JP6362848B2 - Fall prevention device - Google Patents

Description

  The present invention relates to a fall prevention device for a suspended body.

  Conventionally, as a ceiling structure that is a suspended body from a roof or an upper floor slab, a substantially S-shaped shape steel is attached to a plurality of field members and suspension bolts suspended from an upper floor slab such as a concrete base. The base edge receiving member connected through a hanger made of, etc., is integrated to form a ceiling base material, and the ceiling panel is attached to the lower surface of the field edge member with screws or the like (patent There is literature 1).

JP 2007-177400 A

  However, in the conventional ceiling structure, if the ceiling structure is shaken due to shaking such as an earthquake, the anchor that fixes the suspension bolt that suspends the ceiling structure to the upper floor slab is damaged, and the ceiling structure is damaged. There was a risk of the structure falling.

  Then, an object of this invention is to provide the fall prevention apparatus which prevents the to-be-suspended body from falling.

The invention according to claim 1 is a device for preventing a suspended body from being dropped from an upper structure, and includes a base end portion attached to the upper structure side and a suspended body attached to the suspended body side. A lower-side mounting portion, and the suspended-side mounting portion is swingably provided at the base end portion via a plurality of wire members, and a plurality of first connection holes are formed at the base end portion. A plurality of second connection holes are formed in the suspended side mounting portion, the wire member connects the first connection hole and the second connection hole, and both ends of the wire member And a retaining member, wherein the retaining member is formed at a diameter smaller than the diameters of the first coupling hole and the second coupling hole, and is formed at the connection section. A retaining portion formed to have a diameter larger than the diameter of the hole and the second connecting hole. The connection portion is loosely inserted into the first connection hole and the second connection hole, so that the retaining member is relative to the base end portion and the suspended side attachment portion. It is characterized by being provided so as to be operable .

The invention of claim 2 is characterized in that the first connecting holes are formed at equal intervals, and the second connecting holes are formed at equal intervals.

According to the invention of claim 1, the ceiling structure is suspended and held by the upper structure via the fall prevention device, so that the shaking of the ceiling structure is blocked by the fall prevention device, and the ceiling structure in the upper structure is It is possible to prevent the vibration from being transmitted to the connection structure, to prevent the connection structure from being damaged by a vibration such as an earthquake, and to prevent the suspended body from falling. In addition, by arranging the fall prevention device at the connection portion between the upper structure and the ceiling structure, a compact fall prevention structure can be constructed without complicating the structure of the back of the ceiling. Further, by utilizing the flexibility of the wire member, the suspended side mounting portion is swingably connected to the base end portion, so that the suspended side mounting portion can be moved in the vertical and horizontal directions. By bending the wire member, the movement of the suspended attachment portion is prevented from being transmitted to the base end portion. Moreover, even if the number of wire members is changed according to the weight of the suspended body, it can be suspended and held in a balanced manner. Further, since the connecting portion is loosely inserted into the first connecting hole and the second connecting hole, the retaining member is provided so as to be operable relative to the base end portion and the suspended side attachment portion. For this reason, there is a margin in the operation with respect to the base end portion of the wire member and the suspended side mounting portion, and the fall prevention device can be prevented from being damaged.

According to the invention of claim 2 , even if the number of wire members is changed according to the weight of the suspended body, the first connection hole and the second connection hole are formed at equal intervals. Can be suspended in a well-balanced manner.

It is a perspective view of the fall prevention device in the 1st example of the present invention. It is sectional drawing which shows the use condition of a fall prevention apparatus same as the above. FIG. 3 is a cross-sectional view of the fall prevention device in a state where the ceiling structure in FIG. 2 is swayed in the horizontal direction. FIG. 3 is a cross-sectional view of the fall prevention device with the ceiling structure swayed in the vertical direction in FIG. It is a perspective view of the fall prevention apparatus in 2nd Example of this invention. It is an exploded perspective view of a fall prevention device same as the above. It is sectional drawing of each structure of a fall prevention apparatus same as the above. It is sectional drawing which shows the use condition of a fall prevention apparatus same as the above. FIG. 9 is a cross-sectional view of the fall prevention device in the state where the ceiling structure is shaken in the horizontal direction in FIG. FIG. 9 is a cross-sectional view of the fall prevention device in a state where the ceiling structure is shaken in the vertical direction in FIG. It is a perspective view of the fall prevention device in the 3rd example of the present invention. It is sectional drawing which shows the use condition of a fall prevention apparatus same as the above. FIG. 13 is a cross-sectional view of the fall prevention device in a state where the ceiling structure is shaken in the horizontal direction in FIG. FIG. 13 is a cross-sectional view of the fall prevention device in a state where the ceiling structure is shaken in the vertical direction in FIG. It is sectional drawing which shows the state which used the fall prevention apparatus of 2nd Example, and the fall prevention apparatus of 3rd Example simultaneously. It is sectional drawing which shows the use condition of the fall prevention apparatus in 4th Example of this invention.

  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 4 show Embodiment 1 of the present invention. When an example of a suspended ceiling structure of this embodiment is shown in FIG. 2, a plurality of field members 1 made of channel steel having a substantially C-shaped cross section are shown. And hanging hangers, etc., formed by bending a metal plate into a substantially S shape on a suspension bolt 3 as a suspended member suspended from an upper floor slab 2 such as a concrete base as an upper structure or a roof structure The field edge receiving member 5 made of a section steel having a substantially C-shaped cross section connected through the means 4 is integrated perpendicularly to each other through a bracket (not shown) to form a lattice body 6 as a ceiling base material, A ceiling panel 7 made of a plaster board, a panel, or the like is attached to the lower surface of the field edge member 1 with screws or the like.

  Next, the fall prevention device 10 installed between the upper floor slab 2 and the suspension bolt 3 will be described. The fall prevention device 10 includes a base end portion 11 fixed to the upper floor slab 2 on the ceiling back side, and a suspended side fixed to a suspended holding body such as a suspension bolt 3 suspended from the ceiling. The suspension side attachment portion 12 is pivotably connected to the base end portion 11.

  The base end portion 11 is formed in a disc shape, and the first through portion 13 is formed in the central portion. The suspended side mounting portion 12 is also formed in a disk shape, and a second through portion 14 is formed in the center portion. And the base end part 11 and the suspended side attachment part 12 are connected via the several wire member 15, and the suspended side attachment part 12 is connected to the base end part 11 so that rocking | fluctuation is possible.

  The wire member 15 includes a plurality of first connection holes 16 formed at equal intervals around the first through portion 13 of the base end portion 11 and the second through portion of the suspended side attachment portion 12. A plurality of second connection holes 17 formed at equal intervals around 14 are connected.

  At both ends of the wire member 15, a retaining member 18 is provided. The retaining member 18 is connected to the both ends of the wire member 15 at the proximal end side, and the cylindrical connecting portion 19 formed with a diameter smaller than the diameters of the first connecting hole 16 and the second connecting hole 17, and this connection A disc-shaped retaining portion 20 formed on the tip side of the portion 19 and having a diameter sufficiently larger than the diameters of the first connecting hole 16 and the second connecting hole 17 is provided.

  The method of using the fall prevention device 10 will be described. The bolt 21 inserted through the first through portion 13 of the base end portion 11 is screwed into the screw groove 2B of the anchor member 2A placed in the upper floor slab 2. In combination, the base end portion 11 is fixed to the upper floor slab 2. Further, the suspension bolt 3 inserted through the second through portion 14 of the suspended side attachment portion 12 is fixed to the suspended side attachment portion 12 with nuts 22 and 23.

In this way, the suspension bolt 3 is suspended and held on the upper floor slab 2 via the fall prevention device 10 having the above configuration, so that the ceiling structure suspended from the ceiling behind the suspension bolt 3 is caused by an earthquake or the like. Even if the wire member 15 sways in the horizontal direction (see FIG. 3), the up-down direction (see FIG. 4), or a combination of these, the wire member 15 follows the direction of the sway and bends. Therefore, the vibration is not transmitted from the base end portion 11 to the anchor member 2A, and the anchor member 2A can be prevented from being damaged by a vibration such as an earthquake.

  As described above, in this embodiment, the fall prevention device 10 has a ceiling structure that is suspended and held from the upper floor slab 2, and includes a base end portion 11 that is attached to the upper floor slab 2 and the ceiling structure. And a suspended attachment part 12 attached to the side, and the suspended attachment part 12 is provided on the base end part 11 so as to be swingable.

  In this case, by suspending and holding the ceiling structure on the upper floor slab 2 via the fall prevention device 10, shaking of the ceiling structure is blocked by the fall prevention device 10, and the ceiling structure in the upper floor slab 2 is It is possible to prevent the vibration from being transmitted to the anchor member 2A which is a connection structure, to prevent the anchor member 2A from being damaged by a vibration such as an earthquake, and to prevent the ceiling structure from falling. Moreover, the fall prevention apparatus 10 of a present Example can construct | assemble a compact fall prevention structure, without arranging the structure of a ceiling back by arrange | positioning in the connection part of the upper floor slab 2 and a ceiling structure. it can.

  The suspended side attachment portion 12 is provided on the base end portion 11 via a wire member 15 so as to be swingable.

  In this case, by using the flexibility of the wire member 15, the suspended attachment portion 12 is pivotably connected to the base end portion 11, so that the suspended attachment portion 12 can be moved in the vertical and horizontal directions. The movement of the suspended attachment part 12 is prevented from being transmitted to the base end part 11 by bending the wire member 15 with respect to the movement of.

  Further, since the connecting portion 19 is loosely inserted into the first connecting hole 16 and the second connecting hole 17, the retaining member 18 is relative to the base end portion 11 and the suspended side attachment portion 12. Therefore, there is a margin in the operation of the wire member 15 with respect to the base end portion 11 and the suspended attachment portion 12, and the fall prevention device 10 can be prevented from being damaged.

  Next, a second embodiment will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same part as the said Example 1, and the detailed description is abbreviate | omitted.

  In the fall prevention device 30 according to the second embodiment, the base end portion 31 is made of a metal rod-like member, and includes a male screw portion 32 that can be screwed to the anchor member 2A on one side and a swinging convex portion 33 on the other side. Yes. Further, the suspended side mounting portion 34 is made of a metal cylindrical member, and on one side, a swinging concave portion 35 that can swingably store a swinging convex portion 33 of the base end portion 31, and on the other side, an all screw member. And a female screw part 36 to which the suspension bolt 3 can be attached.

  The swinging convex portion 33 is formed in a substantially spherical shape with a tip portion cut, and a groove portion 37 into which a minus driver can be fitted is formed at the tip portion.

  The rocking recess 35 has an outer diameter D1 of a male screw portion 32 of the base end portion 31, a rocking convex portion 33, and a neck portion 38 formed at an intermediate portion between the male screw portion 32 and the rocking convex portion 33. , D2, D3 (D3 <D1 <D2), one of the suspended side mounting portions 34 formed on the inner diameter D4 larger than the diameter D4 has a smaller diameter D5 (D3 <D1 <D5 < D2) is provided with a tapered reduced diameter portion 39 formed by reducing the diameter in a mortar shape.

  The method of using the fall prevention device 30 will be described. First, as an assembly method of the fall prevention device 30, the male screw portion 32 of the base end portion 31 is inserted from the other female screw portion 36 side of the suspended side attachment portion 34. Then, the male screw portion 32 is exposed to the outside from the side of the one of the swinging concave portions 35 of the suspended side mounting portion 34, and the swinging convex portion 33 is prevented from coming off inside the swinging concave portion 35 by the reduced diameter portion 39. The joint 40 of the fall prevention device 30 in which the swinging convex portion 33 is swingably provided inside the swinging concave portion 35 is assembled, and the assembly of the fall prevention device 30 is completed.

  Then, using the fall prevention device 30 assembled as described above, the first male screw portion 32 of the base end portion 31 is screwed into the screw groove 2B of the anchor member 2A placed in the upper floor slab 2. Then, the base end portion 31 is fixed to the upper floor slab 2. Further, the suspension bolt 3 is screwed into the female screw portion 36 of the suspended side attachment portion 34, and the suspension bolt 3 is fixed to the suspended side attachment portion 34.

  In this way, the suspension bolt 3 is suspended and held on the upper floor slab 2 via the fall prevention device 30 having the above configuration, so that the ceiling structure suspended from the ceiling behind the suspension bolt 3 is caused by an earthquake or the like. Even if it swings in a horizontal direction of 360 degrees (see FIG. 9), a vertical direction (see FIG. 10), or a combination of these, the swinging concave portion 35 follows the swinging direction in the joint portion 40, and the swinging convex portion 33 Swaying or moving up and down relative to the swaying convex part 33, the swaying is blocked by the joint part 40, and the swaying is not transmitted from the base end part 31 to the anchor member 2A. It is possible to prevent the anchor member 2A from being damaged by shaking such as an earthquake.

  As described above, in this embodiment, the fall prevention device 30 has a ceiling structure that is suspended from the upper floor slab 2 and includes a base end portion 31 that is attached to the upper floor slab 2 side, and the ceiling structure. And a suspended attachment portion 34 attached to the side, and the suspended attachment portion 34 is provided at the base end portion 31 so as to be swingable.

  In this case, the ceiling structure is suspended and held by the upper floor slab 2 via the fall prevention device 30, so that the shaking of the ceiling structure is blocked by the fall prevention device 30 and the ceiling structure in the upper floor slab 2. It is possible to prevent the vibration from being transmitted to the anchor member 2A which is a connection structure, to prevent the anchor member 2A from being damaged by a vibration such as an earthquake, and to prevent the ceiling structure from falling. Moreover, the fall prevention apparatus 30 of a present Example can construct | assemble a compact fall prevention structure, without arranging the structure of a ceiling back by arrange | positioning in the connection part of the upper floor slab 2 and a ceiling structure. it can.

  Further, the joint portion 40 is composed of a spherical swinging convex portion 33 and a swinging concave portion 35 having a reduced diameter portion 39 having a mortar-like taper shape, so that the base end portion 31 is suspended as a rotation shaft. When the lower side mounting portion 34 rotates, the contact state between the reduced diameter portion 39 and the spherical swinging convex portion 33 and the neck portion 38 becomes good, and with the improvement in the pivotability of the suspended side mounting portion 34. Further, the followability to the direction of shaking of the suspended side attachment portion 34 is also improved. Similarly, even when the base end portion 31 rotates with the suspended side attachment portion 34 as a rotation axis, the contact state between the reduced diameter portion 39 and the spherical swinging convex portion 33 and the neck portion 38 becomes good, As the pivotability of the base end portion 31 is improved, the followability to the direction of shaking of the base end portion 31 is also improved.

  Next, a third embodiment will be described with reference to FIGS. In addition, the same code | symbol is attached | subjected to the same part as the said Example 1 and 2, and the detailed description is abbreviate | omitted.

  In the fall prevention device 50 according to the third embodiment, the base end portion 51 is the hanging side mounting portion 34 in the second embodiment, and the hanging side mounting portion 52 is the base end portion 31 in the second embodiment.

  The use method of the above fall prevention device 50 will be described. Using the fall prevention device 50 assembled as in the second embodiment, it is screwed into the screw groove 2B of the anchor member 2A placed on the upper floor slab 2. The female screw portion 36 is screwed into the lower portion of the suspended bolt 3, and the base end portion 51 is fixed to the suspended bolt 3. Then, the male screw portion 32 of the hanging side attachment portion is fixed to the upper portion of the hanger member 4 with nuts 53 and 54.

  As described above, the suspension bolt 3 is suspended and held on the upper floor slab 2 via the fall prevention device 50 having the above-described configuration, so that the ceiling structure suspended from the ceiling behind the suspension bolt 3 is caused by an earthquake or the like. Even if it swings in the horizontal direction (see FIG. 13), the up-down direction (see FIG. 14), or a combination of these, the swinging convex portion 33 follows the direction of swinging in the joint portion 40 and the swinging concave portion 35. By swinging up or down relative to the swinging recess 35, the swing is blocked by the joint portion 40, and the swing is not transmitted from the base end portion 51 to the anchor member 2A. Can be prevented from being damaged by shaking such as an earthquake.

  As described above, in this embodiment, the fall prevention device 50 has a ceiling structure that is suspended from the upper floor slab 2 and includes a base end 51 that is attached to the upper floor slab 2 and the ceiling structure. And a suspended attachment portion 52 attached to the side, and the suspended attachment portion 52 is provided on the base end portion 51 so as to be swingable.

  In this case, by suspending and holding the ceiling structure on the upper floor slab 2 via the fall prevention device 50, the fall prevention device 50 blocks the shaking of the ceiling structure, and the ceiling structure in the upper floor slab 2 is It is possible to prevent the vibration from being transmitted to the anchor member 2A which is a connection structure, to prevent the anchor member 2A from being damaged by a vibration such as an earthquake, and to prevent the ceiling structure from falling. Moreover, the fall prevention apparatus 50 of a present Example can construct | assemble a compact fall prevention structure, without arranging the structure of a ceiling back by arrange | positioning in the connection part of the upper floor slab 2 and a ceiling structure. it can.

  As shown in FIG. 15, the fall prevention device 30 of the second embodiment and the fall prevention device 50 of the third embodiment may be used simultaneously.

  Next, Embodiment 4 will be described with reference to FIG. In addition, the same code | symbol is attached | subjected to the same part as the said Examples 1-3, and the detailed description is abbreviate | omitted.

  In the fourth embodiment, the equipment 60 of various facilities such as lighting equipment, sound equipment, air conditioning ventilation equipment, fire extinguishing equipment is suspended and held from the upper floor slab 2 via the suspension bolt 3 independently of the ceiling structure. ing. The equipment 60 is fixed to the suspension bolt 3 by nuts 62 and 63 via a slab side mounting bracket 61.

  Further, the facility device 60 is fixed to a recumbent member 64 laid between a plurality of field edges 1 via a mounting bracket (not shown) via a ceiling-side mounting bracket 65. As a result, the ceiling structure and the equipment 60 that are individually suspended and held by the suspension bolts 3 and the equipment 60 can be integrated.

  For example, a sprinkler head of other equipment 60 (not shown) may be fixed to the recumbent member 64. In addition, a part of the equipment 60 is provided to be exposed indoors through an opening 66 formed by cutting out a part of the ceiling panel 7.

  By suspending and holding the suspension bolt 3 on the upper floor slab 2 via the fall prevention device 30 having the above-described configuration, the equipment 60 that is suspended and retained from the ceiling behind the suspension bolt 3 is moved horizontally by an earthquake or the like ( 13), the swinging concave portion 35 swings with respect to the swinging convex portion 33 in the joint portion 40 even if the swinging portion swings in the vertical direction (see FIG. 14) or a combination thereof. Alternatively, by moving up and down relatively with respect to the swinging convex portion 33, the swing is blocked by the joint portion 40, and the swing is not transmitted from the base end portion 51 to the anchor member 2 </ b> A, and the anchor member 2 </ b> A It can be prevented from being damaged by shaking.

  As described above, in the present embodiment, the fall prevention device 30 of the equipment 60 suspended from the upper floor slab 2, the base end 51 attached to the upper floor slab 2 side, and the equipment The suspension side attachment portion 52 attached to the device 60 side is provided, and the suspension side attachment portion 52 is provided on the base end portion 51 so as to be swingable.

  In this case, the equipment 60 in the upper floor slab 2 is blocked by the fall prevention device 30 by suspending and holding the equipment 60 on the upper floor slab 2 via the fall prevention device 30. It is possible to prevent the vibration from being transmitted to the anchor member 2 </ b> A having a connection structure with 60, prevent the anchor member 2 </ b> A from being damaged by a vibration such as an earthquake, and prevent the equipment device 60 from falling. Moreover, the fall prevention apparatus 30 of a present Example constructs | assembles a compact fall prevention structure, without arranging the structure of a ceiling back by arrange | positioning in the connection part of the upper floor slab 2 and the equipment 60. FIG. Can do.

  In addition, since the ceiling structure and the equipment 60 that are individually suspended and held by the suspension bolts 3 are structured to be able to behave integrally, the ceiling structure and the equipment 60 are different from each other due to a shake such as an earthquake. It is possible to prevent the ceiling structure and the equipment 60 from coming into contact with each other and being damaged.

  In addition to the fall prevention device 30, the fall prevention device of the present embodiment may be the fall prevention device 10 of the first embodiment, the fall prevention device 50 of the third embodiment, or a combination thereof.

  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 a ceiling structure, in this embodiment, a conventional ceiling using a field edge and a field edge receiving member is used as an example of a ceiling base material. However, a so-called T-bar is also used for a ceiling base material for a ceiling structure. The system ceiling may have been used. Further, the method for fixing the equipment 60 and the suspension bolt 3 is not limited to the content of the fourth embodiment.

2 Upper floor slab (superstructure)
10, 30, 50 Fall prevention device 11, 31, 51 Base end portion 12, 34, 52 Hanging side attachment portion 15 Wire member 16 First connection hole 17 Second connection hole 18 Retaining member 19 Connection portion 20 Retaining part

Claims (2)

A device for preventing a suspended body from being suspended from an upper structure,
A base end portion attached to the upper structure side;
A suspended side mounting portion attached to the suspended body side,
The suspended side mounting portion is provided swingably on the base end portion via a plurality of wire members,
A plurality of first connection holes are formed in the base end portion, a plurality of second connection holes are formed in the hanging side attachment portion, and the wire member is connected to the first connection holes and the first connection holes. 2 connecting holes,
At both ends of the wire member, a retaining member is provided,
The retaining member is formed with a connection portion formed in a diameter smaller than the diameters of the first connection hole and the second connection hole, and is formed in the connection portion. The first connection hole and the second connection It has a retaining part formed with a diameter larger than the diameter of the hole,
Since the connection portion is loosely inserted into the first connection hole and the second connection hole, the retaining member operates relative to the base end portion and the suspended side attachment portion. A fall prevention device characterized by being provided . The fall prevention device according to claim 1, wherein the first connection holes are formed at equal intervals, and the second connection holes are formed at equal intervals.

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