JPH04111832A - Joint structure of member - Google Patents

Abstract

PURPOSE:To securely and easily position nuts, by fixing with screws the middle square part of a nut holder having a couple of fasteners holding each nut not to rotate at the square part between a couple of connecting pieces of the first member by use of bolts. CONSTITUTION:After nuts 15 are held respectively in each holder 32, 32 of nut holders 31, bolts 25 are inserted in bolt-insertion holes 33 and screwed in screw holes 21. In this time, when the bolts 25 are screwed into the screw holes 21, the nut holders 31 are restricted not to rotate by adjacent connecting pieces 2 of a connection box 3 to position at the corners of the connection box 3. In this way, the nut holders 31 or the nuts 15 can be securely and easily positioned at the specified place in the connection box 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a joining structure for members. For example, it relates to a joint structure for joining pillars and beams that are structural members for construction.

[Background technology]

For example, a joining structure for joining pillars and beams, which are structural members for construction, is shown in FIGS. 4 and 5. Note that these figures are examples of connecting four beams to a column, but in Figure 4, only two of the four beams are shown, and the other two
I have omitted the book.

In these figures, the ends of a pair of upper and lower pillars 1, 1, which serve as first members to be joined to each other, have four engaging pieces 2 each having a square cylindrical shape and whose outer surface is a friction joint surface. Junction boxes 3, 3 are each welded. Each joint piece 2 of each joint box 3, 3 has four bolt insertion holes 4.
and two bolt insertion holes 5 are formed respectively.

For joining, first, a tap plate 7 having eight tap holes 6 on the inner surface is placed between each joining piece 2 of the lower joining box 3, and a beam 8 as a second member is placed on the outside, that is, the friction joining surface. , 8 are respectively positioned, and both are temporarily attached using bolts IO. In addition, each end plate 9, 9 has two bolt insertion holes 11 formed at its upper and lower positions, and these upper and lower bolt insertion holes 1.
1, eight bolt insertion holes 12 are formed between them.

Next, connect the upper junction box 3 to the lower junction box 3.
After abutting against each other, a bolt 13 is inserted through the bolt insertion hole 12 of the end plate 9°9, and the bolt 13 is screwed into the tap hole 6 of the tap plate 7 through the bolt insertion hole 4 of the joint box 3, 3. .

Also, insert the bolt 14 through the bolt insertion hole 11 of the end plates 9, 9, and insert the bolt 14 into the joint box 3,
3 through the bolt insertion holes 5, 5 in each joint box 3 in advance.
, 3 is screwed into a nut 15 located on the inner surface side of each joint piece 2. Thereby, the joining boxes 3, 3 and each end plate 99, that is, the pillars 1, 1 and the casings 8, 8 are frictionally joined.

At this time, the inside of the junction boxes 3 and 3 is closed, so
It is necessary to hold the nut 15 in a predetermined position within the joint boxes 3, 3 in advance by the holding means 16.

Conventionally, as a holding means 16 for holding the nut 15 at a predetermined position within the joint boxes 3, 3, a threaded hole 21 is provided at an intermediate position of each joint piece 2 of the joint boxes 3, 3, as shown in FIG. The bolt 2 is inserted through the screw hole 21 through the center hole 24 of a spectacle-shaped nut holder 23 having holding grooves 22 for holding the nut 15 on both end sides.
5 is screwed together, the nut holder 23, that is, the nut 15 is held in a predetermined position. In addition,
26 is a spacer.

[Problem to be solved by the invention]

In the structure of the conventional holding means 16 described above, when the bolt 25 is screwed into the screw hole 21 and the nut holder 23 is tightened, the nut holder 23 rotates around the bolt 25, so that the nut 15 is not held in a predetermined position. difficult to position.

In addition, since the screw hole 21 must be bored at an intermediate position between each joining piece 2 of the joining boxes 3, 3, that is, at an intermediate position between the friction joining surfaces of the end plates 9, 9, the friction joining surfaces may be damaged. There is a problem in that it is unfavorable during friction welding.

SUMMARY OF THE INVENTION An object of the present invention is to solve these conventional problems and provide a joint structure that allows nut positioning to be performed accurately and easily, and that does not damage the friction joint surfaces of members. It is about providing.

[Means to solve the problem]

Therefore, the joining structure of members of the present invention includes a first member having a pair of joining pieces that form a predetermined angle with each other and whose outer surfaces are friction joining surfaces, and a first member that is joined to each friction joining surface of the first member. a pair of second members, a bolt inserted from each second member side with each second member and each frictional joint surface of the first member in contact with each other; A member comprising a tightening means that is located on the inner surface of each joining piece of the first member and that is threadedly engaged with each of the bolts, and tightens the first member and each second member to frictionally join the two members. In the joint structure, a pair of nuts are formed at both ends at a predetermined angle so as to match the shape of the inner surface of the pair of joint pieces of the first member, and each nut is held unrotatably on the both end sides thereof. A nut holder characterized in that it is provided with a nut holder having a holding part, and a bolt that screws and fixes an intermediate corner of the nut holder to a corner between a pair of joint pieces of the first member. After each nut is held by the pair of holding parts, the middle corner of the nut holder is fixed to the corner between the pair of joint pieces of the first member with a bolt. At this time, as the bolt is tightened, the nut holder conforms to the inner surface shape of the pair of joint pieces of the first member and rotation is restricted.
The nut holder can be accurately and easily positioned at the corner between the pair of joint pieces. In other words, the nut can be accurately and easily positioned at a predetermined position.

Further, since the position where the bolt is screwed together is the corner between the pair of joint pieces of the first member, the friction joint surface will not be damaged.

〔Example〕

Hereinafter, one embodiment of the present invention will be described based on FIGS. 1 to 3. In the description of these figures, the same components as in FIGS. 4 to 6 described above are designated by the same reference numerals, and the description thereof will be omitted.

In this embodiment, the screw holes 21 are bored at the corners of the joint box 3, that is, at the corners between adjacent joint pieces 2.

An intermediate corner portion of a nut holder 31 is attached to the screw hole 21 via the bolt 25. Nut holder 3
1 is formed into an L-shape with both ends forming an angle of 90 degrees so as to match the inner surface shape of the adjacent joint piece 2 of the joint box 3, as shown in detail in FIGS. 2 and 3. , holding portions 32 and 32 for holding the nut 15 unrotatably are formed at both ends thereof, and a bolt insertion hole 33 for the bolt 25 is formed at an intermediate corner thereof. Note that 34 is an escape hole formed in each of the holding parts 32.

Therefore, after the nut 15 is held in each of the holding parts 32, 32 of the nut holder 31, the bolt 25 is inserted into the bolt insertion hole 33, and the bolt 25 is screwed into the screw hole 21. At this time, when the bolt 25 is screwed into the screw hole 21, the nut holder 31 is positioned at the corner of the joint box 3 while its rotation is restricted by the adjacent joint pieces 2 of the joint box 3. Therefore, the nut holder 31°, that is, the nut 15, can be accurately and easily positioned at a predetermined position within the joint box 3.

In this state, if the pole h14 is inserted through the bolt insertion hole II of the end plates 9, 9 and the bolt 14 is screwed into the nut 15 held in the nut holder 31, the beams 8, 8 will be frictionally moved against the column l. Can be joined.

Therefore, according to this embodiment, the screw holes 21 are provided at the corners of the joint box 3, and both ends are 9.
The middle corner of the nut holder 31 is formed into a 0 degree L-shape and has a pair of holding parts 32 and 32 on both ends of which hold the nut 15 unrotatably, into the screw hole 21 of the joining box 31. Since the nut 15 is fixed via the bolt 25, the nut 15 can be accurately and easily positioned at a predetermined position within the joint box 3.

In other words, after holding the nut 15 in each of the holding parts 32, 32 of the nut holder 31, inserting the bolt 25 into the bolt insertion hole 33 and screwing the bolt 25 into the screw hole 21, the nut holder 31 is joined. The joint box 3 is rotated while being restricted by the adjacent joint piece 2 of the box 3.
The nut holder 31, that is, the nut 15, can be accurately and easily positioned at a predetermined position within the junction box 3.

Moreover, since the screw holes 21 into which the bolts 25 are screwed are formed at the corners of the joint box 3, that is, they are offset from the friction joint surface on the outer surface of the joint piece 2, so that the friction joint surface will not be damaged. .

In the above embodiment, a rectangular cylindrical joint box 3 having four joint pieces 2 is welded to the column 1, and the outer friction joint surface of each joint piece 2 of this joint box 3 is attached to the end of the beam 8. Although the welded end plates 9 are frictionally joined, the column 1 may be provided with at least a pair of adjacent joining pieces 2. That is, the joining piece 2 may be L-shaped. In this case, the angle formed by the pair of joining pieces 2 is not limited to 90 degrees as in the above embodiment, but may be any angle as long as a corner can be formed.

Further, in the above embodiment, the joint box 3 is welded to the end of the column 1, and the end plate 9 is welded to the end of the beam 8, so that the two are joined. may be directly friction bonded.

Furthermore, the present invention is not limited to the joint structure between pillars and beams, which are structural members for construction, as described in the above embodiments, but can be applied to general joint structures in which members are frictionally joined together.

〔Effect of the invention〕

As described above, according to the present invention, it is possible to provide a joining structure for members in which nut positioning is easy and the frictional joining surfaces of the members are not damaged.

[Brief explanation of the drawing]

Figures 1 to 3 show one embodiment of the present invention.
2 is a sectional view of the nut holder, and FIG. 3 is a view taken from the direction of arrow I11 in FIG. 2. FIG. 4 is an exploded perspective view showing a joint structure for joining columns and beams. 5 and 6 show the conventional joining structure, FIG. 5 is a sectional view showing the joining state, and FIG.
The figure is an exploded perspective view showing the nut holder. 1... Pillar (first member), 2... Joint piece, 8...
Bolt (second member), 14... Bolt, 15... Nut, 25... Bolt, 31... Nut holder, 32
...Holding part.

Claims (1)

[Claims] (1) A first member having a pair of joint pieces that form a predetermined angle with each other and whose outer surfaces are friction joint surfaces, and a pair of second members that are respectively joined to each friction joint surface of the first member. and a bolt inserted from each second member side with each of the second members and each frictional joint surface of the first member in contact with each other, and an inner surface of each joint piece of the first member. A member joining structure comprising a tightening means having a nut located on the side and screwed into each of the bolts, and tightening the first member and each second member to frictionally join the two members. a nut holder having both ends formed at a predetermined angle to match the inner surface shape of the pair of joint pieces of the member, and having a pair of holding portions on both end sides thereof for holding each nut unrotatably; A member joining structure characterized in that a bolt is provided for screwing and fixing an intermediate corner of the nut holder to a corner between a pair of joining pieces of the first member.