JP6298553B1 - Fire extinguisher and method of manufacturing a fire extinguisher - Google Patents

Abstract

Disclosed is a fire extinguisher and a method for manufacturing a fire extinguisher that prevents a pressure resistant vessel from being damaged by use of a welded joint when a fixing material is welded to a pressure resistant vessel made of an aluminum alloy material. A fire extinguisher according to the present invention has a junction 30 mainly composed of melting of a fixing material 20 formed between the fixing material 20 and a pressure-resistant vessel 10 and has a pressure resistance when an excessive load is applied to the fixture. Before the container 10 is peeled off together with the joint portion 30, any one of peeling of the fixing material 20 from the pressure resistant container 10, breakage at the fixing material 20, and destruction of the fixture is characterized. [Selection] Figure 1

Description

  The present invention relates to a fire extinguisher and a fire extinguisher manufacturing method in which a pressure-resistant container containing a fire extinguishing agent is made of an aluminum alloy material.

  Patent Document 1 proposes that a fire extinguisher using an aluminum alloy material for a pressure-resistant container that contains a fire extinguishing agent is welded and fixed to the pressure-resistant container as a fixture.

JP 2012-161504 A

In Patent Document 1, a fixed piece is formed on a hanging tool, and the fixed piece and the pressure vessel are spot-welded. The hanging tool is firmly fixed to the pressure vessel.
However, when the pressure vessel is made of an aluminum alloy material, the strength is lower than that of a conventional general iron material. Therefore, if the hanging tool is overloaded, the pressure vessel may be damaged. is there.

  Therefore, the present invention provides a fire extinguisher and a method of manufacturing a fire extinguisher that prevents the pressure vessel from being damaged by the welding joint when the fixing material is welded to the pressure vessel made of an aluminum alloy material. Objective.

The fire extinguisher of the present invention according to claim 1 is a fire extinguisher in which a pressure-resistant container containing a fire extinguishing agent is made of an aluminum alloy material, a fixing material is welded to the pressure-resistant container, and a fixture is attached to the fixing material. In addition, when the joint mainly composed of melting of the fixing material is formed between the fixing material and the pressure vessel, the pressure vessel is peeled off together with the joint when the fixture is overloaded. Before the fixing material is peeled off from the pressure vessel, the fixing material is broken, the fixing material is detached from the fixture, or the fixture is broken. .
According to a second aspect of the present invention, in the fire extinguisher according to the first aspect, the fixing member is made of a material different from that of the pressure vessel.
A third aspect of the present invention is the fire extinguisher according to the first aspect, wherein the fixing member is made of a softer material than the pressure vessel.
According to a fourth aspect of the present invention, in the fire extinguisher according to any one of the first to third aspects, a groove or a notch is formed in the fixing material.
The present invention according to claim 5 is the fire extinguisher according to claim 4, wherein the groove is a spiral groove.
A sixth aspect of the present invention is the fire extinguisher according to any one of the first to fifth aspects, wherein the attachment is made of a resin material.
According to a seventh aspect of the present invention, in the fire extinguisher according to any one of the first to sixth aspects, the inner surface of the pressure-resistant container does not cause a mark due to the joint portion.
The present invention according to claim 8 is the fire extinguisher according to any one of claims 1 to 7, wherein the mounting tool is at least one of a hanging tool, a hose receiving tool, and a saddle. To do.
The method for manufacturing a fire extinguisher according to claim 9 is a method for manufacturing a fire extinguisher in which a pressure-resistant container containing a fire-extinguishing agent is made of an aluminum alloy material, and a fixing material for attaching a fixture is welded to the pressure-resistant container. In the abutting step of abutting the fixing material against the pressure-resistant container, a melting step of melting the fixing material by energizing the fixing material after the abutting step, and at least the melting step A pressing step of pressing the fixing material against the pressure vessel, and in the abutting step, the fixing material axis of the fixing material is disposed toward the virtual container axis of the pressure vessel, and the pressing step Then, the fixing material is pressed toward the virtual container axis of the pressure-resistant container.
The present invention according to claim 10 is characterized in that, in the method for manufacturing a fire extinguisher according to claim 9, the joint formed mainly by melting of the fixing material does not reach the inner surface of the pressure vessel. To do.
According to the eleventh aspect of the present invention, in the method for manufacturing a fire extinguisher according to the ninth or tenth aspect, the outer surface of the pressure vessel is soiled at least at a position where the fixing material is abutted before the abutting step. And a foreign matter removing step for removing rust and rust.
The invention according to claim 12 is the method for manufacturing a fire extinguisher according to any one of claims 9 to 11, further comprising a coating step of coating the outer surface of the pressure-resistant container after the pressing step. Features.
According to a thirteenth aspect of the present invention, in the method for manufacturing a fire extinguisher according to any one of the ninth to twelfth aspects, an aluminum antiseptic resin layer is formed on the inner surface of the pressure-resistant container before the contact step. It has the resin layer formation process, It is characterized by the above-mentioned.
The present invention according to claim 14 is the method for manufacturing a fire extinguisher according to claim 9, wherein the fixing material includes a first fixing material and a second fixing material, After performing the contact step, the melting step, and the pressing step, the pressure vessel is rotated by a predetermined angle, and after the pressure vessel is rotated by the predetermined angle, the contact with the second fixing member is performed. The contact process, the melting process, and the pressing process are performed.

  According to the fire extinguisher of the present invention, when an excessive weight is applied to the fixture, the pressure resistant container does not peel off together with the joint portion, and safety during use can be improved.

1 is a block diagram of a fire extinguisher and a pressure vessel according to an embodiment of the present invention. Explanatory drawing which shows the welding joint of the fixing material in the fire extinguisher Explanatory drawing which shows the welding joining of several fixing materials in the fire extinguisher The principal part perspective view which shows the fire extinguisher which joined two fixing materials Explanatory drawing which shows the case where excessive weight is added to the fixture in the fire extinguisher The principal part perspective view which shows the fire extinguisher which attached the hanging tool to the fixing material as a fixture The block diagram which shows the hanging tool as the fixture which is attached to the same fire extinguisher Explanatory drawing which shows the attachment method of the fixture to the fixing material in the fire extinguisher Explanatory drawing which shows the case where excessive weight is added to the fixture in the fire extinguisher

In the fire extinguisher according to the first embodiment of the present invention, when the joint mainly composed of the melting of the fixing material is formed between the fixing material and the pressure vessel, and the fixture is overloaded, the pressure vessel Before peeling with the joint portion, any one of peeling of the fixing material from the pressure vessel, breakage at the fixing material, detachment of the fixing material from the fixture, and destruction of the fixture occurs. According to the present embodiment, when an excessive load is applied to the fixture, the pressure resistant container does not peel off together with the joint portion, and safety during use can be improved.

  In the fire extinguisher according to the first embodiment, the second embodiment of the present invention is such that the fixing material is made of a material different from that of the pressure vessel. According to the present embodiment, by making the material of the fixing material and the pressure vessel different, the joint strength at the joint is lower than that of the same material, so the columnar portion is easily peeled off from the pressure vessel. The pressure vessel can be prevented from peeling off together with the joint.

  In the fire extinguisher according to the first embodiment, the third embodiment of the present invention is such that the fixing material is softer than the pressure resistant container. According to the present embodiment, the fixing material is made of a softer material than the pressure vessel, so that the columnar portion can be easily broken and the pressure vessel can be prevented from being peeled off together with the joint portion.

  According to a fourth embodiment of the present invention, in the fire extinguisher according to any one of the first to third embodiments, a groove or a notch is formed in the fixing material. According to the present embodiment, by forming a groove or a notch in the columnar part, the columnar part can be easily broken, and the pressure vessel can be prevented from being peeled off together with the joint part.

  The fifth embodiment of the present invention is a fire extinguisher according to the fourth embodiment, wherein the groove is a spiral groove. According to the present embodiment, since the groove is a spiral groove, the columnar portion can be used as a screw material, and the fixture can be easily attached to the fixing material.

  The sixth embodiment of the present invention is a fire extinguisher according to any one of the first to fifth embodiments, and the fixture is made of a resin material. According to the present embodiment, the fixture is made of a resin material, so that the fixture is easily broken and the pressure vessel can be prevented from being peeled off together with the joint portion.

  The seventh embodiment of the present invention is a fire extinguisher according to any one of the first to sixth embodiments, and does not cause a mark due to the joint on the inner surface of the pressure vessel. According to the present embodiment, since the separation between the joint portion and the pressure vessel is likely to occur, the pressure vessel can be prevented from being peeled off together with the joint portion.

  An eighth embodiment of the present invention is a fire extinguisher according to any one of the first to seventh embodiments, wherein the mounting tool is at least one of a hanging tool, a hose receiving tool, and a saddle. It is. According to the present embodiment, it is possible to easily attach the hanging tool, the hose receiving tool, and the hook.

  A fire extinguisher manufacturing method according to a ninth embodiment of the present invention includes a contact step of bringing a fixing material into contact with a pressure resistant container, and a melting that melts the fixing material by energizing the fixing material after the contact step. And a pressing step for pressing the fixing material against the pressure vessel at least in the melting step, and in the contact step, the fixing material axis of the fixing material is arranged toward the virtual container axis of the pressure vessel, and pressing In the process, the fixing material is pressed toward the virtual container axis of the pressure resistant container. According to the present embodiment, since the welding of the fixing material to the curved surface can be reliably and stably performed, it is possible to prevent the pressure vessel and the joint from becoming excessively strong.

  The tenth embodiment of the present invention is a method for manufacturing a fire extinguisher according to the ninth embodiment, in which the joint formed mainly by melting of the fixing material does not reach the inner surface of the pressure vessel. It is. According to the present embodiment, since the separation between the joint portion and the pressure vessel is likely to occur, the pressure vessel can be prevented from being peeled off together with the joint portion.

  The eleventh embodiment of the present invention is a method of manufacturing a fire extinguisher according to the ninth or tenth embodiment, and at least before the abutting step, the outer surface of the pressure vessel at a position where the fixing material abuts at least. It has a foreign matter removing step for removing dirt and rust. According to the present embodiment, it is possible to reliably and stably perform the welding joining of the fixing material, thereby preventing the pressure vessel and the joining portion from becoming excessively strong joining or incomplete joining. it can.

  A twelfth embodiment of the present invention is a method for manufacturing a fire extinguisher according to any one of the ninth to eleventh embodiments, and includes a coating step of coating the outer surface of the pressure-resistant container after the pressing step. Is. According to the present embodiment, there is no influence on the melting process by coating, and the fixing material can be coated together.

  A thirteenth embodiment of the present invention is a method for manufacturing a fire extinguisher according to any of the ninth to twelfth embodiments, wherein an aluminum preservative resin layer is formed on the inner surface of the pressure resistant container before the contact step. It has a resin layer formation process to form. According to the present embodiment, the aluminum antiseptic resin layer can be formed on the inner surface of the pressure vessel in advance.

  The fourteenth embodiment of the present invention is a method for manufacturing a fire extinguisher according to the ninth embodiment, and has a first fixing member and a second fixing member as fixing members, and the first fixing member includes On the other hand, after performing the contact process, the melting process, and the pressing process, the pressure container is rotated by a predetermined angle, and after the pressure container is rotated by a predetermined angle, the contact process and the melt process are performed on the second fixing material. And a pressing step. According to the present embodiment, in the contact step, the fixing material axis of the fixing material is arranged toward the virtual container axis of the pressure vessel, and in the pressing step, the fixing material is directed to the virtual container axis of the pressure vessel. Therefore, positioning is easy by rotating the pressure vessel, and welding of a plurality of fixing materials can be performed in a short time.

Hereinafter, a fire extinguisher according to an embodiment of the present invention will be described.
FIG. 1 is a configuration diagram of a fire extinguisher and a pressure vessel according to the present embodiment.
Fig.1 (a) is the front view which made a part of fire extinguisher by a present Example a cross section.
As shown to Fig.1 (a), the fire extinguisher by a present Example displays the pressure vessel 10 which accommodates a fire extinguishing agent, the siphon pipe | tube 1 arrange | positioned inside the pressure vessel 10, and the pressure in the pressure vessel 10 Pressure gauge 2, valve rod 3 arranged at the upper end of siphon tube 1, lever 4 for operating valve rod 3, hose 5 for jetting fire extinguishing agent by operating lever 4, and provided at the tip of hose 5 The nozzle 6 and the flange 7 that covers the lower part of the pressure vessel 10 are provided.
The siphon tube 1 is disposed on the virtual container axis X of the pressure vessel 10.
The pressure vessel 10 is made of an aluminum alloy material, and an aluminum antiseptic resin layer 11 is formed on the inner surface of the pressure vessel 10. The aluminum antiseptic resin layer 11 is formed by resin molding, but may be formed by painting. A powder drug or a liquid drug is sealed inside the pressure vessel 10.

FIG.1 (b) is a front view of the pressure-resistant container of the fire extinguisher by a present Example.
As shown in FIG. 1 (b), the pressure vessel 10 has a cylindrical body 12, a shoulder 14 from the body 12 to the opening 13, and a bottom 15 that forms the lower part of the body 12. And is formed. The shoulder portion 14 and the bottom portion 15 are formed in a truncated cone shape.

FIG. 2 is an explanatory view showing welding joining of fixing materials in the fire extinguisher.
2A shows the welding joint position of the fixing material, FIG. 2B shows the contact step, FIG. 2C shows the melting step, and FIG. 2D shows the pressing step. FIGS. 2B, 2C, and 2D are top views of the fire extinguisher as viewed from above.
As shown in FIG. 2A, the fixing material 20 is joined to the trunk 12 of the pressure vessel 10.
As shown in FIG. 2B, the fixing material 20 includes a columnar portion 21 and a protrusion 22 formed at one end of the columnar portion 21. Moreover, as shown in the drawing, it is preferable that one end of the columnar portion 21 where the protrusion 22 is formed has an enlarged portion 23 having a larger diameter than the columnar portion 21.
The welding joining of the fixing member 20 to the body portion 12 is performed in the order of the contact step, the melting step, and the pressing step.

As shown in FIG. 2B, in the contact step, the fixing material 20 is brought into contact with the pressure vessel 10.
The fixing member 20 is arranged with the fixing member axis Y of the fixing member 20 facing the virtual container axis X (see FIG. 1) of the pressure vessel 10.
Thereafter, as shown in FIG. 2C, in the melting step, an electric current is supplied to the fixing material 20 to generate an arc at the protruding portion 22 formed at the end of the fixing material 20, and the protruding portion 22 is mainly melted. .
Then, as shown in FIG. 2D, in the pressing step, the fixing material 20 is pressed against the pressure vessel 10. The fixing member 20 is pressed toward the virtual container axis X of the pressure resistant container 10. This pressing step is performed in the abutting step, or in the abutting step and the melting step, but it is preferable that the pressing step is continued after the end of energization in the melting step. For such welding, a CD (Capacitor Discharge) stud welding method can be used.
As shown in FIG. 2 (d), a joining portion 30 mainly composed of melting of the protruding portion 22 is formed between one end of the columnar portion 21 and the pressure vessel 10. The joint portion 30 is formed by melting a part of the enlarged portion 23 and a part of the pressure vessel 10 in addition to the protruding portion 22, but there is no trace due to the joint portion 30 on the inner surface of the pressure vessel 10.
According to the present embodiment, since the welding of the fixing member 20 to the curved surface can be reliably and stably performed, it is possible to prevent the pressure vessel 10 and the joint portion 30 from being excessively strong.

In addition, before the contact process shown in FIG. 2B, an aluminum preserving resin layer is previously formed on the inner surface of the pressure resistant container 10 by including a resin layer forming step for forming the aluminum preserving resin layer 11 on the inner surface of the pressure resistant container 10. 11 can be formed.
Further, before the abutting step shown in FIG. 2B, there is a foreign matter removing step for removing dirt and rust on the outer surface of the pressure-resistant container 10 at least at a position where the fixing material 20 abuts. By having the foreign matter removing step, the welding joint of the fixing material 20 can be reliably and stably performed, and the pressure vessel 10 and the joint portion 30 become an excessively strong joint or an incomplete joint. Can be prevented.
In addition, after the pressing step shown in FIG. 2D, the coating process for coating the outer surface of the pressure-resistant vessel 10 has no influence on the melting process by the coating, and the fixing material 20 can be applied together.

FIG. 3 is an explanatory view showing welding joining of a plurality of fixing materials in the fire extinguisher.
3A and 3B show the joining of the first fixing material, and FIGS. 3C and 3D show the joining of the second fixing material. 3 (a) and 3 (c) are top views of the pressure vessel, and FIGS. 3 (b) and 3 (d) are main part front views of the pressure vessel.
As shown in FIGS. 3A and 3B, after the contact process, the melting process, and the pressing process are performed on the first fixing member 20A, the pressure vessel 10 is rotated by a predetermined angle.
After rotating the pressure vessel 10 by a predetermined angle, as shown in FIGS. 3C and 3D, the contact process, the melting process, and the pressing process are performed on the second fixing member 20B.
In the abutting process, the fixing material axis Y of the fixing material 20 is arranged toward the virtual container axis X of the pressure-resistant container 10, and in the pressing process, the fixing material 20 is directed toward the virtual container axis X of the pressure-resistant container 10. Since it presses, positioning is easy by rotating the pressure-resistant container 10, and the welding joining of the some fixing material 20 can be performed in a short time.

FIG. 4 is a perspective view showing a main part of the fire extinguisher in which two fixing materials are joined.
The first fixing member 20A and the second fixing member 20B are joined to the upper portion of the body 12 at the same height. The fixing member 20 is preferably provided on the body portion 12 as in this embodiment, but can also be provided on the shoulder portion 14 or the bottom portion 15 shown in FIG. Moreover, when providing the 1st fixing material 20A and the 2nd fixing material 20B, although providing in the same height is preferable, it can also arrange | position on the same perpendicular line.

FIG. 5 is an explanatory view showing a case where an excessive weight is applied to the fixture in the fire extinguisher.
FIG. 5A shows a state in which the columnar portion 21 is peeled from the pressure vessel 10 when the fixing material 20 is overloaded.
In the fire extinguisher according to the present embodiment, when an excessive weight is applied to the fixing member 20, before the part of the pressure vessel 10 is peeled off together with the joint portion 30 as shown in FIG. As shown, the columnar portion 21 peels from the pressure vessel 10.
Thus, in order to prevent the columnar portion 21 from being peeled off from the pressure vessel 10 and to prevent the pressure vessel 10 from being peeled off together with the joint portion 30, the fixing material 20 is made of a material different from that of the pressure vessel 10. By making the material of the fixing material 20 and the pressure vessel 10 different, the bonding strength at the bonding portion 30 can be lowered as compared with the case where the same material is used.
Further, in order to prevent the columnar portion 21 from being peeled off from the pressure vessel 10 and to prevent the pressure vessel 10 from being peeled off together with the joint portion 30, the fixing member 20 is made of a softer material than the pressure vessel 10. By making the fixing material 20 a softer material than the pressure vessel 10, the columnar portion 21 is easily broken.
For example, the pressure vessel 10 is made of aluminum 3000 series (Al-Mn series: aluminum manganese alloy), and the fixing material 20 is made of aluminum 1000 series (pure aluminum series), so that the material of the fixing material 20 and the pressure vessel 10 is made. Or the fixing member 20 can be made of a softer material than the pressure vessel 10.

FIG. 5B shows a state in which the columnar portion 21 is broken when the fixing material 20 is overloaded.
In the fire extinguisher according to the present embodiment, when excessive weight is applied to the fixing member 20, before the part of the pressure vessel 10 is peeled off together with the joint portion 30 as shown in FIG. As shown, the columnar portion 21 is broken.
Thus, in order to prevent the pressure vessel 10 from being peeled off together with the joint portion 30 easily at the columnar portion 21, grooves or notches are formed in the columnar portion 21. By forming a groove or notch in the columnar part 21, stress concentration occurs in the groove or notch, and breakage tends to occur. The groove is preferably a spiral groove. By setting it as a spiral groove, the columnar part 21 can be utilized as a screw material, and it is easy to attach a fixture to the fixing material 20.

FIG. 6 is a main part perspective view showing the fire extinguisher in which a hanging tool is attached to a fixing member as an attachment tool.
The fire extinguisher of the present embodiment uses the first fixing member 20A and the second fixing member 20B joined to the upper portion of the trunk 12 to attach the hanging tool 40 for fixing at the installation location.
The hanging tool 40 includes a pair of leg portions 41A and 41B and a connecting portion 42 that connects the pair of leg portions 41A and 41B.
The pair of legs 41 </ b> A and 41 </ b> B abut against the pressure vessel 10, and a space 43 is formed between the connecting portion 42 and the pressure vessel 10.
The fire extinguisher is fixed at the installation location by inserting a protruding piece provided on the wall surface or the container into the space 43.

FIG. 7 is a configuration diagram showing a hanging tool as an attachment attached to the fire extinguisher.
7A is a cross-sectional top view of the hanging tool body, FIG. 7B is a front view of the hanging tool body, FIG. 7C is a front view of a nut used in the hanging tool, and FIG. Is a bottom view of the nut, FIG. 7E is a top sectional view of the hook, and FIG. 7F is a front view of the hook.
The hanging tool 40 includes a hanging tool main body shown in FIGS. 7 (a) and 7 (b), a nut 44 shown in FIGS. 7 (c) and 7 (d), and FIGS. 7 (e) and 7 (f). And a cap 45 shown in FIG.
The hanging tool main body connects the first leg 41A that forms the first insertion hole 46A, the second leg 41B that forms the second insertion hole 46B, and the first leg 41A and the second leg 41B. The connecting portion 42 is formed.
The first insertion hole 46A and the second insertion hole 46B are elongated holes.
The nut 44 is preferably a push nut. By using the first nut 44A and the second nut 44B as push nuts, the first fixing member 20A and the second fixing member 20B can be easily inserted, and can be reliably prevented from coming off after insertion.

A first nut space 47A in which the first nut 44A can be displaced is formed between the first insertion hole 46A and the first cap 45A, and a second nut is formed between the second insertion hole 46B and the second cap 45B. A second nut space 47B in which the nut 44B can be displaced is formed.
In this way, by forming the first nut space 47A and the second nut space 47B by the first cap 45A and the second cap 45B, the first cap 45A and the second cap 45B are removed, so that the pressure resistance of the hanging tool 40 is increased. Removal from the container 10 can be easily performed.
The first nut 44A is disposed to face the first insertion hole 46A, and the second nut 44B is disposed to face the second insertion hole 46B.
The hanging tool 40 is preferably a resin material. By using the hanging tool 40 as a resin material, the connecting portion 42 can be easily elastically deformed.

FIG. 8 is an explanatory view showing a method of attaching the fixture to the fixing member in the fire extinguisher.
8 (a) to 8 (d) are cross-sectional views of the main part of the upper surface sequentially showing the stage of attachment, FIG. 8 (e) is a front view of the hanging tool in the state of FIG. 8 (a), and FIG. f) is a front view of the hanging tool in the state of FIG. In FIG. 8, illustration of the first cap 45A and the second cap 45B described in FIG. 7 is omitted.
As shown in FIG. 8A, the first fixing member 20A is inserted through the first insertion hole 46A and the first nut 44A, and the second fixing member 20B is inserted through the second insertion hole 46B and the second nut 44B. To do.
From the root interval LX between the first joint end 20AX of the first fixing member 20A and the second joint end 20BX of the second fixing member 20B, the first tip 20AY of the first fixing member 20A and the second fixing member 20B The tip end distance LY from the second tip end 20BY is wider.
Accordingly, the first nut 44A is displaced in the direction of the arrow a1 with respect to the first insertion hole 46A by the insertion state of the first fixing member 20A with respect to the first insertion hole 46A, and the second nut 44B is displaced to the second insertion hole. Due to the insertion state of the second fixing member 20B with respect to 46B, it is displaced in the direction of the arrow a2 with respect to the second insertion hole 46B.

FIG. 8B shows a state in which the hanging tool 40 is in contact with the pressure resistant container 10.
The connecting portion 42 can be elastically deformed, and the interval between the first leg portion 41A and the second leg portion 41B can be changed.
In the state of FIG. 8B, the outer side of the first leg 41A and the outer side of the second leg 41B are in contact with the pressure resistant container 10, but the inner side of the first leg 41A and the second leg. There is a gap between the inside of the portion 41B and the pressure vessel 10.
That is, the virtual curvature at the contact surface where the first leg portion 41 </ b> A and the second leg portion 41 </ b> B are in contact with the pressure resistant container 10 is made larger than the container curvature of the pressure resistant container 10. By making the virtual curvature larger than the container curvature, it is easy to press the hanging tool 40 against the pressure vessel 10, and the first leg portion 41 </ b> A and the second leg are in a state in which a reaction force is exerted in the direction of pulling the hanging device 40 away from the pressure vessel 10. The contact surface with the portion 41B can be brought into close contact with the pressure vessel 10 without any gap.

In the state of FIG. 8B, the space between the first leg 41A and the second leg 41B is widened by pressing the connecting part 42 in the direction of the arrow b1 and pressing the hanging tool 40 against the pressure vessel 10. A force is applied in the direction, and the inner side of the first leg portion 41A and the inner side of the second leg portion 41B are in contact with the pressure-resistant container 10 (FIG. 8C).
When the inner side of the first leg portion 41A and the inner side of the second leg portion 41B are in contact with the pressure resistant container 10, the first fixing member 20A is further pushed into the first nut 44A, and the second fixing member 20B is the second fixing member 20B. Further pushed into the two nuts 44B (FIG. 8D).
When the pressing in the direction of the arrow b1 shown in FIG. 8B is released, the force in the direction in which the distance between the first leg portion 41A and the second leg portion 41B is reduced pulls the hanging tool 40 away from the pressure vessel 10 ( It acts as a reaction force in the direction of the arrow c1 shown in FIG.

  FIG. 8D shows a state where the attachment of the hanging tool 40 to the pressure vessel 10 is completed. In this state, since the reaction force in the direction of the arrow b1 shown in FIG. 8C is always applied, the hanging tool 40 does not rattle.

As shown in FIGS. 8E and 8F, the first nut 44A is displaced with respect to the first insertion hole 46A by the insertion state of the first fixing member 20A with respect to the first insertion hole 46A. The 2 nut 44B is displaced with respect to the second insertion hole 46B by the insertion state of the second fixing member 20B with respect to the second insertion hole 46B.
In FIG. 8E, the arrow e1 indicates the displacement direction of the first nut 44A, and the arrow e2 indicates the displacement direction of the second nut 44B.

Thus, the displacement of the first nut 44A and the second nut 44B causes the first tip portion 20AY and the second tip portion 20BY to be based on the root interval LX between the first joint end portion 20AX and the second joint end portion 20BX. The hanging tool 40 can be smoothly attached to the first fixing member 20A and the second fixing member 20B having a wide tip end interval LY.
By forming grooves or notches in the first fixing material 20A and the second fixing material 20B, it is possible to reliably engage the first nut 44A and the second nut 44B.
In FIG. 8, spiral grooves are formed in the first fixing member 20A and the second fixing member 20B, and the first fixing member 20A and the second fixing member 20B are used as screw members by forming the spiral groove. Thus, the engagement between the first nut 44A and the second nut 44B can be ensured.

FIG. 9 is an explanatory view showing a case where an excessive weight is applied to the fixture in the fire extinguisher.
FIG. 9A shows a state in which the columnar portion 21 is peeled from the pressure resistant container 10 when an excessive weight is applied to the hanging tool 40 as the mounting tool.
In the fire extinguisher according to the present embodiment, when an excessive weight is applied to the hanging tool 40, the first portion of the pressure vessel 10 is removed from the pressure vessel 10 as shown in FIG. The columnar portions 21 of the fixing material 20A and the second fixing material 20B are peeled off.
As described above, the columnar portion 21 is made of a material different from that of the pressure resistant vessel 10 in order to prevent the pressure resistant vessel 10 from being peeled off together with the joint portion 30 because the columnar portion 21 is easily peeled off from the pressure resistant vessel 10. By making the material of the columnar portion 21 and the pressure vessel 10 different, the bonding strength at the bonding portion 30 can be lowered as compared with the case where the same material is used.
Further, the columnar portion 21 is made of a material softer than the pressure resistant vessel 10 in order to prevent the pressure resistant vessel 10 from being peeled off together with the joint portion 30 because the columnar portion 21 is easily peeled off from the pressure resistant vessel 10. By making the columnar part 21 a softer material than the pressure vessel 10, the columnar part 21 is easily broken.
For example, the pressure vessel 10 is made of aluminum 3000 series (Al-Mn series: aluminum manganese alloy) and the columnar portion 21 is made of aluminum 1000 series (pure aluminum series), so that the material of the columnar portion 21 and the pressure vessel 10 is made. Or the columnar portion 21 can be made of a softer material than the pressure vessel 10.

FIG. 9B shows a state in which the columnar portion 21 is broken when an overload is applied to the hanging tool 40 as the fixture.
In the fire extinguisher according to the present embodiment, when an overload is applied to the hanging tool 40 as a fixture, before the pressure-resistant container 10 is partly peeled off together with the joint portion 30, as shown in FIG. 21 breaks.
Thus, in order to prevent the pressure vessel 10 from being peeled off together with the joint portion 30 easily at the columnar portion 21, grooves or notches are formed in the columnar portion 21. By forming a groove or notch in the columnar part 21, stress concentration occurs in the groove or notch, and breakage tends to occur. The groove is preferably a spiral groove. By setting it as a spiral groove, the columnar part 21 can be utilized as a screw material, and it is easy to attach a fixture to the columnar part 21.

FIG. 9C shows a state in which the first fixing member 20A and the second fixing member 20B are detached from the first nut 44A and the second nut 44B when an overload is applied to the hanging tool 40 as the attachment tool. Yes.
In the fire extinguisher according to the present embodiment, when excessive weight is applied to the hanging tool 40 as the fixture, the first portion as shown in FIG. The fixing member 20A and the second fixing member 20B are detached from the first nut 44A and the second nut 44B.
As described above, the first fixing member 20A and the second fixing member 20B are easily separated from the first nut 44A and the second nut 44B, and the pressure vessel 10 is prevented from being peeled off together with the joint portion 30. A groove or notch in the fixing material 20A and the second fixing material 20B is shallowly formed.

FIG. 9D shows a state in which the hanging tool 40 is destroyed when an excessive weight is applied to the hanging tool 40 as the mounting tool.
In the fire extinguisher according to the present embodiment, when an excessive load is applied to the hanging tool 40 as the mounting tool, before the part of the pressure-resistant container 10 is peeled off together with the joint portion 30, as shown in FIG. 40 destroys.
Thus, in order to prevent the hanger 40 from being easily broken and to prevent the pressure vessel 10 from being peeled off together with the joint portion 30, the hanger 40 is made of a resin material.
Note that, when an overload is applied to the hanging tool 40 as the fixture, before the pressure vessel 10 is peeled off together with the joint portion 30, the columnar portion 21 is peeled off from the pressure vessel 10, the fracture at the columnar portion 21, the first Any one may be used as long as it causes at least one of the separation of the first fixing member 20A and the second fixing member 20B from the nut 44A and the second nut 44B and the breakage of the hanging tool 40, but two or more are generated. By doing so, safety during use can be enhanced.
In the present embodiment, the mounting tool is described as the hanging tool 40. However, the hose holder or the hook 7 for fixing the hose 5 or the nozzle 6 shown in FIG. By using it, the hose holder and the flange 7 can be easily attached.

Although the present invention is suitable for a pressure vessel made of an aluminum alloy material, a pressure vessel formed by extruding magnesium, copper, iron, and an alloy ingot thereof, or a pressure vessel formed by welding a stainless steel plate Even applicable.
In the present invention, the fixture is welded to the pressure vessel using the fixing material. However, the fixture is welded and fixed to the pressure vessel without using the fixing material, and a weld is formed by this welding fixation. When an overload is applied to the fixture, the fixture may be peeled off or broken from the pressure vessel before the pressure vessel is peeled off together with the joint. It may not be an alloy material.

DESCRIPTION OF SYMBOLS 10 Pressure-resistant container 11 Aluminum antiseptic resin layer 12 Trunk part 13 Opening part 14 Shoulder part 15 Bottom part 20 Fixing material 20A 1st fixing material 20B 2nd fixing material 21 Columnar part 22 Projection part 23 Enlarged part 30 Joining part 40 Hanging tool 41A Leg part 41B Leg part 42 Connection part 43 Space part 44 Nut 44A 1st nut 44B 2nd nut 45A 1st cap 45B 2nd cap 46A 1st insertion hole 46B 2nd insertion hole 47A 1st nut space 47B 2nd nut space X Virtual container Axis center Y Fixed material axis LX Root spacing LY Tip spacing

Claims (14)

The pressure vessel that contains the fire extinguishing agent is made of aluminum alloy material,
A fixing material is welded to the pressure vessel,
A fire extinguisher for attaching a fixture to the fixing material,
A joint mainly composed of melting of the fixing material is formed between the fixing material and the pressure vessel,
When the fixture is overloaded, before the pressure vessel is peeled off together with the joint, the fixing material is peeled off from the pressure vessel, broken at the fixing material, and the fixing material from the fitting. A fire extinguisher characterized in that it causes either of detachment or destruction of the fixture. The fire extinguisher according to claim 1, wherein the fixing material is made of a material different from that of the pressure vessel. The fire extinguisher according to claim 1, wherein the fixing member is made of a softer material than the pressure vessel. The fire extinguisher according to any one of claims 1 to 3, wherein a groove or a notch is formed in the fixing material. The fire extinguisher according to claim 4, wherein the groove is a spiral groove. The fire extinguisher according to any one of claims 1 to 5, wherein the fixture is a resin material. The fire extinguisher according to any one of claims 1 to 6, wherein a mark due to the joint portion is not formed on an inner surface of the pressure vessel. The fire extinguisher according to any one of claims 1 to 7, wherein the fitting is at least one of a hanging tool, a hose receiving tool, and a saddle. The pressure vessel that contains the fire extinguishing agent is made of aluminum alloy material,
A method of manufacturing a fire extinguisher in which a fixing material for attaching a fixture is welded to the pressure vessel,
A contact step of bringing the fixing material into contact with the pressure vessel;
After the contact step, a melting step of melting the fixing material by energizing the fixing material;
At least in the melting step, having a pressing step of pressing the fixing material against the pressure vessel,
In the contact step, the fixing material axis of the fixing material is arranged toward the virtual container axis of the pressure vessel,
In the pressing step, the fixing material is pressed toward the virtual container axis of the pressure resistant container. The method for manufacturing a fire extinguisher according to claim 9, wherein a joint portion formed mainly by melting of the fixing material does not reach the inner surface of the pressure-resistant container. The fire extinguishing according to claim 9 or 10, further comprising a foreign matter removing step for removing dirt and rust on the outer surface of the pressure vessel at least at a position where the fixing material is abutted, before the abutting step. Manufacturing method. The method for manufacturing a fire extinguisher according to any one of claims 9 to 11, further comprising a coating step of coating the outer surface of the pressure vessel after the pressing step. The method for manufacturing a fire extinguisher according to any one of claims 9 to 12, further comprising a resin layer forming step of forming an aluminum antiseptic resin layer on an inner surface of the pressure vessel before the contact step. . As the fixing material, it has a first fixing material and a second fixing material,
After performing the contact step, the melting step, and the pressing step on the first fixing material, the pressure vessel is rotated by a predetermined angle,
The fire extinguisher according to claim 9, wherein the contact step, the melting step, and the pressing step are performed on the second fixing member after the pressure vessel is rotated by the predetermined angle. Production method.