove portions.

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