JP2013092041A - Fall prevention metal fitting - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fall prevention metal fitting capable of connecting with a wire rope in any construction using a suspension bolt.SOLUTION: A fall prevention metal fitting includes: an A support piece 1 provided by extending one end of a holding and fixing part 18 capable of holding and fixing to a suspension bolt 19; and a B support piece 3 provided by extending the other end of the holding and fixing part 18. A projection 2 provided in the A support piece 1 is locked with a hooking hole 4 provided in the B support piece 3 to tightly fix the holding and fixing part 18 to the suspension bolt 19. A slip-off prevention member 15 provided in one end of a first connection member 13 inserted into a circular arc part 8A between the A support piece 1 and the B support piece 3 is supported on upper parts of the A support piece 1 and the B support piece 3. A wire protection folding part 7, in which lower parts of the A support piece 1 and the B support piece 3 are folded outward, is provided. A wire locking hole 9 capable of attaching one end of a second connection member 13 on tip sides of the A support piece 1 and the B support piece 3 is provided to connect various equipment and a ceiling backing material 12 with other ends of the first connection member 13 and the second connection member 13.

Description

  The present invention relates to a fall-preventing metal fitting using a wire or the like for preventing various types of equipment such as a building ceiling material, lighting equipment, speakers, and air vents from falling in an emergency such as an earthquake.

  Conventionally, building ceiling materials, lighting fixtures, speakers, and the like have been considered to suspend the main body with suspension bolts and to prevent steadying, but are not so much considered for drops during earthquakes. Moreover, when the steady rest is used for preventing the fall, it can be used for preventing the fall only in one direction, and cannot be used for preventing a plurality of drops. In addition, there is a work of attaching bolts, nuts, etc., which increases the unit price.

  Conventionally, bolts with wires 23 are screwed into inserts 22 and post-fixed anchors etc. from ceiling slabs, and lighting fixtures 16 and speakers are used for preventing fall as shown in FIG. There was not (patent document 1).

  Although it is sometimes used as a support bracket for exclusive use of all conventional screw bolts, it is good to install it as one way to prevent falling because the bolt and nut are passed through the hole of the main body and the wire is wound around the bolt. When the prevention wire is attached, the support bracket dedicated to all screw bolts does not rotate, so the wire may be damaged, and a special bracket is required for engagement.

Japanese Patent Application Laid-Open No. 07-240109

  The conventional construction method that uses bolts with wires requires one metal fitting for each fallen object, which is good for light items with a small quantity, but with heavy items such as ceiling materials and lighting fixtures. In many cases, if the positions of the inserts and post-fixed anchors are not accurate, the lengths of the wires are different and the weight distribution is not even, the construction becomes difficult, and the reliability for preventing the fall is low.

  Therefore, the present invention has been created to solve the above-mentioned problems, and in any construction using a suspension bolt, the wire rope can be connected as a fall prevention wire, and a special connection fitting can be used as a wire rope. The purpose of the present invention is to provide a fall-preventing metal fitting that can connect a general wire rope with a T-shaped caulking metal fitting or a W crimp metal fitting.

  According to the first aspect of the present invention, there is provided a narrow portion that can be tightly attached to a male screw member such as a suspension bolt, a first support piece provided with one of the narrow portions, and the other of the narrow portions. And a second support piece provided to extend, and a locking portion provided in the first support piece is locked to a lock receiving portion provided in the second support piece, thereby In a state where the attaching portion is fastened to the male screw member and the locking portion is locked to the locking receiving portion, a gap is formed between the first support piece and the second support piece, A retaining portion provided on one side of the first connecting member inserted through the gap is supported on top of the first support piece and the second support piece, and the first support piece and the second support piece. A protective part that is bent outward at the lower part of the piece, and a mounting part to which one of the second connecting members can be attached to the front end side of the first supporting piece and / or the second supporting piece, The other of the first connection member and the second connecting member, characterized by connecting various devices and a ceiling base member and the like.

  According to a second aspect of the present invention, the male screw member is a suspension bolt for a ceiling base material, a suspension bolt for a building facility, or the like, and the fall prevention metal fitting is attached to an upper portion of a nut screwed to the male screw member. It is characterized by that.

  The invention according to claim 3 is characterized in that the male screw member is a bolt screwed to an insert hardware embedded in a ceiling slab.

  The invention according to claim 4 is characterized in that the narrow portion is provided with a plurality of through holes along the longitudinal direction of the male screw member.

  The invention according to claim 5 is characterized in that a screw groove that can be screwed into the male screw member is provided on an inner surface of the narrowed portion.

  The invention of claim 6 comprises holding means for connecting the first support piece and the second support piece, and holding the holding portion in a state of being locked to the locking receiving portion, One of the third connecting members is attached to the holding means, and various devices are connected to the other of the third connecting members.

  According to the first aspect of the present invention, the locking portion is locked to the locking receiving portion and the narrow portion is fastened to the male screw member. Can be attached to. In addition, since the connection member protection unit is provided, the first connection member attached to the gap between the first support piece and the second support piece is worn by the lower portions of the first support piece and the second support piece. And can be prevented from being damaged. Furthermore, by attaching the first connecting member and the second connecting member to the fall prevention fitting, it is possible to prevent a plurality of various devices, ceiling base materials, and the like from falling.

  According to the second aspect of the present invention, it is possible to easily install the fall prevention metal fitting on the existing ceiling bolt for the ceiling base material or the suspension bolt for the building equipment.

  According to invention of Claim 3, a fall prevention metal fitting can be installed in the arbitrary positions of a ceiling slab.

  According to the fourth aspect of the present invention, the narrow portion is easily deformed along the shape of the male screw member, whereby the bending operation of the narrow portion is promoted, and workability can be improved.

  According to the invention of claim 5, since the inner side surface of the narrowing portion is screwed into the male screw member, the narrowing portion narrowly attached to the male screw member is prevented from sliding along the longitudinal direction of the male screw member. The installation of the fall prevention bracket is stable.

  According to the sixth aspect of the invention, the holding means holds the locking state of the locking portion and the locking receiving portion, so that the tight fastening to the male screw member of the narrowed portion is stable, and the fall prevention metal fitting Installation is more stable. By attaching the third connecting member to the holding means, it is possible to prevent a plurality of various devices, ceiling base materials, and the like from falling together with the first connecting member and the second connecting member.

It is a perspective view of the fall prevention metal fitting for suspension bolts in 1st Example of this invention. It is a top view of the fall prevention metal fitting for suspension bolts which shows the state which fixes a narrow part to a suspension bolt same as the above. It is a perspective view which shows the use condition of the fall prevention metal fitting for suspension bolts same as the above. It is a perspective view which shows the use condition of the fall prevention metal fitting for suspension bolts which prevents the fall of a some ceiling installation same as the above. It is a perspective view which shows the use condition different from FIG. 3 of the fall prevention metal fitting for suspension bolts same as the above. It is a perspective view of a field edge mounting bracket same as the above. It is sectional drawing which shows the state which attached the 1st field edge member to the field edge mounting bracket same as the above. It is sectional drawing which shows the state which attached the 2nd field edge member to the field edge mounting bracket same as the above. It is sectional drawing of the fall prevention metal fitting for suspension bolts in 2nd Example of this invention. It is sectional drawing of the ceiling structure in 3rd Example of this invention. It is a perspective view of a ceiling structure same as the above. It is a perspective view which shows the use condition of a fall prevention metal fitting same as the above. It is a perspective view of the ceiling structure in 4th Example of this invention. It is a top view of a ceiling structure same as the above. It is an AA line sectional view in Drawing 14 same as the above. It is a BB sectional drawing in FIG. 14 same as the above. It is a perspective view of the attachment tool for connection parts same as the above. It is a top view of the attachment tool for connection parts same as the above. It is a front view of the attachment tool for connection parts same as the above. It is a side view of the attachment tool for connection parts same as the above. It is a top view of the ceiling structure which shows the state by which the other apparatus was installed in another square group adjacent to a predetermined square group same as the above. FIG. 4 is a cross-sectional view of the main part showing a state where the first screw member is screwed into the first fixing screw hole and one fixing part is fixed to the ceiling base material. FIG. 6 is a cross-sectional view of the main part showing a state in which a third screw member is screwed into a third fixing screw hole and the other fixing part is fixed to a ceiling base material. It is sectional drawing of the fall prevention metal fitting in 5th Example of this invention. It is a side view of a fall prevention metal fitting same as the above. It is a side view which shows the state which mounted | wore with the fall prevention metal fitting same as the above. It is a side view which shows the state which connected the connection member to the volt | bolt of the fall prevention metal fitting same as the above. It is a perspective view of a fall prevention metal fitting same as the above. It is sectional drawing of the fall prevention metal fitting in 6th Example of this invention. It is a front view which shows the example of mounting | wearing with the conventional connection wire.

  Preferred embodiments of the present invention will be described with reference to the accompanying drawings. The embodiments described below do not limit the contents of the present invention described in the claims. In addition, all of the configurations described below are not necessarily essential requirements of the present invention.

  1 to 8 show a first embodiment of the present invention, and the drop-preventing metal fitting for a suspension bolt according to this embodiment has a connecting member 13 as a ceiling fixture such as a lighting fixture 16, a speaker 17, and an air vent. It is a metal fitting for connecting the connecting member 13 to the suspension bolt 19 when used as a fall prevention or the like.

The basic structure of the drop-preventing metal fitting is that the steel plate is bent into a substantially C shape, and the narrow portion 18, the A support piece 1, and the B support piece 3 are integrally formed. (See Figure 1)
In addition, a plurality of round holes 10 are opened on the side surface along the longitudinal direction of the suspension bolt 19 in the narrow portion 18. The round hole 10 can facilitate the bending work of the narrow portion 18 when the narrow portion 18 is bent into a substantially C shape and attached to the side surface of the suspension bolt 19.

  The connecting member 13 includes an annular portion 14 at one end of a connecting member main body 13A made of a wire rope, and a retaining member 15 or an annular portion 13B at the other end of the connecting member main body 13A.

  The retaining member 15 is a disk-shaped fitting having a diameter larger than at least the connecting member main body 13A.

  For example, when a steel plate with a thickness of about 1.6 mm is used as a drop-preventing bracket for a suspension bolt, a pair of left and right round holes 10 are opened as shown in FIG. The narrow portion 18 can be easily bent, and the strength can be maintained.

  By crimping the narrow portion 18 to the suspension bolt 19, the suspension bolt 19 and the narrow portion 18 are tightened to reduce backlash.

  In the drop-preventing metal fitting for the suspension bolt, the A support piece 1 provided with the protrusion 2 as the convex portion on one side and the B support piece 3 provided with the hooking hole 4 as the hole portion on the other side It consists of a strip-like member extended from both ends. By sandwiching both support pieces 1 and 3, the bent protrusion 2 is fitted into the hook hole 4, and the bent protrusion 2 is hooked into the hook hole 4. Thus, when the A support piece 1 and the B support piece 3 are tightened together, the suspension bolt 19 is tightened in the narrow portion 18, and the suspension bolt 19 is fitted with a drop-proof fitting for the suspension bolt.

  Here, the protrusion 2 is provided so as to be bent in a substantially L shape inside the tip side of the A support piece 1.

  The hook hole 4 is formed in a substantially L-shaped kerf shape that allows the protrusion 2 to be inserted and locked to the tip side of the B support piece 3.

  When the protrusion 2 is inserted into the hook hole 4, the tip end portion 2 </ b> A formed by tilting the protrusion 2 is locked to the edge portion of the hook hole 4.

  As described above, the characteristic configuration of the drop-preventing metal fitting for the suspension bolt according to the present embodiment includes a narrow portion 18 narrowly attached to the side surface of the suspension bolt 19 and one side extended from the narrow portion 18 is a convex portion. The A support piece 1 is provided with the B support piece 3 provided with the hole on the other side.

  Further, the wire hooking portion 5, the detachment preventing projection portion 6 and the wire insertion portion 8 are provided.

  Further, the wire engagement hole 9 and the wire engagement groove 24 are provided at the same hole positions of the A support piece 1 and the B support piece 3.

  Further, the wire-protecting bent portion 7 is provided.

  In order to solve the problem, a plurality of round holes 10 are opened on the side surface of the narrow portion 18 along the longitudinal direction of the suspension bolt 19 in order to promote the bending operation of the narrow portion 18 and maintain the strength. This means.

  An example of the ceiling structure of the present embodiment is as follows. Concrete 21 as an upper floor slab, and an insertion nut (not shown) embedded in the concrete 21 are screwed and suspended from the concrete 21. A hanger 11 attached to the suspension bolt 19 by being tightly attached to a plurality of nuts 30, 31, and a field edge receiving member 12 as a ceiling base material made of a substantially C-shaped section steel attached to the hanger 11; The field edge members 33 and 34 as ceiling base materials made of section steel having a substantially C-shaped cross section are attached to the lower part of the field edge receiving member 12 via the mounting bracket 32, and are attached to the lower parts of the field edge members 33 and 34. And a ceiling member 20 made of a ceiling panel such as a plasterboard or a control panel.

  The hanger 11 is formed by bending a steel plate into a substantially S shape. The hanger 11 includes a bolt mounting portion 35 that is horizontally formed and includes a through portion (not shown) through which a suspension bolt 19 can be inserted, and a bolt mounting portion 35. After extending one of them vertically downward, it is provided with a field edge receiving holding portion 36 that is formed in a hook shape and can hold the field edge receiving member 12.

  The field edge members 33 and 34 include two types of field edge members having different widths H1 and H2 in the short side direction (Y direction in the figure) which is a direction orthogonal to the longitudinal direction (X direction in the figure) and the horizontal direction. There is a wide first field member 33 with a large width, and a narrow second field member 34 with a small width. Here, the width H1 of the first field member 33 is set to be approximately twice the width H2 of the second field member 34.

  The field edge mounting bracket 37 has a cross section of the first field edge side groove 39 of the first field edge member 33 at the lower part of a metal body 38 made of a thin metal plate such as stainless steel or aluminum formed in a square shape. The cross section of the first field edge mounting portion 41 that can be engaged with the first field edge side edge portion 40 formed by being folded back into a substantially J-shape, and the second field edge side groove portion 42 of the second field edge member 34 is substantially omitted. A second field edge mounting portion 44 that can be engaged with a second field edge side edge 43 formed by folding back into a J shape, and a female screw portion 45 made of a nut provided at the central portion of the metal fitting body 38 are provided. ing. Here, the female screw portion 45 may be formed by screwing a screw groove into a through portion 38 </ b> A formed in the metal fitting body 38 in addition to the nut.

  The first field edge mounting portion 41 is raised downward substantially parallel to a pair of opposite end portions 46, 46 of the metal fitting body 38, and is inserted into the first field edge side groove portion 39 of the first field edge member 33. A pair of possible first raised portions and the tips of the first raised portions are bent outward so as to be separated from each other to form a substantially J-shaped cross section, and the inner surface of the first field edge 40 The first locking portion is provided so as to be engageable along the longitudinal direction (X direction in the drawing) and holds the first field edge member 33 slidably along the first field edge side groove 39. Is provided.

  The second field edge mounting portion 44 is raised between the first rising portions 47 and 47 of the metal fitting body 38 in a downward direction substantially parallel to the first rising portion 47, and the first rising portion. A pair of second rising portions 49, 49 that can be inserted into the second field-side groove 42, and each second rising portion 49, The front end of 49 is bent outward so that the distance from each other is increased, and the second field edge is provided on the inner surface of the second field edge side edge portion 43 so as to be engageable along the longitudinal direction (X direction in the figure). A second locking portion 50 that holds the member 34 slidably along the second field-side groove portion 42 is provided.

  Here, the first rising portions 47, 47 are formed so as to be inclined from each other so as to approach each other from the proximal end on the metal fitting body 38 side to the distal end on the first locking portion 48 side. Similarly, the two raised portions 49 and 49 are also formed to be inclined so that the distance from each other approaches from the proximal end on the metal fitting body 38 side to the distal end on the second locking portion 50 or 50 side.

  A field connection member 51 that connects the drop prevention metal fitting for the suspension bolt, the field edge receiving member 12 and the like and the field edge attachment metal 37 is connected to a connection member main body 52 composed of a wire rope and one end of the connection member main body 52. A male screw portion 53 made of a bolt that can be screwed to the female screw portion 45 and an annular portion 54 provided at the other end of the connecting member main body 52 are provided.

  With the above configuration, the drop-prevention fitting for the suspension bolt can be tightened by being sandwiched between the suspension bolts 19 on the ceiling, and the plurality of connection members 13 and the field connection member 51 connected to the drop-prevention fitting for the suspension bolt are used. This makes it possible to prevent multiple instruments from falling.

  Moreover, in the fall prevention metal fitting for suspension bolts attached to the suspension bolt 19, each wire insertion part 8 and 8 formed by bending the substantially center part of the A support piece 1 and the B support piece 3 into a substantially semicircular arc shape, When the A support piece 1 and the B support piece 3 are tightened, an arcuate part 8A through which the connecting member 13 can be inserted is formed with the concave arcuate surfaces facing each other. The connecting member 13 is inserted into the arc portion 8A, and the upper portions of the A support piece 1 and the B support piece 3 are cut into a concave shape and taken to the wire hooking portion 5 formed. There is a detachment prevention protrusion 6 that protrudes from the upper part of the A support piece 1 and the B support piece 3 substantially in parallel with an interval equal to or greater than the thickness of the flat part 5A of the wire hooking part 5 and the retaining member 15. The retaining member 15 is sandwiched from above and below by the wire hooking portion 5 and the detachment preventing projection 6 so that the connecting member 13 is difficult to come off from the wire hooking portion 5. Further, a plurality of connecting members 13 can be attached to the wire hooking portion 5 by forming the wire hooking portion 5 longer than the diameter of the retaining member 15 by at least twice.

  By having the wire engaging hole 9 penetrating at the tip of each support piece 1, 3, the connecting member 13 and the field connecting member 51 can be engaged. Here, each of the support pieces 1 and 3 is provided with a groove-like wire engaging groove 24 formed by continuously cutting from the upper part on the distal end side to the wire engaging hole 9. The portion 14 and the annular portion 54 of the field edge connection member 51 are engaged with the wire engagement hole 9 from the wire engagement groove 24.

  By providing a bent portion 7 for wire protection in which the lower portions of the A support piece 1 and the B support piece 3 are bent outwardly in a substantially arc shape so as to be separated from each other, a convex arc of the wire protection bent portion 7 is provided. The connecting member 13 is hardly damaged by the surface.

  A plurality of round holes 10 are opened on the side surface along the longitudinal direction of the suspension bolt 19 in the narrow portion 18. This round hole 10 can facilitate the bending operation of the narrow portion 18 when the narrow portion 18 is bent and attached to the side surface of the suspension bolt 19. For example, when a steel plate having a thickness of about 1.6 mm is used as a metal fitting, as shown in the figure, by opening a pair of left and right round holes 10, it is possible to bend easily with fingers, The strength can be maintained.

  On the ceiling, the suspension bolt 19 is inserted into a through portion (not shown) of the bolt attachment portion 35, and the bolt attachment portion 35 is narrowed by the first nut 30 and the second nut 31 screwed to the suspension bolt 19. The hanger 11 is attached to the suspension bolt 19, and the field receiving member 12 is held by the field receiving holder 36 of the hanger 11. Further, the first field edge member 33 or the second field edge member 34 and the field edge receiving member 12 are assembled to each other through a known mounting bracket 32 so as to be orthogonal to each other. The ceiling member 20 is attached to the lower surface portion of the field edge member 33 or the second field edge member 34.

  When attaching the field edge mounting bracket 37 to the first field edge member 33, the first rising portion 47 is inserted into the first field edge side groove portion 39 of the first field edge member 33, and the first engagement portion 37 is inserted. The stop portion 48 is engaged with the inner surface of the first field edge side edge portion 40 along the longitudinal direction (X direction in the drawing) of the first field edge member 33, so that the first field edge member 33 is engaged with the first field edge member 33. It is slidably held along the edge-side groove 39.

  Further, when attaching the field edge mounting bracket 37 to the second field edge member 34, the second rising portion 49 is inserted into the second field edge side groove part 42 of the second field edge member 34, and the second Is engaged with the inner surface of the second field edge side edge 43 along the longitudinal direction (X direction in the drawing) of the second field edge member 34, so that the second field edge member 34 is engaged. The second rim side groove 42 is slidably held.

  An annular portion 54 is formed in the female engagement portion 45 of the field edge mounting bracket 37 attached to the first field edge member 33 or the second field edge member 34, and the wire engagement hole 9, the field edge receiving member 12, or the like. The male screw portion 53 of the field edge connecting member 51 that is fastened and locked is screwed, and the field edge members 33 and 34 are connected to the field edge members 33 and 34 via the field edge mounting bracket 37. The edge receiving member 12 etc. are connected. Accordingly, even if the hanger 11 or the mounting bracket 32 is damaged due to a shake such as an earthquake, the ceiling material 20 together with the lattice body 55 is detached from the ceiling, or the field edge members 33 and 34 are separated from the field edge receiving member 12. The fall of the ceiling material 20 can be prevented.

  Thus, according to the present invention, in any construction using the suspension bolt 19, the wire rope can be connected as an oblique material for preventing the fall, and without providing a special connection fitting to the wire rope, This has a beneficial effect such that a general wire rope can be connected by a normal operation.

  As described above, this embodiment corresponds to claim 1 and includes a narrow portion 18 that can be tightly attached to a male screw member 19 such as a suspension bolt, and one of the narrow portions 18 that extends. An A support piece 1 as a first support piece and a B support piece 3 as a second support piece provided by extending the other of the narrowing portions 18 are provided in the A support piece 1. The protruding portion 2 as the locking portion is locked in the hooking hole 4 as the locking receiving portion provided in the B support piece 3, the narrow portion 18 is fastened to the suspension bolt 19, and the protruding portion 2 is hooked. An arc portion 8A as a gap is formed between the A support piece 1 and the B support piece 3 in a state of being locked in the hole 4, and provided in one of the first connecting members 13 inserted through the arc portion 8A. A retaining member 15 as a retaining portion is supported on the upper part of the A supporting piece 1 and the B supporting piece 3, and the lower part of the A supporting piece 1 and the B supporting piece 3 is removed. For wire engagement as an attachment portion to which one of the second connecting members 13 can be attached to the distal end side of the A support piece 1 and / or the B support piece 3. Provided with a hole 9, various devices 16, 17, a field edge receiving member 12 as a ceiling base material, field edge members 33, 34, etc. are connected to the other of the first connection member 13 and the second connection member 13. doing.

  In this case, the drop prevention fitting can be attached to the suspension bolt 19 without the need for a bolt or a nut by locking the projection 2 to the hook hole 4 and tightening the narrow portion 18 to the suspension bolt 19. Further, by providing the wire protection bent portion 7, the first connecting member 13 attached to the arc portion 8 </ b> A of the A support piece 1 and the B support piece 3 is formed by the lower portions of the A support piece 1 and the B support piece 3. Abrasion and damage can be prevented. Furthermore, by attaching the first connecting member 13 and the second connecting member 13 to the fall prevention fitting, it is possible to prevent a plurality of various devices, ceiling base materials, and the like from falling.

  Further, this embodiment corresponds to claim 2, wherein the male screw member is a suspension bolt 19 for a ceiling base material, a suspension bolt 19 for a building facility, and the like, and the fall prevention fitting is screwed to the suspension bolt 19. By being attached to the upper portion of the nut 30, the fall-preventing metal fitting can be easily installed on the existing ceiling bolt 19 for ceiling base material or the suspension bolt 19 for building equipment.

  Further, the present embodiment corresponds to claim 4, and the narrow portion 18 is provided with the round holes 10 which are a plurality of through holes along the longitudinal direction of the suspension bolt 19. By easily deforming along the shape of the suspension bolt 19, the bending operation of the narrow portion 18 is promoted, and the workability can be improved.

  Next, FIG. 9 shows a second embodiment of the present invention. In this figure, the same parts as those in FIGS. 1 to 8 are denoted by the same reference numerals, and detailed description of common parts is omitted. In the present embodiment, the ceiling air control port 56 and the drop-preventing metal fitting for the suspension bolt are connected via the connecting member 13.

  The air control port 56 is connected to a duct 57 piped on the ceiling at the upper part, and the lower part is installed in a mounting hole 58 formed in the ceiling member 20, and a cone (not shown) provided with air from the duct 57 in multiple layers. The anemo-type air outlet that diffuses and guides indoors through the air-conditioner), but this embodiment can also be applied to various air conditioners such as air vents, ceiling fans, and air conditioners that are made of air outlets other than the anemo-type. is there.

  As described above, even if the air control port 56 is detached from the duct 57 due to a shake such as an earthquake, the air control port 56 is suspended from the suspension bolt 19 via the connecting member 13. Can be prevented.

  10 to 12 show a third embodiment of the present invention. In this figure, the same parts as those in FIGS. 1 to 9 are denoted by the same reference numerals, and detailed description of the common parts is omitted. As shown in FIG. 10, the ceiling structure of this embodiment has a suspension bolt 19 suspended from concrete 21 that is an upper floor slab, a hanger 59 attached to the suspension bolt 19, and a hanger 59. A ceiling base material 60 assembled in a square lattice pattern at the back of the ceiling is provided.

  Here, the ceiling base material 60 is arranged in a grid pattern with a pitch of about 600 mm, for example, and a substantially square block (partition) (hereinafter referred to as a square group 61) composed of the ceiling base material 60 assembled in a grid pattern. The ceiling material 62 and the equipment plate 63 are installed.

  The ceiling base material 60 is made of a work product obtained by bending a steel plate material, a T-bar having an approximately T-shaped cross section made of an extruded aluminum material, etc., and extends in the vertical direction (X direction in the figure). And a flange-shaped horizontal piece portion 65 extending in the horizontal direction (Y direction in the figure) from the lower portion of the vertical piece portion 64.

  At the upper end of the vertical piece 64, there is provided a head 67 formed by connecting a pair of upper ridges 66, 66 extending upward and parallel to each other in the fork, and this head 67 is a hanger. 59 is formed so as to be grippable. Further, a lower protrusion 68 extending downward is formed at both ends in the width direction (Y direction in the figure) of the horizontal piece portion 65, and the upper protrusion 66 and the lower protrusion 68 are reinforced. It serves as a rib and improves the strength of the ceiling base material 60.

  The ceiling material 62 is, for example, a surface material (not shown) made of a plate material such as punching metal that covers a side surface and a lower surface of the ceiling plate in a bottomed rectangular tube shape, and a heat insulating material such as glass wool accommodated in the surface material. (Not shown), a lid member (not shown) for covering the upper surface of the heat insulating material, and a locking portion 69 extending outwardly from the outer peripheral portion of the surface material. 61 is a panel member substantially the same as 61. In addition, as the ceiling material 62, what was integrally molded in the shape which has the latching | locking part 69 with a rock wool type material or a gypsum type material etc. may be used.

  The equipment plate 63 is formed of a plate material such as aluminum or steel, and a pair of opposing sides is bent into a substantially U-shaped cross section to integrally form a convex portion 70, and its planar shape is substantially the same as the square set 61. It is the board member formed in this.

  In the present embodiment, a drop-prevention fitting for a suspension bolt attached to the suspension bolt 19, a base material-side fixture 71 attached to the ceiling base material 60, a fall-prevention fitting for the suspension bolt and a base material-side attachment 71 and a connecting member 13 for connecting to 71.

  The base material-side fixture 71 includes an annular portion 72 at the top, and the bottom of the ceiling base material 60 by fastening the fixture main body 73 and a separate presser piece 74 with fastening means 75 such as bolts and nuts at the bottom. A gripping portion 76 that can grip the portion 67 is provided, and a through-hole 77 through which a collar member (not shown) can be inserted is provided between the annular portion 72 and the gripping portion 76.

  Next, a method for attaching the base material side fixture 71 having the above configuration will be described. When the lower gripping portion 76 is gripped by the head 67 of the ceiling base material 60, the attachment of the base material side fixture 71 is completed.

  Next, a description will be given of a method of connecting the drop-preventing metal fitting for the suspension bolt and the base material side fixture 71. The annular portion 14 of the connection member 13 is inserted into the annular portion 72 of the base material side fixture 71, and the connection member 13 is inserted. Is fastened to the annular portion 72 of the base material side fixture 71, and when the retaining member 15 or the annular portion 13B is locked to the drop-proof fitting for the suspension bolt, The connection of the base material side fixture 71 is completed.

  Even when the ceiling base material 60 suspended from the hanger 19 via the hanger 59 is detached from the hanger 59 due to shaking such as an earthquake, the drop preventing bracket for the hanger bolt and the base by the connecting member 13 are provided. By the connection of the material side fixture 71, the ceiling base material 60 is suspended and held by the suspension bolts 19, and the ceiling base material 60 can be prevented from falling.

  Furthermore, by making the connecting member 13 a flexible wire rope, the degree of freedom in construction is improved, and also in the connecting method, one annular portion 14 of the connecting member 13 is tied to the annular portion 72 of the base material side fixture 71. By attaching the other retaining portion 15 or the annular portion 13B of the connecting member 13 to the hanging bolt fall prevention fitting, the hanging bolt fall prevention fitting and the base material side mounting tool 71 can be obtained. Can be connected.

  Next, FIGS. 13 to 23 show a fourth embodiment of the present invention. In this figure, the same parts as those in FIGS. 1 to 12 are denoted by the same reference numerals, and detailed description of the common parts is omitted. The ceiling structure of the present embodiment includes a ceiling base material 60 (hereinafter, referred to as one ceiling base material 60A) arranged in parallel to the Y direction, which is a predetermined direction, in the square set 61, and orthogonal to the Y direction in the horizontal direction. The connecting portion side mounting tool 78 is provided that is attached in the vicinity of the connecting portion J assembled with the ceiling base material 60 (hereinafter referred to as the other ceiling base material 60B) arranged in parallel with the Z direction.

  The connection portion side fixture 78 includes one fixing portion 79 fixed to one of the one ceiling base material 60A and the other ceiling base material 60B, and the one ceiling base material 60A and the other ceiling base material 60B. The other fixed part 80 fixed to either one of the ceiling base materials 60 </ b> B, and a pressing part 81 capable of facing the ceiling material 62 from above are provided.

  The one fixing portion 79 is one engagement member formed to be freely engageable with either the one ceiling base material 60A or the other ceiling base material 60B adjacent to the connection portion J of the square set 61. A stop 82 is provided.

  The one locking portion 82 includes one inner side surface portion 84 formed by bending one end of a connection portion side fixture body 83 made of a plate material such as aluminum or steel upward, and the upper end of the one inner side surface portion 84. The top surface portion 85 is formed by bending in the horizontal direction, and the one outer surface portion 86 is formed by bending the outer end of the one top surface portion 85 downward. Is.

  The other fixing portion 80 is formed by the one ceiling base material 60A and the other ceiling base material 60B adjacent to either one of the ceiling base material 60A and the other ceiling base material 60B with the connecting portion J interposed therebetween. The other locking portion 87 is formed so as to be freely locked to either one.

  The other locking portion 87 is formed by bending the other inner side surface portion 88 formed by bending the other end of the connection portion side fixture body 83 upward and the upper end of the other inner side surface portion 88 by bending in the horizontal direction. The other top surface portion 89 and the other outer surface portion 90 formed by bending the outer end of the other top surface portion 89 downward are formed by bending upward.

  Here, the one locking portion 82 and the other locking portion 87 are locked to the one ceiling base material 60A and the other ceiling base material 60B, respectively, and one inner side surface portion 84 and the other inner side surface portion. 88, one outer surface portion 86 and the other outer surface portion 90, one top surface portion 85 and the other top surface portion 89 are formed to be able to face the pair of upper ridges 66 and 66 and the head 67 of the ceiling base material 60, respectively. Has been.

  Also, one inner side surface portion 84 and one outer side surface portion 86 of one locking portion 82 are orthogonal to the other inner side surface portion 88 and the other outer side surface portion 90 of the other locking portion 87. Thus, the one locking portion 82 and the other locking portion 87 are formed so as to be freely locked to one ceiling base material 60A and the other ceiling base material 60B that are orthogonal to each other.

  One locking portion 82 and the other locking portion 87 have predetermined intervals K1, K2 (K1> K2) from the connection portion J, and are locked to one ceiling base material 60A and the other ceiling base material 60B. It is prepared freely. Therefore, the connection portion side fixture 78 has one ceiling foundation material 60A and the other ceiling foundation material 60B in a direction that is neither parallel nor orthogonal to either the one ceiling foundation material 60A or the other ceiling foundation material 60B. It is the structure erected between.

  Further, when one locking portion 82 is locked to one ceiling base material 60A or the other ceiling base material 60B, the longitudinal direction of one ceiling base material 60A or the other ceiling base material 60B (Y direction in the figure). Alternatively, the dimension of the one locking portion 82 along the Z direction) is defined as a dimension K3.

  Similarly, when the other locking portion 87 is locked to one ceiling base material 60A or the other ceiling base material 60B, the longitudinal direction of one ceiling base material 60A or the other ceiling base material 60B (in the figure, Y The dimension of the other locking part 87 along the direction or the Z direction is defined as a dimension K4.

  Here, the interval K1 is formed to be larger than the total size of the interval K2 and the dimension K4 (K1> K2 + K4), and one ceiling base material of four square sets 61 adjacent to each other with a predetermined connection portion J as the center. When a plurality of connection portion side fixtures 78 are disposed on the predetermined connection portion J side of 60A and the other ceiling base material 60B, the predetermined connection portion J of one ceiling base material 60A or the other ceiling base material 60B is provided. One locking portion 82 and the other locking portion 87 of the plurality of connection portion side fixtures 78 locked to the side are the longitudinal direction (Y direction) of one ceiling base material 60A or the other ceiling base material 60B. (Or in the Z direction) so that they do not overlap each other.

  A first fixing screw hole 91 is formed on one inner side surface portion 84 of the one locking portion 82, and the first screw member 92 is inserted into the first fixing screw hole 91 with a first spring. A pair of upper protrusions 66, 66 are horizontally held between the tip end portion of the first screw member 92 and the inner surface of one outer surface portion 86 by screwing them through a washer 92A, thereby fixing one of them. The portion 79 is structured to be fixed to one ceiling base material 60A.

  A second fixing screw hole 93 is formed in one outer surface 86 of the one locking portion 82, and the second screw member 94 is inserted into the second fixing screw hole 93. The pair of upper ridges 66, 66 are horizontally held between the distal end portion of the second screw member 94 and the inner surface of one inner side surface portion 84 by being screwed together via the spring washer 94A. The fixing portion 79 is fixed to one ceiling base material 60A.

  Similarly, a third fixing screw hole 95 is also formed in the other inner side surface portion 88 of the other locking portion 87, and the third screw member 96 is inserted into the third fixing screw hole 95. 3 and a pair of upper ridges 66, 66 in the horizontal direction between the distal end portion of the third screw member 96 and the inner surface of the other outer surface portion 90. The other fixing portion 80 is fixed to the other ceiling base material 60B.

  Further, a fourth fixing screw hole 97 is formed in the other outer surface 90 of the other locking portion 87, and the fourth screw member 98 is inserted into the fourth fixing screw hole 97. The pair of upper protrusions 66, 66 are horizontally held between the tip end portion of the fourth screw member 98 and the inner surface of the other inner side surface portion 88 by screwing them through the spring washer 98A. The fixing portion 80 is fixed to the other ceiling base material 60B.

  The pressing portion 81 is formed by bending a substantially central portion of the connection portion side fixture body 83 into a downwardly convex shape, and the lower surface of the pressing portion 81 is formed substantially parallel to the upper surface of the ceiling material 62. It is.

  Further, a fifth fixing screw hole 99 is formed at a substantially central portion of the pressing portion 81, and the male screw portion 53 of the field edge connecting member 51 or the fifth fixing screw hole 99 is formed in the fifth fixing screw hole 99. 5 screw members 100 are screwed together from above via a fifth spring washer 100A so that the male screw portion 53 of the field edge connecting member 51 or the tip of the fifth screw member 100 and the side of the ceiling base material 60 By holding the ceiling material 62 in the vertical direction with the one piece 65, the pressing portion 81 holds the ceiling material 62 from above.

  Further, between the first locking portion 82 and the pressing portion 81 and between the second locking portion 87 and the pressing portion 81, the first locking portion 82 and the second locking portion are respectively provided from the pressing portion 81. A first stepped portion 101 and a second stepped portion 102 formed in an upward staircase shape toward the locking portion 87 are formed.

  The first step portion 101 extends in a horizontal direction from a first standing wall portion 103 formed by bending one end of the pressing portion 81 upward, and from the upper end of the first standing wall portion 103 to one inner side surface portion 84. And a first flat surface portion 104 on which a groove steel 203 to which a recumbent member 201 having a digestion device 200 such as a sprinkler head can be attached via a mounting bracket 202 can be placed.

  The second stepped portion 102 extends in the horizontal direction from a second standing wall portion 105 formed by bending the other end of the pressing portion 81 upward, and from the upper end of the second standing wall portion 105 to the other inner side surface portion 88. And a second flat surface portion 106 on which the grooved steel 203 can be placed.

  Here, the first lower wall 107 surrounded by the first standing wall portion 103 and the first flat surface portion 104 in the first stepped portion 101 and the second standing wall portion 105 and the second in the second stepped portion 102. Both of the second lower spaces 108 surrounded by the flat surface portion 106 are provided with the convex portions 70 of the equipment plate 63 so that the first step portions 101 and the second step portions 102 can be arranged. The lower portions of the first flat portion 104 and the second flat portion 106 are opposed to and supported by the upper portions of the convex portions 70 arranged in the lower space 107 and the second lower space 108. ing.

  The first flat surface portion 104 includes a first fixing through portion 110 for fixing the groove steel 203 and the first flat surface portion 104 by a first fixing means 109 such as a screw or a rivet. In addition, a second fixing penetrating portion 112 for fixing the groove steel 203 and the second flat surface portion 106 to the second flat surface portion 106 also by the second fixing means 111 such as a screw or a rivet. It has.

  As described above, when the ceiling base material 60 suspended from the hanger 19 via the hanger 59 is detached from the hanger 59 due to shaking such as an earthquake, the hanger bolt for the hanger bolt 51 is used. The ceiling base material 60 is suspended and held by the suspension bolts 19 by the connection of the fall prevention metal fitting and the connection portion side mounting tool 78, and the ceiling base material 60 can be prevented from falling.

  24 to 28 show a fifth embodiment of the present invention. In this figure, the same parts as those in FIGS. 1 to 23 are denoted by the same reference numerals, and detailed description of the common parts is omitted. The drop-preventing metal fitting for the suspension bolt according to the present embodiment includes a screw groove 120 inside the narrowed portion 18, and through holes through which the bolts 121 can be inserted in the central portions of the A support piece 1 and the B support piece 3. Part 122 is provided. The A support piece 1 is provided with a locking part 123 on the tip side opposite to the clamping part 18 side, and the B support piece 3 has a locking part on the tip side opposite to the clamping part 18 side. The latch receiving part 124 which can be stopped is provided.

  As described above, the drop-preventing metal fitting for the suspension bolt according to the present embodiment includes the screw groove portion 120, so that when the narrow portion 18 is tightly attached to the suspension bolt 19, the screw groove portion 120 of the narrow portion 18. And the screw groove of the suspension bolt 19 are engaged with each other, and the fall prevention fitting for the suspension bolt is prevented from sliding in the axial direction of the suspension bolt 19, and the fall prevention fitting for the suspension bolt is stabilized to the suspension bolt 19. Attached.

  Further, in a state where the suspension bolt 19 is tightened in the narrow portion 18, a nut (not shown) is screwed to the bolt 121 inserted through each through portion 122 of the A support piece 1 and the B support piece 3. Thus, the tightly attached state of the narrowed portion 18 to the suspension bolt 19 is maintained, and the suspension bolt 19 is reliably attached to the drop-preventing metal fitting for the suspension bolt. Moreover, if the annular portion 13B of the connecting member 13 is locked to the bolt 121, the connecting member 13 can be connected to a drop-preventing metal fitting for the suspension bolt.

  Further, by locking the locking portion 123 of the A support piece 1 to the locking receiving portion 124 of the B support piece 3, the tightly attached state of the narrowed portion 18 to the suspension bolt 19 is maintained. The mounting to the drop-proof bracket for the suspension bolt is further ensured.

  As described above, this embodiment corresponds to claim 5, and the screw groove portion 120 is provided on the inner surface of the narrow portion 18 as a screw groove that can be screwed to the suspension bolt 19. Since the inner surface is screwed into the male screw member, the narrow portion narrowly attached to the male screw member is prevented from sliding along the longitudinal direction of the male screw member, and the installation of the fall prevention metal fitting is stabilized.

  Further, this embodiment corresponds to claim 6, and the bolt 121 is used as a holding means for connecting the A support piece 1 and the B support piece 3 and holding the protruding portion 2 in a state of being locked in the hooking hole 4. The third connecting member 13 is attached to the bolt 121, and various devices 16 and 17 are connected to the other of the third connecting member 13.

  In this case, since the locking state between the protrusion 2 and the hook hole 4 is maintained by the bolt 121, the tightening of the narrow portion 18 to the suspension bolt 19 is stabilized, and the installation of the fall prevention metal fitting is further stabilized. By attaching the third connecting member 13 to the bolt 121, the first connecting member 13 and the second connecting member 13 together with the plurality of various devices 16, 17 and the field members 33, 34 as the ceiling base material are dropped. Can be prevented.

  FIG. 29 shows a sixth embodiment of the present invention. In this figure, the same parts as those in FIGS. 1 to 28 are denoted by the same reference numerals, and detailed description of the common parts is omitted. In this embodiment, the structure is such that the drop-preventing metal fitting for the suspension bolt is attached not to the suspension bolt 19 but to the bolt 131 screwed to the insert fitting 130 embedded in an arbitrary position of the concrete 21.

  As described above, when the insert fitting 130 is installed at an arbitrary position of the concrete 21 and the bolt 131 is screwed to the insert fitting 130, the drop-proof fitting for the suspension bolt is made into the concrete via the insert fitting 130 and the bolt 131. It becomes possible to install in 21 arbitrary positions.

  As described above, this embodiment corresponds to the third aspect, and the male screw member is the bolt 131 screwed to the insert hardware 130 embedded in the concrete 21 serving as the ceiling slab, whereby the concrete 21 The fall prevention metal fitting can be installed at any position.

  The present invention is not limited to the above embodiments, and various modifications can be made within the scope of the gist of the present invention.

DESCRIPTION OF SYMBOLS 1 A support piece 2 Protrusion 3 B support piece 4 Hook hole 5 Wire hook part 7 Wire protection bending part 9 Wire engagement hole 10 Round hole 13 Connecting member 15 Retaining member 18 Narrow part 19 Suspension bolt 30 First Nut 120 Screw groove 130 Insert metal fitting 131 Bolt

Claims (6)

A constricted portion that can be constricted to a male screw member such as a suspension bolt;
A first support piece provided by extending one of the narrowing portions;
A second support piece provided to extend the other of the narrow part,
The locking portion provided in the first support piece is locked to the lock receiving portion provided in the second support piece, and the narrow portion is fastened to the male screw member,
In a state where the locking portion is locked to the locking receiving portion,
A gap is formed between the first support piece and the second support piece,
A retaining portion provided on one of the first connecting members inserted through the gap is supported on the top of the first support piece and the second support piece,
A protective portion in which the lower portions of the first support piece and the second support piece are bent outward;
An attachment portion to which one of the second connecting members can be attached to the distal end side of the first support piece and / or the second support piece;
A fall-preventing metal fitting, wherein various devices, ceiling base materials, and the like are connected to the other of the first connecting member and the second connecting member.   The male screw member is a suspension bolt for a ceiling base material, a suspension bolt for a building facility, or the like, and the fall prevention metal fitting is attached to an upper portion of a nut screwed to the male screw member. The fall prevention metal fitting of 1.   The fall prevention metal fitting according to claim 1, wherein the male screw member is a bolt screwed to an insert hardware embedded in a ceiling slab.   The fall prevention metal fitting according to any one of claims 1 to 3, wherein the narrow portion includes a plurality of through holes along a longitudinal direction of the male screw member.   The fall prevention metal fitting according to any one of claims 1 to 4, wherein a screw groove that can be screwed onto the male screw member is provided on an inner surface of the narrowing portion. Holding means for connecting the first support piece and the second support piece and holding the locking portion in a state of being locked to the locking receiving portion;
Attach one of the third connecting members to the holding means,
The fall prevention metal fitting according to any one of claims 1 to 5, wherein various devices are connected to the other of the third connecting members.

Images