JPH0979224A - Fastener - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a feastener that is simple in structure that is simple in structure, very easy for detachable operations, and speedily performable. SOLUTION: This fastener is composed of a headed pin 2 to be inserted into each through hole installed in plural pieces of members to be fastened, and a wedge body 3 assembled in a tip part of this headed pin 2 free of detachment, and this headed pin 2 is provided with a locked head part 5 at the tip part and a bottleneck part 6 installed adjacent to this locked head part 5, and an locked step part 7 is formed in a boundary between the locked head part 5 and the bottleneck part 6. On the other hand, this wedge body 3 is provided with a pair of wedge pieces by way of tilting both end edges 9a and 9a of two opposed side plates 9 and 9 combinedly installed at both sides of a slender top plate 8, and a guide hole 10, where the locked head part 5 is insertable into each short side of these wedge pieces 9 and 9, is installed in this top plate 8, while an engaging hole 10 extending in the longitudinal direction in succession, where the bottleneck part 6 along is slidable, is installed in this guide hole 10.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fastener suitable for temporarily or removably fixing and holding a plurality of plate-shaped members.

[0002]

2. Description of the Related Art Bolts and nuts are the most typical fastening means for fixing and holding a plurality of plate-shaped members.
Various types of fasteners using wedges are known.

[0003]

However, the bolts and nuts are not suitable for temporary fixing and holding because they require time and effort for fastening and releasing. In addition, conventional fasteners using wedges generally have problems that the structure is complicated and expensive, and that the attachment and detachment work is troublesome and time-consuming.

The present invention has been made in view of the above-mentioned conventional problems, and has a simple structure and is extremely easy to attach and detach.
The object is to provide a fastener that can be quickly performed.

[0005]

In order to achieve the above object, a fastener according to the present invention comprises a headed pin which is inserted into through holes provided in a plurality of members to be fastened, and a tip portion of the headed pin. It consists of a wedge body that can be detachably attached to
The headed pin has a locking head portion at a tip portion and a narrowed portion provided adjacent to the locking head portion, and a locking step is provided at a boundary between the locking head portion and the narrowed portion. On the other hand, the wedge body is formed with a pair of wedge pieces by inclining the end edges of the side plates facing each other, which are continuously provided on both sides of the elongated top plate, and the wedge plate is formed on the top plate. A guide hole through which the locking head portion can be inserted is provided on the short side of the piece, and an engagement hole that extends in the longitudinal direction continuously with the guide hole and through which only the narrowed portion can slide is provided. ing.

[0006]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a fastener 1 according to the present invention. The fastener 1 comprises a headed pin 2 and a wedge body 3 which is detachably attached to a tip portion of the headed pin 2. It is configured.

The headed pin 2 has a head portion 4 at the rear end, a locking head portion 5 and a narrowed portion 6 adjacent to the locking head portion 5 at the front end portion, and the locking head portion is provided. A locking step portion 7 is formed at the boundary between the narrow portion 5 and the narrowed portion 6. As shown in FIG. 2, the locking head 5 is formed into an oval shape having a constant width A by cutting the pin tip portion with two parallel planes 5a, 5a, while the narrowed portion is formed. 6 is cut by two planes 6a, 6a that are parallel to each other inside the planes 5a, 5a, and is formed into a thin short shape having a width B narrower than the width A.
As a result, the locking step portion 7 is formed at the boundary between the flat surface 5a and the flat surface 6a.

The wedge body 3 is formed by punching out a metal plate and bending it into a U-shape. A pair of wedge pieces is formed to be inclined. The top plate 8 is provided with a guide hole 10 having a width A ′ slightly wider than the width A so that the locking head 5 can be inserted into the short side of the wedge piece (side plate) 9, and the guide hole 10 is also provided. An engagement hole 11 having a width B ′ slightly wider than the width B is provided so as to extend in the longitudinal direction continuously with the hole 10 so that only the narrowed portion 6 can slide.

FIG. 4 shows an example of use of the fastener 1 having the above structure. Two plate-like members 1 to be fastened
5, 16 are provided with through holes 17 in advance, and the head pin 2 is inserted into the through holes 17, and the locking head 5 protruding from one member 15 is indicated by a phantom line in FIG. Then, the wedge body 3 is mounted from the direction of arrow A, the guide hole 10 is fitted to the locking head 5, and then the wedge body 3 is inserted in the posture in which the engagement hole 11 is engaged with the narrowed portion 6. When pushed down in the direction of (b), a tensile force acts on the headed pin 2 via the locking step portion 7 with which the top plate 8 abuts due to the wedge effect of both wedge pieces (side plates) 9, 9.
The head 4 of the headed pin 2 and the wedge body 3 form both plate-like members 15, 1
6 is clamped and fixed. Then, if the operation opposite to the above is applied to the wedge body 3, the wedge body 3 can be easily detached from the headed pin 2.

When the member to be fastened is thin, a headed pin 2 having a short length may be used. Therefore, by preparing several types of headed pins 2 having different lengths, the wedge body 3 can be applied to members having different thicknesses without changing.

[0012]

As described above, according to the present invention,
By using the headed pin 2 and the wedge body 3 having a simple structure, a plurality of plate members can be fastened very easily and quickly, and the detaching work is also easy. Therefore, the fastener of the present invention is
It is suitable for temporarily fixing and holding a plurality of plate members and can be used for various purposes, but is most suitable for use in, for example, assembling concrete formwork.

[Brief description of drawings]

FIG. 1 is an exploded perspective view of a fastener according to the present invention.

FIG. 2 shows a pin with the same head, (a) is a front view,
(B) is a side view and (c) is an end view.

3A and 3B show the wedge body, in which FIG. 3A is a plan view and FIG.
Is a sectional view taken along line bb of (a), (c) is a right side view,
(D) is sectional drawing which follows the dd line of (a).

FIG. 4 is a longitudinal sectional view of a main part showing a usage state of the fastener according to the present invention.

[Explanation of Codes] 1 Fastener 2 Headed pin 3 Wedge body 4 Head 5 Locking head 6 Constriction part 7 Locking step part 8 Top plate 9 Wedge piece (side plate) 10 Guide hole 11 Engagement hole 15, 16 Plate-shaped member 17 Through hole

Claims (2)

[Claims] 1. A headed pin that is inserted into through holes provided in a plurality of members to be fastened, and a wedge body that is detachably assembled to a tip end portion of the headed pin, wherein the headed pin has a tip. A locking head portion and a narrowing portion provided adjacent to the locking head portion, and a locking step portion is formed at a boundary between the locking head portion and the narrowing portion, On the other hand, in the wedge body, a pair of wedge pieces is formed by inclining end edges of side plates facing each other, which are continuously provided on both sides of an elongated top plate. A guide hole through which the locking head portion can be inserted is provided, and an engagement hole that extends in the longitudinal direction continuously to the guide hole and through which only the narrowed portion can slide is provided. Fastener. 2. The fastener according to claim 1, wherein the wedge body is formed by bending a metal plate into a U-shaped cross section.