KR20190066343A - Connecting elements in balustrade - Google Patents

Abstract

The present invention relates to a guardrail connection structure which conveniently connects a plurality of guardrail units without separate welding work during guardrail connection construction at a stairway site where guardrails units are connected, and has an improved structure to connect guardrails units horizontally or in an inclination angle. The guardrail connection structure comprises: a left and a right support hole drilled to a left and a right side on an upper portion of a middle guardrail post with a hollow space vertically erected on a stairway to communicate with the hollow space; a support bracket having a left and a right support unit inserted into the hollow space through the left and the right support hole, and bent downwards from a left and a right side of an upper surface thereof to connect one ends of first upper and lower guardrail bars to one end thereof and connect second upper and lower guardrail bars to the other end thereof; an upper guardrail post which is erected on an upper portion of the stairway, has a hollow space, allows third upper and lower guardrail bars having an angle different from the second upper and lower guardrail bars to be connected thereto, and has a left and a right connection hole communicating with the hollow space; a first connection bracket having a first bent unit bent downwards and formed on a left and a right side of an upper surface thereof to connect ends of the third upper and lower guardrail bars to the right connection hole formed on an upper and a lower portion of the upper guardrail post; a second connection bracket having a second bent unit bent downwards and formed on a left and a right side of an upper surface thereof to be coupled to enclose an outer side of the first bent unit to connect ends of the second upper and lower guardrail bars to the left connection hole formed on an upper and a lower portion of the upper guardrail post; and a connection means to rotatably connect portions of one sides of the first and the second connection bracket facing each other.

Description

{CONNECTING ELEMENTS IN BALUSTRADE}

The present invention relates to a parapet connecting structure, and more particularly, to a parapet connecting structure in which a plurality of railing units are connected to each other, And more particularly to an improved railing connecting structure.

Conventionally, a horizontal bar is used between a support and a support, and the horizontal bar is formed with an upper horizontal bar and a lower horizontal bar, and a plurality of vertical bars are generally vertically coupled between the upper and lower horizontal bars.

In the case of the railing combined as described above, a base plate is formed at the lower part of the support and the support to prevent the support from moving by fixing the base plate to the ground first. In the state where the support is fixed to the ground, In the course of joining the bars to the two struts, the distance between the struts and the struts and the length of the horizontal bars must be the same so that the railing is correctly installed.

When the rail is installed as described above, the length of the horizontal bar to be assembled is precisely cut according to the distance between the pillar and the pillar installed in the field, and the length of the horizontal bar is longer than the distance between the pillar and the pillar However, when the length of the horizontal bar is short, the bolt that is bolted to the support between the support and the support is exposed to the outside, which is not good for the appearance, and the horizontal bar is not closely contacted with the support, And the lifetime of the railing is shortened.

As a prior art related to the existing rail connection structure, it is possible to connect the support rods of the fence constituting the railing of the stairway, as disclosed in the Korean Registered Utility Shinan Public Relations Office No. 0132118, "Rail Connection Device for Building Stairs" (registered on September 23, 1998) The lower end of the supporting rod is connected to the upper end of the supporting rod provided at both ends of the fence so as to be freely inclined so as to match the inclination angle formed by the supporting bar at a predetermined height, And a bolt hole is formed in the connection insertion portion of the fixing member so that a U-shaped hook can be fixed by a nut.

Another prior art related to the conventional rail connection structure is disclosed in Korean Registered Utility Model Publication No. 0129098 entitled " Rail Link Structure "(registered on August 13, 1998) The decorating hole is divided into a hemispherical decorative cap and a transverse pipe connecting body. The decorating protrusion is formed at an upper center portion and the protruding rim is formed at a lower circumferential portion. The transverse pipe connecting tube has an insertion portion, an inward bending portion for connecting a transverse pipe, And the insertion tube is sequentially formed so that the upper insertion portion of the transverse tube connecting tube is inserted into the protruding rim of the decorative cap and then the end of the protruding rim is bent inward to form a decorative opening. In the inward bending portion, So that the connector can be connected and fixed.

And the horizontal transverse pipe connecting portion and the inclined transverse pipe connecting portion are welded to the inward bending portion of the main pipe.

Since the conventional rail connection structure requires the inward curved portion to reduce the apparent projecting portion and weld the horizontal horizontal pipe connecting portion and the inclined lateral pipe connecting portion in the inward curved portion of the main pipe in the field, .

Korea Registered Utility Model Office 0132118 "Rail Connection Device for Building Stairs" (Registered on September 23, 1998) Korea Registered Utility Model Office No. 0129098 "Rail Link Structure" (Registered on August 13, 1998)

SUMMARY OF THE INVENTION The present invention has been made in view of the above-described problems, and an object of the present invention is to provide a railway connecting apparatus, And an object of the present invention is to provide a rail connecting structure improved in structure so as to be connectable at an inclination angle.

To achieve the above object, according to the present invention, there is provided a balustrade elevator comprising a left and a right support hole formed at an upper portion of a middle railing pillar standing upright in a stairway and having a hollow and pierced to left and right sides to communicate with the hollow, And a left and a right support portion bent downward on both sides of the upper surface so as to connect the second upper and lower railing portions to the other end of the first and second upper and lower railing portions, And a third upper and lower railing having an angle different from that of the second upper and lower railing and connected to the hollow, the upper and lower rails being connected to the hollow, And the first bending portion is bent downward on the left and right sides of the upper surface so that the ends of the third and lower balancers are connected to the right connection holes formed on the upper and lower portions of the upper railing pillars The first and second connecting brackets are bent downward to the left and right sides of the upper surface so that the ends of the second upper and lower railing are connected to the left connecting holes formed at the upper and lower portions of the upper railing pillars, And a connecting means for rotatably connecting one side portion of the first and second connecting brackets facing each other.

The connecting means includes a first engaging hole formed in the first bent portion of the first connecting bracket, a second engaging hole formed in the second bent portion of the second connecting bracket, A first burr portion protruding inward from a rim of the first fitting hole and having an internal thread formed on an inner peripheral surface thereof, and a second burr portion protruded from the rim of the first fitting hole through the first and second fitting holes, 1 connecting bolt fastened to the female thread of the bucky part.

The left and right support holes are formed at oblique angles having different elevations on the left and right sides of the middle railing pillars.

A lower railing pillar that is vertically erected at a lower portion of the step and has a fixing hole formed at an upper right side thereof, and a lower railing pillar having one end inserted into the fixing hole of the lower railing pillar and the other end protruding outside the fixing hole, And a fixing bracket connected to the other end of the lower railing and detachably coupled to the lower railing by a connecting bolt.

And a plurality of balancers each having an upper portion connected to a lower portion of the first, second, and third upper railroad rails, and a lower portion connected to the first, second and third lower railroad rails, And a hinge pin rotatably connected to the lower railing.

And an upper part of the balancer is press-fitted into the lower part of the first, second, and third upper rail rails, and a notch part formed on a rim of the first and second upper rails, Are coupled in an indentation manner.

The first and second connection brackets connect the left and right first bent portions to each other and connect the first and second louvers supporting the second and third railing portions to each other. And a second lid supporting the lower railing.

The present invention has the advantage of being able to simplify the construction in the field and drastically shorten the working time since a plurality of railing units can be connected laterally in inclined steps without welding work.

 Further, since the angle of the first and second connection brackets 320A and 320B can be adjusted, the present invention has an advantage that construction can be performed irrespective of the situation of the horizontal or inclined stairs.

Since the left and right support holes 212 and 214 of the present invention are perforated with inclined angles having different elevations on the left and right sides of the middle railing pillars, the first, second, and third rails can be easily It has an advantage that it can be connected.

Since the first connection bracket 320A of the present invention has the curved portion 326 bent to connect the first bent portion 325A to one end of the upper surface of the first connection bracket 320A when the first and second connection brackets 320A and 320B rotate, It is possible to reinforce the rigidity of the first connection bracket 320A without interference and to reinforce the rigidity of the second connection bracket 320B that surrounds the end of the first connection bracket 320A.

The present invention further includes a hinge pin 145 that rotatably connects the lower end of each balancer 140 with respect to the first, second, and third lower balancers 115, 125, and 135 so that the balancer 140 can be adjusted and the appearance can be provided with a beauty.

The present invention is characterized in that an assembly hole 114 is formed so that the upper part of the balancer 140 is press-fitted into the lower side of the first, second and third upper rail rails 110, 120 and 130 and a notch 114a The first, second, and third upper rail rails 110, 120, and 130 and the balancer 140 are firmly coupled by press-fitting.

1 is a front view showing a railing connecting structure according to the present invention.
FIGS. 2A, 2B, and 2C are cross-sectional views of connecting portions of a railing according to the present invention. FIG.
3A and 3B are a perspective view and a cross-sectional view of a support bracket according to the present invention;
4A, 4B and 4C are a perspective view, a use state view and a cross-sectional view of the first and second connection brackets of the present invention.
5A and 5B are a perspective view and a cross-sectional view of a fixing bracket according to the present invention;
6 is a perspective view showing a modified example of the support bracket according to the present invention.
7 is a perspective view showing a modified example of the first and second connection brackets of the present invention.
8 is a perspective view showing a modification of the fixing bracket according to the present invention.
FIG. 9 is a perspective view showing another embodiment of the present invention. FIG.
10 is a front view showing still another embodiment of the present invention linking structure.

The present invention relates to a railing connecting structure for connecting the above-mentioned railing unit, and has a sloped staircase or a structure that can be connected horizontally.

1 to 8, the parapet connecting structure according to the present invention is formed by piercing the upper and lower portions of the middle railing pillars 210 standing upright at the stairs and having hollows to the left and right sides, And one end portion of the first upper and lower railing portions 110 and 115 is connected to one end portion of the first and second upper and lower rails 110 and 115 and the other end portion of the second and third upper and lower rails 110 and 115 is connected to the hollow, A third upper and lower railing 130 and 135 having a hollow and having an angle different from that of the second upper and lower rails 120 and 125. The support brackets 310, And upper and lower right and left connection holes 222 and 224 are formed at upper and lower portions of the upper and lower rails 220 and 220. The left and right connection holes 222 and 224 are formed at upper and lower portions of the upper and lower rails 220, 222, and 244 to connect the second, third, and fourth upper and lower railing portions 120 and 125 (130 and 135) It consists of a connecting bracket 320. The

Also, a fixing bracket 330 for connecting the first and second railing rails 110 and 115 to the lower railing pillars 230 located at the lower part of the stairs is provided.

1, the railing unit includes an upper railroad rail disposed at an upper portion of a railing column and connecting railroad rails in a lateral direction, a lower railroad rail disposed at a lower portion of the railing column and connecting rail rails in the horizontal direction, And a plurality of balancers (140) connecting the lower baluns and being spaced apart from each other.

The upper railroad rail is divided into the first, second, and third upper railroad rail sections 110, 120, and 130 according to the positions of the upper railroad rail sections, and the lower railroad rail sections are divided into first, second, and third lower rail rails 115, 125, .

The railing is divided into a middle railing 210, an upper railing 220 and a lower railing 230 depending on the position of the railing.

Further, on the upper side of the railing pillars, a handle rail 150 is provided which is connected via a coupling bracket.

2A, the support bracket 310 enters the left and right support holes 212 and 214, which are obliquely perforated on the left and right sides of the middle railing pillars 210, so that the left and right ends of the middle railing pillars 210 And is connected to the first, second, and third railing rails by fastening bolts 420.

2B, the connection brackets 320 are connected to upper surfaces of the upper and lower railing portions 220 and 130 so that the ends of the third and lower railing portions 130 and 135 are connected to the right connection holes 224 formed on the upper and lower portions of the upper and lower railing pillars 220, A first connecting bracket 320A formed on the left and right sides of the upper rail 215 and the lower rail 220 to bend the first bent portion 325A downward, And a second bent portion 325B bent downward on both sides of the upper surface 328B so as to connect the ends of the second upper and lower railing portions 120 and 125 and coupled to surround the outer side of the first bent portion. 2 connecting brackets 320B and connecting means for rotatably connecting one side portion of the first and second connecting brackets 320A and 320B facing each other.

As the first and second connection brackets 320A and 320B enter the left and right connection holes 222 and 224, the upper surfaces 328A and 328B are connected to the upper and lower right and left connection holes 222 and 224, respectively, .

3A and 3B, the support bracket 310 is formed to be bent downward on both left and right sides of the upper surface 318, and end portions of the first, second, and third upper and lower railing portions 110 and 115 (120 and 125) And right and left support portions 315 formed with through holes 313 on both sides in the left and right sides so as to be fastened by the fastening bolts 420.

The left and right support portions 315 are formed at the center with a third coupling hole 311 for coupling the coupling bolts 410 when the first and second upper and lower railing portions 110 and 115 and 120 and 125 are coupled with each other, A second burr part 312 having a female screw thread is formed so that the rim of the third coupling hole 311 protrudes inward during the burring process for perforating the hole 311 so that the connection bolt 410 is fastened.

6, when the first and second upper and lower rails 110 and 115 (120 and 125) are coupled to each other, the support bracket 310 is disposed such that its upper surface faces the upper side of the left and right support holes 212 and 214. [ And a lower cover 317 connecting the lower ends of the left and right support portions 315 and supporting the lower surfaces of the first, second and third upper and lower railing portions 110 and 115 (120 and 125).

In the case where the lower cover 317 is provided, it is possible to reinforce the support force for the first and second upper and lower railing rails 110 and 115 (120 and 125). On the other hand, Is omitted, there is a disadvantage in that the supportability to the first, second, and third upper and lower railing sections 110 and 115 (120 and 125) is lowered, so that the operator can arbitrarily select and use it according to the installation environment.

4A and 4B, the first and second connection brackets 320A and 320B include first and second bending portions 325A and 325B bent to the left and right sides of the upper surfaces 328A and 328B, A pair of first and second upper and lower railing members 110 and 115 (120 and 125) are fastened to the first and second upper and lower rails 110 and 115, respectively, through fastening holes 323 formed in the first and second bent portions 325A and 325B, The fastening bolts 420 are provided.

The first and second connecting brackets 320A and 320B are rotatably connected to each other by connecting means. The first and second connecting brackets 320A and 320B are rotatably connected to the first and second connecting brackets 320A and 320B. And then enters the left and right connection holes 222 and 224 of the upper rail column 220 to connect the second, third, and fourth upper and lower railings 120 and 125 (130 and 135) do.

For example, the second and lower baluns 120 and 125 are connected to the second connecting bracket 320B at an angle inclined from the lower side to the upper side, and the third and lower railing 130 and 135 are horizontally connected to the first connecting bracket 320A And the connecting angles of the first and second connection brackets 320A and 320B may be adjusted to correspond to the connecting inclination angles of the second, third, and fourth upper and lower balancers 120 and 125 (130 and 135)

4A and 4C, the connecting means of the present invention includes a first coupling hole 321A formed in a first bent portion 325A of the first connection bracket 320A, A second coupling hole 321B formed in the second bent portion 325B of the first connection bracket 320A and a bent portion 325B extending from the end of the first connection bracket 320A and connecting the left and right first bent portions 325A, A first burr portion 322 protruding inward from a rim of the first coupling hole 321A and having an inner peripheral surface formed with a female screw hole, and a second burr portion 322 penetrating through the first and second coupling holes 321A and 321B, And a connecting bolt (410) fastened to the female thread of the first buckling part (322).

The connecting means connects the first and second connecting brackets 320A and 320B to each other and the connecting bolt 410 connects the first and second connecting brackets 320A and 320B to the upper railing pillars 220 And the like.

As shown in FIG. 7, the first and second connection brackets 320A and 320B of the present invention have a structure in which a lid member 327 is connected under the first and second bending pieces.

When the lid member 327 is provided, the first and second connection brackets 320A and 320B have a rectangular cross-sectional structure having front and rear sides open.

The lid member 327 supports the lower surfaces of the second, third, and fourth upper and lower railing portions 120 and 125 (130 and 135) when assembled with the second, third and fourth upper and lower railing portions 120 and 125, And reinforce the supporting force of the lower side rails 120 and 125 (130 and 135).

The first burr portion 322 is formed by protruding the rim of the first coupling hole 321A inward while drilling the first coupling hole 321A through a burr process.

In addition, the first burr 322 has an inner circumferential surface formed with a female screw thread for fastening with the connecting bolt 410.

The connecting means of the present invention has a fastening hole 323 formed on the left and right side surfaces of the first and second connecting brackets 320A and 320B and passes through the fastening hole 323, And a fastening bolt 420 fastened to the fastening holes of the rail rails 110 and 115 (120 and 125).

Referring to FIG. 2C and FIGS. 5A and 5B, the railroad connecting structure of the present invention includes a lower railing pillar 230 vertically standing on a lower portion of a stair and having a fixing hole 232 formed on an upper right side thereof, The other end of the first upper and lower railing portions 110 and 115 is connected to the connecting bolt 410 and the other end of the first upper and lower railing portions 110 and 115 is connected to the fixing bolt 232 of the fixing bolt 232, And a fixing bracket (330) detachably coupled to the lower rail column (230).

The fixing bracket 330 has left and right side portions 335 bent downward on both left and right sides of the upper surface 338 so as to fasten the connecting bolts 410. The left and right side portions 335 are formed on one side of the left and right side portions 335, 4 engaging hole 331 is drilled and the rim of the fourth engaging hole 331 is burred to form the third burr portion 332. [

That is, the third burr 332 is formed by burring so that the rim of the fourth engaging hole 331 protrudes inward during the drilling of the fourth engaging hole 331.

An engaging hole 333 is formed on the other side of the left and right side portions 335 of the fixing bracket 330 so that the other ends of the first and second railing portions 110 and 115 are fastened by fastening bolts 420.

As shown in FIG. 8, the fixing bracket 330 includes a lid portion 337 connecting the lower portions of the left and right side portions 335 and supporting the lower ends of the other ends of the first and second railing portions 110 and 115 .

Accordingly, the rail connecting structure of the present invention shows that the rail units can be connected at an inclined position such as a step or horizontally, and the rail units can be connected to each other in the horizontal direction.

According to the present invention having such a construction, the railing pillars can be fixed to the fixing bracket 330, the support bracket 310, and the first and second connection brackets 320A and 320B ) Are installed.

The factory-made railing pillars can be installed on site by choosing one of three types according to the site conditions such as the stairs position.

The connecting process of the first and second upper and lower baluns 110 and 115 (120 and 125) disposed on the left and right sides of the middle railing pillars 210 is similar to the process of connecting the supporting brackets 310 to the upper, The left and right support holes 212 and 214 formed in the first and second upper and lower rails 210 and 214 and the support brackets 310 protruded to the left and right sides of the middle railing pillars 210 110, 115) 120, 125, respectively.

The first and second upper and lower railing sections 110 and 115 are fastened and connected to each other by fastening bolts 420 penetrating through holes 313 formed at both sides of the left and right support portions 315.

The first and second connecting brackets 320A and 320B are connected to the upper and lower railing pillars 220 via connecting means so that the first and second connecting brackets 320A and 320B are connected to the upper and lower right and left connection pillars 220, The fastening bolt 420 is fastened to the fastening hole 323 of the first connection bracket 320A protruding to the right side of the upper railing pillar 220 after entering the hollow of the upper railing pillar 220 through one of the fastening bolts 222, And the fastening bolts 420 are passed through the fastening holes 323 of the second connection bracket 320B protruding to the left side of the upper railing pillars 220, Second and third upper and lower railing sections 120 and 125 and 130 and 135 are connected to the upper railing pillars 220 through the first and second connection brackets 320A and 320B .

The connecting means for connecting the first and second connecting brackets 320A and 320B may include a first bent portion 325A of the first connecting bracket 320A and a second bent portion 325B of the second connecting bracket 320B, The connection bolts 410 are inserted into the first and second coupling holes 321A and 321B of the first and second bending portions 325A and 325B to move the first and second baffles 322 and 323, So that the first and second connection brackets 320A and 320B are connected to each other.

The first and second connection brackets 320A and 320B may be inserted into the hollow through one of the left and right connection holes 222 and 224, Is inserted into the hollow through the right connection hole 224 and then coupled to the left side of the upper railing pillar 220 via the left connection hole 222. [

The second upper and lower railing portions 120 and 125 are connected to the other side of the second connection bracket 320B protruded to the left side of the upper side railing pillar 220 with the fastening bolts 420, The upper and lower railing portions 130 and 135 are connected to the other side portion of the first connection bracket 320A protruded to the right of the upper and lower rails 130 and 135 by the fastening bolts 420, It is possible to horizontally connect a plurality of railing units to the left and right sides of the column 220. [

The coupling between the first and second connection brackets 320A and 320B and the second, third and fourth upper and lower webbing 120 and 125 and 130 and 135 is performed by connecting the fastening bolt 420 to the first and second connection brackets The first and second connecting brackets 320A and 320B are fastened to the first and second connecting brackets 320A and 320B by fastening them to the fastening holes formed in the first and second upper and lower railing rails 110 and 115 The two-phase and the lower rail rails 110 and 115 (120 and 125) can be firmly fixed.

Accordingly, the railing unit including the second and lower railing rails 120 and 125 and the other railing unit including the third and lower railing rails 130 and 135 are disposed on the left and right sides of the upper railing pillar 220, Lt; / RTI >

The supporting bracket 310 is inserted into the hollow through the left and right support holes 212 and 214 formed on the upper, lower left and right sides of the middle railing pillars 210 to form the first, The upper and lower railing sections 120 and 125 and the third and lower railing sections 130 and 135 are connected to the upper railing pillars 220 by fastening bolts 420. The first and second connecting brackets 320A and 320B are fastened to the upper and lower railing pillars 220, The plurality of railing units can be connected to the left and right sides of the upper railing pillars 220 in the lateral direction without performing a conventional welding operation and the fixing brackets 330 are attached to the upper and lower portions of the lower railing pillars 230 The first and second railing portions 110 and 115 can be connected to each other via the guide rails. Therefore, the construction can be carried out irrespective of horizontal or inclined site conditions, and the construction can be performed quickly without welding.

In addition, since the left and right support holes 212 and 214 of the present invention are perforated at left and right sides of the middle railing pillars 210 at different inclination angles, regardless of the inclination of the steps, The lower side rails 110 and 115 (120 and 125) can be easily connected.

Since the first connection bracket 320A of the present invention has the bent portion 326 bent to connect the first bent portion 325A to one end of the upper surface 328A, the first and second connection brackets 320A, The reinforcement of the rigidity of the first connection bracket 320A and the reinforcement of the rigidity of the second connection bracket 320B surrounding the end of the first connection bracket 320A Respectively.

The present invention further includes a hinge pin 145 that rotatably connects the lower end of each balancer 140 with respect to the first, second, and third lower balancers 115, 125, and 135 so that the balancer 140 can be adjusted and the appearance can be provided with a beauty.

The present invention is characterized in that an assembly hole 114 is formed so that the upper part of the balancer 140 is press-fitted into the lower side of the first, second and third upper rail rails 110, 120 and 130 and a notch 114a The first, second, and third upper rail rails 110, 120, and 130 and the balancer 140 are firmly coupled by press-fitting.

FIG. 9 is a view showing another embodiment of the present invention, in which the upper part is connected to the lower part of the first, second and third upper railroad sections 110, 120 and 130 and the lower part is connected to the first, second and third lower rail parts 115, 125 and 135 And a hinge pin 145 that rotatably connects the lower ends of the respective balancers 140 to the first, second and third lower rail rails 115, 125, and 135, respectively .

The hinge pin 145 rotatably connects the lower portion of each balancer 140 with respect to the first, second and third lower rail rails 115, 125 and 135, And the tilt angle can be arbitrarily adjusted.

10 is a view showing another embodiment of the present invention. In this embodiment, an assembly hole 114 formed at the lower side of the first, second, and third upper railway belts 110, 120, and 130 and into which the upper part of the balancer 140 is press- The first and second upper rail rails 110 and 120 and the balancer 140 are coupled to each other in a press-fitting manner by providing a notch 114a formed at an edge of the assembly hole 114. [

The upper end of the balancer 140 is inserted into the assembling hole 114 formed in the lower side of the first, second and third upper and lower railing rails 110, 120 and 130 while the upper edge of the railing is inserted into the notch 114a The mountain portion of the notch 114a is deformed by the contact force and the upper end of the balancer 140 is firmly clamped. Therefore, the balancer 140 is moved to the first, second, third And can be firmly fixed to the upper rail rails 110, 120 and 130.

Although the present invention has been described in detail with reference to specific embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. Therefore, the scope of the present invention should not be limited to the above-described embodiments, but should be determined by the appended claims, as well as the appended claims.

That is, the present invention described above is not limited to the above-described specific preferred embodiments, and any person skilled in the art will be allowed to use the present invention without departing from the gist of the present invention. It will be understood that various modifications can be made without departing from the spirit and scope of the invention as defined in the appended claims.

110: first upper railing 114:
114a: notch 115: first bottom rail
120: second upper railing 125: second lower railing
130: third upper rail 135: third lower rail
140: baluster 145: hinge pin
150: handle rail 210: middle rail column
212, 214: left and right support ball 220: upper rail column
222,224: Left and right connection holes 230: Lower rail column
232: Fixing hole 310: Support bracket
311: third coupling hole 312: second buffer portion
313: Through hole 315: Left and right support parts
318: upper surface (of support bracket) 320: connection bracket
320A, 320B: first and second connection brackets 321A, 321B: first and second coupling holes
322: first burr part 323: fastening hole
325A and 325B: first and second bent portions
328A, 328B: upper surface (of first and second connection brackets)
330: Fixing bracket 331: Fourth coupling ball
332: third bucket part 333: engaging hole
335: left and right side portions 338: upper surface (of the fixing bracket)
410: connecting bolt 420: fastening bolt

Claims (7)

Left and right support holes 212 and 214 formed in the upper and lower portions of the middle railing pillars 210 standing vertically in the stair and having a hollow and pierced to the left and right sides and communicating with the hollow,
The upper and lower rails 120 and 125 are connected to one end of the first upper and lower railing rails 110 and 115 and the other end of the first and second railing rails 110 and 115 is connected to the hollow through the left and right support holes 212 and 214, A support bracket 310 provided with left and right support portions 315 bent to left and right sides,
The left and right connection holes 222 and 224 are connected to the third upper and lower railing 130 and 135 having an angle different from that of the second upper and lower rails 120 and 125, An upper railing pillar 220,
A first bent portion 325A is formed on the left and right sides of the upper surface so that the end portions of the third and lower railing portions 130 and 135 are connected to the right connecting hole 224 formed on the upper and lower portions of the upper side railing A first connection bracket 320A formed to be bent downward,
The left and right sides of the upper and lower railing portions 120 and 125 are bent downward on both sides of the upper surface so that the ends of the second upper and lower railing portions 120 and 125 are connected to the left connection holes 222 formed on the upper and lower portions of the upper railing pillars 220, A second connection bracket 320B formed with a second bent portion 325B to be coupled to surround the outside of the portion 325A,
And a connection means for rotatably connecting one side portion of the first and second connection brackets (320A, 320B) facing each other. The method according to claim 1,
The connecting means includes a first coupling hole 321A formed in the first bent portion 325A of the first connection bracket 320A,
A second coupling hole 321B formed in the second bent portion 325B of the second connection bracket 320B,
A bent portion 326 extending from an end of the first connection bracket 320A and connecting the left and right first bent portions 325A,
A first burr portion 322 protruding inward from the rim of the first engagement hole 321A and having an internal thread on the inner peripheral surface thereof,
And a connecting bolt (410) passing through the first and second coupling holes (321A, 321B) and fastened to the female thread of the first burr portion (322). The method according to claim 1,
Wherein the left and right support holes (212, 214) are formed at left and right sides of the middle railing pillars (210) at an inclined angle having different elevations. The method according to claim 1,
A lower railing pillar 230 standing upright at a lower portion of the step and having a fixing hole 232 formed at an upper right side thereof,
The other end of the first upper and lower railing rails 110 and 115 is connected to the fixing hole 232 of the lower railing pillar 230 and the other end thereof is projected to the outside of the fixing hole 232, Further comprising a fixing bracket (330) detachably coupled to the lower railing pillars (230) by bolts (410). The method according to claim 1,
And a plurality of balancers (140) connected to the lower portions of the first, second, and third upper railways (110, 120, 130) and connected to the first, second and third lower railways (115, 125,
Further comprising a hinge pin (145) for rotatably connecting the lower end of each balancer (140) to the first, second, and third lower balancers (115, 125, 135). The method according to claim 1,
An assembler 114 formed on a lower side of the first, second, and third upper balancers 110, 120, and 130 and into which the upper portion of the balancer 140 is inserted,
And a notch 114a formed at an edge of the assembly hole 114,
Wherein the first, second, and third upper rail balances (110, 120, 130) and the balancer (140) are coupled by press fitting. The method according to claim 1,
And a cover member (327) connecting the first bent portions (325A) of the first and second connection brackets and supporting the second and third upper and lower railing portions (120, 125) (130, 135) Connection structure.

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