KR20060008564A - The branch line connecting structure for a lowvoltage cable - Google Patents

Abstract

The present invention relates to a branch connection device for underground low voltage cables, and in particular, for handholes, by freely adjusting the angle in the direction of the cable, a plurality of branches can be freely realized, and the connection part of the angular displacement according to the plurality of branches is completely completed. Provides waterproof, maximizes insulation and does not require separate construction tools according to the branch provides a low-voltage line branch connection device that can maximize workability and convenience.

The low-voltage line branch connection device of the present invention has a plurality of housings 10 formed of EPDM and orthogonally penetrates the outlet 11 and the conductor fitting hole 12, and is connected to each outlet 11 of these housings. Both sides of the insulating material for closing the sleeve 20, the spacer 30 for supporting the gap between the housing according to the required number of the housing 10, and the conductor fitting 12 of the housing 10 located on the outermost side Conductor rods having a predetermined length through which the end caps 40 and 40 and the conductor fitting holes 12 are assembled through the end caps 40 and 40, respective connection sleeves 20, and spacers 30. 50) and a fixing nut 60 of insulating material which is screwed to both ends of the conductor rod.

Hand Hole, Housing, Connecting Sleeve, Spacer, End Cap, Conductor Rod, Fixing Nut

Description

The branch line connecting structure for a lowvoltage cable}

1 is a perspective view of a branched state of an embodiment of the present invention;

2 is an exploded perspective view of FIG. 1 showing a constituent member of the present invention;

3 is a cross-sectional view of the assembled state of the present invention,

4 is an exploded view of the constituent member of FIG. 3;

5 is an enlarged view of an excerpt “F” of FIG. 3;

Figure 6 is an enlarged view of the "G" portion of Figure 3,

Figure 7 is a binding process of the airtight protrusion ring between the housing which is a constituent member of the present invention,

8 is a process of assembling the cable to the sleeve and the adapter which is a component of the present invention,

Figure 9 is another embodiment of the end cap and the fixing nut of the constituent member of the present invention,

10-16 are branched views in accordance with use of the present invention,

10 is a "T" branch implementation,

11 is an "M" branch implementation view,

12 is a "3-Y" branch embodiment;

13 is a "4-Y" branch embodiment;

14 is a "5-Y" branch embodiment;

15 is a "3-L" branch embodiment;

16 is an "X" branch embodiment.

** Explanation of symbols for main parts of drawings **

10 housing 20 connection sleeve

30: spacer 40: end cap

50: conductor rod 55, 60: fixing nut

The present invention relates to a branch connection device for underground low voltage cables, and in particular, for handholes, by freely adjusting the angle in the direction of the cable, a plurality of branches can be freely realized, and the connection part of the angular displacement according to the plurality of branches is completely completed. It provides a low pressure line type branch connection device that can maximize the workability and convenience because the waterproof is provided to maximize the insulation and does not require a separate construction tool according to the branch.

In general, the low-voltage line type branch connection device is installed in a protective box (manhole, handhole) buried in the ground or underground, and is used for branch connection of a distribution line and termination of a customer. The technology is disclosed.

The manhole buried in the underground is an underground structure having an entrance in the middle or the end of the underground line for the construction, inspection, and other repair work of cable entry, withdrawal, connection, etc. On the other hand, a hand hole is the same as the manhole, but a relatively small underground structure cannot be entered by a person.

As a low pressure line type branch connection device for a conventional manhole, the present inventors assemble the cable, the insulating housing, and each member of the insulating housing in a prefabricated manner, so that the assembly and disassembly is quick and easy, and the installation work is excellent, and the fixing of each member after assembly is performed. Strong coupling, light weight is maximized by minimizing the volume of conductor contained inside the insulating housing,

Simplified structure ensures excellent safety thanks to solid connection structure even when the reduction of original feeling and external force (vibration) occurs.

No. 400875 is a low-voltage line branch connection device that can be connected to each other in the concept of bending (twisting) due to the construction of the cable. I have been registered.

However, the applicant's patent is for manholes, but it is possible to branch in both directions by a plurality of stacks, but it is impossible to freely adjust the angle in the direction of the cable, and it is impossible to apply in the case of construction in a narrow space such as a handhole.

In other words, when the construction space is narrow, such as handholes, the construction is possible in consideration of the number of cable lines, connection points, and site conditions. Perfect waterproofing and of course no special construction tools are required.

In addition, in terms of structural aspects, a conductor connection method capable of flowing a current should be implemented.

The present invention has been researched and developed in order to effectively solve the construction of the construction space in the handhole only by the human hand,

SUMMARY OF THE INVENTION An object of the present invention is to provide a low voltage line branch connection device that can be freely adjusted in the direction of a cable to be connected as a simple structure.

An object of the present invention is to provide a low-voltage line type branch connection device provided with a perfect waterproof and the inner conductor according to the angle adjustment in the direction of the cable.

An object of the present invention is to provide a low-voltage line type branch connection device having excellent workability because no separate construction tool is required according to the branch connection of a plurality of cables.

The low-voltage line branch connection device of the present invention includes a plurality of housings formed by EPDM through orthogonal passages of the outlet and the conductor fitting holes, connection sleeves fitted to each outlet of these housings, and the distance between the housings according to the required number of the housings. The end caps of the both sides of the insulating material closing the conductor fitting hole of the housing located on the outermost side, and the end caps, the connecting sleeve, and the spacers of a predetermined length through the conductor fitting hole. It is characterized by consisting of a conductor bar and a fixing nut of insulating material screwed to both ends of the conductor bar.

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

1 is an external perspective view of each housing angularly displaced by a cable connected to a branch according to an embodiment of the present invention, Figure 2 is an exploded perspective view exploded constituent members of the present invention, Figure 3 is Assembly state cross-sectional view, Figure 4 is an exploded view taken in cross-sectional view of the constituent member of the present invention, referring to this,

The low-voltage line branch connection device of the present invention comprises a plurality of housings 10,

A connecting sleeve 20 for connecting the respective cables 100 assembled and connected to these housings,

A spacer 30 interposed between the housing 10 and the housing 10 according to the quantity of the cable 100 branched to support a gap and an electrical connection;

End cap 40 of the insulating material to close the exposed ends of the outermost housing 10, 10 by arranging and connecting the housing 10 and the housing 10 continuously,

The housing 10 to be connected to the arrangement and the connecting sleeve 20 and the spacer 30 are respectively installed in these housings through the connection and serves as an electrical connection and the support shaft 20 on both sides A conductive rod 50 having a thread,

Fixing nuts 60 and 60 of insulating material for binding the housing 10 and the spacers 30 and both end caps 40 and 40 to one unit by screw assembly at both ends of the conductor rod,

The inner peripheral surface of the inlet 11 of the outlet and the outer peripheral surface of the cable 100 is fitted into the component of the adapter 70 of the insulating rubber material for sealing the inside of the outlet (11).

The housing 10 is formed of EPDM and has a lead outlet 110 in which the connection sleeve 20 is crimped and connected to the lead wire 110 of the cable 100 that is connected to the conductor rod 50. ) Penetrates the conductor fitting hole 12 through which the appearance is made of "T" shape.

In this case, as shown in FIG. 7, the housing 10 has a plurality of projection rings 13a and a single projection ring positioned between each of the projection rings at both ends of the conductor fitting hole 12. 13b protrudes so that the airtightness of the connecting portion is maintained by close contact with each other when the housings 10 and 10 are assembled.

In addition, as shown in Figure 5, the outlet 11 is a projection ring 14 protrudes on the inner peripheral surface of the inlet side, a plurality of annular projections protrude at a predetermined interval on the outer peripheral surface of the band groove 15 is Is formed.

The connection sleeve 20 has a connection hole 21 into which the conductor wire 110 of the cable 100 is inserted and compressed at one side thereof, and the other end thereof is the same as the circumferential surface of the conductor fitting hole 12. A connection hole 22 formed in a round surface and through which the conductive rod 50 is connected in a direction orthogonal to the connection hole 21 penetrates.

At this time, when the connection hole 22 of the connection sleeve 20 is fitted through the outlet 11 of the housing 10, the rounded surface of the tip is in close contact with the inner peripheral surface of the conductor fitting hole 12. It is located on the center line in the front, both the front side where the connection hole 22 is formed is chamfered to the connection area and the spacer 30 and the end cap 40 which is built through the conductor fitting hole 12 It is enough to have.

The spacer 30 is a metal conductor that penetrates the connection hole 31 through which the conductive rod 50 is connected. The spacer 30 is connected to the connection sleeve 20 according to the continuous connection of the housing 10 and the housing 10. The distance between the connecting sleeve 20 and the chamfered portion of the connecting sleeve 20 is made.

The end cap 40 and the fixing nut 60 are formed of a plastic insulating resin material having excellent waterproofness, and the end cap 40 is fitted into the conductor fitting hole 12 of the housing 10 to provide the connection sleeve ( 20. The pressing protrusion 42 having a distance in close contact with the chamfered portion and the flange portion 43 closing the end face of the thickness forming the conductor fitting hole 12 are integrally molded to form the conductor rod 50 therein. The through hole 41 penetrates through was formed.

At this time, the O-ring groove 44 is provided on the front surface of the flange portion 43 to assemble the O-ring 45.

In addition, as shown in Figure 9, it is possible to use a fixing nut 55 having the end cap 40 integrally, this embodiment is the molding of the O-ring groove 44 by the separate molding of the end cap 40 There is no need to use the O-ring 45 is economical.

The adapter 70 is inserted into the outer circumferential surface of the cable 100 as an insulating rubber material, a plurality of crimping projection ring 72 is protruded at a predetermined interval through the cable hole 71, the outer peripheral surface of the outlet ( 11 is a ring groove 73 is engaged with the projection ring 14 of the recessed.

As shown in FIG. 8, the adapter 70 is inserted into the outer circumferential surface of each cable 100 to be connected through the cable hole 71, and then the connection hole 21 of the connection sleeve 20 is provided. Crimp and connect the conductor wire 110 of the cable 100,

The front end of the connecting sleeve 20 is inserted in close contact with the inner circumferential surface of the conductor fitting hole 12 through the outlet 11 of the housing 10, and the adapter 70 is pushed toward the inlet side of the outlet 11. Will be inserted.

At this time, the adapter 70 is a conventional hose band (H / H) in the band groove 15 in a state in which the ring groove (73) concave on the outer circumferential surface is inserted to be engaged with the protrusion ring 14 of the outlet (11) By tightening the outer circumferential surface using B), the projection ring 14 of the outlet 11 and the annular groove 73 of the adapter 70 are sealed by compression bonding,

The cable 100 is the outer circumferential surface is crimp-sealed by a plurality of crimping projection ring 72 protruding into the cable hole 71 of the adapter 70 to the connection sleeve 20 and the outlet 11 The cable 100 portion introduced through is completely sealed to the outside.

In this way, each cable 100 is connected to each housing 10 to which the cable is connected to bind a single unit.

That is, the conductor rod 50 is inserted through the connection hole 22 of the connection sleeve 20 to which the cable 10 is connected, and the through hole 41 of the end cap 40 is inserted from one side of the conductor. The compression protrusion 42 is inserted into the conductor fitting hole 12 by being inserted into the rod 50, and then the fixing nut 60 is screwed at the end of the conductor rod 50.

In this state, the spacer 30 is inserted into the connection hole 31 from the other end of the conductor rod 50, and the housing 10 to which the other cable 100 is connected is connected to the connection sleeve 20 as described above. After inserting the other spacer 30 to the conductor rod 50 through the hole 22, the cable 100 which is branched in such a manner that the housing 10 is connected to another cable 100 again as described above. ) Will be assembled sequentially by fitting the connected housing 10.

In this state, the other end cap 40 is inserted into the conductive rod 50 again in the outermost housing 10, and then screwed into the conductive rod 50 with another fixing nut 60.

In the state in which each housing 10 is positioned in the direction of the branch-connected cable 100, the fixing nuts 60 and 60 on both sides are screwed using a simple fastening tool such as a spanner and a wrench to the respective housings ( 10) is fixed in the state angularly displaced to complete the branch connection.

The branch connection of the present invention includes a "T" branch as shown in FIG. 10, an "M" branch as shown in FIG. 11, a "3-Y" branch as shown in FIG. 12, a "4-Y" branch as shown in FIG. Various branches such as the same "5-Y" branch, the "3-L" branch as shown in FIG. 15, and the "X" branch as shown in FIG. 16 are possible.

In particular, in the present invention, the conductor fitting hole 12 of the housing 10 is mutually engaged with the protrusion rings 13a and 13b integrally formed on the end face and the flange portions of both end caps 40 and 40. Sealed by close contact with the 43, the outlet 11 is sealed by the binding of the adapter 70 of the insulating rubber material, the connection sleeve 20, the spacer 30, the conductor rod of the conductor inserted and connected therein ( 50 and complete waterproofing of the conductive wire 110 of the cable 100 inserted therein is realized.

As described above, the present invention realizes a perfect sealing of the inside of the housings 10 to be connected while being connected in the direction of each of the plurality of branched cables 100.

The present invention is not limited to the implementation in the protective box, such as for the handhole, it will be found that the implementation in the protective box, such as the manhole.

As described in detail above, in the present invention, when connecting a plurality of branch cables, the branch connection can be freely adjusted by the angle adjustment in the direction of the cable, and a special work tool is not required according to construction to maximize the convenience of construction work. The reliability of the device is ensured by the effect, maximizing the reliability of the product by the perfect waterproofing between the housing and the housing to which each cable is connected, as well as the multiple cable branches.

Claims (9)

In constructing a low voltage line branch connection device for connecting a plurality of branch cables 100, A plurality of EPDM housings 10 orthogonally penetrating the outlet 11 and the conductor fitting hole 12; Respective connecting sleeves 20 which connect and assemble the cable 100 through respective outlets 11 of these housings, A spacer (30) interposed between the housing (10) and the housing (10) connecting and connecting the branched cable (100) to support a gap and an electrical connection; End caps 40 and 40 of both insulating materials for closing the conductor fittings 12 and 12 of the housings 10 and 10 located at the outermost sides; The housing 10 to be connected to the arrangement and the connecting sleeve 20 and the spacer 30 are respectively installed in these housings through the connection and serves as an electrical connection and the support shaft 20 on both sides A conductive rod 50 having a thread, Fixing nuts 60 and 60 of insulating material for binding the housing 10 and the spacers 30 and both end caps 40 and 40 to one unit by screw assembly at both ends of the conductor rod, Low pressure line type branch connection device, characterized in that made of an adapter (70) of insulating rubber material which is fitted to the inner peripheral surface of the inlet of the outlet 11 and the outer peripheral surface of the cable (100) to seal the inside of the outlet (11). The method of claim 1, The plurality of housings 10 are connected to the connection sleeve 20 assembled with the outlet 11 by tightening the screw of the fixing nut 60 in a state in which the plurality of housings 10 are different from each other in the direction of the outlet 11. Low-voltage line branch connection device, characterized in that the angular branching of the cable 100 is made. The method of claim 1, The housing 10 has a plurality of projection rings 13a and a single projection ring 13b positioned between the projection rings 13 at each side end of the conductor fitting hole 12 to protrude from the housing 10. The low pressure line type branch connection device, characterized in that the air tightness of the connection portion is maintained by close contact with each other during assembly. The method of claim 1, The outlet 11 has a low-pressure line-type branch, characterized in that the projection ring 14 is protruded on the inner peripheral surface of the inlet side, a plurality of annular projections protrude at a predetermined interval on the outer peripheral surface is formed with a band groove (15) Connection device. The method of claim 1, The connection sleeve 20 has a connection hole 21 into which the conductive wire 110 of the cable 100 is inserted and compressed at one side thereof, and a connection hole 22 through which the conductive rod 50 is connected to the other side thereof. ) Is penetrated, and the connection hole 22 coincides with the center line of the conductor fitting hole 12 when assembling through the outlet 11, and both front sides thereof are chamfered to form the conductor fitting hole 12. Low-voltage line type branch connection device, characterized in that made to ensure a connection area with the spacer 30 and the end cap 40 is built through. The method of claim 1, The end cap 40 is assembled with the through-hole 41 in the conductor rod 50, it is fitted in the conductor fitting hole 12, the pressing projection having a distance to be in close contact with the chamfered portion of the connection sleeve 20 (42) and the flange portion 43 closing the end face of the conductor fitting hole 12 is integrally formed, by the O-ring 45 of the O-ring groove 44 formed on the front surface of the flange portion 43 The connection part of the fixing nut 60 is kept airtight, and the connection part of the housing 10 is made to maintain the airtightness by being in close contact with the protruding rings 13a and 13b. Device. The method according to claim 1 or 5, The fixing nut (60) is a low-voltage line branch connection device, characterized in that the end cap 40 is formed of a fixed nut 55 integrally molded. The method of claim 1, The adapter 70 is inserted into the cable hole 71 protruding a plurality of the pressing projection ring 72 on the outer circumferential surface of the cable 100 as an insulating rubber material, the outlet port 11 on the outer circumferential surface The low-pressure line-type branch connection device, characterized in that the projection ring 14 is coupled to the annular groove 73 is formed. The method according to claim 1 or 4 or 8, The adapter 70 is coupled to the protruding ring 14 by a conventional hose band that is coupled to the protruding ring 14 of the outlet 11 and the ring groove 73 is fastened in the band groove 15. The annular groove 73 is sealed by compression bonding, The cable 100 is formed such that the outer circumferential surface is press-sealed by a plurality of crimping projection rings 72 protruding into the cable hole 71 of the adapter 70 to maintain the airtightness of the outlet 11. Low-voltage line branch connection device, characterized in that.

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