JP5468280B2 - Fire net - Google Patents

Description

  The present invention relates to a fire net, and more particularly to a fire net that can be attached to a metal exhaust pipe.

  Conventionally, when entering a petrochemical factory or the like with an automobile, it is required to attach a fire prevention net so as to cover the exhaust port of the exhaust pipe of the vehicle from the viewpoint of fire prevention and explosion prevention. This fire net is generally configured to have a bag body in which a wire mesh is formed in a bag shape, a wire for fixing the bag body to an exhaust pipe, and the like so that the bag body covers the exhaust port. After mounting, the bag is fixed to the exhaust pipe with a wire.

  However, since the conventional fire net described above is configured to fix the bag body to the exhaust port with a wire, the wire may break due to repeated attachment and detachment and the like, and the fire net may come off during traveling.

  In response to this, there has been proposed a fireproof net that does not easily come off even after repeated use by passing a vise through the bag and fixing the bag to the exhaust pipe with the vise (for example, Patent Document 1). reference).

Utility Model Registration No. 3088849

  However, the fire net proposed in Patent Document 1 is configured to fix the fire net to the exhaust pipe by rotating the vise male screw rod after covering the bag body with the exhaust port. There was a problem that it took time and effort.

  It is an object of the present invention to provide a fire net that can be easily attached and is difficult to come off during traveling.

  The present invention is a fire net that is attached to a metal exhaust pipe that exhausts exhaust gas and prevents the discharge of fire species contained in the exhaust gas, and a plurality of magnets that are attached to the outer peripheral surface of the exhaust pipe by magnetic force A member, an opening formed at one end, a sealing portion formed at the other end, and an exhaust port in the exhaust pipe formed between the opening and the sealing portion The present invention relates to a fire net, comprising: a hollow portion in which a part of the side is inserted and disposed, and a bag body that is directly or indirectly connected to the plurality of magnet members.

  A plurality of engaging portions provided on the plurality of magnet members; and a plurality of engaged portions provided near the opening in the bag body and engageable with the plurality of engaging portions. It is preferable to provide.

  Further, it is preferable that the plurality of magnet members are attached at positions corresponding to the diameter of the exhaust pipe, or are deformed and attached according to the diameter of the exhaust pipe.

  Moreover, it is preferable that the notch part of predetermined length is formed in the periphery of the opening part in the said bag body from the said one side to the said other side.

  Moreover, it is preferable that the said bag body is comprised with the metal-mesh which has the softness | flexibility which can deform | transform according to the diameter of the said exhaust pipe.

  According to the present invention, it is possible to provide a fireproof net that can be easily attached and is difficult to come off during traveling.

It is an appearance perspective view showing the state where the fire net according to the first embodiment is attached to the exhaust pipe of the automobile. It is an external appearance perspective view which shows the external appearance of the fire prevention net which concerns on 1st Embodiment. It is a disassembled perspective view of the fire net which concerns on 1st Embodiment. It is a perspective view which shows the state which stuck the magnet member to the exhaust pipe with a thin pipe diameter. It is a perspective view which shows the state which stuck the magnet member to the exhaust pipe with a thick pipe diameter. It is a top view which shows the state which attached the fire net to the exhaust pipe with a thin pipe diameter. It is a top view which shows the state which attached the fire net to the exhaust pipe with a thick pipe diameter. It is an external appearance perspective view which shows the state which attached the fire net which concerns on 2nd Embodiment to the exhaust pipe of a motor vehicle. It is an external appearance perspective view which shows the external appearance of the fire prevention net which concerns on 2nd Embodiment. It is a disassembled perspective view of the fire prevention net which concerns on 2nd Embodiment. It is a perspective view which shows the state which attached the fire net to the exhaust pipe with a thin pipe diameter. It is a perspective view which shows the state which attached the fire net to the exhaust pipe with a thick pipe diameter. It is a top view which shows the state which stuck the magnet member to the exhaust pipe with a thin pipe diameter. It is a top view which shows the state which stuck the magnet member to the exhaust pipe with a thick pipe diameter.

Hereinafter, embodiments of the present invention will be described.
[First Embodiment]
First, the fire net 1 according to the first embodiment of the present invention will be described with reference to FIGS. 1 to 3.
FIG. 1 is an external perspective view showing a state in which a fire net 1 according to the first embodiment is attached to an exhaust pipe 10 of an automobile. FIG. 2 is an external perspective view showing the external appearance of the fire net 1 according to the first embodiment. FIG. 3 is an exploded perspective view of the fire net 1 according to the first embodiment.

  As shown in FIG. 1, the fire net 1 according to the present embodiment is attached to a metal exhaust pipe 10 in, for example, an automobile (for example, a diesel automobile) traveling in a petrochemical factory. The fire net 1 prevents fire species such as high-temperature soot and sparks discharged from the exhaust pipe 10 together with the exhaust gas from being discharged to the outside.

As shown in FIGS. 2 and 3, the fire net 1 includes a mesh bag 2, a plurality of engagement holes 29 as engaged portions, a plurality of magnet members 3, and hooks as engagement portions. Part 31.
The bag body 2 is composed of a stainless steel wire mesh 20 having a plurality of openings (so-called stitches). As the wire mesh 20, for example, one having 20 to 50 holes per 1 cm ² is preferably used. When the number of openings formed in the wire mesh 20 exceeds 50 per 1 cm ² , fire types such as high-temperature soot and sparks contained in the exhaust gas pass through the openings in the wire mesh and prevent the discharge of fire types. It may not be possible. If the number of openings formed in the wire mesh 20 is less than 20 per 1 cm ² , the exhaust gas passage resistance increases, which may deteriorate the exhaust efficiency.

  The bag body 2 is configured in a cylindrical shape having one end opened and the other end sealed. The bag 2 is formed between the opening 21 formed at one end, the sealing portion 22 formed at the other end, and the opening 21 and the sealing portion 22. The hollow part 23 and the notch part 27 extended toward the edge part of the other side from the edge part of one side are provided. The bag body 2 is formed by the following procedure, for example.

First, a pair of substantially identical rectangular metal meshes 20 are overlapped, and the side edges 24 and 25 along the longitudinal direction of the overlapped metal mesh 20 are joined.
Next, in a state in which the pair of wire meshes 20 is slackened so as to form a hollow portion 23 between the pair of wire meshes 20, a rear edge that is one of the side edges along the width direction of the pair of wire meshes 20. 26 are joined together. As a result, the sealing portion 22 is formed on the rear edge 26 side of the pair of wire meshes 20, and the opening 21 is formed on the front edge side. A hollow portion 23 surrounded by a pair of wire meshes 20 is formed between the opening 21 and the sealing portion 22.

  The length of the bag body 2 in the longitudinal direction is configured to be a quarter or more of the length of the exhaust pipe 10. In the present invention, the length of the bag body 2 in the longitudinal direction may be a length that can accommodate at least a part of the exhaust pipe 10 on the exhaust port 11 side in the longitudinal direction.

  The cut portion 27 is formed so as to extend from the peripheral edge 28 of the opening portion 21 to the sealing portion 22 side. The cut portion 27 is formed by cutting a predetermined amount of the side edge 24 on the opening 21 side. The length of the cut portion 27 is, for example, about a quarter of the length in the longitudinal direction of the bag body 2.

  The plurality of engagement holes 29 are formed in the vicinity of the opening 21. The plurality of engagement holes 29 are formed so as to be positioned at equal intervals in the circumferential direction of the peripheral edge 28 of the opening 21.

The plurality of magnet members 3 are formed in a flexible rectangular sheet shape, and include a magnetic surface 32 having magnetism and a nonmagnetic surface 33 that is a surface opposite to the magnetic surface 32.
The plurality of magnet members 3 are in close contact with each other at a predetermined position corresponding to the diameter of the exhaust pipe 10 by a magnetic force. The plurality of magnet members 3 are in close contact with the magnetic surface 32.

The hook portion 31 includes a base portion 34 attached to the nonmagnetic surface 33 of the magnet member 3 and an engaging claw portion 35 extending from the base portion 34.
The base portion 34 is attached to the nonmagnetic surface 33 of the magnet member 3 so that the engaging claw portion 35 is positioned in a direction orthogonal to the longitudinal direction of the magnet member 3.
The engagement claw portion 35 is formed in a rod shape, and is formed so as to be able to be inserted into the engagement hole portion 29 provided in the bag body 2. Further, the engaging claw portion 35 is formed in a substantially L shape in which the vicinity of the base portion 34 is bent.

  Next, a method for mounting the fire net 1 according to the first embodiment will be described.

  The operator first closes each of the plurality of magnet members 3 to a predetermined position on the outer peripheral surface 12 in the vicinity of the exhaust port 11 of the exhaust pipe 10 to which the fire net 1 is attached, depending on the diameter of the exhaust pipe 10. Let The plurality of magnet members 3 are in close contact with the outer peripheral surface 12 of the exhaust pipe 10 so that the engagement claw portions 35 face the opposite side of the exhaust pipe 10 in the axial direction.

Next, the operator takes out the bag body 2, grasps one end portion 27 a and the other end portion 27 b of the wire mesh 20 positioned on both sides of the cut portion 27, and separates the one end portion 27 a and the other end portion 27 b from each other (separate from each other). Pull in the direction).
Here, the fire net 1 is formed with a cut portion 27 continuous with the opening 21 in a direction orthogonal to the peripheral edge 28 from the opening 21 side of the bag body 2 toward the sealing portion 22 side. Therefore, it is possible to expand the opening 21 along the notch 27 by pulling the one end 27 a and the other end 27 b of the wire mesh 20 outward.

  When the opening 21 is widened, the operator places the exhaust port 11 side of the exhaust pipe 10 inside the bag body 2 as shown in FIG. Accordingly, a part of the exhaust pipe 10 on the exhaust port 11 side is disposed in the hollow portion 23.

When the exhaust port 11 side of the exhaust pipe 10 is disposed in the hollow portion 23 of the bag body 2, the operator can connect the engagement claw portion 35 from the inner surface side (exhaust pipe 10 side) of the bag body 2 to an appropriate engagement hole portion. 29 is inserted. Thereby, the bag body 2 is connected to the plurality of magnet members 3.
Here, the plurality of magnet members 3 are in close contact with the outer peripheral surface 12 of the exhaust pipe 10 so that the engaging claws 35 face the opposite side of the exhaust pipe 11 in the axial direction of the exhaust pipe 10. Therefore, when the engagement claw portion 35 is inserted through the engagement hole portion 29, for example, even when the bag body 2 is pulled toward the exhaust port 11 in the axial direction of the exhaust pipe 10 during traveling of the vehicle, a plurality of magnet members No more than 3.

According to the fire net 1 according to the first embodiment having the above-described configuration, the following effects are exhibited.
In the fire net 1 according to the first embodiment, the plurality of magnet members 3 are brought into close contact with the outer peripheral surface 12 of the metal exhaust pipe 10, and the engagement claw portions 35 provided on the plurality of magnet members 3 are arranged on the bag body 2. The plurality of magnet members 3 and the bag body 2 are connected to each other by being inserted through the engagement hole portion 29. Therefore, the fire net 1 can be easily attached to the exhaust pipe 10 of the vehicle. Further, the attached fire net 1 is unlikely to come off while the vehicle is running.

Moreover, the fire net 1 has a configuration in which a plurality of magnet members 3 are provided. As a result, the magnet member 3 can be brought into close contact with the pipe diameter of the exhaust pipe 10. For example, as shown in FIG. 4, when the diameter of the exhaust pipe 10 </ b> A is smaller than the diameter of the opening 21 of the fire net 1, the magnet member 3 is disposed close to the magnet member 3 so that the exhaust pipe It can be suitably adhered to the outer peripheral surface 12 of 10A.
Further, for example, as shown in FIG. 5, when the pipe diameter of the exhaust pipe 10 </ b> B is larger than the diameter of the opening 21 of the fire net 1, the magnet member 3 is separated by disposing the magnet member 3. It can be suitably adhered to the outer peripheral surface 12 of the exhaust pipe 10B.

  Further, the bag body 2 is constituted by a wire mesh 20 having flexibility that can be deformed according to the diameter of the exhaust pipe. Therefore, for example, as shown in FIGS. 4 and 5, even when the plurality of magnet members 3 are brought into close contact with the pipe diameter of the exhaust pipe 10, the wire mesh 20 is deformed, so that It becomes possible to connect the body 2.

  Moreover, the notch part 27 extended from the opening part 21 of the bag body 2 to the sealing part 22 side was provided, and the engagement hole part 29 with which the engagement claw part 35 can engage was provided. Thereby, the magnitude | size of the opening of the opening part 21 can be easily adjusted according to the pipe diameter of the exhaust pipe 10. FIG. For example, as shown in FIG. 6, when the diameter of the exhaust pipe 10 </ b> A is smaller than the diameter of the opening 21 of the fire net 1, the magnet member 3 is disposed close to the appropriate engagement hole 29. The fire prevention net 1 can be attached to the exhaust pipe 10 </ b> A by inserting the engaging claw portion 35 into the exhaust pipe 10 </ b> A. At this time, the one end portion 27a and the other end portion 27b of the wire mesh 20 are arranged to overlap each other.

  As shown in FIG. 7, when the pipe diameter of the exhaust pipe 10 </ b> B is larger than the diameter of the opening 21 of the fire net 1, the magnet member 3 is spaced apart and an appropriate engagement hole 29 is provided. By inserting the engaging claw portion 35 into the cutout portion 27, the cutout portion 27 spreads and the fire net 1 can be attached to the exhaust pipe 10A.

  Moreover, since the notch part 27 extended from the opening part 21 to the sealing part 22 side was formed, the opening part 21 can be opened largely and the attachment to the exhaust pipe 10 of the fire net 1 can be performed easily.

[Second Embodiment]
Next, a fire net 1A according to a second embodiment of the present invention will be described with reference to FIGS.
The fire net 1A according to the second embodiment relates to the first embodiment in that the bag body 2A has a connecting portion 29A for inserting and connecting a plurality of magnet members 3 instead of the plurality of engaging hole portions 29. It differs from the fire net 1. Therefore, in 2nd Embodiment, it demonstrates centering on a different point from 1st Embodiment. In addition, in 2nd Embodiment, the same code | symbol is attached | subjected about the thing similar to the fire net 1 which concerns on 1st Embodiment, and description is abbreviate | omitted.

  FIG. 8 is an external perspective view showing a state in which the fire net 1A according to the second embodiment is mounted on the exhaust pipe 10 of the automobile. FIG. 9 is an external perspective view showing the external appearance of the fire net 1A according to the second embodiment. FIG. 10 is an exploded perspective view of the fire net 1A according to the second embodiment.

As shown in FIGS. 8 to 10, the fire net 1 </ b> A includes a net-like bag body 2 </ b> A and a plurality of magnet members 3.
2 A of bag bodies are the hollow part formed between the opening part 21 formed in the edge part of one side, the sealing part 22 formed in the edge part of the other side, and the opening part 21 and the sealing part 22 A portion 23, a cutout portion 27 extending from one end portion toward the other end portion, and a connecting portion 29A for inserting a plurality of magnet members 3 in the vicinity of the opening portion 21 are provided.

The connecting portion 29 </ b> A is continuous with the insertion port 40 and a pair of insertion ports 40 that are formed in the one end portion 27 a and the other end portion 27 b on the opening 21 side of the wire mesh that sandwich the notch portion 27 and into which the plurality of magnet members 3 are inserted. A hollow insertion portion 41. The connecting portion 29A is formed by the following procedure, for example.
First, of the side edges along the width direction of the bag body 2A, the side edge on the opening 21 side is bent to the outer surface side (the side opposite to the exhaust pipe 10 side). Next, the side edge is joined to the outer surface of the wire mesh 20. As a result, a pair of insertion ports 40 along the longitudinal direction of the bag body 2A is formed at one end portion 27a and the other end portion 27b of the wire mesh sandwiching the cut portion 27. And the insertion part 41 enclosed by the wire mesh 20 is formed so that a pair of insertion opening 40 may be followed.

  The plurality of magnet members 3 are inserted from the pair of insertion ports 40 in a state where the magnetic surface 32 is on the inner surface side (exhaust pipe 10 side) and the non-magnetic surface 33 is on the outer surface side, and are appropriately disposed inside the insertion portion 41. Thus, the bag body 2A is connected.

Next, a method for mounting the fire net 1A will be described.
First, the operator inserts the plurality of magnet members 3 into the insertion portion 41 from the insertion port 40 of the bag body 2A. When the plurality of magnet members 3 are inserted into the insertion portion 41, the operator places the plurality of magnet members 3 at appropriate positions inside the insertion portion 41.
When the plurality of magnet members 3 are arranged at appropriate positions, the operator holds the one end 27a and the other end 27b of the wire mesh. When the one end 27a and the other end 27b of the wire mesh are gripped, the operator pulls the one end 27a and the other end 27b outward (in a direction away from each other).
Here, the fire net 1A is formed with a cut portion 27 continuous with the opening 21 in a direction orthogonal to the peripheral edge 28 from the opening 21 side of the bag body 2A toward the rear edge 26 side. Therefore, it is possible to widen the opening 21 along the notch 27 by pulling the one end 27a and the other end 27b of the wire mesh outward.
When the opening 21 is widened, the operator positions the exhaust port 11 side of the exhaust pipe 10 inside the bag body 2A as shown in FIG. Accordingly, a part of the exhaust pipe 10 on the exhaust port 11 side is disposed in the hollow portion 23.

When the exhaust port 11 side of the exhaust pipe 10 is positioned inside the bag body 2 </ b> A, the operator causes the magnetic surfaces 32 of the plurality of magnet members 3 inserted into the connecting portion 29 </ b> A to closely contact the outer peripheral surface 12 of the exhaust pipe 10. .
Here, the magnet member 3 is in close contact with the outer peripheral surface 12 of the metal exhaust pipe 10 through the metal mesh 20 on the exhaust pipe 10 side in the insertion portion 41. The magnet member 3 is formed in a flexible sheet shape. Therefore, as shown in FIG. 8, the fire net 1 can bring the connecting portion 29 </ b> A of the bag body 2 </ b> A into close contact with the exhaust pipe 10 by bringing the magnet member 3 into close contact with the exhaust pipe 10 through the wire mesh 20. Become.

According to the fire net 1A according to the second embodiment having the above-described configuration, the following effects can be obtained in addition to the same effects as the first embodiment.
In the fire net 1A according to the second embodiment, a plurality of magnet members 3 are inserted and arranged in the insertion portion 41 constituting the connecting portion 29A. Accordingly, the bag body 2 </ b> A can be brought into close contact with the outer peripheral surface 12 of the exhaust pipe 10 by the magnetic force of the magnet member 3 in a state where the exhaust port 11 of the exhaust pipe 10 is positioned in the hollow portion 23. Therefore, the fire net 1A can be easily attached to the exhaust pipe 10 of the vehicle. Also, the attached fire net 1A is unlikely to come off while the vehicle is running.

Further, the fire net 1A has a configuration in which a plurality of magnet members 3 are provided. As a result, the magnet member 3 can be brought into close contact with the pipe diameter of the exhaust pipe 10. For example, in the case where the pipe diameter of the exhaust pipe 10A is smaller than the diameter of the opening 21 of the fire net 1A, the magnet member 3 is disposed close to the inside of the insertion part 41 as shown in FIG. The magnet member 3 can be brought into close contact with the outer peripheral surface 12 of the exhaust pipe 10A.
In addition, for example, when the pipe diameter of the exhaust pipe 10B is larger than the diameter of the opening 21 of the fire net 1, the magnet member 3 is disposed separately inside the insertion section 41 as shown in FIG. Thus, the magnet member 3 can be brought into close contact with the outer peripheral surface 12 of the exhaust pipe 10B.

Further, a cut portion 27 extending from the opening 21 of the bag body 2A toward the sealing portion 22 is provided, and is formed by a metal mesh 20 having flexibility that can be deformed according to the diameter of the exhaust pipe 10. Thereby, the magnitude | size of the opening of the opening part 21 can be easily adjusted according to the pipe diameter of the exhaust pipe 10. FIG. For example, as shown in FIG. 13, when the pipe diameter of the exhaust pipe 10 </ b> A is smaller than the diameter of the opening 21 of the fire net 1 </ b> A, the magnet member 3 is arranged close to the inside of the insertion part 41 and the wire mesh By disposing the one end portion 27a and the other end portion 27b of 20 in an overlapping manner, the fire net 1A can be easily attached to the exhaust pipe 10A.
Further, as shown in FIG. 14, when the pipe diameter of the exhaust pipe 10B is larger than the diameter of the opening 21 of the fire net 1A, the magnet member 3 is arranged apart from the inside of the insertion part 41, and the wire mesh The fire net 1A can be easily attached to the exhaust pipe 10A by expanding the one end portion 27a and the other end portion 27b.

In addition, this invention is not limited to the said embodiment at all, and the technical scope of this invention is not limited to these.
For example, in the first embodiment and the second embodiment of the present invention, the description has been given using the plurality of magnet members 3, but the present invention is not limited to this. For example, the magnet member may be composed of one magnet member.

  Further, for example, in the first embodiment, the magnet member 3 has a configuration in which the hook portion 31 is provided in each of the plurality of magnet members 3, but the present invention is not limited thereto. For example, the magnet member may have a configuration in which a plurality of hook portions 31 are provided on one sheet-like magnet member.

  Moreover, in this embodiment, although the bag body 2 demonstrated using the bag body 2 which has the one cutting part 27, in this invention, it is not restricted to this. For example, the structure which has a some notch part may be sufficient as a bag.

DESCRIPTION OF SYMBOLS 1 Fire prevention net 2 Bag body 3 Magnet member 10 Exhaust pipe 11 Exhaust port 12 Outer peripheral surface 20 Wire net 21 Opening part 22 Sealing part 23 Hollow part 27 Cutting part 28 Peripheral 29 Engagement hole part 31 Hook part

Claims (4)

A fire prevention net attached to a metal exhaust pipe that exhausts exhaust gas and preventing discharge of fire species contained in the exhaust gas,
A plurality of magnet members attached to the outer peripheral surface of the exhaust pipe by magnetic force;
An opening formed at one end, a sealing portion formed at the other end,
A hollow portion formed between the opening portion and the sealing portion, and a portion of the exhaust pipe on the exhaust port side is inserted and disposed, and directly or indirectly connected to the plurality of magnet members A bag body ,
A plurality of hook portions provided on the plurality of magnet members;
A plurality of engaged portions provided near the opening in the bag body and engageable with the plurality of hook portions;
A fire net that further comprises The fire net according to claim 1 , wherein the plurality of magnet members are rectangular sheets having flexibility so as to be deformable in accordance with a diameter of the exhaust pipe . The fire net according to claim 1 or 2 , wherein a cut portion having a predetermined length is formed from the one side to the other side at a peripheral edge of the opening in the bag body. The fireproof net according to any one of claims 1 to 3 , wherein the bag body is configured by a wire mesh having flexibility that can be deformed according to an outer peripheral surface of the exhaust pipe having a different diameter .

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