JPH09100824A - Binding metal-fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To connect a connecting member with a connected member so as not to be pulled out only by inserting the connecting member from one side into a hole bored in the joint part between the connecting member and the connected member. SOLUTION: In a rod type body 1, the first locking piece 2 and the second locking piece 3 are protruded separately in the base part and on the tip side individually, and between the locking pieces 2, 3, a belleville spring 6 is arranged in the rod type body 1. On the rod type body 1 tip side, a cup-shaped spring 7, whose circumference part is spread from the bottom part to the edge and can be expanded/shrunk, is brought into contact with the second locking piece 3, and respective recessed faces in the belleville spring 6 and in the cup-shaped spring 7 are arranged face to face, while the recessed face of the belleville spring 6 is arranged opposedly to the edge of the cup-shaped spring 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a metal fitting which can be joined to a joining material and a material to be joined by making a hole in the joining portion and inserting the hole from one side so as not to separate the joining material.

[0002]

2. Description of the Related Art When constructing a long roof material or a wall material in a steel structure building, the most commonly used method is to make a joint hole between the steel frame and the construction material, and attach a bolt to the hole. It is a bolt-nut method in which the construction material is passed through and the nut is tightened from the steel frame side. This construction method has the advantage that the work is easy and the bolts and nuts to be used are inexpensive, but since workability is poor and there are application sites depending on the structure of the building, improvements have been desired over the past.

For example, since it is necessary to position the construction material in the state where the nut is temporarily tightened and then to firmly tighten the bolt and the nut with a tool such as a wrench or a spanner, it takes time to tighten the nut. If the construction material is wide, one person cannot tighten it, so one person is required for each of the steel frame side and the construction material side. Furthermore, even if it can be tightened by one person, both hands must be used for tightening, so when the work place is bad, it is dangerous and the tightening is likely to be weak. Moreover, since a tool is required to tighten the nut, it cannot be applied to a place where the tool cannot be used on the nut side.

Blind rivet method, one-side bolt method and the like are available as methods without such a problem.
These methods are used to join thin steel plates together,
If the joining material is thick like steel, it cannot be used and the joining strength is weak. In addition, since it is necessary to carry and join a dedicated electric power tool, it is laborious to move.

[0005]

DISCLOSURE OF THE INVENTION The present invention has a joining strength like that of a bolt-nut method by simply making a hole in a joining material and a material to be joined and inserting the hole into the joining material, and a dedicated tool for insertion. It is to provide a binding fitting that does not require.

[0006]

According to the binding metal fitting of the present invention, a first locking piece and a second locking piece are provided on a base portion of a rod-shaped body and a tip end side of the base portion so as to be spaced apart from each other, and both locking portions are provided. A disc spring is arranged on the rod-shaped body between the pieces, and a cup-shaped spring whose peripheral portion expands toward the edge from the bottom and expands and contracts is fixed to the tip end side of the rod-shaped body of the second locking piece. The recessed surfaces of the spring are opposed to each other, and the recessed surface of the disc spring and the edge of the cup-shaped spring are opposed to each other.

[0007]

When the roofing material is applied to the steel frame of the building with the binding metal fitting of the present invention, the same points as the holes for joining are formed in the steel frame and the roofing material as in the conventional bolt-nut method.
The joint hole should be larger than the outer diameter of the disc spring and the bottom diameter when the cup-shaped spring is released, and smaller than the diameter of the peripheral edge. When the disc spring is in contact with the first locking piece and the cup-shaped spring is in contact with the tip end side of the rod-shaped body of the second locking piece, the space between the edges of the disc spring and the cup-shaped spring is tight. Is adjusted to be slightly smaller than the total thickness of the steel frame and the roofing material by the distance between the first locking piece and the second locking piece or the depth of the disc spring or the cup-shaped spring.

When the tip of the binding metal fitting is manually inserted into the joining hole with the distance between the joining hole in the steel frame and the roofing material and the first locking piece and the second locking piece of the binding metal fitting adjusted in this way. Since the periphery of the cup-shaped spring is wider at the edge, the binding member is inserted until the cup-shaped spring comes into contact with the hole, and stands upright even if it is not supported by hand. When the base is hit with a hammer in this state, the peripheral portion of the cup-shaped spring is contracted by the joint holes of the steel frame and the roof material and is inserted inside. On the other hand, when the peripheral part of the cup-shaped spring is deeply inserted into the hole for joining the steel frame and the roof material, the disc spring comes into contact with the roof material because the outer diameter is larger than the hole for joining, and then the cup-shaped spring is attached to the steel frame side. It is compressed to the side of the first locking piece as it is inserted into. This disc spring is compressed until the entire cup-shaped spring has passed to the steel frame side, but if it does not pass with the first shot of the hammer, continue hitting,
Pass it to the steel side.

When the cup-shaped spring passes through to the steel frame side, the cup-shaped spring is released from the joining hole, so that the peripheral portion instantly expands, the edge becomes larger than the joining hole, and the hammering is completed. At the moment, the edge of the disc spring came into contact with the steel frame due to the repulsive force of the disc spring,
Even if the repulsive force of the disc spring acts, it will not come out. For this reason, the disc spring and the cup-shaped spring hold the steel frame and the roofing material by hitting the base portion of the binding member with a hammer. Moreover, since the disc spring continues to push the steel frame and the roofing material by the repulsive force, the roofing material does not separate from the steel frame and adheres to the roofing material, so that the sealing property is good.

Although coil springs or leaf springs can be used in place of the disc springs, these springs cannot prevent rainwater from entering through the joint holes formed in the steel frame or roof material. The disc spring may be arranged by making a hole in the center of the disc spring and loosely fitting the disc spring, or by fixing the disc spring to the first locking piece or the rod body. In the former case, the disc spring is made larger than the diameter of the peripheral edge of the cup-shaped spring, and the hole drilled in the center is made smaller than the diameter of the peripheral edge of the cup-shaped spring, so that the cup-shaped spring is placed in the concave surface of the disc spring. If the peripheral edges of the disc springs are opposed to each other, the disc springs are supported by the peripheral edges of the cup-shaped spring, so that the disc springs do not drop during driving. On the other hand, in the latter case, a fixing means that does not impair the material of the disc spring, for example, an adhesive may be used for fixing to the first locking piece or the rod-shaped body.

The abutment of the cup-shaped spring to the second locking piece is performed by cutting a screw groove on the outer periphery of the tip side portion from the second locking piece protruding portion of the rod-shaped body so that the cup-shaped spring is rod-shaped from the tip side. After being loosely fitted to the body, it is preferable that a nut is screwed on the rod-shaped body so that the cup-shaped spring is held between the nut and the second locking piece. When fixed in this way, if the nut is removed when the roof material is replaced, the cup-shaped spring also falls from the tip side with it, and the rod-shaped body can be pulled out from the steel frame or the hole of the roof material. Then, by reattaching the cup-shaped spring and the nut to the rod-shaped body, it can be reused for constructing a new roofing material.

[0012]

1 to 4 show a binding fitting of the present invention. In FIGS. 1 to 3, the rod-shaped body 1 is a linear round rod,
A first locking piece 2 larger than the rod-shaped body 1 is integrally projectingly provided at the end portion on the base side thereof. The first locking piece 2 has a disk shape and is arranged concentrically with the center of the rod-shaped body 1, and both ends in an arbitrary diameter direction are ground linearly. Since this grinding is to be held by a wrench or spanner when the binding fitting is removed as described later, it may be formed in a polygonal shape. A second locking piece 3 is provided in a protruding manner at the middle portion of the rod-shaped body 1 in the length direction. The second locking piece 3 is provided so as to protrude from the tip portion 4 by making it thicker in a stepped shape. Second locking piece 3
A spacer portion 5 thicker than the second locking piece 3 is provided between the first locking piece 2 and the first locking piece 2, and a disc spring 6 having a recessed surface facing the tip end side of the rod-shaped body 1 is provided therein. It is fitted.

A screw groove is formed around the tip portion 4 from the tip to the second locking piece 3, and a cup-shaped spring 7 is arranged in such a portion that the recessed surface is located on the base side of the rod-shaped body 1. Has been inserted. The cup-shaped spring 7 has a truncated cone shape in which the diameter of the peripheral portion is expanded in a taper shape from the bottom side toward the edge side, and a plurality of cuts 8 extending from the edge toward the bottom are provided in the peripheral portion. The periphery has a spring structure that expands and contracts in the diametrical direction, and the diameter of the edge when expanding naturally is larger than the diameter of the spacer portion 5 and the loose fitting hole of the disc spring 6, but It is smaller than the spring 6. Therefore, the disc spring 6
This cup-shaped spring 7 prevents the spacer 5 from falling off. Further, as shown in FIG. 4, a hole 9 slightly larger than the tip portion 4 is formed at the center of the bottom portion, and the tip portion 4 of the rod-shaped body 1 is inserted into this hole 9. The nut 1 is attached to the tip portion 4 of the rod 1 through a washer 10.
1 is screwed to fix the cup-shaped spring 7 to the second locking piece 3.

In order to construct the roof plate 13 on the steel frame 12 of a building using this binding member, for example, the disc spring 6 and the cup-shaped spring when the disc spring 6 is in contact with the first locking piece 2. The depth of the cup-shaped spring 7 is adjusted so that the distance between the steel frames 12 and the roof plate 13 is smaller than the total thickness of the steel frame 12 and the roof plate 13. ,
A hole 14 for joining, which is smaller than the diameter of the edge of the cup-shaped spring 7, is drilled, and a binding metal fitting is manually placed there, and the tip portion 4 of the rod-shaped body 1 is handed.
Insert from. When the binding metal fitting is inserted in this way, it becomes difficult to insert it by hand when the cup-shaped spring 7 comes into contact with the joining hole 14, but since the binding metal fitting is held in the joining hole 14, it does not fall down and stands upright. ing.

In this state, the portion of the first locking piece 2 is hammered.
At one blow, the cup-shaped spring 7 is contracted at its peripheral portion by the joining hole 14, and the disc spring 6 moves to the first locking piece 2 and is compressed after abutting. After passing through the joining hole 14, the peripheral portion expands and becomes larger than the joining hole 14. When the cup-shaped spring 7 becomes larger than the joining hole 14, the cup-shaped spring 7 does not come off from the joining hole 14 and the disc spring 6 is in a compressed state. And steel frame 12 and shingles 1
Hold 3

If the roof plate 13 needs to be replaced after the post-construction period has passed, the linearly ground portion of the first locking piece 2 is pressed with a spanner or the like to loosen the nut 11. For example, the nut 11 can be removed from the tip portion 4 of the rod-shaped body 1. When the nut 11 is removed, the cup-shaped spring 7 also falls and the disc spring 6 is no longer compressed.
Can be pulled out from the joining hole 14. Rod-shaped body 1
If you attach the cup-shaped spring 7 and the nut 11 again,
Can be reused.

[0017]

As described above, in the binding metal fitting of the present invention, a hole is made in the joining material and the material to be joined, the tip side is inserted therein, and then the hammer is driven from one side with a hammering tool. Since both materials can be joined by just using the conventional method, the joining time is shorter than the conventional bolt-nut method, and even if the joining material has a wide width, it can be joined by one person. Furthermore, if it is inserted into the joining hole, it is held in an upright state, so that it is possible to work with only one hand. Therefore, even if the work place is bad, one hand can be grasped and it is safe. Also, since the tightening strength is determined by the distance between the disc spring and the cup-shaped spring, the tightening strength is constant regardless of the work place or the force of the worker, and the nut on the tip side does not have to be tightened when joining. It can be used as long as there is a narrow gap for inserting the spring.

[Brief description of the drawings]

FIG. 1 is a side view of an embodiment of a binding fitting according to the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a sectional view taken along line AA of FIG.

FIG. 4 is a plan view of a cup-shaped spring.

FIG. 5 is a cross-sectional view of a case where a steel frame and a roof plate are joined with a binding metal fitting.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Rod-shaped body, 2 ... 1st locking piece, 3 ... 2nd locking piece, 4 ... Tip part, 5 ... Spacer part, 6 ... Belleville spring, 7 ... Cup spring, 8 ... Notch, 9 ... Holes, 10 ... washers, 11 ...
Nut, 12 ... Steel frame, 13 ... Roof plate, 14 ... Hole for joining,

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuko Fukuhara 1st day, 7th Takatani Shinmachi, Ichikawa City, Chiba Nisshin Steel Co., Ltd. Building Materials Product Development Center, Building Materials Business Promotion Headquarters Hiroshima City Higashi-ku 1-3-1 Hontech Co., Ltd. (72) Inventor Shigeru Tamura Hiroshima Prefecture Hiroshima-shi Higashi-ku 1-3-3 Hiratech Co., Ltd.

Claims (2)

[Claims] 1. A base spring of a rod-shaped body and a first locking piece and a second locking piece projectingly spaced apart from the base of the rod-shaped body, and a disc spring is arranged on the rod-shaped body between the locking pieces. At the same time, a cup-shaped spring whose peripheral portion expands toward the edge from the bottom portion and expands and contracts is brought into contact with the tip end side of the rod-shaped body of the second locking piece, and the concave surfaces of the disc spring and the cup-shaped spring are opposed to each other. The binding metal fitting is characterized in that the recessed surface of the disc spring and the edge of the cup-shaped spring face each other. 2. A rod-shaped body is provided with a screw groove on the outer periphery on the tip side from the second locking piece projecting portion, and a hole is formed in the bottom of the cup-shaped spring to allow the cup-shaped spring to move from the tip side to the rod-shaped body. The fastening metal fitting according to claim 1, wherein a nut is screwed into the rod-shaped body after the fitting and the cup-shaped spring is fixed to the second locking piece.