JPH0334962Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention is an invention related to the joists of roof-standing or pillar-mounted metal balconies.

(Conventional technology) Conventionally, metal balconies were manufactured using the
As stated in Utility Model Publication No. 117102, in order to prevent the metal balcony from swinging laterally and to improve its strength, a flint beam, equivalent to the flint beam in the frame of a house, is installed at the intersection or inside corner of the front girder and girder of the frame. A diagonal beam may be installed.

(Problem to be solved by the invention) However, in order to install the diagonal beam mentioned above, it becomes necessary to separately prepare the diagonal beam as a component, and it is also necessary to prepare the diagonal beam with the length necessary to produce the desired effect. In order to install the beam inside the above-mentioned intersection or corner, the gap between the gable beam and the adjacent joist must be made wider than the spacing between the gables and the adjacent joists, or the beam must be installed so that it intersects with the joist, so a hollow profile member is used. The vertical dimension, that is, the height, of the front girder and end beam must be higher than standard dimensions,
This method requires extra use of expensive aluminum alloy material, which increases the cost of materials, and on the other hand, it often impairs the appearance of the product, so even though the necessity is well recognized, it is not often implemented. In the drawings of the above-mentioned publication, it can be assumed that the intervals between the joists in the diagonal beam section are widened, but the negative aspects of the framework cannot be avoided due to this. The purpose of the present invention is to provide a new branch joist in which two parallel extruded hollow joists are branched and expanded at both ends by cutting, without installing the diagonal beams. The length allows the joist to be hung horizontally between the joist hanger and the front girder, and is fixed by bolts and nuts, unlike conventional methods, which prevents the balcony from swinging sideways due to wind pressure, earthquakes, etc. It also improves the strength of the.

(Structure of the invention, means for solving problems) The balcony shown in Fig. 4 is a roof-mounted type or a conventionally known public-use balcony that can be installed with the new branch joists of the present invention, except for the structure of the joists. This is a perspective view of the main parts of a pillar-built metal balcony. Placed on the top of the roof, and in the case of a pillar construction type, a plurality of pillars lined up in parallel, buried to the required length in the foundation at the front of the building and fixed by pouring concrete; 2 is stretched between the pillars 1 above. The front girder, 3 is a mounting frame for fixing the frame to the outer wall of the building frame, 4 is a girder stretched horizontally between the support 1 and the lower end of the mounting frame 3, and 5 is left and right. The caps 6 installed between the pillars 1 and between the upper ends of the pillars 1 and the mounting jambs 3 are installed parallel to the gables 4 between the left and right pillars 1 and at the lower part of the pillars and the mounting jambs 3. 7 is a plurality of parallel lattices fixed at predetermined intervals between the Kasagi 5 and the lower crosspiece 6, 8 is a joist hook stretched between the lower ends of the left and right mounting frames 3, and 9 is a front joist. Joists are arranged at appropriate equal intervals between the girder 2 and the above-mentioned joist hook 8, and these are made of the above-described column 1 and an extruded hollow member or a U-shaped cross section of aluminum alloy. After the molded bodies are cut to desired dimensions, they are assembled together and fixed together by bolts and nuts or by tightening with screws.

Based on the above premise, the configuration of the present invention will be described below with reference to embodiments shown in the drawings. 1 and 2a to 2c, 10 is the branch joist of the present invention, 11a and 11b are the left hollow body and right hollow body, respectively, and 12 is the left and right hollow body during extrusion molding of the hollow body. The joist attachment side edges integrally extended from each hollow body, 12
13 is a bolt insertion hole drilled at both ends of the joist attachment side edge 12 in order to fix the branch joist 10 to the joist fixing edges 2a and 8a, which are integrally extended when forming the front girder 2 and joist hook 8; Left and right hollow bodies 11a and 11
b is a continuous connecting edge having a thickness that is approximately the same as or slightly thinner than the joist attachment side edge 12 that connects the two hollow bodies over the entire length on the inner side of the lower part; 14 is a branched joist; 10 is a combined part, 15 is a branch part connected to both ends of the combined part 14, among which 15a is a left branch hollow body on the left side, 15b is a right branch hollow body on the right side,
15c and 15d are separation edges created by cutting the two, respectively. FIGS. 2a to 2c show cross-sectional views of left and right hollow bodies 11a and 11b of various shapes at right angles to the longitudinal direction. Note that the above-mentioned connecting edge 13 is provided with thin grooves 13a along the longitudinal direction of the central portion thereof on both sides or one side thereof, thereby making it possible to cut the connecting edge 13 when forming the branching portion 15. make things easier. That is, as an example of a processing method for forming the branch portion 15, for example, both the left and right hollow bodies 11a including the left and right through joist attachment side edges 12 are initially
and 11b are integrally formed by extrusion molding of a metal material such as an aluminum alloy through a connecting edge 13 having a thin muscle groove 13a along the longitudinal direction of the central portion between the two. , after cutting it to the predetermined size of the joist, use a thin-bladed circular saw blade with a carbide tip, etc. to cut it from both ends of the profile at the thin muscle groove 13a along the longitudinal direction of the central part of the connecting edge 13. Left hollow body 1 by machining the length of the
1a and the right hollow body 11b are separated to form a left branch hollow body 1.
5a and a right branch hollow body 15b.
After forming the branch portion 15 with the portion c remaining, for example, the separated end portions of both or one of the left and right branch hollow bodies 15a and 15b are connected to the combined portion 14 by a hydraulic device. The branch part 15 has a shape that expands into two at an angle of about 40 to 45 degrees from the boundary of It is possible to form a branch part 15 in which K-shapes as shown in b are combined at both ends of the branch joist 10.

(Function) In order to install the branch joist 10 of the embodiment of the present invention having the above-mentioned partial structure on the substantially square frame of a roof-mounted or pillar-mounted metal balcony, it is necessary to use the conventional conventional method shown in FIG. Connect the joist 9 of the straight hollow profile that was used, for example, two on one side, for a total of four ends on both the front and back sides, to the joist fixed edge 2a of the front girder 2 of the balcony frame. Either two joists are placed on the fixed edge 8a of the joist of hanging 8, and a plurality of joists are placed parallel to the gable 4 at approximately equal intervals, or a branch joist is installed only in the individual areas adjacent to the gable 4 on both the left and right sides. After placing two pieces of 10,
Bolt insertion holes 12a for joist attachment, which are drilled at both ends of the joist attachment side edge 12 of the branch joist 10, etc.
Bolt insertion holes (not shown) are drilled in the joist fixing edges 2a and 8a at locations corresponding to the bolt insertion holes 12a on the branch joist 10 side using bolts.
It is preferable to securely secure it using nuts and hang it horizontally.

(Effects of the invention) Since the present invention has the structure and function described above, (1) a branch comprising a left branch hollow body and a right branch hollow body formed by expanding both ends into two; By hanging the joists horizontally between the front girder and joist hook of the metal balcony frame, it is possible to prevent the balcony from swinging sideways during wind pressure or earthquakes without installing diagonal beams or braces. Furthermore, the strength of the frame is improved.

(2) Since accessory parts such as diagonal beams or braces are not required, the number of parts can be reduced and assembly work can be shortened.

(3) Branch joists can be made from integrally molded hollow members by notching and bending the connecting edges of their juxtaposed middle parts, so they have better performance compared to conventional joists. It's not that expensive in terms of price.

(4) It has the flexibility of being able to use the branch joists of the present invention only in the area adjacent to the end girder and conventional joists in the other intermediate areas.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a branch joist according to an embodiment of the present invention, Figs. 2a to 2c are longitudinal cross-sectional views of branch joists having hollow bodies of different shapes, and Figs. 3a and 3b.
Figure 4 is a partial cross-sectional plan view of two types of metal balcony frameworks each equipped with the branch joists of the present invention, and Figure 4 is a main part of a conventional roof-mounted or pillar-built metal balcony. FIG. Explanation of the symbols representing the main parts of the diagram: 1... Column, 2... Front girder, 3... Mounting frame, 4... Gable beam,
8...Joist hanging, 2a, 8a...Joist fixing edge, 9...
... Joist (conventional type), 10... Branch joist (of the present invention), 11a... Left hollow body, 11b... Right hollow body, 12... Joist attachment side edge, 12a... Bolt insertion hole, 13... ...Connection edge, 14...Combined part, 15...
...Branch portion, 15a...Left branch hollow body, 15b...
Right branch hollow body, 15c... separation edge, 13a... thin muscle edge.

Claims (1)

[Scope of utility model registration request] A pair of left and right hollow bodies that are arranged in a straight line in the horizontal direction and have joist attachment edges 12 that are integrally extended during extrusion molding, and a connecting edge 13 that connects the two in the middle with a slight gap between them. 11a, right hollow body 1
1b, and the left hollow body 11a and right hollow body 1 arranged at both ends of this combined part 14.
1b is separated at the connecting edge 13, and the left hollow body 11a is separated.
And a branch part 1 that expands the right hollow body 11b into two to form a left branch hollow body 15a and a right branch hollow body 15b.
5. A branch joist for a roof-mounted or pillar-built metal balcony made of an extruded member made of a metal material such as an aluminum alloy.