JP2570961Y2 - Driving connection hardware for driving panel - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a driving fitting for a driving panel.

[0002]

2. Description of the Related Art In the construction of concrete walls, it is known to use a driving formwork which also serves as a surface material.
This driving form is assembled by connecting a plurality of driving panels manufactured in a predetermined form in advance. According to this driving form, the surface base work or the finishing work can be omitted, and the dismantling and dispersing work of the form is eliminated. Can save labor, shorten the construction period, and reduce costs.In addition, waste can be reduced as much as possible, reducing industrial waste, which is a problem of dumping, and disorderly deforestation. Can greatly contribute to a reduction in the amount of wood that becomes a problem.

When assembling this type of driving formwork, it is usually necessary to connect adjacent driving panels flush with each other. Therefore, an H-shaped joiner made of a steel plate into an H shape is used for the connection. And the butted ends of the two driving panels to be connected are fitted to each other.

Japanese Patent Application Laid-Open No. 1-310021 discloses that a dovetail shape which is symmetrical to each other and united on both sides is provided on the inner edge of the butted end of adjacent driving panels to be connected in a flush manner. An engagement ridge such as a T-shape is formed, and a connecting member such as a dovetail groove or a T-groove is engaged with the entire length of the engagement ridge to connect the members. I have.

[0005]

However, in the case of the above-mentioned H-shaped joiner, the butt ends of the two driving panels to be connected are fitted to each other, so that they remain on the surface even after the concrete is cast, so that the appearance is remarkably improved. Inhibits. Further, the H-shaped joiner is difficult to use because it is easily deformed by an external force, and has a disadvantage that it is easily detached during construction.

In the case of JP-A-1-310021, it is extremely difficult to secure high dimensional accuracy in the actual production of a driving panel and a connecting member, especially in mass production. When the engagement of the members becomes loose and the surface becomes uneven, sometimes the engagement of the coupling member becomes unacceptable and the connection becomes impossible. Of course, if you do secondary precision processing,
Although it is possible to obtain considerably high dimensional accuracy, it will not only increase the cost but also make it impossible to engage even with a slight deformation due to unexpected external force, etc.
It cannot be put to practical use.

On the contrary, in recent years, a perforated panel has been used as a driving panel of a driving formwork developed by the present applicants.
This panel has a dovetail engaging ridge that is symmetrical to the left and right, and is united on both sides at the inner edge of the butted ends of the left and right panels to be connected to the same surface. Corrugations such as dovetails and dovetails are formed in correspondence with the dovetail-shaped engaging protrusions to improve the adhesion to cast concrete, and a vertical hole is drilled at the abutting end. , Is an extruded cement board that allows upper and lower pins to be joined together. The material used is a mixture of a hydraulic inorganic binder, an inorganic or organic fiber, other aggregates, and water. Extrusion molding.
The present invention is intended to solve the above-mentioned conventional problems by making it possible to use such a driving panel simply and reliably without being exposed to the outside.

[0008] In order to achieve the above object, the invention of claim 1 provides:
A connecting portion C having a dovetail engagement ridge B formed on the inner edges of the butted ends of the two driving panels A whose surfaces are to be connected flush with each other. The strip-shaped spring steel plate 1 in a direction orthogonal to the dovetail-shaped engaging ridge B is fitted to the dovetail-shaped engaging ridge B so as to be partially fitted to the key of the ridge B.
An elastic engagement portion 11 is formed at both ends to bend into a dovetail shape conforming to the dovetail cross-sectional shape of the dovetail, and to be engaged with both edges of the dovetail engagement ridge B. The number of ribs 12 is provided.

According to a second aspect of the present invention, there is provided a connecting portion C in which a dovetail engaging ridge B is formed on the inner edges of the butted ends of the two driving panels A which are to be connected to the same surface. The strip-shaped spring steel plate 1 in a direction perpendicular to the dovetail-shaped engaging ridge B is partially fitted to a key portion of the dovetail-shaped engaging ridge B. The elastic engaging portions 11 for engaging the both edges of the dovetail-shaped engaging ridge B are formed at both ends by bending in a dovetail shape corresponding to the dovetail cross-sectional shape of the ridge B. A flexible portion 13 that can be elastically deformed is formed, and a suitable number of ribs 12 are provided in the middle portion in the longitudinal direction, and a plurality of through holes 14 are arranged.

The invention of claim 3 is based on claim 1 or claim 2.
In the driving connection hardware of the driving panel, the elastic engaging portions 11 at both ends of the strip-shaped spring steel plate 1 are formed such that one elastic engaging portion 11 is long and the other elastic engaging portion 11 is short. Consisting of

[0011]

According to the above construction, in the invention of claims 1 to 3, at the joint C where the butting ends of both the driving panels A are butted with each other, one dovetail is formed on both sides. The elastic engaging portions 11 at both ends are pushed open and fitted to the shape engaging ridge B against its own elasticity.
The elastic engaging portions 11 at both ends are elastically engaged with both edges of the dovetail-shaped engaging ridge B. At this time, the ribs 12 in the middle part strengthen the stiffness of the middle part. Thereby, both the driving panels A are
It is strongly connected with the surface flush, and it can be reliably driven without detaching even when placing or pushing concrete.

Further, in the invention of claim 2, a relatively large dimensional tolerance in the horizontal direction in the panel surface of the driving panel A is obtained by appropriately elastically deforming the elastically deformable bending portion 13 at the intermediate portion. Therefore, even if a small gap is formed between the butted ends of both the driving panels A due to warpage or the like, connection is possible. Note that such a gap does not cause any problem when the joint material is interposed.

According to the third aspect of the present invention, one short elastic engaging portion 11 enhances the convenience of engagement.

[0014]

1 to 3 show the first and third embodiments, FIGS. 4 and 5 show the first embodiment, and FIGS. 6 and 7 show the second embodiment. Is shown. In the figure, A is a perforated panel of the above-mentioned extruded cement board, which is both a driving panel to be connected to the surface in a flush manner. B is a dovetail engaging ridge formed on the inner edge of the butted end of both driving panels so as to be unitary on both sides, C
Is a connecting portion having the dovetail-shaped engaging ridge. Numeral 1 is a strip-shaped spring steel plate which forms the driving connection hardware of the present invention,
A part of the dovetail-shaped engaging ridge B is fitted to the key
The dovetail engaging ridge B is bent into a dovetail shape in a direction perpendicular to the dovetail engaging ridge B so as to conform to or correspond to the dovetail cross-sectional shape of the dovetail engaging ridge B. An elastic engaging portion 11 to be engaged with both edges of the ridge B is formed, and two ribs 12 are juxtaposed in a longitudinal direction at an intermediate portion.

In particular, in the case of FIGS. 1 to 3, the intermediate portion of the strip-shaped spring steel plate 1 is formed flat so as to conform to the dovetail-shaped cross-sectional shape of the dovetail-shaped engaging ridge B, and the both ends are formed. Of the elastic engaging portions 11, one elastic engaging portion 11 is formed long and the other elastic engaging portion 11 is formed short. Of course, as shown in FIGS. 4 and 5, both elastic engaging portions 11 at both ends may be made longer.

8 and 9, an elastically deformable bent portion 13 is formed in the middle portion of the strip-shaped spring steel plate 1 and a plurality of transparent portions are formed between the ribs 12 in the middle portion. A hole 14 is provided.

[0017]

According to the first, second, and third aspects of the present invention, the following effects are obtained because of the above-described configuration. At the joint C of the two driving panels A, the elastic engaging portions 11 at both ends may be pushed open and elastically engaged with the dovetail engaging ridge B united on both sides. Very simple and hassle-free. Therefore, the construction period can be shortened. In this elastic engagement, the middle portion ribs 12 can strengthen the middle portion, so that both the driving panels A can be strongly connected to the same surface, and can be pushed into concrete. Can be driven without separation. Unlike the case of the conventional H-shaped joiner, it does not appear on the outer surface and hinders the appearance, and it is difficult to use.
It does not come off during construction. Since the strip-shaped spring steel plate 1 is bent so as to be elastically deformable, and is partially fitted to a key portion of the dovetail-shaped engaging ridge B, it can be driven in itself. Also for the panel A, a large dimensional tolerance can be tolerated, mass production becomes possible without any trouble, the engagement becomes loose and the panel surface becomes uneven, There is no possibility that engagement becomes impossible due to deformation or the like. Of course, there is no need for secondary precision processing. It can be easily mass-produced with a simple configuration. Overall, costs can be reduced.

In addition, according to the invention of claim 2, since the flexible portion 13 which can be elastically deformed is formed in the middle portion of the strip-shaped spring steel plate 1, between the butted ends of both the driving panels A. Even if a small gap due to warping or the like occurs, this can be tolerated and can be connected without trouble, and since a plurality of through-holes 14 are arranged in the middle part, casting concrete inside the middle part When the concrete is sufficiently penetrated, the concrete inside and outside of the intermediate portion can be sufficiently integrated through the through holes 14, and there is no occurrence of division inside and outside.

According to the invention of claim 3, one of the elastic engaging portions 11 at both ends of the strip-shaped spring steel plate 1 has one elastic engaging portion 11 long and the other elastic engaging portion 11 short. Since it is formed, the convenience of the engagement of the elastic engagement portion 11 can be enhanced.

[Brief description of the drawings]

FIG. 1 is a plan view showing an embodiment according to claims 1 and 3;

FIG. 2 is a rear view of the same example.

FIG. 3 is a sectional view of the same example taken along line II of FIG. 2;

FIG. 4 is a plan view showing another embodiment of the present invention.

FIG. 5 is a rear view of the same example.

FIG. 6 is a plan view showing an embodiment according to claim 2;

FIG. 7 is a rear view of the same example.

[Explanation of symbols]

 A: Driving panel B: Dove-shaped engaging ridge C: Connection part 1: Strip-shaped spring steel plate 11: Elastic engaging part 12: Rib 13: Flexure part 14: Through-hole

 ──────────────────────────────────────────────────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 Ukiha 8-2-1 Ginza, Chuo-ku, Tokyo Co., Ltd. Takenaka Corporation Tokyo Main Store (72) Inventor Akira Umekuni Tokyo Koto-ku 2-5-14 Minamisuna Takenaka Corporation Technical Research Institute (72) Inventor Noriyoshi Kamasaki 3-6-1 Nihonbashi, Chuo-ku, Tokyo Asahi Equipment 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 JP-A-1-310021 (JP, A) JP-A-49-45535 (JP, A) JP-A-55-128839 (JP, U) JP-A-50-55319 (JP, U) Kosho 46-12051 (JP, Y1)

Claims (3)

(57) [Scope of request for utility model registration] 1. A connecting portion C in which a dovetail-shaped engaging ridge B is formed on the inner edges of the butted ends of both driving panels A whose surfaces are to be connected flush. The strip-shaped spring steel plate 1 in a direction perpendicular to the dovetail-shaped engaging ridge B is fitted to the dovetail-shaped engaging ridge B so as to be partially fitted to a key portion of the dovetail-shaped engaging ridge B. An elastic engaging portion 11 is formed at both ends to bend into a dovetail shape conforming to the cross-sectional shape and is engaged with both edges of the dovetail-shaped engaging ridge B. 12. A driving connection metal fitting for a driving panel, wherein 12 is provided. 2. A connecting portion C having a dovetail-shaped engaging ridge B formed on the inner edges of the butted ends of both driving panels A whose surfaces are to be connected flush. The strip-shaped spring steel plate 1 in a direction perpendicular to the dovetail-shaped engaging ridge B is fitted to the dovetail-shaped engaging ridge B so as to be partially fitted to a key portion of the dovetail-shaped engaging ridge B. The elastic engaging portions 11 for engaging with both edges of the dovetail engaging ridge B are formed at both ends by bending in a dovetail shape corresponding to the cross-sectional shape, and can be elastically deformed at the intermediate portion. A driving connection metal fitting for a driving panel, wherein a bending portion 13 is formed, and an appropriate number of ribs 12 are provided in an intermediate portion in a longitudinal direction, and a plurality of through holes 14 are arranged. 3. The elastic engaging portions 11 at both ends of the strip-shaped spring steel plate 1 are formed such that one elastic engaging portion 11 is long and the other elastic engaging portion 11 is short. 2. The driving connection metal fitting of the driving panel according to 2.