KR101617201B1

KR101617201B1 - Busbar connector for Apartment House Switchboard

Info

Publication number: KR101617201B1
Application number: KR1020160034774A
Authority: KR
Inventors: 엄상영
Original assignee: (주)하림기술단
Priority date: 2016-03-23
Filing date: 2016-03-23
Publication date: 2016-05-03

Abstract

The present invention relates to a booth bar connecting device for a house housing switchboard, which can be connected to a connecting portion of a bus bar and a charger bus bar without machining a fastening hole, wherein the intersection of the charger booth bar (20) A lower pressure plate 30 which is in close contact with a bottom surface of the bus bar bar 22 at a point; A tension bar 32 which is formed perpendicular to the edge of the lower platen 30 and which is in close contact with the sides of the charger bus bar 20 and the bus bar bar 22; An engagement groove (34) formed in an inner edge of the tension bar (32); An upper pressure plate (40) positioned above the intersection point of the charger bus bar (20) and the bus bar bar (22) and having a tapped hole (42) penetrating up and down; A wing portion 44 which is circularly arranged on the outer peripheral surface of the upper pressure plate 40 and enters between the tension bar 32 and inserted into the latch groove 34 by rotation of the upper pressure plate 40; A rotation preventing groove 46 formed on the upper surface of the wing portion 44 and engaged with the tension bar 32 by the upward movement of the upper pressure plate 40; A steel plate 50 positioned between the upper pressure plate 40 and the charger booth bar 20 and brought into close contact with the upper surface of the charter booth bar 20; An elastic catching piece 52 bent vertically upward from the edge of the steel plate 50; A latching hole 48 formed in the upper pressing plate 40 and into which the elastic latching piece 52 is inserted and hooked; A lift spring 60 installed between the upper pressure plate 40 and the steel plate 50 and pushing the upper pressure plate 40 and the steel plate 50 in opposite directions; And a crimp bolt 70 coupled to the tapped hole 42 and exerting a force in a direction in which the charger bus bar 20 and the bus bar bar 22 are in close contact with each other.

Description

{Busbar connector for Apartment House Switchboard}

More particularly, the present invention relates to a bus bar connecting apparatus for a bus bar and a bus bar connecting a bus bar and a charger bus bar, The present invention relates to a bus bar connecting device for a multi-house switchboard.

In general, the switchboard installed in the apartment house is provided with a parking terminal and a plurality of auxiliary circuit breakers on a base plate made of an insulator so as to distribute power supplied from the outside to each place in the house, and at the same time, have.

A parking terminal and a plurality of auxiliary circuit breakers provided in the switchboard are connected by a bus-bar. In case of a three-phase fault, a plurality of charger busbars are crossed and connected to four busbars, An auxiliary circuit breaker is connected to each charger busbar.

FIG. 1 shows a cross-shaped connecting portion of a conventional bus bar. As shown in FIG. 1, a connecting portion 13 is formed downwardly downwardly in the middle of a charger bus bar 12, 14 are formed in the connecting portion 13 of the charger bus bar 12. The bolts 16 and the nuts 18 inserted into the fastening holes 11, The booth bar 10 and the charger booth bar 12 are mutually coupled.

The reason why the connection portion 13 bent downward in the charger bus bar 12 is provided is to insulate the charger bus bar 12 from being brought into contact with other bus bar bars (not shown).

However, since the bus bar connecting device that is engaged by the bolts 16 and the nuts 18 in this way must hold the nut 18 with a tool such as a spanner during the tightening of the bolt 16, There is a problem that the working time is significantly delayed due to inconvenience.

The portions corresponding to the areas of the fastening holes 11 and 14 formed in the bus bar 10 and the booster bar 12 for insertion of the bolts 16 disappear from the contact area of the connecting portions 13 The cross-sectional area of the portion where the fastening holes 11 and 14 are formed is reduced. Therefore, the cross-sectional area of the bus bar bars 10 and 12 of the charger bars 11 and 14 is reduced at this portion, The strength was greatly reduced, and when it was careless for a while, a problem such as bending easily occurred.

Korean Patent Registration No. 10-0608891 (hereinafter referred to as "Prior Art 1") has been proposed in order to solve the problems of the conventional bus bar connecting device.

In this prior art 1, a plurality of partial cut-out grooves are formed along the longitudinal direction of the pipe-shaped bus bar bar, and the bar inserted in the center of the bus bar bar is inserted into the cut- Is moved in the axial direction by the threaded portion, and the charger booth bar is fixed to the busbar bar by the inner retaining ring.

However, while the prior art 1 has the advantage that the charger booster bar can be easily fixed or loosened by turning the threaded portion, the plurality of charger booth bars can not be separated individually, and the charger has a fatal disadvantage that it can only be united or released all at once.

In other words, since the switchboard is normally constructed vertically to the wall surface, when the plurality of the charger busbars are released at a time in the prior art 1, they are separated by being lowered, so that the installation work becomes very difficult.

In addition, in the prior art 1, since the pressing portion of the bus bar bar and the charger bus bar is merely a cross section of the cut groove formed in the bus bar bar, there is a limit to increase the contact area, and there is a limit in improving the energizing ability.

On the other hand, Korean Patent Registration No. 10-0607102 (hereinafter referred to as "Prior Art 2") has been proposed in order to solve the problems of a conventional bus bar coupling structure.

In the prior art 2, when the cam lever is rotated 90 degrees in a state in which a string-shaped charger bus bar in the form of a cross is placed on the upper side of the trapezoidal shaped bus bar bar, and then it is laid on one side, And the charger bus bar is brought into close contact with the bus bar bar while the rod is pulled by the cam lever.

However, the conventional art 2 has a problem in that the construction is complicated due to its complicated structure, and the construction cost is greatly increased. The strength of the joint portion can not be still improved by the cut portion formed in the bus bar bar and the elongated hole formed in the charger bus bar there was.

Korean Patent Registration No. 10-0608891 Korean Patent Registration No. 10-0607102

SUMMARY OF THE INVENTION The present invention has been made in order to solve the above problems, and it is an object of the present invention to maximize a contact area between a bus bar and a charger bus bar provided on an ASSEMBLY, thereby improving energizing capability, And to provide a bus bar connecting device for a multi-house housing switchboard capable of improving the strength of a connecting portion.

In order to accomplish the object of the present invention, there is provided a bus bar connecting device for a multi-house switchboard, comprising: a lower pressing plate which is in close contact with a bottom surface of the bus bar bar at an intersection of a charger bus bar and a bus bar bus bar; A tension bar formed perpendicularly to an edge of the lower platen, the tension bar being in close contact with a side surface of the charger bus bar and the bus bar bar; An engaging groove formed in an inner edge of the tension bar; An upper pressure plate positioned above the intersection of the charitable booth bar and the bus bar bar and having a tapped hole penetrating vertically; A wing portion arranged in a circular shape on an outer circumferential surface of the upper pressing plate and inserted between the tension bars and inserted into the engaging groove by rotation of the upper pressing plate; A rotation preventing groove formed on an upper surface of the wing portion and hooked to the tension bar by a rise of the upper pressure plate; A steel plate positioned between the upper platen and the charger booth bar and brought into close contact with the upper surface of the charter booth bar; An elastic catching part vertically bent upward from an edge of the steel plate; A latching hole formed in the upper platen and inserted and engaged with the elastic latching piece; A lift spring installed between the upper platen and the steel plate and pushing the upper platen and the steel plate in opposite directions; And a compression bolt coupled to the tapped hole and exerting a force in a direction in which the charger booth bar and the bus bar bar are in close contact with each other.

As described above, since the present invention is configured to connect the charger bus bar 20 and the bus charger bar 22 without perforating the hole, the contact area between the charger bus bar 20 and the bus charger bar 22 becomes larger Compared with the case of perforating the metal plate.

The lower pressing plate 30 is inserted into the lower portion of the bus bar bar 22 and then the upper pressing plate 40 is rotated to be attached to the tension bar 32. When the pressing bolts 70 are tightened, 22 can be easily connected and the lower pressing plate 30 can be rotated even when the pressing bolt 70 is rotated by the tension bar 32 hung on the charger bus bar 20 and the bus bar bar 22 There is an effect that the connection operation can be performed conveniently and quickly.

Since the rotation preventing groove 46 engaged with the tension bar 32 is formed on the blade portion 44, the upper pressing plate 40 is prevented from rotating together with the pressing bolt 70 when the pressing bolt 70 is rotated So that the fastening operation can be facilitated.

The upper pressing plate 40 is pressed and rotated so that the wing portion 44 is hooked on the engaging groove 34 formed in the tension bar 32. When the external force is removed from the upper pressing plate 40, The upper pressure plate 40 is automatically raised by the repulsive force so that the tension bar 32 is caught in the rotation preventing groove 46 formed in the wing portion 44,

Since the tension bar 32 is brought into contact with the side surfaces of the main and sub line bars 22 and 22 when the main line bar bar 20 is crossed over the main line bar bar 22, And the charger booth bar 20 are arranged in a cross shape.

Furthermore, since the pressure applied from the compression bolt 70 is spread widely through the steel plate 50 to be transmitted to the charger booth bar 20, Can be expected to have an effect of allowing the pressure to be closely adhered by a more even pressure.

1 is an exploded perspective view showing a connection of a conventional bus bar;
2 is a perspective view
3 is an exploded perspective view
Fig. 4 is an exploded perspective view of the bottom side of Fig.
FIG. 5 is a plan view
Fig. 6 is a plan view showing the wing portion caught by the tension bar from the state of Fig. 5 by rotation of the upper platen;
Figure 7 is a cross-
8 is a sectional view taken along the line A-A 'in Fig. 6
9 is a sectional view taken along line B-B '

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

As shown in FIGS. 2 to 9, the present invention includes a lower pressing plate 30 which is in close contact with the bottom surface of the bus bar bar 22 at the intersection of the charger booth bar 20 and the bus bar bar 22; A tension bar 32 formed perpendicularly to an edge of the lower platen 30 and closely attached to the sides of the charger bus bar 20 and the bus bar bar 22; And an engagement groove (34) formed in the inner edge of the tension bar (32).

In this case, the number of the tensile bars 32 corresponds to the four corners of the lower pressing plate 30, and the number of the tensile bars 32 corresponds to each of the four corners of the lower pressing plate 30. For example, the lower pressing plate 30 may be formed to have a regular angle, A total of four can be formed.

The tension bar 32 may be formed to have a fan-shaped cross section, for example, in a plan view, and the inner surface of the tension bar 32 may be formed at a right angle, ) In a cross shape.

The present invention is characterized in that the upper pressure plate (40) is positioned above the intersection point of the charger bus bar (20) and the bus bar bar (22) and has a tapped hole (42) penetrating up and down; A wing portion 44 that is circularly arranged on the outer circumferential surface of the upper pressure plate 40 and enters between the tension bar 32 and inserted into the engagement groove 34 by rotation of the upper pressure plate 40, ; And a rotation preventing groove 46 formed on the upper surface of the wing portion 44 and engaged with the tension bar 32 by the upward movement of the upper pressure plate 40.

The vertical width of the engagement groove 34 is formed to be slightly larger than the thickness of the wing portion 44 so that the wing portion 44 can smoothly enter the engagement groove 34. 7, when the upper pressing plate 40 is pressed downward and brought into close contact with the steel plate 50, the wing portions 44 are positioned inside the engaging grooves 34, so that the upper pressing plate 40 The wing portion 44 and the tension bar 32 do not interfere with each other.

5 and 6, the wings 44 may be disposed on the outer circumferential surface of the upper pressing plate 40 so as to form a total of four angles at an angle of 90 degrees with respect to each other.

The present invention is characterized in that a steel plate (50) positioned between the upper platen (40) and the charger booth bar (20) and brought into close contact with the upper surface of the charter booth bar (20); An elastic catching piece 52 bent vertically upward from an edge of the steel plate 50; And a retaining hole 48 formed in the upper retaining plate 40 for retaining the elastic retaining piece 52 inserted therein.

3 and 4, the steel plate 50 may be formed in a square shape using a spring steel plate made of metal, and the elastic retaining pieces 52 may be formed integrally with the steel plate 50, .

The elastic retaining pieces 52 may have a total of four elastic retaining pieces 52 corresponding to four corners of the steel plate 50. The elastic retaining pieces 52 may be bent at right angles to form the upper surface of the upper retaining plate 40, .

The present invention is characterized in that a lifting spring (60) installed between the upper pressure plate (40) and the steel plate (50) and pushing the upper pressure plate (40) and the steel plate (50) in opposite directions to each other; And a crimping bolt 70 coupled to the tapped hole 42 and exerting a force in a direction in which the charger bus bar 20 and the bus bar bar 22 are in close contact with each other.

The upward spring 60 may be formed of, for example, a compression coil spring formed by spirally winding a spring steel wire.

The spring insertion portion 41 for inserting the lifting spring 60 may be formed at the center of the bottom surface of the upper pressing plate 40 to prevent the lifting spring 60 from being deviated in the lateral direction.

The upper press plate 40, the steel plate 50, the upward spring 60, and the crimp bolts 70 can be assembled and assembled in advance at the assembly site, and then transported to the site.

When the steel plate 50 is assembled to the upper platen 40, the elastic spring 60 formed on the steel plate 50 in a state where the upward spring 60 is positioned between the upper platen 40 and the steel plate 50, The upper end of the elastic engagement piece 52 is slightly bent so as to gather all over toward the center and then the elastic engagement piece 52 bent into the engagement hole 48 formed in the charger bus bar 20 is inserted, The elastic retaining pieces 52 are restored to the outside by the elastic restoring force of the elastic retaining pieces 52, and the assembly is completed while being caught by the upper pressing plate 40. [

At this time, the lift spring 60 is not separated because it is positioned between the upper pressure plate 40 and the steel plate 50. Then, when the compression bolt 70 is coupled to the tab hole 42 formed in the upper pressure plate 40, the assembly is completed.

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

As shown in FIGS. 2 to 9, when the lower booster bar 30 is closely contacted with the lower surface of the bus bar bar 22 and the bus bar bar 22 is sandwiched between the tension bar 32, Are in close contact with both side surfaces of the bus bar bar 22.

The charger bus bar 20 is brought into close contact with the upper surface of the bus bar bar 22 when the charger bus bar 20 is inserted into the tension bar 32 while intersecting with the bus bar bar 22 in a cross shape.

As shown in FIG. 5, when the upper pressing plate 40 is positioned on the upper side of the charger booth bar 20 so that the wing portions 44 formed on the upper pressing plate 40 are positioned between the tension bars 32 The steel plate 50 preliminarily assembled to the upper pressure plate 40 is brought into close contact with the upper surface of the charger booth bar 20.

When the upper pressing plate 40 is then pressed downward, the wing portion 44 coincides with the engaging groove 34. At this time, as shown in FIGS. 6 and 7, in a state in which the upper pressing plate 40 is continuously pressed When the upper pressure plate 40 is rotated by 45 degrees, the wing portions 44 enter and engage with the engaging grooves 34 formed in the tension bar 32.

The upper pressure plate 40 is automatically raised by the repulsive force of the upward spring 60 so that the rotation prevention groove 40 formed in the wing portion 44 as shown in Fig. The upper pressing plate 40 can not be rotated unless the upper pressing plate 40 is pressed again while a part of the tension bar 32 is inserted into the pressing plate 46. [

At this time, when the compression bolt 70 is rotated and lowered, the charger booth bar 20 is lowered while the pressure is transmitted to the steel plate 50, and the upper pressure plate 40 and the compression bolt 70 are raised together by the repulsive force , The lower pressure plate 30 and the bus bar bar 22 are raised by the wing portion 44 and the tension bar 32.

That is, the charger bus bar 20 is lowered, and the bus bar bar 22 is raised and tightly contacted with each other more strongly as the crimping bolts 70 are tightened so that the charger bus bar 20 and the bus bar bar 22 Since no holes are formed at the intersection points, the cross-sectional area through which the current can flow is increased, so that not only the current carrying capability is improved but also the stiffness is improved.

At this time, the steel plate 50 spreads the pressure applied from the crimping bolts 70 evenly and transmits the pressure to the charger bus bar 20. When the crimping bolt 70 is rotated, The upper pressure plate 40 is prevented from turning along the compression bolt 70 because the upper pressure plate 40 is caught by the tension bar 32 and remains stopped by the rotation preventing groove 46. [

On the other hand, when separating the charger bus bar 20 and the bus bar bar 22 from each other, the pressing bolt 70 is loosened first, and the upper pressing plate 40 is rotated downward by 45 degrees The upper booster bar 40 and the lower booster bar 30 are separated from each other so that the charger booth bar 20 and the bus bar bar 22 can be separated from each other.

20: Charity booth bar 22: Bus booth bar
30: lower platen 32: tension bar
34: latching groove 40: upper pressure plate
41: spring insertion portion 42: tab hole
44: wing portion 46: anti-rotation groove
48: Retaining hole 50: Steel plate
52: elastic catching piece 60: rising spring
70: Crimping bolts

Claims

A lower pressing plate 30 which is in close contact with the bottom surface of the bus bar bar 22 at the intersection of the charger bus bar 20 and the bus bar bar 22;
A tension bar 32 formed perpendicularly to an edge of the lower platen 30 and closely attached to the sides of the charger bus bar 20 and the bus bar bar 22;
An engagement groove (34) formed at an inner edge of the tension bar (32);
An upper pressure plate (40) positioned above the intersection point of the charger bus bar (20) and the bus bar bar (22) and having a tapped hole (42) penetrating up and down;
A wing portion 44 that is circularly arranged on the outer circumferential surface of the upper pressure plate 40 and enters between the tension bar 32 and inserted into the engagement groove 34 by rotation of the upper pressure plate 40, ;
A rotation preventing groove 46 formed on an upper surface of the wing portion 44 and engaged with the tension bar 32 by the upward movement of the upper pressure plate 40;
A steel plate 50 positioned between the upper platen 40 and the charger booth bar 20 and closely attached to the upper surface of the charter booth bar 20;
An elastic catching piece 52 bent vertically upward from an edge of the steel plate 50;
A retaining hole 48 formed in the upper pressing plate 40 for receiving the elastic retaining piece 52 inserted therein;
A lift spring 60 installed between the upper pressure plate 40 and the steel plate 50 and pushing the upper pressure plate 40 and the steel plate 50 in opposite directions;
A crimping bolt 70 coupled to the tapped hole 42 and exerting a force in a direction in which the charger bus bar 20 and the bus bar bar 22 are in close contact with each other;
A busbar connection device for a residential switchboard comprising a housing.