JPH0446209A - Joint fitting - Google Patents

Abstract

PURPOSE:To obtain the firm joint with the simple constitution by integrally forming a projection part inserted into an installation hole on a joint member on a trunk part for the insertion of a bolt, forming a contact surface which can contact the outer and inner surfaces of the joint member and a pressing surface which extends in the direction crossing at right angle with the shaft of a bolt, on the trunk part and the projection part. CONSTITUTION:A steel plate is bent, and a projection part 22 for the insertion into an insertion hole 25 of a joint member 24 is integrally formed in succession to a U-shaped trunk part 21 having a vacant trunk part into which a bent bolt 27 can be inserted. A contact surface 21b which is parallel to the shaft 27a of a bolt 27 and can contact the outer surface of the joint member 24 and a surface 21c on which a nut 28 is engaged are formed on the trunk part 21, and a contact surface 22a which extends in parallel to the shaft 27a and can contact the inner surface of the joint member 24 and a pressing surface 22b which can contact the wall surface close to the fixed member 26 of the installation hole 25 in the direction crossing at right angle with the shaft 27a are formed on the projection part 22. The projection part 22 is inserted into the installation hole 25 of the joint member 24, and tightening is performed by a bolt 27, and then, the pressing surface 22b contacts the wall surface of the installation hole 25, and the joint member 24 can be pressed and fixed on the fixed member 26 side.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to a fastener for fastening a structural member such as a pipe against a fixed member at right angles.

Conventional Technology When constructing a structure by combining members such as pipes, it is necessary to butt the members at right angles and fasten them together. When a structure does not need to be disassembled, butt welding is usually used, but bolts are used to make it possible to assemble and disassemble the structure. At this time, it is necessary to provide a screw hole on the fastened member side. A conventional example will be described below with reference to the drawings.

FIG. 5 is a sectional view showing a conventional fastening structure.

A plate 2 is fitted into the vicinity of the tip of the pipe-shaped member 1 to be fastened and fixed by welding. A punch hole 3 is provided in the plate 2. 4 is a fixing member, and this fixing member 4 includes:
A through hole 5 is bored at a position corresponding to the screw hole 3.

In the above configuration, the bolt 6 is inserted into the through hole 5 of the fixing member 4.
The member to be fastened 1 is fastened to the fixing member 4 by screwing it through the screw hole 3 of the plate 2 and tightening it.

Problems to be Solved by the Invention Incidentally, in the above-mentioned conventional configuration, welding is required to fix the plate 2 to the member to be fastened 1, which not only requires time and effort for processing, but also the fastening strength depends on the welded part. For,
If there is a defect in welding, there is a problem in that the fastening strength decreases and reliability is significantly impaired.

The present invention solves the above problems, and aims to provide a fastener that has a simple structure and enables strong fastening.

Means for Solving the Problems In order to solve the above problems, a fastener according to a first aspect of the present invention includes: a body portion provided with a hollow portion through which a bolt is passed, which is vertically attached to a fixing member; Molded in one piece,
and a protrusion inserted into a mounting hole formed in the member to be fastened, and the body has a contact surface that extends parallel to the axis of the bolt and can come into contact with the outer surface of the member to be fastened. The protrusion has a contact surface that extends parallel to the axis of the bolt and can come into contact with the inner surface of the member to be fastened, and a contact surface that extends in a direction perpendicular to the axis of the bolt and that is capable of attaching the member to be fastened. It has a pressing surface that comes into contact with the hole wall surface and presses the member to be fastened toward the fixing member.

Moreover, the second means of the present invention is such that, in the first means, the body is formed into a U-shaped cross section, and the side on the opening side is extended to form a protrusion.

Effect: By inserting the protrusion of the fastener into the mounting hole of the member to be fastened and tightening the bolt passed through the fixing member and the body of the member to be fastened, the fastener moves over the member to be fastened. The fastener moves while sliding, and the pressing surface of the fastener comes into contact with the wall surface of the attachment hole of the member to be fastened, thereby pressing and fixing the member to be fastened to the fixed member side.

This fastener can be made into an integral ellipse by extending a protrusion from the body, and the member to be fastened can be firmly fastened to the fixed member via this fastener.

Moreover, by the second means, it is possible to easily manufacture a fastener in which the body part and the protrusion are integrated by simply bending the central part of the plate material with protrusions formed at both ends into a U-shape. can.

Example Hereinafter, one embodiment of the present invention will be described based on the drawings.

FIG. 1 is a perspective view of a fastener according to an embodiment of the present invention, and FIGS. 2 and 3 are a side sectional view and a plan sectional view showing a fastened state. In FIGS. 1 to 3, reference numeral 20 denotes a fastener for fastening a rectangular pipe-shaped fastened member 24 against a fixing member 26 at a nearly right angle, and is made by punching a steel plate into a predetermined shape and forming a U-shape in the center. It is manufactured in one piece by bending it. The fastener 20 includes a U-shaped body 21 provided with a cavity 21a through which a bolt 27 is inserted, which is vertically attached to a fixing member 26, and a protrusion inserted into a mounting hole 25 formed in a member 24 to be fastened. It is composed of a section 22. The body 21 of the fastener 20 is connected to the shaft 27 of the bolt 27.
It has an abutment surface 21b that extends parallel to the direction a and can come into contact with the outer surface of the member 24 to be fastened, and a nut 28 into which a bolt 27 is screwed is engaged with the -side surface 21c. The protrusion 22 of the fastener 20 has a contact surface 22 that extends parallel to the shaft 27a of the bolt 27 and can come into contact with the inner surface of the member to be fastened 24.
a, and a pressing surface 22b that extends in a direction perpendicular to the axis 27a of the bolt 27 and that can come into contact with a wall surface near the fixing member 26 in the mounting hole 25 of the fastened member 24. Further, as shown in FIG. 4, the bolt 27 is fastened so that the distance M (dimension A) between the shaft 27a and the fastened member 24 is equal to the distance from the center to the side surface of the nut 28 screwed into the bolt 27. The body 21 of the tool 20 is dimensioned so that the side surface of the nut 28 is in close contact with the outer surface of the member 24 to be fastened. Note that 26a is a bolt insertion hole of the fixing member 26.

The fastening order in the above configuration will be explained.

First, the protrusion 22 of the fastener 20 is inserted into the attachment hole 25 of the member 24 to be fastened, so that the contact surfaces 21b and 22a of the body 21 and the protrusion 22 are aligned with the outer and inner surfaces of the member 24 to be fastened. Then, pass the bolt 27 through the insertion hole 26a of the fixing member 26 and the body 21 of the fastener 20, and then
8. At this time, one side of the nut 28 is in close contact with the outer surface of the member to be fastened 24, so this outer surface becomes a turning point, making it possible to tighten the bolt 27 without fixing the nut 28 with a spanner or the like. can. When the bolt 27 is tightened, the nut 28 is attracted to the fixing member 261pl, and the pressing surface 22b of the protrusion 22 of the fastener 20 is pressed into the mounting hole 25.
The member 24 to be fastened is strongly pressed against the fixing member 26 and fastened. Note that since the contact surface 22a of the protrusion 22 is in contact with the inner surface of the fastened member 24, the protrusion 22 will not come off from the attachment hole 25.

In this way, according to this fastener 20, the member to be fastened 24
In addition, simply drilling a mounting hole 25 of a predetermined size eliminates the need for processing such as welding, making it possible to achieve extremely strong fastening with a simple structure and low cost. Furthermore, since the nut 28 is prevented from rotating, it can be assembled and disassembled with simple operations.

Effects of the Invention As described above, according to the present invention, the body can be integrated without welding by having a simple configuration of a body having a hollow portion through which a bolt is passed and a protrusion that is locked to a member to be fastened. With this fastener, a member to be fastened can be easily and firmly fastened to a fixed member.Furthermore, by making the body U-shaped, the fastener can be made from a single plate. It is easy to manufacture and has excellent fastening strength because the body and the protrusion are integrated.

[Brief explanation of drawings]

FIG. 1 is a perspective view showing a fastener according to an embodiment of the present invention;
Fig. 2 is a side sectional view showing the same fastening state, Fig. 3 is a plan sectional view of the fastening state, Fig. 4 is an enlarged view of the main part of the same fastening state, and Fig. 5 is a conventional fastening structure. FIG. DESCRIPTION OF SYMBOLS 20... Fastener, 21... Body part, 21a... Cavity part, 21b... Contact surface, 22... Protrusion part, 22a...
...Abutting surface, 22b...Press surface, 24...Member to be fastened, 25...Mounting hole, 26...Fixing member, 27...
- Bolt, 27a...Shaft, 28...Nut. Agent Yoshihiro Morimoto Figure 2 Figure 20 Special wear 21 [#1 Part 2fa Tsuwara 1 - Rectangle Zf, Contact curve z2, East part 22a - One part υ 22t Pressure surface 21a# Oil 24 Takashiki φki Δ part 4 years old? 5 Dimensions 26 1 (Members 27 and Holes 28 Naso and Figure 3 Figure 4 B

Claims (1)

[Scope of Claims] 1. A fastener for fastening a pipe-shaped member to be fastened to a fixing member by abutting them at a substantially right angle, the body being provided with a hollow portion through which a bolt is inserted perpendicularly to the fixing member. and a protrusion that is integrally molded with the body and inserted into a mounting hole formed in the member to be fastened, and the body extends parallel to the axis of the bolt and is connected to the member to be fastened. The protrusion has a contact surface that can come into contact with an outer surface, and the protrusion has a contact surface that extends parallel to the axis of the bolt and can come into contact with the inner surface of the member to be fastened, and a contact surface that is orthogonal to the axis of the bolt. A fastener having a pressing surface that extends in the direction of the fastening member and presses the fastened member toward the fixing member by contacting a wall surface of the mounting hole of the fastened member. 2. The fastener according to claim 1, wherein the body has a U-shaped cross section, and the side on the opening side is extended to form a protrusion.