JP2016065409A - Connection structure of two members and partition device having the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a connection structure of two members and a partition device having the same, easy in assembly work, with a simple structure, by reducing risk of falling off a bolt from a plate material, in assembling time and after assembling.SOLUTION: A noncircular part 8b is provided between a male screw part 8a of a bolt 8 and a large diameter head part 8c, and a column 2 is bored with a deformed tumbler-shaped hole 10 of continuously providing a noncircular small hole 12 under a noncircular large hole 11 of setting the length of the major axis larger than a diameter of the large diameter head part 8c of the bolt 8 and also setting the length of the minor axis smaller than the diameter of the large diameter head part 8c of the bolt 8 but formed in a dimension of an insertable degree when setting the large diameter head part 8c of the bolt 8 oblique, and the noncircular part 8b of the bolt 8 is fitted to the noncircular small hole 12 and an engaging hole 23 provided in a partition member 3, and the column 2 and the partition member 3 are connected by fastening a nut 9 threadedly engaged with the male screw part 8a of the bolt 8.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a two-member connection structure and a partition device including the connection structure.

  As a connecting structure of two members, for example, a saddle hole (bolt hole 10) is provided in one plate material (flat steel 1), and an engagement hole (elliptical mounting hole 6) is provided in the other plate material (auxiliary flat steel 4). Provide a non-circular part (elliptical part 8b) between the male screw part (screw part 8a) and the large-diameter head part (bolt head part 8c) in the bolt (8). Is inserted into the large-diameter portion, the bolt is lowered, and the non-circular portion is fitted into the elliptical portion of the dart hole so that the bolt can be attached to one plate material from the front side (for example, (See Patent Document 1).

  Moreover, as a partition device such as a safety fence for preventing a person from entering a dangerous place, for example, both sides of a grid-like partition element between a pair of support columns standing on the floor or the ground There is one that locks the upper and lower edges (see, for example, Patent Documents 2 and 3).

Japanese Utility Model Laid-Open No. 5-29237 (especially FIGS. 2 and 5 and paragraph 0011) Japanese Patent No. 4511347 US Pat. No. 5,372,354

  In what is described in Patent Document 1, the large-diameter head of the bolt can be inserted through the large-diameter portion of the harpoon hole (bolt hole 10) in which different-diameter holes are continuously provided (paragraph 0011 in Patent Document 1). Description) Since it is a perfect circle (described in FIG. 2D in Patent Document 1), when the bolt is lifted for some reason such as vibration, the large-diameter head of the bolt is removed from the large-diameter portion of the saddle hole. The bolt may come off and fall off from one plate (flat steel 1).

  Further, the safety fences described in Patent Documents 2 and 3 include a locking structure and a mounting structure on the upper and lower sides of a partition element to a support column, a locking means (locking means 12 in Patent Document 2), and an end cap. The advancing / retreating mechanism (the end caps 46 to 49, the compression springs 71 to 74 and FIG. 7 in Patent Document 3) is complicated, and there are problems such as complicated installation work.

  The present invention has been made in view of the above-described problems of the prior art. The bolts are less likely to drop off the plate material during and after assembly, and the structure is simple and the assembly work is easy. It is an object of the present invention to provide a two-member connecting structure and a partition device including the same.

According to the present invention, the above problem is solved as follows.
(1) In the two-member connection structure, at least a part of the width between the male screw part and the large-diameter head part having a diameter larger than the diameter is larger than the diameter of the male screw part, and at least a part. The bolt provided with a non-circular portion whose width is smaller than the diameter of the large-diameter head, and the length of the long axis is larger than the diameter of the large-diameter head of the bolt and the length of the short axis A non-circular large hole whose size is smaller than the diameter of the large-diameter head of the bolt, but is large enough to be inserted if the large-diameter head of the bolt is inclined, and the non-circular large hole A first plate member provided with a deformed round hole provided with a non-circular small hole that is connected to a part of a peripheral edge and that prevents the bolt from rotating when the non-circular portion of the bolt is fitted. A second plate member having an engagement hole into which a non-circular portion of the bolt can be fitted, and a male screw portion of the bolt The non-circular portion of the bolt is fitted into a non-circular small hole of the deformed saddle hole in the first plate member, and the nut screwed into the male screw portion of the bolt is tightened. The first plate member and the second plate member are fastened between the large-diameter head of the bolt and the nut.

According to such a configuration, after assembling, the large diameter head of the bolt is inserted into the non-circular large hole of the deformed harpoon provided in the first plate material at an angle. In a normal posture in which the central axis of the bolt is oriented in a direction perpendicular to the first plate material, the portion does not come out of the non-circular large hole of the deformed sag hole, and the bolt is removed from the plate material during and after assembly. It can be prevented from falling off.
In addition, when the non-circular portion of the bolt is fitted into the non-circular small hole of the deformed daruma hole in the first plate member, the bolt is prevented from rotating, so when tightening the nut screwed into the male screw portion of the bolt, Even if it is not held down with one hand, the bolt does not rotate with the nut, the nut can be tightened easily, and the assembly workability can be improved.
Furthermore, it is not necessary to add a special member or perform a special process only by changing the shape of the conventional daruma hole, and the structure can be simplified.

(2) In the above item (1), the non-circular portion of the bolt has a square shape, and the non-circular small hole of the deformed saddle hole complements the quadrangular shape of the non-circular portion of the bolt, and the one diagonal line is a deformed round hole. A non-circular large hole having a long axis or a short axis that coincides with an extended line of the non-circular large hole, and the width of the connecting portion between the non-circular large hole and the non-circular small hole in the deformed dull hole is set to a male thread portion of the bolt Larger than the diameter of.

  According to such a configuration, when the non-circular portion of the bolt is fitted into the non-circular small hole of the deformed darling hole in the first plate member, the non-circular portion of the bolt is formed at the three corners of the non-circular small hole. Thus, the bolt can be strongly prevented from rotating, and the shape of the deformed darby hole can be made excellent in design.

(3) In the above item (1) or (2), the non-circular large hole of the modified daruma hole is elliptical or oval.

  According to such a configuration, the large diameter head of the bolt can be inserted smoothly into the non-circular large hole of the deformed saddle hole provided in the first plate member in an inclined state. If the long axis of the non-circular large hole is oriented in the longitudinal direction of the support column, the present invention can be applied even when a narrow support column is used as the first plate member, and versatility is increased.

(4) In any of the above items (1) to (3), when the non-circular portion of the bolt is fitted into the engagement hole in the second plate material, the bolt is prevented from rotating with respect to the second plate material. And the non-circular portion of the bolt is fitted into both the non-circular small hole of the deformed sill hole in the first plate member and the engagement hole in the second plate member, and the male screw of the bolt Tighten the nut to be screwed into the part.

  According to such a configuration, the first plate member and the second plate member are fastened by the nut in a state in which the first plate member and the second plate member are prevented from rotating together via the non-circular portion of the bolt. It becomes.

(5) In a partitioning device in which a partition member having side frames on at least both sides is installed between a pair of columns erected on a floor surface or the like, the respective columns and the side frames of the partition members are opposed to each other. The portion is formed of a plate material, and the upper and lower portions of both plate materials are connected with the two-member connection structure described in any one of (1) to (4) above.

  According to such a configuration, it is possible to simplify the mounting structure of the upper and lower portions of each side frame in the partition member with respect to the support column, and to improve the assembling workability.

(6) In the above item (5), the upper and lower portions of the side frame in the partition member are provided in the upper and lower portions of the support so that the deformed saddle holes are provided so that the non-circular small holes face downward. Either one of the engagement hole and an introduction port that opens obliquely downward from the engagement hole toward the edge of the side frame is provided, and either the upper part or the lower part of the side frame in the partition member is provided. On the other hand, an engagement hole and an introduction port that opens horizontally from the engagement hole toward the edge of the side frame are provided, and the width of the both introduction ports is larger than the diameter of the male screw portion of the bolt, and It is the same or smaller than the minimum width of the non-circular portion of the bolt.

According to such a configuration, in the state where the nut is loosely screwed to the tip of the male threaded portion of the bolt, the central axis of the bolt is inclined obliquely in the minor axis direction of the non-circular large hole, and the large diameter of the bolt By inserting the head into the non-circular large hole of the deformed darling hole from an oblique direction, the bolts are not dropped into the deformed darling hole in the non-circular large hole of the deformed darling hole in the upper and lower parts of each column. Can be temporarily fixed.
In this state, after engaging the engagement holes on the side frames of the partitioning member that open obliquely downward with the corresponding bolts, the inlets on the side frame of the partitioning member open horizontally. Engage one of the engagement holes with the corresponding bolt, pull this bolt inward between the two struts, and fit the non-circular portion of the bolt into the non-circular small hole of the corresponding deformed dharma hole. By tightening the nut, the part of the side frame where the introduction hole that opens horizontally is fixed to the support first, and then the side frame is opened obliquely downward. The partition device can be assembled easily and quickly by fixing the portion having the joint hole to the support in the same manner as described above.
In particular, when the bolt is temporarily fixed to the deformation darling hole, there is an advantage that the bolt does not fall off from the deformation darling hole and that the bolt does not rotate with the nut when tightening the nut. is there.

  According to the present invention, it is possible to provide a two-member connecting structure that is less likely to drop a bolt from a plate material at the time of assembly and after assembly, has a simple structure, and is easy to assemble, and a partition device including the same. it can.

It is a perspective view of one embodiment of a partition device provided with the connection structure of two members of the present invention. Similarly, it is an exploded perspective view. It is a disassembled perspective view of the volt | bolt and nut which are used for the connection structure of 2 members of this invention. FIG. 4 is an enlarged arrow view seen from line IV-IV in FIG. 2. It is a cross-sectional top view which shows the condition at the time of insertion of the volt | bolt to a deformation | transformation daruma hole, and crosses in the VV line | wire of FIG. It is an enlarged vertical front view in the VI-VI line of FIG. It is a vertical side view which shows a state when attaching a partition member to a support | pillar. It is a vertical side view similar to FIG. 7, showing a state when the partition member in the modification of the partition device of the present invention is attached to the support column.

Hereinafter, an embodiment of a partition device having a two-member connection structure of the present invention will be described with reference to FIGS.
As shown in FIGS. 1 and 2, this partitioning device is used as a safety fence to prevent people from entering dangerous places, and may be on the floor (the ground, etc.) These are collectively referred to as a floor surface or the like) and are provided with a plurality of support columns 2 and 2, and a partition member 3 installed between them. For the sake of simplicity, the drawing shows only a pair of left and right support columns 2 and 2 and one partition member 3 installed between them. A plurality of support columns 2 are erected on the same side, and a partition member 3 is installed between those adjacent to each other.

  As shown in FIG. 2, each support column 2 has a rectangular tube shape, and at its lower end, an upward protrusion formed by bending an intermediate portion of the anchor plate 4 facing in the front-rear direction upward in a U-shape in a side view. The part 4a is fitted and fixed with bolts 5, 5 and nuts 5a, 5a.

By fixing the front and rear portions of the anchor plate 4 to the floor surface 1 with anchor bolts 6, the support column 2 is erected stably on the floor surface 1.
The support 2 may be supported on the floor 1 in any manner, and the lower end of the support 2 may simply be placed on the floor 1.

  An end cap 7 is press-fitted to the upper end of each column 2 so as to be detachable.

FIG. 3 shows an example of a bolt 8 and a nut 9 used in the two-member connecting structure of the present invention.
The bolt 8 includes a male screw portion 8a, a non-circular portion 8b provided continuously with one end of the male screw portion 8a, and a large-diameter head portion 8c provided continuously with the end of the non-circular portion 8b opposite to the male screw portion 8a. It is made up of.

In this example, the non-circular portion 8b has a vertical and horizontal dimension equal to or larger than the diameter L1 of the male screw portion 8a, a diagonal length larger than the diameter L1 of the male screw portion 8a, and the large-diameter head 8c. The cube is the same as or smaller than the diameter L2.
The non-circular portion 8b may have any shape as long as at least a portion of the width is larger than the diameter L1 of the male screw portion 8a and at least a portion of the width is smaller than the diameter L2 of the large-diameter head portion 8c. For example, it can be oval, oval, rectangular, hexagonal, etc.

  The length of the non-circular portion 8b in the axial direction is larger than the thickness of the column 2 serving as the first plate, and the plate thickness of the column 2 and the outer piece 14a of the side frame 14 described later serving as the second plate. It is preferable to be equal to or smaller than the sum of the plate thicknesses.

  The nut 9 is screwed into the male threaded portion 8a of the bolt 8, and in this example, it is a hexagonal nut with a flange 9a.

As shown in FIG. 2 and FIG. 5, a deformed harpoon hole 10 is provided in the upper and lower portions of the front surface, rear surface, and both side surfaces of each support column 2.
In addition, the modified daruma hole 10 may be provided only on one surface of the front surface, the rear surface, and both side surfaces of the support column 2, or only on 2 surfaces or 3 surfaces, and further provided on only one of the upper and lower portions of the support column 2. Sometimes.

  As shown in FIG. 4, the deformed daruma hole 10 has a length of the long shaft 11a facing in the vertical direction larger than the diameter L2 of the large-diameter head portion 8c of the bolt 8, and a length of the short shaft 11b in the horizontal direction. The non-circular large hole 11 is smaller than the diameter L2 of the large-diameter head portion 8c of FIG. 8, but is sized so that it can be inserted when the large-diameter head portion 8c of the bolt 8 is inclined as shown in FIG. And a part of the peripheral edge of the non-circular large hole 11, in the example shown in the figure, is connected to the center of the lower end of the non-circular large hole 11, and substantially complements the outer shape of the non-circular part 8 b of the bolt 8. By combining, the non-circular small hole 12 is configured such that the bolt 8 is prevented from rotating.

  The non-circular large hole 11 is elliptical in this example, but may be oval or other non-circular.

Further, in this example, the non-circular small hole 12 is complementary to the quadrangle that is the outer shape of the non-circular portion 8b of the bolt 8, and below the major axis 11a of the non-circular large hole 11 of the round hole 10 whose diagonal is deformed. However, it may be a rectangle that hangs down from the center of the lower end of the non-circular large hole 11 or another non-circular shape.
However, when the non-circular small hole 12 has the shape shown in FIG. 4, the three corners of the non-circular small hole 12 can be engaged with the three corners of the non-circular part 8 b of the bolt 8. Therefore, the bolt 8 can be strongly prevented from rotating.

  The width W1 of the connecting portion 13 between the non-circular large hole 11 and the non-circular small hole 12 in the deformed daruma hole 10 is larger than the diameter L1 of the male screw portion 8a of the bolt 8, and the diameter of the large-diameter head portion 8c of the bolt 8. It is smaller than L2 so that at least the male threaded portion 8a of the bolt 8 can freely move from the non-circular large hole 11 to the non-circular small hole 12 in the deformed harpoon hole 10 and vice versa. is there.

  As shown in FIGS. 1 and 2, the partition member 3 includes a pair of left and right side frames 14 and 14 formed of an angle member, an upper frame 15 and a lower frame 16 also formed of an angle member, The frame 18 is formed by fixing the intermediate portions in the vertical direction of the side frames 14, 14 to each other with an intermediate connecting member 17 made of a channel material, and the rear surface of the frame 18. It consists of a fixed grid 19.

The lattice 19 includes a rectangular edge member 20 in which a plurality of vertical rods 21 and horizontal rods 22 made of steel bars are incorporated in a lattice shape.
Note that a net or a panel (both not shown) may be used instead of the lattice 19.

  In the lower part of the outer piece 14a facing the front-rear direction in the left and right side frames 14, an engagement hole 23 into which the non-circular portion 8b of the bolt 8 can be fitted, and from the engagement hole 23 to the front edge of the outer piece 14a. An introduction port 24 that opens obliquely downward is provided continuously.

  In the illustrated example, the engagement hole 23 has a quadrangle that partially complements the outer shape of the non-circular portion 8b of the bolt 8, or has a slightly larger dimension, and has two opposing sides. However, it is in a shape that continues to both edges of the inlet 24 as it is.

  At the upper part of the outer piece 14a, there are an engagement hole 25 into which the non-circular portion 8b of the bolt 8 can be fitted, and an introduction port 26 that opens horizontally from the engagement hole 25 toward the front edge of the outer piece 14a. , Provided continuously.

In the illustrated example, the engagement hole 25 has a quadrangle that is partially complementary to the outer shape of the non-circular portion 8b of the bolt 8 or slightly larger in size, and one diagonal line of the quadrangle is formed. The shape is continuous with the horizontal center line of the inlet 26.
The vertical width of the inlet 26 is preferably larger than the diameter L1 of the male threaded portion of the bolt 8 and equal to or smaller than the length of one side of the quadrangle that is the outer shape of the non-circular portion 8b of the bolt 8. .

Next, the attachment procedure of the partition member 3 to the left and right support columns 2 and 2 erected on the floor surface 1 will be described.
In the state where the nut 9 is loosely screwed to the tip of the male threaded portion 8a of the bolt 8, the central axis of the bolt 8 is set to the short axis 11b of the non-circular large hole 11 in the deformed hole 10 as shown in FIG. After inserting the large-diameter head 8c of the bolt 8 into the non-circular large hole 11 of the deformed dart hole 10 from an oblique direction, the direction of the bolt 8 and the surface of the column 2 are Next, the bolt 8 is slightly lowered so that the male threaded portion 8a of the bolt 8 passes through the connecting portion 13 in the deformed saddle hole 10 so that the bolt 8 and the nut 9 are moved to the left and right. Male threaded portions 8a in which nuts 9 are screwed into the tip portions of the respective deformed darby holes 10 at the upper and lower portions of the opposing surfaces of the support columns 2 and 2 project inward from the opposing surfaces of the support columns 2 and 2, respectively. And temporarily stop without falling off Ku.

  With respect to the bolts 8, 8 engaged with the deformed saddle hole 10 at the lower part of the left and right columns 2, 2, the male screw portions 8 a, 8 a are further drawn inwardly between the columns 2, 2 from the above state. The non-circular portions 8b, 8b of 8, 8 are fitted into the non-circular small holes 12 of the corresponding deformed dharma holes 10, and a part of the non-circular portions 8b, 8b is also mutually attached from the opposing surfaces of both struts 2, 2. Let it protrude inward.

  Next, as shown in FIG. 7, the partition member 3 is slightly inclined so that the lower part is closer to the support columns 2, 2 than the upper part, and the left and right introduction ports 24, 24 are connected to the left and right support columns 2, 2. Are inserted into the non-circular portions 8b and 8b of the bolts 8 and 8 projecting inward from the lower portion of the opposite surface.

After the non-circular portions 8b, 8b of the left and right bolts 8, 8 have relatively entered from the corresponding introduction ports 24 to the engagement holes 23 at the back thereof, the upper portion of the partition member 3 is shown by an arrow in FIG. As shown in Fig. 2, the bolts 8 and 8 at the lower portions of the support columns 2 and 2 are rotated in a direction to stand up.
At this time, a slight relative rotation of the engagement hole 23 of the partition member 3 with respect to the non-circular portion 8b of the bolt 8 is allowed due to their dimensional errors. In order to allow this, the size of the engagement hole 23 and the introduction port 24 may be slightly larger than the size of the non-circular portion 8 b of the bolt 8.

  Due to this rotation, the male screw portions 8a and 8a of the bolts 8 and 8 projecting inward from the upper portions of the opposing surfaces of the left and right support columns 2 and 2 into the upper left and right introduction ports 26 and 26 in the partition member 3, respectively. When the partition member 3 enters relatively vertically and is in a substantially vertical state parallel to the columns 2 and 2, the male screw portions 8 a and 8 a are fitted into the engagement holes 25 and 25.

  Thereafter, the upper bolts 8 are pulled out to the inside of the left and right support columns 2, 2, and the non-circular portion 8 b of the bolt 8 is replaced with the non-circular small hole 12 in the deformation boring hole 10 and the engagement hole 25 in the partition member 3. And the nut 9 is tightened, and between the large-diameter head portion 8c of the bolt 8 and the nut 9, the plate thickness portion of the column 2 and the outer piece of the side frame 14 in the partition member 3 are secured. The upper part with 14a is fastened.

  Further, a nut 9 that is screwed to each bolt 8 below is tightened, and the plate thickness portion of the column 2 and the outside of the side frame 14 in the partition member 3 are interposed between the large-diameter head portion 8 c of the bolt 8 and the nut 9. The lower portions of the pieces 14a are fastened together.

When the partition member 3 is attached to the left and right support columns 2 and 2 as described above, the partition device can be assembled easily and quickly.
Further, the bolt 8 is less likely to drop off from the support column 2 during and after assembly, and the connection structure between the support column 2 and the partition member 3 can be simplified and the assembly workability can be improved.

  That is, after assembling, the large-diameter head 8c of the bolt 8 is inserted into the noncircular large hole 11 of the deformed daruma hole 10 at an angle, and then the large-diameter head 8c of the bolt 8 is In a normal posture in which the central axis is oriented in a direction perpendicular to the surface of the column 2, the bolt 8 is removed from the column 2 at the time of and after the assembly without being pulled out from the non-circular large hole 11 of the deformed harpoon hole 10. Can be prevented.

Further, when the non-circular portion 8b of the bolt 8 is fitted into the non-circular small hole 12 of the deformed saddle hole 10 in the support column 21, the bolt 8 is prevented from rotating, so that the nut screwed into the male screw portion 8a of the bolt 8 is secured. Even if the bolt 8 is not held with one hand when the bolt 9 is tightened, the bolt 8 does not rotate with the nut 9 and the nut 9 can be easily tightened, and the assembling workability can be improved.
Furthermore, it is not necessary to add a special member or perform a special process only by changing the shape of the conventional daruma hole, and the structure can be simplified.

  The non-circular portion 8b of the bolt 8 has a square shape, and the non-circular small hole 12 of the deformed harpoon hole 10 complements the quadrangle of the non-circular portion 8b of the bolt 8, and the non-circular large-shaped non-circular hole 10 of the distorted hole 10 The width W1 of the connecting portion 13 of the non-circular large hole 11 and the non-circular small hole 12 in the deformed dart hole 10 is set to be a quadrangle that coincides with the long axis or the short axis of the hole 11 and the male screw of the bolt 8 Since the diameter of the portion 8 a is larger than the diameter of the portion 8 a, when the non-circular portion 8 b of the bolt 8 is fitted into the non-circular small hole 12 of the deformation trap hole 10 in the column 2, Since the bolt 8 can be engaged with the three corners of the non-circular portion 8b of the bolt 8, the bolt 8 can be strongly prevented from rotating and the shape of the deformed daruma hole 10 is excellent in design. can do.

  When the non-circular large hole 11 of the deformed daruma hole 10 is elliptical or oval, the non-circular large hole of the deformed daruma hole 10 provided in the column 2 with the large-diameter head 8c of the bolt 8 inclined. 11 can be smoothly inserted, and if the long axis 11a of the elliptical non-circular large hole 11 faces the longitudinal direction of the column 2, the present invention can be applied to the column 2 having a narrow width. It can be applied and versatility is increased.

  When the engagement holes 23 and 25 are fitted to the non-circular portion 8b of the bolt 8, the bolt 8 is prevented from rotating with respect to the partition member 3, and the non-circular portion 8b of the bolt 8 is deformed. The nut 9 that is fitted into both the non-circular small hole 12 of the hole 10 and the engagement holes 23 and 25 and screwed into the male threaded portion 8a of the bolt 8 is fastened. The partition member 3 is fastened by a nut in a state in which the partition member 3 is prevented from rotating through the non-circular portion 8b of the bolt 8, and the coupling between the two members becomes stronger.

  In the embodiment shown in FIGS. 1 to 7, the engagement hole 23 into which the non-circular portion 8 b of the bolt 8 can be fitted in the lower part of the outer piece 14 a of the side frame 14 in the partition member 3, and the engagement hole 23, an introduction port 24 that opens obliquely downward toward the front edge of the outer piece 14a is provided, and an engagement hole 25 into which the non-circular portion 8b of the bolt 8 can be fitted on the upper portion of the outer piece 14a. An inlet 26 that opens horizontally from the joint hole 25 toward the front edge of the outer piece 14a is provided. However, as in the modification shown in FIG. 8, the outer piece 14a of the side frame 14 in the partition member 3 is provided. An engaging hole (not shown) similar to the engaging hole 23 and an introduction port 24 that opens obliquely downward from the engaging hole toward the front edge of the outer piece 14a are provided on the upper portion. At the bottom, the engagement hole 25 and from the engagement hole 25 to the front edge of the outer piece 14a It may be provided an inlet 26 for horizontally opening tinge.

  In this case, as shown in FIG. 8, the partition member 3 is slightly tilted so that the upper part is closer to the support columns 2 and 2 from the lower part, and the upper left and right introduction ports 24 and 24 are connected to the left and right support columns 2. The upper engagement holes are engaged with the non-circular portions 8b of the upper bolts 8 by inserting them into the non-circular portions 8b and 8b of the bolts 8 and 8 that protrude inward from the upper portions of the two opposing surfaces. After that, the lower part of the partition member 3 is rotated toward the support column 2 with the upper part as the center of rotation, and the male screw portion 8a of the bolt 8 temporarily fixed to the lower part of the support column 2 is provided at the lower part of the partition member 3. The engaging hole 25 is engaged with the male screw portion 8a through the horizontally opening introduction port 26, and then the bolt 8 is pulled inward and the nut 9 is tightened, whereby the plate thickness portion of the column 2 and the partition member 3 are Fasten the lower part of the side frame 14 with the outer piece 14a, After, by tightening the nut 9 screwed to the upper bolt 8 may be fastened to lower portions of the outer piece 14a of the side frame 14 in the sheet thickness portion and the partition member 3 of the tower 2.

The present invention is not limited only to the above-described embodiments and modifications, and can be implemented in the following modified modes, for example, without departing from the scope of the claims.
(1) The non-circular large hole 11 of the modified daruma hole 10 is provided in the support column 2 so that the long axis 11a faces in the left-right direction, and the non-circular large hole 11 facing in the vertical direction extends downward from the short axis 11b. One diagonal line of the square non-circular small hole 12 is made to coincide with the line 11c.
(2) In the case where the two plate members are simply connected, one of the plate members is provided with the deformation trap hole 10, the introduction ports 24 and 26 are omitted from the other plate member, and only the engagement holes 23 or 25 are provided. The male screw portion 8a of the bolt 8 is inserted into the engagement hole 23 or 25, and the nut 9 is screwed into the male screw portion 8a from the outside to be tightened.
(3) The length of the non-circular portion 8b in the bolt 8 in the axial direction is substantially equal to or smaller than the plate thickness of the support column 2, and the non-circular portion 8b is provided with a non-deformed hole 10 in the support column 2. Only the circular small hole 12 is fitted so that the bolt 8 is prevented from rotating around the column 2, and the engagement holes 23 and 25 in the partition member 3 are simply inserted through the male screw portion 8 a of the bolt 8, and the bolt 8 It is assumed that the rotation of the partition member 3 is not prevented.

The two-member connection structure of the present invention can be applied not only to the connection between the support column 2 and the partition member 3 in the partition device as described above, but also to any case where two plate members are connected.
Further, the partition device of the present invention includes not only a safety fence for preventing a person from entering a dangerous place as described above, but also a partition member such as a partition, a display shelf, and a column supporting the partition member. It can be applied to any partition device comprising

Width of W1 connecting portion Diameter of male threaded portion of L1 bolt Diameter of large-diameter head of L2 bolt 1 Floor 2 Strut 3 Partition member 4 Anchor plate 4a Upward projecting portion 5 Bolt 5a Nut 6 Anchor bolt 7 End cap 8 Bolt 8a Male thread portion 8b Non-circular portion 8c Large-diameter head 9 Nut 9a Flange 10 Deformation hole 11 Non-circular large hole 11a Long shaft 11b Short shaft 11c Extension line 12 Non-circular small hole 13 Connection portion 14 Side frame 14a Outer piece 15 Upper frame 16 Lower frame 17 Intermediate connecting member 18 Frame 19 Grid 20 Edge member 21 Vertical rod 22 Horizontal rod 23 Engagement hole 24 Introduction port 25 Engagement hole 26 Introduction port

Claims (6)

Between the male screw part and the large-diameter head having a diameter larger than the diameter, at least a part of the width is larger than the diameter of the male screw part, and at least a part of the width of the large-diameter head is A bolt provided with a non-circular portion smaller than the diameter;
The length of the major axis is larger than the diameter of the large-diameter head of the bolt, and the length of the minor axis is smaller than the diameter of the large-diameter head of the bolt. A non-circular large hole having a size that can be inserted through an inclination, and a non-circular portion of the non-circular large hole connected to a part of the periphery of the non-circular large hole. A first plate member provided with a deformed harpoon hole provided with a non-circular small hole adapted to be prevented from rotating;
A second plate member provided with an engagement hole into which the non-circular portion of the bolt can be fitted;
A nut that is screwed into the male screw portion of the bolt, and the non-circular portion of the bolt is fitted into a non-circular small hole of a deformed saddle hole in the first plate member and screwed into the male screw portion of the bolt A two-member connecting structure, wherein the first plate member and the second plate member are fastened between the large-diameter head of the bolt and the nut by tightening a nut to be tightened.   The non-circular portion of the bolt has a square shape, and the non-circular small hole of the deformed dart hole is complementary to the square shape of the non-circular portion of the bolt. 2. A quadrangle that coincides with an extension line of the shaft, and further, the width of the connecting portion of the non-circular large hole and the non-circular small hole in the deformed sag hole is larger than the diameter of the male screw portion of the bolt. The connection structure of 2 members.   The two-member connecting structure according to claim 1 or 2, wherein the non-circular large hole of the modified daruma hole is elliptical or oval.   When the non-circular portion of the bolt is fitted into the engaging hole in the second plate member, the bolt is prevented from rotating with respect to the second plate member, and the non-circular portion of the bolt is The nut according to any one of claims 1 to 3, wherein a nut that is fitted into both the non-circular small hole of the deformed darby hole in the plate member and the engagement hole in the second plate member is screwed to the male thread portion of the bolt. A two-member connecting structure according to claim 1. In a partitioning device comprising a partitioning member provided with side frames on at least both sides between a pair of support columns erected on a floor surface or the like,
The opposing part of each said support | pillar and the side frame of a partition member is formed with a board | plate material, and having connected the upper part and lower part of both board | plate materials with the connection structure of the 2 member in any one of Claims 1-4. Characteristic partition device.   In the upper and lower portions of the support column, a deformation darling hole is provided so that the non-circular small hole faces downward, and an engagement hole is provided on either the upper or lower side of the side frame in the partition member facing it. An inlet opening obliquely downward from the engagement hole toward the edge of the side frame is provided, and the engagement hole and the engagement hole are provided on either the upper side or the lower side of the side frame of the partition member. An introduction port that opens horizontally from the joint hole toward the edge of the side frame is provided, and the width of the both introduction ports is larger than the diameter of the male screw portion of the bolt and is the same as the minimum width of the non-circular portion of the bolt The partition device according to claim 5, wherein the partition device is smaller than that.

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