JP2019044398A - Connection pin and connection structure of horizontal member - Google Patents

Abstract

To provide a connection pin capable of suppressing generation of damage such as splitting to a structural material as it deforms more easily than before, and to provide a connection structure of a horizontal member using the connection pin.SOLUTION: By inserting a connection pin 10 in a connection hole 3h provided at a connection metal fitting 3 and a hole 2h provided at an end part of a horizontal member 2, the end part of the horizontal member 2 can be connected to the connection metal fitting 3 fixed to a structural material 1. The connection pin 10 is formed in a cylindrical shape, and one edge part 10a along an axial direction is overlapped with an inner peripheral surface of the other edge part 10b in the radial direction. Thus, the connection pin deforms more easily than a conventional connection pin, and it can suppress generation of damage such as splitting to the structural material.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a connection structure of a connection pin and a horizontal member.

  DESCRIPTION OF RELATED ART The thing of patent document 1 and patent document 2 is known as a connection pin of the timber for constructions used when connecting woods, for example. The connection pin described in Patent Document 1 is formed in this connection connection portion when the connection connection portion of the connection fitting fixed to one wood is inserted and connected to the connection portion formed in the other wood. A connecting pin inserted and fixed to the connecting hole and the fastening hole formed in the other wood, wherein a metal pipe or pipe-like metal is adopted, and the hollow part of the metal pipe or pipe-like metal is made of the metal A core made of a soft material is interposed, and the core is disposed so as to protrude at least from one end in the axial direction of the metal pipe or the pipe-like metal to form a projecting proximal end. The projection proximal end portion is set as a striking portion. In such a connecting pin, deformation of the connecting pin absorbs vibration caused by an earthquake or the like to prevent splitting of wood.

Further, the connecting pin described in Patent Document 2 is a columnar drift pin made of a plastically deformable metal and having a length substantially equal to the width of the member to be inserted among the members to be phase-fastened. The present invention is characterized in that a single or a plurality of constricted portions whose cross-sectional diameter is reduced as compared with both end portions in the longitudinal direction are provided at the central portion in the longitudinal direction. With such a connecting pin, even if an external force sufficient to damage the wood is applied to the drift pin, the plastic deformation of the connecting pin escapes the impact on the wood and avoids cracking of the wood.

Patent No. 4005610 JP, 2011-117191, A

By the way, in the connection pin of patent document 1 mentioned above, since it has a metal pipe or pipe-like metal and the core material penetrated to these, while a number of parts increases, processing degree becomes high. In addition, since the core material is formed of a material softer than the metal of the metal pipe or the pipe-like metal, it is easier to deform than when the connection pin is formed of a solid metal, but a cylindrical metal pipe It is difficult to deform compared to the case of.
Moreover, in the connection pin of patent document 2, although it comprises using the metal which can be plastically deformed, since the said connection pin is formed with a solid metal, a connection pin is formed by a cylindrical metal pipe. It is difficult to deform compared to the case where it is

  The present invention has been made in view of the above-mentioned circumstances, and is capable of suppressing the occurrence of damage such as splitting to a structural material by being easily deformed as compared with the prior art, and a cross member using this connection pin Aims to provide a connected structure of

In order to achieve the above object, the connecting pin of the present invention includes the connecting hole provided in the connecting fitting and the lateral bridge when connecting the end portion of the lateral extending member to the connecting fitting fixed to the structural member. A connecting pin inserted into a hole provided at an end of the material,
It is formed in a tubular shape, and one edge along the axial direction is characterized in that it radially overlaps the inner peripheral surface of the other edge.

Further, the connection structure of the horizontal members according to the present invention is a connection structure of horizontal members in which the end portion of the horizontal members is connected to a connection fitting fixed to the structural member,
The connection pin is inserted into a connection hole provided in the connection fitting and a hole provided at an end of the cross member.

In the present invention, the connecting member fixed to the structural member is inserted into the connecting member by inserting the connecting pin through the connecting hole provided in the connecting member and the hole provided in the end of the connecting member. The ends can be connected.
And since the connecting pin is formed in a cylindrical shape, and one edge along the axial direction overlaps the inner peripheral surface of the other edge in the radial direction, it becomes easier to deform than the conventional connecting pin, It is possible to suppress the occurrence of damage such as splitting to the structural material.
Further, since the diameter of the connecting pin can be reduced, the diameter is reduced as the deformation progresses, and the rigidity is reduced. Therefore, in the event of an earthquake, etc., deformation of the connection pin is induced, so that plasticization of the connection pin precedes, relieving stress concentration in the connection fitting and the joint that joins this connection fitting to the structural material, It is possible to prevent early breakage of the structural material.

In addition, in the above-mentioned configuration of the present invention, at least a part in the axial direction may have a tapered portion which is axially tapered.
According to such a configuration, the connection pin can be easily inserted by inserting the thin portion of the tapered portion into the connection hole and the hole.

Further, in the above-described configuration of the present invention, one or a plurality of notches extending in the axial direction at the end may be provided at predetermined intervals in the circumferential direction.
According to such a configuration, by inserting the end portion into the connection hole and the hole, the portion on both sides of the notch or the portion between the adjacent notches is bent radially inward. Since the diameter of the end portion is reduced, the connection pin can be easily inserted.

  In the above-mentioned composition of the present invention, the above-mentioned horizontal member may be lightweight H-shaped steel, and the above-mentioned hole may be provided in a web of this lightweight H-shaped steel.

  According to such a configuration, when the connection pin is inserted into the connection hole provided in the connection fitting and the hole provided in the web of lightweight H-shaped steel, the connection fitting fixed to the structural member is H It is possible to connect the ends of the crossbars made of shaped steel.

  According to the present invention, the connecting pin is formed in a tubular shape, and one edge along the axial direction overlaps the inner peripheral surface of the other edge in the radial direction, so that deformation is made in comparison with the conventional connecting pin It becomes easy to do and can control generating of damage to a structural material, such as a split.

BRIEF DESCRIPTION OF THE DRAWINGS It is a side view which shows the 1st Embodiment of this invention, and shows the connection structure of a horizontal member. It is the sectional view on the AA line in FIG. 1 equally. It is a sectional view of a connecting pin. Similarly, it is a side view explaining the method to connect a cross member to a connection metal fitting. It is a figure which similarly shows the deformation | transformation behavior of a connecting pin. It is a plane sectional view showing the modification of the connection structure of a cross member in the same. It is a perspective view which shows the 1st modification of a connecting pin equally. It is a side view which similarly shows the 1st modification of a connecting pin. It is a perspective view of the principal part which shows the 2nd modification of a connecting pin equally. The 2nd Embodiment of this invention is shown, and it is a plane sectional view which shows the connection structure of a horizontal member. 11 is a cross-sectional view taken along the line BB in FIG. It is a side view which shows the 3rd Embodiment of this invention, and demonstrates the method of connecting a horizontal member to a connection metal fitting. It is a plane sectional view explaining the method of connecting a cross member to a connection metal fitting equally. It is a plane sectional view showing the connection structure of a cross member in the same.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First Embodiment
1 to 3 show the first embodiment, and FIG. 1 is a side view showing a connecting structure of horizontal members, FIG. 2 is a sectional view taken along the line A-A in FIG. 1, and FIG. FIG.

As shown in FIGS. 1 and 2, a cross member 2 is connected to the structural member 1 via a connection fitting 3. The structural material 1 is, for example, a wood beam or lintel, and is formed in a rectangular shape in cross section. In addition, the structural material 1 may be a pillar or a wall without being limited to a beam or a fence.
The horizontal member 2 is formed of a lightweight H-shaped steel, and is constituted by upper and lower flanges 2a, 2a and a web 2b connecting the flanges 2a, 2a. The end of the lower flange 2a is cut out in a rectangular shape in a plan view, and the tip 2d of the cut portion is located on the center side of the horizontal member 2 with respect to the connection fitting 3. Therefore, as shown in FIG. 4, when the horizontal member 2 is suspended from above and connected to the connection fitting 3, the lower flange 2 a does not interfere with the connection fitting 3.
Further, as shown in FIG. 4, at the end of the web 2b of the cross member 2, three holes 2h are provided at predetermined intervals in the upper and lower direction.

The connection fitting 3 is formed to have a substantially U-shaped cross section, and a pair of connection plates 3a and 3a spaced apart in the width direction (vertical direction in FIG. 2) of the horizontal member 2 and the connection plates 3a and 3a. And a fixed plate 3b for connecting the proximal end of 3a.
The connecting plate 3a is formed in a rectangular plate shape, and a groove 3c is provided at the upper edge thereof, and two connecting holes 3h and 3h are provided below the groove 3c at predetermined intervals in the vertical direction. The distance between the connection holes 3h and 3h is equal to the distance between the lower two holes 2h and 2h among the three holes 2h. Further, the distance between the bottom of the groove 3c and the connection hole 3h immediately below the groove 3c is equal to the distance between the upper two holes 2h and 2h among the three holes 2h.

The fixing plate 3b is formed in a rectangular plate shape, and three through holes are provided in the widthwise central portion (the central portion in the vertical direction in FIG. 2).
Then, after affixing the fixing plate 3b to the side surface 1a of the structural material 1, the fixing plate 4b is driven or screwed into the three through holes to fix the fixing plate 3b to the side surface 1a. 3b is fixed. In this state, the connection plates 3a and 3a are disposed at right angles to the side surface 1a.

  When the cross member 2 is connected to the connection fitting 3 fixed to the structural member 1 in this manner, as shown in FIGS. 4 and 2, the cross member 2 from above the connection fitting 3 and its web 2 b It is hung by a crane or the like so as to be disposed substantially at the center between the connecting plates 3a and 3a, and the three holes 2h of the horizontal support 2 and the groove 3c of the connecting plates 3a and 3a And the two connection holes 3h, 3h are substantially coaxially aligned. In this case, when the cross member 2 is suspended by inserting the connecting pin 10 in advance through the hole 2 h of the uppermost step of the web 2 b, the connecting pin is inserted from above into the groove portions 3 c and 3 c of the connecting fitting 3. And fit into the bottoms of the grooves 3c, 3c. In addition, in FIG. 1 and FIG. 4, the connection pin 10 is hatched.

  By the connecting pin 10 being fitted into the bottom of the groove 3c, 3c, the cross member 2 is temporarily supported by the connection fitting 3, and the two lower holes 2h, 2h of the cross member 2 are provided. And the two connection holes 3h, 3h of the connection plates 3a, 3a are overlapped and substantially coaxially aligned. Then, the connection pin 10 is inserted into the connection hole 3h and the hole 2h by driving the connection pin 10 into the overlapped connection hole 3h and the hole 2h, whereby the end of the cross member 2 is connected to the connection fitting 3 Are linked.

As shown in FIG. 3, the connection pin 10 is formed in a cylindrical shape, and one edge 10 a along the axial direction radially overlaps the inner circumferential surface of the other edge 10 b. In this case, the outer peripheral surface of one edge 10a and the inner peripheral surface of the other edge 10b may be in contact with each other or may be separated in the radial direction. The point is that the overlapping length of one edge 10a and the other edge 10b in the circumferential direction is long, so that the diameter of the connecting pin 10 can be reduced, and the edges 10a and 10b are overlapped. It should just be.
Further, the diameter (outside diameter) D of the connecting pin 10 may be a size that can be inserted by being driven into the hole 2 h and the connecting hole 3 h, but diameter reduction is possible. Therefore, the diameter 2 h and the connecting hole 3 h A length slightly larger than the inner diameter is preferred. Specifically, the diameter D is preferably about 12 mm, but the diameter D is not limited thereto, and may be appropriately set according to the inner diameter of the hole 2 h and the connection hole 3 h.

When such a connection pin 10 is inserted into the hole 2 h and the connection hole 3 h by inserting it, the diameter of the connection pin 10 is slightly reduced in advance (the diameter is reduced), and fastening is performed with a fastening band. After inserting into 3h, the fastening band may be cut to expand the diameter using a force (elastic return force) that spreads like a spring to fix the hole 2h and the connection hole 3h. The binding position by the binding band is preferably the distal end portion of the connection pin 10, but may be a proximal end portion or another portion. Further, instead of the binding band, only the tip end portion of the connection pin 10 may be reduced in diameter using a tool, and the connection pin may be inserted into the hole 2 h and the connection hole 3 h.
Moreover, as for the board thickness t of the connection pin 10, about 1.6-4.5 mm is preferable. If the thickness is less than 1.6 mm, the plate thickness is too thin and the proof strength is too low, and the performance as the connection pin 10 can not be exhibited. If it exceeds 4.5 mm, the hollow portion inside the connection pin 10 almost disappears. While processing becomes difficult, diameter reduction may not be possible.

Such a connecting pin 10 is basically cylindrical, and as long as the diameter can be reduced, it may be cylindrical, elongated cylindrical or elliptical cylindrical, or polygonal cylindrical.
The following method can be mentioned to manufacture the cylindrical connection pin 10, but it is not limited thereto.
For example, a thin cylindrical steel sheet is subjected to roll forming to form a cylindrical cylindrical body, and one edge along the axial direction of the cylindrical body is inserted into the inner peripheral side of the other edge to form one edge The connecting pin may be manufactured by overlapping the other and the other edge in the radial direction and further cutting into a predetermined length, or by subjecting the thin steel plate to press forming, a cylindrical body with an arc-shaped cross section And insert one edge along the axial direction of this cylindrical body on the inner peripheral side of the other edge so that one edge and the other edge are overlapped in the radial direction, and further, a predetermined length The connection pin may be manufactured by cutting in a square shape, or the circular steel pipe may be cut in the axial direction, and one edge along the axial direction is inserted on the inner peripheral side of the other edge to make one edge By overlapping the part and the other edge in the radial direction, and further cutting into a predetermined length, It may be produced.

  In a connection structure in which the end of the horizontal member 2 is connected to the connection fitting 3 by such a connecting pin 10, for example, as schematically shown in FIG. , The horizontal member 2 moves downward, and the horizontal member 2 is connected to the connection fitting 3 by the connection pin 10. For this reason, before the structural member 1 to which the connection fitting 3 is fixed by the fastening member 4 is broken, the connection pin 10 is deformed so as to be bent downward in an arc shape. The connecting pin 10 is smaller in initial resistance and rigidity and smaller in diameter as compared with the conventional solid drift pin, and therefore, as the deformation progresses, the diameter is reduced and the rigidity is further reduced. Therefore, deformation of the connection pin 10 is induced, and rigid body rotation of the connection fitting 3 is suppressed, and the connection fitting 3 and a joint portion joining the connection fitting 3 to the structural member 1 (the fixing portion 3 b of the connection fitting 3, The stress concentration of the fastening member 4 fixing the fixing portion 3b to the structural member 1 and the side surface portion of the structural material 1 in which the fastening member 4 is driven is alleviated, and the early breakage of the structural member 1 is prevented. .

As described above, according to the present embodiment, the connection hole 3h provided in the connection fitting 3 and the hole 2h provided at the end of the cross member 2 are overlapped, and the connection hole 3h and the hole 2h are formed. By inserting the connecting pin 10, the end of the cross member 2 formed of lightweight H-shaped steel can be connected to the connecting fitting 3 fixed to the structural member 1 made of wood.
And since the connecting pin 10 is formed in a cylindrical shape and one edge 10a along the axial direction overlaps the inner peripheral surface of the other edge 10b in the radial direction, it is deformed compared to the conventional connecting pin As the deformation progresses, the diameter is reduced and the rigidity is further reduced. Therefore, the deformation of the connection pin 10 is induced, so that the plasticization of the connection pin 10 precedes, and the stress concentration in the connection fitting 3 and the joint portion connecting the connection fitting 3 to the structural member 1 is relaxed. It is possible to prevent early breakage of the structural member 1.

  In the present embodiment, the connection fitting 3 includes the two connection plates 3a and 3a. However, as shown in FIG. 6, the connection plate 3a may be one. In this case, the connection plate 3a is provided near the center in the width direction of the fixing plate 3b, and the fixing plate 3b is fixed to the side surface 1a of the structural material 1 by the fastening members 4 at two side portions thereof. . Further, the connecting plate 3a is stacked such that the connecting hole 3h is coaxial with the hole 2h of the web 2b, and is in contact with the web 2b of the cross member 2. The connection pin 10 is inserted through the connection hole 3 h and the hole 2 h.

7 and 8 show a first modification of the connecting pin, and FIG. 7 is a perspective view and FIG. 8 is a side view.
The connection pin 11 in the first modification has a tapered shape in the axial direction. That is, the connection pin 11 is formed by bending a rectangular plate (for example, a steel plate) into a substantially cylindrical shape, and one edge 11 a and the other edge 11 b along the axial direction of the connection pin 11. Is gradually extended from the proximal end of the connecting pin 11 to the distal end (from the left end to the right end in FIG. 7), thereby providing a tapered portion 11c that tapers in the entire axial direction. There is. Further, even if a trapezoidal plate material (for example, a steel plate) is bent into a substantially cylindrical shape and the overlapping length of one edge and the other edge along the axial direction of the connecting pin are equal, the axial direction Can form a connecting pin with a tapered shape.
The diameter (outer diameter) of the tip of the tapered portion 11c, that is, the tip of the connection pin 11, is preferably slightly smaller than the inner diameter of the connection hole 3h and the hole 2h.

According to the connection pin 11 of the first modified example, the connection pin 11 can be easily inserted by inserting it into the connection hole 3 h and the hole 2 h from the narrow side of the tapered portion 11 c, that is, the tip of the connection pin 11.
In addition, although the connection pin 11 has the taper part 11c in the whole axial direction, the taper part should just have at least one part of an axial direction. In that case, it is preferable to have the tapered portion on the tip end side of the connection pin 11.

FIG. 9 is a perspective view of the main part showing a second modification of the connecting pin.
The connecting pin 12 of the second modified example is formed with a plurality of notches 12a extending in the axial direction at the tip end at predetermined intervals in the circumferential direction, and between the notches 12a and 12a adjacent in the circumferential direction A piece 12b is provided.
According to the connecting pin 12 of the second modification, the piece 12b between the adjacent notches 12a and 12a is bent radially inward by being inserted into the connecting hole 3h and the hole 2h from the front end thereof Since the diameter of the end portion is reduced, the connecting pin 12 can be easily inserted.

  The notch 12a may be provided at the tip of the connection pin 11 described above. In this way, the connection pin 11 can be more easily inserted into the connection hole 3 h and the hole 2 h. Moreover, the number of the notches 12a may be one.

Second Embodiment
FIGS. 10 and 11 show the connecting structure of horizontal members according to the second embodiment, FIG. 10 is a plan sectional view, and FIG. 11 is a sectional view taken along the line B--B in FIG.
In the present embodiment, the horizontal member 21 is composed of the lightweight H-shaped steel 2 and the woods 5 and 5 provided on both sides of the web 2 b of the lightweight H-shaped steel 2. The wood 5, 5 has a rectangular cross section extending in the longitudinal direction of the lightweight H-section steel 2, the upper surface is in contact with the upper flange 2a of the lightweight H-shaped steel 2, and the lower surface is the lower flange 2a. Is in contact with
Further, the connection fitting 3 includes the fixing plate 3b and the connection plate 3a provided closer to the central portion in the width direction of the fixing plate 3b, like the connection fitting 3 shown in FIG. 6, and the fixing plate 3b is on the side It is being fixed to the side 1a of the structural material 1 by the fastening materials 4 and 4 at two places on the part side. The connecting plate 3a is stacked such that the connecting hole 3h is coaxial with the hole 2h of the web 2b. Furthermore, holes 5 h and 5 h are provided in the woods 5 and 5 coaxially with the connection holes 3 h and the holes 2 h.
The connection pin 10 is inserted through the connection hole 3h, the hole 2h and the holes 5h and 5h.

  According to the present embodiment, the composite-type cross member 21 including the lightweight H-shaped steel 2 and the wood 5 can be connected to the structural member 1 through the connection fitting 3. It goes without saying that the same effect as that of the first embodiment can be obtained.

Third Embodiment
FIGS. 12 to 14 show a connecting structure of horizontal members according to the third embodiment, and a side view for explaining a method of connecting a wooden horizontal member 22 to the connection fitting 3. FIG. FIG. 14 is a plan sectional view showing a connection structure of horizontal members. In the present embodiment, the same components as those of the first embodiment shown in FIGS. 1 to 4 are denoted by the same reference numerals, and the description thereof will be omitted or simplified.

In the present embodiment, a wooden horizontal member 22 is connected to the connection fitting 3. As shown in FIG. 13, a notch 22 a which is rectangular in cross section and vertically penetrates the cross member 22 is formed on the front end surface of the cross member 22. Further, slits 22b and 22b are formed on the bottom surface of the cutout 22a on the extension of the opposing side surfaces of the cutout 22a. The slits 22b and 22b are for inserting the connection plates 3a and 3a of the connection fitting 3. Further, a hole 22h penetrating from one side surface to the other side surface of the cross member 22 is provided so as to cross the slits 22b and 22b. Further, three holes 22 h are provided at predetermined intervals in the vertical direction at the end portion of the cross member 22.
Further, the fixing plate 3b of the connection fitting 3 is in contact with the side surface 1a of the structural material 1, and the fixing plate 3b passes through the structural material 1 and is fixed by a fastening material 4 such as a bolt.

  When the cross member 22 is connected to the connection fitting 3 fixed to the structural member 1, as shown in FIGS. 12 and 13, the cross member 22 from above the connection fitting 3 is connected to the slits 22b and 22b. Three connection plates 3a and 3a are inserted so as to be suspended by a crane or the like, and the three holes 22h of the cross member 22, the groove portions 3c of the connection plates 3a and 3a, and the two connection holes The 3h and 3h are almost coaxially aligned. In this case, when the cross member 22 is suspended by inserting the connection pin 10 in advance through the hole 22 h of the uppermost step of the cross member 22, the connection pin is positioned above the groove portions 3 c and 3 c of the connection fitting 3. And inserted into the bottoms of the grooves 3c, 3c. In FIG. 12, the connecting pin 10 is hatched.

  By the connection pin 10 being fitted into the bottom of the groove portions 3c, 3c, the cross member 22 is temporarily supported by the connection fitting 3, and the two lower holes 22h, 22h of the cross member 22 are provided. And the two connection holes 3h, 3h of the connection plates 3a, 3a are overlapped and substantially coaxially aligned. Then, as shown in FIG. 14, the connection pin 10 is inserted into the connection hole 3 h and the hole 22 h by driving the connection pin 10 into the superposed connection hole 3 h and the hole 22 h, thereby transversely to the connection fitting 3. The ends of the support members 22 are connected.

  According to the present embodiment, the wooden horizontal member 22 can be connected to the structural member 1 via the connection fitting 3. It goes without saying that the same effect as that of the first embodiment can be obtained.

  In the connection structure of horizontal members shown in FIGS. 2, 6, 10 and 11 and 12 to 14, respectively, the connection pin 11 shown in FIGS. 7 and 8 is used instead of the connection pin 10. The connecting pin 12 shown in FIG.

1 Structural material 2 Horizontal member (lightweight H-shaped steel)
Reference Numerals 21 and 22 Horizontal members 2h and 22h Holes 3 Connection fitting 3h Connection holes 10, 11 and 12 Connection pins 10a One edge 10b The other edge 11c Tapered portion

Claims (5)

When connecting an end of a cross member to a connection fitting fixed to a structural member, the connection is inserted through a connection hole provided in the connection fitting and a hole provided in the end of the cross member A pin,
A connecting pin which is formed in a tubular shape and in which one edge along the axial direction overlaps the inner circumferential surface of the other edge in the radial direction.   The connecting pin according to claim 1, wherein at least a portion in the axial direction has a tapered portion that tapers in the axial direction.   The connecting pin according to claim 1 or 2, wherein one or a plurality of notches extending in the axial direction at the end are provided at predetermined intervals in the circumferential direction. A connecting structure of a horizontal member in which an end portion of the horizontal member is connected to a metal fitting fixed to a structural member,
The connection pin according to any one of claims 1 to 3 is inserted through the connection hole provided in the connection fitting and the hole provided at the end of the cross member. Horizontal frame connection structure.   5. The connection structure of a cross member according to claim 4, wherein the cross member is a light H-section steel, and the hole is provided in the web of the light H portion steel.

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