JPH10159186A - Drift pin for building member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a drift pin capable of firm and tight connection hardly causing looseness due to vibration, dryness of wood, etc. SOLUTION: A drift pin 10 is constituted of a pin part 10a to be fitted in a coupler member and a connecting part of building members positioned on both sides by sandwiching the coupler member with the coupler member and an inclined right angled triangular plate type screw vane part 10b the head end acute-angle part of which is directed in the head end direction of the pin part 10a and biting in one of the connecting parts of the building member with the coupler member. Consequently, the screw vane part 10b comes to be in a state of biting in the building member like a screw at the point of time when the pin part 10a is fitted, and accordingly, looseness due to vibration, dryness of wood, etc., is hardly caused, and it is possible to carry out firm and tight connection.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a drift pin for fastening a building member to a joint member connecting the building members, and relates to a technique for improving the fastening ability.

[0002]

2. Description of the Related Art In recent years, by building a framework by connecting building members using a joint device, the connection of building members can be completed only by a simple operation of using fastening means such as simple bolting. A technique has been proposed in which various types of houses can be successively constructed according to a demand of a consumer using a small number of standard products, as if combining block toys of various shapes.

[0003] For example, Japanese Patent Application Laid-Open No. 63-233136 discloses a joint device for a building member for connecting a floor beam, a column and the like. This joint device is composed of a basic joint member and first and second applied joint members selectively assembled thereto. That is, as shown in FIG. 4, the column base metal member 1 as the basic joint member is formed by welding a pair of side plate portions 1 a facing each other at a predetermined interval to an intermediate plate portion 1 b serving as a fastening portion to the column 2. It is formed in a connected horizontal section H shape. An end plate portion 1c extending in a direction substantially perpendicular to the surface of the side plate portion 1a and the surface of the intermediate plate portion 1b is welded to the bottom of the vertical groove portion of the column base metal fitting 1 by welding.

On the other hand, the base connection plate 3 as the first applied joint member has its side end joined to the outer surface of the side plate portion 1a of the column base metal fitting 1 by welding or the like.
A plate portion extending from the outer surface of the side plate portion 1a to the same plane as the intermediate plate portion 1b and serving as a fastening portion to the base 4. Further, the beam connecting hardware 5 as the second applied joint member can be coupled to an end of the column 2 which is inserted between the side plates 1a and 1b of the column base hardware 1 and coupled by a fastener. A side plate portion 5a serving as a fastening portion to the column 2 and a connecting plate portion 5b extending from a central portion of the surface of the side plate portion 5a into a plane substantially orthogonal to the surface and serving as a fastening portion to the floor beam 6 are provided.

[0005] For example, to fasten the base 4, a groove 4 a formed in advance at the center of the joint end of the base 4 is formed.
Then, the base connection plate 3 is inserted, and the bolts inserted from the insertion holes on one side of the base 4 are inserted through the insertion holes of the base connection plate 3,
Further, the insertion hole on the other side of the base 4 is inserted, and the nut is fitted to the tip of the bolt. However, as described above, when the base 4 is fastened to the base connecting plate 3 or when the floor beam 6 is fastened to the connecting plate 5b of the beam connecting hardware 5, a drift pin may be used instead of the bolt. Conceivable.

As shown in FIG. 5, for example, the drift pin 7 is driven through a fitting hole 6a on one side of the floor beam 6 to fit the fitting hole 8 of the connecting plate portion 5b of the beam connecting hardware 5 into the floor beam 6. It is only necessary to fit into the fitting hole 6b on the other side, which is advantageous in that simple and speedy work can be performed as compared with the case where the floor beam 6 is tightened to the joint member by bolting.

[0007]

However, such a conventional drift pin 7 has only a simple round bar-shaped pin portion 7a, and the friction between the pin portion 7a and the wood is small. For this reason, there is a problem that loosening due to vibration, drying of the wood, or the like is apt to occur, and a firm binding cannot be performed, such as easy detachment.

SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and provides a drift pin for a building member which is hardly loosened or dislodged due to vibration, drying of wood, or the like, and which can perform firm binding. As an issue.

[0009]

According to a first aspect of the present invention, there is provided a drift pin for connecting a building member to a joint member for connecting the building members, wherein the joint member and the joint member are connected to each other. A pin portion to be fitted into a joint portion between the building member and the joint member located on both sides with the member interposed therebetween,
A plurality of screw blades provided so as to protrude from a plurality of positions spaced apart in the circumferential direction of the base outer peripheral surface of the pin portion, and the screw blade portion has a tip portion directed toward the pin portion tip direction. In the outer peripheral surface of the pin portion, they are disposed along lines that are inclined at predetermined angles and at predetermined angles with respect to lines that are parallel to the center axis of the pin portion in the direction in which the pin portion extends, and when the pin portion is fitted. It is characterized in that the pin portion and the screw blade portion bite into one of the joint portions of the building member with the joint member while rotating like a screw, thereby having a function of preventing detachment.

According to a second aspect of the present invention, the burr portion is
It was formed in a triangular plate shape.

[0011]

Embodiments of the present invention will be described below with reference to the drawings. In FIG. 1, a drift pin 10 for fastening a building member to a joint member for connecting building members to each other.
A pin portion 10a fitted into the joint member and a joint portion of the building member located on both sides of the joint member with the joint member interposed therebetween; and a circumferentially spaced base portion outer peripheral surface of the pin portion 10a. And a plurality of screw blades 10b extending from two positions (in this embodiment, two positions).

Here, the pin portion 10a is formed in a round bar shape, and the outer peripheral edge of the tip is chamfered. The screw blade portion 10b is formed in a right-angled triangular plate shape, and a sharp end portion is directed toward the tip end of the pin portion 10a,
In addition, on the outer peripheral surface of the pin portion, they are arranged along lines that are inclined at a predetermined direction and at an angle with respect to a line parallel to the center axis of the pin portion in a direction in which the pin portion extends.

In this case, the long side of the two sides of the screw blade 10b in a right angle relationship with the triangle is the pin 10a.
The short side portion is connected to the outer peripheral surface, and is located flush with the base end surface of the pin portion 10a. The drift pin 10 is made of steel, and is manufactured by press working by cold forging.

In the drift pin 10 having the above structure,
Two screw blade portions 10b are prepared, and a pin portion 10a
Are provided at two positions separated from each other by 180 ° in the circumferential direction of the base outer peripheral surface. The configuration is a so-called two-screw blade. Next, the drift pin 10 having such a configuration will be described.
Will be described with reference to FIG. 2 and FIG.

In the figure, a side plate portion 12a of a beam connecting hardware 12 is fastened to a side surface of a head portion of a lower pillar 11B among upper and lower pillars 11A and 11B. A connecting plate portion 12b extending from a central portion of the surface of the side plate portion 12a of the beam connecting hardware 12 into a plane substantially orthogonal to the surface is inserted into a groove 13a previously formed at the center of the joint end of the beam 13. Then, the drift pin 10 is connected to one of the connecting portions 13A and 13B located on both sides with the groove 13a of the beam 13 interposed therebetween.
Of the beam connecting hardware 12 into the fitting hole 15 of the connecting plate portion 12b of the beam connecting hardware 12 and the fitting hole 16 of the other connecting portion 13B of the floor beam 13. The connecting plate 12b and the beam 13 are tightly connected.

At this point, when the screw portion 10b of the drift pin 10 is fitted with the pin portion 10a as described above, the screw blade portions 10b of the connecting portions 13A, 13B located on both sides with the groove 13a of the beam 13 interposed therebetween. It digs into one of the joints 13A. In this case, when the drift pin 10 is driven, the pin portion 10a and the screw blade portion 10b advance while rotating, and each screw blade portion 10b bites into the joint of the building member while being twisted like a screw.

The driving of the drift pin 10 is performed by hitting with a genno, and tools such as impacts are not required.
Further, a nailing machine may be used. According to the drift pin 10 having such a configuration, two screw blade portions 10b are provided on the outer peripheral surface of the base portion of the round bar-shaped pin portion 10a, so that the pin portion 10a is a connecting plate portion between the beam 13 and the beam connecting hardware 12. 12b, the screw blade 10
Since b cuts into one of the connecting portions 13A and 13B located on both sides of the groove 13a of the beam 13, the loosening due to vibration, drying of the wood, and the like is unlikely to occur, so that firm binding can be performed. become.

Moreover, since each screw blade 10b is twisted like a screw and bites into the connecting portion of the building member, it does not return once it bites and does not come off. You will be able to bond. In addition, since the screw blade portion 10b is formed in a triangular plate shape, a wedge effect is obtained, and more firm binding can be performed.

Although the above-described drift pin 10 has a configuration of two screw blades, the present invention is not limited to this, and may have a configuration of three screw blades or four screw blades. In the case of the configuration of the three screw blades, the pin 10
a is provided at three positions spaced apart from each other in the circumferential direction of the base outer peripheral surface by a relationship of 120 °, and in the case of a configuration of four screw blades, 90 ° in the circumferential direction of the base outer peripheral surface of the pin portion 10a.
Are provided at four positions separated from each other.

In addition, the length of the drift pin 10 is basically limited to two types, and it is preferable to perform color coding so as not to make a mistake when using the pin. Further, the length and the thickness may be freely selected according to the thickness, cross-sectional shape, load condition, and the like of the beam. Further, the shape of the screw blade 10b may be freely changed according to the application.

[0021]

As described above, according to the first aspect of the present invention, when the pin portion of the drift pin is fitted to the building member and the joint member, the screw blade bites into the connecting portion of the building member. It is hard to loosen due to vibration, drying of wood, etc., and tight binding can be performed.Especially, each screw blade part is biting into the connecting part of the building member while being twisted like a screw It does not return and does not come off, so a tighter bond can be made.

According to the second aspect of the present invention, since the screw blade portion is formed in a triangular plate shape, there is an advantage that a wedge effect can be obtained and firmer tightening can be performed.

[Brief description of the drawings]

FIG. 1 is a view showing one embodiment of a drift pin of the present invention, wherein (A) is a front view, (B) is a side view, and (C) is a top view.

FIG. 2 is a perspective view illustrating a binding method using a drift pin according to the embodiment.

FIG. 3 is a cross-sectional view showing a tightened state by a drift pin.

FIG. 4 is a perspective view showing a configuration of a joint device.

FIG. 5 is a perspective view illustrating a conventional binding method using a drift pin.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Drift pin 10a Pin part 10b Screw blade part 12 Beam connection hardware 13 Beam 13A, 13B Coupling part 14, 15, 16 Fitting hole

Claims (2)

[Claims] A drift pin for fastening a building member to a joint member connecting the building members to each other, wherein a joint between the joint member and a joint member of a building member located on both sides of the joint member. And a plurality of screw blades provided so as to protrude from a plurality of positions spaced apart in a circumferential direction of a base outer peripheral surface of the pin portion, and the screw blade has a tip. The portion is oriented in the direction of the tip of the pin portion, and is disposed along a line inclined in a predetermined direction and at an angle with respect to a line parallel to the central axis of the pin portion in the extending direction of the pin portion on the outer peripheral surface of the pin portion. It is provided that, when the pin portion is fitted, the pin portion and the screw blade portion bite into one of the coupling portions of the building member with the joint member while rotating like a screw, thereby having a function of preventing disengagement. Features Drift pins for building components. 2. The drift pin for a building member according to claim 1, wherein said binding portion is formed in a triangular plate shape.