Fall prevention net

Abstract

To provide a fall prevention net that is easy to install even if there is an obstacle.SOLUTION: A fall prevention net 20 has holding ropes 30 capable of being fixed or hooked to a beam member by using holding mechanisms 50, and a net-like bag body 40 comprising a fastener part 60 mounted to the holding ropes 30 so as to open its opening edge part and formed downward from the opening edge part in a use posture to divide and couple it.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a fall prevention net. [Background technology]

[0002] The following Patent Document 1 describes a ground fall prevention net used to catch objects falling from power transmission-related components. This ground fall prevention net has multiple locking members, each of which is made of a ring-shaped hook and a rope, that can be attached to and detached from the power transmission-related components. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2008-261123 A Summary of the Invention [Problem to be solved by the invention]

[0004] The ground fall prevention net shown in the above Patent Document 1 is formed by stretching a mesh body over a frame body. However, if there is an obstacle such as an electric wire at the place where the ground fall prevention net is to be placed, the mesh body and the obstacle will interfere with each other, making it difficult to install the ground fall prevention net. Also, for example, even when catching falling objects at a building construction site, it may be difficult to use such a ground fall prevention net in a place where beams and braces intersect.

[0005] In consideration of the above, the present invention aims to provide a fall prevention net that is easy to deploy even when there are obstacles. [Means for solving the problem]

[0006] The fall prevention net of claim 1 comprises a support rope that can be fixed or hooked onto a beam member using a retaining mechanism, and a net-like bag body that is attached to the support rope so that its opening edge is open and has a zipper portion that is formed downward from the opening edge in the usage position and can be divided and connected.

[0007] In the fall prevention net of claim 1, when the support rope is fixed or hooked to the beam member using the holding mechanism, a net-like bag with an open edge is placed below the beam member. This makes it possible to capture broken pintails, bolts, nuts, etc. when bolting steel beam joints, etc., and to prevent the pintails, bolts, nuts, etc. from falling downward.

[0008] In addition, even if there is an obstacle such as a brace under the beam, a fall prevention net can be placed by splitting the fastener section and passing the obstacle inside and outside the bag body.

[0009] The fall prevention net of claim 2 is the fall prevention net of claim 1, wherein the support ropes are a pair of support ropes arranged at a distance from one another in a downwardly curved state in a usage position, and the bag body has a main net whose both ends are hung across the pair of support ropes and which is curved downward in a usage position to form a semi-cylindrical shape with its axial direction along the beam member, and a divided net fixed to the curved portions of the support ropes and having the fastener portion provided in the center.

[0010] In the fall prevention net of claim 2, when a pair of support ropes arranged at a distance from each other are fixed or hooked to a beam member, a bag body formed of the main net and the divided nets is placed under the beam member. Of these, the main net is formed in a semi-cylindrical shape that fits the beam member, making it easy to capture pintails, bolts, nuts, etc.

[0011] A fall prevention net according to claim 3 is the fall prevention net according to claim 1 or 2, wherein the holding mechanism includes a buckle that connects ends of the support ropes together to form a loop.

[0012] In the fall prevention net of claim 3, the ends of the support rope are connected to each other by a buckle to form a loop, so that the bag body with an upward opening can be hung by hanging it on a beam.

[0013] A fall prevention net according to a fourth aspect of the present invention is the fall prevention net according to the first or second aspect, wherein the holding mechanism includes a magnet capable of fixing the support rope to a steel frame member.

[0014] In the fall prevention net of claim 4, the support ropes can be connected and disconnected to steel columns or steel beams with a single touch by using magnets.

[0015] In the fall prevention net of claim 4, in the fall prevention net according to any one of claims 1 to 3, the holding mechanism may include a magnet capable of fixing the support rope to a steel frame member.

[0016] A fall prevention net according to claim 5 is the fall prevention net according to claim 1 or 2, wherein the fastener portion includes a plurality of snap buttons.

[0017] In the fall prevention net of claim 5, by using multiple snap buttons, the size of the opening in the fastener portion can be adjusted according to the cross-sectional area of ​​the brace.

[0018] In addition, a fall prevention net according to claim 5 may be the fall prevention net according to any one of claims 1 to 3, wherein the fastener portion includes a plurality of snap buttons. Effect of the Invention

[0019] The fall prevention net of the present invention is easy to deploy even when there are obstacles. [Brief description of the drawings]

[0020] [Figure 1] 1A is a side view of a fall prevention net according to an embodiment of the present invention, FIG. 1B is a front view, and FIG. [Diagram 2] 1 is a schematic perspective view showing a state in which a fall prevention net according to an embodiment of the present invention is hung on a beam. [Diagram 3] 1 is a schematic perspective view showing a fall prevention net according to an embodiment of the present invention being hung on a beam having a brace. FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0021] Hereinafter, a fall prevention net according to an embodiment of the present invention will be described with reference to the drawings. Components indicated by the same reference numerals in each drawing are the same components. However, unless otherwise specified in the specification, each component is not limited to one, and may be present in multiple numbers.

[0022] In addition, explanations of configurations and symbols that are duplicated in each drawing may be omitted. Note that the present disclosure is not limited to the following embodiments, and may be implemented by making appropriate modifications, such as omitting configurations, replacing them with different configurations, or combining one embodiment and various modified examples, within the scope of the purpose of the present disclosure.

[0023] In each drawing, the directions indicated by the arrows X and Y are directions along a horizontal plane and are perpendicular to each other. The direction indicated by the arrow Z is a direction along the vertical direction (up and down direction). The directions indicated by the arrows X, Y, and Z in each drawing are assumed to be mutually consistent.

[0024] <Fall prevention net> The fall prevention net 20 shown in FIG. 1 includes a support rope 30, a bag body 40, a holding mechanism 50 and a fastener portion 60.

[0025] (Support rope) The support rope 30 is a long member that can be fixed to or hooked onto the beam member 14 shown in FIG. 2 using a retaining mechanism 50 (at least one of a buckle 52, a magnet 54, and a carabiner 56, which will be described in detail later).

[0026] The beam member 14 is a beam that is spanned across the column members 12 of the building 10. The column members 12 and the beam members 14 are made of iron. The beam members 14 have joints that are joined using bolts 16, for example. The fall prevention net 20 is used, for example, to prevent the pintail, bolts, nuts, and the like from falling downward when the bolts 16 are installed.

[0027] Two support ropes 30 are used as a pair. When the fall prevention net 20 is in the use position, the two support ropes 30 are arranged with a gap therebetween and curved downward.

[0028] As shown in FIG. 1, the support rope 30 is formed to include a main body portion 32 that curves downward when the fall prevention net 20 is in the usage position, and extension portions 34 formed on both ends of the main body portion 32.

[0029] As shown in Fig. 1(A), the divided net 44 of the bag body 40 is fixed to the center (the portion curved downward) of the main body 32. Also, as shown in Fig. 1(B), the main net 42 of the bag body 40 is hung across and fixed to each of the main body parts 32 of the pair of support ropes 30. In other words, the divided net 44 and the main net 42 are fixed to the center of the main body part 32.

[0030] In the main body 32, both end portions as viewed from the portion where the divided nets 44 and the main net 42 are fixed (i.e., the portion where the bag body 40 is fixed) extend upward. As a result, four arms are formed above the bag body 40.

[0031] The extensions 34 are portions formed on both ends of the main body 32, and allow the length of the arm to be adjusted. A buckle 52 and a carabiner 56 are fixed to the extensions 34.

[0032] (holding mechanism) The retaining mechanism 50 is a general term for a member for fixing or hooking the support rope 30 to the beam member 14 shown in Fig. 2. The retaining mechanism 50 can also be used for fixing or hooking the support rope 30 to the "pillar member 12" or the like.

[0033] For the sake of simplicity, detailed configurations of the holding mechanism 50 and the support ropes 30 are omitted in FIG.

[0034] 1 is a joining member that connects the ends of the support rope 30 to form a loop. The buckle 52 includes a male member 52A fixed to one of the extensions 34 that form the support rope 30, and a female member 52B fixed to the other extension 34.

[0035] An extension 34 is inserted into the inside of the male member 52A, and the end of the extension 34 extends to the outside of the male member 52A. By adjusting the extension length of the extension 34, the length of the support rope 30 (the arm length) can be adjusted.

[0036] Similarly, the extension 34 is inserted into the female member 52B, and the end of the extension 34 extends to the outside of the female member 52B. By adjusting the extension length of the extension 34, the length of the support rope 30 (the arm length) can be adjusted.

[0037] The male member 52A and the female member 52B are engaged with each other to form the support rope 30 into a circular shape. This allows the support rope 30 to be hooked onto the beam member 14, as shown in Fig. 2. In addition, if the support rope 30 is passed through the pillar member 12, it can also be hooked onto the pillar member 12 and the beam member 14.

[0038] 1 is a support member capable of fixing the support ropes 30 to a steel frame member. The magnets 54 are attached to the base ends of the four arms (in other words, on both sides of the portion of the main body 32 where the split net 44 and the main net 42 are fixed).

[0039] This allows the support rope 30 to be fixed to the pillar member 12 or the beam member 14 shown in Fig. 2. It is preferable to use the magnet 54 in combination with the buckle 52, but when the support rope 30 is fixed to the pillar member 12 or the beam member 14 using the magnet 54, the connection of the buckle 52 may be released.

[0040] 1 is an auxiliary member fixed to the tip of the extension 34. The carabiner 56 can be hooked onto various parts (such as scaffolding or a topic) at the construction site of the building 10 or onto the support rope 30 itself to prevent the fall prevention net 20 from falling.

[0041] (Bag body) 2, the bag body 40 is a basket-shaped member attached to the support rope 30 so that the opening edge portion is open. The bag body 40 has a fastener portion 60 that is formed downward from the opening edge portion and is divided and connected in the usage position.

[0042] The bag body 40 is formed using a mesh-like (net-like) sheet material (such as a mesh sheet), and air can pass through the mesh. This prevents the bag body 40 from being blown around by the wind. The bag body 40 may be formed using a combination of a sheet without mesh or a mesh sheet with a finer mesh than the sheet material forming the bag body 40 in order to prevent paint such as an anti-rust paint from falling off or spreading.

[0043] The bag body 40 includes a main net 42 and a divided net 44. As an example, the main net 42 is a mesh sheet having both ends hung over two support ropes 30. The main net 42 is curved downward in the usage position and is formed in a semi-cylindrical shape with the axial direction along the beam member 14.

[0044] As an example, the divided net 44 is a mesh sheet fixed to the curved portion of the support rope 30 (the portion curved downward when the fall prevention net 20 is in the use position) and provided with a fastener part 60 in the center. The divided net 44 is formed by combining nets 44A and 44B, and the nets 44A and 44B are joined to each other by the fastener part 60.

[0045] (Zipper part) The fastener portion 60 is a joining portion that is formed downward from the opening edge of the bag body 40 and is divided and connected when the fall prevention net 20 is in the use position. The fastener portion 60 is formed on the divided net 44.

[0046] The fastener portion 60 is provided with a plurality of snap buttons 62. The snap buttons 62 are a sealing mechanism that uses a combination of a concave button and a convex button. The fastener portion 60 can be divided and connected by fixing one of the concave button and the convex button to the net 44A and fixing the other to the net 44B.

[0047] <Action and Effects> In the fall prevention net 20 of the embodiment of the present invention, when the support rope 30 is fixed or hooked to the beam member 14 shown in Figure 2 using at least one of the buckle 52, magnet 54, and carabiner 56 in the retaining mechanism 50 shown in Figure 1, a net-shaped bag body 40 with an open opening edge is positioned below the beam member 14.

[0048] Specifically, the length of the extension 34 forming the support rope 30 is adjusted, and the male member 52A and the female member 52B of the buckle 52 are engaged with each other. At this time, the length of the extension 34 is adjusted according to the size of the beam member 14 on which the support rope 30 is to be hooked. In addition, with the beam member 14 surrounded by the loop-shaped support rope 30, the male member 52A and the female member 52B are engaged with each other. As a result, the support rope 30 is hooked on the beam member 14.

[0049] Furthermore, the magnet 54 attached to the support rope 30 is fixed to the beam member 14. The magnet 54 may be fixed to the pillar member 12. In this way, the support rope 30 is fixed to the beam member 14 or the pillar member.

[0050] In addition, the carabiner 56 is hooked onto the scaffolding, the topic, or the support rope 30 itself. This prevents the fall prevention net 20 from falling even if the male member 52A and the female member 52B are engaged or disengaged, or the magnet 54 is released from its fixed position.

[0051] The two support ropes 30 are fixed to or hooked onto the beam member 14, whereby a bag body 40 with an open edge is disposed below the beam member 14. The bag body 40 is disposed below the joint of the beam member 14.

[0052] This makes it possible to capture broken pintails, bolts, nuts, etc., when fixing joints of beam members 14, which are steel beams, with bolts 16, and prevents the pintails, bolts, nuts, etc. from falling downward.

[0053] Furthermore, as shown in FIG. 3, even if an obstacle such as a brace 18 passes under a beam (wind-resistant beam 14A shown as an example), the fall prevention net 20 can be positioned by dividing the fastener portion 60 and passing the obstacle inside and outside the bag body 40.

[0054] The fastener portion 60 also includes a plurality of snap buttons 62. This allows the size of the opening of the fastener portion 60 to be adjusted according to the cross-sectional area of ​​an obstacle such as the brace 18 shown in FIG.

[0055] 2, when a pair of support ropes 30 arranged at a distance from one another are fixed or hooked to the beam member 14, the fall prevention net 20 according to the embodiment of the present invention has a bag body 40 formed of the main net 42 and the divided nets 44 disposed under the beam member 14. Of these, the main net 42 is formed in a semi-cylindrical shape that fits the beam member 14, making it easy to capture pintails, bolts, nuts, and the like.

[0056] In addition, in the fall prevention net 20 according to the embodiment of the present invention, as shown in Fig. 1, the ends of the support rope 30 are connected to each other by a buckle 52 to form a loop. Therefore, the bag body 40 opening upward can be hung by being hooked on a beam member as shown in Fig. 2.

[0057] 1, the fall prevention net 20 according to the embodiment of the present invention has a magnet 54. This allows the support rope 30 to be connected and disconnected with a single touch to the column member 12, which is a steel column, or the beam member 14, which is a steel beam, shown in FIG.

[0058] <Other embodiments> In the above embodiment, the bag body 40 is formed by fixing the main net 42 and the divided nets 44 to the support ropes 30, but the embodiment of the present invention is not limited to this.

[0059] For example, the bag body 40 may be formed as a single bag-shaped mesh bag, and four arms may be fixed to its open end. In this case, at least one of the buckle 52, the magnet 54, and the carabiner 56 is fixed to each arm. Even with this configuration, the bag body 40 can be disposed below the beam member 14.

[0060] In the above embodiment, the holding mechanism 50 includes all of the buckle 52, the magnet 54, and the carabiner 56, but the embodiment of the present invention is not limited to this. The holding mechanism 50 may include at least one of the buckle 52, the magnet 54, and the carabiner 56. Even with this configuration, the bag body 40 can be disposed below the beam member 14.

[0061] In the above embodiment, the fastener portion 60 is provided with a plurality of snap buttons 62, but the present invention is not limited to this embodiment. The fastener portion 60 may have various configurations, such as a loop button, a magnet, or a hook-and-loop fastener. In this way, the present invention can be embodied in various aspects. [Explanation of symbols]

[0062] 14 Beam member 20 Fall prevention net 30 Support rope 40 Bag body 42 Mainnet 44 Split Net 50 Retention mechanism 52 Buckle (retention mechanism) 54 Magnet (holding mechanism) 56 Carabiner (retention mechanism) 60 Zipper section 62 Snap button

Claims

1. A support rope that can be fixed to or hooked onto a beam member using a retention mechanism; A net-like bag body attached to the support rope so that an opening edge portion is open, and has a fastener portion formed downward from the opening edge portion in a usage position, and divided and connected; A fall prevention net having a fall prevention net.

2. The support rope is A pair of support ropes arranged at a distance from each other in a downwardly curved state in a usage position, The bag body is A main net having both ends hung over a pair of the support ropes and curved downward in a usage position to have a semi-cylindrical shape with an axial direction along the beam member; A divided net is fixed to the curved portion of the support rope and has the fastener portion provided in the center portion; The fall prevention net according to claim 1 .

3. The holding mechanism includes: A buckle is included which connects the ends of the support rope together to form a loop. A fall prevention net according to claim 1 or 2.

4. The holding mechanism includes: Including a magnet capable of fixing the support rope to a steel frame member, A fall prevention net according to claim 1 or 2.

5. The fastener portion includes a plurality of snap buttons. A fall prevention net according to claim 1 or 2.

Images