JPH11270132A - Batten fastening tool - Google Patents

Abstract

PROBLEM TO BE SOLVED: To surely hold batten by slanting at least one-slide batten contact part of a batten presser arm fixedly secured at a nearly right angle to a cylindrical body in which a fastening bolt is inserted through by a fixed angle from a right angle against the axial direction. SOLUTION: The middle part of batten presser arm 2 of U-section is fixedly secured to a cylindrical body 1, and a hook part 5 is formed on the extreme end of one-sided arm part. A batten contact part on one-sided arm part 2a is formed so as to be a slant part 2c of about 2 degrees from a right angle against the axial direction of the cylindrical body 1. The bore of the cylindrical part 1 is formed so as not to have so much clearance against the outer diameter of a fastening bolt 10. The slant can be provided on the batten contact part of the other arm part 2b. Hereby, when two battens 20, 21 are fastened, while the whole batten fastening tool is a little slanted by the slant part 2C, the batten 21 can be pressed with the arm part 2b on the other end. Consequently, even when the arm 2 is slanted by the portion of the shake between the cylindrical body and the fastening bolt, the batten 21 can be surely fastened.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an instrument for holding a thick material for supporting a concrete casting formwork when constructing a concrete building.

[0002]

2. Description of the Related Art When building a concrete building,
Place the formwork on both sides of the place where the concrete should be cast,
In order to prevent the form from being deformed by the pressure at the time of concrete casting, the end is fixed to the form with a fastener along a square or round material called a batter.

A conventional fastening tool is disclosed in
There is one described in Japanese Patent No. 146027. this is,
As shown in FIG. 5, the cylindrical body 32 that is loosely fitted to the coupler rod 35
Is provided at one end thereof with an arm 33 intersecting with the cylindrical body 32 and having a hook portion 39 at the end thereof, and a fitting groove of a wedge plate 42 which is driven into the hole 41 of the coupler rod 35 in the longitudinal direction of the outer end surface of the arm 33. Reference numeral 40 denotes a fastening member for a steel pipe end thick material in which a protrusion 44 is provided on the outer peripheral surface on the other end side of the cylindrical body 32 to abut on the end thick material 37.

[0004] Japanese Patent Application Laid-Open No. Hei 5-79182 discloses that
The fastening device shown in FIG. 6 is disclosed. The first holding member 55 having the first holding portion 58 capable of holding one first thick member in contact with the weir plate, and the first holding member 55
A second holding member having two second holding portions 61 capable of holding one or two second end thick members rotatably fitted to the first thick end member and being in contact with the first thick end member 59.

[0005]

However, in the above-mentioned conventional cantilever type fasteners, since the surfaces in contact with the thick end pieces are parallel, a bending moment is applied to the arm for holding the thick end pieces. Join and warp your arms. In addition, since the diameter of the cylindrical hole of the fastener is considerably larger than the outer diameter of the main body at the time of tightening, there is play and the arm is easily warped. In the conventional example shown in FIG. 5 described above, the wedge 42 is driven in to suppress the warp.
The number of parts increases and the cost also increases.

[0006] A force is applied in the direction of pushing the thick corner material outward from the above two points, and the thick corner material cannot be held properly. 2
Also in the case of a book, the central portion is likely to be warped and is difficult to hold.

Therefore, the problem to be solved by the present invention is as follows:
Even if a bending moment is applied to the arm in the case of one thick piece, the holding of the thick piece is ensured, and even when the two thick pieces are tightened, the other thick piece can be securely held. It is to provide an end clamp.

[0008]

In order to solve the above-mentioned problems, a thick-member fastening tool according to the present invention includes an intermediate portion of a thick-member holding arm in a direction substantially perpendicular to a cylinder into which a fastening bolt is inserted. In the fixed end thickener fastening tool, at least one end thick end contact portion of the end thick member holding arm is inclined by 1 to 3 degrees from a right angle to the axial direction of the cylindrical body. .

[0009] In the thick-member fastening tool, the inclined portions can be formed at both the thick-member contact portions of the thick-member holding arm.

[0010] Also, at the end of the thick material holding arm,
It is also possible to provide an arc-shaped concave portion for receiving the round end thick member, and also to serve as a fastening tool for both the corner end thick member and the round end thick member.

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be specifically described below with reference to embodiments shown in the drawings. FIG.
1 shows a first embodiment of the present invention, wherein (a) is a front view,
(B) is a side view. In FIG. 1, reference numeral 1 denotes a cylindrical body through which a fastening bolt 10 is inserted, 2 denotes an end-shaped material holding arm having a U-shaped cross-section having an intermediate portion fixed at welding portions 3 and 4 in a direction substantially perpendicular to the cylindrical body 1; 5 is a hook formed at the tip of one arm 2a, 10a is a flange of a fastening bolt 10, 11
Is a nut, 12 is a separator bolt, 12a is its flange, 20, 21 are thick ends, and 22 is a formwork.

In the first embodiment, the thick end contact portion of one of the arms 2a is inclined by about 2 degrees with respect to the axial direction of the cylindrical body 1 at an angle of about 2 degrees, that is, at an angle of about 88 degrees. It is formed. In addition, the hole diameter of the cylindrical portion 1 is made so as not to have a gap with respect to the outer diameter of the tightening bolt 10, so that the play is reduced. The inclination is set to about 2 degrees in consideration of play inevitable in manufacturing. When you hold the edge material 20 with a cantilever,
Although the arm portion 2a is slightly warped, the arm portion 2a is sufficiently within two degrees, so that the thick end member 20 can be held straight and properly.

According to the first embodiment, two thick ends 20,
When the screw 21 is tightened, the arm clamp 2b at the other end is slightly tilted due to the inclined portion 2c of about 2 degrees, and the entire end fastener is slightly tilted.
, So that it is easy to hold it properly.

[0014]

FIG. 2 shows a second embodiment of the present invention. In contrast to the structure of the first embodiment, an inclined portion of about 2 degrees is also provided at the contact portion of the other arm portion 2b with the thick end. 2c is provided. In this case, the inclination angle is set to 1 to 2 degrees.

FIG. 3 shows a third embodiment of the present invention. In the third embodiment, a hook 5 is provided at the tip of the other arm 2b in addition to the structure of the second embodiment.

FIG. 4 shows a fourth embodiment of the present invention. In contrast to the configuration of the first embodiment, a circular thick material is provided at the thick material contact portions of the arms 2a and 2b. And an arc-shaped concave portion 2d for receiving the light. In the fourth embodiment,
Since there is also a straight portion in the end thick material abutting portion, it is needless to say that the end thick material abutment portion can also be used for a square end thick material as in the first embodiment.

[0017]

As described above, according to the present invention, at least one end of the thick member pressing arm is inclined at an angle of 1 to 3 degrees with respect to the axial direction of the cylindrical body. As a result, the moment of the cantilever is applied to the arm when tightening one thick end member, and even if the arm is tilted by the amount of play between the cylinder and the tightening bolt, the end portion of the end member is abutted. It is almost parallel to the surface of the thick material, and the thick material can be securely tightened. When tightening the two thick ends, the thick end contact portion of the other arm tightens the other thick end toward the center, so both the thick ends can be securely fixed. .

[0018] Further, by forming the inclined portions at both the thick material contact portions of the thick material pressing arm, the tightening is ensured. Furthermore, by providing an arc-shaped concave portion for receiving the round end thick member in the end end contact portion of the end thick member holding arm, it can be used for both the square end thick member and the round end thick member.

[Brief description of the drawings]

FIG. 1 shows a first embodiment of the present invention, wherein (a) is a front view and (b) is a side view.

FIG. 2 is a front view showing a second embodiment of the present invention.

FIG. 3 is a front view showing a third embodiment of the present invention.

FIG. 4 is a front view showing a fourth embodiment of the present invention.

FIG. 5 is a sectional view showing an example of a conventional fastener.

FIG. 6 is a perspective view showing another example of the conventional fastener.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Cylindrical body, 2 thick arm holding arms, 2a, 2b arms, 2
c Inclined part, 2d concave part, 3, 4 welded part, 5 hook part,
10 fastening bolt, 10a flange, 11 nut,
12 Separator bolt, 12a Flange, 20, 21
Thick wood, 22 formwork

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Yoshihiro Yasuda 6-4-19, Hakozaki Futo, Higashi-ku, Fukuoka City, Fukuoka Branch (72) Inventor One person Terada 2-174 Matsuki, Nakagawa-machi, Chikushi-gun, Fukuoka Prefecture Fukuoka Equipment Sales Co., Ltd.

Claims (3)

[Claims] 1. A thick member fastening tool having an intermediate portion of a thick member holding arm fixed substantially perpendicularly to a cylindrical body through which a fastening bolt is inserted, wherein at least one end of the thick member holding arm is fixed. A thick material fastening tool, wherein a material contact portion is inclined by 1 to 3 degrees from a right angle to an axial direction of the cylindrical body. 2. The end thickener fastening device according to claim 1, wherein inclined portions are formed in both end thick material abutting portions of the thick end pressing arm. 3. The fastening device according to claim 1, wherein an arc-shaped recess for receiving a round end material is provided in the end material contact portion of the end material holding arm. .