JPH03253638A - Anchor bolt - Google Patents

Abstract

PURPOSE:To surely accomplish fixation by revolving an anchor bolt, while it is being held in such a manner that an protrusion on its forward end is stuck into the innermost wall of an insertion hole to prevent the bolt from slipping out of place, to engage a hook member with a fixing part. CONSTITUTION:A cone-shaped protrusion 5 for prevention of slippage is provided at the forward end of a shaft member 2 having a part 7 at the base end thereof for engagement with a spanner etc. And then a pyramid-shaped hook member 3 is provided below the protrusion 5 with one of the face of pyramid being oriented normal to the member 2 to form an anchor bolt 1. And the anchor bolt 1 is inserted into an insertion hole 13 formed near a joint between panels 9a,9b. Thereafter, the protrusion 5 is stuck into the innermost wall of the hole 13 to prevent it from slipping, while the anchor bolt 1 is revolved to bring the hook member 3 into engagement with a fixing part 12 of both the panels 9a, 9b, so that the fixing part 12 is surely fixed.

Description

[Detailed Description of the Invention] [Field of Industrial Application] This invention relates to an anchor bolt used for attaching various appliances, members, or devices to a wall surface made of aerated concrete panels or blocks. .

[Conventional technology]

Aerated concrete (autoclaved light)
teveight concrete is made by mixing cement paste with a surfactant to generate air bubbles or aluminum powder to generate hydrogen gas, molding it into a bottom mold, and then heat-treating it in an autoclave to enclose air bubbles inside. In addition to the inherent nonflammability of concrete, panels made of aerated concrete (hereinafter referred to as rALcj) are lightweight and have excellent heat and sound insulation properties due to the fine air bubbles inside. It has the feature of extremely good machinability such as cutting,
It is widely used as a construction board material for the interior and exterior walls and floors of buildings.

Generally, ALC panels have a thickness of 10 to 15 cm.
m, the length is 2 to 3 m, the panel width is unified to 60 cm, and hemispherical grooves are formed on both side edges of the panel. When connecting, the side edges of adjacent panels are connected. A reinforcing bar is placed at the center of a circular cross-sectional connection formed between two adjacent panels, and the connection is then filled with mortar or concrete for assembly.

[Problem to be solved by the invention]

ALC panels with the above-mentioned features contain air bubbles, so if you try to attach them by driving nails, bolts, etc. into the panel or screwing them in, the concrete containing air bubbles will collapse in the area where the holes are placed. However, as a result, this driving hole becomes a so-called "dumb hole" and has the disadvantage that bolts cannot be reliably attached to the panel.

In view of the drawbacks that ALC panels have, 1. For example, by using bolts whose tips expand inside the panel and are anchored, the bolts are attached to the panel, and the bolts can be used to perform various types of work. Although it supports instruments and equipment, it is difficult to support heavy instruments and equipment with heavy bolts, so it is difficult to attach heavy instruments and equipment to panels. The current situation is to avoid this as much as possible.

In view of the drawbacks of current bolts used for ALC panels, the purpose of this invention is to provide anchor bolts that can securely attach various instruments and devices to ALC panels. It is.

[Means to solve the problem]

In order to achieve the above object, the anchor bolt of the present invention is provided with a conical slippage prevention protrusion at the tip of a shaft member that has an engagement portion formed at its base end for engaging with a spanner, etc. The present invention is characterized in that a hook member made of a pyramid is attached below the stop projection with one pyramidal surface of the pyramid perpendicular to the axis of the shaft member.

The material of the anchor bolt is selected from metal materials such as mild steel, stainless steel, aluminum, etc. depending on the purpose, and its dimensions can also be arbitrarily selected depending on the purpose of use.

The hook member is formed of a pyramid,
The cross section may be triangular, quadrilateral, or more polygonal, but as will be described later, the ridgeline of the pyramid is used as a cutting edge.

A triangular pyramid is most preferable, but the ridgeline becomes a cutting edge and AL
As long as the panel made of C can be easily cut, there is no particular restriction on its cross-sectional shape.

[For production]

In the anchor bolt of the present invention, a conical slip-preventing protrusion is provided at the tip of the shaft member, and a hook member made of a pyramid is attached below the slip-preventing protrusion so that one conical surface of the pyramid is aligned with the axis of the shaft member. It is installed perpendicular to the center.

Therefore, after placing reinforcing bars in the connection area formed between adjacent panels, the connection area is filled with concrete, etc., and the tip of the anchor bolt is inserted through the insertion hole formed near the connection area of the panels. Then, when the anchor bolt is rotated while sticking the anti-slip protrusion at the tip of the shaft member into the inner wall of the insertion hole to prevent it from shifting, the tip of the shaft member is rotated. 'A hook member made of a pyramid protruding at right angles engages with a connection formed by filling concrete, etc., so after confirming engagement, fill the insertion hole with concrete, etc., and the anchor bolt will be inserted. , can be securely fixed to the panel.

〔Example〕

Hereinafter, the present invention will be described in more detail by way of example of an anchor bolt with reference to the accompanying drawings.

In the anchor bolt 1 of the present invention, the base end of a shaft member 2 in the shape of a round bar is forged to have a rectangular cross section to form an engaging portion 7 for a spanner, wrench, etc., and the outer periphery of the shaft on the side of the engaging portion 7. A threaded portion 8 is formed on the shaft member 2 to form a mounting portion 6 for the instrument 1 member and other devices to be attached to the surface of the ALC panel, while a conical projection for preventing slippage is provided at the tip of the shaft member 2. 5 is provided so that its sharp tip is located on the axis of the shaft member 2, and a hook member 3 made of a triangular pyramid is provided below the protrusion 5.
is provided in a protruding manner such that one pyramidal surface of the pyramid is perpendicular to the axis of the shaft member 2.

Why is the hook member 3 made of a pyramid?

This is because the ALC panel is used as a cutting blade for the edges of the pyramid, %i4a, 4b, and 4c.

A method for fixing instruments to the surface of an ALC panel using the anchor bolt 1 having the above configuration will be described below.

As shown in FIG. 3, the panels 9a and 9b made of ALC usually have semicircular connecting portions formed on their side edges that touch each other to form two cylindrical gaps, with a hole in the center of the gaps. After placing the reinforcing bars 1), the gaps are filled with, for example, concrete to form a solidified part 12, so that they are integrally connected. The anchor bolt 1 is fixed to the surface of the bolt 9b.

That is, an insertion hole 13 for inserting the anchor bolt 1 from the surface is bored near the solidified portion 12 side of the panel 9a by an appropriate means, and the anchor bolt 1 is inserted into the insertion hole 13 from the tip end. .

At that time, the hook member 3 is inserted with it not facing the direction of the solidification part, and the anchor bolt 1 is rotated to a position where the tip of the hook member 3 contacts the solidification part 12 and is locked. And the threaded part 8 on the proximal end side of the anchor bolt 1 is connected to the panel 9a.
position so as to protrude from the surface by a predetermined length.

Thereafter, a spanner or the like is set in the engagement portion formed at the base end of the shaft member 20 protruding from the surface of the panel 9a, and the hook bolt 1 is rotated to bring the hook member 3 into contact with the solidification portion 12. to lock.

At that time, the anti-slip protrusion 5 formed at the tip of the shaft member 2
The hook member 3 is stably inserted into the wall of the inner body of the bored insertion hole 13 to secure its position, prevent the anchor bolt 1 from slipping during nine rotations, and securely lock the hook member 3 to the fixed part 12. can do.

The anchor bolt 1 thus locked can be securely fixed by filling and solidifying the gap in the insertion hole 13 with concrete or mortar, after the mortar has completely dried.

A washer 14 is attached to the threaded portion 8 of the anchor bolt 1. Natsu 1
5 is attached and tightened to firmly fix it, and the screw portion 8 protruding from the surface of the panel 9a can be used to securely attach the instrument 1 member and devices (not shown). This allows installation of large items.

In addition, although the example of the panel was explained in the example,
This anchor bolt can also be used to attach instruments to blocks made of C.

〔Effect of the invention〕

The anchor bolt of this invention is made of ALC by locking a hook member protruding from the tip of a biaxial member to a hardened part made of concrete or the like used for connecting ALC panels, etc. It can be securely fixed in a panel, etc., and at that time, the anti-slip protrusion at the tip pierces the inner wall of the insertion hole and can be rotated without shifting the position.

This allows the anchor bolt to be securely locked.

In addition, since the hook member is composed of a pyramid,
When the anchor bolt is rotated, the ridge line forming the pyramid becomes a sharp cutting edge that scrapes the inside of the panel, making it extremely easy to attach the anchor bolt to the panel.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing an example of the anchor bolt of the present invention, FIG. 2 is a front view thereof, and FIG. 3 is a longitudinal sectional view showing an example of use of the anchor bolt of the present invention. 1 ・ ・ 2 ・ 3 ・ ・ 5 ・ ・ 6 ・ ・ 8 ・ 9a. 10a. 1) ・ ・ 12 ・ 13 ・ ・ ・ Anchor bolt, shaft member, hook part, anti-slip projection, mounting part, screw part 9b...ALC panel 10b...notch part, reinforcing bar, solidified part・Insertion hole

Claims (1)

[Claims] (1) A conical anti-slip protrusion is provided at the tip of the shaft member, which has an engaging part for engaging with a spanner, etc. at the base end, and a hook made of a pyramid is provided below the anti-slip protrusion. An anchor bolt characterized in that the member is attached with one pyramidal surface of the pyramid being perpendicular to the axis of the shaft member.