JPH0476136A - Insert for deck plate - Google Patents

Abstract

PURPOSE:To improve the extent of working properties by having an insert bored itself by a stroke, and cutting the tip into an acute angle so as to enable it to be set to a deck plate. CONSTITUTION:When the top of an insert body 1 is struck, a deck plate 7 is bored by the acute angular tip, thus it is pierced into the body 1. Next, a part of the deck plate 7 is further cut open by a blade 4a, and thereby an upper plate 3 hits on the deck plate 7 so that its insertion is stopped. Then, the body 1 goes backward by dint of repulsion of a spring 2, and the blade 4a comes into contact with the deck plate 7.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a construction insert installed in a deck plate.

[Conventional technology]

Conventional deck insert construction involves first drilling holes using an electric drill or using pneumatic pressure and gunpowder propulsion, and then manually inserting and installing the deck insert as shown in Figure 6. was. The deck insert used in this method consists of a petal-shaped body that contacts the lower surface of the deck plate and a spring that maintains the petal body (Japanese Utility Model Publication No. 140604/1983).

[Problem to be solved by the invention]

However, the installation of these inserts always involves drilling work as a pretreatment, making it impossible to improve workability. Additionally, when drilling with an electric drill, chips could fall to the bottom, potentially harming workers below.

Insert and install the insert into this drilled hole,
Since the diameter of the insert body and the diameter of the hole are designed to be approximately the same, a considerable amount of pressing force is required during insertion, and the workability of installing the insert using this method is extremely poor.

[Means to solve the problem]

The present invention solves these drawbacks and provides an insert that significantly improves the workability of insert installation work.

That is, the deck plate insert is characterized in that the tip is cut at an acute angle so that it can be self-pierced by impact and installed on the deck plate.

The present invention will be explained in detail with reference to embodiments shown in FIGS. 1 to 5. FIG. 1 is an explanatory diagram of one embodiment of the present invention,
is an insert body, 2 is a spring, 3 is an upper plate, 4 is a blade, 5 is an internal thread, and 6 is a taper. Next, the operation will be explained in detail with reference to FIG. When the impact energy necessary for insertion is applied from the upper part of the insert main body 1, the deck plate 7 is perforated from the sharp tip, and the insert main body 1 is penetrated. Since the tip is at an acute angle, the penetration resistance is small, and the cutting edge 9 can be penetrated with the cutting edge 9 connected to the deck plate. Thereafter, a part of the deck plate 7 is again incised by the blade 4, and the upper plate 3 hits the deck plate 7, and the penetrating movement is stopped. Upper plate 3
is a donut-shaped member having an inner diameter significantly larger than the outer diameter of the cylindrical portion of the insert main body l, and its movement is regulated by a spring 2 and a vane 4. Then, due to the repulsive force of the spring 2, the main body starts to move backward, the vanes 4 contacting the deck plate again, and the insert is correctly installed.

The angle of the tip can range from 30 to 600 degrees, but from the viewpoint of penetration resistance, perpendicularity, remaining shape of the cutting edge 9, etc., the most preferable tip angle is 45 degrees.

Taper 6 is extremely difficult to insert when inserting bolts to install light ceilings, piping, ducts, etc. after concrete is poured on the top of deck plate 7, and if the internal thread starts immediately from the mouth. The angle and length are not particularly limited.

The blade 4 is not particularly limited as long as it has a shape that allows the insert to be fixed after the deck plate 7 is perforated. Moreover, the number is not limited either. For example, a triangular type as shown in Figure 1, a plate spring-shaped type as shown in Figure 3, a type with a thick tip (opening like a petal) as shown in Figure 4, or a type as shown in Figure 5. Examples include petal-shaped objects that are housed in the main body and bloom when installed.

The upper plate 3 is not particularly limited as long as it does not deform upon impact penetration.

The spring 2 has a repulsive force to ensure that the main body is installed correctly, and is also resilient to being kicked or stepped on by an operator's carelessness after installation.

〔Effect of the invention〕

In the deck plate insert of the present invention, drilling and insertion can be completed at the same time during installation, and workability is significantly improved.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing one embodiment of the present invention. Second
The figure is an explanatory sectional view showing the operation of the insert shown in FIG. 1. 3-5 are cross-sectional views of other embodiments of the invention. FIG. 6 is a sectional view of a conventional insert. 1...Insert body 2...Spring 3...
Upper plate 4...Blade 5...Inner screw
6...Taper 7...Deck plate
8... Petal-shaped body 9... Cutting edge Patent agent Asahi Kasei Corporation

Claims (1)

[Claims] (1) A deck plate insert characterized in that the tip is cut at an acute angle so that it can self-pierce by impact and be installed on the deck plate.