JP4748821B2 - Connecting device for corner part of frame structure - Google Patents

Description

  The present invention relates to a corner portion used to fasten and fix the corner portion of the frame structure from the inner corner side when assembling a frame structure for various uses such as a partition fence by connecting frame members such as aluminum molds at right angles to each other. The present invention relates to a connecting device.

As disclosed in Patent Document 1, a conventional corner structure connecting device includes a first blade member that abuts on an inner angle side surface of one orthogonal frame member and an inner angle surface of the other frame member. The first wing member is provided with a first fixing hole penetrating toward one frame member, and the second wing member is provided with a second fixing hole penetrating toward the other frame member. A substantially L-shaped corner bracket provided;
From a first bolt that passes through the first fixing hole from the inner corner side and reaches the corner fixing groove of one frame member, and a first nut that is screwed to the first bolt and tightened to the inner wall surface of the corner fixing groove A first clamp assembly,
A second bolt that penetrates the second fixing hole from the inner corner side and reaches the corner fixing groove of the other frame member, and a second nut that is screwed to the second bolt and tightened to the inner wall surface of the corner fixing groove. Consisting of a second clamp assembly,
In the first clamp assembly and the second clamp assembly, the lateral width of the first nut and the second nut is set so as not to pass through the corner fixing groove, and the first nut and the second nut are behind the corner fixing groove. It slides in the hollow part.

  Thus, in the first clamp assembly and the second clamp assembly, the first nut and the second nut slide along the longitudinal axis of the frame member and face the first bolt and the second bolt. Since it is necessary to rotate the first bolt and the second bolt after confirming that the meeting is established, the assembly work is complicated. In addition, the workability is not good because the first bolt, the second bolt and the first nut, and the second nut need to be aligned almost in a groping state. Further, since the nut is packed in a state where it is not screwed to the bolt and is carried to the site, there is a problem that the nut is dropped or lost.

Japanese Patent Laid-Open No. 2004-60789

  An object of the present invention is to reduce the number of parts and the number of assembly steps, and facilitate the assembly work of the frame structure.

The connecting device for a corner portion of the frame structure of the present invention comprises a first wing member that abuts on an inner angle side surface of one orthogonal frame member and a second wing member that abuts an inner angle side surface of the other frame member. The first wing member is provided with a first fixing hole penetrating toward the one frame member, and the second wing member is provided with a second fixing hole penetrating toward the other frame member. Corner brackets,
A first bolt that passes through the first fixing hole from the inner corner side and reaches the corner fixing groove of the one frame member, and is always screwed to the first bolt, and a head is formed in the corner fixing groove. A first clamp assembly comprising a cylindrical first nut fastened to the inner wall;
A second bolt that penetrates through the second fixing hole from the inner corner side and reaches the corner fixing groove of the other frame member, and is always screwed to the second bolt, and the head portion of the corner fixing groove It consists of a second clamp assembly consisting of a cylindrical second nut that is fastened to the inner wall surface,
In the first clamp assembly and the second clamp assembly, each of the heads of the first nut and the second nut has a lateral width that can pass through the corner fixing groove and a longitudinal dimension that cannot pass through the corner fixing groove. And when the head is inserted into each corner fixing groove, the head is arranged so that the longitudinal dimension direction of the head is aligned with the longitudinal axis of the frame member. Is arranged so that the longitudinal dimension direction of the frame intersects the longitudinal axis of the frame member,
The screw thread of the first nut is pressed against the screw thread of the first bolt by the first coil spring compressed between the intermediate step part of the first fixing hole and the intermediate flange part of the first nut, and the head The first nut is set to rotate integrally with the first bolt until the portion reaches the clamp start position,
The screw thread of the second nut is pressed against the screw thread of the second bolt by a second coil spring compressed between the intermediate step part of the second fixing hole and the intermediate flange part of the second nut, and the head The second nut is set to rotate integrally with the second bolt until the portion reaches the clamp start position.

In the corner connecting device of the present invention, the first clamp assembly loaded in the first fixed hole of the first wing member of the corner bracket and the second clamp loaded in the second fixed hole of the second wing member. In the assembly, the cylindrical first nut and the second nut are always screwed to the first bolt and the second bolt, respectively, and between the intermediate step portion of the first fixing hole and the intermediate flange portion of the first nut. The first nut is pressed against the thread of the first bolt by the first coil spring compressed to the first bolt until the head reaches the clamp start position. Set to rotate together with the
While the first coil spring compressed between the intermediate step portion of the first fixing hole and the intermediate flange portion of the first nut presses the screw thread of the first nut against the screw thread of the first bolt, the middle of the second fixing hole. Each head of the first nut and the second nut is pressed by pressing the screw thread of the second nut against the screw thread of the second bolt by the second coil spring compressed between the step portion and the intermediate flange portion of the second nut. Until the clamp start position is reached, the first nut and the second nut are set to rotate together with the first bolt and the second bolt, so the positions of the first nut and the second nut are Without worrying, the corners of the frame member can be assembled accurately and efficiently.

In both the first clamp assembly and the second clamp assembly, the first nut and the second nut are always screwed to the first bolt and the second bolt, respectively. There is no problem of dropping or losing 2 nuts. Since it is preset, there is no inefficiency that the nut and bolt are aligned in a groping state.
Furthermore, since there are no special additional parts in achieving the ease of assembly work, the number of parts and the number of assembly processes can be reduced.

FIG. 1 is a front view of a corner portion of a frame structure to which a corner portion connecting device according to an embodiment of the present invention is applied. 2 is a cross-sectional view taken along line AA in FIG. 3 is a cross-sectional view taken along the line CC of FIG. 4 is a cross-sectional view taken along line BB in FIG. FIG. 5 is a bottom view of the corner bracket used in the coupling device of FIG. 6 is a cross-sectional view taken along the line DD of FIG. FIG. 7 is a cross-sectional view taken along line EE of FIG. 8 is a cross-sectional view taken along line FF in FIG. FIG. 9 is a front view of the first bolt used in the first clamp assembly used in the coupling device of FIG. FIG. 10 is a left side view of the first bolt of FIG. FIG. 11 is a front view of a retaining ring used in the first clamp assembly. FIG. 12 is a left side view of the first coil spring of the first clamp assembly. FIG. 13 is a front view of the second bolt used in the second clamp assembly used in the coupling device of FIG. FIG. 14 is a left side view of the second bolt of FIG. FIG. 15 is a front view of a retaining ring used in the second clamp assembly. FIG. 16 is a left side view of the first coil spring of the second clamp assembly. 17 is a plan view of the first fixing hole portion of the first wing member of the corner bracket of FIG. 18 is a cross-sectional view taken along the line GG of FIG. 19 is a cross-sectional view taken along line HH in FIG. 20 is a cross-sectional view taken along the line II of FIG. 21 is a cross-sectional view taken along line JJ in FIG. 22 is a perspective view of the first fixing hole portion of FIG. FIG. 23 is a perspective view of the first fixing hole portion of FIG. 17 from another angle. 24 is a plan view of a second fixing hole portion of the second wing member of the corner bracket of FIG. 25 is a cross-sectional view taken along the line KK of FIG. 26 is a cross-sectional view taken along line LL in FIG. 27 is a cross-sectional view taken along line MM in FIG. FIG. 28 is a sectional view taken along line NN in FIG. FIG. 29 is a perspective view of the first fixing hole portion of FIG. FIG. 30 is a perspective view of the first fixing hole portion of FIG. 24 from another angle. FIG. 31 is a perspective view of a first nut used in the first clamp assembly used in the coupling device of FIG. FIG. 32 is a plan view of the first nut of FIG. FIG. 33 is a right side view of the first nut of FIG. FIG. 34 is a left side view of the first nut of FIG. 35 is a cross-sectional view taken along line OO in FIG. FIG. 36 is a perspective view of a second nut used in the second clamp assembly used in the coupling device of FIG. FIG. 37 is a plan view of the second nut of FIG. FIG. 38 is a right side view of the second nut of FIG. FIG. 39 is a left side view of the second nut of FIG. 35 is a cross-sectional view taken along the line PP of FIG.

In the illustrated embodiment, the substantially L-shaped corner bracket 1 is provided on a first blade member 4 that abuts on the surface 3 on the inner corner side of one of the orthogonal frame members 2 and a surface 6 on the inner corner side of the other frame member 5. The first wing member 4 is provided with a first fixing hole 8 penetrating toward the one frame member 2, and the second wing member 7 penetrates toward the other frame member 5. A second fixing hole 9 is provided.
The first clamp assembly 10 is always screwed to the first bolt 12 that passes through the first fixing hole 8 from the inner corner side and reaches the corner fixing groove 11 of one frame member 2. The head 14 is formed of a cylindrical first nut 13 that is fastened to the inner wall surface of the corner fixing groove 11.
The second clamp assembly 15 passes through the second fixing hole 9 from the inner corner side and reaches the corner fixing groove 16 of the other frame member 5, and is always screwed into the second bolt 17. The head 19 includes a cylindrical second nut 18 that is fastened to the inner wall surface of the corner fixing groove 16.

In the first clamp assembly 10 and the second clamp assembly 15, the heads 14 and 19 of the first nut 13 and the second nut 18 have a pair of opposing sides that are longer than another pair of opposing sides. It has a long deformed diamond shape, and has a width dimension that allows passage through the corner fixing grooves 11 and 16 and a longitudinal dimension that prevents passage through the corner fixing grooves 11 and 16.
When inserted into the corner fixing grooves 11, 16, the heads 14, 19 are arranged so that the longitudinal direction of the heads 14, 19 is aligned with the longitudinal axis of the frame members 2, 5. , 19 are arranged such that the longitudinal dimension direction thereof intersects the longitudinal axis of the frame members 2, 5.

The first coil spring 22, which is compressed and inserted between the intermediate step portion 20 of the first fixing hole 8 and the intermediate flange portion 21 of the first nut 13, has a screw thread of the first nut 13 and a screw thread of the first bolt 12. Until the head 14 reaches the clamp start position, the first nut 12 and the first bolt 13 are integrally rotated together.
The second coil spring 25, which is compressed and inserted between the intermediate step portion 23 of the second fixing hole 9 and the intermediate flange portion 24 of the second nut 18, has a screw thread of the second nut 17 as a screw thread of the second bolt 17. Until the head 19 reaches the clamping start position, the second nut 18 and the second bolt 17 are integrally rotated together.

  In the present embodiment, a partially-notched circular hole 26 having an opening angle of 250 degrees is formed on the inner peripheral surface of the first fixed hole 8 of the first wing member 4 adjacent to the intermediate step portion 20. A guide projection 27 having an opening angle of 180 degrees is formed at the tip of the 1 nut 13. The guide protrusion 27 of the first nut 13 is inserted into the partially cut-out circular hole 26 of the first fixing hole 8, and the first nut 13 can be rotated around its axis by the difference between the opening angles of the two. . Corresponding to the rotation angle position of the first nut 13, the head portion 14 of the first nut 13 is located at a position where the longitudinal dimension direction of the head portion 14 is aligned with the longitudinal axis of the frame member 2 (to the corner fixing groove 11). And a position (clamp start position) where the longitudinal dimension direction of the head 14 intersects the longitudinal axis of the frame member 2 is selectively disposed.

  When the first bolt 12 is turned in a predetermined direction at a clamp start position where one side surface of the guide protrusion 27 of the first nut 13 is in contact with a predetermined end wall surface of the partially cutout circular hole 26 of the first fixing hole 8, The first bolt 12 and the first nut 13 do not rotate together, and the first nut 13 has a guide projection 27 guided by the end wall surface of the partially cutout circular hole 26 and slides in the axial direction of the first bolt 12. Both ends of the rhombus head 14 are fastened to the inner wall surface of the corner fixing groove 11. By this tightening, the first wing member 4 of the corner bracket 1 is fastened and fixed to the inner corner side surface 3 of the one frame member 2.

  On the inner peripheral surface of the second fixed hole 9 of the second wing member 7, a partially cut circular hole 28 having an opening angle of 250 degrees is formed adjacent to the intermediate step portion 23, and the tip of the second nut 18 is formed. A guide protrusion 29 having an opening angle of 180 degrees is formed on the part. The guide protrusion 29 of the second nut 18 is inserted into the partially cutout circular hole 28 of the second fixing hole 9, and the second nut 19 can be rotated around its axis by the difference between the opening angles of the two. . Corresponding to the rotation angle position of the second nut 18, the head portion 19 of the second nut 18 is positioned at a position where the longitudinal dimension direction of the head portion 19 is aligned with the longitudinal axis of the frame member 5 (to the corner fixing groove 16. And a position (clamp start position) where the longitudinal dimension direction of the head portion 19 intersects the longitudinal axis of the frame member 5 is selectively disposed.

When the second bolt 17 is turned in a predetermined direction at a clamp start position where one side surface of the protrusion 29 of the second nut 18 is in contact with a predetermined end wall surface of the partially cutout circular hole 28 of the second fixing hole 8, 2 The bolt 17 and the second nut 18 do not rotate together. The second nut 18 has a guide projection 29 guided by the end wall surface of the partially cutout circular hole 28, and slides in the axial direction of the second bolt 17. Both ends of the mold head 19 are fastened to the inner wall surface of the corner fixing groove 16. By this tightening, the second wing member 7 of the corner bracket 1 is fastened and fixed to the inner corner surface 6 of the other frame member 5.
Thus, one frame member 2 and the other frame member 5 are arranged in a mutually orthogonal state via the corner bracket 1 and are firmly assembled.

  In this embodiment, a positioning projection 30 that engages with the corner fixing groove 11 of one frame member 2 is provided on the back surface of the first wing member 4 of the corner bracket 1, and the other surface is provided on the back surface of the second wing member 7. Positioning protrusions 31 that engage with the corner fixing grooves 16 of the frame member 5 are provided. These positioning projections 30 and 31 have a function of stably setting the corner bracket 1 with respect to the frame members 2 and 5.

A triangular protrusion 32 is provided on the peripheral surface between the head 14 of the first nut 13 and the cylindrical main body so as to face the diameter. As described above, when the first nut 13 slides to the clamp establishment position, the triangular protrusion 32 engages with the substantially oval end 33 of the first fixing hole 8 opened on the back surface of the first wing member 2. It functions as a detent for the first nut 13.
In addition, a triangular protrusion 34 is provided on the peripheral surface between the head 19 of the second nut 18 and the cylindrical main body so as to face the diameter. As described above, when the second nut 18 slides to the clamp establishment position, the triangular protrusion 34 engages with the substantially oval end portion 35 of the second fixing hole 9 opened on the back surface of the second wing member 7. It functions as a detent for the second nut 18.

A retaining ring 37 is fitted in the annular groove 36 at the tip of the first bolt 12, and the retaining ring 37 is engaged with the inner bottom portion of the enlarged diameter hole 38 in the head 14 of the first nut 13. The first nut 13 does not fall off from the first bolt 12. The head 44 of the first bolt 12 is provided with a hexagonal wrench hole 42. A knurled notch is provided on the peripheral surface of the head 44.
A retaining ring 40 is fitted in the annular groove 39 at the tip of the second bolt 17, and the retaining ring 40 engages with the inner bottom portion of the enlarged diameter hole 41 in the head portion 19 of the second nut 18. The second nut 18 does not fall off from the second bolt 17. The head 45 of the second bolt 17 is provided with a hexagonal wrench hole 43. A knurled notch is provided on the peripheral surface of the head 45.

DESCRIPTION OF SYMBOLS 1 Corner bracket 2 One frame member 3 Inner angle side surface 4 First blade member of corner bracket 5 Other frame member 6 Inner angle side surface 7 Second blade member of corner bracket 8 First fixing hole 9 of first blade member 9 Second fixing hole of second wing member 10 First clamp assembly 11 Corner fixing groove of one frame member 12 First bolt 13 First nut 14 Head of first nut 15 Second clamp assembly 16 Other frame member Corner fixing groove 17 second bolt 18 second nut 19 head of second nut 20 intermediate stepped portion of first fixing hole 21 intermediate flange of first nut 22 first coil spring 23 intermediate stepped portion of second fixing hole 24 second Intermediate flange portion of 2 nut 25 Second coil spring 26 Partially cutout circular hole of first fixing hole 27 Guide of first nut Start 28 Partially cut circular hole of second fixing hole 29 Guide protrusion of second nut 30 Positioning protrusion of first wing member 31 Positioning protrusion of second wing member 32 Triangular protrusion of first nut 33 Abbreviation of first fixing hole Oval end portion 34 Triangular protrusion of the second nut 35 Substantially oval end portion of the second fixing hole 36 Annular groove 37 of the first bolt 37 Retaining ring 38 Diameter expansion hole of the first nut 39 Annularity of the second bolt Groove 40 Retaining ring 41 Second nut enlarged hole 42 Wrench hole of first bolt 43 Wrench hole of second bolt 44 Head of first bolt 45 Head of second bolt

Claims (1)

The first wing member abutting on the inner angle side surface of the one frame member orthogonal to each other, and the second wing member abutting on the inner angle side surface of the other frame member, and the first wing member serving as the one frame member A substantially fixed L-shaped corner bracket provided with a first fixing hole penetrating toward the second wing member and a second fixing hole penetrating the second wing member toward the other frame member;
A first bolt that passes through the first fixing hole from the inner corner side and reaches the corner fixing groove of the one frame member, and is always screwed to the first bolt, and a head is formed in the corner fixing groove. A first clamp assembly comprising a cylindrical first nut fastened to the inner wall;
A second bolt that penetrates through the second fixing hole from the inner corner side and reaches the corner fixing groove of the other frame member, and is always screwed to the second bolt, and the head portion of the corner fixing groove It consists of a second clamp assembly consisting of a cylindrical second nut that is fastened to the inner wall surface,
In the first clamp assembly and the second clamp assembly, each of the heads of the first nut and the second nut has a lateral width that can pass through the corner fixing groove and a longitudinal dimension that cannot pass through the corner fixing groove. And when the head is inserted into each corner fixing groove, the head is arranged so that the longitudinal dimension direction of the head is aligned with the longitudinal axis of the frame member. Is arranged so that the longitudinal dimension direction of the frame intersects the longitudinal axis of the frame member,
The screw thread of the first nut is pressed against the screw thread of the first bolt by the first coil spring compressed between the intermediate step part of the first fixing hole and the intermediate flange part of the first nut, and the head The first nut is set to rotate integrally with the first bolt until the portion reaches the clamp start position,
The screw thread of the second nut is pressed against the screw thread of the second bolt by a second coil spring compressed between the intermediate step part of the second fixing hole and the intermediate flange part of the second nut, and the head A corner-section connecting device having a frame structure in which the second nut is integrally rotated with the second bolt and rotated until the portion reaches the clamp start position.

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