JP5355167B2 - Fire net - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fire net which is installable easily and hardly comes off during the traveling of a vehicle. <P>SOLUTION: The fire net 1 which is installed in a metal exhaust pipe 10 for discharging exhaust gas and prevents a kindling included in the exhaust gas from being released includes a bag body 2 having an opening 21 formed at one end, a sealing part 22 formed at the other end, and a hollow part 23 which is formed between the opening 21 and the sealing part 22 and in which a part of the exhaust port 11 side of the exhaust pipe 10 is inserted and disposed; and a sheet-like magnet member 3 which is fixed near the opening 21 at the surface thereof at the exhaust pipe 10 side and attached magnetically to the outer peripheral surface 12 of the exhaust pipe 10 so as to be fitted to the outer peripheral surface 12 in the circumferential direction. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

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, etc., and the fire net may come off the exhaust pipe during traveling. was there.

  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 includes an opening formed at one end, and the other A bag having a sealing portion formed at an end portion on the side, and a hollow portion formed between the opening and the sealing portion and into which a portion on the exhaust port side of the exhaust pipe is inserted and arranged And a sheet-like magnet member that is fixed in the vicinity of the opening on the surface on the exhaust pipe side and is attached to the outer peripheral surface of the exhaust pipe along the circumferential direction of the outer peripheral surface by a magnetic force. It relates to a fire prevention net.

  Moreover, it is preferable that the notch part of predetermined length is formed in the periphery of the said 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 formed with the metal-mesh which has the softness | flexibility which can deform | transform according to the diameter of the said exhaust pipe.

  Moreover, it is preferable that a heat insulating material is disposed on the inner surface of the magnet member.

  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 external appearance perspective view which shows the state which attached the fire prevention net which concerns on this embodiment to the exhaust pipe of a motor vehicle. It is a top view of the fire net shown in FIG. It is an external appearance perspective view which shows the external appearance of the fire prevention net which concerns on embodiment of this invention. FIG. 4 is a top view of the fire net shown in FIG. 3. FIG. 4 is a front view of the fire net shown in FIG. 3. It is an external appearance perspective view which shows the state which attaches the fire prevention net which concerns on this embodiment to the exhaust pipe of a motor vehicle. It is AA sectional drawing of the fire net shown in FIG. 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 sectional drawing of the fire net which shows the state which has arrange | positioned the heat insulating material.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 5.
FIG. 1 is an external perspective view showing a state in which a fire net 1 according to this embodiment is mounted on an exhaust pipe 10 of an automobile. FIG. 2 is a top view of the fire net 1 shown in FIG. FIG. 3 is an external perspective view showing the external appearance of the fire net 1 according to the embodiment of the present invention. 4 is a top view of the fire net 1 shown in FIG. FIG. 5 is a front view of the fire net 1 shown in FIG.

  As shown in FIGS. 1 and 2, the fire net 1 according to the present embodiment is attached to a metal exhaust pipe 10 in an automobile (for example, a diesel automobile) traveling in a petrochemical factory, for example. 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. 3 to 5, the fire net 1 includes a net-like bag body 2 and a sheet-like magnet member 3.

The bag body 2 is formed 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 magnet member 3 is configured by a flexible magnet sheet. The magnet member 3 is formed in a band shape and is disposed on the opening 21 side on the inner surface of the bag body 2. More specifically, the magnet member 3 has an inner surface of the bag body 2 along the inner surface of the bag body 2 in a state where the one end portion 33 and the other end portion 34 in the longitudinal direction sandwich the cut portion 27. It is joined to. That is, the outer surface 32 of the magnet member 3 is joined to the inner surface of the bag body 2.

Next, how to use the fire net 1 will be described with reference to FIGS. 6 to 10 in addition to FIGS. 1 and 2.
FIG. 6 is an external perspective view showing a state in which the fire net 1 according to the present embodiment is attached to the exhaust pipe 10 of the automobile. FIG. 7 is a cross-sectional view of the fire net 1 shown in FIG. FIG. 8 is a top view showing a state where the fire net 1 is attached to the exhaust pipe 10A having a small pipe diameter. FIG. 9 is a top view showing a state where the fire net 1 is attached to the exhaust pipe 10B having a large pipe diameter.

  In mounting the fire net 1, the worker first holds the one end 33 and the other end 34 of the magnet member 3 positioned so as to sandwich the notch 27.

When the both end portions 33 and 34 of the magnet member 3 are gripped, the operator pulls the one end portion 33 and the other end portion 34 of the magnet member 3 outward (in a direction away from each other).
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, the operator can widen the opening 21 along the notch 27 by pulling the one end 33 and the other end 34 of the magnet member 3 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. 6. 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, the operator brings the inner surface 31 of the magnet member 3 into close contact with the outer peripheral surface 12 of the exhaust pipe 10.
Here, the magnet member 3 is formed in a flexible sheet shape so as to be in close contact with the outer peripheral surface 12 of the metal exhaust pipe 10. The magnet member 3 is configured such that the outer surface 32 is joined to the inner surface of the bag body 2 and the inner surface 31 is in close contact with the outer peripheral surface 12 of the exhaust pipe 10. Therefore, as shown in FIG. 7, the fire net 1 can bring the peripheral edge 28 of the opening 21 of the bag body 2 into close contact with the exhaust pipe 10 by bringing the magnet member 3 into close contact with the exhaust pipe 10.

The fire net 1 according to the present embodiment having the above-described configuration has the following effects.
A sheet-like magnet member 3 is disposed on the inner surface of the bag body 2 on the opening 21 side. Accordingly, the bag body 2 can be brought into close contact with the outer peripheral surface 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 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 magnet member 3 was comprised with the magnet sheet which has flexibility. Thereby, the adhesiveness with respect to the outer peripheral surface 12 of the exhaust pipe 10 of the fire net 1 can be improved. Therefore, it is possible to more reliably prevent fire types such as sparks discharged from the exhaust pipe 10 and high-temperature soot from spilling outside.

  Moreover, the notch part 27 extended in the sealing part 22 side from the opening part 21 of the bag body 2 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. 8, even when the pipe diameter of the exhaust pipe 10A is smaller than the diameter of the opening 21 of the fire net 1, the exhaust pipe 10A is configured such that the end portions 33 and 34 of the magnet member 3 overlap each other. The outer peripheral surface 12 is closely attached. Therefore, the fire net 1 can be mounted without causing a gap between the exhaust pipe 10 </ b> A and the peripheral edge 28 of the bag body 2.

  Further, as shown in FIG. 9, even 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 end pipes 33, 34 of the magnet member 3 are separated from each other. It is made to contact | adhere to the outer peripheral surface 12 of 10B. Therefore, the fire net 1 can be attached without causing a gap between the exhaust pipe 10B and the peripheral edge 28 of the bag body 2.

  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.

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 present embodiment, the magnet member 3 is directly adhered to the outer peripheral surface 12 of the exhaust pipe 10, but the present invention is not limited to this. That is, as shown in FIG. 10, the heat insulating material 4 is disposed on at least a part of the inner surface (contact surface with the exhaust pipe 10) 31 of the magnet member 3, and the magnet member 3 is connected to the exhaust pipe 10 through the heat insulating material 4. You may make it closely_contact | adhere to the outer peripheral surface 12. Thereby, it can suppress that the magnetic force of the magnet member 3 falls with the heat transmitted from the exhaust pipe 10. FIG.

  Moreover, in this embodiment, although the bag body 2 was comprised with the metal mesh made by knitting a stainless steel wire, it is not restricted to this. That is, you may comprise a bag body by the synthetic fiber, glass fiber, carbon fiber, etc. which have fire resistance.

  Moreover, in this embodiment, although the magnet member 3 was comprised by one magnet sheet, it is not restricted to this. That is, the magnet member 3 may be composed of a plurality of magnet sheets. Thereby, since the softness | flexibility in the opening part 21 vicinity of the fire net 1 can be improved, it becomes possible to improve the adhesiveness with respect to the outer peripheral surface 12 of the exhaust pipe 10 of the fire net 1. FIG.

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 Cut part 28 Periphery

Claims (3)

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,
An opening formed at one end, a sealing portion formed at the other end, and an exhaust port side of the exhaust pipe formed between the opening and the sealing portion. A hollow portion into which the portion is inserted and disposed,
A sheet-like magnet member that is fixed in the vicinity of the opening on the surface on the exhaust pipe side and that is attached to the outer peripheral surface of the exhaust pipe by a magnetic force so as to closely contact the outer peripheral surface along the circumferential direction of the outer peripheral surface. ,
A fire net having a predetermined length of cut from the one side to the other side at the periphery of the opening in the bag . The fireproof net according to claim 1 , wherein the bag body is formed of a wire mesh having flexibility that can be deformed according to an outer peripheral surface of the exhaust pipe having a different diameter . The inner surface of the magnet member, fire net according to claim 1 or 2 heat-insulating material is disposed.

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