JPH0348961Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" The present invention relates to a round steel bar brace member used to strengthen wooden structures and frames of wooden buildings.

"Prior art" In order to convert horizontal force caused by wind pressure, earthquake force, etc. into tensile or compressive force, braces are constructed around the external walls and internal partition walls of wooden structures and wooden buildings to deform the frame. Conventionally, 4-meter pieces of square 2-split or 3-split cedar are used as diagonal members by sandwiching them between pillars, sheds, etc.

Literature (1) Edited by the Architectural Institute of Japan: JASS 11 Woodwork Illustrated, published by Maruzen (2) Edited by the Architectural Institute of Japan: Architectural Work Standard Specifications/
Commentary on the same, published by Maruzen (3) Haruichi Kano: Architectural Construction Method Pocketbook,
``Problems to be Solved by Ideas'' published by Ohmsha In the conventional technology, a handle is formed at the end of the brace member, and the handle is fitted into a handle hole carved into the structural wood to be engaged. However, many steps and man-hours are required to process the handles and holes, and to construct the frame, raising construction costs.

"Means for solving the problem" A certain range of the other end of the main rod part 1 of the round bar steel brace is bent into a long L-shape to form the hanging piece 3, and the tip of the hanging piece is formed into a short L-shape. The pressure contact claw 4 is bent into a letter shape, and the inner dimension A of the hooking piece 3 between the pressure contact claw 4 and the brace main rod portion 1 is smaller than the dimension B of the free press hole 7 penetrating through the structural wood. In addition to making it larger, the height dimension C of the pressure contact claw 4 is the inner diameter dimension of the free press hole.
This is an attempt to solve the problem by making it equal to or slightly larger than D'.

Embodiments Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings. However, the structure described in the example,
The present invention is not limited to the shape, relative arrangement, etc., unless specifically described.

FIG. 1 is a perspective view of an embodiment, also showing the relationship with structural timber, FIG. 2 is a partial vertical sectional view, and FIG. 3 is a partially enlarged perspective view of another embodiment. Figures 1 and 2
As shown in the figure, the round bar steel brace member 1 is formed by bending a certain range of the end of the main brace rod 2 on the side that engages with the structural wood 6 into a relatively long L-shape, so that the brace of the structural wood 6 A hanging piece 3 is formed to pass through a loose insertion hole 7 bored from the attachment side 6' to the back side 6'' of the brace attachment. It protrudes toward the surface 6'' and bends in the direction of the rotational moment that acts on the hanging piece 3 in conjunction with the tensile force that acts on the brace main rod 2, so that the crimping surface 4' is on the back side of the structural timber 6 where the brace is attached. A pressure contact claw 4 bent into a relatively short L-shape is formed that contacts the surface 6''.The inner dimension A of the hooking piece 3 between the pressure contact claw 4 and the brace main rod portion 2 is equal to the structural wood 6. The thickness is slightly larger than the thickness dimension B between the brace attachment side surface 6' and the brace attachment back side 6''.
A turnbuckle 5 is screwed onto the other end of the main brace rod portion 2, and the other round bar steel brace member 1' is connected via the turnbuckle 5.

The diameter of the brace main rod part 2 and the hanging piece 3 is D, and the inner diameter of the loose insertion hole 7 is D', and as shown in FIG. If the intersecting angle between the crimp surface 4' and the brace mounting rear surface 6" when it comes into contact with the surface 6" is Q, then the relationship between the height C of the crimp claw 4 and the inner diameter D' of the loose insertion hole 7 is C= (A-B)/Q+D D'>BQ+D Therefore, each dimension can be determined, but in summary, the height dimension C of the pressure contact claw 4 should be equal to or slightly larger than the inner diameter dimension D' of the free insertion hole. be. The round steel bar brace member 1 of the present invention, which can be used for general wooden structures and wooden buildings, has a diameter D of the main brace rod 2 and a hanging piece 3 of 9 mm or 12 mm, and a thickness dimension B of the structural wood 6.
105 mm to 120 mm, the inner diameter D' of the loose insertion hole 7 = 18 mm, and the height dimension C of the pressure contact claw 4 = 20 mm. In FIG. 2, reference numeral 8 denotes a washer that is fitted into the portion where the loose insertion hole 7 opens in the brace attachment side surface 6', and is used to support the lower edge of the hook piece 3. In another embodiment shown in FIG. 3, the crimp surface 4 of the crimp claw 4 is a flat crimp surface
It is to be formed.

"Operation" As shown in FIG. 2, when the hanging piece 3 is passed through the loose insertion hole 7 and the turnbuckle 5 is rotated to apply a tensile force to the brace main rod part 2, the loose insertion hole 7 is Therefore, the hooking piece 3 tilts downward from the pressure contact claw 4 toward the brace main rod portion 2, and the pressure contact claw 4 also rotates toward the structural timber 6, and the pressure contact surface 4' of the contact claw 4 is attached to the brace. The hooking piece 3 is restrained by coming into contact with the back surface 6'', and a reaction force is generated on the surface 4', and the hanging piece 3 is fixed to the structural timber 6. However, by rotating the turnbuckle 5, the hanging piece 3 is fixed to the brace member 2. A tensile force is generated and acts so that the round bar steel brace member 1 is tensioned on the frame.

"Effect of the invention" With the above-described structure and operation, the round bar steel brace member of the present invention can be installed by simply passing the hanging piece 3 through the loose insertion hole 7 of the structural timber 6, and then attaching it to the turnbuckle 5.
The brace member can be tensioned in a short period of time by simply rotating the handle, and since it does not require processing of the handle and handle hole as in the past, it is robust against wind pressure and seismic force. It is highly effective in providing safe wooden structures and wooden buildings at low prices.

[Brief explanation of drawings]

Fig. 1 is a perspective view of the embodiment of the present invention showing the relationship with structural timber, and Fig. 2 is a partial longitudinal section showing the state in which the round bar steel brace member 1 of the embodiment of the invention is fixed to structural timber. Figures 3 and 3 show another embodiment of the hanging piece 3.
It is a partially enlarged perspective view showing. DESCRIPTION OF SYMBOLS 1... Round bar steel brace member, 2... Brace main rod part, 3... Hanging piece, 4... Pressure contact claw, 4'... Pressure surface.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) A certain range of the other end of the main rod portion 1 of the round bar steel brace is bent into a long L-shape to form a hanging piece 3, and the tip of the hanging piece is A pressure contact claw 4 bent into a short L-shape is formed, and the inner dimension A of the hanging piece 3 between the pressure contact claw 4 and the brace main rod portion 1 is equal to the dimension B of the loose insertion hole 7 penetrating the structural wood. In addition to being made larger, the height dimension C of the pressure contact claw 4 is made equal to or larger than the inner diameter dimension D' of the free insertion hole. (2) The round bar steel brace member according to claim 1, wherein the pressing surface of the pressing claw with the structural wood is formed as a flat pressing surface. (3) The round bar steel brace member according to claim 1, wherein the hanging piece is formed by bending the end of the main rod portion of the round bar steel brace at a right angle.