JPH0747450Y2 - Joint fitting and joint structure of pillar and cross member using the joint fitting - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a connecting member and a connecting structure for a pillar and a cross member using the connecting member.

[0002]

2. Description of the Related Art Conventionally, a connecting fitting as shown in FIG. 5 or 6 is generally used for connecting a pillar and a cross member.
For example, in the case of the coupling fitting shown in FIG. 5, the rear half of the coupling shaft rod a is a tightening portion b, and the tightening portion b has a male screw c, a round washer d, and a male screw threaded on its surface. c is a female screw e that can be screwed into c, and the front half is provided with a locking piece attachment part g in which a split groove f is formed, and the locking piece h is a fulcrum at a position where its center of gravity is removed. Is rotatably mounted around the support shaft i, and a short portion of the locking piece h is inserted in the split groove f of the locking piece mounting portion g as shown by a broken line in FIG. A state in which it is accommodated and the whole is aligned with the axial direction of the locking piece attachment part g (a state in which the axis of the locking piece h and the axis of the locking piece attachment part g are aligned)
It is possible to straighten with
As shown in FIG. 5, at the joint portion of the column j made of channel steel and the horizontal member k made of the horizontal rail fitted therein, the locking piece h is inserted into the insertion hole s provided in the overlapping portion. Further, when the locking piece h is positioned in the hollow portion of the horizontal member k, the locking piece h is in a substantially upright state by its own weight with its long portion facing downward. Next, the coupling fitting is slightly pulled back to bring the locking piece h into contact with the inner side wall of the overlapping portion, and the male screw c and the female screw e.
Tighten with.

Further, in the case of the connecting fitting shown in FIG. 6, the structure of the engaging piece attaching portion and the engaging piece provided on the connecting shaft p is as follows.
This is different from the conventional fitting shown in FIG. That is, the locking piece n attached to the locking piece mounting portion m includes two locking plates o, o ′ sandwiching the locking piece mounting portion m and the locking plate o,
a connecting plate q installed between the upper edges of the front part and the rear part of o ',
q ′, and when the locking piece n is rotated around the support shaft i, the connecting plates q and q ′ come into contact with the upper edge or the lower edge of the locking piece attachment part m. As shown in the figure (b), the locking piece mounting part m and the locking piece n can be straightened with the axial direction of the locking piece n aligned with the axial direction of the locking piece mounting part m. Instead, it becomes a tilted state. For this reason, the hole diameter D of the insertion hole r provided in the overlapping portion needs to be large.

[0004]

However, in the case of the fitting shown in FIG. 5, the number of the engaging pieces h is one, and the thickness thereof is restricted by the width of the split groove f. The strength is relatively small, and there is a problem that a satisfactory bond strength cannot be obtained. Further, in the case of the fitting shown in FIG. 6, the locking piece n is composed of two locking plates o and o ′, and the thickness thereof can be increased, so that the pulling-out strength of the fitting is comparable. Although it can be made relatively large, the hole diameter D of the insertion hole r provided in the overlapping portion is inevitably large, and thus the strength of the overlapping portion itself is reduced.

The present invention solves the above-mentioned drawbacks of the prior art, and in the connecting metal fitting and the connecting structure of the column and the cross member using the connecting metal fitting, the pull-out strength of the connecting metal fitting and the overlapping portion itself are The purpose of the invention is to provide a material that does not adversely affect the strength.

[0006]

According to a first aspect of the present invention, a tightening portion is provided on the rear half of the coupling shaft and the front half serves as a locking piece mounting portion, and the tightening portion is provided on the surface thereof. The locking piece mounting portion is composed of a male screw threaded and a female thread threadable therewith, and two locking plates arranged side by side so as to sandwich the locking piece mounting portion and the respective locking members. A locking piece composed of a connecting plate laid between the upper and lower edges of the front and rear portions of the stop plate is rotatably attached with a position slightly deviated from the center of gravity of the locking piece as a fulcrum. The locking piece mounting portion is provided with an insertion groove into which the connecting plate can be inserted when the locking piece is rotated. According to a second aspect of the present invention, there is provided a connecting structure in which a pillar and a horizontal member are overlapped with each other, and an insertion hole for a fitting is provided in the overlapping portion. Is set, are bonded overlapping portions by inserting binding metal to the insertion hole, the fitting together with tightening portion is provided in the second half portion of the coupling axle,
The first half portion is used as a locking piece mounting portion, and the tightening portion is composed of a male screw threaded on the surface thereof and a female screw thread that can be screwed into the male thread. A locking piece composed of two locking plates arranged side by side so as to sandwich the part and a connecting plate laid between the upper and lower edges of the front and rear parts of each locking plate is the locking plate. It is attached rotatably with a position slightly off the center of gravity of one piece as a fulcrum.
An insertion groove is provided so that the connecting plate can be inserted when the locking piece is rotated, and the locking piece of the coupling fitting inserted in the insertion hole is rotated by its own weight to rotate the inner wall of the overlapping portion. The gist of the present invention is a joint structure of a column and a cross member, characterized in that the overlapping portion is tightened by the tightening portion in a state of being locked to.

In the invention according to claim 2, as the overlapping portion of the pillar and the cross member, in addition to the structure in which the pillar and the cross member are directly overlapped in the front-rear direction, the cross members are connected by a joint. , A structure in which the joint and the column are overlapped, and a structure in which a horizontal member is fitted in the hollow portion of a column member having a hollow portion inside as shown in FIGS. 5 and 6.

[0008]

According to the invention as set forth in claim 1, the coupling shaft is provided with a tightening portion on the rear half thereof, and the front half is used as a locking piece mounting portion, and the tightening portion is a male screw threaded on the surface thereof. And a female screw that can be screwed into the locking plate, and the locking piece mounting portion has two locking plates arranged side by side so as to sandwich the locking piece mounting portion, front portions of the locking plates, and A locking piece composed of a connecting plate provided between the upper edges or the lower edges of the rear part is rotatably attached with a position slightly deviated from the center of gravity of the locking piece as a fulcrum. Since the mounting portion is provided with an insertion groove into which the connecting plate can be inserted when the locking piece is rotated, the connecting plate of the locking piece is housed in the insertion groove of the locking piece mounting portion. It is possible to straighten the whole with its axial direction aligned with the axial direction of the locking piece attachment part, and to connect it to the overlapping part during construction. Diameter of the insertion hole for the tool mounting,
It may have a relatively small diameter.

According to a second aspect of the present invention, there is provided a connecting structure in which a pillar and a horizontal member are overlapped with each other, and an insertion hole of a coupling fitting is formed in the overlapping portion and is inserted into the insertion hole. The overlapping portion is connected by the connecting metal fitting, and the connecting metal fitting is provided with a tightening portion on the rear half of the connecting shaft, and the front half of the connecting metal fitting is the engaging piece mounting portion, and the tightening portion has its surface. A male screw threaded on the inner side of the male thread and a female thread threadable on the male thread, and the locking piece mounting portion includes two locking plates arranged side by side so as to sandwich the locking piece mounting portion. A locking piece consisting of a connecting plate laid between the upper and lower edges of the front and rear portions of the locking plate is rotatably attached with a position slightly deviated from the center of gravity of the locking piece as a fulcrum. The locking piece mounting part is provided with an insertion groove into which the connecting plate can be inserted when the locking piece is rotated. With the locking piece of the coupling metal fitting inserted through the insertion hole rotated by its own weight and locked to the inner wall of the overlapping portion, the pillar and the cross member with the overlapping portion tightened by the tightening portion Since the above is a combined structure, the diameter of the through hole for attaching the connecting metal fitting provided in the overlapping portion can be relatively small.

[0010]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a front view showing an embodiment of the invention according to claim 1, and is a view showing a part of a member in an exploded manner, and FIG. 2 is a view showing a part of the member removed in the same as above. Along with that, it is a view in which the other part is rotated, in which (a) is a front view thereof and (b) is a plan view thereof.
FIG. 3 is a view showing an embodiment of the invention according to claim 2 in which a pillar and a cross member are joined together by using the joining metal fitting according to claim 1, and FIG. It is a figure, the same figure (b)
FIG. 4 is a partially cutaway side cross-sectional view as seen in the direction of the arrow taken along the line Lo-Ro in FIG. 4A, and FIG. 4 is an enlarged cross-sectional view of the main part of FIG.

In FIG. 1 and FIG. 2, 1 is a connecting shaft which is the main body of the connecting fitting, the latter half of which is a tightening portion 2 having a male screw on the surface thereof, and 3 is The circular washers 4 used are also female screws. Reference numeral 5 denotes a locking piece mounting portion provided on the front half of the coupling shaft 1 (right side of the tightening portion 2 in the figure), and 6 and 6 ′ are arranged side by side so as to sandwich the locking piece mounting portion 5. The two locking plates 7, 7'provided are connecting plates installed between the upper edges of the front and rear portions of the locking plates 6, 6 ', and the front connecting plate 7'is The width of the rear connecting plate 7 is wider than that of the rear connecting plate 7. By doing so, more load is applied to the front portion, the rotation becomes smoother, and the insertion groove to be described later for inserting the connecting plate 7 in the rear portion can be made relatively narrow, so that the coupling It is preferable for maintaining the strength of the entire metal fitting.

Therefore, the locking plates 6 and 6'and the connecting plates 7 and 7'form a locking piece 8. Reference numeral 9 denotes a support shaft, and the locking piece 8 is rotatably attached to the support shaft 9 so as to be rotatable with its rear part as a fulcrum rather than its center of gravity. or,
An insertion groove 10 into which the rear connecting plate 7 of the locking piece 8 can be inserted is provided on the upper surface of the rear side of the locking piece mounting portion 5.

Next, a mode of use of the invention connecting fitting according to claim 1 above, that is, an embodiment of the invention according to claim 2 will be described with reference to FIGS. 3 and 4. In this embodiment, a protective fence used for a sidewalk along a roadway or a river will be described as an example. In FIG. 3, 11 is a pillar of a protection fence made of a thick round tube, and many pillars 11 are erected at regular intervals, but only one is shown in the drawing. Further, although the column 11 is an example of a column formed of a round tube in the present embodiment, it may be other square tube, H-shaped steel, elliptic tube or other solid body. Numerals 12 and 12 are horizontal members made of thin round tubes for protecting pedestrians. This crosspiece 1
In the present embodiment, 2 shows an example of a round tube, but similar to the pillar 11, other square tube, H-shaped steel, elliptic tube or other solid body may be used. The cross member 12 is installed between the columns 11 as shown in FIG. 3A, but the cross member 12 is fixed to the column 11 via a mounting metal fitting (joint) 13 so that With the material 12, the end portions of the transverse members 12 that are adjacent to each other are fixed at a predetermined interval. That is, the fitting 13 is composed of a pair of semi-cylindrical fittings 14 and 15 and a support portion 16 that is integrated with the fitting 15, and the insertion hole 18 for mounting the fitting 17 is provided in the pillar 1.
1 and the metal fitting 15 of the mounting metal fitting 13 and the support portion 16 are provided so as to penetrate therethrough. Incidentally, 19 is a washer having an arcuate peripheral surface.

In order to connect the cross member 12 to the above-mentioned pillar 11 through the mounting metal fitting 13, first, the through holes 18 of the pillar 11 and the mounting metal fitting 13 are aligned with each other, and then the metal fitting 15 and the support portion 16 are arranged. Are coupled using the coupling fitting 17. At this time,
The locking piece 8 of the coupling fitting 17 is rotated to insert the rear connecting plate 7 into the insertion hole 10 (a state as shown in FIG. 1), and the locking piece attachment portion 5 and the locking piece 8 are straightened. Then, it is inserted through the insertion hole 18. When the locking piece 8 completely passes through the insertion hole 18, the locking piece 8 is rotated by its own weight to be in a substantially vertical state (state shown in FIGS. 2 and 3). In this way, when the locking piece 8 is bent, it is no longer possible to pull out the coupling fitting 17. Next, the washer 19 and the round washer 3 are inserted into the male screw of the tightening portion 2, and the female screw 4 is inserted through these washers.
The column 11, the metal fitting 15, and the support portion 16 are screwed together and tightened.
Are connected by the connecting metal fitting 17.

Next, each end portion of the cross members 12, 12 is applied to the metal fitting 15, and the metal fitting 14 is capped after the positioning with the mounting holes previously drilled, and is shown in FIG. As described above, the mounting bolt 13 is used to assemble the mounting member 13 and the horizontal members 12, 12 are simultaneously mounted on the mounting member 13. Since the head of the mounting bolt 20 is located on the upper side and the head is built in the mounting bracket 13, it is aesthetically pleasing and safe for pedestrians.

Next, FIG. 7 shows the measured values of the tensile load curve (indicative of pull-out strength) of the inventive coupling fitting according to claim 1 shown in FIG. 1 and FIG. The graph is shown in contrast with that of the conventional product shown in. In the figure, the conventional product A is shown in FIG. 5, and the conventional product B is shown in FIG. It can be understood from FIG. 7 that the fitting of the present invention according to claim 1 is very reliable in terms of strength.

[0017]

According to the first aspect of the present invention, the tightening portion is provided on the rear half of the connecting shaft, and the front half is the engaging piece mounting portion, and the tightening portion is screwed on the surface thereof. The locking piece mounting portion is composed of a male screw and a female screw that can be screwed into the male screw, and two locking plates arranged side by side so as to sandwich the locking piece mounting portion and the front of each locking plate. A locking piece composed of a connecting plate provided between the upper portion and the lower edge of the rear portion and the rear portion is rotatably attached with a position slightly deviated from the center of gravity of the locking piece as a fulcrum. Since the stop piece mounting part has an insertion groove into which the connecting plate can be inserted when the locking piece is rotated, the connecting plate of the locking piece is accommodated in the insertion groove of the locking piece mounting part. However, it is possible to straighten the whole with its axial direction aligned with the axial direction of the locking piece attachment part, and it is provided in the overlapping part during construction. Diameter of the insertion hole for fitting the attachment may be relatively small diameter.

Therefore, the connecting portion between the column and the cross member can obtain a sufficient mechanical strength, the allowable range of the strength at the time of design and construction is widened, and by extension, the building structure using this special connecting metal fitting. The adoption range for

According to a second aspect of the present invention, there is provided a connecting structure in which a pillar and a horizontal member are overlapped with each other, and an insertion hole for a fitting is inserted through the overlapping portion and inserted into the insertion hole. The overlapping portion is connected by the connecting metal fitting, and the connecting metal fitting is provided with a tightening portion on the rear half of the connecting shaft, and the front half of the connecting metal fitting is the engaging piece mounting portion, and the tightening portion has its surface. A male screw threaded on the inner side of the male thread and a female thread threadable on the male thread, and the locking piece mounting portion includes two locking plates arranged side by side so as to sandwich the locking piece mounting portion. A locking piece consisting of a connecting plate laid between the upper and lower edges of the front and rear portions of the locking plate is rotatably attached with a position slightly deviated from the center of gravity of the locking piece as a fulcrum. The locking piece mounting part is provided with an insertion groove into which the connecting plate can be inserted when the locking piece is rotated. With the locking piece of the coupling metal fitting inserted through the insertion hole rotated by its own weight and locked to the inner wall of the overlapping portion, the pillar and the cross member with the overlapping portion tightened by the tightening portion Since it is a combined structure formed by overlapping, it is possible to use a relatively small hole diameter of the insertion hole for attaching the connecting metal fitting provided in the overlapping portion. Therefore, the same effect as the device according to the first aspect is obtained.

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of the invention according to claim 1, and is a view showing a part of a member in an exploded manner.

FIG. 2 is a view showing a part of the member is removed and the other part is rotated in the same as above, FIG. 2A is a front view thereof, and FIG. 2B is a plan view thereof. It is a figure.

FIG. 3 is a diagram showing an embodiment of the invention described in claim 2 in which a pillar and a cross member are coupled using the coupling fitting according to claim 1, wherein FIG. It is a front view of a notch, and the same figure (b) is a partially cutaway side cross-sectional view taken in the direction of the arrow taken along the line Loro of FIG.

FIG. 4 is an enlarged cross-sectional view of a main part of FIG.

5A and 5B are views showing an example of a conventional connecting fitting and an example of a connecting structure of a pillar and a cross member when the connecting fitting is used, wherein FIG. 5A is a plan view thereof, and FIG. Is a front view thereof, and FIG. 7C is a cross-sectional view of a main part showing an example of a coupling structure of a column and a cross member, which is an embodiment thereof.

FIG. 6 is a view showing another example of a conventional coupling fitting and an example of a joining structure of a pillar and a cross member when the fitting is used, in which FIG. (B) is a front view thereof, and (c) of the same figure is a cross-sectional view of a main part showing an example of a coupling structure of a column and a cross member, which is an embodiment thereof.

FIG. 7 is a graph showing the measured values of the tensile load curve of the device according to claim 1 shown in FIGS. 1 and 2, in comparison with those of the conventional product shown in FIGS. 5 and 6.

[Explanation of symbols]

 2 Tightening part 5 Locking piece mounting part 6, 6'Locking plate 7, 7'Connecting plate 8 Locking piece 9 Support shaft 10 Insertion groove 11 Pillar 12 Horizontal member 13 Mounting bracket 17 Coupling bracket 18 Inserting hole 20 Mounting bolt

Claims (2)

[Scope of utility model registration request] 1. A coupling shaft is provided with a tightening portion on a rear half thereof, and the front half is a locking piece mounting portion, and the tightening portion can be screwed to a male screw threaded on the surface thereof. A female screw, and the locking piece mounting portion has two locking plates arranged side by side so as to sandwich the locking piece mounting portion, and between the upper edges of front and rear portions of each locking plate or A locking piece composed of a connecting plate laid between lower edges is rotatably attached with a position slightly deviated from the center of gravity of the locking piece as a fulcrum. A coupling fitting, wherein an insertion groove into which the connecting plate can be inserted when the stop piece is rotated is provided. 2. A connecting structure in which a pillar and a horizontal member are overlapped with each other, and an insertion hole for a fitting is penetrated through the overlapping portion, and the fitting is inserted through the insertion hole. The coupling metal fitting is provided with a tightening portion on the rear half of the coupling shaft, and the front half is a locking piece mounting portion, and the tightening portion is a male member screwed on the surface thereof. The locking piece mounting portion is composed of a screw and a female screw that can be screwed into the screw, and the locking piece mounting portion is provided with two locking plates arranged in parallel so as to sandwich the locking piece mounting portion and front portions of the locking plates. A locking piece composed of a connecting plate that is installed between the upper edge and the lower edge of the rear part is rotatably attached with a position slightly deviated from the center of gravity of the locking piece as a fulcrum. The piece mounting portion is provided with an insertion groove into which the connecting plate can be inserted when the locking piece is rotated. In the state where the locking piece of the fitting is rotated by its own weight and locked to the inner wall of the overlapping portion, the overlapping portion is tightened by the tightening portion. Bond structure.