JP2009095882A - Structure for joining members - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a structure for joining members which facilitates fabrication and is suitable for a roof structure. <P>SOLUTION: The structure for joining members includes a frame roof 1 in which a lip 1f bent from the end edge of a linearly extending outer flange 1b is formed, a panel roof 2 of which the edge overhangs the outer flange 1b, and a trim roof 3 which overhangs the edge of the panel roof 2 and covers the lip 1f of the outer flange 1b. A material deriving from a portion forming the outer flange 1b is mixed with a material, which derives from the edge of the panel roof 2 and the portion of the trim roof 3 overlapping with the panel roof 2, by frictional heat and plastic flow so as to form an assimilation layer 16. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a member joining structure.

  In recent years, in the automobile industry, the application of lightweight materials to vehicle structures has been promoted from the viewpoint of improving fuel efficiency, complying with exhaust gas regulations, energy saving, life cycle cost, etc., and the combination of lightweight materials to vehicle structures has increased. As a result, the importance of bonding technology is increasing.

  In the roof structure of a box-shaped luggage compartment among vehicle structures, a method of arranging a trim roof at the edge of a panel roof made of an aluminum alloy and rivet-fastening both sides is common.

  7 to 9 show an example of a conventional member joining structure. A frame roof 1, a panel roof 2, a trim roof 3, and a butyl rubber 4 are fastened using rivets 6 to form a roof structure 9.

  The frame roof 1 has a substantially Z-shaped cross section having an outer flange 1b protruding outward from the upper end of the vertical portion 1a and an inner flange 1c protruding outward from the lower end of the same vertical portion 1a. .

  A plurality of channel members 1d extending horizontally in a direction orthogonal to the frame roof 1 are attached to the upper surface of the inner flange 1c at intervals.

  A fixing hole 1e for attaching the side wall structure 11 is formed in the vertical portion 1a, and a lip 1f protruding downward is formed at the edge of the outer flange 1b. The roof structure 9 and the side wall structure 11 are formed. Thus, a vehicle box-shaped luggage compartment as shown in FIG. 10 is formed.

  The panel roof 2 is a flat plate, and covers the frame roof 1 and the channel material 1d as a whole, and the edge covers the outer flange 1b of the frame roof 1.

  The trim roof 3 is an angle member, and covers the butyl rubber 4 laid on the edge of the panel roof 2 to cover the small ends of the panel roof 2 and the butyl rubber 4 and the lip 1 f of the frame roof 1.

  An opening 8 for passing the shaft portion 7 of the rivet 6 is formed in the overlapping portion 5 of the frame roof 1, the panel roof 2, the butyl rubber 4, and the trim roof 3, and the rivet 6 has a head portion. 6a is in contact with the trim roof 3, and the caulking portion 6b is in contact with the outer flange 1b.

  Although the rivets 6 are arranged in the longitudinal direction on the outer flange 1b of the frame roof 1, as shown in FIG. 9, when the interval between the rivets 6 is increased, the overlapping portion 5 swells around the rivets 6 due to caulking. Therefore, a large amount of rivets 6 are required, and there are many places where the openings 8 are formed.

  Further, the upper surface of the roof structure 9 is covered with the sealing material 10 from the trim roof 3 to the panel roof 2, and rainwater passes through the gap between the inner peripheral surface of the opening 8 of each member and the outer peripheral surface of the shaft portion 7 of the rivet 6, This prevents leakage into the cargo compartment.

  That is, the member joining structure using the rivet 6 has to go through various processes such as drilling of the opening 8, caulking of the rivet 6, measures against water leakage by the sealing material 10, and the rivet 6 and the sealing material 10 are also included. It will be added to the weight of the box-type cargo compartment.

  As a method of connecting members without using auxiliary materials such as the rivet 6, there is friction stir welding (see, for example, Patent Document 1).

  In this technique, the object to be joined is placed on a support tool that is a backing member, and the material that has been softened by frictional heat and plastic flow is pressed against the object while rotating the joining tool. Agitate to assimilate.

  Next, the part to which the material is assimilated is cured by separating the joining tool from the object to be joined, and the members to be joined are joined to each other.

  The joining tool includes a columnar shoulder portion and a pin portion that is coaxial with the shoulder portion and projects toward the tip of the tool and has a smaller outer diameter than the shoulder portion.

In addition, a method has already been proposed in which outer plates made of an aluminum alloy as a structure of a railway vehicle or the like are connected to each other by friction stir welding (see, for example, Patent Document 2). Some use an aluminum alloy (see, for example, Patent Document 3).
JP 2004-136365 A Japanese Patent Laying-Open No. 2005-080812 Japanese Patent Laid-Open No. 9-66866

  However, in the joint structure of Patent Document 2, only friction stir welding is applied to the joint in which the edges of the outer plates are overlapped with each other, and no countermeasures against water leakage are taken into consideration. It cannot be said that it is suitable for the structure.

  The present invention has been made in view of the above-described circumstances, and an object thereof is to provide a member joining structure that is easy to work and that is suitable for a roof structure.

  In order to achieve the above object, according to the first aspect of the present invention, a main member having a flange, a flat plate-like first member to be joined whose edge covers the flange of the main member, and the first member to be joined. A second member to be joined that covers the edge of the member, and the material derived from the portion forming the flange of the main member by frictional heat and plastic flow is assimilated into the first and second members to be joined; A configuration is adopted in which the vicinity of the surface boundary of the first and second members to be joined is covered with a sealing material.

  In the invention according to claim 2, the main member having a flange, the flat plate-like first member to be joined whose edge is covered with the flange of the main member, and the edge of the first member to be joined are covered. A second member to be joined, and the material derived from the second member to be joined by frictional heat and plastic flow is assimilated into the first member to be joined and the portion forming the flange of the main member; The configuration is such that the vicinity of the surface boundary of the second member to be joined is covered with a sealing material.

  The invention according to claim 3 is provided with a main member having a linearly extending flange, and a flat plate-like joined member whose edge is covered with the flange of the main member, and hits the flange of the main member by frictional heat and plastic flow. The material derived from the part is assimilated to the member to be bonded, and the vicinity of the surface boundary between the main member and the member to be bonded is covered with a sealing material.

  The invention according to claim 4 is provided with a main member having a linearly extending flange, and a flat plate-like member to be joined whose edge is covered with the flange of the main member, and is derived from the member to be joined by frictional heat and plastic flow. The material to be assembled is assimilated to the part forming the flange of the main member, and the vicinity of the surface boundary between the main member and the member to be joined is covered with the sealing material.

  According to the member joining structure of the present invention, the following excellent effects can be obtained.

  (1) In the first aspect of the invention, since the material derived from the main member is assimilated with respect to the first and second members to be joined, the drilling process becomes unnecessary, and the work process can be shortened. The leakage of the site can be prevented.

  (2) In the invention according to claim 2, since the material derived from the second member to be joined is assimilated with respect to the first member to be joined and the main member, the drilling process becomes unnecessary, and the work process is reduced. It can be shortened, and water leakage at the joint site can be prevented.

  (3) In the invention described in claim 3, since the material derived from the main member is assimilated with respect to the member to be joined, the drilling process becomes unnecessary, the work process can be shortened, and water leakage at the joining portion is prevented. Can do.

  (4) In the invention according to claim 4, since the material derived from the member to be joined is assimilated with respect to the main member, the drilling process becomes unnecessary, the work process can be shortened, and water leakage at the joining portion is prevented. Can do.

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

  FIG. 1 shows a first example of a member joining structure according to the present invention. In the figure, the same reference numerals as those in FIGS. 7 and 8 denote the same parts.

  In this member joining structure, a frame roof 1 having a substantially Z-shaped cross section, a panel covering the frame roof 1 and the channel material 1d as a whole, and an edge covering the outer flange 1b of the frame roof 1 A roof 2, and a trim roof 3 that covers the edge of the panel roof 2 and covers the small edge and the lip 1 f of the frame roof 1 are provided.

  The frame roof 1, the panel roof 2, and the trim roof 3 are made of aluminum alloy.

  The material derived from the portion forming the outer flange 1b of the frame roof 1 is mixed with the material derived from the edge of the panel roof 2 and the portion of the trim roof 3 overlapping the panel roof 2 by frictional heat and plastic flow, An assimilation layer 16 is formed (see FIG. 1D).

  When the frame roof 1, the panel roof 2, and the trim roof 3 are joined to each other, a backing member 12 made of steel and a pin portion 14 having a small outer diameter made of steel are coaxially connected to a cylindrical shoulder portion 15. A joining tool 13 having a shape connected to is used.

  The pin of the joining tool 13 rotating toward the lower surface of the outer flange 1b of the frame roof 1 with the backing member 12 in contact with the upper surface of the portion of the trim roof 3 that overlaps the panel roof 2 When the portion 14 is pressed (see FIGS. 1 (a) and 1 (b)), the material derived from the portion forming the outer flange 1b softened by frictional heat and plastic flow, the edge of the panel roof 2, and the trim The material originating from the portion of the roof 3 that overlaps the panel roof 2 is mixed (see FIG. 1C).

  Thereafter, when the joining tool 13 is pulled away from the outer flange 1b to solidify the plastic flow site, the outer flange 1b, the panel roof 2, and the trim roof 3 of the frame roof 1 are joined together.

  A concave portion 18 corresponding to the pin portion 14 of the joining tool 13 is formed from the outer flange 1b toward the trim roof 3. However, since the concave portion 18 does not penetrate the trim roof 3, rainwater is below the roof structure 9. Therefore, the box-type cargo compartment can be reduced in weight by the amount not using the secondary material, and naturally, the drilling process is not required and the work process can be shortened.

  Furthermore, the vicinity of the upper surface boundary between the trim roof 3 and the panel roof 2 is covered with a sealing material 19 to prevent corrosion from entering water between the two members.

  FIG. 2 shows a second example of the member joining structure according to the present invention. In the figure, the same reference numerals as those in FIGS. 1, 7, and 8 denote the same parts.

  In this member joining structure, a frame roof 1 having a substantially Z-shaped cross section, a panel covering the frame roof 1 and the channel material 1d as a whole, and an edge covering the outer flange 1b of the frame roof 1 A roof 2, and a trim roof 3 that covers the edge of the panel roof 2 and covers the small edge and the lip 1 f of the frame roof 1 are provided.

  The frame roof 1, the panel roof 2, and the trim roof 3 are made of aluminum alloy.

  The material derived from the portion of the trim roof 3 that overlaps the panel roof 2 is mixed with the material derived from the edge forming the edge of the panel roof 2 and the outer flange 1b of the frame roof 1 by frictional heat and plastic flow, An assimilation layer 16 is formed (see FIGS. 2B and 2C).

  When the frame roof 1, the panel roof 2, and the trim roof 3 are joined to each other, a backing member 12 made of steel and a pin portion 14 having a small outer diameter made of steel are coaxially connected to a cylindrical shoulder portion 15. A joining tool 13 having a shape connected to is used.

  The pin of the joining tool 13 that rotates toward the upper surface of the portion of the trim roof 3 that overlaps the panel roof 2 with the backing member 12 in contact with the lower surface of the outer flange 1b of the frame roof 1 When the portion 14 (see FIG. 2A) is pressed in the same manner as in the first example, the material derived from the trim roof 3 softened by frictional heat and plastic flow, the edge of the panel roof 2, and the outer flange 1b are formed. The materials derived from the parts are mixed.

  Thereafter, when the joining tool 13 is pulled away from the trim roof 3 to solidify the plastic flow site, the trim roof 3, the panel roof 2, and the outer flange 1b of the frame roof 1 are joined together.

  Further, the vicinity of the upper boundary between the trim roof 3 and the panel roof 2 is covered with a sealing material 19 to prevent water from entering the gap between the two members to prevent corrosion (see FIG. 2B).

  A concave portion 18 corresponding to the pin portion 14 of the joining tool 13 is formed from the trim roof 3 toward the outer flange 1b. However, since the concave portion 18 does not penetrate the outer flange 1b, rainwater is below the roof structure 9. Therefore, the box-type cargo compartment can be reduced in weight by the amount not using the secondary material, and naturally, the drilling process is not required and the work process can be shortened.

  Alternatively, if the covering range is expanded until the concave portion 18 is filled with the sealing material 19 (see FIG. 2C), water can be prevented from collecting in the concave portion 18.

  FIG. 3 shows a third example of the member joining structure according to the present invention. In the figure, the same reference numerals as those in FIGS. 1, 2, 7, and 8 denote the same parts.

  In this member joining structure, a frame roof 1 having a substantially Z-shaped cross section, a panel covering the frame roof 1 and the channel material 1d as a whole, and an edge covering the outer flange 1b of the frame roof 1 And a roof 2.

  The frame roof 1 and the panel roof 2 are made of an aluminum alloy.

  The material derived from the part forming the outer flange 1b of the frame roof 1 is mixed with the material derived from the edge of the panel roof 2 by frictional heat and plastic flow to form an assimilated layer 16 (FIG. 3 ( d)).

  When joining the frame roof 1 and the panel roof 2 to each other, a backing member 12 made of steel and a pin portion 14 having a small outer diameter made of steel and coaxially connected to a cylindrical shoulder portion 15 are coaxially connected. The joining tool 13 is used.

  The pin of the joining tool 13 that rotates toward the lower surface of the outer flange 1b of the frame roof 1 with the backing member 12 in contact with the upper surface of the portion of the panel roof 2 that overlaps the outer flange 1b. When the portion 14 is pressed (see FIGS. 3 (a) and 3 (b)), the material derived from the portion forming the outer flange 1b softened by frictional heat and plastic flow, and the edge of the panel roof 2 The materials to be mixed are mixed (see FIG. 3C).

  Thereafter, when the joining tool 13 is pulled away from the outer flange 1b to solidify the plastic flow site, the outer flange 1b of the frame roof 1 and the panel roof 2 are joined together.

  Further, the vicinity of the upper boundary between the panel roof 2 and the outer flange 1b is covered with a sealing material 19 to prevent water from entering the gap between the two members to prevent corrosion (see FIG. 3 (d)).

  A concave portion 18 corresponding to the pin portion 14 of the joining tool 13 is formed from the outer flange 1 b toward the panel roof 2, but since this concave portion 18 does not penetrate the panel roof 2, rainwater is below the roof structure 9. Therefore, the box-type cargo compartment can be reduced in weight by the amount not using the secondary material, and naturally, the drilling process is not required and the work process can be shortened.

  FIG. 4 shows a fourth example of the member joining structure according to the present invention. In the figure, the same reference numerals as those in FIGS. 1, 2, 3, 7, and 8 denote the same parts.

  In this member joining structure, a frame roof 1 having a substantially Z-shaped cross section, a panel covering the frame roof 1 and the channel material 1d as a whole, and an edge covering the outer flange 1b of the frame roof 1 And a roof 2.

  The frame roof 1 and the panel roof 2 are made of an aluminum alloy.

  The material coming to the edge of the panel roof 2 is mixed with the material derived from the portion forming the outer flange 1b of the frame roof 1 by frictional heat and plastic flow to form an assimilation layer 16 (FIG. 4 ( d)).

  When joining the frame roof 1 and the panel roof 2 to each other, a backing member 12 made of steel and a pin portion 14 having a small outer diameter made of steel and coaxially connected to a cylindrical shoulder portion 15 are coaxially connected. The joining tool 13 is used.

  The pin of the joining tool 13 rotating toward the upper surface of the portion overlapping the outer flange 1b of the panel roof 2 with the backing member 12 in contact with the lower surface of the outer flange 1b of the frame roof 1 When the part 14 is pressed (see FIGS. 4 (a) and 4 (b)), the material derived from the edge of the panel roof 2 softened by frictional heat and plastic flow, and the part forming the outer flange 1b The materials to be mixed are mixed (see FIG. 4C).

  Thereafter, when the joining tool 13 is pulled away from the panel roof 2 to solidify the plastic flow site, the panel roof 2 and the outer flange 1b of the frame roof 1 are joined together.

  Further, the vicinity of the upper boundary between the panel roof 2 and the outer flange 1b is covered with a sealing material 19 to prevent water from entering the gap between the two members to prevent corrosion (see FIG. 4D).

  A concave portion 18 corresponding to the pin portion 14 of the joining tool 13 is formed from the panel roof 2 toward the outer flange 1b. However, since this concave portion 18 does not penetrate the outer flange 1b, rainwater is below the roof structure 9 Therefore, the box-type cargo compartment can be reduced in weight by the amount not using the secondary material, and naturally, the drilling process is not required and the work process can be shortened.

  FIG. 5 shows a fifth example of the member joining structure according to the present invention. In the figure, the same reference numerals as those in FIGS. 1, 7, and 8 denote the same parts.

  The frame roof 1 used for this member joining structure includes an outer flange 1b protruding outward from the upper end of the vertical portion 1g, an inner flange 1c protruding outward from the lower end of the same vertical portion 1g, and an edge of the outer flange 1b. And a projecting portion 1h extending downward and having a substantially Z-shaped cross section.

  A plurality of channel members 1d extending horizontally in a direction orthogonal to the frame roof 1 are attached to the upper surface of the inner flange 1c at intervals.

  The outer flange 1 b of the frame roof 1 covers the edge of the panel roof 2 and the trim roof 3 in order, and the channel material 1 d is entirely covered by the panel roof 2.

  The frame roof 1, the panel roof 2, and the trim roof 3 are made of aluminum alloy.

  The material derived from the part forming the outer flange 1b of the frame roof 1 is mixed with the edge of the panel roof 2 and the material derived from the trim roof 3 by frictional heat and plastic flow to form an assimilated layer 16. (See FIG. 5D).

  When the frame roof 1, the panel roof 2, and the trim roof 3 are joined to each other, a backing member 12 made of steel and a pin portion 14 having a small outer diameter made of steel are coaxially connected to a cylindrical shoulder portion 15. A joining tool 13 having a shape connected to is used.

  When the pin member 14 of the rotating joining tool 13 is pressed toward the lower surface of the outer flange 1b of the frame roof 1 with the backing member 12 in contact with the upper surface of the trim roof 3 (FIG. 5A (See FIG. 5 (b)), the material derived from the portion forming the outer flange 1b softened by frictional heat and plastic flow, the edge of the panel roof 2, and the material derived from the trim roof 3 are mixed ( (Refer FIG.5 (c)).

  Thereafter, when the joining tool 13 is pulled away from the outer flange 1b to solidify the plastic flow site, the outer flange 1b, the panel roof 2, and the trim roof 3 of the frame roof 1 are joined together.

  A concave portion 18 corresponding to the pin portion 14 of the joining tool 13 is formed from the outer flange 1b toward the trim roof 3. However, since the concave portion 18 does not penetrate the trim roof 3, rainwater is below the roof structure 9. Therefore, the box-type cargo compartment can be reduced in weight by the amount not using the secondary material, and naturally, the drilling process is not required and the work process can be shortened.

  Further, the vicinity of the upper boundary of the outer flange 1b of the trim roof 3, the panel roof 2, and the frame roof 1 is covered with a seal material 19 to prevent water from entering the gap between the two members to prevent corrosion.

  FIG. 6 shows a sixth example of the member joining structure according to the present invention. In the figure, the same reference numerals as those in FIGS. 3, 5, 7, and 8 denote the same parts.

  The frame roof 1 used for this member joining structure includes an outer flange 1b protruding outward from the upper end of the vertical portion 1g, an inner flange 1c protruding outward from the lower end of the same vertical portion 1g, and an edge of the outer flange 1b. And a projecting portion 1h extending downward, and exhibiting a cross section obtained by adding a circular arc and a substantially U shape to a substantially Z shape.

  A plurality of channel members 1d extending horizontally in a direction orthogonal to the frame roof 1 are attached to the upper surface of the inner flange 1c at intervals.

  The outer flange 1 b of the frame roof 1 covers the edge of the panel roof 2, and the channel material 1 d is entirely covered with the panel roof 2.

  The frame roof 1 and the panel roof 2 are made of an aluminum alloy.

  The material derived from the part forming the outer flange 1b of the frame roof 1 is mixed with the material derived from the edge of the panel roof 2 by frictional heat and plastic flow to form an assimilated layer 16 (FIG. 6 ( d)).

  When joining the frame roof 1 and the panel roof 2 to each other, a backing member 12 made of steel and a pin portion 14 having a small outer diameter made of steel and coaxially connected to a cylindrical shoulder portion 15 are coaxially connected. The joining tool 13 is used.

  The pin of the joining tool 13 that rotates toward the lower surface of the outer flange 1b of the frame roof 1 with the backing member 12 in contact with the upper surface of the portion of the panel roof 2 that overlaps the outer flange 1b. When the portion 14 is pressed (see FIGS. 6 (a) and 6 (b)), it originates from the material forming the outer flange 1b softened by frictional heat and plastic flow, and from the edge of the panel roof 2 The materials to be mixed are mixed (see FIG. 6C).

  Thereafter, when the joining tool 13 is pulled away from the outer flange 1b to solidify the plastic flow site, the outer flange 1b of the frame roof 1 and the panel roof 2 are joined together.

  Further, the vicinity of the upper boundary between the panel roof 2 and the outer flange 1b is covered with a sealing material 19 to prevent water from entering the gap between the two members to prevent corrosion (see FIG. 6D).

  A concave portion 18 corresponding to the pin portion 14 of the joining tool 13 is formed from the outer flange 1 b toward the panel roof 2, but since this concave portion 18 does not penetrate the panel roof 2, rainwater is below the roof structure 9. Therefore, the box-type cargo compartment can be reduced in weight by the amount not using the secondary material, and naturally, the drilling process is not required and the work process can be shortened.

  In addition, the member joining structure of this invention is not limited only to embodiment mentioned above, Of course, it can add in the range which does not deviate from the summary of this invention.

  The member joining structure of the present invention can be applied to assembly processes of various structures.

It is a conceptual diagram which shows the 1st example of the member junction structure of this invention. It is a conceptual diagram which shows the 2nd example of the member junction structure of this invention. It is a conceptual diagram which shows the 3rd example of the member junction structure of this invention. It is a conceptual diagram which shows the 4th example of the member junction structure of this invention. It is a conceptual diagram which shows the 5th example of the member junction structure of this invention. It is a conceptual diagram which shows the 6th example of the member junction structure of this invention. It is a conceptual diagram which shows an example (before an assembly) of the conventional member joining structure. It is a conceptual diagram which shows an example (after an assembly) of the conventional member joining structure. It is a conceptual diagram which shows the deformation | transformation of the overlapping part by rivet fastening. It is a conceptual diagram which shows an example of the box-shaped luggage compartment of a vehicle.

Explanation of symbols

1 Frame roof (main member)
1b Outer flange 2 Panel roof (first material to be joined)
3 Trim roof (second material to be joined)
16 Assimilation layer 19 Sealing material

Claims (4)

  A main member having a flange, a flat plate-like first member to be joined whose edge covers the flange of the main member, and a second member to be joined that covers the edge of the first member to be joined, The material derived from the part forming the flange of the main member by frictional heat and plastic flow is assimilated into the first and second members to be joined, and the vicinity of the surface boundary between the first and second members to be joined is sealed. The member joining structure characterized by having covered by.   A main member having a flange, a flat plate-like first member to be joined whose edge covers the flange of the main member, and a second member to be joined that covers the edge of the first member to be joined, The material derived from the second member to be joined by frictional heat and plastic flow is assimilated into the first member to be joined and the part forming the flange of the main member, and the surfaces of the first and second members to be joined A member joining structure characterized in that the vicinity of the boundary is covered with a sealing material.   A main member having a linearly extending flange and a plate-like member to be joined whose edge portion covers the flange of the main member, and a material derived from a portion corresponding to the flange of the main member by frictional heat and plastic flow is joined. A member joining structure characterized in that it is assimilated to a member and the vicinity of the surface boundary between the main member and the joined member is covered with a sealing material.   A main member having a linearly extending flange, and a flat plate-like member to be joined whose edge is covered with the flange of the main member, and a material derived from the member to be joined by frictional heat and plastic flow, the flange of the main member A member joining structure characterized in that it is assimilated to a part to be formed, and the vicinity of the surface boundary between the main member and the member to be joined is covered with a sealing material.

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