JPH0722412Y2 - Curtain wall mounting structure - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for mounting a curtain wall, and more particularly to a structure for preventing damage to the mounting portion when the curtain wall is moved vertically or horizontally.

[0002]

2. Description of the Related Art As a mounting structure for a curtain wall, as shown in FIG. 3, an anchor bolt 2 projecting from the back surface of a curtain wall 1 made of a PC plate and an upper and lower part on the building body side through which the anchor bolt 2 is inserted. A structure is known that includes a bracket 3 having a long hole 3a formed in the direction, and a nut 4 that is screwed into an anchor bolt 2 protruding to the rear side of the bracket 3 to fix the curtain wall 1 to the bracket 3.

In this structure, the curtain wall 1
As the anchor bolt 2 relatively moves or rotates in the elongated hole 3a due to the movement in the vertical direction or in the rotation direction, the stress is absorbed, so that the vibration generated by an earthquake or a strong wind is released at this portion, and the curtain wall It prevents cracks from entering 1.

[0004]

By the way, recently, the PC plate constituting the curtain wall 1 tends to be large in size, and the area and weight per sheet are extremely larger than those in the past. On the other hand, if the mounting structure is increased in size or the number of mounting points is increased, the weight can be increased. However, the amount of movement such as movement or rotation of the curtain wall 1 is increased, and the impact force generated at that time is also increased. .

Therefore, when the size of the anchor bolt 2 is increased, uneven wear occurs due to sliding friction of the anchor bolt 2 with respect to the elongated hole 3a in the mounting structure, and the anchor bolt 2 is easily scraped off. There is a concern that the bolt 2 may be mechanically fatigued and may be broken at the weakest wear portion.

SUMMARY OF THE INVENTION The present invention is intended to solve the above conventional problems, and an object of the present invention is to provide a curtain wall mounting structure which is free from uneven wear at the insertion hole of the anchor bolt and breakage due to repeated impact. To do.

[0007]

In order to achieve the above object, the present invention provides an anchor bolt embedded in a curtain wall and projecting to the back of the curtain wall, and an anchor bolt inserted on the building frame side. In a mounting structure including a bracket having a long hole formed therein and a bolt for fixing the curtain wall to the bracket by being screwed to a protruding end of the anchor bolt on a back surface of the bracket, the long hole of the anchor bolt is provided. A sliding ring that is loosely fitted to the outer periphery of the insertion portion and that rolls by relative movement with respect to the elongated hole is provided.

[0008]

With the above construction, in the curtain wall mounting structure of the present invention, the sliding ring rolls each time the anchor bolt moves relative to the elongated hole, thereby exhibiting the function of one type of rolling bearing. Prevents partial wear from occurring.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. 1 and 2 show a curtain wall mounting structure according to the present invention. It should be noted that this mounting structure can be applied to any supporting mode of rocking, sway, and spandrel.

In the figure, an anchor bolt 12 is embedded in a curtain wall 10 made of a PC plate, and a screw portion 12a is formed at a protruding end of the anchor bolt 12 from the rear surface of the curtain wall 10.

On the other hand, on the building body side 14, a flat portion 16a of an L-shaped bracket 16 has bolts, nuts 17a,
It is fixed by 17b. The long hole 1 through which the anchor bolt 12 is inserted is provided in the vertical portion 16b of the bracket 16.
8 is formed in the vertical direction, the anchor bolt 12 is inserted through the flat washers 20 and the flat plate 22 arranged on the front and back of the bracket 16, and the nut 24 is screwed to the insertion end screw portion 12a. Accordingly, the curtain wall 10 is supported and fixed to the body side 14 via the bracket 16.

A sliding ring 26 is loosely fitted to the outer periphery of the insertion portion of the anchor bolt 12 into the elongated hole 18. The sliding ring 26 is made of a material such as stainless steel to prevent electrolytic corrosion, and its inner and outer circumferences are impregnated with a lubricating member such as graphite.

The outer diameter of the sliding ring 26 is the same as that of the elongated hole 18.
Of the anchor bolt 12 is slightly smaller than its minor diameter, its inner diameter is slightly larger than the outer diameter of the anchor bolt 12, and its height is set smaller than the thickness of the bracket 16, so that the anchor bolt 12 moves or rotates in the elongated hole 18. In such a state, the inner and outer circumferences are in contact with the outer circumference of the anchor bolt and the inner edge of the elongated hole 18 so as to be freely rolled.

Further, the anchor bolt 12 relatively moves or rotates in the elongated hole 18 by the vertical or rotational movement of the curtain wall 1 shown by the arrow in FIG.
Since the stress is absorbed, vibration generated by an earthquake or a strong wind is released at this portion to prevent the curtain wall 1 from being cracked. At this time, the sliding ring 26 rolls along the moving or rotating direction of the anchor bolt 12.
Anchor bolt 1 to function as a kind of rolling bearing
It is possible to prevent uneven wear such as shaving from occurring between the outer periphery of the second hole and the long hole 18.

In the embodiment, a stainless ring impregnated with a lubricating member is used as the sliding ring 26, but it goes without saying that an oilless bearing or the like may be used. Further, an R washer can be used instead of the flat plate 22.

[0016]

As described above in detail with reference to the embodiments, in the structure for mounting the curtain wall according to the present invention, the anchor bolt is loosely fitted to the outer periphery of the insertion portion with respect to the elongated hole, and moves relative to the elongated hole. Since a sliding ring that rolls is provided, the sliding ring rolls each time the anchor bolt moves relative to the elongated hole, and it functions as one type of rolling bearing, preventing uneven wear at this part. To do. This also prevents breakage of this portion. Therefore, according to the present invention, the safety and reliability can be improved especially in a curtain wall mounting structure in which the curtain wall is large and heavy and the sliding amount of the mounting portion is large.

[Brief description of drawings]

FIG. 1 is a side sectional view of a main part showing a curtain wall mounting structure according to the present invention.

FIG. 2 is a plan sectional view taken along the line AA of FIG.

FIG. 3 is a sectional view of a main part showing a conventional curtain wall mounting structure.

[Explanation of symbols]

 10 Curtain Wall 12 Anchor Bolt 14 Building Frame 16 Bracket 18 Long Hole 26 Sliding Ring

Claims (1)

[Scope of utility model registration request] 1. An anchor bolt embedded in a curtain wall and projecting to the rear surface of the curtain wall, a bracket on the side of the building body having a long hole for inserting the anchor bolt, and a rear surface of the bracket. In a mounting structure including a bolt for screwing the protruding end of the anchor bolt to fix the curtain wall to the bracket, the anchor bolt is loosely fitted to the outer periphery of the insertion portion with respect to the elongated hole, and moves relative to the elongated hole. The curtain wall mounting structure is characterized in that a sliding ring that rolls by means of is provided.