JP2012117303A - Vibration-proof structure for ceiling - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fall prevention structure which prevents a ceiling backing material from falling when a hanger member connecting a hanging bolt to the ceiling backing material is damaged due to an earthquake or the like.SOLUTION: A fall prevention structure 1 prevents the ceiling backing material of a ceiling structure from falling, the ceiling structure comprising a hanging bolt 7 suspended from a ceiling 6 and a hanger member 8 suspending and holding the ceiling backing material, a lattice body 10, to the hanging bolt 7. The fall prevention structure comprises a fitting 18 capable of attaching to the hanging bolt 7 and connection means 19 connecting the fitting 18 to a ceiling joist retainer member 9 constituting the lattice body 10 so as to make the fall prevention structure 1 into a simple and easily mountable structure. Consequently, the lattice body 10 and a ceiling panel 11 are prevented from falling, the workability and safety of the fall prevention structure 1 can be improved, and also the fall prevention structure 1 can be applicable to an existing ceiling structure.

Description

  The present invention relates to a fall prevention structure for a ceiling base material suspended and held from a ceiling.

  For example, a ceiling structure is known in which a ceiling base material with a ceiling panel attached to a lower part is supported by a hanger member attached to a suspension bolt that is a suspended member suspended from the ceiling (Patent Document). 1).

JP 2010-229785 A

  In the ceiling structure described in Patent Document 1, when the force generated by an earthquake or the like is transmitted from the ceiling panel to the hanger member connecting the ceiling base material and the suspension bolt via the ceiling base material, the hanger member is damaged, There was a problem that the ceiling base material might fall.

  Therefore, the present invention solves the above-described problems, and provides a fall prevention structure that prevents the ceiling base material from falling against damage to a hanger member that connects the suspension bolt and the ceiling base material due to an earthquake or the like. With the goal.

  The fall prevention structure of the invention of claim 1 is a dropping of the ceiling base material of the ceiling structure comprising a hanging member suspended from the ceiling and a hanger member that suspends and holds the ceiling foundation material on the hanging member. A fall prevention structure for preventing the above-mentioned problem, comprising: an attachment member that can be attached to the hanging member; and a connecting means that connects the attachment member and the ceiling base material.

  The fall prevention structure of the invention of claim 2 is characterized in that the connecting means is detachably provided on the mounting member.

  The fall prevention structure of the invention of claim 3 is characterized in that a wire is used for the connecting means.

  According to the invention of claim 1, by making the fall prevention structure simple and easy to install, the ceiling base material can be prevented from falling, and the workability and safety of the fall prevention structure can be improved. The fall prevention structure applicable also to the existing ceiling structure can be provided.

  According to the invention of claim 2, by making the connecting means detachable from the attachment member, it is easy to attach the connecting means to the ceiling base material, and the workability of the fall prevention structure can be further improved.

  According to the invention of claim 3, the attachment of the connecting means to the ceiling base material is further facilitated, and the connection between the mounting member and the ceiling base material via the connecting means is strengthened, and the workability of the fall prevention structure is improved. Safety can be further improved.

It is sectional drawing of the fall prevention structure in 1st Example of this invention. It is a perspective view which shows a suspension bolt vicinity same as the above. It is a perspective view of a field edge holder same as the above. It is a perspective view which shows the state which attached the 1st field edge member to the field edge holder same as the above. It is a perspective view which shows the state which attached the 2nd field edge member to the field edge holder same as the above. It is sectional drawing which shows the state which attached the 1st field edge member to the field edge holder same as the above. It is sectional drawing which shows the state which attached the 2nd field edge member to the field edge holder same as the above. It is a perspective view of a field edge side coupling body same as the above. It is a perspective view which shows the use condition of a field edge holder same as the above. It is a perspective view which shows the modification of a present Example same as the above. It is a perspective view which shows the suspension bolt vicinity in 2nd Example of this invention.

  FIGS. 1-10 shows 1st Example of the fall prevention structure 1 of this invention, and when an example of the suspended ceiling structure to which the fall prevention structure 1 of this embodiment is applied is shown, it follows each longitudinal direction. A plurality of field members 4, 5 made of channel steel having a substantially C-shaped cross-section with field edge side grooves 2, 3 formed as groove parts, and suspension bolts 7, which are suspended members suspended from the ceiling 6. A steel base material for ceiling (hereinafter referred to as a ceiling base material) is obtained by integrating a field receiving member 9 made of channel steel having a substantially C-shaped cross section connected through a hanger member 8 as a lowering means. And a ceiling panel 11 made of a plaster board, a panel, or the like is attached to the lower surface of the field edge member 2 with screws or the like, and the fall prevention of the present invention Structure 1 can be applied to ceiling structures other than the suspended ceiling structure of this embodiment A.

  Here, the hanger member 8 is formed by bending the upper end of the substantially vertical hanger body 12 substantially vertically and having a first hanging member insertion through portion 13 through which the suspension bolt 7 can be inserted. 14 and a plate member made of metal such as stainless steel or aluminum, which is provided with a field edge receiving attachment portion 15 which is formed by bending the lower end of the hanger body 12 into an upward hook shape and can lock the field edge receiving member 9 Is bent into a substantially S shape.

  The hanging member attaching portion 14 is in the axial direction of the hanging bolt 7 by nuts 16 and 17 screwed to the hanging bolt 7 in a state where the hanging bolt 7 is inserted into the first penetrating member insertion through portion 13. The hanger member 8 is suspended and held so that its position can be adjusted in the axial direction of the suspension bolt 7 by being clamped and fixed from above and below.

  And the fall prevention structure 1 of a present Example is the attachment bracket 18 which can be attached to the suspension bolt 7, and the connection means 19 which connects this attachment bracket 18 and the field edge receiving member 9 which is a structural member of a ceiling base material, It has composition which has.

  The mounting bracket 18 is formed by bending a metal plate such as stainless steel, aluminum or the like into a substantially L-shaped cross section, and a second bolt 20 can be inserted into the one portion 20 of the L-shape. The penetrating member penetrating portion 21 is provided, and the other piece portion 22 is provided with a connecting means penetrating portion 23 that allows the connecting means 19 to be detachably attached.

  The connecting means 19 includes a bolt 24 and a wire 25 inserted through the bolt 24 and attached. The connecting means through portion 23 is formed in a screw hole in which a screw groove into which the bolt 24 can be screwed is formed.

The bolt 24 is provided with a wire penetration portion 28 continuously formed from the head portion 26 to the shaft portion 27 in which a thread groove is formed along the central axis direction of the bolt 24.
Further, a retaining member 29 having a diameter larger than that of the wire penetrating portion 28 is attached to one end of the wire 25.

  Further, the other end of the wire 25 is looped back at the tip of the wire 25, and the tip and the middle portion of the wire 25 are formed in a metal tube having a larger diameter than the through-hole 28 for wire. An annular portion 31 that is fixedly formed by the tool 30 is provided.

  In this embodiment, the width is defined as two types of field members having different widths H1 and H2 in the short direction (Y direction in the figure) which is a direction orthogonal to the longitudinal direction (X direction in the figure) and the horizontal direction. A wide first field edge member 4 set large and a narrow second field edge member 5 set small in width are used. Here, the width H1 of the first field edge member 4 is set to be approximately twice the width H2 of the second field edge member 5.

  The field edge holder 32 which forms the grid body 10 which is the ceiling base material by integrating the field edge members 4 and 5 and the field edge receiving member 9 is a thin plate made of a metal such as stainless steel or aluminum formed in a square shape. The lower part of the holder main body 33 is made of a first field edge side both side edge portion 34 formed in a substantially J-shaped cross section of the first field edge side groove portion 2 of the first field edge member 4. 1st field edge attaching part 35 and the 2nd field edge side both side edge part 36 formed in the cross-sectional substantially J type of the 2nd field edge side groove part 3 of the 2nd field edge member 5 are engageable. A field edge mounting portion 37 is provided.

  In addition, a receiving member mounting portion 38 that holds the field edge receiving member 9 and fixes the field edge receiving member 9 is provided on the upper portion of the holder main body 33.

  The first field edge mounting portion 35 is raised substantially in parallel from a pair of opposite end portions 39 and 39 of the holder main body 33 and can be inserted into the first field edge side groove portion 2 of the first field edge member 4. A pair of first raised portions 40 and the tips of the first raised portions 40 are bent outwardly to form a substantially J-shaped cross section so as to be separated from each other. A first lock that is provided on the inner surface of the first rim member so as to be engageable along the longitudinal direction (X direction in the figure) and that slidably holds the first field edge member 4 along the first field edge side groove 2. A part 41 is provided.

  The receiving member mounting portion 38 is raised vertically upward from the pair of both end portions and the other end portion of the holder body 33 orthogonal to the horizontal direction so as to be substantially parallel to the direction opposite to the first raising portion 40. The receiving member side rising portion 42 and the upper end of the receiving member side rising portion 42 are extended in a substantially horizontal direction, and are formed parallel to the holder body 33 and are opposed to the upper surface of the holder body 33 And a receiving member side locking portion 44 formed by bending the tip of the sandwiching portion 43 in accordance with the shape of the side surface of the field receiving member 9.

  Further, the receiving member mounting portion 38 is a fastening means 45 for fastening the receiving member side rising portion 42 and the field edge receiving member 9 to the mounting side through portion 42A formed in the receiving member side rising portion 42 and the field edge. The first bolt 46 as a first male screw portion that can be inserted into the receiving member side through portion 9A formed in the receiving member 9, and the mounting side through portion 42A and the receiving member side from the outer surface of the receiving member side rising portion 42 A first nut 47 is provided as a first female screw portion that can be screwed to the first bolt 46 inserted through the penetration portion 9A from the inside of the field receiving member 9. Here, the first nut 47 may be fixed to the receiving member side rising portion 42 or may be separated from the receiving member side rising portion 42. Further, as the first female screw portion, a screw groove into which the first bolt 46 can be screwed is inserted into either one or both of the attachment side through portion 42A and the receiving member side through portion 9A. It doesn't matter. Further, the first bolt 46 and the first nut 47 are preferably attached to the attachment side through portion 42A or the receiving member side through portion 9A via the washer members 46A and 47A made of soft rubber.

  Further, the receiving member mounting portion 38 has a clamping mechanism 48 that is formed at a substantially central portion of the clamping portion 43 as a clamping mechanism 48 that can clamp the field receiving member 9 by the lower surface of the clamping portion 43 and the upper surface of the holder body 33. A second bolt 51 as a second male screw part that can be inserted into the body side through part 50 formed in the substantially central part of the part side through part 49 and the holder body 33, and the clamping part side from above the clamping part 43 A second nut 52 is provided as a second female screw portion that can be screwed into the second bolt 51 inserted through the through portion 49 and the main body side through portion 50 from below the holder main body 33. Here, the second nut 52 may be fixed to the holder main body 33 or may be separated from the holder main body 33. Further, as the second female screw portion, a screw groove into which the second bolt 51 can be screwed is inserted into either one or both of the sandwiching portion side through portion 49 and the main body side through portion 50. It doesn't matter. Furthermore, it is preferable that the second bolt 51 and the second nut 52 are respectively attached to the sandwiching part side through part 49 or the main body side through part 50 via soft rubber washer members 51A and 52A.

  In the tightening mechanism 48, the first annular portion 53 provided on the head of the second bolt 51, one is connected to the first annular portion 53, and the other is connected to the ceiling 6. Thus, a first wire 54 is provided as a vibration preventing means for connecting the ceiling 6 and the first annular portion 53.

  Furthermore, the above-mentioned receiving member side locking portion 44 has both ends of the distal end portion of the sandwiching portion 43 defined by two slits 55, 55 formed in parallel from the distal end portion to the intermediate portion of the sandwiching portion 43, It is formed by bending downward.

  The second field edge mounting portion 37 is raised substantially in parallel with the first rising portion 40 between the first rising portions 40, 40 of the holder body 33 and the first rising portion 40. , 40 and a pair of second rising portions 56, 56 that can be inserted into the second field-side groove 3, and each of the second rising portions 56, 56. The front edges of the second field edges are bent outward so as to be separated from each other, and can be engaged with the inner surfaces of the second field edge sides 14 along the longitudinal direction (X direction in the figure). A second locking portion 57 that holds the member 5 slidably along the second field-side groove portion 3 is provided.

  Here, each 1st raising part 40,40 is formed so that it may incline so that a mutual distance may approach from the base end of the holder body 33 side to the front end of the 1st latching | locking part 41 side, Similarly, for the third rising portions 40, 40 and the second rising portions 56, 56, the third locking portions 41, 41 and the second locking portions 57, It is formed to be inclined so that the distance from each other approaches the tip on the 57 side.

  Further, in the present embodiment, as the field edge side connecting portion 58, a first similar to the field edge holder 32 is formed at the lower part of a connecting body 59 made of a thin metal plate such as stainless steel or aluminum formed in a square shape. A third bolt 60 as a third male screw part, which includes a field edge mounting part 35 and a second field edge mounting part 37, and can be inserted into a through part 59A formed in the central part of the connecting body 59; The third bolt 60 is provided with a third nut 61 as a third female screw portion capable of screwing the third bolt 60 from the lower surface of the connecting body main body 59. An annular portion 62 is provided at one end of the head of the third bolt 60. A wire member 63 provided with is attached. Here, the third nut 61 may be fixed to the connecting body 59 or may be separated from the connecting body 59. Further, as the third female screw portion, a screw groove into which the third bolt 60 can be screwed may be screwed into one or both of the through portion 42C and the through portion 59A. . Furthermore, it is preferable that the third bolt 60 and the third nut 61 are respectively attached to the penetrating portion 59A via soft rubber washer members 60A, 61A.

  Next, the effect | action is demonstrated about the said structure. First, a method of connecting the mounting bracket 18 and the field edge receiving member 9 will be described. With the bolt 24 removed from the mounting bracket 18, the bolt 24 is inserted into the annular portion 31 to form the annular body 25 </ b> A with the wire 25. Then, when the field edge receiving member 9 is inserted into the annular body 25A and the bolt 24 is screwed into the wire penetration portion 28 of the mounting bracket 18, the connection between the mounting bracket 18 and the field edge receiving member 9 is completed.

  Next, a method for connecting the mounting bracket 18 and the suspension bolt 7 will be described. With the mounting bracket 18 disposed between the nuts 16, 17 and the hanging member mounting portion 14 of the hanger member 8, the suspension bolt 7 is inserted into the second penetrating member penetration portion 21 of the mounting bracket 18, Is attached to the hanger member 8 together with the hanger member 8 in the axial direction. When suspended and held so that the position can be adjusted, the attachment of the mounting bracket 18 and the suspension bolt 7 is completed.

  Next, a method of assembling the lattice body 10 as the ceiling base material by integrating the first field edge member 4 and the field edge receiving member 9 will be described. The first rising portion 40 of the field edge holder 32 is inserted into the first field edge side groove portion 2 of the first field edge member 4, and the first locking portions 41 are both the first field edge side edges. The first field edge member 4 is slidable along the first field edge side groove portion 2 by engaging with the inner surface of 34 along the longitudinal direction (X direction in the figure) of the first field edge member 4. Hold.

  Further, the field edge receiving member 9 is inserted into a space defined in a U-shape by the receiving member side rising part 42, the holding part 43, and the holder body 9, and the upper surface part of the field edge receiving member 9 and After the lower surface portions are opposed to the lower surface of the holding portion 43 of the receiving member mounting portion 38 and the upper surface of the holder main body 33, the edge receiving member is tightened by the first bolt 46 and the first nut 47 as the fastening means 45. 9 is fixed to the receiving member side rising portion 42, and the upper and lower surfaces of the field receiving member 9 are tightened by tightening the second bolt 51 and the second nut 52 as the tightening mechanism 48. The holding part 43 is sandwiched between the lower surface of the clamping part 43 and the upper surface of the holder body 33, and the distal end of the clamping part 43 is bent to form a receiving member side locking part 44. The edge receiving member 9 is fixed to the receiving member mounting portion 38 by being engaged with the side surface of the field receiving member 9.

  In this way, the first grid member 10 is assembled by making the first field edge member 4 and the field edge receiving member 9 orthogonal to each other via the field edge holder 32, and the first field edge member 4 is assembled. A ceiling panel 11 is attached to the lower surface portion of the.

  Here, when assembling the grid body 10 which is the ceiling base material by integrating the second field edge member 5 and the field edge receiving member 9, the second rising portion 56 of the field edge holder 32 is set to the first. The second field edge member 5 is inserted into the second field edge side groove 3 of the second field edge member 5 and the second locking portion 57 and the second field edge both side edges 14 are engaged with each other. The integrated lattice body 10 is assembled by holding the second field edge member 5 and the field edge receiving member 9 perpendicularly to each other while holding the second field edge side groove 3 slidably. A ceiling panel 11 is attached to the lower surface portion of the field edge member 5. Whether the first field edge member 4 or the second field edge member 5 is used when assembling the lattice body 10 can be appropriately changed according to the weight of the ceiling panel 11 attached to the lower surface of the lattice body 10. And

  As described above, the mounting bracket 18 attached to the suspension bolt 7 and the field edge receiving member 9 which is a constituent member of the ceiling base material are connected using the wire 25, so that the ceiling panel 11 The load concentrates on the hanger member 8 via the lattice body 10 which is a ceiling base material in which the field edge members 4 and 5 and the field edge receiving member 9 are firmly integrated by the field edge holder 32, and the hanger member 8 The hanger body 12 and the field edge mounting portion 15 are broken, or the locking state between the field edge mounting portion 15 and the field edge receiving member 9 is released, and the field edge receiving member 9 is lowered from the suspension bolt 7. Since the field receiving member 9 is suspended and held by the suspension bolt 7 by the wire 25 of the fall prevention structure 1 in the event of an unexpected situation, the field receiving member 9 is prevented from falling.

  In addition, the mounting bracket 18 of the fall prevention structure 1 can be attached to the suspension bolt 7 of the existing ceiling structure only by fixing the hanger 8 together with the hangers 8 with the nuts 16 and 17, thereby improving the workability by shortening the work time, The construction cost can be reduced by utilizing the existing ceiling structure.

  As described above, the present embodiment corresponds to claim 1, and the suspension bolt 7 that is suspended from the ceiling 6, and the lattice body 10 that is the ceiling base material is suspended and held on the suspension bolt 7. A drop prevention structure 1 for preventing a ceiling base material of a ceiling structure provided with a hanger member 8 to be dropped, a mounting bracket 18 as a mounting member that can be mounted to the suspension bolt 7, a mounting bracket 18 and a lattice body 10 The connection means 19 which connects the field edge receiving member 9 which comprises is provided.

  In this case, by making the fall prevention structure 1 simple and easy to install, the grid body 10 and the ceiling panel 11 can be prevented from falling, and the workability and safety of the fall prevention structure 1 can be improved. The fall prevention structure 1 applicable also to the existing ceiling structure can be provided.

  Further, this embodiment corresponds to claim 2, and the connecting means 19 is detachably provided on the mounting bracket 18 via a bolt 24.

  In this case, by making the connecting means 19 detachable from the mounting member 18, the connecting means 19 can be easily attached to the field receiving member 9 constituting the ceiling base material, and the workability of the fall prevention structure 1 is further improved. Can be made.

  Further, this embodiment corresponds to claim 3, and by using the wire 25 for the connecting means 19, the field edge constituting the ceiling base material of the connecting means 19 due to the flexibility and high workability of the wire 25. The mounting to the receiving member 9 is further facilitated, and the connection between the mounting bracket 18 and the grid body 10 that is the ceiling base material via the connecting means 19 is strengthened, further improving the workability and safety of the fall prevention structure 1. Can be improved.

  In the present embodiment, the combined use of the fall prevention structure 1 and the field edge holder 32 prevents the grid body 10 from falling and strengthens the connection between the field edge members 4 and 5 and the field edge receiving member 9 to improve the safety of the entire ceiling structure. Can be improved.

  As a modification of the present embodiment, as shown in FIG. 10, a clip 80, which is a well-known metal fitting for connecting and fixing the field edge members 4, 5 and the field edge receiving member 9, instead of the field edge holder 32, is used. The field edge members 4 and 5 and the field edge receiving member 9 are fixed to each other, and the wire member 63 attached to the head of the third bolt 60 is directly connected to the field edge receiving member 9.

  In this way, by connecting the field edge members 4 and 5 and the field edge receiving member 9 through the wire member 63, the clip 80 is damaged by shaking such as an earthquake and the like, and the field edge members 4 and 5 together with the ceiling panel 11 Even if it is detached from the field edge receiving member 9, the ceiling panel 11 can be prevented from falling.

  FIG. 11 shows a second embodiment of the present invention. Common portions with the first embodiment are denoted by common reference numerals, and description of common portions is omitted as much as possible to avoid duplication.

  In the present embodiment, the combined use of the fall prevention structure 1 and a bolt side connecting portion 64 which is another means for preventing fall of the ceiling base material is shown. A bolt side connecting portion 64 is mounted on the hanger 8 and the mounting bracket 18 (not shown in FIG. 11) of the suspension bolt 7, and the bolt side connecting portion 64 is connected to the edge side via a wire member 63. Connected to part 58.

  The bolt side connecting portion 64 includes a connecting portion main body 67 formed by bending a metal thin plate into a substantially J shape having a short piece portion 65 and a long piece portion 66, and a substantially semicircular arc-shaped folded portion of the connecting portion main body 67. When both edges are extended inward and can be engaged with the irregularities of the thread of the suspension bolt 7, the flange portion 68, the narrowed portion 69 with the central portion of the short piece 65 recessed inward, and the short piece 65 A short side through portion 70 provided on the distal end side of the narrowed portion 69, a long piece side through portion 71 provided in a substantially central portion of the long piece portion 66, and a longer side than the long piece side through portion 71 of the long piece portion 66 A long hole 72 parallel to the longitudinal direction of the piece portion 66 is provided, and a butterfly screw 73 as a fifth male screw portion that can be inserted into the short piece side penetrating portion 70 and the long piece side penetrating portion 71, and the butterfly screw 73 A fifth nut 74 is provided as a fifth female screw portion that can be screwed onto.

  Further, the long hole 72 of the connecting portion main body 67 is swingably mounted via a fifth bolt 75 as a sixth male screw portion and a sixth nut 76 as a sixth female screw portion. It has a body 77.

  The connection body 77 is a hollow metal column having a hexagonal cross section. One side of the connection body 77 has a through-hole 78 through which a fifth bolt 75 can be inserted, and the other side of the connection body 77 has a through-hole 78. It has a pair of through-holes 79 formed to communicate with each other in the diametrical direction of the connecting body 77. The wire member 63 is inserted into the pair of through-holes 79 to connect the field edge side connecting portion 58 and the bolt side connecting portion 64. ing.

  In this embodiment, by connecting the edge members 4 and 5 and the suspension bolt 7 via the wire member 63, the hanger 8 is damaged due to shaking such as an earthquake, and the ceiling panel 11 together with the lattice 10 is removed from the ceiling 6. Even if it is detached, the ceiling panel 11 can be prevented from falling.

  Further, since the connecting body 77 is provided on the suspension bolt 7 so as to be swingable, the impact applied to the wire member 63 connecting the reed 56 with the ceiling panel 11 and the suspension bolt 7 can be reduced.

  As described above, in this embodiment, by using the fall prevention structure 1 and the bolt side connecting portion 64 in combination, the grid body 10 and the ceiling panel 11 which are ceiling base materials are dropped due to damage to the hanger 8 due to shaking such as an earthquake. Can be more reliably prevented and the safety of the ceiling structure can be improved.

  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. For example, in the fall prevention structure 1, not the field edge receiving member 9, but the field edge members 4 and 5 that are also components of the ceiling base material and the connection fitting 18 may be connected by the wire 25.

1 Fall prevention structure 6 Ceiling 7 Suspension bolt (hanging member)
8 Hanger parts
10 Grid (ceiling base material)
18 Mounting bracket (Mounting member)
19 Connection means
25 wires

Claims (3)

A fall prevention structure for preventing the ceiling foundation material from falling in a ceiling structure comprising a hanging member suspended from the ceiling and a hanger member that suspends and holds the ceiling foundation material on the suspension member,
An attachment member attachable to the hanging member;
A fall prevention structure comprising connecting means for connecting the mounting member and the ceiling base material. 2. The fall prevention structure according to claim 1, wherein the connecting means is detachably provided on the attachment member. The fall prevention structure according to claim 1 or 2, wherein a wire is used for said connecting means.

Images