JPH09111931A - Support structure of exterior wall face material - Google Patents

Abstract

PROBLEM TO BE SOLVED: To make it possible to prevent threads of a bolt which connects both a face material and a support member from being damaged during their relative displacement and allow the bolt to move without loosening the nut in a method of constructing a curtain wall which supports the face material directly on a skeleton at the position at which four face materials are assembled without incorporating a frame material around there. SOLUTION: The shaft 41 of a bolt 4 is inserted into a bush 5 whose cross section is smaller than the area of an insertion hole 24 in the insertion hole 24 of a bolt support area of a support member 2. The length of the bush 5 in the longitudinal direction is made larger than the thickness of the bolt support area 23, thereby allowing the relative movement of the bolt 4 to the bolt support area 23 even in such a state that nuts 6 and 7 are fastened to a satisfactory extent.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a support structure for a face material for outer walls, which supports a face material such as glass constituting a wall surface of a curtain wall at a four corners thereof using a support member for a frame.

[0002]

BACKGROUND OF THE INVENTION Structure of a curtain wall in which a glass or other surface material used as a wall material of a curtain wall is directly supported by a skeleton without forming a frame material around the glass or other surface material. Since the supporting member used in the method is connected to each face member at a position where the four face members are gathered, the arms are extended in all directions from the axis fixed to the body as in Japanese Patent Laid-Open No. 5-239876. It is shaped and connected at the tip of the arm by a bolt that connects the connecting material fixed to the face material to the arm.

Similar to a curtain wall of a type in which a face member is fixed to a frame or is supported by the frame or a unit which is supported by a frame through a fastener as a unit, relative displacement with respect to the frame is caused by an earthquake. Because I have to be able to
It is necessary to absorb relative displacement between the support member fixed to the body and the face material.

Since the support member supports the face material by connecting the connecting material fixed to the face material to the bolt support portion formed at the tip of the arm through the bolt, the bolt is inserted as in the above example. By forming the insertion hole of the bolt support portion larger than the diameter of the bolt, relative displacement of the face member in the in-plane direction with respect to the support member is allowed.

In this case, the bolt is connected to the bolt support portion by tightening the nuts from both sides of the bolt support portion, but the screw thread of the bolt shaft portion is placed in a state where it can directly contact the inner peripheral surface of the insertion hole. Therefore, when the relative displacement occurs, the screw thread is damaged. Especially, the bolt inserted through the bolt support part that bears the load of the face material is always in contact with the inner peripheral surface of the insertion hole, so the lower surface of the screw thread. The side is easily worn.

Further, since the bearing surface of the nut or the washer is in contact with the surface of the bolt supporting portion, if the nut is overtightened, movement of the bolt, that is, in-plane displacement of the face material is restrained and in-plane force is applied to the face material. If the tightening is adjusted to the extent that it is not restrained, the nut may loosen.

The present invention proposes a support structure which prevents damage to the thread of the bolt during relative displacement and allows movement of the bolt without causing loosening of the nut.

[0008]

In order to allow relative movement of the bolt with respect to the bolt support portion of the support member, the insertion hole of the bolt support portion through which the bolt is inserted is formed larger than the diameter of the bolt. The shaft portion of the bolt is inserted into a bush having a cross section smaller than the area of the insertion hole in the insertion hole of the bolt support portion, and the screw thread of the bolt shaft portion is protected by not contacting the screw thread with the insertion hole.

The bush surrounds the bolt shaft portion and moves relative to the bolt support portion together with the bolt, so that the bolt shaft portion directly collides with the insertion hole of the bolt support portion of the support member during the relative movement. No matter what, the threads are protected.

Wear is also prevented because the bolt that bears the load of the face material is always kept in contact with the inner peripheral surface of the insertion hole of the bolt supporting portion.

According to a second aspect of the present invention, by making the axial length (thickness) of the bush larger than the plate thickness of the bolt supporting portion, a nut for tightly connecting the bolt to the bolt supporting portion is attached to the bolt supporting portion. It keeps them out of contact and allows the bolt to move relative to the bolt support even when the nut is completely tightened, preventing the action of in-plane force on the face material and loosening of the nut.

The bearing surface of the nut contacts the end surface of the bush,
Since the bolt support part does not normally contact, the bolt, together with the bush, fits inside the insertion hole regardless of the tightening of the nut.
It can move in the in-plane direction of the face material without resistance with respect to the bolt support portion.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The invention according to claim 1 is a shaft portion of a bolt 4 for connecting a face member 3 to a supporting member 2 fixed to a skeleton 1.
By inserting 41 into the bush 5, the shaft 41 is protected when the bolt 4 moves relative to the support member 2.

As shown in FIGS. 1 and 2, the support member 2 has a shaft 21 fixed horizontally to the body 1 and four arms 22 extending from the shaft 21 to the periphery thereof. , A plate-shaped bolt support portion through which the bolt 4 connected to the face material 3 is inserted
23 is formed, and the bolt 4 is connected to the bolt support portion 23 to support the face material 3. The face material 3 includes not only glass but also all the panels used as the wall material of the curtain wall.

As shown in FIG. 2, the support member 2 has a vertical surface 4
The face materials 3 are arranged at a position where the face materials 3 are gathered, and the face materials 3 are connected to the bolt supporting portions 23 of the arms 22. 4 arms 22
Of the two arms 22 above or below the axis 21
Bears the load of the face material 3 by supporting the bolts 4.

The bolt support part 23 has an insertion hole 24 through which the bolt 4 is inserted in the out-of-plane direction of the face material 3, and the shaft part 41 of the bolt 4 is bolted by nuts 6 and 7 located on both sides of the bolt support part 23. It is connected to the support portion 23.

The head 42 of the bolt 4 penetrates the face plate 3 and is connected to the connecting member 8 fixed thereto. The connecting member 8 has a concave portion into which the head 42 of the bolt 4 fits, and is fixed to the fixing portion 81 penetrating the face material 3 from the outdoor side and the fixing portion 81 while surrounding the head 42 of the bolt 4 from the indoor side. And the head 42 together with the fixed portion 81.
The fixing member 81 and the socket portion 82 are fitted to the head portion 42 of the spherical bolt 4 so that the face member 3 can be rotationally displaced around the center of curvature of the head portion 42 of the bolt 4. Connect to bolt 4.

The fixing portion 81 of the connecting member 8 is fixed to the face member 3 from the outside by the sealing material 9 filled around the connecting member 8, and the socket portion 82 is joined to the fixing portion 81 by welding or screwing.
The through hole of the face material 3 through which the fixing portion 81 penetrates is protected by the seal material 9. A continuous screw is cut on the outer periphery of the fixing portion 81 and the socket portion 82, and the connecting member 8 is fixed to the face member 3 from the indoor side by the nut 10 screwed to the screw. Nut 10
The sealing material 11 is also filled between the face material 3 and the face material 3 to protect the indoor surface of the face material 3.

The shaft portion 41 of the bolt 4 is inserted into the insertion hole 24 of the bolt support portion 23 of the support member 2 in a state of being inserted into the bush 5, and the nuts 6 and 7 on both sides of the bolt support portion 23 are tightly connected to each other. It is connected to the support portion 23. The nut 6 near the head 42 of the bolt 4 is sandwiched in advance with the bush 5.

The cross-sectional size of the bush 5 depends on the bolt support portion.
It is smaller than the area of the insertion hole 24 of 23, and the bush 5 is the bolt 4
By surrounding the shaft portion 41 of the bolt 4 relative to the bolt support portion 23 together with the bolt 4 in the insertion hole 24, it is possible to avoid the shaft portion 41 of the bolt 4 from colliding with the inner peripheral surface of the insertion hole 24, Shaft
Protects 41 threads. When the bush 5 is cylindrical as shown, the outer diameter is smaller than the inner diameter of the insertion hole 24.

In the case where the bolt 4 has a role of normally bearing the load of the face material 3 like the bolt 4 connected to the bolt support portion 23 below the shaft 21 of the support member 2 in FIGS. The bush 5 keeps the shaft portion 41 of the bolt 4 out of contact with the inner peripheral surface of the insertion hole 24 at all times, and prevents the shaft portion 41 from being worn.

It is ideal that the shaft portion 41 of the bolt 4 is inserted between the thread of the bolt 4 and the inner peripheral surface of the bush 5 without any gap. If there is a possibility of impacting the threads at the time of collision, the impact can be avoided by filling with a filling material such as a sealing material,
If a female screw is formed on the inner peripheral surface of the bush 5 and the shaft portion 41 is screwed into the bush 5, the screw thread is completely protected.

As shown in FIG. 2, the insertion hole 24 of the bolt supporting portion 23 is provided with clearances in two directions in the plane so that the bush 5 can move relative to the supporting member 2 in the plane of the face material 3. As described above, of the four arms 22, the two arms 22 above and below the shaft 21 bear the vertical load of the face material 3, and are supported by the two arms 22. The bush 5 of the bolt 4 connected to the face material 3 is a bolt support portion.
It becomes a shape that is placed on the inner peripheral surface of the insertion hole 24 of 23.

The bushes 5 of the bolts 4 connected to the remaining two face members 3 are in a floating state in the insertion holes 24 of the bolt support 23, and the bushes 5 have clearances on both sides in the horizontal direction and both sides in the vertical direction. By ensuring the above, the face material 4 freely slides and rocks against the support member 2 in the event of an earthquake, and no in-plane force acts on the face material 3.

According to the invention of claim 2, in the above invention,
As shown in FIG. 4, which is a partially enlarged view of FIG. 1, the axial length (thickness) L of the bush 5 is made larger than the plate thickness T of the bolt support portion 23, and the nuts 6 and 7 are completely tightened. Even in this state, a clearance is secured between the bearing surfaces of the nuts 6 and 7 and the surface of the bolt support portion 23, and the bolt 4 can freely move relative to the bolt support portion 23.

When the nuts 6 and 7 are completely tightened, the bearing surfaces of the nuts 6 and 7 contact the end surface of the bush 5 and do not normally contact the surface of the bolt supporting portion 23.
Can move together with the bush 5 in the insertion hole 24 with respect to the bolt support 23 without resistance. Therefore, the nuts 6 and 7 are not loosened, and the in-plane force does not act on the face material 3.

[0027]

According to the first aspect of the invention, since the shaft portion of the bolt is inserted into the bush having a shape smaller than the area of the insertion hole in the insertion hole of the bolt support portion, the bolt moves relative to the bolt support portion. Even when doing so, it does not directly collide with the inner peripheral surface of the insertion hole of the bolt support portion, and the thread of the bolt shaft portion is protected.

Since the bolt that bears the load of the face material is always kept in a state where it does not come into contact with the inner peripheral surface of the insertion hole of the bolt supporting portion, abrasion of the screw thread is also prevented.

According to the second aspect of the invention, since the axial length of the bush is made larger than the plate thickness of the bolt support portion, even if the nut for fastening the bolt to the bolt support portion is completely tightened, the bush is supported against the bolt support portion. The relative movement of the bolt is allowed, and the action of the in-plane force on the face material can be prevented while preventing the nut from loosening.

[Brief description of the drawings]

FIG. 1 is a vertical cross-sectional view showing a relationship between a support member and a face material.

FIG. 2 is an elevation view of FIG.

FIG. 3 is a plan view of FIG. 2;

FIG. 4 is a partially enlarged view of FIG. 1 showing a second aspect of the invention.

[Explanation of reference numerals] 1 ... Skeletal structure, 2 ... Supporting member, 21 ... Shaft, 22 ... Arm, 23 ... Bolt supporting portion, 24 ... Insertion hole, 3 ... Surface material,
4 ... Bolt, 41 ... Shaft, 42 ... Head, 5 ... Bush, 6 ... Nut, 7 ... Nut, 8 ... Connecting material, 81 ...
… Fixed part, 82 …… Socket part, 9 …… Seal material, 10 ……
Nut, 11 …… Seal material.

Claims (2)

[Claims] 1. A support member fixed to a body and having an arm extending over the periphery, a connecting member fixed to a face member forming an outer wall surface, and a bolt connecting the connecting member and a bolt support portion of the supporting member. A support structure for a surface material for an outer wall, wherein the shaft portion of the bolt is inserted into a bush having a cross section smaller than the area of the insertion hole in the insertion hole of the bolt support portion through which the bolt shaft portion is inserted. Supporting structure for face material. 2. The support structure for a face material for an outer wall according to claim 1, wherein the axial length of the bush is larger than the plate thickness of the bolt support portion forming the insertion hole.