JP2004174084A - Refuge exit device and its manufacturing method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a spot-welded refuge exit device which has an extreme reduction in material loss as compared with a refuse exit device due to a conventional technique, reduction in the number of necessary exclusive fixtures, and a simple structure, and requires no skill, and its manufacturing method. <P>SOLUTION: The refuge exit device 100 has a cylindrical body 16, the upper frame member 20 fixed to the upper part of the cylindrical body 16, the lower frame member fixed to the lower part of the cylindrical body 16, the upper lid 24 for closing the upper opening of the cylindrical body 16 and the lower lid 30 for closing the lower opening of the cylindrical body 16. This refuge exit device uses the upper frame member 20 and the lower lid 30 both of which are manufactured by cutting an integrally molded body. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
[Industrial applications]
The present invention provides an evacuation exit device installed in a building such as an apartment house, an apartment, and the like, in order to form an evacuation exit for a person to evacuate from a place of residence to a safe place in the event of a fire, an earthquake, or the like. It relates to a manufacturing method.
[0002]
[Prior art]
As shown in FIG. 11, the building evacuation exit 10 for evacuating to a safe place in the event of a fire, an earthquake, or the like is provided with an upper lid 101, an upper frame 104, a cylindrical body 106, a lower frame 108, and a lower lid 110. The evacuation exit device 100 is installed on a veranda 112 of a building or the like. The upper frame 104 and the lower frame 108 prevent the cylinder 106 from being deformed by the pressure of the concrete poured to form a veranda or the like. The evacuation exit device 100 usually includes a bendable upper lid opening / holding member 120, a bendable lower lid opening / holding member 121, an elastic ladder 122, a slowing down device 124 for slowing down the extension speed of the elastic ladder 122, and the like. Are added to make evacuation safe and easy.
[0003]
The evacuation exit device 100 is preferably made of stainless steel which is hard to corrode and has excellent aesthetics. For example, the following configurations have been proposed.
The first method for manufacturing an evacuation exit device includes a member corresponding to a cylinder corresponding to each side of the evacuation exit device having a rectangular opening, a portion corresponding to an upper frame, and a portion corresponding to a lower frame. It is formed integrally as a side component. Both ends of these four members are cut at an inclination of 45 °, and the cut portions are butted and welded (see Patent Document 1).
[0004]
The manufacturing method of the second evacuation exit device 100 uses a cylindrical body 106 whose upper end 140 and lower end 142 are bent outward at right angles, as shown in FIG. The upper end 140 is surrounded by a two-step upper frame 104 for increasing the rigidity of the cylinder 106 and eliminating dangerous projections, and both are joined by spot welding. The lower end 142 is surrounded by a single-stage lower frame 108 for increasing the rigidity of the cylinder 106 and eliminating dangerous projections, and the two are joined by spot welding.
[0005]
The upper lid 101 has a downward portion 150 and a handle portion 152 formed therearound, and covers the upper opening of the building evacuation opening 10 such that the downward portion 150 covers the upper portion of the upper frame 104. The lower lid 110 has an upwardly directed portion 158 formed therearound, and the upwardly directed portion 158 enters the inside of the lower frame 108 to cover a lower opening of the building evacuation opening 10 (for example, see Patent Document 2).
[0006]
[Patent Document 1]
JP-A-53-134515, page 2, line 11 and after, and FIG. 1 [Patent Document 2]
Japanese Patent Application Laid-Open No. Hei 9-122262
[Problems to be solved by the invention]
The method for manufacturing the first evacuation exit device is a method in which the number of necessary dedicated jigs is small and the amount of unnecessary materials is small. However, it is difficult to incline both ends of the side component member with high accuracy by 45 °. In addition, the welding of the ends cut at 45 ° to each other must be performed by plasma welding or TiG welding, which requires skill, resulting in an increase in manufacturing cost. Furthermore, it is difficult to remove the temper color, that is, the oxide scale, by these weldings. In particular, it is practically impossible to remove the oxide scale at the portion on the back side of the side structural member. Occurs.
[0008]
The method of manufacturing the second evacuation exit device has advantages that welding can be performed by a simple facility with no skill, and that oxide scale can be easily removed. On the other hand, there are many dedicated jigs required, and a high rate of material loss due to molding and cutting of the frame member, resulting in high manufacturing cost.
[0009]
[Object of the invention]
The present invention has been made in view of the above-described problems of the evacuation exit device and the method of manufacturing the same in the related art, and has a material loss extremely small as compared with the related art, a small number of necessary dedicated jigs, and An object of the present invention is to provide an evacuation exit device in which the device is joined by spot welding that is simple and requires no skill, and a method of manufacturing the same.
[0010]
[Means for Solving the Problems]
The first invention of the present application includes a cylinder, an upper frame fixed to an upper portion of the cylinder, a lower frame fixed to a lower portion of the cylinder, an upper lid for closing an upper opening of the cylinder, and a lower opening of the cylinder. An evacuation exit device having a lower lid for closing, wherein the upper frame body and the lower lid, which are integrally molded and cut and used, are used.
[0011]
An embodiment of the first invention is characterized in that the cutting cuts a horizontal portion of the molded member. With such a configuration, it is possible to effectively prevent deformation of the two parts, which are integrally molded, cut, and separated from each other, to return to the plane before molding in a substantially cost-free manner. Have.
[0012]
The second invention of the present application is directed to a cylindrical body, an upper frame fixed to an upper part of the cylindrical body, a lower frame fixed to a lower part of the cylindrical body, an upper lid for closing an upper opening of the cylindrical body, and a lower opening of the cylindrical body. What is claimed is: 1. An evacuation exit device having a lower lid for closing, wherein the upper frame body and the lower lid are integrally molded, cut, and manufactured.
An embodiment of the second invention is characterized in that the cutting cuts a horizontal portion of the molded member. With such a configuration, it is possible to effectively prevent deformation of the two parts, which are integrally molded, cut, and separated from each other, to return to the plane before molding in a substantially cost-free manner. Have.
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
An evacuation exit device 100 according to an embodiment of the present invention and a method for manufacturing the same will be described below with reference to the drawings. The evacuation exit device 100 has a cylindrical body 16 as shown in FIG. The cylindrical body 16 has an upper end portion 12 which is flat, and a lower end portion 14 which is bent outward at a right angle and further bent upward. The upper end portion 12, which is a flat surface, is sandwiched by the cylinder sandwiching portion 22 of the upper frame 20 having the step portion 18 in order to increase the rigidity of the cylindrical body 16 and eliminate dangerous projections. The cylindrical holding portion 22 of the upper frame 20 and the upper end 12 of the cylindrical body 16 are joined by spot welding.
[0014]
The upper lid 24 has a downward portion 26 and a handle portion 28 formed around it, and covers the upper opening of the building evacuation opening so that the downward portion 26 covers the holding portion 22 of the upper frame 20. The lower lid 30 is provided with an upwardly directed portion 32 and an outwardly directed portion 34 outside the upwardly directed portion 32. The lower lid 30 covers the lower opening of the cylindrical body 16 with the upwardly directed part 32 and the outwardly directed part 34 outside the lower part 30 entering the lower end part 14 of the cylindrical body 16.
[0015]
As shown in FIG. 1 which is a vertical sectional view, the manufacturing method of the evacuation exit device 100 is as follows: a flat plate 50 made of stainless steel is pressed into a first falling portion 54 around a center plane portion 52 at the center thereof; The first horizontal portion 56, a second falling portion 58 outside the first horizontal portion 56, a second horizontal portion 60 outside the first horizontal portion 56, and a third falling portion 62 outside the first horizontal portion 56 are formed by press working.
Next, as shown in FIG. 3, a portion near the first falling portion 54 of the first horizontal portion 56, that is, a boundary between the first falling portion 54 and the first horizontal portion 56 by the cutters 66 and 66 'from above and below. The position that enters the first horizontal portion 56 from the bent portion is cut and separated.
[0016]
The separated member including the central horizontal portion 52 and the first falling portion 54 becomes the lower lid 30. A burr 68 is generated at the lower end of the separated first falling portion 54 as shown in FIG. As shown in FIG. 5, the burr 68 is shaved off by a sander (not shown) or the like. As shown in FIG. 6, a part of the first horizontal portion 56 remains at the lower end of the first falling portion 54 from which the burr 68 has been cut off. Since a part of the first horizontal portion 56 remains, the separated first falling portion 54 can be prevented from being deformed to swell in a drum shape in the horizontal direction.
[0017]
The separated portion including the first horizontal portion 56, the second falling portion 58, the second horizontal portion 60, and the third falling portion 62 becomes the upper frame 20. In the separated first horizontal portion 56, burrs 70 are generated as shown in FIG. The burr 70 is removed or deformed to a less dangerous state by a subsequent forming process. The part that becomes the separated upper frame body 20 is further formed by a fixed lower mold 72 and a vertically reciprocating upper mold 74 as shown in FIG. 8, and as shown in FIG. It is bent into a U-shaped cross section.
[0018]
As shown in FIG. 10, when assembling the upper frame 20 and the cylinder 16, the upper end 12 of the cylinder 16 is inserted into the U-shaped cross section of the first horizontal portion 56. Next, the spot welding electrodes 80 are brought into contact with both outer portions of the U-shaped cross section of the first horizontal portion 56 into which the upper end portion 12 of the cylindrical body 16 is inserted, and spot welding is performed.
As another welding method for assembling the upper frame body 20 and the cylindrical body 16, it is also possible to weld and fix the distal end portion of the first horizontal portion 56 and the cylindrical body 16 by spotting by Tig welding.
The cylindrical body 16, the upper frame body 20, and the lower lid 30 configured as described above are combined with the upper lid 24 and the like as shown in FIG. 1 to complete the evacuation exit device 100.
[0019]
【The invention's effect】
According to the evacuation exit device and the method of manufacturing the same of the present invention, the material loss is extremely small as compared with the prior art, the number of required special jigs is small, and the device is connected by spot welding which is simple and does not require skill. It has the effect that it can be manufactured.
[Brief description of the drawings]
FIG. 1 is a sectional perspective view of an evacuation exit device according to an embodiment of the present invention.
FIG. 2 is a cross-sectional view of a molded cutting member after molding of the evacuation exit device according to the embodiment of the present invention.
FIG. 3 is a cross-sectional view of the formed cutting member after cutting of the evacuation exit device according to the embodiment of the present invention.
FIG. 4 is an enlarged sectional view of a central plane portion of the evacuation exit device according to the embodiment of the present invention.
FIG. 5 is an enlarged cross-sectional view for explaining deburring processing of a central plane portion of the evacuation exit device according to the embodiment of the present invention.
FIG. 6 is an enlarged cross-sectional view for explaining a central plane portion of the evacuation exit device according to the embodiment of the present invention after deburring.
FIG. 7 is an enlarged cross-sectional view for describing preparation for forming an upper frame of the evacuation exit device according to the embodiment of the present invention.
FIG. 8 is an enlarged cross-sectional view for explaining a forming process of an upper frame of the evacuation exit device according to the embodiment of the present invention.
FIG. 9 is an enlarged sectional view for explaining the assembly of the cylindrical body and the upper frame of the evacuation exit device according to the embodiment of the present invention.
FIG. 10 is an enlarged cross-sectional view for explaining welding of the cylindrical body and the upper frame of the evacuation exit device according to the embodiment of the present invention.
FIG. 11 is a perspective view of a conventional building evacuation exit.
FIG. 12 is a center sectional view of a conventional evacuation exit device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 100 Evacuation exit device 12 Upper end part 14 Lower end part 16 Cylindrical body 18 Step part 20 Upper frame body 22 Cylindrical clamping part 24 Upper lid 26 Downward part 30 Lower lid 32 Upward part 50 Stainless steel flat plate 50
54 First falling part 58 Second falling part 60 Second horizontal part 62 Third falling part 66 Cutter 80 Spot welding electrode

Claims (4)

Evacuation having a cylinder, an upper frame fixed to an upper part of the cylinder, a lower frame fixed to a lower part of the cylinder, an upper lid closing an upper opening of the cylinder, and a lower lid closing a lower opening of the cylinder. An evacuation exit device, comprising: the upper frame body and the lower lid, which are manufactured by integrally molding and cutting. The evacuation exit device according to claim 1, wherein the cutting cuts a horizontal portion of the formed member. Evacuation having a cylinder, an upper frame fixed to an upper part of the cylinder, a lower frame fixed to a lower part of the cylinder, an upper lid closing an upper opening of the cylinder, and a lower lid closing a lower opening of the cylinder. A method for manufacturing an evacuation exit device, wherein the upper frame body and the lower lid are integrally formed, cut, and manufactured. 4. The method according to claim 3, wherein the cutting cuts a horizontal portion of the formed member.

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