JPS6220580Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a fastener that can be attached to an existing reinforced concrete exterior wall using an anchor.

Nowadays, when the exterior of an existing building becomes dirty and spoils the city's aesthetics, it is necessary to gradually add a new curtain wall to the outside of the building without tearing down and renewing the existing exterior wall. By this,
In addition to shortening the construction period, a construction method has been developed that economically beautifies obsolete buildings. The present invention provides a fastener that is indispensable for the above-mentioned exterior wall construction. The details of construction work most suitable for the present invention will be explained below with reference to the drawings.

Fig. 1 is a front view of the curtain wall, Fig. 2 is a side sectional view from the arrow direction in Fig. 1 with the present invention installed, and Fig. 3 is a cross-sectional plan view from the arrow direction in Fig. 2. FIG. 4A is a front view of the fastener of the present invention, and FIG. 4B is a side view thereof. Figures 1 to 5 are explanatory diagrams for use. Figures 1 to 3 show fasteners A being fixed to the outer wall 1 of an existing reinforced concrete building without any damage to the outer wall exterior, mullions 3 being fixed to the building via brackets B, and fixed intervals. This figure shows a state in which a square space 5 is formed by fixing a blind 4 between each of the mullions 3 that pass vertically, and a glass 6 or a panel 7 is fitted in each space. In the example, the surface of the outer wall 1 of the building is tiled 2.
It is packaged in. According to the above-mentioned construction method, the existing outer wall 1 can be installed with fastener A without having to demolish anything.
can be firmly fixed to the outer wall of a building, and a curtain wall can be formed via the bracket B. However, when driving the anchor 8 to fix the fastener A at the position specified on the drawing for pre-planned curtain wall construction, etc., the tip of the anchor 8 often hits the reinforcing steel in the concrete, making it impossible to drive. If you try to find another location, the pitch will be uneven and it will be a hassle. The fastener A of the present invention solves these problems.

Fig. 4A shows an embodiment of the fastener A according to the present invention, and the figure shows an L-shaped fastener A in cross-section, and 9 is a vertical surface that comes into contact with the outer wall 1, and on the vertical surface 9, there are vertically arranged upper and lower sections approximately in the center, as in the conventional case. A pair of directional long holes 10 are formed on the left and right sides in the figure. Then, a notch 11 longer than the predetermined long holes 10 or a longer elongated hole 11 is provided on the outside of the predetermined pair of vertical elongated holes 10 as shown by the chain line. It is something. 1
Reference numeral 2 designates a long hole for fixing the bracket B with a bolt 13. Figure 4B is a side view of Figure A. The anchor bolt 8 in the figure shows a state in which the tip of the anchor 8 can be driven in without hitting the reinforcing bars on both the left and right sides, and the fastener A is shown in Figure 4A. It is shown that it is connected and fixed with the anchor 8 at the predetermined circle mark position. Figures 5-1 are explanatory diagrams of how to use the fastener A of the present invention. First, to explain A in Fig. 5, when the left anchor 8 in the figure is driven in without any obstruction, and the right anchor 8 hits the reinforcing bar and cannot be driven in, the long elongated hole 11 located 50 mm outside of that position. Figure B shows an example in which the left anchor 8 is used, and Figure C shows an example in which the left and right anchors 8 are driven into the long holes 11 on the outside. The above is an example in which the anchors 8 are released to the left and right sides, but since the long holes (long notches) on the sides are longer in the vertical direction, when driving is impossible, one or both anchors 8 can be moved downward from that position. According to the present invention, it is possible to securely drive the anchor bolt 8 into the specified position, and the operator can feel at ease and ensure that the fastener A is in the specified position. can be fixed. Since there are an extremely large number of fasteners A that need to be installed on the outer walls of high-rise buildings, the present invention makes it possible to directly and reliably fix fasteners A to the existing outer walls, thereby achieving the intended purpose. This is the key to contributing to improved productivity.

[Brief explanation of the drawing]

FIG. 1 is a front view of the curtain wall, and FIG. 2 is a sectional view from the arrow direction to the side in FIG. 1 showing the installation of the present invention. 3 is a plan view taken from the direction of the arrow in FIG. 2, FIG. 4A is a front view of the fastener of the present invention, FIG. A... Fastener, B... Bracket, 1...
External wall (existing), 3... mullion, 4... unmarked, 5...
Square space, 8... Anchor (bolt), 9... Vertical surface, 10... Elongated hole (upper and lower), 11... Long elongated hole (notch).

Claims (1)

[Scope of claim for utility model registration] The existing reinforced concrete exterior wall remains,
In a fastener for attaching a progressively new outer wall surface to the outside via a bracket, the fastener A has an L-shaped cross section, and a predetermined portion is located approximately in the center of the vertical surface 9 of the fastener that contacts the outer wall 1. A pair of left and right elongated holes 10, 10 are formed in the vertical direction at intervals, and a notch or elongated hole 11, which is longer than the elongated hole, is further formed on the outside of the pair of elongated holes. The horizontal surface of the fastener is provided with a long hole 12 for fixing the bracket with a bolt, and when the anchor bolt cannot be driven through the long hole 10 at a predetermined interval, the anchor bolt can be inserted through the long notch or the long hole. A fastener for reinforced concrete walls that can be used to secure brackets.