JPS62192274A - Linking method for hard member - Google Patents

Abstract

PURPOSE:To surely weld a metallic stopper and metallic base material by fixing the shank part of a metallic stopper by penetrating it into a hard member and by melting the projection and the vicinity part thereof by electrifying the projection via a contact jig in the state of abutting it to the metallic base material. CONSTITUTION:A shank part 11 is fixed with penetration by driving a stopper 10 into a wooden brick 22 first in case of linking the wooden brick 22 (hard member) to the stud 21 (metallic base material) of U shaped cross section in long size. In this way the driving part 16 and electric contact part 15 are projected from the face 22b of the wooden brick 22. The opposing face between the projection 13 of the stopper 10 and stud 21 is linked with its melting by passing a current via a contact jig 25 and the other contact jig 26 which pinches the stud 21 by pressing the projection 13 of the stopper 10 to the stud 21 by pinching the electric contact part 15 of the stopper 10 with the contact jig 25. Thereafter, the tip from the drawing part 14 is removed by hammering the driving part 16 by a hammer.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention This invention relates to a method for connecting a rigid member to a metal substrate.

(Prior art) In a prefabricated house, a metal crosspiece is fixed to the back side of the peripheral edge of an exterior wall panel, and the crosspiece of an adjacent exterior wall panel is fixed to a long stud (metal base material) with rivets, etc. The outer wall is constructed by doing this. In addition, real bricks (hard members) are connected to the inside of the studs, which have a cross-sectional shape, and interior walls are constructed by fixing interior materials to these real bricks by nailing or the like.

Conventionally, wood screws have been used to connect the wood bricks to studs. That is, holes are formed in the studs, and wood screws are driven into the wood bricks through these holes.

(Problems to be Solved by the Invention) However, in the above method, it took time and effort to form holes in the studs and to screw and connect a large number of wood bolts through these holes.

Further, when connecting a hard member to a metal base material, there are methods of using screw nails or tapping screws, but neither method is satisfactory in terms of workability, precision, etc.

A technique similar to the present invention can be found in Japanese Patent Laid-Open No. 49-43056. This technique attaches the insulation material to the metal base material by inserting rivets into the insulation material and welding it to the metal base material while holding the welding gun by hand. This technology is applicable only to

Therefore, the present applicant connected the hard member to the metal base material by using a metal stopper, penetrating and fixing the metal stopper to the hard member, and welding it to the metal base material. We are developing a method to do so. What is important about this technology is that when a large current is applied, heat generation and melting are concentrated at the contact area between the metal stopper and the metal profiteer, and in particular, between the metal stopper and the contact jig. The goal is to improve the contact state, reduce the electrical resistance at this location, and promote heat generation and melting. An idea from this point of view can be seen in the specification of Japanese Patent Application No. 168436/1980, but even more ideas have been desired.

(Means for Solving the Problems) This invention has been made to solve the above problems, and its main point is that in a method of connecting a hard member to a metal profiteer, a shank portion and one end of the shank portion are provided. using a metal stopper equipped with a small-diameter protrusion provided at the shank portion and an electrical contact portion provided at the other end of the shank portion via a constriction portion,
The shank part of this metal stopper is penetrated and fixed to a hard member, and then, with the protrusion of the metal stopper in contact with the metal base (・), the contact that comes into contact with the electrical contact part of the metal stopper Electricity is passed between the jig and the contact jig that is in contact with the metal base material, and the heat generated by this current melts the protrusion of the metal stopper and its vicinity, and the assimilation of this molten metal causes 1) A method for connecting a hard member, characterized in that: 1) the electric contact portion is removed from the shank portion by connecting the hard member and the metal profiteer, and then breaking the constricted portion of the metal base material; It is in.

(Function) The shank portion of the metal stopper is penetrated and fixed to a hard member. Next, with the protrusion of this metal stopper in contact with the metal base material, the contact jig that contacted the metal base material and the contact jig that contacted the electrical contact part of the metal stopper Electricity is applied to the metal stopper, and the heat generated by the current melts the protrusion of the metal fastener and its vicinity, and the solidification of the molten metal connects the hard member and the metal base material. During this welding, the electrical contact part of the metal stopper protrudes from the hard member, making it possible to make good contact with the contact jig, causing heat generation and melting at the contact part between the protrusion and the metal base material. This can be achieved by focusing only on Next, the electrical contact portion is removed from the shank portion by breaking the constricted portion of the metal base material.

(Example) First, a metal stopper used in carrying out the method of this invention will be described with reference to FIGS. 1 and 2. This stopper 10 has a shank portion 11. At one end of this shank portion 11, a flange ′, 2 larger than the diameter of the shank portion 11 is formed, and furthermore, a protrusion @ 13 having a smaller diameter than the shank portion 11 is formed at the center of this flange portion 12. . An electrical contact portion 15 having approximately the same diameter as the shank portion 11 is formed at the other end of the shank portion 11 via a constriction portion 14, and from this electrical contact portion 15, a driving portion 1 is further formed.
6 is extended. The driving portion 16 has a sharp tip.

Each component 11 to 16 of the stopper 10 is concentric,
The overall shape is similar to that of a nail.

In the method of the present invention, using the above-mentioned stopper 10, a wooden brick 2
2 (non-conductive hard member).

First, the stopper 10 is driven into the main brick 22.

That is, the flange part 12 is directly driven into the wooden brick 22 from the driving part 16 using an automatic nail driver. This results in
The shank part 11 is fixed through the main brick 22, and the flange part 1
2 is in contact with one surface 22a of the main brick 22. Further, the driving portion 16 and the electric contact portion 15 protrude from the other surface 221 of the wooden brick 22. The constricted portion 1.1 is located near this surface 221].

Next, as shown in FIG.
5 between the contact jig 25 and the protrusion 13 of the stopper 10.
Press it against the stud 21. This contact jig 25 is provided in a welding gun (not shown) provided with a handle. On the other hand, the stud 21 is sandwiched between the metal contact jigs 26. The contact jigs 25 and 26 are respectively connected to both poles of a capacitor (not shown), and when the welding gun is turned on, the contact jigs 25 and 26 are connected to the capacitor by the contact jigs 25 and 10. Stud 21. An electrical circuit is formed that returns to the capacitor via the contact jig 26. As a result, the electricity stored in the capacitor instantly flows and sparks between the protrusion 13 of the stopper 10 and the stud 21. The heat of this spark melts the protrusion 13 of the stopper 10 and the opposing surfaces of the collar 12 and the stud 21.

As shown in FIG. 2, as the molten metal solidifies (indicated by 17 in FIG. 2), the stopper 10 is melted onto the stud 21, and as a result, the wooden brick 22 is attached to the stud 21.
connected to.

When the spark occurs, since the electric contact portion 15 protrudes from the wooden brick 22, the contact jig 25 can make good contact with the electric contact portion 15 over a relatively wide area without any restrictions. The electrical resistance between them is much smaller than the electrical resistance between the protrusion 13 and the stud 21. As a result, the generation of spark between the protrusion 13 and the stud 21 can be ensured, and heat generation and melting can be concentrated only at this location. Further, in order to prevent sparks from being generated between the electrical contact portion 15 and the contact jig 25, welding between these parts can be prevented.

In addition, the molten metal 1 is
7 occurs and solidifies, so the above connection can be made stronger by widening the welding area.

Next, by hitting the driving part 16 from the side with the hammer 27, the stopper 10 is broken at the constriction part 14, and the electrical contact part 15 and the driving part 16 are removed from the shank part 11. As a result, the stopper 10 does not protrude from the wooden bricks 22, and the attachment of the interior material to the wooden bricks 22 does not become a hindrance during work or the like.

This invention is not limited to the above-mentioned embodiments, and various embodiments are possible. For example, in the embodiment shown in FIG. 3, the stopper 30 includes a shank portion 31 having a male thread shape, a square collar portion 32 and a protrusion 33 provided at one end of the shank portion 31, and a diaphragm at the other end of the shank portion 31. It has an electrical contact part 35 provided via a part 34. When using this fastener 30, a screw hole 23 is made in advance in the main brick 22. Then, the shank portion 31 is screwed into the threaded hole 23 and fixed therethrough. The steps after fixing the stopper 30 to the wooden brick 22 are the same as in the previous embodiment.

The embodiment of FIG. 4 also uses a stop 30 similar to the embodiment of FIG. 3. A through hole 24 is made in advance in the wooden brick 22. Then, the shank portion 31 of the stopper 30 is passed through the through hole 24, and the nut 37 screwed into the shank portion 31 is tightened and fixed. In this case, the constricted portion 34 is located near the surface 37a of the nut 37.

The following steps are the same as in the previous example.

Furthermore, it is also not possible to use non-conductive materials such as plywood or wood cement boards as the hard member. Furthermore, a hole may be made in advance in the conductive hard member, and a metal stopper may be fixed through the hole through an insulating layer such as a resin tube.

(Effects of the Invention) As explained above, in this invention, during welding, the electrical contact part of the metal stopper protrudes from the hard member, so it is possible to make good contact with the contact jig, and the small diameter Heat generation and melting can be concentrated only at the contact portion between the protrusion and the metal base material, and therefore, the welding between the metal stopper and the metal base material can be ensured, and
Welding between the metal stopper and the contact jig can be prevented. Moreover, by folding the electric contact part at the constriction part and removing it from the shank part, it is possible to prevent the stopper from interfering with subsequent work.

[Brief explanation of drawings]

1 and 2 show an embodiment of the present invention, FIG. 1 is a cross-sectional view showing the state immediately before the hard member is connected to the metal base A, and FIG. 2 is the hard member. FIG. 3 is a sectional view illustrating the operation of folding the metal stopper at the constriction portion after connecting the metal stopper to the metal base material. FIG. 4 is a diagram corresponding to FIG. 1 showing different pond embodiments.

Claims (1)

[Claims] (1) In a method of connecting a hard member to a metal base material,
Using a metal stopper having a shank part, a small diameter protrusion provided at one end of the shank part, and an electrical contact part provided through a constriction part at the other end of the shank part, this metal stopper is used. The shank part of the tool is fixed through the hard member, and then
With the protrusion of the metal stopper in contact with the metal base material, electricity is passed between the contact jig that is in contact with the electrical contact part of the metal stopper and the contact jig that is in contact with the metal base material. The heat generated by this current melts the protrusion of the metal stopper and its vicinity, solidifies the molten metal to connect the hard member and the metal base material, and then draws the metal base material. A method for connecting rigid members, characterized in that an electrical contact part is removed from a shank part by folding the part.