JPS60161109A - Concrete product into which connector is buried - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a concrete product in which a connecting tool is buried, and more particularly, a receiving member, which is one side of the connecting tool, is opened in the connecting surface and is buried, and The present invention relates to a concrete product that is easy to construct and whose connection parts have excellent durability.

2. Description of the Related Art Conventionally, some concrete products such as U-shaped blocks that are connected to form a drainage channel or the like have nuts embedded in the outer wall surface near the connection surface. When making the connection, a bolt is inserted into a connecting plate extending between the two concrete products, and the bolt is tightened to the above-mentioned pad to connect the two concrete products.

According to this, it is necessary to tighten the bolts one by one at the construction site, and the positions of the holes in the connecting plate and the positions of the nuts do not easily match, which not only takes time and effort, but also requires a spanner to tighten the bolts. In addition, connecting plates and bolts, which are generally made of iron, are exposed to the outer surface of concrete products, so they corrode over a long period of time, reducing their durability. It has the disadvantage of being inferior in gender.

The present invention has been made in view of the above-mentioned drawbacks, and its purpose is to connect and use a device that is easy to construct and does not lose its durability even after many years of use. The concrete product is provided with a receiving member that is formed of a cylindrical body with one end closed, and the inner peripheral surface following the open end is widened in the middle to form a stepped part, and the receiving member is attached to the connecting surface. Connecting members are connected by a plurality of connecting members that are open and buried, and that are formed on both end circumferential surfaces so that retaining protrusions that engage with the stepped portions have elasticity and can be freely contracted in width. A connecting tool is embedded therein, which is inserted between the receiving members of the concrete product to be connected and fixed.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a concrete product, and 1a is its connection surface.

Reference numeral 2 denotes a receiving member that is integrally molded with an opening on the connecting surface 1a. This receiving member 2 is formed of a cylindrical body with one end closed,
This inner circumferential surface is widened at a predetermined position from the opening end to form a stepped portion 2a. This widened inner peripheral surface has a shape that is narrowed toward the bottom surface. Further, the shape of the outer peripheral surface of the receiving member 2 follows the shape of its inner peripheral surface, and the stepped portion 2b serves to prevent the receiving member 2 from being pulled out.

Reference numeral 3 designates a connecting member, and its body 3a has a shape that fits into the inner circumferential surface of the opening end of the receiving member 2, and has an umbrella-shaped head at both ends that narrows toward the tip. A portion 3b is formed. The size of the tip of the head 3b is smaller than the opening of the receiving member 2, and the base end, which is the engaging protrusion 3C, is larger than that, and furthermore, the head 3b has elasticity. A slot 3d is formed in the axial direction to reduce the diameter. The width of the slot 3d is set to a size that allows the maximum size of the head 3a to be smaller than the opening of the receiving member 2 when the diameter of the head 3a is reduced.

In addition, when the shape of the opening of the receiving member 2 is square, the shape of the body 3a of the connecting member 3 is a square column, as shown in FIG. 2, and the engaging protrusion 3C is formed on the opposite side. If the opening surface of the receiving member 2 is round, it is formed of a round bar as shown in FIG. 3, and the slot 3d thereof is formed in the shape of a cross.

Furthermore, the engaging protrusion 3c is not limited to the one described above, but may have another structure, such as a plate spring (not shown) protruding from the peripheral surface.
It may be installed so that it sinks inward from the circumferential surface when pressed.

Furthermore, if the surface of the receiving member 2 is roughened, the receiving member 2 and the concrete product will come into close contact with each other.

Next, the concrete 1 and 1 in which the receiving members are respectively buried.
To explain the method of connecting the products 1, the connecting surfaces of the concrete products 1 to be connected are faced to each other, the connecting member 3 is previously engaged with the receiving member 2 of one of the concrete products, and both concrete products 1-product 1 are connected. When the two concrete products 1 are butted together, the head 3a of the connecting member 3 will engage with the stepped portion 2a of each receiving member 2 with its engaging protrusion 3c, and both concrete products 1 will be connected. Thereafter, the joints left between the connecting surfaces of both concrete products 1 are filled with a joint material such as mortar, and the connection work is completed.

Note that the engagement of the connecting member 3 to one of the concrete products 1 may be performed at the construction site or at a factory where the concrete product 1 is formed, depending on the situation at the construction site. .

In this way, according to the present invention, when connecting concrete products, the connecting member is placed between the opposing receiving members, and the two concrete products are connected and fixed by simply butting the two concrete products, so that the connection is possible. The work becomes extremely easy and the work time can also be shortened.

Furthermore, since the connecting members are buried within the concrete product, they will not corrode even if they are made of iron, and the connection points will be highly durable even after many years of use. can be played.

Although the present invention has been variously explained above with reference to preferred embodiments, the present invention is not limited to these embodiments, and it goes without saying that many modifications can be made without perceiving the spirit of the invention. It is.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a state in which concrete products according to the present invention are connected, and FIGS. 2 and 3 are perspective views of a connecting member. ■... Concrete product, la... Connection surface, 2.
...Receiving member, 2a, 2b...Step portion, 3...Connecting member, 3a...Body portion. 3b...head, 3c...engaging protrusion, 3d...
Suriwari. Patent applicant Hideku Takami Figure 1

Claims (1)

[Claims] (2) A plurality of receiving members are formed of a cylindrical body with one end closed, and the inner circumferential surface following the open end is widened in the middle to form a stepped portion, and are opened in the connecting surface and buried therein; A connecting member, which is formed on both end circumferential surfaces so that engaging protrusions that engage with the step portion have elasticity and can be freely contracted in width, extends between the receiving members of the concrete products to be connected. A concrete product in which a connecting tool is embedded, which is inserted into the concrete and fixedly connected.