JP2584051Y2 - Concrete formwork fastener for misalignment adjustment of driving formwork - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a concrete form fastener for adjusting the misalignment of a driving form.

[0002]

2. Description of the Related Art Conventionally, in the case of a driving form used for constructing an outer wall of a building or the like, a panel is sometimes misaligned when assembling the same, which hinders the appearance of the building. This misalignment is usually caused by the outer surface of the panel, which is to be held down by the flap material, being separated from the flap material and entering (submerging) inside.

[0003]

[Problems to be Solved by the Invention] The difference between the panels needs to be corrected before placing concrete, but at present there is no simple correction means, especially when the panels are found after the assembly of the formwork is completed. Are extremely difficult to modify. The present invention is intended to solve such a problem,
It is intended to make it possible to easily perform accurate adjustment.

[0004]

In order to achieve the above object, the present invention provides a nail anchor 1 comprising a rod 11 which is inserted into and engaged with a through hole a formed in a panel A. At the tip of the rod body 11, a locking piece 2 which is automatically locked after insertion is attached, a groove 15 for stripping is provided in the middle part, and at the rear end, One end of a concrete formwork fastener body 3 composed of a screw rod 31 is detachably connected to the concrete formwork fastener body 3, and a buckle washer 4 is movably fitted to the concrete formwork fastener body 3. Characterized in that a nut 5 for tightening the material washer is screwed.

[0005]

With the above construction, after assembling the panel A and assembling the driving formwork, before placing the concrete, first place the panel A in a place where misalignment occurs between the panels A. A through hole a is appropriately drilled in the panel A by a drill at the center of the core, that is, in the middle of the side wall B composed of two parallel single tubes, and the nail anchor 1 is inserted into the through hole from the outside from the tip. I do. As a result, the locking piece 2 automatically becomes locked inside the panel A, and the locking piece engages with the inner edge of the through-hole a to prevent it from falling off. Next, the concrete form fastener main body 3 is connected to the rear end of the nail anchor 1, the nut 5 is screwed, and the washer 4 was laid flat.
Then, the panel A is pulled out by the reaction force, and is brought into contact with the flap B. In other words, by making the contact with the flapping material B uniformly, the misalignment based on the flapping material B is eliminated. The concrete anchor body 3 may be connected to the rear end of the nail anchor 1 in advance, and the nail anchor 1 may be inserted into the through hole a. After that, concrete is poured inside panel A,
After the development of the predetermined strength, the scrap materials etc. are dismantled and removed,
The body 3 of the concrete form clamp is removed, and the rear end of the nail anchor 1 is cut off and cut off with the groove 15 for cutting off, and a required surface treatment is performed. Note that the rear end of the nail anchor 1 may be cut off while the concrete form fastener body 3 is attached, and then the rear end may be removed from the concrete form body 3.

[0006]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention. In the drawing, reference numeral 1 denotes a nail anchor which is inserted into and engaged with a through hole a formed in a panel A, and 2 is pivotally attached to the tip of the nail anchor by its own weight so as to be in a locked state. The locking piece 3 is a concrete form fastener main body detachably screwed and connected to the nail anchor, 4 is a buckle washer movably fitted to the concrete form fastener main body, and 5 is It is a nut screwed into a concrete formwork fastener main body to tighten the washer for washer.

In the nail anchor 1, one half of the rod body 11 in the axial direction of the bar is inserted into the insertion part 12, and the other half is formed into the screw part 13, and a groove 15 for stripping is provided around the end of the insertion part 12. . Also, a slit 16 is inserted into the insertion portion 12 from the tip to form a bifurcated insertion portion, and a small strip-shaped locking piece 2 is disposed at the tip of the cut 16 and is rotatable with a pin 14. It is pivoted. The locking piece 2 performs the above-mentioned pivoting attachment at an intermediate portion thereof and at a position shifted to one side in the axial direction of the material, and automatically rotates so that the longer side becomes lower due to the imbalance of the weights having different lengths. I am trying to get it. The locking piece 2 has a through hole a formed in the panel A together with the nail anchor insertion portion 12 so that the axial direction of the material is aligned with the nail anchor 1.
The pin 14 is inserted horizontally. When this insertion is deepened and the locking piece 2 reaches the other side of the through hole a, the locking piece 2 automatically rotates by its own weight, and is brought into a vertical state. When the nail anchor 1 is pulled forward in this state, the locking piece 2 is
To the inner edge of

The main body 3 of the concrete formwork is provided with a female thread 32 at one end of a screw rod 31, and the female thread is detachably connected to the thread 13 of the nail anchor 1. ing. Also, the screw rod 31 has
The washer 4 of the rib washer, which is formed so as to conform to the above, is movably fitted at the center, and the nut 5 for tightening the washer is screwed together. The end is crushed to prevent the nut 5 from coming off. After this concrete form clamp fastener body 3 is screwed and connected to the screw portion 13 of the nail anchor 1 set as described above, the panel A is connected as described in the section of “action”.
Eliminate the misunderstanding. To cut off the rear end of the nail anchor 1, the screw portion 13 may be removed from the groove 15. In addition,
The remaining portion of the nail anchor 1, that is, the insertion portion 12 and the locking piece 2 are buried in the cast concrete.

The panel A constitutes a driving formwork. The panel A is also used as a surface material and is integrated into the surface of the cast concrete, so that the surface preparation work or the finishing work is omitted and the removal work is eliminated. And reduce waste materials as much as possible to reduce industrial waste,
It seeks to reduce the use of timber, which is a problem for globally chaotic deforestation. Thus, panel A
Is an extruded cement plate provided with ridges and grooves such as ants and dovetails to be punched and bonded to the inner surface. The material is a mixture of hydraulic inorganic binder, inorganic or organic fiber, other aggregate, and water. This is sent to an extruder and extruded at high pressure. It is to be noted that the present invention is not limited to this, and it is needless to say that other materials and forming means may be used.

[0010]

According to the present invention, after assembling the driving formwork with the panel A and before pouring concrete, an appropriate through hole a is formed in the panel A, and the nail anchor 1 is inserted into the through hole from the outside. Since the locking piece 2 at the tip of the nail anchor is automatically engaged with the rim of the hole as it is inserted, the nail anchor 1 can be extremely easily attached to the misaligned portion of the panel A from the outside, Further, the concrete form fastener fastener body 3 is connected to the nail anchor 1 and the nut 5 is screwed to fasten the ratchet washer 4 toward the ratchet material B, and the panel A is reacted by the reaction force. Pull out to the outside,
The misaligned portion of the panel A that has entered inside can be pulled out very easily and lightly, and the panel A is brought into contact with the ratchet B, so that the panel A can be aligned with the ratchet B. It can be adjusted with high precision and extremely easily, misalignment can be accurately eliminated, and the appearance can be beautiful. Furthermore, the concrete form fastener main body 3 is removed after the predetermined strength is exerted on the poured concrete, and the rear end portion of the nail anchor 1 may be cut off and cut off in the groove 15 for cutting off, so that subsequent handling is extremely easy. It is.

[Brief description of the drawings]

FIG. 1 is a cutaway side view of a concrete form fastener for adjusting a misalignment of a driving form according to an embodiment of the present invention.

FIG. 2 is a plan view in use of the same example.

[Explanation of symbols]

 A: Panel a: Through hole B: Sideways 1 ... Nail anchor 11 ... Bar body 12 ... Insertion part 13 ... Screw part 14 ... Pin 15 ... Groove 16 ... Splitting 2 ... Locking piece 3 ... Concrete form fastener Main body 31: Screw rod 32: Female screw part 4: Washer for ratchet material 5: Nut

──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Soichi Kitani 8-21-1, Ginza, Chuo-ku, Tokyo Inside Takenaka Corporation Tokyo Main Store (72) Inventor Koichiro Taguchi 8-21 Ginza, Chuo-ku, Tokyo No. 1 Takenaka Corporation Tokyo Main Store (72) Inventor Yoshinori Kohiyama 8-21-1, Ginza, Chuo-ku, Tokyo Co., Ltd. 21-1 Co., Ltd. Takenaka Corporation Tokyo Main Store (72) Inventor Koji Ukibo 8-21-1, Ginza, Chuo-ku, Tokyo Co., Ltd. Takenaka Corporation Tokyo Main Store (72) Inventor Akira Umekuni Koto-ku, Tokyo 2-5-14 Minamisuna Takenaka Corporation Technical Research Institute (72) Inventor Noriyoshi Kamasaki 3-6-1 Nihonbashi, Chuo-ku, Tokyo Asahi Inside the formula company (72) Inventor Toru Kadono 4-44, Takanawa, Minato-ku, Tokyo Mitsubishi Cement Building Materials Co., Ltd. (72) Inventor Iwao 2-8-2 Oshiage, Sumida-ku, Tokyo Okabe Corporation (56) References Japanese Utility Model Sho 58-195737 (JP, U) (58) Fields investigated (Int. Cl. ⁶ , DB name) E04B 2/86 E04G 17/06 101

Claims (1)

(57) [Scope of request for utility model registration] 1. A nail anchor 1 comprising a rod 11 inserted into and engaged with a through hole a formed in a panel A. The nail anchor is provided at the tip of the rod 11 with an automatic after insertion. Attach the locking piece 2 that will be in a locked state, and in the middle part,
A groove 15 for stripping is provided in the periphery, and one end of a concrete form fastener main body 3 composed of a screw rod 31 is detachably connected to a rear end of the concrete form fastener main body 3. A concrete form fastener for adjusting a misalignment of a driving form, wherein a nut 5 for fastening the washer 4 is movably fitted and a nut 5 for fastening the washer 4 is screwed.