JPH0422099Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to an insert for a deck plate (hereinafter simply referred to as an insert) that is attached to an insert attachment hole drilled in a deck plate.

[Conventional technology]

Conventionally, to attach an insert to a deck plate, an electric drill was used to drill a mounting hole in the deck plate, and the insert was hammered into the hole to expand the fixing piece of the internal fixing member and fix it. .

Inserts in which the fixing pieces are expanded by hammering force have the problem of increased costs because a metal fixing member must be installed inside the insert. Furthermore, in order to attach the suspension bolt to the insert, the suspension bolt must be rotated and screwed into the female thread inside the insert, which is a complicated operation.

[Problem that the invention attempts to solve]

The purpose of this invention is to make it possible to easily attach an insert to a deck plate without installing a fixing member for the sole purpose of fixing the insert, and to also make it easy to attach a hanging bolt to the insert. It has been done.

[Means for solving problems]

The present invention provides a perpendicular pressing surface against which the suspension bolt is pressed on one side of the opposing portions of the peripheral wall of the cylindrical insert body, and a guide surface for guiding the vertical movement of the wedge body on the other side. The guide surface is inclined with respect to the pressing surface so that the distance between the guiding surface and the pressing surface gradually increases from the bottom to the top, and a wedge body with a female thread formed on one side is installed inside the insert body. The present invention is characterized in that the lower end of the insert body is provided with a seat portion and a retaining portion that are in close contact with the upper and lower surfaces of the deck plate, respectively.

〔Example〕

Embodiments of the present invention are shown in FIGS. 1 to 10, and insert A will be described first.

As shown in FIGS. 1 and 5, this insert A consists of a cylindrical insert body 2 and a wedge body 4 housed inside this insert body 2.

The insert main body 2 has an interior portion 2a in which the wedge body 4 is housed and a hanging bolt 8 is inserted.
and an insertion fixing part 2b for driving and inserting into the insert mounting hole 6 drilled in the deck plate D.

The interior portion 2a of the insert main body 2 includes a rectangular tube whose width gradually increases from the lower end to the upper end;
It has a shape that is a combination of a semi-cylindrical part, and a wedge body 4 is housed inside the rectangular cylindrical part, and a hanging bolt 8 is inserted into the semi-cylindrical part. The semi-cylindrical portion of the interior portion 2a of the insert body 2 is provided with a vertical pressing surface 9 against which the hanging bolt 8 is pressed.
A guide surface 10 facing the pressing surface 9 is provided on the rectangular tube-shaped portion a. This guide surface 10
is inclined with respect to the pressing surface 9, and both surfaces 9,
The intervals of 10 gradually become wider from the bottom to the top. The wedge body 4 is configured to move up and down while being guided by this guide surface 10.

The cross section of the insertion fixing part 2b of the insert main body 2 is U-shaped as shown in FIG. There is. The lower end surface of the interior portion 2a of the insert body 2 serves as a seat surface 12.

A stopper piece 14 is cut and raised in the semi-cylindrical part of the interior part 2a of the insert main body 2, and a pair of retaining pieces 16 are cut and raised in opposing parts of the upper end of the insertion fixing part 2b. There is.

A female threaded portion 4a corresponding to the suspension bolt 8 is formed on the side surface of the wedge body 4, and a side surface 4b opposite to the surface on which the female threaded portion 4a is formed is formed in the same manner as described above with respect to the surface on which the female threaded portion 4a is formed. Guide surface 1
It is tilted by the same angle as 0. Therefore, the wedge body 4 internally installed in the internal part 2a of the insert main body 2
As long as the side surface 4b of the wedge body 4 moves up and down in close contact with the guide surface 10, the surface of the wedge body 4 on which the female threaded portion 4a is formed always remains vertical. A cylindrical sponge body 18 is housed in the semi-cylindrical portion of the interior portion 2a, and this sponge body 18 prevents the side surface 4b of the wedge body 4 from separating from the guide surface 10.

A leaf spring 22 is attached to the lid 20 attached to the insert body 2, and when the wedge body 4 is lifted above a predetermined position, this leaf spring 22
The wedge body 4 is pressed downward by the action of.
Thereby, the female threaded portion 4a of the wedge body 4 and the male threaded portion 8a of the suspension bolt 8 are easily hooked together.

A cutting tool B for cutting and forming the insert mounting hole 6 in the deck plate D is shown in FIG.

This cutting and bending tool B has a cutting and bending tool main body 26 provided integrally with a holder 24. The cross section of the cutting tool main body 26 has a shape that is a combination of a semicircular diameter and a rectangular shape, corresponding to the insert mounting hole 6 to be drilled in the deck plate D, and the tip of the portion whose cross section is a semicircular diameter is The tip of the cutting and raising tool main body 26 is cut off diagonally to form a cutting tip 28.

For this reason, the tip surface 30 of the cutting and raising tool main body 26 is inclined with respect to the striking direction P, and the tip surface 30
The periphery of the cutting edge 32 is a cutting edge 32.

To attach the insert A as described above to the deck plate D, use a cutting tool B to cut and cut an insert mounting hole 6 in the deck plate D.

First, as shown in Fig. 3, the cutting and raising tool B is held perpendicularly to the deck plate D and the cutting tip 28 is applied to the decking plate D, and in this state, the cutting and raising tool B is struck. , the striking force is at the cutting edge 28
Focusing on this part, the decking plate D is first cut and raised, and once cut and raised, the cutting and raising tool main body 2 is cut and raised.
The deck plate D is continuously cut and raised following the cross-sectional shape of 6, and insert mounting holes 6 as shown in FIGS. 1 and 4 are drilled,
A tongue piece 34 is cut and raised at one end of the insert mounting hole 6 by approximately 90 degrees.

When the insertion fixing part 2b of the insert main body 2 is driven into the insert mounting hole 6, the seat surface 12 and the stopper piece 14 of the insert main body 2 come into close contact with the upper surface of the deck plate D, and the insert Insertion fixing part 2b of main body 2
The side end surface of is in close contact with the cut and raised tongue piece 34 (the first
0), the insert A is attached to the deck plate D. Note that the retaining piece 16 is in contact with the lower surface of the deck plate D (see FIG. 9).

To attach the hanging bolt 8 to the insert A attached to the deck plate D, insert the tip of the hanging bolt 8 into the interior through the opening at the lower end of the insert body 2, as shown in FIG.
When the male threaded portion 8a of the suspension bolt 8 and the female threaded portion 4a of the wedge body 4 are partially engaged, the wedge body 4 is pushed up along the guide surface 10 against the leaf spring 22.

In this state, the entire female threaded portion 4a of the wedge body 4 is engaged with the male threaded portion 8a of the hanging bolt 8. When the hanging bolt 8 is pulled downward after being inserted into the insert body 2,
The wedge body 4 is also pulled down along the guide surface 10,
As shown in FIG. 8, when the wedge body 4 is pulled down to a certain position, the side surface 4b of the wedge body 4 comes into close contact with the guide surface 10 due to the so-called wedge action, and the hanging bolt 8 is moved against the pressing surface 9. The hanging bolt 8 can be easily attached to the insert A by being strongly pressed against the insert A.

[Effect of idea]

The present invention provides a perpendicular pressing surface against which the suspension bolt is pressed on one side of the opposing portions of the peripheral wall of the cylindrical insert body, and a guide surface for guiding the vertical movement of the wedge body on the other side. The guide surface is inclined with respect to the pressing surface so that the distance between the guiding surface and the pressing surface gradually increases from the bottom to the top, and a wedge body with a thread corresponding to the hanging bolt is formed into the insert body. Since the insert body has a fixing part to the deck plate at the lower end of the insert body, the insert can be easily attached to the deck plate without providing a fixing member for the sole purpose of fixing, and the wedge body can be attached easily. The suspension bolt can be easily attached to the insert by means of a wedge action.

Furthermore, in order to attach the hanging bolt to the insert, the hanging bolt can be simply pushed in and then pulled, so there is no need for complicated rotation as with conventional inserts.

[Brief explanation of the drawing]

Fig. 1 is an exploded perspective view of the insert A according to the present invention, Fig. 2 is a perspective view of the cutting tool B facing upward, and Figs. 3 and 4 respectively show the cutting tool B. Figures 5 and 6 show before and after drilling the insert mounting hole 6 in the deck plate D using B.
The figure shows insert A in deck plate D.
7 and 8 are cross-sectional views before and after installing the hanging bolt 8 to the insert A, respectively, and FIG.
FIG. 6 is a sectional view taken along the line XX, and FIG. 10 is a sectional view taken along the line Y-Y of FIG. 7. The explanation of the symbols of the main parts is as follows. A...Insert, D...Deck plate, 2
...Insert body, 4...Wedge body, 4a...
Female threaded part of wedge body, 8... Hanging bolt, 8a...
... Male threaded part of hanging bolt, 9 ... Pressing surface, 1
0... Guide surface, 12... Seat surface (fixed part).

Claims (1)

[Scope of utility model registration request] A vertical pressing surface against which the hanging bolt is pressed is provided on one of the opposing portions of the peripheral wall of the cylindrical insert body, and a guide surface for guiding the vertical movement of the wedge body is provided on the other side, and this guide surface The guide surface is inclined with respect to the pressing surface so that the distance between the pressing surface and the pressing surface gradually increases from the bottom to the top, and a wedge body in which a thread corresponding to the hanging bolt is formed is installed inside the insert body, An insert for a deck plate, characterized in that a fixing part to the deck plate is provided at the lower end of the insert body.