JP2000237881A - Production of panel structural body and panel structural body - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a panel structural body having a good joining state even when the dimensions of the end parts of both external plate of two panel are different. SOLUTION: As two panels 10A, 20, panels in which opening parts 14, 24 are formed between the end parts of both external plate parts 11, 12 and 21, 22, respectively, are used. Among the panels, the dimension between the external faces of both external plate parts 21, 22 of the panel 20 is made smaller than the dimension between both external plate parts 11, 12 of the other panel. The end parts of the external plate parts of both panels 10A, 20 are butted against each other through an intermediate member 30A having fitting parts 31, 32. When butting these both panels 10A, 20, the fitting part 32 of the intermediate member 30A is tightly fitted into the opening part 24 of the panel 20, the opening part 24 of the panel 20 is forcedly expanded, the difference in dimensions between the external face of the end parts of both external plate parts of both panels 10A, 20 is corrected. At this state, the end parts of both external plate parts of both panel 10A, 20 are joined to the intermediate member 30A by friction agitation joining.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to, for example, railways,
The present invention relates to a metal panel structure used as a floor material, a wall material, a ceiling material, or a structural member of a building such as a vehicle such as a bus or a ship, and a method of manufacturing the same.

[0002]

2. Description of the Related Art For example, when a floor material of a railway vehicle is manufactured, as shown in FIG. 9, two panels (110) and (120) are used.
And the two panels are joined and integrated.

The two panels (110) (120) shown in FIG.
) Are made of a hollow extruded member made of aluminum (including its alloy, the same applies hereinafter), and two flat outer plate portions (111) and (112) which are spaced apart in parallel.
(121) and (122), and a plurality of connecting plate portions (113) (123) that integrally connect both outer plate portions at intervals. Then, the plurality of connecting plate portions (113
) (123) One of the outer plate portions (111)
), (112), (121), and (122) are integrally connected at their ends, and the remaining connecting plate portion integrally connects the outer plates at an intermediate portion thereof.

When a wide panel structure is manufactured using these two panels (110) and (120), both outer panels (111), (112) and (121) of both panels (110) and (120) are manufactured. )
The ends of (122) are butted together, the ends of one of the outer plates (111) and (121) are joined at the butted portion, and the ends of the other one of the outer plates (112) and (122) are joined. The parts are joined at the butted part. By doing so, the two panels (110) and (120) are joined and integrated,
Thus, a desired wide panel structure can be obtained.

[0005] In FIG. 1, both ends of the outer plate are joined by friction stir welding, which will be described as follows.

That is, as shown in FIG. 1 (b), friction stir welding in which a small-diameter pin-shaped probe (142) protrudes on the end face (141a) axis of a large-diameter cylindrical rotor (141). The probe (142) is rotated by rotating the rotator (141) using a welding tool (140), and the probe (142) is connected to one end of the outer plate part (111) (121). Insert into the butted part of the parts. And the probe (142
) Is inserted and the outer plate portions (111) (121)
). Then, the probe (1
Probe (142) due to frictional heat generated by the rotation of 42) or frictional heat generated by sliding between the end surface (141a) of rotor (141) and the outer surface of outer plate portions (111) (121). The vicinity of the contact portion with the probe is softened, and the softened portion is stirred by the rotation of the probe (142), and the softened and stirred portion receives the traveling pressure of the probe (142) and fills the passage groove of the probe (142). As described above, the plastic flow is performed in such a manner that the probe wraps backward in the traveling direction of the probe (142), and then is cooled and solidified by losing frictional heat. This phenomenon is caused by the probe (142
) Are successively repeated in accordance with the relative movement of (1), and finally the ends of the outer plate portions (111) and (121) are joined and integrated at the butted portion.

[0007] This friction stir welding is in the category of solid-phase welding, and has a remarkably small heat input compared to fusion welding of MIG and TIG, and does not generate stress due to solidification shrinkage.
This has the advantage that deformation and cracking due to thermal strain near the joint are unlikely to occur.

[0008]

Thus, in the two panels (110) and (120) shown in the same figure, the outer panel portions (111) and (112) of one of the panels (110) are located between the outer surfaces. Dimensions (L1) and both outer panels (121) of the other panel (120)
The dimension (L2) between the outer surfaces of the (122) is slightly different from the dimension (L2) due to dimensional variations caused during the manufacture of the panel. For example, both outer plates (121) of the other panel (120) are different.
The dimension (L2) between the outer surfaces of the (122) is slightly smaller than the dimension (L1) between the outer surfaces of the outer panels (111) and (112) of the one panel (110). 0.6m
m is small. Generally, this dimensional difference can be said to be within the range of allowable tolerance. However, since welding is performed by friction stir welding, the following problem occurs.

That is, the two panels (110) and (120) having different dimensions (L1) and (L2) between the outer surfaces of the outer plate portions as described above.
), At least one outer plate (111
(121) A step (X) occurs at the abutting portion between the (121). When the step (X) is generated in the butted portion as described above, the welding tool (140) is inclined toward the outer plate portion (121) of the second panel (120) or the rotor (141) during friction stir welding.
) Is caught on the edge of the step (X), and it is difficult to smoothly move the probe (142) of the joining tool (140) inserted into the butt portion along the butt portion. Become. Furthermore, if friction stir welding is performed in a state where a step (X) is generated at the butted portion, a joining defect such as a void due to entrainment of air occurs at the joined portion,
It becomes impossible to obtain a favorable panel structure in the joined state. This problem is derived from the difference in the dimensions (L1) and (L2) between the outer surfaces of the ends of the outer panels of the two panels (110) and (120). It is.

SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned problem, and an object thereof is to eliminate a step even when the dimensions between the outer surfaces of both outer panels of two panels are different. Therefore, it is an object of the present invention to provide a method of manufacturing a panel structure and a panel structure capable of correcting a dimensional difference, thereby obtaining a panel structure having a good bonding state.

[0011]

In order to achieve the above-mentioned object, the present invention of claim 1 is directed to a two-dimensionally-spaced two-dimensional arrangement.
A first plate having a flat outer plate portion and a connecting plate portion integrally connecting the two outer plate portions at an intermediate portion thereof, and an opening formed between ends of the two outer plate portions. A panel and two flat outer plate portions arranged in parallel and separated from each other;
A connecting plate portion integrally connecting the two outer plate portions at an intermediate portion thereof, an opening is formed between ends of the both outer plate portions, and a dimension between outer surfaces of the two outer plate portions is A second panel having a dimension smaller than the dimension between the outer surfaces of the outer panels of the first panel, and fitted into at least an opening of the second panel among the openings of the first and second panels. An end portion of both outer plate portions of the first and second panels between an end portion of both outer plate portions of the first panel and an end portion of both outer plate portions of the second panel; And an intermediate member interposed along the ends of the outer panel portions of the first panel,
A method of manufacturing a panel structure in which ends of both outer plate portions of the second panel are abutted with each other via the intermediate member, and the first and second panels and the intermediate member are joined and integrated. When the butting operation of the first and second panels is performed, the fitting portion of the intermediate member is fitted into at least the opening portion of the second panel among the opening portions of the first and second panels. The opening of the panel is forcibly expanded to correct the dimensional difference between the outer surfaces of the ends of both the outer panels of the first and second panels.
The end portions of both outer plate portions of the first panel and the end portions of both outer plate portions of the second panel are joined by friction stir welding.

According to this, the panel structure 2 is formed.
By using two panels each having an opening formed between the ends of the outer panels, the ends of the outer panels of each panel are easily deformed. By tightly fitting the insertion portion into the opening of the corresponding panel, the opening of the panel can be forcibly expanded, so that the dimension between the outer surfaces of the ends of both outer plate portions of the panel can be adjusted. This makes it possible to correct the dimensional difference between the outer surfaces of the ends of the outer panels of the two panels. Therefore, the size between the outer surfaces of the end portions of the two outer plate portions is different.
Even when a panel structure is manufactured using individual panels, a step caused by a dimensional difference can be eliminated.

According to a second aspect of the present invention, there are provided two flat outer plate portions which are spaced apart in parallel and a connecting plate portion in which these two outer plate portions are integrally connected at their ends. First
A panel, two flat outer plate portions arranged in parallel and spaced apart from each other, and a connecting plate portion integrally connecting the two outer plate portions at an intermediate portion thereof; A second panel in which an opening is formed between the first and second panels, and wherein a dimension between outer surfaces of both outer panel parts is smaller than a dimension between outer surfaces of both outer panel parts of the first panel; A first panel having a fitting portion to be fitted into an opening of the panel, and having an outer portion of the second panel disposed between an end of both outer plate portions of the first panel and an end of both outer plate portions of the second panel; Using an intermediate member interposed along an end of the plate portion, an end of both outer plate portions of the first panel and an end of both outer plate portions of the second panel are connected to the intermediate member. And the first and second
A method for manufacturing a panel structure in which a panel and an intermediate member are joined and integrated, wherein a fitting portion of the intermediate member is inserted into an opening of the second panel during a butting operation of the first and second panels. By inserting, the opening of the second panel is forcibly expanded to correct the dimensional difference between the outer surfaces of the ends of the outer panels of the first and second panels. An end of both outer panels of the first panel and an end of both outer panels of the second panel are joined to the intermediate member by friction stir welding.

According to this, the panel structure 2 is formed.
By using, as one of the two panels, the second panel having an opening formed between the ends of the outer panels, the ends of the outer panels of the second panel are deformed. The opening of the second panel can be forcibly expanded by tightly fitting the insertion portion of the intermediate member into the opening of the second panel, so that the outer panels of the second panel can be forcibly expanded. Since the dimension between the outer surfaces of the ends of the two panels can be adjusted, the dimensional difference between the outer surfaces of the ends of the outer panels of the two panels can be corrected. Therefore, even when a panel structure is manufactured using two panels having different dimensions between the outer surfaces of the ends of the two outer plate portions, a step caused by the dimensional difference can be eliminated.

According to a third aspect of the present invention, in the method for manufacturing a panel structure according to the first or second aspect of the present invention, a welding tool for friction stir welding having a rotating pin-shaped probe is provided. The fitting portion of the intermediate member has a width smaller than the diameter of the probe, and is provided with a positioning projection that is in contact with an end surface of an outer panel portion of the corresponding panel, In the abutting state of the two panels, the positioning projection is sandwiched between the end surface of the outer panel portion of the first panel and the end surface of the outer panel portion of the second panel. By inserting the probe into the positioning projection in such a manner as to straddle the outer plates on both sides thereof, and moving the probe relatively to the panel along the end of the outer plate of the panel, the outer plates on both sides are inserted. One of the outer skin and the middle And joining of the wood, and a junction between the other outer plate part and the intermediate member, lies in the same time.

According to this, since the positioning projection is provided at the insertion portion of the intermediate member, the insertion portion is inserted into the panel opening until the positioning projection comes into contact with the end surface of the panel outer plate portion. When the fitting is performed, the position of the fitting portion in the panel opening is determined. Also, by a single relative movement operation of the probe of the welding tool, the joining of one of the outer plates on both sides and the intermediate member, and the joining of the other outer plate and the intermediate member, Since they can be performed simultaneously, the efficiency of the joining operation is improved.

Further, the invention according to claim 4 has two flat outer plate portions arranged in parallel and spaced apart from each other, and a connecting plate portion integrally connecting the two outer plate portions at an intermediate portion thereof. A first panel having an opening formed between the ends of the outer plates, two flat outer plates arranged in parallel and spaced apart from each other; And a connecting plate part integrally connected with the first panel, an opening is formed between the ends of the two outer plate parts, and the dimension between the outer surfaces of the two outer plate parts is equal to that of the two outer plate parts of the first panel. A second panel having a size smaller than a dimension between outer surfaces; a fitting portion fitted into at least an opening of the second panel among the openings of the first and second panels; The first and second panels are located between the ends of the outer panels of the panel and the ends of the outer panels of the second panel. An intermediate member interposed along the ends of both outer plate portions of the first panel, the ends of both outer plate portions of the first panel, and the end portions of both outer plate portions of the second panel. Are abutted via the intermediate member, and the first and second panels and the intermediate member are joined and integrated with each other, and the fitting portion of the intermediate member includes the first and second panels. By being fitted into at least the opening of the second panel among the openings of the second panel, the opening of the panel is forcibly expanded, and both the outer panels of the first and second panels are opened. The dimensional difference between the outer surfaces of the ends of the first panel is corrected, and in this state, the ends of the outer panels of the first panel and the ends of the outer panels of the second panel are attached to the intermediate member. It is characterized by being joined by friction stir welding.

According to this, in a state in which the dimensional difference between the outer surfaces of the ends of the outer panels of the first and second panels is corrected, the ends of the outer panels of the first panel are attached to the intermediate member. And the ends of both outer panel portions of the second panel are joined by friction stir welding, so that the relative movement of the joining tool could be performed smoothly, and no joining defects occurred in the joined portion, that is, good. This results in a panel structure having a proper bonding state.

Further, the invention according to claim 5 has two flat outer plate portions arranged in parallel and separated from each other, and a connecting plate portion in which these two outer plate portions are integrally connected at their ends. First
A panel, two flat outer plate portions arranged in parallel and spaced apart from each other, and a connecting plate portion integrally connecting the two outer plate portions at an intermediate portion thereof; A second panel having an opening formed between the first and second panels, wherein a dimension between the outer faces of the outer panels is smaller than a dimension between the outer faces of the outer panels of the first panel; A first and a second panel are provided between the ends of the outer panels of the first panel and the ends of the outer panels of the second panel. And an intermediate member interposed along the ends of both outer plate portions of the first panel, and the ends of both outer plate portions of the first panel and the ends of both outer plate portions of the second panel are formed. , Butted through the intermediate member,
A panel structure in which the first and second panels and the intermediate member are joined and integrated, wherein a fitting portion of the intermediate member is fitted into an opening of the second panel to form a second panel. Is forcibly expanded to correct the dimensional difference between the outer surfaces of the ends of the outer plates of the first and second panels. In this state, the first member is attached to the intermediate member by the first member.
The end portions of both outer plate portions of the panel and the end portions of both outer plate portions of the second panel are joined by friction stir welding.

According to this, a panel structure having a good bonding state is obtained, as in the fourth aspect of the present invention.

[0021]

Next, embodiments of the present invention will be specifically described with reference to the drawings.

FIGS. 1 to 3 show a first embodiment of the present invention. In the first embodiment, two panels (10A) (20) and an intermediate member (30A) shown in FIG.
The ends of both outer panels of these panels (10A) and (20) are abutted via an intermediate member (30A),
By joining them together, the wide panel structure shown in FIG. 3 is to be manufactured.

The two panels (10A) and (20) are both made of aluminum hollow extruded members.

The first panel (10A) is shown in FIG.
As shown in (a), two flat first and second outer plate portions (11) (1) extending in the longitudinal direction and spaced apart in parallel.
2), and a plurality of connecting plate portions (13) extending in the length direction, which are integrally connected at intervals in the middle portion in the width direction of the outer plate portions (11) and (12). . And, between the ends in the width direction of the outer plates (11) and (12),
An opening (14) is formed. Further, the connecting plate portion (13) is connected orthogonally to both outer plate portions (11) and (12).

Similarly, the second panel (20) is composed of two flat first and second outer plate portions (21) and (22) extending in the longitudinal direction and spaced apart in parallel, and both outer and outer plates. Board part (21) (2
2), and a plurality of connecting plate portions (23) extending in the longitudinal direction, which are integrally connected at intervals in an intermediate portion in the width direction. An opening (24) is formed between the widthwise ends of the outer plates (21) and (22). The connecting plate portion (23) is orthogonally connected to both outer plate portions (21) and (22).

The dimension between the outer surfaces of the outer panels (21) and (22) of the second panel (20) is the same as that of the first panel (10A).
) Is slightly smaller than the distance between the outer surfaces of the outer plates (11) and (12), for example, 0.6 mm. This dimensional difference is caused by dimensional variations that occur during the extrusion manufacturing of the panel. In these drawings, for convenience of explanation, this dimensional difference is exaggerated.

In the figure, (30A) is an intermediate member made of an extruded aluminum member. This intermediate member (30A) is provided on both outer plates (11) of the first panel (10A).
(12) and both outer panels (2) of the second panel (20).
1) Between the end of (22) and the first and second panels (10A
) And (20) are interposed along the ends of the outer plates (11), (12), (21) and (22).

The intermediate member (30A) has a first fitting portion (3) fitted into the opening (14) of the first panel (10A).
1), a second fitting portion (32) fitted into the opening (24) of the second panel (20), and a boundary between the first fitting portion (31) and the second fitting portion (32). A first positioning projection (35) and a second positioning projection (36), which are integrally provided on the portion.

The first fitting portion (31) has a contact surface which is brought into surface contact with the inner surface of the end of the first outer plate portion (11) of the first panel (10A). A fitting projection (31a),
A second fitting projection (31b) having an abutting surface that abuts on the inner surface of the end of the second outer plate portion (12) in a surface contact state;
And a plate-shaped support wall (33) integrally connecting the second fitting projections (31a) (31b). The first
The second fitting projections (31a) and (31b) are spaced apart in parallel with each other. The dimension between the contact surfaces of the first and second fitting projections (31a) and (31b) is determined by the distance between the inner surfaces of the ends of the outer plates (11) and (12) of the first panel (10A). The first fitting portion (31) is fitted exactly into the opening (14) of the first panel (10A). The support wall portion (33) includes the first and second fitting projections (31a) (31b).
To support the outer panels (1) of the first panel (10A).
1) It is for maintaining the dimension between the outer surfaces of the ends of (12).

The second fitting portion (32), like the first fitting portion (31), comes into surface contact with the inner surface of the end of the first outer plate portion (21) of the second panel (20). A first fitting projection (32a) having an abutting surface to be abutted, and a second abutment surface having an abutting surface abutting on the inner surface of the end of the second outer plate (22).
The first and second fitting projections (32b) and the first and second fitting projections (32b).
a) A plate-shaped support wall (33) integrally connecting (32b)
And is composed of The support wall part (33) of the second fitting part (32) is the support wall part (33) of the first fitting part (31).
It is something that is shared with. The first and second fitting projections (32a) (32b) are spaced apart in parallel with each other. The first and second fitting projections (32a) (32b)
) Is slightly larger than the distance between the inner surfaces of the ends of the outer panels (21) and (22) of the second panel (20). , Second fitting portion (32)
Is fitted tightly into the opening (24) of the second panel (20). Then, by tightly fitting the second fitting portion (32) into the panel opening (24), the opening (24) of the second panel (20) is forcibly expanded, whereby the second fitting is performed. Both panels (21) of two panels (20)
The dimension between the outer surfaces of the ends of (22) is corrected to be the same as the dimension between the outer surfaces of the ends of both outer plates (11) and (12) of the first panel (10A) to eliminate the dimensional difference. It is.

The first positioning projection (35) is provided on the end face of the first outer plate (11) of the first panel (10A) or the second positioning projection (35).
The first fitting portion (31) and the second fitting portion (32) are positioned by contacting the end surface of the first outer plate portion (21) of the panel (20). The protrusion (36) is provided on the second outer plate (12) of the first panel (10A).
Abutting against an end surface of the second panel (20) or an end surface of the second outer plate portion (22) of the second panel (20).
This is for positioning the fitting portion (32).

The first and second positioning projections (35)
The width (H) of (36) is smaller than the diameter of the probe (42) of the welding tool (40) for friction stir welding described later, and is preferably 1 mm or less.

Next, a method of manufacturing a panel structure using the first and second panels (10A) and (20) and the intermediate member (30A) having the above-described structure will be described.

First, as shown in FIG. 1 (b), the ends of the outer panels (11) and (12) of the first panel (10A) and the outer panels (21) of the second panel (20). ) And the end of (22) are abutted through the intermediate member (30A). During this butting operation, the first fitting portion (31) of the intermediate member (30A) is fitted into the opening (14) of the first panel (10A), and the second fitting portion (32) is fitted into the second panel. Fit tightly into the opening (24) of (20).

In this butting operation, after the first fitting portion (31) is fitted into the opening (14) of the first panel (10A), the second fitting portion (32) is fitted to the second panel (20). The second fitting portion (32) may be fitted into the opening portion (24) of the second panel (20), and then the first fitting portion may be fitted into the opening portion (24). (31) may be inserted into the opening (14) of the first panel (10A), or alternatively, by moving both panels (10A) (20) in the butting direction, the first insertion portion ( The fitting operation of the 31) into the panel opening (14) and the fitting operation of the second fitting portion (32) into the panel opening (24) may be performed simultaneously.

By this butting operation, the first fitting portion (31)
Is fitted into the opening (14) of the first panel (10A) exactly, and when fitted to a predetermined fitting position, the first and second positioning projections (35) (36) are fitted. First
The first fitting portions (31) are positioned by contacting the end surfaces of both outer plate portions (11) and (12) of the panel (10A).

On the other hand, the second fitting portion (32) is tightly fitted into the opening (24) of the second panel (20).
When the first and second positioning projections (35) and (36) are fitted to the predetermined fitting positions, the first and second positioning projections (35) and (36) come into contact with the end surfaces of the outer panels (21) and (22) of the second panel (20), Thereby, the second fitting portion (32) is positioned. Further, the second fitting portion (3
2), the opening (24) of the second panel (20)
Is forcibly expanded, so that both skins (2
1) The distance between the outer surfaces of the ends of (22) is
) Is corrected to the same size as the distance between the outer surfaces of the ends of the outer plates (11) and (12).

In this state, the outer surface of the end of the first outer plate (11) of the first panel (10A) and the outer surface of the end of the first outer plate (21) of the second panel (20) Are flush with each other, and the second panel (1) of the first panel (10A) is also
2) and the second outer plate (2) of the second panel (20).
The outer surface at the end of 2) is flush with the outer surface. Further, the first and second positioning projections (35) and (36)
The end faces of both outer panels (11) and (12) of the panel (10A) and the second
The first positioning projection (35) is sandwiched between the end surfaces of both outer plates (21) and (22) of the panel (20), and the outer surface (protrusion end) of the first positioning projection (35) is the first panel (10A). The outer surface of the end portion of the first outer plate portion (11) and the outer surface of the end portion of the first outer plate portion (21) of the second panel (20) are flush with each other. The outer surface of the protruding portion (36) includes the outer surface of the end of the second outer plate (12) of the first panel (10A) and the end of the second outer plate (22) of the second panel (20). Is flush with the outer surface of.

The support wall (33) is provided on both panels (10A
) And (20) are arranged orthogonally to both outer plates (11), (12), (21) and (22).

In this state, the ends of the outer panels (11) and (12) of the first panel (10A) and the outer panels (21) and (22) of the second panel (20) are joined by friction stir welding. ) Is joined to the intermediate member (30A).

The friction stir welding will be described as follows.

(40) is a welding tool for friction stir welding.
It has a large-diameter cylindrical rotor (41) and a small-diameter pin-shaped probe (42) integrally protruded on the axis of the end face (41a) of the rotor (41). The rotor (41) and the probe (42) are both made of a heat-resistant material that is harder than the panels (10A) (20) and the intermediate member (30A) and can withstand the generated frictional heat.

Using this joining tool (40), while rotating the rotor (41) to rotate the probe (42),
As shown in FIG. 2, the probe (42) is inserted into the first positioning projection (35) so as to straddle the first outer plates (11) and (21) on both sides thereof.

As shown in the drawing, this insertion is continued until the tip of the probe (42) is inserted into the first and second fitting portions (31) and (32) of the intermediate member (30A). Until the end surface (41a) of 41) is pressed against the first outer plate portion (11) (21),
Doing so can generate more frictional heat,
Further, it is desirable in that scattering of the material base can be prevented.

Then, while maintaining this state, the rotating probe (42) is moved along the ends of the first outer plates (11) and (21). Alternatively, both first outer plate portions (1
1) Move both panels (10A) and (20) so that the ends of (12) pass sequentially through the probe (42).

The frictional heat generated with the rotation of the probe (42), or the end face (41a) of the rotor (41) and the first
The probe (4) is generated by frictional heat generated by sliding of the outer plate (11) (21) and the outer surface of the first positioning projection (35).
2) The vicinity of the contact portion with the probe (42) is softened, and the softened portion is stirred by the rotation of the probe (42), and the softened and stirred portion receives the traveling pressure of the probe (42), and
After flowing plastically in such a manner as to go backward in the traveling direction of the probe (42) so as to fill the passage groove of the above, the frictional heat is lost and the solidification is performed. This phenomenon is sequentially repeated with the relative movement of the probe (42), and finally the first panel (10
A) The end of the first outer plate portion (11) and the end of the first outer plate portion (21) of the second panel (20) extend over the entire length of the first and second intermediate members (30A). The two fitting portions (31) and (32) are simultaneously joined. In FIG. 3, (W) denotes a joining portion by the friction stir welding, which is formed along the ends of the first outer plate portions (11) and (21).

In this friction stir welding, the welding tools (1) and (2) are placed in a state where the outer surfaces of the first outer plate portions (11) and (21) are flush with the outer surface of the first positioning projection (35). Since the probe (42) of (40) can be relatively moved, the relative movement of the probe (42) can be smoothly performed. Also, since the dimensional difference is corrected and no step is formed,
A joint (W) free from joint defects such as voids due to the entrainment of air is formed.

At the time of this friction stir welding, the insertion pressure of the probe (42) and the pressure contact of the end face (41a) of the rotor (41) are applied to both ends of the first outer plates (11) and (21). As a result, a load is applied inward, but both end portions of the first outer plate portions (11) and (21) are positioned directly below the insertion position of the probe (42). The first fitting projection (31a
) (32a), the first outer plates (11) and (21) do not bend inward. Therefore, the joining wall portions of the first outer plate portions (11) and (21) become flat. Further, since the first fitting projections (31a) and (32a) are in contact with the inner surfaces of both ends of the first outer plate portions (11) and (21) in a surface contact state, a softened portion due to frictional heat is formed. The problem of bulging inward can also be prevented.

Next, after the panels (10A) and (20) are turned over, the end of the second panel (12) of the first panel (10A) and the second panel of the second panel (20) are turned over. The end of the part (22) is joined to the intermediate member (30A) by the same joining operation as described above.
Are joined to the first and second fitting portions (31b) and (32b) by friction stir welding.

Even in this case, for the same reason as described above, the probe (42) of the joining tool (40) can be smoothly moved relative to each other, and a joining portion (W) having no joining defects can be formed. It is also possible to prevent the second outer plate portions (12) and (22) from being bent inward and to prevent the softened portion from bulging inward.
Therefore, the bonding state of the obtained panel structure is extremely good.

Further, according to the panel structure manufacturing method, the probe (42) of the joining tool (40) is relatively moved only once along the ends of the first outer plate portions (11) and (21). By doing so, both first outer plate portions (11) are attached to the intermediate member (30A).
Both ends of (21) can be joined. Similarly, the operation of moving the probe (42) once along the ends of both the second outer plate portions (12) and (22) relative to each other allows the intermediate member ( 30A)
In addition, since both end portions of the second outer plate portions (12) and (22) can be joined, the production efficiency of the panel structure can be greatly improved.

In the first embodiment, the first and second fitting portions (31) of the intermediate member (30A) are the first and second fitting portions (31).
The dimension between the contact surfaces of the fitting projections (31a) (31b) is set to be the same as the dimension between the inner surfaces of both outer plate portions (11) and (12) of the first panel (10A). However, it may be set slightly larger than this dimension. In this case, the first and second fitting projections (31a) and (31b) are tightly fitted into the opening (14) of the first panel (10A), whereby the opening (1A) of the first panel (10A) is formed. 14) is expanded so that the dimension between the outer surfaces of the ends of the outer panels (11) and (12) of the first panel (10A) is slightly larger than the original dimension, but conforms to this dimension. Thus, the dimension between the contact surfaces of the first and second fitting projections (32a) (32b) of the intermediate member (30A) may be set. Needless to say, the intermediate member (30A) includes the first fitting portion (31).
Does not have to be provided.

In the second embodiment shown in FIG. 4, the intermediate member (30B) differs from the intermediate member (30A) of the first embodiment in that it does not have a positioning projection. Other configurations are the same as those of the first embodiment.

In the second embodiment, the end of the first outer plate (11) of the first panel (10A) and the second panel (20)
The ends of the first outer plate portions (21) are directly abutted with each other, and the outer surfaces of the ends of the first outer plate portions (11) and (21) are flush with each other. (10A) The end of the second outer plate (12) of the second panel (20) and the end of the second outer plate (22) of the second panel (20) are directly butted against each other, and both the second outer plate (12). )
The outer surface of the end of (22) is flush. Then, in this state, the first outer plate portions (11) (2) are attached to the intermediate member (30B).
Both ends of 1) are joined by friction stir welding, and both ends of the second outer plates (12), (22) are joined by friction stir welding.

In the third embodiment shown in FIG. 5, the intermediate member (30C) is replaced by the first and second positioning projections, instead of the end portions of the first outer plate portions (11) and (21). It has a first connection part (37) for connecting the two, and a second connection part (38) for connecting the ends of both the second outer plate parts (12) and (22). The widths of the first and second connection portions (37) and (38) are the same as those of the first connection portion.
And the width (H) of the second positioning projections (35) and (36) is wider.

The ends of the outer panels (11) and (12) of the first panel (10A) and the ends of the outer panels (21) and (22) of the second panel (20) are In a state where the two panels abut each other via the intermediate member (30C), the dimension between the outer surfaces of the ends of the outer panels (11) and (12) of the first panel (10A) and the outer sides of the second panel (20) The dimensions between the outer surfaces of the end portions of the plate portions (21) and (22) are corrected to the same size, and the outer surface of the first connection portion (37) is connected to the first outer plate portions (11) on both sides thereof. The outer surface of the second connecting portion (38) is flush with the outer surfaces of the ends of the second outer plate portions (12) and (22) on both sides thereof. It has become.

In the third embodiment, since the first and second connecting portions (37) and (38) are both wide, the intermediate member (30C) and the first outer plate portion (1A) of the first panel (10A). 11), and the first part of the intermediate member (30C) and the second panel (20)
The joining with the outer plate part (21) is performed individually. Similarly, the joining of the intermediate member (30C) and the second outer plate portion (12) of the first panel (10A), and the intermediate member (30C) and the second outer plate portion (22) of the second panel (20). Bonding is performed individually.

By using such a wide intermediate member (30C), it is possible to adjust the dimensions of the entire panel structure.

In the fourth embodiment shown in FIG. 6, in the intermediate member (30D), the first and second fitting projections (31a) and (31b) of the first fitting portion (31) have the first support wall portion (31). 33), the first and second fitting projections (32a) and (32b) of the second fitting portion (32) are integrally connected by the second support wall portion (34), and are wide. First and second connection parts (37)
(38) is integrally connected at one end in the width direction by the first support wall (33), and is integrally connected at the other end by the second support wall (34). A hollow portion is formed between the first and second support wall portions (33) (34) and the first and second connection portions (37) (38) for the purpose of weight reduction and the like. Have been. Other configurations are the same as those of the third embodiment.

In the fifth and sixth embodiments shown in FIGS. 7 and 8, the first panel (10B) has both outer plate portions (11) and (12).
Are integrally connected at their ends by a connecting plate portion (13). The dimension between the outer surfaces of the outer panels (21) and (22) of the second panel (20) is the same as that of the first panel (10).
B) is smaller than the dimension between the outer surfaces of the outer plates (11) and (12). Other configurations of both panels (10B) (20)
This is the same as the first embodiment.

The fifth and sixth embodiments show a case where a panel structure is manufactured using the first panel (10B) and the second panel (20) having such a configuration.

First, a fifth embodiment shown in FIG. 7 will be described.

In the fifth embodiment, the intermediate member (30E)
Are first and second fitting projections (32a) (32b), which are fitting portions (32) fitted into the openings (24) of the second panel (20).
) And the first and second fitting projections (32a) (32b).
, A plate-shaped support wall (34) integrally connected to the first fitting projection (32a), a first positioning projection (35) integrally projecting from the first fitting projection (32a), and the second fitting projection (35). 32b), and a second positioning projection (36) integrally formed with the projection 32b).

The first and second positioning projections (35)
For the same reason as in the first embodiment, the width (H) of (36) is set to the probe (4) of the welding tool (40) for friction stir welding.
It is smaller than the diameter of 2) and desirably 1 mm or less.

In the fifth embodiment, the ends of the outer panels (11) and (12) of the first panel (10B) and the outer panels (21) and (21) of the second panel (20) are provided. When butting against the end of the intermediate member (22), the first and second fitting projections (32a) and (32b) of the intermediate member (30E) are inserted into the opening (24) of the second panel (20).
Until the first and second positioning projections (35) and (36) come into contact with the end surfaces of the outer panels (21) and (22) of the second panel (20).
Insert tightly. As a result, the opening (24) of the second panel (20) is forcibly expanded, so that the gap between the outer surfaces of the ends of both the outer plates (21) and (22) of the second panel (20) is formed. The dimensions are modified to be the same as the dimensions between the outer surfaces of the ends of the outer panels (11) and (12) of the first panel (10B). The support wall (34) is arranged so as to overlap with the connecting plate (13) of the first panel (10B).

The outer surfaces of the ends of the outer panels (11) and (12) of the first panel (10B) and the ends of the outer panels (21) and (22) of the second panel (20) are formed. While rotating the probe (42) of the joining tool (40) while keeping the outer surface flush with the outer surface, the probe (42) is attached to the first positioning projections (35) by the first outer plates on both sides thereof. The probe (42) is inserted so as to straddle the parts (11) and (21), and the first outer plate parts (11)
Move relatively along the edge of (21). As a result, the end of the first outer plate portion (11) of the first panel (10B) and the end of the first outer plate portion (21) of the second panel (20) are simultaneously formed over the entire length of the intermediate member. (30E). By performing the same joining operation, the end of the second outer plate (12) of the first panel (10B) and the end of the second outer plate (22) of the second panel (20) are connected. Is simultaneously joined to the intermediate member (30E) over its entire length.

Next, a sixth embodiment shown in FIG. 8 will be described.

In the sixth embodiment, the intermediate member (30F)
Is a wide first connecting member connecting the ends of the first outer plate portions (11) and (21) instead of the first and second positioning projections (35) and (36) of the fifth embodiment. It has a connecting portion (37) and a wide second connecting portion (38) for connecting the ends of the second outer plate portions (12) and (22).

The ends of both outer plates (11) and (12) of the first panel (10B) and the ends of both outer plates (21) and (22) of the second panel (20) are In a state where the two panels abut each other via the intermediate member (30F), the dimension between the outer surfaces of the ends of the outer panels (21) and (22) of the second panel (20) is equal to the outer dimensions of the first panel (10B) The dimension between the outer surfaces of the end portions of the plate portions (11) and (12) is corrected to be the same, and the outer surface of the first connection portion (37) has the first outer plate portions (11) (21) on both sides thereof. ) Is flush with the outer surface of the end, and the outer surface of the second connecting portion (38) is also
It is flush with the outer surfaces of the ends of the second outer plates (12, 22) on both sides thereof.

In the sixth embodiment, since the first and second connecting portions (37) and (38) are both wide,
Similarly to the fourth embodiment, the joining of the intermediate member (30F) and the first outer plate portion (11) of the first panel (10B) and the first member of the intermediate member (30F) and the second panel (20) are performed. The joining with the outer plate part (21) is performed individually. Similarly, the intermediate member (30
F) and the second panel member (12) of the first panel (10B), and the intermediate member (30F) and the second panel member (22) of the second panel (20) are individually connected. It is performed. By using such a wide intermediate member (30F), the third
As in the embodiment, it is possible to perform dimensional adjustment on the entire width of the panel structure.

Although the embodiments of the present invention have been described above, the present invention is not limited to these embodiments. For example, at least one of the two panels may have the connecting plate portions (13) and (23) arranged in a truss shape.

[0072]

According to the present invention having the above-described structure, the following effects can be obtained.

According to the first aspect of the present invention, the intermediate member is provided with the end portions of both outer plate portions of the first panel in a state where the dimensional difference between the outer surfaces of the end portions of both outer plate portions of the first and second panels is corrected. And the end portions of the outer panels of the second panel are joined by friction stir welding. Therefore, at the time of friction stir welding, the outer portions of the first and second panels are joined together. Since the dimensional difference between the outer surfaces of the ends of the plate portion has been corrected, the step caused by the dimensional difference can be eliminated, and as a result, the welding tool for friction stir welding can be smoothly moved relative to each other. Become
The occurrence of joint defects can be prevented, and a panel structure having a good joint state can be obtained.

According to the second aspect of the present invention, similarly to the first aspect of the present invention, the dimensional difference between the outer surfaces of the ends of the outer panels of the first and second panels is corrected during friction stir welding. Because
The step caused by the dimensional difference can be eliminated, and as a result, the welding tool for friction stir welding can be smoothly moved relative to each other, and the occurrence of welding defects can be prevented, This makes it possible to obtain a panel structure having a good joined state.

According to a third aspect of the present invention, the fitting portion of the intermediate member includes:
Since the positioning protrusion is provided, the positioning of the fitting portion can be easily performed, and one relative movement operation of the joining tool allows one of the outer plate portions on both sides of the positioning protrusion to be performed. Since the joining of the outer plate portion and the intermediate member and the joining of the other outer plate portion and the intermediate member can be performed simultaneously,
There is an advantage that the joining work efficiency is improved.

According to the fourth aspect of the present invention, it is possible to provide a panel structure having a good bonding state, as in the first aspect of the present invention.

According to the fifth aspect of the present invention, a panel structure having a good bonding state can be provided as in the second aspect of the present invention.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of two panels and an intermediate member according to a first embodiment of the present invention, in which (a) shows a state before butting both panels through an intermediate member, and (b) shows both panels; Shows a state in which are abutted via an intermediate member.

FIG. 2 is an enlarged cross-sectional view of both panels and an intermediate member, showing a state during friction stir welding.

FIG. 3 is a cross-sectional view of both panels and the intermediate member, showing a state where both panels are joined to an intermediate member.

4A and 4B are cross-sectional views of two panels and an intermediate member according to a second embodiment of the present invention, wherein FIG. 4A shows a state in which both panels are abutted via an intermediate member, and FIG. Shows a state where is joined to the intermediate member.

5A and 5B are cross-sectional views of two panels and an intermediate member showing a third embodiment of the present invention, wherein FIG. 5A shows a state in which both panels are butted via an intermediate member, and FIG. Shows a state where is joined to the intermediate member.

FIGS. 6A and 6B are cross-sectional views of two panels and an intermediate member showing a fourth embodiment of the present invention, wherein FIG. 6A shows a state in which both panels are abutted via an intermediate member, and FIG. Shows a state where is joined to the intermediate member.

FIGS. 7A and 7B are cross-sectional views of two panels and an intermediate member showing a fifth embodiment of the present invention, wherein FIG. 7A shows a state where both panels are abutted via an intermediate member, and FIG. Shows a state where is joined to the intermediate member.

FIGS. 8A and 8B are cross-sectional views of two panels and an intermediate member showing a sixth embodiment of the present invention, wherein FIG. 8A shows a state in which both panels are abutted via an intermediate member, and FIG. Shows a state where is joined to the intermediate member.

9A and 9B are diagrams illustrating a conventional method of manufacturing a panel structure, wherein FIG. 9A is a perspective view of two panels, and FIG. 9B is a cross-sectional view illustrating a state where both panels are butted.

[Explanation of symbols]

 10A, 10B ... first panel 11 ... first outer plate part 12 ... second outer plate part 13 ... connecting plate part 14 ... opening 20 ... second panel 21 ... first outer plate part 22 ... second outer plate part 23 ... Connecting plate part 24 ... Opening parts 30A to 30F ... Intermediate member 31 ... First fitting part 32 ... Second fitting part 35, 36 ... Positioning projection 40 ... Joining tool for friction stir welding 42 ... Pin probe W ... Joint

Claims (5)

[Claims] 1. A flat plate (11) (12) which is spaced apart in parallel and a connecting plate (13) which integrally connects these two plates at an intermediate portion thereof. A first panel (10A) having an opening (14) between the ends of the outer plates, and two flat outer plates (21) arranged in parallel and separated from each other.
(22) and a connecting plate portion (23) integrally connecting these outer plates at an intermediate portion thereof, and an opening (24) is formed between the ends of the outer plates, and A second panel (20) in which the dimension between the outer surfaces of the outer panels is smaller than the dimension between the outer surfaces of the outer panels of the first panel (10A);
And a fitting portion (31) (32) fitted into at least the opening (24) of the second panel among the openings (14) (24) of the first and second panels. Along the ends of the outer panels of the first and second panels between the ends of the outer panels of the first panel (10A) and the ends of the outer panels of the second panel (20). And an intermediate member (30) interposed between the first panel (10A) and the second panel.
Connect the ends of both outer plates of the panel (20) to the intermediate member (3
0), the first and second panels (10A) (20) and the intermediate member (30) are joined and integrated, and the first and second panels (10A) and (20) are joined together. At the time of the butting operation of the panels (10A) and (20), the fitting portions (31) and (32) of the intermediate member are moved to the first position.
And by fitting into at least the opening (24) of the second panel of the openings (14) (24) of the second panel,
The opening of the panel is forcibly expanded to correct the dimensional difference between the outer surfaces of the ends of the outer plates of the first and second panels (10A) (20). Joining the ends of both outer plates of the first panel (10A) and the ends of both outer plates of the second panel (20) to the intermediate member (30) by friction stir welding. A method for manufacturing a panel structure characterized by the following. 2. A flat plate part (11) (12) which is spaced apart in parallel and a connecting plate part (13) which integrally connects these two outer plate parts at their ends. A first panel (10B) having two flat outer plates (21) spaced apart in parallel
(22) and a connecting plate portion (23) integrally connecting these outer plates at an intermediate portion thereof, and an opening (24) is formed between the ends of the outer plates, and A second panel (20) in which the dimension between the outer surfaces of the outer panels is smaller than the dimension between the outer surfaces of the outer panels of the first panel (10B);
And a fitting part (32) fitted into the opening part (24) of the second panel, and the ends of both outer plate parts of the first panel (10B) and the second panel (20). An intermediate member (30) interposed between the ends of both outer plate portions along the ends of both outer plate portions of the first and second panels, and the first panel (10B) End portions of both outer plate portions and the second
Connect the ends of both outer plates of the panel (20) to the intermediate member (3
0), the first and second panels (10B) (20) and the intermediate member (30) are joined and integrated with each other through the first and second panels (10B) and (20). At the time of the butting operation of the panels (10B) and (20), the fitting portion (32) of the intermediate member is fitted into the opening portion (24) of the second panel to force the opening portion of the second panel. The first and second panels (10B) and (20) are corrected to correct the dimensional difference between the outer surfaces of the ends of the outer plates of the first and second panels (10B) and (20). An end of both outer plates of the first panel (10B) and ends of both outer plates of the second panel (20) are joined by friction stir welding. Production method. 3. A welding tool (40) for friction stir welding having a rotatable pin-shaped probe (42) is prepared. The fitting portion (31) (32) of the intermediate member (30) includes the probe ( 42) is provided with a positioning protrusion (35) having a width smaller than the diameter of 42) and abutting against the end surface of the outer panel portion of the corresponding panel. The positioning projection (35) is sandwiched between the end surface of the outer plate of the first panel and the end surface of the outer plate of the second panel. In this state, the probe (42) is The probe is inserted into the positioning projection (35) so as to straddle the outer plates (11) and (21) on both sides thereof, and the probe (42) is moved relative to the panel along the edge of the outer plate of the panel. The outer plate (11) of one of the outer plates on both sides and the intermediate member (30). 3. The method for manufacturing a panel structure according to claim 1, wherein the joining and the joining of the other outer plate portion (21) and the intermediate member (30) are performed simultaneously. 4. A flat plate member (11) (12) which is spaced apart in parallel and a connecting plate member (13) which integrally connects these two outer plate members at an intermediate portion thereof. A first panel (10A) having an opening (14) between the ends of the outer plates, and two flat outer plates (21) arranged in parallel and separated from each other.
(22) and a connecting plate portion (23) integrally connecting these outer plates at an intermediate portion thereof, and an opening (24) is formed between the ends of the outer plates, and A second panel (20) in which the dimension between the outer surfaces of the outer panels is smaller than the dimension between the outer surfaces of the outer panels of the first panel (10A);
And a fitting portion (31) (32) fitted into at least the opening (24) of the second panel of the openings (14) (24) of the first and second panels. Along the edges of the outer panels of the first and second panels between the ends of the outer panels of the first panel (10A) and the ends of the outer panels of the second panel (20). And an intermediate member (30) interposed between the first panel (10A) and the second panel.
The ends of both outer plates of the panel (20) are connected to the intermediate member (3
0), and the first and second panels (10A) (20) and the intermediate member (30) are joined and integrated with each other, and a fitting portion of the intermediate member is provided. (31) and (32) are at least the second of the openings (14) and (24) of the first and second panels.
By being fitted into the opening (24) of the panel, the opening of the panel is forcibly expanded, and the ends of both outer plates of the first and second panels (10A) and (20) are opened. The dimensional difference between the outer surfaces of the first and second parts is corrected, and in this state, the intermediate member (30) has both ends of the outer panels of the first panel (10A) and the outer parts of the second panel (20). A panel structure, wherein an edge of a plate portion is joined by friction stir welding. 5. Two flat outer plates (11) and (12), which are spaced apart in parallel, and a connecting plate (13) in which both outer plates are integrally connected at their ends. A first panel (10B) having two flat outer plates (21) spaced apart in parallel
(22) and a connecting plate portion (23) integrally connecting these outer plates at an intermediate portion thereof, and an opening (24) is formed between the ends of the outer plates, and A second panel (2) in which the dimension between the outer surfaces of the outer panels is smaller than the dimension between the outer surfaces of the outer panels of the first panel (10B).
0), and a fitting portion (32) fitted into the opening (24) of the second panel, and both ends of the outer plates of the first panel (10B) and the second panel (20). And an intermediate member (30) interposed along the ends of the outer panels of the first and second panels between the first panel ( 10B) The end portions of both outer plate portions and the second
The ends of both outer plates of the panel (20) are connected to the intermediate member (3
0), the first and second panels (10B) (20) and the intermediate member (30) are joined and integrated with each other, and a fitting portion of the intermediate member is provided. The (32) is fitted into the opening (24) of the second panel, whereby the opening of the second panel is forcibly expanded and the first and second panels (10B) ( The dimensional difference between the outer surfaces of the ends of the outer panels of (20) is corrected, and in this state, the intermediate member (30) has the ends of the outer panels of the first panel (10B), and A panel structure, wherein ends of both outer plates of the second panel (20) are joined by friction stir welding.