JP3506173B2 - Watertight structure - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a watertight structure formed by joining a plurality of members such as extruded profiles and plates made of aluminum or aluminum alloy.

[0002]

2. Description of the Related Art Aluminum or aluminum alloy (hereinafter referred to as "aluminum") members are lightweight and have excellent corrosion resistance, so they are used for flat or three-dimensional structures in vehicles for construction / construction and trucks. Has been done. In this case, various watertight structures at the joint between the aluminum members have been considered. For example, in the case of forming a wall surface for partitioning a space, as shown in FIG. 11A, a plurality of L-shaped end portions 144 of an extruded shape member 142 made of aluminum and having a substantially flat cross section are overlapped with each other, and the superposition thereof is performed. By filling the groove 145 of the portion with the sealing 146, the shape members 142 are joined together to form the watertight structure 140.
Is formed. In addition, each shape member 142 is previously fixed to the furring strip 147 by a screw 148.

As shown in FIG. 11B, a watertight structure 150 using a plurality of aluminum hollow extruded shape members 151 is also widely used. Each extruded shape member 151 has a rectangular shape with a flat cross section, and has a wide bottom groove 1 along one end.
52 has a thick ridge 154 along the other end, and step portions 156 having an acute cross section on both sides thereof. Then, the bottom wide concave groove 152 and the thick convex ridge 154 are fitted, and the packing material 158 having a trapezoidal cross section made of a synthetic resin is formed in the concave portions formed on the upper and lower sides of the figure formed by the step portions 156. Forcibly fit. The watertight structure 150 has a joint strength between the shape members 151 and the male and female fitting portions (152,
154), maintain water and airtightness between the shape members 151 (sealed)
The property is secured by the packing material 158.

Further, as shown in FIG. 11 (C), an extruded shape member 16 made of aluminum having a flat channel cross section.
A watertight structure 160 using two members is also performed. In each extruded shape member 162, flanges 164 formed by bending the ends at a right angle are butted against each other with a thin packing member 168 interposed therebetween. Then, the bolt 166 is penetrated through a plurality of through holes formed in each flange 164, and the nut 1 is attached to each male screw portion thereof.
67 are respectively screwed. The watertight structure 160 secures the watertightness between the extruded shape members 162 by the packing material 168 and the bolts 166 and the nuts 167.

Further, a watertight structure 170 shown in FIG. 11 (D) is a curtain oar (the right side in the figure is indoor, the left side is outdoor).
It was developed for the purpose of completely water-tightening the joint part of
Packing materials 158 and 1 represented by the watertight structure 150 and the like
This is an improvement over the one using 68. In this watertight structure 170, packing materials 177 and 178 are provided between the upper and lower members 172 and 173 on the indoor side and abutted against each other, and a gap 176 is formed on the outdoor side to form a gap 17 with the packing material 178 and the like.
A large space 174 is formed between the six. According to the watertight structure 170, the space 174 has the same atmospheric pressure as the external pressure due to the gap 176, and rainwater does not enter the space 174 through the gap 176 due to the pressure difference. Further, rainwater that has entered through the gap 176 with kinetic energy also enters the space 174, but the packing material 178 and the like cannot reach these because it is at a high position that cannot be seen through the gap 176. Further, the rainwater that has entered the space 174 is smoothly discharged from the gap 176 due to gravity because the interior of the space 174 has the same atmospheric pressure as the external pressure. As a result, the water that has entered up to the height of the packing material 178 and the like in the space 174 is not accumulated, and as a result, complete water tightness is achieved.

[0006]

However, in the watertight structure 140, the watertight construction is easy, but the watertightness is deteriorated due to aging. In addition, in the watertight structure 150, the extruded shape members 151 can be fitted and easily joined to each other, and the packing member 158 can be formed only by forcibly fitting them into the recesses formed on both sides of the fitting portion. However, the packing material 15 disposed between the shape members 151
8 and each shape member 151 are not adhered to each other, and when a difference in atmospheric pressure occurs between the inside and the outside (upper and lower sides in the drawing) due to wind pressure or the like, water leaks from between the packing material 158 and the shape member 151. .

Further, the watertight structure 160 is also the watertight structure 15.
It has the same problem as 0. Further, in the watertight structure 170, the shape of the member adjacent to the members 172 and 173 connected for watertightness becomes complicated, the shape is limited, and the packing material 178 and the like deteriorate due to aging. Have the problem of doing. The present invention is to solve the problems of the technique in the prior art described above, to minimize the pre-processing and preparation, together reliably between such aluminum extruded Zaido workers such as for building use or vehicle In addition to being water-tight by joining for a long time, post-processing is almost unnecessary,
Further, it is an object to provide a watertight structure that can be applied to any joint shape.

[0008]

In order to solve the above-mentioned problems, the present invention is designed so that an extruded shape member or a plate member is provided along an end portion thereof with each other.
It was made with the idea of performing friction stir welding using a tool including a friction pin and a surface restraint at a slight depth to form a joining line having a flat surface. That is, watertight structure of the present invention (claim 1) is a water-tight structure between members made of aluminum or an aluminum alloy, by a Turkey be fixed separately structural member respectively said two members, the end of the members parts between with the match, butt portion between the ends of the members together
In the vicinity, the tips should be engaged so that these ends engage each other.
Of the L-shaped cross section and the disconnection of the tip
Face-to-face L-shaped engaging part, or hanging so as to fit each other
To form a mating section consisting of a ridge and an upward groove.
And engage the end portions with each other near the abutting portion.
Alternatively, it is characterized in that it is watertight between the members by fitting and forming a joining line by friction stir welding along the surface of the butted portion .

According to this watertight structure, extruded shape members, plate materials, etc.
Both members are fixed individually to advance structural member and an end consisting of
Since the engaging part or the fitting part is formed between the parts,
Along the surface of the butt joint between the ends of both members
Both surfaces are formed by shallow joining lines with a flat surface
Water-tightness is ensured between the ends of the
Can be easily applied .

Along the butting portion, the friction portion
The length is 0.5 to 3.0 mm and the outer diameter of the friction part is 0.5.
For tools with friction pin of ~ 3.0mm and surface restraint
A watertight structure that forms the joining line by friction stir welding
Manufacturing ( Claim 2 ) is also included. According to this watertight structure, the surface
Is a flat and shallow joining line between pre-fixed members
More reliably along the surface of the abutting part of
You can

The length of the friction portion is set to 3.0 mm or less.
Watertight construction is generally performed at assembly and construction sites.
Therefore, a simple friction stir welding device that is easy to transport and operate can be used.
This is to enable work. Also, the minimum length is reliable
And at least 0.5 mm to prevent water tightness
I did . Further, the minimum outer diameter of the friction part is set to 0.5 mm.
Is equivalent to the minimum outer diameter required by the friction pin for strength.
The maximum outer diameter is the point of transportation and operability of the above joining device.
To 3.0 mm. That is, friction stir welding
The pressing force of the rubbing pin is a major factor, but such pressing
The larger the force, the larger the entire joining device.
It is not suitable for use at an assembly site .
The surface restraining portion has a diameter two to three times the outer diameter of the friction portion .

Further, the member is a hollow part or a semi-hollow part.
Is a hollow extruded profile with a substantially rectangular cross section.
At least one side at the end of the plurality of profiles
The joining line is formed along the abutting portion of the surface.
A watertight structure ( claim 3 ) is also included. This watertight structure
If the hollow shape members are joined to each other on both sides,
The joining line formed along the line ensures a reliable seal .

A specific description of friction stir welding (friction star welding) used in the present invention is as follows.
The operation will be performed in the embodiment described below, but for the principle thereof, refer to, for example, Japanese Patent Publication No. 9-508073. In general, when welding members made of aluminum alloys by arc welding such as MIG, inventions have been proposed in which various welding conditions are devised in order to obtain good welding quality and excellent sealing performance. 8-197255, JP-A-9-103884). But these are
Since welding wires are required separately and the welding conditions must be strictly adhered to, the management of welding becomes complicated, and after-processing by grinding and removing the top part of the weld bead that is formed in some cases. There is also a problem that it is also necessary.

Therefore, in recent years, attention has been given to the friction stir welding, which is capable of joining metal materials more easily than arc welding. As shown in FIGS. 12 (A) and 12 (a), this friction stir welding rotates along the abutting surface between a pair of aluminum alloy flat plates 180, 181 whose edges are abutted and restrained. This is performed by moving the tool 182 while pressing it. The tool 182 is made of a material having a hardness and a softening temperature higher than that of a material to be joined, and includes a rotating cylindrical body 184, a surface restraining portion 186 which is a concave bottom surface thereof, and a friction pin 188 coaxially hanging from the center thereof. Then, the tool 182 is horizontally tilted slightly along the abutting surface.
It is moved in the (left) direction and a vertical pushing force is applied. A screw-shaped friction stirrer blade (not shown) along the horizontal direction is formed on the peripheral surface of the friction pin 188.

With the rotation and movement of the pin 188, aluminum near the abutting surfaces of the plates 180, 181 is
It is heated by frictional heat to be plasticized, and is fluidized in the horizontal and vertical directions between the plates 180 and 181 with the abutting surfaces sandwiched therebetween. Further, the surface restraint 186 suppresses the vertical flow of the fluidized aluminum and stirs the fluidized aluminum by the friction pin 188. As a result, as shown in FIGS. 12 (B) and 12 (C), the aluminum is solidified in the solid state, and the stirring section 18 is solidified.
It becomes 9. In addition, the surface of the stirring portion 189 becomes a joining line 190 which is flat and has a constant width. Therefore, unlike the conventional arc welding, there is no raised welding beat, and post-processing becomes easy.

Since the conventionally considered application of such friction stir welding is an application requiring a joining strength in place of MIG welding or the like, the length of the friction portion of the friction pin is usually 3 to 15 m.
m, the diameter was 3 to 10 mm, and the diameter of the surface restraint portion was 6 to 25 mm, which were relatively large. Further, in this case, the rotation speed of the tool 182 is 500 to 15000 rpm, and the feed speed is 0.
Pressing force applied to the tool 182 at 05-2 m / min: 1
It was performed at kN to 20 kN. In the present invention, the watertightness is the object and the bonding strength is not the object. Therefore, the depth and width of the bonding line may be extremely small. Therefore, in the tool used for friction stir welding, the length of the friction portion of the friction pin is 3 mm or less and its range is about 0.5 mm to 3.0 mm, and the outer diameter of the friction portion is 0.5 mm or more and its range is 0.5 mm. The requirement is to be ~ 3.0 mm. The diameter of the surface restraining portion may be about 2 to 3 times the outer diameter of the friction portion.

In this case, the rotational speed of the tool is 3000 to 3
The pressing force applied to the above tool can be performed at about 10 N to 1000 N at 0000 rpm and a feed rate of 0.02 to 2 m / min. The number of rotations is increased because the friction pin has a small outer diameter and is required to obtain the amount of heat required for softening aluminum. Further, the reason why the pushing force is small is that the outer diameter and the pushing depth of the friction pin become small. This makes it possible to make a small handy device, and it becomes a portable joining device that can be used at a construction site or the like. Further, in order to obtain the rotational speed, it can be realized by using, for example, a turbine motor using compressed air (eg, a dental drill) in addition to a normal electric motor. If the size of the friction pin is smaller than the above, high precision is required for processing, the dimensional precision of the pin material itself is considerably required, and it is not practical, and the friction stirrer blade formed on the peripheral surface is also sufficiently formed. Becomes difficult. Further, if the size is larger than the above size, a large force is required for the tool as described above, the apparatus becomes large in size, and the size of the pin material has to be increased, which is not practical.

[0018]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, preferred embodiments for carrying out the present invention will be described with reference to the drawings. Figure 1 relates to planar watertight 1 reference mode of forming a wall or the like, as shown in FIG. 1 (A), intended to be joined by butt plurality of extruded profile 2 at respective ends 8 is there. The extruded shape member 2 is made of aluminum alloy JIS; A6063-T5 or T6, etc., and has a horizontal flat plate portion 3 shown in the figure and a pair of ridges 4 and 4 having a substantially L-shaped cross section on the lower side thereof symmetrically in the left and right directions. In addition, the ends of the flanges 6 and 6 projecting from the left and right ends of the flat plate portion 3 are integrally provided with end portions 8 and 8 having a slightly thick wall and a rectangular cross section. It is a material. The ridges 4 are used to fix the extruded shape members 2 and 2 to which the watertight structure 1 is applied to a structural member such as a column (not shown) by screwing or the like.

First, as shown in FIG. 1 (A), the ridges 4, 4 are formed so that the end portions 8 of the extruded shape members 2, 2 adjacent in the longitudinal direction are brought into contact with each other to form a butt portion 9. The shape members 2 and 2 are fixed to a structural member such as a column (not shown) by using screws 4 or the like by using the screw 4.
In this state, friction stir welding described below with reference to FIG. 2 is performed along the upper surface (front surface) side of the butted portion 9 between the extruded shape members 2 and 2. Then, as shown in FIGS. 1B and 1C, a shallow joining line W having a depth corresponding to the length of the friction pin is formed across the respective end portions 8 and 8. This joining line W is formed by the aluminum forming each end 8 being fluidized in a solid state and then solidified, so that the adjacent extruded shape members 2 and 2 are metallically joined along the abutting portion 9. And the reliable and stable watertight structure 1 can be obtained. Moreover, as shown in FIG. 1 (C), since the surface of the joining line W is flat, there is no protruding portion and post-processing is hardly required. The joining line W is formed along the front surface side of the abutting portion 9 because it is necessary to perform watertight construction after attaching the extruded shape members 2 and 2 at predetermined positions in FIG. 1 (A). This is because there are many cases.

Next, the friction stir welding for forming the welding line W will be described with reference to FIG. As shown in FIGS. 2 (A) and 2 (a), after the end portions 8 of the shape members 2 are abutted on each other and fixed to a column or the like in advance, the tool 10 is attached to the surface side of the abutted portion 9.
Set. The tool 10 is made of a material having a hardness and a softening temperature higher than that of the shape member 2, and is coaxial with the center of the rotary cylinder 12 and the surface restraining portion 14 having an outer diameter of 4 mm which is a bottom surface of the rotary cylinder 12 and is gently curved. It consists of a hanging friction pin 16. The friction pin 16 has an outer diameter of 1.8 mm and a length of 1.5.
A cylindrical mm-shaped cylindrical body having a screw-shaped small friction stirrer not shown is formed on the outer peripheral surface thereof. Then, as shown in the drawing, the central axes of the cylindrical body 12 and the friction pin 16 are set to the shape members 2
The tool 10 is rotated by a motor (not shown) and lowered toward the abutting portion 9 in a state in which the end portions 8 and 8 are slightly inclined from the right angle. The rotation speed of the tool 10 is appropriately selected within the range of 3000 to 30000 rpm.

Next, as shown in FIGS. 2B and 2B,
The tool 10 is pressed vertically against each of the shape members 2, and the friction pin 16 is pushed in until the entire surface pressing portion 14 reaches the surface of each end portion 8. In this state, the tool 10 is moved to the left in FIG. 2B, which is the direction opposite to the tilted direction. This feed rate is appropriately selected within the range of 0.05 to 2 meters / minute. With the rotation and movement of this tool 10,
The aluminum forming the vicinity of the abutting portion 9 of each end portion 8 is heated by the friction pin 16 to be plasticized, and
It is fluidized in the horizontal and vertical directions between the left and right frame members 2 and 2 with the abutting portion 9 interposed therebetween. Further, the fluidized aluminum is vertically (surface direction) by the restraining portion 14.
A constant pressure is applied to the flow, and the scattering of the end portions 8 to be joined from the vicinity of the surface is prevented.

Then, as shown in FIGS. 2 (B) and 2 (C),
After the tool 10 has passed, the fluidized aluminum solidifies from the fluidized state to form the joining line W having a substantially inverted triangular cross section corresponding to the size of the friction pin 16. As shown in FIG. 2C, the surface of the joining line W becomes a flat surface Wa that is continuous along the abutting portion 9, although the surface restraining portion 14 slightly dents the portion corresponding to the width of the diameter. In addition, since air is not entrained inside the joining line W due to the presence of the restraining portion 14, no hole is formed.

According to the watertight structure 1 obtained by shallowly joining a plurality of extruded shape members 2 with the above-described joining line W, no prior processing is required, and the shape members 2 are simply butted and restrained to form a metallic structure. Since a unique joint is formed along the entire length of the abutting portion 9,
Water tightness can be reliably and stably imparted to a flat wall / floor / ceiling surface over the long term. Moreover, since the surface Wa of the joining line W is flat, almost no post-processing such as grinding is required. It should be noted that a shape member obtained by bending the middle of the flat plate portion 3 of the shape member 2 at a right angle or a shape member having a substantially cross section in advance is interposed between a plurality of watertight structures 1 and 1 and joined in the same manner as above. By joining along the line W, it is possible to form a three-dimensional watertight structure in which the wall surface and the floor surface and / or the ceiling surface are continuously sealed.

[0024] Figure 3 relates to the application of the watertight structure 1,
FIG. 3 (A) shows that the profile 2 is continuously arranged on the upper and lower surfaces of the roof structural member L of the building H, and they are joined to each other at the joining line W, and on the inner and outer surfaces of the wall structural member K. Also, the above-mentioned shape members 2 are continuously arranged, and only the outer side surface is joined by the joining line W. It should be noted that end members 2'having draining pieces are arranged at the eaves and the lower end on the outer surface side, and the members 2, 2 are placed on the floor structural member F.
Is laying. Further, FIG. 3 (B) in the longitudinal sectional view of a cargo van-type vehicle V of dry type to which the said watertight 1, wherein along the outer surface of the top wall portion structural member K of the roof structural member L The shape members 2 are continuously arranged and are joined to each other at a joining line W. A corner profile 2 ″ is arranged at the projected corner of the roof structural member L and the wall structural member K, and an end profile 2 ′ is arranged at the lower end of the wall structural member K. Since the roof portion structural material L and the wall portion structural material K of the building H or the vehicle V have the supporting strength of the respective shape members 2 and 2, sufficient watertightness can be obtained even with the shallow joining line W.

FIG. 4 relates to the watertight structure of the present invention . still,
In the following, the same reference numerals will be used for elements that are common to the above-described embodiment. FIG. 4 is a plan view of a watertight structure 20 that constitutes a roof surface of a cargo room of a van-type vehicle or the like.
As shown in (A), a plurality of extruded shape members 21 made of aluminum are used.
The engaging portions 25, 28 at the respective end portions 24, 26
Thus, the abutting portion 29 formed in the vicinity thereof is joined at the shallow joining line W. Each extruded shape member 21 is also made of the same material as described above, and on the lower side surface of the flat plate portion 22 in the drawing,
It has a pair of protrusions 23 having a substantially L-shaped cross section. The extruded shape members 21 and 21 which make each projection 23 also the watertight structure 20 are attached to the beam L by the screw N.
Etc. are fixed.

At the left end of the flat plate portion 22 of the central extruded shape member 21 in FIG. 4 (A), an end portion 26 having a thick and rectangular cross section is formed.
An engaging portion 28 having an L-shaped cross section is formed at the tip thereof. Further, a hook-shaped end portion 24 is formed at the right end of the flat plate portion 22, and an engaging portion 25 having an inverted L-shaped cross section is formed at the tip thereof. still,
The profile members 21 located on the left and right have the same cross section. And
As shown in FIG. 4B, in a state in which the engaging portions 25 and 28 of the plurality of extruded shape members 21 adjacent to each other in the longitudinal direction are engaged with each other and the abutting portion 29 is formed in the vicinity thereof. , Beam L
Each of the shape members 21 is restrained by fixing to, and friction stir welding is performed using the tool 10 from the surface side along the abutting portion 29. Then, as shown in the drawing, a joining line W depending on the size of the friction pin is formed across the respective end portions 24 and 26.

According to such a watertight structure 20, each extruded profile 2
1 is preliminarily positioned by the engagement by the engaging portions 25 and 28, and the joining line W is accurately formed along the abutting portion 29 between the two. It is possible to form a roof surface or the like that is continuous in a plane and has excellent watertightness. In addition, the fixing to the beam L or the like by each ridge 23 is performed after fixing the plurality of shape members 21 to the beam L or the like in advance.
Friction stir welding is applied to these to form the watertight structure 20.

FIG. 5 relates to the watertight structure of the reference embodiment . FIG. 5A shows a vertical cross section of a self-supporting side wall (hereinafter referred to as tilt) 30 in a truck bed. Aori 3
0 is upper rail 3 made of extruded aluminum
1, a plurality of middle rails 32, and a lower rail 33. Each of the rails 31, 32, and 33 has a hollow portion 35, and the upper rail 31 and the lower rail 33 have an opening portion 34 opened to the side of the cargo bed on the right side in the drawing. Furthermore, a long bolt 3 that penetrates each rail 31, 32, 33
The screw portions 38 at both ends of 7 are located in the openings 34 of the upper rail 31 and the lower rail 33, and fasten the rails 31, 32, 33 with washers and double nuts 39. Each opening 34 is closed by a cover 36 with rivets (not shown).

In addition, at the abutting portion between the rails 31, 32 and 33, as shown in FIG. 5B, a shallow welding line W is formed by the friction stir welding along the inner and outer surfaces thereof. Has been done. By providing this joining line W along the abutting portion between a desired number of rails, the tilt 30 having a planar watertight structure can be formed. Aori 30 concerned
The plurality of rails 31, 32, 33 are tightly coupled with the bolt 37 and the nut 39, and the joints inside and outside are joined by the shallow joining line W, so that the surfaces of the tilt are metallically continuous. . Therefore, unlike in the conventional case, fine aluminum powder is not generated due to friction caused by continuous running at the fitting portion between the rails 31, 32, 33, etc., and the oxide of this powder enters between the rails 31. The rainwater mixed in turns into black liquid that stains the surface of the aori,
Inconveniences such as damage to the cargo can be eliminated.

FIG. 5C shows a longitudinal sectional view of the partition 40 of the reference embodiment having a planar watertight structure, for example. The partition 40 includes an extruded aluminum profile 41 fixed to the ceiling surface ce and the floor surface f, and a plurality of profile members 4 stacked between them.
It consists of 6. Each of the shape members 41 and 46 has a hollow portion 43 having a substantially rectangular cross section. Horizontal flanges 42 extend from the upper and lower end members 41 and are fixed to the ceiling surface ce and the floor surface f by bolts and nuts 47. Furthermore, each shape 4
A flange 44 that extends in the vertical direction and a step portion 45 that is located on the opposite side and receives the above-mentioned flanges 44 of vertically adjacent profile members are formed on one side of the upper and lower portions of the members 1, 46.

Then, the respective shape members 41 and 46 are butted against each other, and the respective flanges 44 are inserted and fitted into the opposed step portions 45,
Further, the screw 48 is screwed into each flange 44 toward the step 45. This forms the partition 40 in which the respective shape members 41 and 46 are firmly joined together. Further, as shown in FIG. 5D, friction stir welding is performed from the outside along the joints of the upper and lower shape members 41 and 46 using the tool 10. As a result, as shown in the drawing, the joining line W having a shallow depth is formed across the flange 44 and the step portion 45. By applying the joining line W by this friction stir welding to the connecting portion between the desired number of shape members 41 and 46, the partition 40 having a desired size and a planar watertight structure can be formed. The joining line W may be formed only on any surface between the shape members 41 and 46. In this case, the plate thickness of the flange 44 needs to be smaller than the length of the friction pin.

FIG. 6 (A) shows a partial cross section of the floor unit 50 of the present invention having a planar watertight structure laid in a room. The floor unit 50 is made of aluminum and is composed of a plurality of extruded shape members 51. Each extruded shape member 51 has a substantially rectangular hollow portion 53 in a rectangular main body 52 having a flat cross section.
At the left end of each shape member 51, there are provided a flange 56 continuously protruding horizontally from the upper surface of the main body 52, a convex strip 54 hanging from the tip of the flange 56, and a small flange 58 protruding horizontally from the lower surface of the main body 52. Has been formed. In addition, each shape member 51
At the right end of the main body 52, there is formed an upward recessed groove 55 located at the projecting corner of the main body 52, and a presser bar 57 having a substantially crank-shaped cross section that horizontally projects from the lower surface of the main body 52.

First, an anchor bolt b standing from the floor structural member F such as a girder is passed through a holding strip 57 of the extruded shape member 51 located on the left side in the figure, and a nut 59 is screwed and fixed. . Next, another shape member 5 is provided on the right side of the shape member 51.
1 is arranged, the convex strip 54 is fitted into the concave groove 55 of the fixed profile 51, and the small flange 58 thereof is inserted into the lower portion of the presser strip 57 of the fixed profile 51. Repeating this work, while connecting the plurality of shape members 51 to each other,
It is fixed on the floor structural material F. Further, friction stir welding is performed using the tool 10 from the upper side along the fitting portion 51a of the convex line 54 and the concave groove 55 of each shape member 51. As a result, as shown in FIG. 6B, the joining line W having a shallow depth is formed across the fitting portion 51 a of the convex strip 54 and the concave groove 55. By applying the joining line W by the friction stir welding to the fitting portion 51a on the upper surface side between the desired number of shape members 51, a floor unit having a flat water-tight structure having a desired width and a strong connection structure 50 can be formed.

FIG. 7 relates to a watertight structure of a different reference embodiment. FIG. 7 (A) relates to a watertight structure 60 of a reference embodiment having a planar shape in which aluminum plates 61 are joined together. Each aluminum plate 61 is formed with an edge 63 which is deviated upward from the plate body 62 by a plate thickness at the left end in the figure. Then, the flat end portions 62a of the plurality of adjacent aluminum plates 61 and the end edge 63 are overlapped with each other to form the overlapping portion 64, and the plate main bodies 62 of the respective aluminum plates 61 are positioned in the same plane. Each aluminum plate 6
1 in the longitudinal and width directions. Then, friction stir welding is performed using the tool 10 from one side along the overlapping portion 59.

As a result, as shown in the drawing, a joining line W having a shallow depth is formed across the end portion 62a and the end edge 63 of each aluminum plate 61. By forming the deviated end edges 63 on two adjacent sides of a rectangle of each aluminum plate 61 in a plan view, and by joining the aluminum plates 61 to each other at the entire periphery by the joining line W, It is possible to form the watertight structure 60 having a wide planar reference form. In addition, the middle of a part of the aluminum plates 61 is bent at a right angle or the like, and the bent aluminum plates 61 are linearly joined to each other to form a large number of flat aluminum plates 6 described above.
By similarly vertically joining all of the watertight structures 60 to each other along the joining line W, a water storage tank or a pool having a reliable watertightness can be configured as a three-dimensional watertight structure.

FIG. 7 (B) relates to a watertight structure 65 of a reference embodiment which is a planar shape in which aluminum plates 66 are joined together.
Each aluminum plate 66 has a bent edge 68 in which the edge of the plate body 67 is bent into a substantially U-shaped cross section. Further, the bent edges 68 of the plurality of adjacent aluminum plates 66 are wound around each other as shown in the figure to form a plurality of overlapping portions 69. Then, each aluminum plate 66 is restrained in the longitudinal and width directions thereof, and friction stir welding is performed along any one of the overlapping portions 69 using the tool 10. As a result, as shown in the drawing, the joining line W having a shallow depth is formed across the bent edges 68 of the aluminum plates 66 in the thickness direction. By forming along the bonding line W to the polymerization unit 69 in the entire periphery between the plurality of aluminum plates 66, it is possible to form a wide watertight 65 of flat surface.

FIG. 7 (C) relates to a cylindrical body 70 having a watertight structure of a reference embodiment in which slightly thick aluminum plates 72 having a semicircular cross section are joined. As shown in FIG. 7 (c), the two aluminum plates 72 that are curved in a semicircular shape have edges 7
The three contact each other to form a butt portion 74. When friction stir welding is performed from the inside along the abutting portion 74 using the tool 10, a shallow joining line W is formed across each end edge 73. Connect the joint line W to both aluminum plates 7
By forming along the two butting portions 74, the cylindrical body 70 having a watertight structure of the cylindrical body can be formed. The cylindrical body 70 is supported on a plurality of pedestals 71, and both ends thereof are separately closed by a circular end plate made of aluminum (not shown) to form a tank for storing or transporting various chemical solutions or solutions. You can The joining line W can also be formed along both the inside and outside of the abutting portion 74 depending on the specifications of the tank.

FIG. 7D shows a pipe 75 having a watertight structure of a reference embodiment in which extruded profile members 77 having a relatively large thickness are joined together by aluminum. Horizontal flanges 78 are symmetrically projected outward toward both ends of each of the pair of upper and lower shape members 77 whose center is curved. The flanges 78 of the two shape members 77 are butted against each other, and the tool 10 is provided along the butted portion 78a.
When friction stir welding is performed by using, as shown in FIG. 7 (D), a joining line W having a shallow depth is formed across the end of each shape member 77, and a pipe 75 having a cylindrical sealing structure is formed. Can be obtained. The lower surface of the pipe 75 is supported by the curved portions 76a of the plurality of mounts 76, and the left and right flanges 78, 78 are fixed on the hollow portions 76b on the left and right of the mount 76 by bolts 79 and the like. . That is, each shape member 7
Since the bonding strength between the seven members is obtained by the bolt 79 or the like, the inner joining line W can be shallow.

FIG. 8 shows another panel in which a plurality of panels 85 are joined together.
The box-shaped watertight structure 80 which is a reference form of FIG . Each panel 85 has a sandwich structure including a pair of aluminum plates 87, 87 and a core material 86 such as glass wool filled between them. In addition, each panel 8 adjacent to each other
An aluminum extruded shape member 81 that linearly connects the ends of the panel 85 or an aluminum extruded shape member 83 that connects the ends of the panel 85 at a right angle is arranged between the five. Each shape 81,83
A hollow portion 82 is located at the center of the hollow portion 82, and a recessed portion 84 for receiving the end portion of the panel 85 is formed on both sides or at a right angle.

A panel 85 is provided in the concave portion 84 of each of the shape members 81 and 83.
9A and 9B, the blind rivet 89 is driven in to fix the frame member 81 or 83 and the panel 85 to each other. Further, the hollow portion 8 of each of the shape members 81 and 83
When friction stir welding is performed along the line 2 using the tool 10, a shallow joining line W is formed in the overlapping portion 80a between each shape member 81 or 83 and the aluminum plate 87 of the panel 85. A box-shaped watertight structure 80 can be formed by sequentially forming the joint line W along the shape member 81 or 83 and the panel 85. In FIG. 8, a plurality of profile members 88 having the same cross section as the extruded profile member 21 are laid on the floor structure member F such as Daihiki and fixed to the floor structure member F by screws or the like not shown. Together, they are joined to each other at the joining line W. The end profile 88 is fixed to the corner profile 83 and the rivet 89, and the joining line W is provided.

As shown in FIGS. 9 (A) and 9 (B), a tapping screw 90 is screwed from a roof portion structural member L such as a beam to a shape member 81 on the ceiling side, or a corner portion is shaped. The watertight structure 80 may be supported by screwing the same screw 90 into the material 83 from the roof structural material L and fixing the same. Further, instead of FIG. 9A, as shown in FIG. 9A, the shape member 91 can be fixed to the roof structural member L such as a beam. That is, the end portion of the panel 95 including the core material 96 and the aluminum plate 97 is inserted into each concave portion 93 of the shape member 91 having a substantially cross section, and the blind rivet 99 is inserted from each flange 92 of the shape member 91.
And a joining line W are applied. A rib 94 of thick wall is erected on the upper side of the shape member 91, and the roof structural member L and the bolts / nuts 98 are provided.
Supported by.

Further, as shown in FIG. 9B, instead of FIG. 9B, the profile 100 can be fixed to the roof structural member L such as a beam. That is, the end portion of the panel 105 including the core material 106 and the aluminum plate 107 is inserted into each recess 103 of the profile 100 having the same cross section as the profile 83, and each flange 101 of the profile 100 is connected to the rivet 109. A shallow junction line W is provided. A rib 105 of thick wall is erected on the upper side of the shape member 100, and the roof portion structural member L and the bolt nut 10 are provided.
Supported by eight. The watertight structure 80 can be applied to an electromagnetic wave shield room, a soundproof room, a food processing room, a medical operation / treatment room, or the like. Also, the panel 85
The above is not limited to the sandwich structure, and only the aluminum plate 87 that is bent into a box shape may be used.

FIG. 10 relates to a watertight structure of a further reference embodiment. FIG. 10 (A) shows a duct 110 of a reference embodiment having a watertight structure having a rectangular tubular cross section in which a plurality of extruded shape members 112, 114 and 116 are joined with aluminum. Profile 112
Has a substantially channel-shaped cross section, and a pair of corner profile members 114 are interposed between the profile member 116 serving as the bottom plate. Then, when friction stir welding is performed from outside using the tool 10 along the abutting portion between the shape members 112, 114, 116, a shallow joining line W is formed, and the watertight section has a substantially square shape. A duct 110 having a structure can be obtained. The duct 110 is fixed to the bracket 118 by U-shaped bolts and nuts (not shown) as shown in the figure, and covers various cables and pipes inserted therein with watertightness.

[0044] FIG. 10 (B), ginseng having a watertight structure of the hexagonal cylindrical shape obtained by joining a pair of extruded profile 122 of aluminum
1 shows a cable cover 120 in a considered form . Each shape 122
Has a substantially trapezoidal cross section, and integrally has a flat plate end portion 124 at one end and a thick end 126 having a substantially L-shaped cross section at the other end. The pair of shaped members 122 are point-symmetrically opposed to each other, and the respective end portions 124 are brought into contact with the respective L-shaped end portions 126 to form a pair of butted portions symmetrically. When friction stir welding is performed from the outside along the butt portion using the tool 10, a shallow joining line W is formed across the end portions 124 and 126, and a watertight structure having a hexagonal cross section is formed. It is possible to obtain the cable cover 120 having The watertight hexagonal columnar body can be used, for example, as an air supply / exhaust duct, a stud of a building, or a standing material of a fitting. Also, by changing the cross-sectional shape of each shape member, a cable cover having an arbitrary polygonal cross-section can be obtained.

Further, FIG. 10C has a cylindrical watertight structure in which a pair of extruded shape members 131 are joined with aluminum.
The pipe 130 of a reference form is shown. Each extruded shape member 131 has a slightly thick wall and a semicircular cross section, and has a flat end portion 13 at one end.
2 and an end portion 133 having a substantially L-shaped cross section at the other end. The two shape members 136 are point-symmetrically opposed to each other, and the respective end portions 133 of the L-shape are brought into contact with the respective other end portions 132 to form a pair of butt portions 134 symmetrically. When friction stir welding is performed using the tool 10 along the abutting portion 134,
It is possible to obtain the pipe 130 having a watertight structure having a circular cross section in which the shallow junction line W is formed across the end portions 132 and 133.

Further, FIG. 10 (D) shows a reference embodiment in which a pair of extruded shape members 136 each having a semicircular cross section are made of aluminum and the inner ridges 137 and the outer ridges 138 at both ends thereof are fitted to each other and joined together . The cross section of the pipe 135 is shown. Ridge 1 above
When friction stir welding is performed using the tool 10 from the outside along the abutting portion 139 adjacent to 38, a welding line W having a shallow depth is formed, and a pipe 135 having a watertight structure with a circular cross section is obtained. . Pipe 13 having the watertight structure
0 and 135 can be used for low pressure supply pipes for various liquids and gases, protective covers for communication cables, and the like.

The present invention is not limited to each of the forms described above. For example, to form a watertight structure in which a butt portion is formed between end portions of an aluminum extruded shape member and an aluminum plate material that are separately fixed to a structural material, and the joint line W is formed along these butt portions. You can also Further, the abutting portion is formed in the longitudinal direction of the ends of the plurality of extruded shape members made of aluminum which is fixed separately to the structural member, according and to form a joining line W along which <br/> It is also possible to continuously join the respective ends in the longitudinal direction and the width direction with the joining line W to form a large planar or three-dimensional watertight structure.

[0048] Incidentally, watertight structure of the present invention, in addition to the foregoing,
For example, it can be applied to a wing vehicle that vertically opens and closes a luggage compartment unit having an inverted L-shaped cross section in which half of a side wall and a roof material are integrated, and an upper structure such as a hull of various ships or a steering room. .

[0049]

The watertight structure of the present invention described above
According to (Claim 1), the members to be joined to the structural material in advance.
Separately fixed and engaged or fitted between the ends to project
For combined, the butted portion of the table <br/> surface surface formed along the shallow flat joining line between the ends of the two members,
A watertight structure is formed between the end portions of both members, which is made of metal and is securely joined together without a gap. Moreover, it is possible to join both members with a shallow joining line with minimal pre-processing and preparation work.
Since a tool with a small friction pin is used in a joint that requires a watertight structure, it contributes to the weight and simplification of the joining device including such a tool, is easy to install on site, and requires little post-processing. . Thereby, the technique of friction stir welding can be effectively utilized. Further, according to the watertight structure of the second aspect, it is possible to more reliably form the joining line having a flat surface and a shallow surface along the surface of the abutting portion or the overlapping portion between the members fixed in advance. Further, claim 3
According to the watertight structure, the hollow profiles are formed on both sides.
Reliable due to the joining line formed along the butt
Can be sealed.

[Brief description of drawings]

FIG. 1A is a cross-sectional view showing a butted state of extruded shape members, FIG. 1B is a partial cross-sectional view showing one form of a watertight structure of a reference embodiment , and FIG. 1C is a dashed-dotted line in FIG. The enlarged view of the part C.

2 (A) to (C) and (a) to (c) are partial schematic views showing respective steps of friction stir welding used in the above-mentioned reference embodiment and the like .

3A and 3B are partial cross-sectional views showing an application example of the watertight structure of FIG.

FIG. 4A is a sectional view showing a watertight structure of the present invention , and FIG.
The enlarged view of the dashed-dotted line part B in (A).

5A to 5D are sectional views showing a watertight structure of a reference embodiment or a partially enlarged view thereof.

6A is a partial cross-sectional view showing a watertight structure of a different form of the present invention, and FIG. 6B is an enlarged view of a one-dot chain line portion B in FIG.

FIG. 7 (A), (C), (c), (D), (d) is a sectional view or a partially enlarged view showing a watertight structure of the reference embodiment, and (B) is another reference. Sectional drawing which shows the watertight structure which is a form.

FIG. 8 is a partial cross-sectional view showing an application example of a watertight structure of a different reference embodiment .

9A and 9B are enlarged views of dashed-dotted line portions A and B in FIG. 8, and FIGS. 9A and 9B are partial cross-sectional views showing modified forms of FIGS.

[10] (A) ~ (D) is a sectional view showing still watertight different reference embodiment

11 (A) ~ (D) are partial cross-sectional view showing the water-tight structure according to traditional techniques.

12 (A), (B) and (a) are schematic views showing respective steps of general friction stir welding, and (C) is a sectional view taken along line CC in (B).

[Description of reference numerals] 20 ............... watertight 21, 51 ...... extruded profile (member) 2 4,26 ...... end 29 ............... butt portion 10 ............... tool 14 ... ………… Surface restraining part 16 ……………… Frictional pins 25, 28 …… Engaging part 53 ……………… Hollow part 50 ……………… Floor unit (watertight structure) 51a ………… Mating part W ……………… Joining line

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shinya Makita               1-34-1 Kambara, Kambara-cho, Anbara-gun, Shizuoka Prefecture                 Nippon Light Metal Co., Ltd. Group Technology Sen               Inside                (56) Reference JP-A-9-309164 (JP, A)                 JP-A-10-193140 (JP, A)                 JP-A-10-202374 (JP, A)                 Special table flat 7-505090 (JP, A)                 Special table flat 9-508073 (JP, A)

Claims (3)

(57) [Claims] 1. A water-tight structure between members made of aluminum or an aluminum alloy, by a Turkey be fixed separately to the structural member, respectively the both members, with the match between the ends of the two members, the member End of each other
Engage these ends together near the abutment
And an end portion having an L-shaped cross section, the tip of which is erected
Engagement part with an inverted L-shaped cross section where the ends hang down, or fit together
Fitting consisting of a ridge that hangs down and an upward groove
A mating part is formed, and the ends are related to each other in the vicinity of the butting part.
The watertight structure is characterized in that the members are watertight by engaging and fitting with each other and forming a joining line by friction stir welding along the surface of the abutting portion . 2. The length of the friction portion is 0.5 to 3.0 mm and the outer diameter of the friction portion is 0.5 to 3.0 along the abutting portion.
The watertight structure according to claim 1, wherein the joining line is formed by friction stir welding using a tool including a 3.0 mm friction pin and a surface restraint portion. 3. The member has a hollow portion or a semi-hollow portion.
This is a hollow extruded shape with a substantially rectangular cross section.
Of at least one side at the end of a number of profiles
The watertight structure according to claim 1 or 2 , wherein the joining line is formed along a mating portion .