CN110312553B - Fire extinguisher and method for manufacturing fire extinguisher - Google Patents
Fire extinguisher and method for manufacturing fire extinguisher Download PDFInfo
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- CN110312553B CN110312553B CN201880011817.5A CN201880011817A CN110312553B CN 110312553 B CN110312553 B CN 110312553B CN 201880011817 A CN201880011817 A CN 201880011817A CN 110312553 B CN110312553 B CN 110312553B
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- pressure vessel
- fire extinguisher
- fixing member
- fixture
- pressure
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
- A62C13/62—Portable extinguishers which are permanently pressurised or pressurised immediately before use with a single permanently pressurised container
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62C—FIRE-FIGHTING
- A62C13/00—Portable extinguishers which are permanently pressurised or pressurised immediately before use
- A62C13/76—Details or accessories
- A62C13/78—Suspending or supporting devices
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- Health & Medical Sciences (AREA)
- Public Health (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Filling Or Discharging Of Gas Storage Vessels (AREA)
- Pressure Vessels And Lids Thereof (AREA)
Abstract
Provided are a fire extinguisher and a method for manufacturing the fire extinguisher, wherein when a fixing member is welded and connected to a pressure-resistant container made of an aluminum alloy material, the pressure-resistant container is not damaged by the welding and connection during use. The fire extinguisher is characterized in that a joint part (30) which mainly takes melting of a fixing member (20) is formed between the fixing member (20) and a pressure vessel (10), and when an excessive load is applied to an installation member, any of peeling of the fixing member (20) from the pressure vessel (30), breaking at the fixing member (20), separation of the fixing member (20) from the installation member, and breakage of the installation member occurs before the pressure vessel (10) and the joint part (30) are peeled together.
Description
Technical Field
The present invention relates to a fire extinguisher having a pressure-resistant container for containing a fire extinguishing chemical made of an aluminum alloy material, and a method for manufacturing the fire extinguisher.
Background
Documents of the prior art
Patent document
Patent document 1: japanese laid-open patent publication No. 2012-161504
Disclosure of Invention
Technical problem to be solved by the invention
However, when the pressure vessel is made of an aluminum alloy material, the strength is lower than that of a conventional general iron material, and therefore, if an excessive load is applied to the hanger, the pressure vessel may be damaged.
Accordingly, an object of the present invention is to provide a fire extinguisher and a method for manufacturing a fire extinguisher, in which, when a fixing member is welded and joined to a pressure vessel made of an aluminum alloy material, the pressure vessel is not broken by the welding and joining at the time of use。
Solution for solving the above technical problem
The fire extinguisher according to claim 1 of the present invention is a fire extinguisher in which a pressure vessel containing a fire extinguishing chemical is made of an aluminum alloy material, a fixing member is welded to the pressure vessel, and a mounting member is attached to the fixing member, wherein a joint portion mainly obtained by melting the fixing member is formed between the fixing member and the pressure vessel, and when an excessive load is applied to the mounting member, any of peeling of the fixing member from the pressure vessel, breaking of the fixing member, detachment of the fixing member from the mounting member, and breakage of the mounting member occurs before the pressure vessel is peeled off together with the joint portion.
The invention described in claim 2 is the fire extinguisher according to claim 1, wherein the fixing member is made of a material different from that of the pressure vessel.
The invention described in claim 3 is the fire extinguisher according to claim 1, wherein the fixing member is made of a material softer than the pressure vessel.
The invention described in claim 4 is the fire extinguisher according to any one of claims 1 to 3, wherein a groove or a notch is formed in the fixing member.
The invention described in claim 5 is characterized in that, in the fire extinguisher described in claim 4, the groove is a spiral groove.
The invention described in claim 6 is the fire extinguisher according to any one of claims 1 to 5, wherein the attachment member is made of a resin material.
The invention described in claim 7 is the fire extinguisher according to any one of claims 1 to 6, wherein no trace is generated on an inner surface of the pressure vessel by the joint portion.
The invention described in claim 8 is the fire extinguisher according to any one of claims 1 to 7, wherein the attachment member is at least one of a hanger, a hose support member, and a skirt.
A method of manufacturing a fire extinguisher according to the present invention as set forth in claim 9 is a method of manufacturing a fire extinguisher in which a pressure vessel containing a fire extinguishing chemical is made of an aluminum alloy material, and a fixing member for attaching an attachment member is welded to the pressure vessel, the method including: an abutment step of abutting the fixing member to the pressure vessel; a melting step of melting the fixture by energizing the fixture after the abutting step; a pressing step of pressing the fixture toward the pressure vessel at least in the melting step, wherein in the abutting step, a fixture axis of the fixture is arranged toward a virtual vessel axis of the pressure vessel, and in the pressing step, the fixture is pressed toward the virtual vessel axis of the pressure vessel.
The invention described in claim 10 is characterized in that, in the method of manufacturing a fire extinguisher described in claim 9, the joint portion formed mainly by melting of the fixing member does not reach the inner surface of the pressure vessel.
The invention described in claim 11 is the method of manufacturing a fire extinguisher according to claim 9 or claim 10, including a foreign matter removal step of removing at least dirt or rust on an outer surface of the pressure vessel at a position where the pressure vessel abuts against the anchor, before the abutment step.
The invention described in claim 12 is the method of manufacturing a fire extinguisher according to any one of claims 9 to 11, including a painting step of painting an outer surface of the pressure vessel after the pressing step.
The invention described in claim 13 is the method of manufacturing a fire extinguisher according to any one of claims 9 to 12, including a resin layer forming step of forming an aluminum anticorrosive resin layer on an inner surface of the pressure vessel before the abutting step.
The invention described in claim 14 is the method for manufacturing a fire extinguisher according to claim 9, wherein the fixture includes a1 st fixture and a2 nd fixture, and after the abutment step, the melting step, and the pressing step are performed on the 1 st fixture, the pressure vessel is rotated by a predetermined angle, and after the pressure vessel is rotated by the predetermined angle, the abutment step, the melting step, and the pressing step are performed on the 2 nd fixture.
Effects of the invention
According to the present invention, when an excessive load is applied to the mounting member, the pressure-resistant container does not peel off together with the joint portion, and safety in use can be improved.
Drawings
Fig. 1 is a structural view of a fire extinguisher and a pressure resistant container according to an embodiment of the present invention.
Fig. 2 is an explanatory view showing the welded joint of the fixing member of the fire extinguisher.
Fig. 3 is an explanatory view showing welded joints of a plurality of fixing members of the fire extinguisher.
Fig. 4 is a perspective view showing a main part of the fire extinguisher to which 2 fixing pieces are coupled.
Fig. 5 is an explanatory view showing a case where an excessive load is applied to the holder of the fire extinguisher.
Fig. 6 is a perspective view of a main part of the fire extinguisher showing that a hanger as an attachment member is attached to a holder.
Fig. 7 is a structural view showing a hanger as a mounting member mounted to the fire extinguisher.
Fig. 8 is an explanatory view showing a method of attaching the attachment member to the fixing member of the fire extinguisher.
Fig. 9 is an explanatory view showing a case where an excessive load is applied to the attachment of the fire extinguisher.
Detailed Description
In the fire extinguisher according to embodiment 1 of the present invention, the engaging portion mainly involving melting of the fixing is formed between the fixing and the pressure vessel, and when an excessive load is applied to the attachment, any of peeling of the fixing from the pressure vessel, breaking of the fixing, detachment of the fixing from the attachment, and breakage of the attachment occurs before the pressure vessel is peeled off together with the engaging portion. According to the present embodiment, when an excessive load is applied to the mounting member, the pressure-resistant container does not peel off together with the joint portion, and safety in use can be improved.
A fire extinguisher according to embodiment 2 of the present invention is the fire extinguisher according to embodiment 1, wherein the fixing member is made of a material different from that of the pressure vessel. According to the present embodiment, since the material of the fixing member is different from that of the pressure container, the bonding strength between the fixing member and the pressure container at the bonding portion is lower than that in the case where the fixing member and the pressure container are made of the same material, the columnar portion is easily peeled from the pressure container, and the pressure container and the bonding portion can be prevented from being peeled together.
A fire extinguisher according to embodiment 3 of the present invention is the fire extinguisher according to embodiment 1, wherein the fixing member is made of a material softer than the pressure vessel. According to this embodiment, the columnar portion is easily broken by making the fixing member softer than the pressure container, and the pressure container can be prevented from being peeled off together with the joint portion.
A fire extinguisher according to embodiment 4 of the present invention is the fire extinguisher according to any one of embodiments 1 to 3, wherein a groove or a notch is formed in the fixing member. According to the present embodiment, the groove or the notch is formed in the columnar portion, whereby the columnar portion is easily broken, and the pressure-resistant container can be prevented from being peeled off together with the joint portion.
A fire extinguisher according to embodiment 5 of the present invention is the fire extinguisher according to embodiment 4, and the groove is a spiral groove. According to the present embodiment, the groove is a spiral groove, so that the columnar portion can be used as a screw material, and the attachment of the attachment can be easily performed to the fixture.
A fire extinguisher according to embodiment 6 of the present invention is the fire extinguisher according to any one of embodiments 1 to 5, wherein the attachment is made of a resin material. According to the present embodiment, the columnar portion is easily broken by using the mounting member made of a resin material, and the pressure-resistant container can be prevented from being peeled off together with the joint portion.
A fire extinguisher according to embodiment 7 of the present invention is the fire extinguisher according to any one of embodiments 1 to 6, and no trace is generated on the inner surface of the pressure vessel due to the joint portion. According to the present embodiment, since separation between the joint and the pressure-resistant container is likely to occur, separation of the pressure-resistant container together with the joint can be prevented.
A fire extinguisher according to an 8 th embodiment of the present invention is the fire extinguisher according to any one of the 1 st to 7 th embodiments, wherein the attachment is at least one of a hanger, a hose stay, and a skirt. According to the present embodiment, the attachment of the hanger, the hose stay, and the skirt can be easily performed.
A method of manufacturing a fire extinguisher according to embodiment 9 of the present invention includes: an abutting step of abutting the fixing member to the pressure vessel; a melting step of melting the fixing member by energizing the fixing member after the abutting step; a pressing step of pressing the fixture toward the pressure vessel at least in the melting step, wherein in the abutting step, the fixture axis of the fixture is arranged toward the virtual vessel axis of the pressure vessel, and in the pressing step, the fixture is pressed toward the virtual vessel axis of the pressure vessel. According to the present embodiment, since the welding of the fixing member to the curved surface can be performed reliably and stably, the pressure vessel and the joint portion can be prevented from being excessively fastened to each other.
A 10 th embodiment of the present invention is the method of manufacturing the fire extinguisher according to the 9 th embodiment, wherein the joint portion formed mainly by melting the fixing member does not reach the inner surface of the pressure vessel. According to the present embodiment, since peeling is likely to occur between the joint portion and the pressure-resistant container, the peeling of the pressure-resistant container together with the joint portion can be prevented.
An 11 th embodiment of the present invention is a method of manufacturing a fire extinguisher according to the 9 th or 10 th embodiment, including a foreign matter removing step of removing at least dirt or rust on an outer surface of the pressure vessel at a position where the fixing member abuts, before the abutting step. According to the present embodiment, since the welding of the fixing member can be reliably and stably performed, it is possible to prevent the excessive fastening or incomplete joining of the pressure vessel and the joint portion.
A 14 th embodiment of the present invention is a method of manufacturing a fire extinguisher according to the 9 th embodiment, including a1 st fixture and a2 nd fixture as fixtures, wherein after the abutment step, the melting step and the pressing step are performed on the 1 st fixture, the pressure vessel is rotated by a predetermined angle, and after the pressure vessel is rotated by a predetermined angle, the abutment step, the melting step and the pressing step are performed on the 2 nd fixture. According to the present embodiment, since the holder axis of the holder is disposed toward the virtual vessel axis of the pressure vessel in the abutment step and the holder is pressed toward the virtual vessel axis of the pressure vessel in the pressing step, the pressure vessel is rotated to facilitate positioning, and the plurality of holders can be welded and joined in a short time.
Examples
Hereinafter, a fire extinguisher according to an embodiment of the present invention will be described.
Fig. 1 is a structural view of a fire extinguisher and a pressure resistant container according to the present embodiment.
Fig. 1(a) is a front view of a part of the fire extinguisher according to the present embodiment in a cross section.
As shown in fig. 1(a), the fire extinguisher according to the present embodiment includes: a pressure vessel 10 for containing a fire extinguishing agent, a siphon tube 1 disposed inside the pressure vessel 10, a pressure gauge 2 for indicating the pressure inside the pressure vessel 10, a valve stem 3 provided at the upper end of the siphon tube 1, a rod 4 for actuating the valve stem 3, a hose 5 for discharging the fire extinguishing agent by operating the rod 4, a nozzle 6 provided at the tip of the hose 5, and a skirt 7 for covering the lower portion of the pressure vessel 10.
The siphon tube 1 is disposed on an imaginary vessel axis X of the pressure vessel 10.
The pressure vessel 10 is made of an aluminum alloy material, and an aluminum anticorrosive resin layer 11 is formed on the inner surface of the pressure vessel 10. The aluminum anticorrosive resin layer 11 is formed by resin molding, but may be formed by painting. A powder medicine or a liquid medicine is sealed inside the pressure-resistant container 10.
Fig. 1(b) is a front view of the pressure vessel of the fire extinguisher according to the present embodiment.
As shown in fig. 1(b), the pressure container 10 is formed of a cylindrical body 12, a shoulder 14 extending from the body 12 to the opening 13, and a bottom 15 forming the lower part of the body 12. The shoulder portion 14 and the bottom portion 15 are formed in a truncated cone shape.
Fig. 2 is an explanatory view showing the welded joint of the fixing member of the fire extinguisher.
Fig. 2(a) shows a welding position of the fixture, fig. 2(b) shows a contact step, fig. 2(c) shows a welding step, and fig. 2(d) shows a pressing step. Fig. 2(b), 2(c), and 2(d) are plan views of the fire extinguisher as viewed from above.
As shown in fig. 2(a), the fixing member 20 is engaged with the main body 12 of the pressure vessel 10.
As shown in fig. 2(b), the anchor 20 includes a columnar portion 21 and a protrusion 22 formed at one end of the columnar portion 21. As shown in the drawing, it is preferable that one end of the columnar portion 21 on which the protrusion 22 is formed with an enlarged portion 23 having a larger diameter than the columnar portion 21.
The welding and joining of the mount 20 and the body 12 are performed in the order of the contact step, the melting step, and the pressing step.
As shown in fig. 2(b), in the abutment step, the fixture 20 is brought into abutment with the pressure vessel 10.
The holder 20 is disposed such that the holder axis Y of the holder 20 faces the virtual container axis X (see fig. 1) of the pressure container 10.
Then, as shown in fig. 2(c), in the melting step, the protrusion 22 formed at the end of the fixture 20 is arc-generated by applying current to the fixture 20, and mainly the protrusion 22 is melted.
As shown in fig. 2(d), in the pressing step, the fixture 20 is pressed against the pressure container 10. The holder 20 is pressed toward the virtual container axis X of the pressure container 10. The pressing step is performed in the contacting step, or in the contacting step and the melting step, and is preferably continued after the end of energization in the melting step. In such welding, a stud welding method of a CD (Capacitor Discharge) system can be used.
As shown in fig. 2(d), a joint 30 mainly composed of the melting of the protrusion 22 is formed between one end of the columnar portion 21 and the pressure vessel 10. The joint 30 is formed by melting a part of the enlargement 23 and a part of the pressure vessel 10 in addition to the protrusion 22, but no mark is generated on the inner surface of the pressure vessel 10 by the joint 30.
According to the present embodiment, since the welding of the fixing member 20 to the curved surface can be performed reliably and stably, the pressure vessel 10 and the joint portion 30 can be prevented from being excessively fastened.
Further, the aluminum anticorrosive resin layer 11 can be formed on the inner surface of the pressure vessel 10 in advance by forming the aluminum anticorrosive resin layer 11 on the inner surface of the pressure vessel 10 before the abutment step shown in fig. 2 (b).
Further, there is a foreign matter removal step of removing at least dirt or rust on the outer surface of the pressure vessel 10 at the position where the fixing member 20 abuts, before the abutment step shown in fig. 2 (b). By having the foreign matter removal step, the welding of the fixing member 20 can be performed reliably and stably, and the excessive fastening or incomplete joining of the pressure vessel 10 and the joint portion 30 can be prevented.
Further, there is a coating step, and after the pressing step shown in fig. 2(d), the outer surface of the pressure vessel 10 is coated, so that the coating does not affect the melting step, and the fixture 20 can be coated at once.
Fig. 3 is an explanatory view showing welded joints of a plurality of fixing members of the fire extinguisher.
Fig. 3(a) and 3(b) show the engagement of the 1 st anchor, and fig. 3(c) and 3(d) show the engagement of the 2 nd anchor. Fig. 3(a) and 3(c) are plan views of the pressure vessel, and fig. 3(b) and 3(d) are front views of main portions of the pressure vessel.
As shown in fig. 3(a) and 3(b), after the abutment step, the melting step, and the pressing step are performed on the 1 st fixing member 20A, the pressure vessel 10 is rotated by a predetermined angle.
As shown in fig. 3(c) and 3(d), after the pressure vessel 10 is rotated by a predetermined angle, the 2 nd fixture 20B is subjected to the abutment step, the melting step, and the pressing step.
In the abutment step, the fixture axis Y of the fixture 20 is disposed toward the virtual vessel axis X of the pressure vessel 10, and in the pressing step, the fixture 20 is pressed toward the virtual vessel axis X of the pressure vessel 10, so that the positioning is facilitated by rotating the pressure vessel 10, and the welding of the plurality of fixtures 20 can be performed in a short time.
Fig. 4 is a perspective view showing a main part of the fire extinguisher to which 2 fixing pieces are coupled.
The 1 st anchor 20A and the 2 nd anchor 20B are joined at the same height to the upper portion of the body portion 12. The fixing member 20 is preferably provided on the main body 12 as in the present embodiment, but may be provided on the shoulder 14 or the bottom 15 as shown in fig. 1 (b). In the case where the 1 st fixture 20A and the 2 nd fixture 20B are provided, they are preferably provided at the same height, and may be arranged on the same vertical line.
Fig. 5 is an explanatory view showing a case where an excessive load is applied to the holder of the fire extinguisher.
Fig. 5(a) shows a state in which the columnar portion 21 is peeled off from the pressure vessel 10 when an excessive load is applied to the mount 20.
In the fire extinguisher according to the present embodiment, when an excessive load is applied to the mount 20, as shown in fig. 5(c), the columnar portion 21 is peeled off from the pressure vessel 10 before a part of the pressure vessel 10 is peeled off together with the joint portion 30, as shown in fig. 5 (a).
In this way, in order to facilitate the separation of the columnar portion 21 from the pressure container 10 and prevent the separation of the pressure container 10 together with the joint portion 30, the fixture 20 is made of a material different from that of the pressure container 10. By making the material of the mount 20 different from that of the pressure vessel 10, the bonding strength at the bonding portion 30 can be made lower than that in the case where the mount 20 and the pressure vessel 10 are made of the same material.
In order to facilitate the separation of the columnar portion 21 from the pressure container 10 and to prevent the separation of the pressure container 10 together with the joint portion 30, the mount 20 is made of a material softer than the pressure container 10. The fixture 20 is made of a material softer than the pressure vessel 10, and therefore is easily broken at the columnar portion 21.
For example, by using 3000 series aluminum (Al-Mn series: aluminum-manganese alloy) for the pressure vessel 10 and 1000 series aluminum (pure aluminum series) for the fixture 20, the material of the fixture 20 can be different from that of the pressure vessel 10, or the material of the fixture 20 can be softer than that of the pressure vessel 10.
Fig. 5(b) shows a state in which the columnar portion 21 is broken when an excessive load is applied to the mount 20.
In the fire extinguisher according to the present embodiment, when an excessive load is applied to the fixing member 20, as shown in fig. 5(c), the columnar portion 21 is broken as shown in fig. 5(b) before a part of the pressure vessel 10 is peeled off together with the joint portion 30.
In this manner, grooves or notches are formed in the columnar portion 21 in order to facilitate the breakage of the columnar portion 21 and prevent the pressure-resistant container 10 from being peeled off together with the joint portion 30. By forming the groove or the slit in the columnar portion 21, stress concentration is likely to occur in the groove or the slit, and fracture is likely to occur. The grooves are preferably helical grooves. By forming the spiral groove, the columnar portion 21 can be made into a screw, and the attachment tool can be easily attached to the fixture 20.
Fig. 6 is a perspective view of a main part of the fire extinguisher showing that a hanger as an attachment member is attached to a holder.
The fire extinguisher of the present embodiment uses the 1 st anchor 20A and the 2 nd anchor 20B joined to the upper part of the main body 12, and a hanger 40 for fixing at the installation place is attached.
The hanger 40 has a pair of leg portions 41A, 41B and a connecting portion 42 connected to the pair of leg portions 41A, 41B.
The pair of legs 41A and 41B are in contact with the pressure-resistant container 10, respectively, and a space 43 is formed between the connection portion 42 and the pressure-resistant container 10.
The fire extinguisher is fixed to the installation place by inserting a protrusion piece provided on the wall surface or the storage container into the space portion 43.
Fig. 7 is a structural view showing a hanger as a mounting member mounted to the fire extinguisher.
Fig. 7(a) is a top sectional view showing a hanger body, fig. 7(b) is a front view of the hanger body, fig. 7(c) is a front view of a nut used for the hanger, fig. 7(d) is a plan view of the nut, fig. 7(e) is a top sectional view of the hanger, and fig. 7(f) is a front view of the hanger.
The hanger 40 includes a hanger body shown in fig. 7(a) and 7(b), a nut 44 shown in fig. 7(c) and 7(d), and a cover 45 shown in fig. 7(e) and 7 (f).
The hanger body is formed with: a1 st leg portion 41A forming a1 st insertion hole 46A, a2 nd leg portion 41B forming a2 nd insertion hole 46B, and a connecting portion 42 connecting the 1 st leg portion 41A and the 2 nd leg portion 41B.
The 1 st insertion hole 46A and the 2 nd insertion hole 46B are long holes.
The nut 44 is preferably a push nut. By setting the 1 st nut 44A and the 2 nd nut 44B as push nuts, the 1 st anchor 20A and the 2 nd anchor 20B are easily inserted, and the drop-off after the insertion can be reliably prevented.
A1 st nut space 47A in which the 1 st nut 44A is displaceable is formed between the 1 st insertion hole 46A and the 1 st lid 45A, and a2 nd nut space 47B in which the 2 nd nut 44B is displaceable is formed between the 2 nd insertion hole 46B and the 2 nd lid 45B.
In this way, by forming the 1 st nut space 47A and the 2 nd nut space 47B by the 1 st lid portion 45A and the 2 nd lid portion 45B, the 1 st lid portion 45A and the 2 nd lid portion 45B can be removed, and the hanger 40 can be easily removed from the pressure vessel 10.
The 1 st nut 44A is disposed to face the 1 st insertion hole 46A, and the 2 nd nut 44B is disposed to face the 2 nd insertion hole 46B.
The hanger 40 is preferably a resin material. By using the suspension 40 as a resin material, the connection portion 42 can be easily elastically deformed.
Fig. 8 is an explanatory view showing a method of attaching the attachment member to the fixing member of the fire extinguisher.
Fig. 8(a) to 8(d) are plan main part sectional views showing stages of mounting in order, fig. 8(e) is a front view of the hanger in the state of fig. 8(a), and fig. 8(f) is a front view of the hanger in the state of fig. 8 (d). In fig. 8, illustration of the 1 st lid portion 45A and the 2 nd lid portion 45B described in fig. 7 is omitted.
As shown in fig. 8(a), the 1 st fixing tool 20A is inserted into the 1 st insertion hole 46A and the 1 st nut 44A, and the 2 nd fixing tool 20B is inserted into the 2 nd insertion hole 46B and the 2 nd nut 44B.
The tip interval LY of the 1 st tip portion 20AY of the 1 st anchor 20A and the 2 nd tip portion 20BY of the 2 nd anchor 20B is larger than the root interval LX of the 1 st engagement tip portion 20AX of the 1 st anchor 20A and the 2 nd engagement tip portion 20BX of the 2 nd anchor 20B.
Therefore, the 1 st nut 44A is displaced in the direction of the arrow a1 with respect to the 1 st insertion hole 46A depending on the insertion state of the 1 st mount 20A with respect to the 1 st insertion hole 46A, and the 2 nd nut 44B is displaced in the direction of the arrow a2 with respect to the 2 nd insertion hole 46B depending on the insertion state of the 2 nd mount 20B with respect to the 2 nd insertion hole 46B.
FIG. 8(b) shows a state where the hanger 40 is in contact with the pressure vessel 10.
The connecting portion 42 is elastically deformable, and the interval between the 1 st leg portion 41A and the 2 nd leg portion 41B can be changed.
In the state of fig. 8(B), although the outside of the 1 st leg 41A and the outside of the 2 nd leg 41B are in contact with the pressure vessel 10, there is a gap between the inside of the 1 st leg 41A and the inside of the 2 nd leg 41B and the pressure vessel 10.
That is, the imaginary curvature of the contact surface of the 1 st leg 41A and the 2 nd leg 41B with the pressure vessel 10 is made larger than the vessel curvature of the pressure vessel 10. By making the virtual curvature larger than the vessel curvature, the hanger 40 is easily pressed against the pressure vessel 10, and the contact surface between the 1 st leg 41A and the 2 nd leg 41B can be closely attached to the pressure vessel 10 without a gap in a state where a reaction force in a direction of separating the hanger 40 from the pressure vessel 10 is applied.
In the state of fig. 8(B), by pressing the connecting portion 42 in the direction of arrow B1, the hanger 40 is pressed against the pressure vessel 10, so that a force is applied in the direction in which the interval between the 1 st leg portion 41A and the 2 nd leg portion 41B is expanded, and the inner side of the 1 st leg portion 41A and the inner side of the 2 nd leg portion 41B are in contact with the pressure vessel 10 (fig. 8 (c)).
When the inner side of the 1 st leg 41A and the inner side of the 2 nd leg 41B are brought into contact with the pressure vessel 10, the 1 st fixing tool 20A is further pressed into the 1 st nut 44A, and the 2 nd fixing tool 20B is further pressed into the 2 nd nut 44B (fig. 8 (d)).
When the pressing in the direction of arrow B1 shown in fig. 8B is released, a force in the direction in which the gap between 1 st leg 41A and 2 nd leg 41B is narrowed acts as a reaction force in the direction in which hanger 40 is pulled away from pressure vessel 10 (the direction of arrow c1 shown in fig. 8 c).
FIG. 8(d) shows a state in which the attachment of the hanger 40 to the pressure vessel 10 is completed. In this state, since a reaction force in the direction of arrow b1 shown in fig. 8(c) is always applied, the hanger 40 does not shake.
As shown in fig. 8(e) and 8(f), the 1 st nut 44A is displaced with respect to the 1 st insertion hole 46A depending on the insertion state of the 1 st fixing tool 20A with respect to the 1 st insertion hole 46A, and the 2 nd nut 44B is displaced with respect to the 2 nd insertion hole 46B depending on the insertion state of the 2 nd fixing tool 20B with respect to the 2 nd insertion hole 46B.
In fig. 8(e), an arrow e1 indicates the displacement direction of the 1 st nut 44A, and an arrow e2 indicates the displacement direction of the 2 nd nut 44B.
In this way, BY displacing the 1 st nut 44A and the 2 nd nut 44B, the hanger 40 can be smoothly attached to the 1 st anchor 20A and the 2 nd anchor 20B, and in the 1 st anchor 20A and the 2 nd anchor 20B, the tip interval LY between the 1 st tip end portion 20AY and the 2 nd tip end portion 20BY is made larger than the root interval LX between the 1 st joint portion 20AX and the 2 nd joint portion 20 BX.
By forming the grooves or the notches in the 1 st anchor 20A and the 2 nd anchor 20B, the 1 st nut 44A and the 2 nd nut 44B can be reliably engaged with each other.
In fig. 8, the 1 st anchor 20A and the 2 nd anchor 20B are formed with spiral grooves, and by forming the spiral grooves, the 1 st anchor 20A and the 2 nd anchor 20B can be screwed, and the 1 st nut 44A and the 2 nd nut 44B can be reliably engaged with each other.
Fig. 9 is an explanatory view showing a case where an excessive load is applied to the attachment of the fire extinguisher.
Fig. 9(a) shows a state in which the column portion 21 is peeled from the pressure vessel 10 when an excessive load is applied to the hanger 40 as the mounting member.
In the fire extinguisher according to the present embodiment, when an excessive load is applied to the hanger 40, the columnar portion 21 of the 1 st anchor 20A and the 2 nd anchor 20B is peeled off from the pressure vessel 10 as shown in fig. 9(a) before a part of the pressure vessel 10 is peeled off together with the joint portion 30.
In this way, in order to facilitate the separation of the columnar portion 21 from the pressure container 10 and prevent the separation of the pressure container 10 together with the joint portion 30, the columnar portion 21 is made of a material different from that of the pressure container 10. By making the material of the columnar portion 21 different from that of the pressure vessel 10, the joining strength of the columnar portion 21 and the pressure vessel 10 at the joining portion 30 can be reduced as compared with the case where the columnar portion 21 and the pressure vessel 10 are made of the same material.
In order to facilitate the separation of the columnar portion 21 from the pressure container 10 and to prevent the separation of the pressure container 10 together with the joint portion 30, the columnar portion 21 is made of a material softer than the pressure container 10. By making the columnar portion 21 softer than the pressure vessel 10, the columnar portion 21 is easily broken.
For example, by using 3000 series aluminum (Al-Mn series: aluminum-manganese alloy) for pressure vessel 10 and 1000 series aluminum (pure aluminum) for columnar portion 21, the material of columnar portion 21 can be made different from that of pressure vessel 10, or columnar portion 21 can be made softer than pressure vessel 10.
Fig. 9(b) shows a state in which the columnar portion 21 is broken when an excessive load is applied to the hanger 40 as the attachment.
In the fire extinguisher according to the present embodiment, when an excessive load is applied to the hanger 40 as the attachment, the columnar portion 21 is broken as shown in fig. 9(b) before a part of the pressure vessel 10 is peeled off together with the joint portion 30.
In this way, grooves or notches are formed in the columnar portion 21 in order to facilitate breakage of the columnar portion 21 and prevent the pressure-resistant container 10 from being peeled off together with the joint portion 30. By forming the groove or the slit in the columnar portion 21, stress concentration is generated in the groove or the slit, and breakage is easily generated. The grooves are preferably helical grooves. By forming the spiral groove, the columnar portion 21 can be made into a screw, and the mounting tool can be easily attached to the columnar portion 21.
Fig. 9(c) shows a state where the 1 st anchor 20A and the 2 nd anchor 20B are separated from the 1 st nut 44A and the 2 nd nut 44B when an excessive load is applied to the hanger 40 as the attachment.
In the fire extinguisher according to the present embodiment, when an excessive load is applied to the hanger 40 as the attachment, the 1 st anchor 20A and the 2 nd anchor 20B are detached from the 1 st nut 44A and the 2 nd nut 44B as shown in fig. 9(c) before a part of the pressure vessel 10 is peeled off together with the joint 30.
In this way, in order to facilitate the 1 st fixing tool 20A and the 2 nd fixing tool 20B to be detached from the 1 st nut 44A and the 2 nd nut 44B and to prevent the pressure vessel 10 from being peeled off together with the joint 30, shallow grooves or notches are formed in the 1 st fixing tool 20A and the 2 nd fixing tool 20B.
Fig. 9(d) shows a state in which the hanger 40 is broken when an excessive load is applied to the hanger 40 as the mounting member.
In the fire extinguisher according to the present embodiment, when an excessive load is applied to the hanger 40 as the attachment, the hanger 40 is broken as shown in fig. 9(d) before a part of the pressure vessel 10 is peeled off together with the joint 30.
In this way, the hanger 40 is made of a resin material in order to facilitate breakage of the hanger 40 and prevent the pressure vessel 10 from being peeled off together with the joint 30.
In addition, when an excessive load is applied to the hanger 40 as the mounting tool, at least one of the peeling of the columnar portion 21 from the pressure vessel 10, the fracture of the columnar portion 21, the detachment of the 1 st anchor 20A and the 2 nd anchor 20B from the 1 st nut 44A and the 2 nd nut 44B, and the breakage of the hanger 40 may occur before the peeling together with the pressure vessel 10 and the joint portion 30, but the safety in use can be improved by the occurrence of two or more of these cases.
In the present embodiment, although the attachment is described as the hanger 40, the hose receiver or the skirt 7 to which the hose 5 or the nozzle 6 shown in fig. 1 is fixed can be used as the attachment, and the attachment of the hose receiver or the skirt 7 can be easily performed by using the fixture 20.
Industrial applicability
The present invention is applicable to a pressure vessel made of an aluminum alloy material, but may be applied to a pressure vessel formed by extrusion molding of an ingot of magnesium, copper, iron, or an alloy thereof, or a pressure vessel formed by welding a stainless steel plate.
In the present invention, the case where the mounting member is welded and bonded to the pressure vessel using the fixing member has been described, but in the case where the mounting member is welded and fixed to the pressure vessel without using the fixing member and the bonding portion is formed by this welding and fixing, when an excessive load is applied to the mounting member, the mounting member may be peeled and broken from the pressure vessel before the pressure vessel is peeled together with the bonding portion, and the pressure vessel may not be made of an aluminum alloy material.
Description of the reference numerals
10 pressure-resistant container
11 aluminum anticorrosive resin layer
12 main body part
13 opening part
14 shoulder
15 bottom part
20 fixing piece
20B No. 2 fixing piece
21 columnar part
22 projection part
23 amplifying part
30 joint part
40 suspension member
41A leg
41B leg
42 connecting part
43 space part
44 nut
44B 2 nd nut
45B No. 2 cover part
46B 2 nd through hole
47B 2 nd nut space
X imaginary axis of container
Y-shaped fixing piece axis
LX root space
LY front end interval.
Claims (14)
1. A fire extinguisher, wherein a pressure vessel containing a fire extinguishing chemical is made of an aluminum alloy material, a fixing member is welded to the pressure vessel, and a mounting member is attached to the fixing member,
a joint portion mainly obtained by melting of the fixing is formed between the fixing and the pressure vessel,
when an excessive load is applied to the mount, any of peeling of the mount from the pressure vessel, breakage of the mount, detachment of the mount from the mount, and breakage of the mount may occur before the pressure vessel is peeled together with the joint.
2. A fire extinguisher as claimed in claim 1,
the fixing member is made of a material different from that of the pressure vessel.
3. A fire extinguisher as claimed in claim 1,
the fixing member is made of a material softer than the pressure vessel.
4. A fire extinguisher as claimed in claim 1 or 2,
a slot or cut is formed in the fastener.
5. A fire extinguisher as claimed in claim 4,
the groove is a spiral groove.
6. A fire extinguisher as claimed in claim 1 or 2,
the mounting member is made of a resin material.
7. A fire extinguisher as claimed in claim 1 or 2,
no trace is generated on the inner surface of the pressure-resistant container by the joint.
8. A fire extinguisher as claimed in claim 1 or 2,
providing the mounting as at least one of a hanger, a hose support and a skirt.
9. A method for manufacturing a fire extinguisher, the fire extinguisher being formed of an aluminum alloy material as a pressure vessel containing a fire extinguishing chemical, and a fixing member for attaching an attachment member to the pressure vessel being welded to the pressure vessel, the method comprising:
an abutting step of abutting the fixing member against the pressure vessel, the fixing member being composed of a columnar portion and a protruding portion formed at one end of the columnar portion;
a melting step of, after the abutment step, generating an arc at the protrusion of the fixture by energizing the fixture, and mainly melting the protrusion;
a pressing step of pressing the fixture against the pressure vessel at least in the melting step,
in the abutting step, the holder axial center of the holder is disposed toward the virtual vessel axial center of the pressure vessel,
in the pressing step, the fixing member is pressed toward the virtual container axis of the pressure vessel, and a joint portion mainly composed of the projection portion is formed between one end of the columnar portion and the pressure vessel.
10. The method of manufacturing a fire extinguisher according to claim 9,
the joint formed mainly by melting of the fixing member does not reach the inner surface of the pressure vessel.
11. The method of manufacturing a fire extinguisher according to claim 9 or 10,
and a foreign matter removing step of removing at least dirt or rust on an outer surface of the pressure vessel at a position where the pressure vessel abuts the fixing member, prior to the abutting step.
12. The method of manufacturing a fire extinguisher according to claim 9 or 10,
the method comprises a coating step for coating the outer surface of the pressure vessel after the pressing step.
13. The method of manufacturing a fire extinguisher according to claim 9 or 10,
the method comprises a resin layer forming step of forming an aluminum anticorrosive resin layer on the inner surface of the pressure vessel before the abutment step.
14. The method of manufacturing a fire extinguisher according to claim 9,
the fixture includes a1 st fixture and a2 nd fixture, and the pressure vessel is rotated by a predetermined angle after the abutment step, the melting step, and the pressing step are performed on the 1 st fixture,
after rotating the pressure vessel by the predetermined angle, the abutment step, the melting step, and the pressing step are performed on the 2 nd fixture.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2017027434A JP6298553B1 (en) | 2017-02-17 | 2017-02-17 | Fire extinguisher and method of manufacturing a fire extinguisher |
| JP2017-027434 | 2017-02-17 | ||
| PCT/JP2018/005369 WO2018151241A1 (en) | 2017-02-17 | 2018-02-16 | Fire extinguisher and fire extinguisher production method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110312553A CN110312553A (en) | 2019-10-08 |
| CN110312553B true CN110312553B (en) | 2021-06-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201880011817.5A Active CN110312553B (en) | 2017-02-17 | 2018-02-16 | Fire extinguisher and method for manufacturing fire extinguisher |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6298553B1 (en) |
| KR (1) | KR102589513B1 (en) |
| CN (1) | CN110312553B (en) |
| WO (1) | WO2018151241A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP7099930B2 (en) | 2018-10-25 | 2022-07-12 | 太平洋セメント株式会社 | Cement composition for modeling |
| CN112658053A (en) * | 2020-12-02 | 2021-04-16 | 中南大学 | Method for manufacturing fire extinguisher bottle body through pultrusion |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002126116A (en) * | 2000-10-26 | 2002-05-08 | Yamato Protec Co | Wall mounting bracket for fire extinguisher |
| CN201253437Y (en) * | 2008-05-23 | 2009-06-10 | 贵阳铝镁设计研究院 | Fixation structure of hydrant |
| JP2012161504A (en) * | 2011-02-08 | 2012-08-30 | Nippon Dry Chem Co Ltd | Fire extinguisher made of aluminum alloy |
| JP2016187401A (en) * | 2015-03-30 | 2016-11-04 | 日本ドライケミカル株式会社 | Fire-extinguisher |
| JP2016189949A (en) * | 2015-03-31 | 2016-11-10 | モリタ宮田工業株式会社 | Fire extinguisher |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3155496U (en) * | 2009-09-07 | 2009-11-19 | 寧波瀛震机械部件有限公司 | Fire extinguisher wall hanging device |
| JP3163026U (en) * | 2009-11-18 | 2010-09-30 | 豊光 對馬 | Can support for wall |
| JP2011229759A (en) * | 2010-04-28 | 2011-11-17 | Mitsubishi Motors Corp | Holding device for vehicular fire extinguisher |
| JP2016187400A (en) * | 2015-03-30 | 2016-11-04 | 日本ドライケミカル株式会社 | Device for protecting scattering due to rupture in pressurized fire extinguisher |
-
2017
- 2017-02-17 JP JP2017027434A patent/JP6298553B1/en active Active
-
2018
- 2018-02-16 CN CN201880011817.5A patent/CN110312553B/en active Active
- 2018-02-16 WO PCT/JP2018/005369 patent/WO2018151241A1/en active Application Filing
- 2018-02-16 KR KR1020197023808A patent/KR102589513B1/en active IP Right Grant
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002126116A (en) * | 2000-10-26 | 2002-05-08 | Yamato Protec Co | Wall mounting bracket for fire extinguisher |
| CN201253437Y (en) * | 2008-05-23 | 2009-06-10 | 贵阳铝镁设计研究院 | Fixation structure of hydrant |
| JP2012161504A (en) * | 2011-02-08 | 2012-08-30 | Nippon Dry Chem Co Ltd | Fire extinguisher made of aluminum alloy |
| JP2016187401A (en) * | 2015-03-30 | 2016-11-04 | 日本ドライケミカル株式会社 | Fire-extinguisher |
| JP2016189949A (en) * | 2015-03-31 | 2016-11-10 | モリタ宮田工業株式会社 | Fire extinguisher |
Also Published As
| Publication number | Publication date |
|---|---|
| JP6298553B1 (en) | 2018-03-20 |
| KR20190113838A (en) | 2019-10-08 |
| KR102589513B1 (en) | 2023-10-16 |
| WO2018151241A1 (en) | 2018-08-23 |
| CN110312553A (en) | 2019-10-08 |
| JP2018130414A (en) | 2018-08-23 |
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