JP2987563B2 - Wall connection structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a method for forming a formwork at an appropriate distance from, for example, a required wall formed as an outer surface of an existing concrete foundation or a landslide prevention wall.
The present invention relates to a wall connecting structure between the wall body and the formwork, which is used when a new concrete foundation is constructed using the formwork.

[0002]

2. Description of the Related Art A formwork is erected at an appropriate interval along an existing concrete structure such as a concrete foundation or a wall such as a water stop wall and a landslide prevention wall, and a new form is formed using this formwork. In the case of constructing a concrete structure or a wall body, as a wall connecting means for properly connecting the existing wall body and the formwork, there is a wall connection shown in FIG. 3 proposed by the present applicant. .

The above prior art will be described with reference to the drawings. In FIG. 3, reference numeral 1 denotes a tube having constricted portions 11, 11 having female screws 12, 12 formed on both sides thereof over a required length. Reference numeral 2 denotes a constricted portion 11 of the tube 1 and a frame B. The second male screw rod 3 is fixed to the wall A, and the first male screw rod 5 screwed into the constriction 11 on the side of the tube 1 is screwed with the constriction 11 on the side of the tube 1. It is a fitting for preventing co-rotation that is fitted over the rod 2.

[0004] In order to apply each of the constituent members, first, the first male screw 3 and the head 32 of the first male screw 3 are welded to the surface of a metal body such as an H-shaped steel material on the wall A. 4 to stand. Thereafter, the first male screw 3
One of the constrictions 11 of the tube 1 is screwed into the tube 1, and the other anti-corotation metal fitting 5 is inserted over the other constriction 11 of the tube 1 and the second male screw rod 2. Male screw rod 2 into frame B
Into the other constricted part 11.

In order to fix the wall connection assembled in this way with the metal member 5 for preventing rotation, the substantially W-shaped metal member 5 is hit with a hammer or the like from the left side in the figure to be deformed into the form of a dotted line position F. . At this time, each loose fitting hole in the co-rotation prevention metal fitting 5 is combined with the bent protruding portion at the center of the metal fitting 5 to act so as to press the second male screw rod 2 and the other narrowed portion 11 with each other. The relative rotation between the second male screw rod 2 and the female screw 12 of the other constricted portion 1 is suppressed.

[0006] In the case where the work is carried out by a normal wall connection to which such a co-rotation preventing bracket 5 is not applied, the frame B is attached to the locking nut 7 previously screwed into the second male screw rod 2. When the tightening nut 6 is firmly screwed in between, the second male screw rod 2 and the locking nut 7 rotate together at the time of screwing, and the second male screw rod 2 is turned into the female screw 12 of the constricted portion 11. And the predetermined space between the wall A and the frame B cannot be secured, resulting in improper construction.

[0007]

Therefore, in the above-mentioned prior art, a co-rotation prevention metal fitting 5 having a complicated structure as shown in the drawing is an essential member. In order to obtain a tightening action of the metal fitting 5, The use of a hammer or the like requires a certain level of skill of the worker, and the workability is poor at a site where the gap between the wall A and the frame B is narrow.
The present invention has been made in view of the above-mentioned problems of the prior art, and has a simple structure with a small number of parts, its manufacturing cost is extremely low, and the construction work is extremely simple. An object of the present invention is to provide a wall connecting structure having a co-rotation preventing means.

[0008]

According to the present invention, a wall having a female screw on both sides and one side fixed to the wall and another side connected to one side of the pipe are provided. A first male screw rod screwed to the female screw and a second screw screwed on one side to the frame and the other side screwed to the female screw on the other side of the tube.
A wall connection structure that connects the wall body and the frame body at predetermined intervals by a male screw rod, and forms a deformed portion in a part of the female screw on the second screw rod side of the tube. When screwing one end of the second screw rod beyond the deformed portion of the female screw to generate screw resistance, and tightening the frame to the other end of the second male screw rod with a fastener. The tightening tool is properly tightened by increasing the screwing resistance between the female screw and the second male screw rod of the tube body more than the tightening torque of the tube body, and the wall body and the frame body are maintained at a predetermined distance. It is a structure characterized by being connected.

[0009]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 shows the entire structure of the wall connection according to the present invention, in which a first male screw rod 3 is erected and fixed to a metal part such as an H-shaped steel material, which is a member of the wall A, by welding 4. The first male screw rod 3 and the second male screw rod 2 are inserted into the frame B so that the first male screw rod 3 and the second male screw rod 2 form the narrow portions 11, 11 formed on both sides of the tube 1. Female screw 1
The nuts 6 and 7 are used to connect the nuts 6 and 7 so that the wall A and the form B are positioned so as to maintain a predetermined interval.

The second male screw rod, which is a connecting member between the mold body B and the tube 1, is not necessarily limited to the illustrated one, but may be a single male screw rod having male screws at both ends. Alternatively, two or more rods may be connected by another connecting tool. Further, the end of the tube 1 on the wall A side does not necessarily need to be a narrowed portion. A desired portion of the constricted portion 11 formed on one side of the tubular body 1 is formed with a recess 13 outside the constricted portion 11 by, for example, hitting with a punch or pressing. Convex part 14
That is, a deformed portion is formed.

FIG. 2 shows that a concave portion 13 and a convex portion 14 are formed on the outside and inside of one of the narrowed portions 11 of the tube body 1 (the convex portion 14 is formed by deformation of the concave portion 13). FIG. 4 is an enlarged view of a state in which the female screw 12 of the constriction portion 11 and the male screw 21 of the second male screw rod 2 are screwed together, and the convex portion 14 formed at the bottom of the groove of the female screw 12 is the male screw. 2
1 shows a state in which the tip of the mountain portion is pressed to be partially deformed.

The step of connecting the frame B to the wall A by connecting the walls composed of such constituent members is as follows. First, a metal part such as an H-shaped steel material, which is a member of the wall A, is welded 4 to the periphery of the head 32 of the first male screw rod 3 to set the first male screw rod 3 on the surface of the metal part. Set up. Then, separately, for example, the second male screw rod 2 in which the locking nut 7 is screwed into the female screw 12 in which the convex portion 14 is formed in the female screw 12 of the constricted portion 11 on one side of the tube 1 in advance. The male screw 21 is connected to the protrusion 1
4 is screwed and connected against a large screwing resistance force.

In this case, the projecting amount of the projection 14 is, for example, about 0.3 to 0.5 mm, and the tip of the male screw 21 inserted by the projection is deformed or at least substantially deformed. It is only necessary that the resistance is sufficient to generate the above-mentioned resistance. The female screw 12 of the squeezed portion 11 at the other end of the tube 1 in which one end of the second male screw rod 2 is screwed into the one end with a large screwing resistance.
By screwing the male screw 31 of the first male screw rod 3 therein, the first male screw rod 3 is securely connected to the first male screw rod 3. afterwards,
After adjusting and positioning the wall A and the frame B at a desired interval by the loosening nut 7, the tightening nut 6 is screwed into the second male screw rod 2 which is inserted into the frame B and protrudes, and the frame is screwed into the frame. The body B is tightened and fixed.

In general, such a tightening nut 6
In the present invention, the locking nut 7 and the second male screw rod 2 are rotated together at the time of tightening. The convex portion 14 formed in the female screw 12 of FIG. 11 acts on the tip of the screw thread of the male screw 21 of the second male screw rod 2 to generate a large screwing resistance. In addition, the second male screw rod 2 is further screwed into the tubular body 1 so that the distance between the wall A and the frame B does not become smaller than desired, and proper concrete construction is achieved.

The above-described construction relating to wall connection is merely an example, and it is apparent that the procedure for assembling each member constituting the wall connection may be changed according to the situation at the site and other conditions. Alternatively, one end of the first male screw rod 3 may be fixed to the wall surface of the wall A such as concrete by other means. Still further, instead of the first male screw rod 3 as shown in FIG. 1, a rod having a male screw portion at the tip of a long rod is employed to form the pipe 1 between the wall A and the frame B. It is also possible to change the installation part.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described in detail with respect to a threaded connection between a tube and a male screw rod in a wall connection according to the present invention.
Both sides of a straight metal pipe with a length of about 16 mm and a diameter of 11 mm
In a tubular body having a female screw provided in the narrowed portion, a convex portion projecting about 0.3 to 0.5 mm is formed at the bottom of the groove of the female screw by using a press from the outside of the narrowed portion. In advance, the female screw is threadedly connected to a metal rod having a diameter of 7 mm using a male screw rod which is threaded at a pitch of about 1.4 mm. This connection was achieved by applying a screwing holding portion from the distal end of the male screw rod to the middle thereof to generate a strong screw input. When the male screw rod thus screwed and connected is tightened with the nuts for tightening and locking through the frame, the male screw rod and the locking nut do not rotate together, and the desired function is achieved. Achieved. This is because the screwing torque of the male screw rod which is screwed against the deformed portion of the female screw of the tube is considerably larger than the necessary tightening torque of the tightening tool.

[0017]

The wall connection of the present invention having the above-mentioned structure has a number of excellent advantages such as a simple structure with a small number of parts, improvement in workability in construction, etc., and reduction in product cost. It has.

[Brief description of the drawings]

FIG. 1 is a schematic view showing an entire structure related to wall connection according to the present invention.

FIG. 2 is an enlarged cross-sectional view showing a screwed state of a female screw portion, a screw portion of a male screw rod, and a screw thread portion in a narrowed portion of a tube body end portion in a wall connection according to the present invention.

FIG. 3 is a schematic view showing a conventional wall connection.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Tube 2 2nd male screw rod 3 1st male screw rod 11 Constriction part 14 Convex part A Wall B Frame

Claims (3)

(57) [Claims] 1. A tube having a female screw on both sides and a first male screw having one side fixed to a wall and the other side screwed to a female screw on one side of the tube. The wall and the frame are separated by a predetermined distance by a rod and a second male screw rod whose one side is fastened and fixed to the frame and the other side is screwed to a female screw on the other side of the tube. And a deformed portion is formed in a part of the female screw on the side of the second screw rod of the tubular body, and one end of the second screw rod is deformed in the female screw. By screwing over the part, screwing resistance is generated,
By increasing the screwing resistance between the female screw of the tubular body and the second male screw rod than the tightening torque when tightening the frame to the other end of the second male screw rod with the tightening tool, Characterized in that the walls are properly tightened so that the wall and the frame are maintained at a predetermined distance. 2. The tube applied to a wall connection according to claim 1, wherein at least one side of the tube forming a female screw is formed as a constriction. 3. The deformed portion provided on a part of the screw of the tubular body is a convex portion at a groove bottom of the female screw corresponding to a concave portion formed by pressing or the like from outside the tubular body. The tube according to claim 2.