JPH0642002Y2 - Fastening device for joints between columns and cross members in architecture - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention mainly relates to a joint between a base and a pillar, or a pillar and both sides of the pillar, and a special bolt and a tightening screw rod that reinforce the coupling force of each beam that is joined to the front and rear. The present invention relates to a fastening device.

[Conventional technology]

Conventionally, for example, when connecting the left and right beams to a column, it was old that the joints were assembled with concave and convex notches, and then the outer surface of each abutting part was straddled with a frosted metal. In the case of the column, two elongated sheet metal members each having a tubular portion projecting at its end are formed on the base surface of each beam joined to the left and right or front and back of the column after forming a lateral through hole in the column. After mounting as opposed to each other as a boundary, tightening screw rods are skewed through the through holes of the tubular portions and the columns, and nuts are screwed and fastened to the ends of the screw rods protruding from the tubular portion. .

[Problems to be solved by the invention] However, of the above, the former is merely one in which a few pieces of frosted metal are straddled over the outer surface of the joints of columns and beams, so there is little stress on bending and therefore a strong integral structure. It has a drawback that it is easily distorted when it is subjected to vibration such as an earthquake because it cannot maintain its proper holding power.

On the other hand, in the latter, both ends of the tightening screw rod that penetrates the pillar are mounted on the tubular part on the sheet metal surface opposite to each beam surface and the nut is screwed and fastened to the protruding end, Each beam is always held correctly and integrally so that a stable reinforcing effect can be obtained, but when attaching the metal plate to each beam surface, it is fixed by previously punching the insertion hole of the metal plate attachment rod to each beam. Therefore, it is unavoidable that the attachment of them requires troublesome labor, and that the fabrication of the sheet metal with the tubular portion also requires the labor of working, and thus the inevitably becomes expensive.

[Means for Solving the Problems]

The present invention is configured as follows in order to eliminate various disadvantages.

That is, the fastening device for the joint portion of the pillar and the cross member in the construction of the present invention, in the vicinity of the joint portion of the pillar and the cross member to be joined to each other,
A straight screw rod having a threaded portion on both sides in the longitudinal direction, which is inserted into a through hole provided in the center of one of the members in the thickness direction of the member, and a flat portion on the head side. And the flat portion is provided with an insertion hole through which the screw rod is inserted, and the screw thread of the screw portion is formed in a wedge shape with its apex deflected in the head side direction. , A pair of bolts of the other member, which face each other with the one member in between, and are driven and / or inserted into a position where the axis of the through hole is projected, and a pair of bolts protruding from the insertion holes of the respective bolts. It is characterized by comprising a pair of nuts screwed to both threaded portions of the screw rod to fasten the screw rod to the respective bolts.

In the present invention, the cross member is, for example, a base or both sides of a pillar,
It refers to horizontal members such as beams that are joined to the front and back and to the left and right.

[Action effect]

Since the present invention is configured as described above, it goes without saying that the column and the transverse members arranged on the right and left sides of the column are always correctly and integrally joined by the tightening screw rod inserted through the center of the column as in the above example. In the present proposal, the bolt supporting both end portions of the tightening screw rod has a thread portion of the thread portion formed in a wedge shape with its top portion deflected toward the head side of the bolt, and this is formed into a pillar (or a cross member). When driven and / or turned in, the wedge-shaped screw does not easily pull out due to the so-called anchor effect, and the bolt is securely fixed to the column (or the cross member). Then, the screw rod is inserted into the insertion holes of the flat portions on the head side of the bolts on both sides, and nuts are screwed from the outside to the screw portions protruding from the insertion holes of the bolts on both sides, respectively. Since it is driven into and / or turned into a horizontal member and its interval is fixed, the nuts are tightened toward the center of the threaded rod so that the threaded rod is firmly and securely attached to the bolts on both sides. Be fastened. Further, since the screw rod is inserted into the through hole provided in the horizontal member (or the pillar) joined to the pillar (or the horizontal member), the horizontal member (or the pillar) is anchored to the screw rod. As described above, since the horizontal member (or the pillar) is securely fixed to the pillar (or the horizontal member), it is possible to firmly hold the joint between the pillar and the horizontal member. Moreover, the bolt may be attached simply by driving and / or turning it into the pillar (or cross member), and the screw rod may be attached to the bolt by tightening the nut. The attachment of the screw rod to the pillar can be a simple operation of merely inserting it into the through hole. Therefore, there is also an advantage that there is no disadvantage such as complicated and unnecessary labor such as perforating the mounting rod on each beam at the time of mounting at high cost like the above-mentioned conventional metal fitting with a tubular portion and weakening the beam. It has ingredients.

Since the present plan is as described above, the joining members can be fastened easily without requiring extra labor or members, and can be made quickly quickly, firmly and securely, and at a low cost, so that the construction cost can be efficiently implemented at a low cost. It has one.

〔Example〕

As shown in the drawing, in the lateral direction penetrating the central portion of the pillar 1 near the joint between the beam 2 and 2'of the pillar 1 interposed between the beams 2 and 2'joined left and right. The left and right beams 2, 2 ′ which are formed in the through hole H and face both ends of the through hole are shallowly pierced in the vicinity of the joints with the pillars 1 and on the extended surfaces of the joints. A short circular portion P at the upper end, and a flat portion 3 ′ having an insertion hole h in the central portion immediately below the short circular portion. The lower end of the wedge-shaped screw portion N which is deflected in the lateral direction is intervened, and the circular portion of the upper end is tapped and inserted to insert each insertion hole h of the head surface into the through hole H of the pillar 1. After facing each other, the tightening screw rods 4 are skewed through the through holes and the insertion holes, and nuts 5 are screwed onto the ends of the screw rods 4 protruding from the respective insertion holes h to complete the fastening.

[Brief description of drawings]

FIG. 1 shows an embodiment of the present invention. FIG. 1 is a front view of a bolt in the present invention, FIG. 2 is a side view of the same, and FIG.
The figure is a perspective view showing a state in which the left and right beams are fastened to a column according to the present invention. 1 is a pillar, 2, 2'is a beam, 3 is a bolt, 3'is a flat part, 4 is a tightening screw rod, 5 is a nut, H is a through hole, h is an insertion hole,
N is a screw part.

Claims (1)

[Scope of utility model registration request] 1. A longitudinal direction in which a central portion of any one of the above-mentioned members is inserted into a through hole provided in a thickness direction of the member in the vicinity of a joint between a column and a horizontal member which are joined to each other. A straight threaded rod having threaded portions on both sides, a flat portion is formed on the head side, and the flattened portion is provided with an insertion hole through which the above-mentioned screw rod is inserted, and the screw thread of the threaded portion. Has a top portion formed in a wedge shape that is deflected in the head side direction, and is driven into the other member so as to face each other with the one member in between and project the axis of the through hole.
Or a pair of bolts that are inserted and a pair of nuts that are screwed into both threaded portions of the screw rods that project from the insertion holes of the bolts and that fasten the screw rods to the bolts. A fastening device for a joint portion between a pillar and a cross member in architecture, which is characterized in that