JP4641930B2 - Hook holding device for safety belt to prevent falling off - Google Patents

Description

  The present invention relates to a hook holding device for a safety belt for drop-off for detachably installing on a screw rod suspended from a ceiling surface and for hooking a hook connected to a safety belt for drop-off prevention.

Conventionally, there has not been proposed a hook holding device for a safety belt for preventing dropout using a screw rod suspended from a ceiling surface. Hereinafter, a pipe support hardware using a screw rod suspended from the ceiling surface will be described with reference to FIGS. 8 to 10 (Patent Document 1).
When an operator works using a pipe support metal in a high place, the suspension bolt 125 of the locking portion 2 is embedded in the ceiling material B, and the locking portion 2 is attached to a predetermined portion of the ceiling material B in advance. Then, in a state where the piping material A is raised, the support portion 1 is attached to a predetermined portion of the piping material A, and then the piping material A to which the support portion 1 is attached is attached to the ceiling material B using a stepladder scaffold L or the like. The support part 1 attached to the piping material A by the connection part 3 and the locking part 2 attached to the ceiling material B are connected with one touch by the connection part 3, and the piping material A is suspended and supported on the ceiling material B. .
Then, after the piping material A is suspended and supported in this way, the push lock type fixing tool 140 is pushed into the locking main body 123 and the elastic extension portion 135 to fix them together.
This pipe support metal fitting is a vertical extension from a flange 112 that extends from the end of a semicircular belt support 110 that can be opened and closed, among the support 1 that supports the outer peripheral surface of the pipe A. A locking hook 134 that extends obliquely downward via 133 and is suspended from the ceiling material B by the suspension bolt 125, and only on the inside of the lower end of the side edge 122 of the locking body 123. A rotating obliquely rising opening / closing hook 132 is rotatably attached, and the fixing hook 134 is pushed up and positioned above the opening / closing hook 132 together with the support portion 1 attached to the piping material A by floor work. The fixing hook 134 is hung, and the support portion 1 and the piping material A supported by the support portion 1 are suspended and supported on the locking portion 2 with one touch.
Japanese Utility Model Publication No. 6-43464

  As described above, in the conventional pipe support hardware, the suspension bolt 125 of the locking portion 2 is embedded in the ceiling material B, and the locking portion 2 is attached to a predetermined location of the ceiling material B in advance. After attaching the support part 1, the piping material A to which the support part 1 is attached is lifted to the vicinity of the ceiling material B using a stepladder scaffold L or the like, and the support part 1 attached to the piping material A by the connecting part 3 and the ceiling Although it suspends and supports the material B, there is a risk of dropping the operator when lifting a heavy object.

  Therefore, the present invention has an object to provide a safety belt hook holding device for preventing falling off that is easy to attach and detach to a screw rod suspended from a ceiling surface, and that does not cause a worker's safety belt hook to come off. To do.

According to a first aspect of the present invention, there is provided a hook holding device for a safety belt for drop-off prevention that is detachably installed on a screw rod suspended from a ceiling surface, and for preventing a drop-off for hooking a hook connected to the safety belt for drop-off prevention. A safety belt hook holding device, comprising: a first locking portion that engages with a screw groove of the screw rod; a second locking portion that engages with the screw groove of the screw rod; and the hook And a ring portion that forms a mounting hole for engaging the first engagement portion, and a position of the screw groove that engages with the first engagement portion and a position of the screw groove that engages with the second engagement portion. When a tensile force is applied to the ring portion by the hook with a predetermined interval, the direction of the force that the first locking portion acts on the thread groove, and the second locking portion is the The ring portion is arranged so that the direction of the force acting on the thread groove is different.
According to a second aspect of the present invention, there is provided a hook holding device for a safety belt for preventing dropout according to the first aspect, wherein the opening / closing fulcrum shaft rotatably connects the one end side of the opening / closing plate A and the one end side of the opening / closing plate B. And an elastic member that biases the opening / closing plate A and the opening / closing plate B in a closing direction, and the ring portion is disposed on the other end side of the opening / closing plate A and the other end side of the opening / closing plate B. And the first locking portion and the second locking portion are formed between the opening / closing fulcrum shaft and the ring portion.
According to a third aspect of the present invention, in the hook holding device of the safety belt for preventing dropout according to the second aspect, the opening / closing plate A and the opening / closing plate B are arranged on one end side and a grip piece on the other end side. And a pair of side wall portions formed by bending a side piece between one end and the other end of the substrate, and the opening / closing fulcrum shaft is provided on one end side of the pair of side wall portions. In addition, a recess is formed in the pair of side wall portions, and the first locking portion and the second locking portion are formed by the recess.
According to a fourth aspect of the present invention, in the hook holding device of the safety belt for preventing dropping according to the third aspect, the grip piece and the ring portion are the same member as the substrate, and are formed by press working. It is characterized by.
According to a fifth aspect of the present invention, in the hook holding device of the safety belt for drop prevention according to the third aspect, a plurality of concave portions are formed in each of the pair of side wall portions, and the other end is more than the concave portion on one end side. The concave portion on the side is formed large.
According to a sixth aspect of the present invention, in the hook holding device of the safety belt for preventing dropout according to the third aspect, a lock hole is formed on each of the other end sides of the pair of side wall portions and is inserted into the lock hole. It is characterized by having a lock rod.
According to a seventh aspect of the present invention, in the hook holding device of the safety belt for drop prevention according to the sixth aspect, the one lock rod corresponding to the lock hole formed in one of the side walls, and the other The other lock rod corresponding to the lock hole formed in the side wall portion is connected by a lock lever, the lock lever is formed by an elastic member, and the lock rod is moved by the elastic force of the lock lever to the lock hole. It is biased in the insertion direction.
According to an eighth aspect of the present invention, in the hook holding device of the safety belt for preventing dropping according to the sixth aspect, the lock bar corresponding to the lock hole formed in one of the side wall portions is connected to a lock lever. The lock lever is characterized in that the lock rod is urged in an insertion direction into the lock hole by an elastic member.
According to a ninth aspect of the present invention, in the hook holding device of the safety belt for preventing dropping according to the seventh aspect, a side hole is formed in the substrate, and the elastic force of the lock lever is regulated by the side hole. It is characterized by being.
According to a tenth aspect of the present invention, in the hook holding device of the safety belt for drop prevention according to the first aspect, a holding body is provided between the first locking portion and the second locking portion, The holding body has a thread that engages with the thread groove.
The present invention according to claim 11 is the hook holding device of the safety belt for drop prevention according to claim 10, wherein the first locking portion is formed on one end side of the holding body, and the other end of the holding body. The second locking portion is formed on the side.
A holding device according to a twelfth aspect of the present invention is a holding device that is detachably installed on a rod in which a thread groove is formed, and includes a first locking portion that engages with the thread groove, and the thread groove. And a load portion that receives a load is formed, and the position of the thread groove to which the first locking portion engages is engaged with the second locking portion. The position of the thread groove that has a predetermined interval, and when a load is applied to the load portion, the direction of the force that the first locking portion acts on the thread groove, and the second relationship An opening / closing fulcrum shaft that pivotally connects one end side of the opening / closing plate A and one end side of the opening / closing plate B by arranging the load portion so that the direction of the force acting on the screw groove is different from the stop portion ; An elastic member that biases the opening / closing plate A and the opening / closing plate B in a closing direction, and the load portion is connected to the other end side of the opening / closing plate A and the opening / closing plate B. Provided on the end side, and said first engaging portion and the second engagement portion, characterized in that formed between the load unit and the opening and closing fulcrum shaft.
According to a thirteenth aspect of the present invention, in the holding device according to the twelfth aspect , the opening / closing plate A and the opening / closing plate B, a substrate having a grip piece on one end side and a load portion connected to the other end side, A pair of side wall portions formed by bending side pieces from one end to the other end of the substrate, the opening / closing fulcrum shaft is provided on one end side of the pair of side wall portions, and the pair of side wall portions A concave portion is formed in the first concave portion, and the first locking portion and the second locking portion are formed by the concave portion.

  As described above, according to the present invention, when the apparatus is mounted, it is easy to fix a pipe or a cord to a screw rod while working on a stepladder scaffold or a rolling tower having a certain height. A hook holding device can be attached according to the type of screw rod.

The hook holding device of the safety belt for drop-off prevention according to the first embodiment of the present invention has a first locking portion that engages with the thread groove of the screw rod, and a second that engages with the thread groove of the screw rod. A locking portion and a ring portion that forms a mounting hole for hooking are formed, and the position of the thread groove that the first locking portion engages and the position of the screw groove that the second locking portion engages And when the tensile force is applied to the ring portion by the hook, the direction of the force that the first locking portion acts on the thread groove, and the second locking portion acts on the thread groove. The ring portion is arranged so that the direction of the force to be applied is different. According to this embodiment, the hook holding device can be installed on the screw rod suspended from the ceiling surface by the two locking portions having a predetermined interval.
According to the second embodiment of the present invention, in the hook holding device of the safety belt for drop prevention according to the first embodiment, one end side of the opening / closing plate A and one end side of the opening / closing plate B are rotatably connected. An opening / closing fulcrum shaft, and an elastic member that urges the opening / closing plate A and the opening / closing plate B to close, and a ring portion is provided on the other end side of the opening / closing plate A and the other end side of the opening / closing plate B, The first locking portion and the second locking portion are formed between the opening / closing fulcrum shaft and the ring portion. According to the present embodiment, since the engaging portion is formed by the two opening / closing plates that open and close with one end side as a fulcrum, the hook holding device can be installed on the screw rod by the opening / closing operation of the opening / closing plate. Can be attached and detached. Moreover, since the moment force on the screw rod can be increased by forming the ring portion on the other end side as in this embodiment, it is possible to reliably prevent the hook holding member from being detached from the screw rod. Can do.
According to a third embodiment of the present invention, in the hook-holding device for the safety belt for drop-off according to the second embodiment, the opening / closing plate A and the opening / closing plate B are connected to one end side, and the grip piece is connected to the other end side. And a pair of side wall portions formed by bending a side piece from one end to the other end of the substrate, and an opening / closing fulcrum shaft is provided on one end side of the pair of side wall portions. A concave portion is formed in the side wall portion, and a first locking portion and a second locking portion are formed by the concave portion. According to the present embodiment, since the locking portion can be formed by being sandwiched by the concave portion, the hook holding device can be easily attached to and detached from the screw rod.
According to a fourth embodiment of the present invention, in the hook holding device of the safety belt for preventing dropping according to the third embodiment, the grip piece and the ring portion are the same member as the substrate, and are formed by pressing. It is. According to the present embodiment, since the ring portion is not particularly formed by welding, it is easy to ensure safety.
According to a fifth embodiment of the present invention, in the hook holding device of the safety belt for drop-off prevention according to the third embodiment, a plurality of recesses are formed in each of the pair of side wall portions, and other than the recesses on one end side. The concave portion on the end side is formed large. According to the present embodiment, installation is possible even for screw rods of different diameters, and when an attempt is made to attach a screw rod of a large diameter to the locking portion on one end side, the opening / closing plate is closed. Therefore, it is possible to prevent the hook holding device from being erroneously installed with respect to the screw rod.
According to a sixth embodiment of the present invention, in the hook holding device of the safety belt for drop prevention according to the third embodiment, a lock hole is formed on each of the other end sides of the pair of side wall portions, and the lock hole is inserted into the lock hole. It is equipped with a lock rod. According to the present embodiment, since the lock hole is formed on the other end side, it is possible to prevent the hook holding device from being mistakenly installed on the screw rod, and to perform a reliable locking operation. Can do.
According to a seventh embodiment of the present invention, in the hook holding device of the safety belt for drop prevention according to the sixth embodiment, one lock rod corresponding to the lock hole formed in one side wall portion, and the other The other lock rod corresponding to the lock hole formed in the side wall is connected by a lock lever, the lock lever is formed by an elastic member, and the lock rod is urged in the insertion direction into the lock hole by the elastic force of the lock lever. To do. According to the present embodiment, the lock mechanism is constituted by the pair of lock rods, and a reliable locking operation can be performed because the urging force against the lock rod is performed by the lock lever.
According to an eighth embodiment of the present invention, in the hook holding device for a safety belt for drop prevention according to the sixth embodiment, a lock rod corresponding to a lock hole formed in one side wall portion is connected to a lock lever. The lock lever is an elastic member in which the lock rod is urged in the direction of insertion into the lock hole. According to the present embodiment, the lock mechanism is constituted by the lock rod, and a reliable locking operation can be performed because the urging force against the lock rod is performed by the elastic member.
According to a ninth embodiment of the present invention, in the hook holding device of the safety belt for drop-off prevention according to the seventh embodiment, a side hole is formed in the substrate, and the elastic force of the lock lever is regulated by the side hole. It is. According to the present embodiment, the substrate can be used effectively and the lock operation can be easily confirmed.
According to a tenth embodiment of the present invention, in the hook holding device for a safety belt for drop-off according to the first embodiment, a holding body is provided between the first locking portion and the second locking portion. The holding body has a thread that engages with the thread groove. According to the present embodiment, the holding body can surely couple with the screw rod.
According to an eleventh embodiment of the present invention, in the hook holding device of the safety belt for drop-off prevention according to the tenth embodiment, a first locking portion is formed on one end side of the holding body, and the other end of the holding body A second locking portion is formed on the side. According to the present embodiment, the first locking portion and the second locking portion can be formed by the holding body.
A holding device according to a twelfth embodiment of the present invention includes a first locking portion that engages with a thread groove, a second locking portion that engages with the thread groove, and a load portion that receives a load. When a load is applied to the load portion with a predetermined interval between the position of the screw groove engaged with the first locking portion and the position of the screw groove engaged with the second locking portion. The load portion is arranged so that the direction of the force acting on the thread groove is different from the direction of the force acting on the thread groove and the direction of the force acting on the thread groove is the second locking portion , and one end side of the opening / closing plate A And an opening / closing fulcrum shaft that rotatably connects the opening / closing plate B, and an elastic member that urges the opening / closing plate A and the opening / closing plate B in the closing direction. The first locking portion and the second locking portion are provided between the open / close fulcrum shaft and the load portion . According to this Embodiment, a holding | maintenance apparatus can be installed with respect to a stick | rod by two latching | locking parts which have a predetermined space | interval. In addition, since the locking portion is formed by two opening / closing plates that open and close with one end side as a fulcrum, the holding device can be installed on the rod by the opening / closing operation of the opening / closing plate, so that the attachment / detachment can be easily performed. Moreover, since the moment force with respect to the rod can be increased by forming the load portion on the other end side as in the present embodiment, it is possible to reliably prevent the holding member from being detached from the rod.
A thirteenth embodiment of the present invention is the holding device according to the twelfth embodiment, wherein the opening / closing plate A and the opening / closing plate B, the substrate having a grip piece on one end side and a load portion connected to the other end side, It is composed of a pair of side wall portions formed by bending side pieces between one end and the other end of the substrate, and an opening / closing fulcrum shaft is provided on one end side of the pair of side wall portions, and a recess is formed in the pair of side wall portions. The first locking portion and the second locking portion are formed by the recess. According to the present embodiment, since the locking portion can be formed by being sandwiched by the recess, the holding device can be easily attached to and detached from the rod.

An embodiment of the present invention will be described below with reference to FIGS.
1 is a perspective view showing a closed state of a hook holding device of a safety belt for preventing dropping according to the present embodiment, FIG. 2 is a perspective view showing an opened state of the device, and FIG. 3 is a cross-sectional view of an essential part showing a locked state of the device. 4 is a cross-sectional view of the main part showing the unlocked state of the apparatus, and FIG. 5 is a perspective view showing the installed state of the apparatus.
The hook holding device of the safety belt for preventing dropping according to the present embodiment includes a pair of opening and closing plates 10 and 20 and an opening and closing fulcrum shaft 31 that rotatably connects one end side of the opening and closing plate 10 and one end side of the opening and closing plate 20. The ring portion 11 is provided on the other end side of the opening / closing plate 10 and the other end side of the opening / closing plate 20 is provided with an elastic member 32 that biases the opening / closing plate 10 and the opening / closing plate 20 in the closing direction. A ring portion 21 is provided. Here, the ring portions 11 and 21 are preferably triangular openings with one end side where the hook is disposed narrowed and the other end side widened. The first locking portions 41 </ b> A and 42 </ b> A and the second locking portions 41 </ b> B and 42 </ b> B are formed between the opening / closing fulcrum shaft 31 and the ring portions 11 and 21.
The opening / closing plate 10 includes a substrate 13 having a grip piece 12 connected to one end side and a ring portion 11 connected to the other end side, and a pair of side wall portions 14A formed by bending a side piece between one end and the other end of the substrate 13. , 14B.
Similarly, the opening / closing plate 20 has a pair of side walls formed by bending a side piece between one end and the other end of the substrate 23 and a substrate 23 having a grip piece 22 connected to one end side and a ring portion 21 connected to the other end side. 24A and 24B.

The opening / closing plate 10 is provided with an opening / closing fulcrum shaft 31 on one end side of the pair of side wall portions 14A, 14B. Similarly, the opening / closing plate 20 is provided with an opening / closing fulcrum shaft 31 on one end side of the pair of side wall portions 24A, 24B.
And the 1st latching | locking part 41A, 42A is formed with the recessed part formed in 14 A of side walls of the opening / closing board 10, and the recessed part formed in 24 A of side walls of the opening / closing board 20. FIG. Further, the second locking portions 41B and 42B are formed by the recess formed in the side wall portion 14B of the opening / closing plate 10 and the recess formed in the side wall portion 24B of the opening / closing plate 20. The plurality of recesses formed in the side wall parts 14A, 14B, 24A, 24B are located on the other end side of the first locking part 41A and the second locking part 41B formed by the recesses on the one end side. The first locking portion 42A and the second locking portion 42B formed by the recesses are formed large.
Lock holes 15A and 15B are formed on the other end sides of the pair of side wall portions 14A and 14B in the opening / closing plate 10, respectively. Similarly, lock holes 25A and 25B are formed on the other end sides of the pair of side wall portions 24A and 24B in the opening / closing plate 20, respectively.

The lock rod 33 </ b> A is disposed in the lock hole 15 </ b> A of the opening / closing plate 10 and is configured to be inserted into the lock hole 25 </ b> A of the opening / closing plate 20. Further, the lock bar 33 </ b> B is disposed in the lock hole 15 </ b> B of the opening / closing plate 10 and is configured to be inserted into the lock hole 25 </ b> B of the opening / closing plate 20.
One lock bar 33 </ b> A and the other lock bar 33 </ b> B are connected by a lock lever 34. The lock lever 34 is formed by an elastic member, and by this elastic force, the lock bar 33A is urged in the insertion direction of the lock hole 25A, and the lock bar 33B is urged in the insertion direction of the lock hole 25B.
Side holes 35 are formed in the substrate 13 of the opening / closing plate 10 to restrict the elastic force of the lock lever 34. The side hole 35 is formed with a narrow portion a and a wide portion b. By disposing the lock lever 34 in the narrow portion a, the distance between the lock rod 33A and the lock rod 33B is shortened, and the lock lever By disposing 34 in the wide portion b, the distance between the lock rod 33A and the lock rod 33B is increased. The lock is released when the distance between the lock bar 33A and the lock bar 33B is shortened, and is locked when the distance between the lock bar 33A and the lock bar 33B is increased.

FIG. 5 shows a state in which a screw rod 52 is attached to an insert nut 51 provided on the ceiling surface, and the device of this embodiment is mounted on the screw rod 52.
First, the state shown in FIG. 2 is obtained by pinching the grip piece 12 of the opening / closing plate 10 and the grip piece 22 of the opening / closing plate 20 in a state where the lock lever 34 is disposed in the narrow portion a of the side hole 35 and the lock is released. It becomes. In this state, the screw rod 52 is disposed at the position of the first locking portion 42A and the second locking portion 42B. In the figure, the case where a large-diameter screw rod 52 is used is shown.
When the gripping piece 12 of the opening / closing plate 10 and the gripping piece 22 of the opening / closing plate 20 are released, the opening / closing plate 10 and the opening / closing plate 20 are closed by the urging force of the elastic member 32 as shown in FIG. It becomes. In this state, the first locking portion 42 </ b> A and the second locking portion 42 </ b> B engage with the thread groove of the screw rod 52 with a predetermined interval.
Next, by disposing the lock lever 34 in the wide portion b of the side hole 35, the lock rod 33A is inserted into the lock hole 25A of the opening / closing plate 20, and the lock rod 33B is inserted into the lock hole 25B of the opening / closing plate 20, The lock operation is completed.
After confirming this locking operation, a hook 53 connected to a safety belt for preventing dropout (not shown) is hung on the ring portions 11 and 21.
As a result, if the operator pulls the hook 53 by dropping from the stepladder scaffold or rolling tower during the work, and the tensile force is applied to the ring portions 11 and 21 by the hook 53, the first locking is performed. The portion 42A acts on the screw rod 52 in the X direction, while the second locking portion 42B acts on the screw rod 52 in the Y direction opposite to X. Therefore, the hook holding device is held by the moment force on the screw rod 52.
Accordingly, since the safety band hook 53 does not come off from the hook holding device, the impact of the human body is greatly reduced.

The grip piece 12 and the ring portion 11 in the opening / closing plate 10 are the same members as the substrate 13, and the grip piece 22 and the ring portion 21 in the opening / closing plate 20 are the same members as the substrate 23, each of which is pressed. Preferably, it is formed by. However, in particular, the ring portions 11 and 21 are excellent in that they can be used as waste material due to the end material of the wire and can be downsized by joining them to the substrates 13 and 23 by welding using a wire. ing.
Moreover, although the present Example demonstrated as a hook holding | maintenance device of the safety belt for drop-off prevention, it can be used as various holding | maintenance apparatuses by making the ring parts 11 and 21 into the load part which receives load.

Hereinafter, another embodiment of the present invention will be described with reference to FIGS.
FIG. 6 is a perspective view showing the closed state of the hook holding device of the safety belt for preventing dropping according to the present embodiment, and FIG. 7 is a perspective view showing the opened state of the device.
The hook holding device of the safety belt for preventing dropping according to the present embodiment includes a pair of opening and closing plates 60 and 70, and an opening and closing fulcrum shaft 81 that rotatably connects one end side of the opening and closing plate 60 and one end side of the opening and closing plate 70. The opening / closing plate 60 and the opening / closing plate 70 are provided with an elastic member 82 that biases in the closing direction. A ring portion 61 is provided on the other end side of the opening / closing plate 60, and a ring portion 71 is provided on the other end side of the opening / closing plate 70. Here, the ring portions 61 and 71 are preferably openings having one end side where the hook is disposed narrowed and the other end side widened. Moreover, the ring parts 61 and 71 are formed so that a cross section may be U-shaped. The first locking portions 91A, 92A and the second locking portions 91B, 92B are formed between the opening / closing fulcrum shaft 81 and the ring portions 61, 71.
The opening / closing plate 60 includes a substrate 63 having a grip piece 62 connected to one end side and a ring portion 61 connected to the other end side, and a pair of side wall portions 64A formed by bending a side piece between one end and the other end of the substrate 63. , 64B.
Similarly, the opening / closing plate 70 has a pair of side walls formed by bending a side piece between one end and the other end of the substrate 73 and a substrate 73 having a grip piece 72 connected to one end and a ring portion 71 connected to the other end. It consists of parts 74A and 74B.

The opening / closing plate 60 has an opening / closing fulcrum shaft 81 on one end side of the pair of side wall portions 64A, 64B. Similarly, the opening / closing plate 70 is provided with an opening / closing fulcrum shaft 81 on one end side of the pair of side wall portions 74A, 74B.
And the 1st latching | locking part 91A, 92A is formed of the recessed part formed in the side wall part 64A of the opening / closing plate 60, and the recessed part formed in the side wall part 74A of the opening / closing board 70. FIG. Further, the second engaging portions 91B and 92B are formed by the concave portion formed in the side wall portion 64B of the opening / closing plate 60 and the concave portion formed in the side wall portion 74B of the opening / closing plate 70. The plurality of recesses formed in the side walls 64A, 64B, 74A, 74B are located on the other end side of the first locking portion 91A and the second locking portion 91B formed by the recesses on the one end side. The first locking portion 92A and the second locking portion 92B formed by the recesses are formed large.
A holding body 66 is attached to the inside of the substrate 63. The holding body 66 includes a screw rod between the first locking portion 91A and the second locking portion 91B and between the first locking portion 92A and the second locking portion 92B. A recess having a thread that engages with the thread groove is provided.
A holding body 76 is attached to the inside of the substrate 73. The holding body 76 includes a screw rod between the first locking portion 91A and the second locking portion 91B and between the first locking portion 92A and the second locking portion 92B. A recess having a thread that engages with the thread groove is provided.
A screw hole is formed when the opening / closing plate 60 and the opening / closing plate 70 are in a closed state by the recess provided in the holding body 66 and the recess provided in the holding body 76.
Further, a lock hole 65B is formed on the other end side of the one side wall portion 64B of the opening / closing plate 60. Similarly, a lock hole 75B is formed on the other end side of one side wall 74B of the opening / closing plate 70.
In this embodiment, the holding body 66 is provided between the first locking portion 91A and the second locking portion 91B and between the first locking portion 92A and the second locking portion 92B. 76, the first locking portions 91A and 92A and the second locking portions 91B and 92B may be formed by the holding bodies 66 and 76. That is, the first locking portions 91A and 92A can be formed on one end side of the holding bodies 66 and 76, and the second locking portions 91B and 92B can be formed on the other end side of the holding bodies 66 and 76.

The lock rod 83 </ b> B is disposed in the lock hole 65 </ b> B of the opening / closing plate 60 and is configured to be inserted into the lock hole 75 </ b> B of the opening / closing plate 70.
The lock rod 83 </ b> B is connected to the lock lever 84. The lock rod 83B is biased by the elastic member 86 in the insertion direction of the lock hole 75B.
Side holes 85 are formed in the substrate 63 of the opening / closing plate 60, and the elastic force of the elastic member 86 is restricted by restricting the movement of the lock lever 84. The side hole 85 is formed with a movement groove a and a regulation groove b. By disposing the lock lever 84 in the movement groove a, the lock rod 83B is moved in the insertion direction of the lock hole 75B, and the lock lever 84 is moved. Is arranged in the regulation groove b, thereby regulating the elastic force of the elastic member 86.

  The holding device according to the present invention can be used as a hook holding device for a safety belt for preventing dropout used at a construction site, and for example, can be used as a holding device for a rod formed in a part even if there are few screw grooves. .

The perspective view which shows the closed state of the hook holding | maintenance device of the safety belt for drop-off prevention by one Example of this invention Perspective view showing the device open state Cross-sectional view of the main part showing the locked state of the device Cross section of the main part showing the unlocked state of the device The perspective view which shows the installation state of the apparatus The perspective view which shows the closed state of the hook holding | maintenance device of the safety belt for drop-off prevention by other Examples of this invention Perspective view showing the device open state The figure which shows the conventional example of piping support hardware The figure which shows the conventional example of piping support hardware The figure which shows the conventional example of piping support hardware

10 Opening and closing plate A
11, 21 Ring part 13 Substrate 14A, 14B Side wall part 15A, 15B Lock hole 20 Opening / closing plate B
23 Substrate 24A, 24B Side wall portion 25A, 25B Lock hole 31 Opening / closing fulcrum shaft 32 Elastic member 34 Lock lever 33A, 33B Lock rod 35 Side hole 41A, 42A First locking portion 41B, 42B Second locking portion 52 Screw Stick 53 hook

Claims (13)

  A hook-holding device for a safety belt for fall-off prevention that is detachably installed on a screw rod suspended from a ceiling surface and is connected to a safety belt for fall-off prevention, which is engaged with a thread groove of the screw rod. A first locking portion that engages, a second locking portion that engages with the thread groove of the screw rod, and a ring portion that forms an attachment hole for hooking the hook. The position of the thread groove where the stop part engages and the position of the thread groove where the second locking part engages have a predetermined interval, and a tensile force is applied to the ring part by the hook. In this case, the ring portion is disposed so that the direction of the force acting on the screw groove is different from the direction of the force acting on the screw groove. A hook holding device for a safety belt for preventing dropout.   An opening / closing fulcrum shaft that rotatably connects one end side of the opening / closing plate A and one end side of the opening / closing plate B, and an elastic member that biases the opening / closing plate A and the opening / closing plate B in a closing direction. The ring portion is provided on the other end side of the opening / closing plate A and the other end side of the opening / closing plate B, and the first locking portion and the second locking portion are connected to the opening / closing fulcrum shaft and the The hook holding device of the safety belt for drop-off prevention according to claim 1, wherein the hook holding device is formed between the ring portion and the ring portion.   The opening / closing plate A and the opening / closing plate B are formed by bending a side piece between one end of the substrate and the other end of the substrate, with a grip piece on one end side and a ring portion connected to the other end side. The opening / closing fulcrum shaft is provided on one end side of the pair of side wall portions, a recess is formed in the pair of side wall portions, and the first locking portion and the first are formed by the recess. The hook holding device of the safety belt for drop-off prevention according to claim 2, wherein two locking portions are formed.   The hook holding device for a safety belt for drop-off prevention according to claim 3, wherein the grip piece and the ring portion are the same member as the substrate and are formed by press working.   4. The safety band hook according to claim 3, wherein a plurality of recesses are formed in each of the pair of side wall portions, and the recesses on the other end side are formed larger than the recesses on one end side. Holding device.   The hook holding device for a safety belt for drop-off prevention according to claim 3, wherein a lock hole is formed in each of the other end sides of the pair of side wall portions, and a lock rod is inserted into the lock hole. .   One lock rod corresponding to the lock hole formed in one of the side wall portions and the other lock rod corresponding to the lock hole formed in the other side wall portion are connected by a lock lever, 7. The safety belt for drop-off prevention according to claim 6, wherein the lock lever is formed of an elastic member, and the lock rod is urged in an insertion direction into the lock hole by an elastic force of the lock lever. Hook holding device.   The lock rod corresponding to the lock hole formed in one of the side walls is connected to a lock lever, and the lock lever is urged by an elastic member in the insertion direction of the lock hole. The hook holding device of the safety belt for drop-off prevention according to claim 6.   8. The safety belt hook holding device according to claim 7, wherein a side hole is formed in the substrate, and an elastic force of the lock lever is regulated by the side hole.   The holding body is provided between the first locking portion and the second locking portion, and the holding body has a thread that engages with the screw groove. Hook holding device for safety belt to prevent falling off.   The drop-off prevention mechanism according to claim 10, wherein the first locking portion is formed on one end side of the holding body, and the second locking portion is formed on the other end side of the holding body. Safety belt hook holding device. A holding device that is detachably installed on a rod in which a thread groove is formed, a first locking portion that engages with the thread groove, a second locking portion that engages with the thread groove, A load portion that receives a load is formed, and the position of the screw groove that the first locking portion engages and the position of the screw groove that the second locking portion engages are at a predetermined interval. And when the load is applied to the load portion, the direction of the force that the first locking portion acts on the screw groove and the direction of the force that the second locking portion acts on the screw groove The load portion is arranged so as to be different from each other, and an opening / closing fulcrum shaft that rotatably connects one end side of the opening / closing plate A and one end side of the opening / closing plate B, and the opening / closing plate A and the opening / closing plate B are closed. An elastic member that urges in the direction to become, the load portion is provided on the other end side of the opening / closing plate A and the other end side of the opening / closing plate B, and the first locking portion and the A second engaging portion, the holding device being characterized in that formed between the opening and closing fulcrum shaft and the load unit. The opening / closing plate A and the opening / closing plate B are formed by bending a side piece between one end of the substrate and the other end, and a substrate having a grip piece on one end side and the load portion connected to the other end side. The opening / closing fulcrum shaft is provided on one end side of the pair of side wall portions, a recess is formed in the pair of side wall portions, and the first locking portion and the first are formed by the recess. The holding device according to claim 12 , wherein two holding portions are formed.

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