JP4684113B2 - Bonding structure - Google Patents

Description

  The present invention relates to a joined structure in which a tubular body is passed through a hole formed in a metal member, the tubular body is expanded by electromagnetic forming, and both are joined, or a tubular body is formed in a hole formed in two metal members. The tubular structure is expanded by electromagnetic forming to improve the joint structure in which both metal members are joined.

In Patent Document 1, a hole is formed only in the plate-like wall on the rear side of a square-shaped metal member (bumper reinforcement) made up of front and rear plate-like walls and a plate-like connection wall connecting them in the front-rear direction, Alternatively, there is described a bonded structure in which holes are formed in the front and rear plate walls, a tubular body (bumper stay) made of an aluminum alloy is passed through the holes, the tubular body is expanded by electromagnetic forming, and both are joined. Yes.
In Patent Document 2, a hole is formed in both plate-like walls of a C-channel metal member composed of two plate-like walls and a plate-like connection wall connecting them, and a cylindrical body made of an aluminum alloy in the hole. The joint structure is described in which the tubular body is expanded by electromagnetic forming and joined together, thereby reinforcing the metallic member with the tubular body.
In Patent Document 3, a hole is formed in the plate-like wall of two C-channel metal members, the two metal members are combined so that the holes are arranged in a straight line, and a cylindrical body made of an aluminum alloy is formed in the hole. In addition, a joining structure is described in which a tubular body is expanded by electromagnetic forming, and thereby two metal members are joined by the tubular body.

JP 2004-237818 A JP 2002-160032 A JP 2002-86228 A

  However, in Patent Document 1, when a hole is formed only in a plate-like wall on the rear side of a metal member, and a cylindrical body is passed through the hole and joined by electromagnetic forming, there is a problem that the joining strength is weak. . On the other hand, when joining a cylindrical body to the plate-shaped wall before and behind a metal member, the front-end | tip (flange) of a cylindrical body protrudes ahead from the plate-shaped wall of the front side of a metal member, and, thereby, said plate-shaped wall Since the front surface is no longer flat, it is difficult to place another member in close contact therewith, and there is a problem that the strength of the metal member is reduced due to the formation of a large hole in the front plate-like wall. Patent Documents 2 and 3 also have the same problem as Patent Document 1 because the cylindrical body is joined to both plate-like walls of the metal member.

  The present invention is a bonded structure in which a metal member having a plate-like wall and a cylindrical body are joined using electromagnetic forming, or two metal members having a plate-like wall, which are tubular using electromagnetic forming. In a bonded structure joined by a body, the bonding strength and the strength of the metal member are not reduced, and at least one surface of the metal member is kept flat, and other members can be closely arranged as required. With the goal.

  The joint structure according to the present invention (Claim 1) includes a metal first member having a plurality of plate-like walls arranged at a predetermined interval in the front and rear, and one end closed and the other end opened. The bottom member is made of a second member made of an aluminum alloy, and a hole through which the body portion of the second member penetrates is formed in one or more plate-like walls on the rear side of the first member. The hole is not formed in the wall, the body of the second member penetrates all of the hole, and the bottom of the second member abuts the plate-like wall from which the hole is not formed from the rear side, Further, the body portion of the second member is expanded by electromagnetic forming and is in close contact with the inner peripheral surface of the hole formed in the plate-like wall. In the present invention, the front side means the direction in which the bottom of the second member faces, and the rear side means the direction in which the open side of the second member faces.

In this joined structure, the body portion of the second member is fixed to the plate-like wall in which the hole of the first member is formed, and the bottom of the second member is fixed to the plate-like wall in which the hole of the first member is not formed. The first member and the second member are firmly joined by contact. Further, since the hole is not formed in the plate-like wall on the front side of the first member, the strength of the first member is prevented from being reduced.
In the above bonded structure, the first to third members can have the following configurations, for example.
(1) The first member is formed of a shape having a plurality of plate-like walls and a plate-like connection wall connecting the plate-like walls in the front-rear direction. The profile has substantially the same cross section in the length direction and is manufactured by extrusion molding, rolling, bending of a plate material, or the like.
(2) As the second member, an integrated product formed by forging, deep drawing, or the like, a product obtained by welding the bottom to the end of the extruded pipe, a product having a cup-shaped member on the end of the extruded pipe, etc. are used. it can.
(3) The hole (hole through which the body of the second member penetrates) is not formed only in the plate-like wall on the foremost side of the first member, and the hole is formed in all other plate-like walls. Yes. In this case, since the bottom of the second member abuts on the foremost plate-like wall of the first member, the joining of both members is most stable.

(4) The body portion of the second member expanded by the electromagnetic forming is outside the hole before and after the hole (or the plate-like wall in which the hole is formed) formed in the plate-like wall of the second member. Expands in the radial direction. The portion extending in the outer diameter direction may be only in the vicinity of the hole, or may be a wider area along the length direction of the trunk (for example, the space between adjacent plate-like walls protrudes as a whole). Also good). By expanding the body part in the outer diameter direction in this manner, the adhesion between the body part and the inner peripheral surface of the hole is further strengthened, and at the same time, the movement of the second member in the length direction is reliably restrained.
(5) In the case of the above (4), the open end of the body part of the second member protrudes behind the plate wall on the most rear side of the first member, and the projecting part is expanded by the electromagnetic forming, A flange that abuts the plate-like wall from the rear side is formed at the open end of the part.
(6) In the case of (4) above, the barrel of the second member protrudes behind the plate-shaped wall on the most rear side of the first member, and the protruding portion is expanded by the electromagnetic forming so that the barrel is opened. A flange for joining to another member is formed at the end. When the first member is a bumper reinforcement of an automobile and the second member is a bumper stay, the joining flange is used for joining to the side member.
(7) The bottom of the second member and the plate-like wall of the first member with which it abuts are joined together. For example, mechanical joining such as bolt joining, welding joining, joining with an adhesive, and the like can be used. Thereby, joining of the 1st member and the 2nd member becomes stronger.

  A joined structure according to the present invention (Claim 8) is a metal first member having a plurality of plate-like walls arranged at a predetermined interval in the front and rear, a bottomed end with one end closed and the other end opened. A second member made of a cylindrical aluminum alloy, and a third member made of metal having one or a plurality of plate-like walls arranged at predetermined intervals in the front and rear, on the rear side of the first member A hole through which the body portion of the second member penetrates is formed in one or more plate-like walls, and the hole is not formed in the plate-like wall on the front side, and all the plate-like walls of the third member are formed. A hole through which the body part of the second member penetrates is formed, at least one plate-like wall of the third member abuts on the plate-like wall in which the hole of the first member is formed, and all of the plate-like wall of the first member It is located at a predetermined interval on the rear side of the plate-like wall where the hole is not formed, and the body of the second member is placed in all of the holes of the first member and the third member. And the bottom of the second member abuts from the rear side to a plate-like wall in which the hole of the first member is not formed, and the body of the second member is expanded by electromagnetic forming, It is closely attached to the inner peripheral surface of the hole formed in the plate-like wall of the third member.

In this joint structure, at least one of the plate-like walls of the third member is brought into contact with the plate-like wall in which the hole of the first member is formed by bringing the plate-like walls of both members into surface contact. This is to stabilize the joining of both members. Note that none of the plate-like walls of the third member is in contact with the plate-like wall of the first member where the hole is not formed, and is located at a predetermined interval on the rear side of the plate-like wall. .
In this joined structure, the body of the second member is fixed to the plate-like wall in which the holes of the first member and the third member are formed, and at that time, the holes of the second member and the third member are formed. The at least one plate-like wall is fixed by the second member in a state of being in contact with each other by surface contact, and the bottom of the second member is in contact with the plate-like wall in which the hole of the first member is not formed. Therefore, the first member and the third member are firmly joined.
In the joined structure, the first to third members can have, for example, the following configurations in addition to the configurations described in (1) to (3) and (7).
(8) The third member is made of a shape having a plurality of plate-like walls and a plate-like connection wall connecting them in the front-rear direction.
(9) The third member has a plurality of plate-like walls, and is disposed between the two plate-like walls in which the holes of the first member are formed. Side and the rearmost plate-like wall are in contact with each other. In this case, the joining of the first member and the third member is further stabilized.
(10) Before and after the hole formed in the plate-like wall of the first member and the third member (or the plate-like wall in which the hole is formed) of the second member expanded by the electromagnetic forming It extends in the outer diameter direction from the hole.
(11) In the case of (10) above, the open end of the body portion of the second member protrudes behind the plate wall on the rearmost side among the plate walls of the first member and the third member, and the protruding portion is the aforementioned A flange that is expanded by electromagnetic forming and is in contact with the plate-like wall from the rear side is formed at the open end of the body portion.
(12) In the case of (10), the body portion of the second member protrudes behind the plate wall on the rearmost side among the plate walls of the first member and the third member, and the protruding portion is formed by the electromagnetic molding. The pipe is expanded, and a flange for joining to another member is formed at the open end of the body portion.

  A joined structure according to the present invention (Claim 16) is a metal first member having a plurality of plate-like walls arranged at predetermined intervals in the front and rear, a bottom having a closed end and an open end. It consists of a cylindrical second member made of aluminum alloy and a metal third member having a plurality of plate-like walls arranged at predetermined intervals in the front and rear, and 1 or 2 on the rear side of the first member A hole through which the body portion of the second member penetrates is formed in the above plate-like wall, and the hole is not formed in the plate-like wall on the front side, and the plate-like wall on the most front side of the third member is excluded. Holes through which the body of the second member penetrates are formed in all the plate-like walls, and the plate-like wall on the foremost side of the third member is from the rear side to the plate-like wall on which the holes of the first member are not formed. Abutting, the body of the second member penetrates all of the holes of the first member and the third member, and the second member on the foremost plate wall of the third member The bottom is in contact from the rear side, and the body portion of the second member is expanded by electromagnetic forming, and is in close contact with the inner peripheral surface of the hole formed in the plate-like walls of the first member and the third member. Features.

In this joined structure, the body of the second member is fixed to the plate-like wall in which the holes of the first member and the third member are formed, and the third member is in contact with the bottom of the second member by surface contact; The first member abuts on a plate-like wall in which no hole is formed, whereby the first member and the third member are firmly joined. By not forming the hole in the foremost plate-like wall of the third member, strength reduction of the third member is prevented, and the plate-like wall is changed to a plate-like wall in which the hole of the first member is not formed. By abutting, the joining of the first member and the third member is stabilized.
In the joined structure, the first to third members can have, for example, the following configurations in addition to the configurations described in (1) to (3), (8), and (10) to (12).
(13) At least one of the plate-like walls in which the hole of the third member is formed is in contact with the plate-like wall of the first member in which the hole is formed. In this case, the joining of the first member and the third member is further stabilized.
(14) In the case of (13), the third member is disposed between the plate-like wall in which the hole is not formed in the first member and the plate-like wall in which the hole is formed, so that the hole is formed. The plate-like wall of the third member is in contact with the plate-like wall.
(15) The bottom of the second member, the plate-like wall of the third member with which it abuts, and the plate-like wall of the first member with which the plate-like wall abuts are joined together.

According to the present invention, two metal members having a plate-like wall and a metal member having a plate-like wall and a cylindrical body are joined using electromagnetic forming, or two metal members having a plate-like wall are used. In the joined structure joined by the cylindrical body, since the hole through which the second member penetrates is not formed at least on the frontmost plate-like wall, the strength of the first member is not significantly reduced, and at least the metal member One of the surfaces can be kept flat, and other members can be disposed in close contact with each other as necessary.
Further, the bottomed cylindrical second member is inserted into the hole formed in the plate-shaped wall of the first member (or the first member and the third member), and the body portion of the second member is expanded by electromagnetic forming to expand the tube. While fixing to a plate-shaped wall, since the bottom of the 2nd member is made to contact | abut to the plate-shaped wall in which the said hole is not formed, without reducing joint strength by this, a 1st member and a 2nd member ( Or the joining structure which consists of a 1st member, a 2nd member, and a 3rd member) can be obtained.

Hereinafter, the bonded structure according to the present invention will be specifically described with reference to FIGS.
The joined structure shown in FIGS. 1 and 2 is obtained by joining a first member 1 made of an aluminum alloy extruded material having a rectangular cross section and a second member 2 made of a bottomed cylindrical aluminum alloy. For example, if bumper reinforcement is used, the second member 2 is a bumper stay. The first member 1 includes front and rear plate-like walls 4 and 5 and plate-like connection walls 6 and 7 that connect them, and a circular shape in which the body portion 8 of the second member 2 penetrates the plate-like wall 5 on the rear side. Hole 11 is formed.
The second member 2 is obtained by expanding the body portion 13 of the tubular material 12 shown in FIG. 3A by electromagnetic forming. The cylindrical material 12 is integrally formed by impact forging, for example, and includes a body portion 13 having a uniform diameter and a closed bottom 14, and the outer diameter of the body portion 13 is slightly smaller than the inner diameter of the hole 11. The length of the body portion 13 is longer than the distance between the plate-like walls 4 and 5. Therefore, when the cylindrical material 12 is passed through the hole 11 of the first member 1 and the bottom 14 is brought into contact with the inner surface of the front plate-like wall 4, the body portion 13 is considerably rearward from the plate-like wall 5. It protrudes in length.

  The cylindrical material 12 is passed through the hole 11 of the first member 1 and the bottom 14 is brought into contact with the inner surface of the plate-like wall 4 on the front side. Thereafter, a part of the body portion 13 is surrounded by a mold 15 in accordance with a normal method. Then, the coil body 16 is inserted into the tubular material 12, an instantaneous large current is passed through the coil body 16, and the tubular material 12 is expanded. As for the 2nd member 2 obtained by this, the bottom 9 contact | abuts to the inner surface of the plate-shaped wall 4 of the front side, the trunk | drum 8 penetrates into the hole 11 formed in the plate-shaped wall 5, and the inner peripheral surface It closely adheres and expands in the outer diameter direction before and after the plate-like wall 5 (hole 11) (the overhang portions 8a and 8b are formed on the front and rear of the plate-like wall 5), and the open end further expands to form a flange. 8c is formed. The flange 8c is used as a flange for joining to another member (a side member if the second member 2 is a bumper stay).

The body portion 8 of the second member 2 is expanded in diameter and is in close contact with the inner peripheral surface of the hole 11 so that it is fixed to the plate-like wall 5, and at the same time, it expands in the outer diameter direction and moves in the axial direction. It is sealed and firmly fixed to the plate-like wall 5. In this way, the second member 2 has the body portion 8 fixed to the plate-like wall 5 on the rear side of the first member 1 at the portion of the hole 11 and the bottom 9 in surface contact with the plate-like wall 4 on the front side. Since they are in contact with each other, the first member 1 and the second member 2 are joined firmly and stably.
If necessary, by further forming a bolt hole in the plate-like wall 4 of the first member 1 and the bottom 9 of the second member 2 and bolting them together (the joint location is indicated by A), the joining becomes stronger. Become. It is also possible to bolt other members to the front surface of the plate-like wall 5 at the same time. The bolt holes opened in the plate-like wall 5 and the bottom 9 may be before or after electromagnetic forming. The method for joining the plate-like wall 5 of the first member 1 and the bottom 9 of the second member is not limited to bolt joining.

In the joint structure shown in FIG. 4, the first member 1 has a substantially square cross section, and includes front and rear plate-like walls 17 to 19 and plate-like connection walls 21 and 22 that connect them. A hole 20 through which the body portion 8 of the second member 2 penetrates is formed in the rearmost plate-like wall 19, and no hole is formed in the front plate-like wall 18 and the frontmost plate-like wall 17. The other points are the same as those of the joined structure shown in FIG. 1, and the same parts as those in FIG.
In the joint structure shown in FIG. 4, the bottom 9 of the second member 2 is in contact with the plate-like wall 18 by surface contact. However, if necessary for design, a hole through which the body portion 8 of the second member 2 penetrates is also formed in the plate-like wall 18, and the bottom 9 of the second member 2 is brought into contact with the plate-like wall 17 at the most front side. You can also touch. If there is a need for design, the first member having a larger number of plate-like walls, for example, having a substantially cross section can be used.

  In the joint structure shown in FIG. 5, the first member 1 has a C channel shape, and includes front and rear plate-like walls 23 and 24 and plate-like connection walls 25 that join them. The other points are the same as those of the joined structure shown in FIG. 1, and the same parts as those in FIG. The present invention can also be applied to the first member having no hollow cross section.

  FIGS. 3B and 3C are other examples of cylindrical materials that can be used in the present invention. A cylindrical material 26 shown in FIG. 3 (b) is formed by welding a circular plate to the end of a body portion 27 made of an extruded pipe to form a bottom 28. The cylindrical material shown in FIG. 3 (c). The material 29 is formed by covering a shallow cup-shaped member 33 that is forged or drawn on the end portion of the body portion 31 made of an extruded pipe to form the bottom 31. The tubular material 29 needs to have the tip of the body portion 31 abutted against the bottom of the cup-shaped member 33. The cup-shaped member 33 constitutes a part of the body portion 31 of the tubular material 29 and constitutes the bottom 31.

  In the joined structure shown in FIG. 6, the first member 1 has a substantially square cross section, and includes front and rear plate-like walls 34 to 36 and plate-like connection walls 37 and 38 that connect them. A hole 39 through which the body portion 8 of the second member 2 penetrates is formed in the plate-like wall 36 on the most rear side and the plate-like wall 35 on the front side thereof, and a hole is formed in the plate-like wall 34 on the most front side. Absent. The second member 2 is obtained by expanding the body portion 31 of the cylindrical material 29 shown in FIG. 3C by electromagnetic forming, and the cup-shaped member 33 is also expanded. The holes 39 formed in the plate-like walls 34 and 35 have the same diameter, and the outer diameter of the cup-shaped member 33 that is a part of the cylindrical material 29 is slightly smaller than the holes 39. The length of the cup-shaped member 33 is slightly larger than the interval between the plate-like walls 34 and 35.

The tubular material 29 is passed through the hole 39 of the first member 1, the bottom 32 is brought into contact with the inner surface of the frontmost plate-like wall 34, and thereafter, a part of the body 31 is surrounded by a mold 41 according to a standard method. The coil body 42 is inserted into the inside of the cylindrical material 26, an instantaneous large current is passed through the coil body 42, and the tubular material 29 is expanded. As for the 2nd member 2 obtained by this, the bottom 44 contact | abuts to the inner surface of the foremost plate-shaped wall 34 by surface contact, and the trunk | drum 43 penetrates into the hole 39 formed in the plate-shaped walls 35 and 36. And it adheres closely to the inner peripheral surface and expands in the outer diameter direction before and after the plate-like walls 35 and 36 (holes 39 and 39) (however, between the plate-like walls 34 and 35 and between the plate-like walls 35 and 36) 1 is different from the configuration of the second member described in FIG. 1 in that the body portion 43 protrudes in the outer diameter direction as a whole, and the open end is further expanded to form a flange 43a.
By this electromagnetic forming, the cup-shaped member 33 (see FIG. 3C) comes into close contact with the inner peripheral surface of the hole 39 formed in the plate-like wall 35, and the extruded pipe 31 (see FIG. 3C). ) Is in close contact with the inner peripheral surface of the cup-shaped member 33, and the extruded pipe 31 and the cup-shaped member 33 are projected in the outer diameter direction before and after the plate-like wall 35 at the same time. The cup-shaped member 33 and the extruded pipe 31 are also firmly joined.
If necessary, the plate-like wall 34 of the first member 1 and the bottom 44 of the second member 2 can be further bolted together. In this example, another member 40 indicated by an imaginary line is disposed in close contact with the front side of the plate-like wall 34 and is bolted together.

  In the joining structure shown in FIG. 7, the first member 1 has a C channel shape, and includes front and rear plate-like walls 45 and 46 and a plate-like connection wall 47 that joins them. Circular holes 51 through which the body portion 48 of the second member 2 penetrates are formed at appropriate intervals in the length direction. The second member 2 is obtained by expanding the body portion 13 of the tubular material 12 shown in FIG. 3A by electromagnetic forming. However, the cylindrical raw material 12 used for manufacturing the joined structure is such that the length of the body portion 13 is slightly longer than the distance between the plate-like walls 45 and 46, and the cylindrical raw material 12 is formed in the hole of the first member 1. 51, when the bottom 14 is brought into contact with the inner surface of the plate-like wall 45 on the front side, the body 13 protrudes only slightly from the plate-like wall 46 on the rear side to the rear side.

  This cylindrical material 12 is passed through each hole 51 of the first member 1 and the bottom 14 is brought into contact with the inner surface of the plate-like wall 45 on the front side. Thereafter, the coil body 52 is placed inside the cylindrical material 12 according to a conventional method. Inserted, a large current is passed through the coil body 52, and the tubular material 12 is expanded. In the second member 2 obtained in this manner, the bottom 49 comes into contact with the inner surface of the front plate-like wall 45 by surface contact, and the body portion 48 penetrates into the hole 51 formed in the plate-like wall 46 and includes the inside thereof. Adhering closely to the peripheral surface, it expands in the outer diameter direction before and after the plate-like wall 46 (hole 51) (however, the body portion 48 generally projects in the outer-diameter direction between the front and rear plate-like walls 45, 46) 48a), and the rear side of the plate-like wall 46 is different from the form of the second member shown in FIG. 1 in that the end on the open side of the body 48 is expanded to form a flange 48a). And the flange 48a contacts the plate-like wall 46 on the rear side from the rear side. The overhang portion 48a and the flange 48a reinforce the bonding between the body portion 48 of the second member 1 and the plate-like wall 46, like the overhang portions 8a and 8b of the second member in FIG.

Note that in this joined structure, the body portion 48 of the second member 2 protrudes in the entire outer diameter direction between the plate-like walls 45, 46, but the second member in the joined structure shown in FIG. Like the overhang portion 8a, only the vicinity of the plate wall 46 may overhang.
The joining structure shown in FIG. 7 is obtained by reinforcing the first member 1 with the second member 2, and the second member 2 has a body portion 48 with a hole 51 in the plate-like wall 46 on the rear side of the first member 1. Since the portion 49 is fixed and the bottom 49 is in contact with the plate-like wall 45 on the front side, the joining of the first member 1 and the second member 2 is strong and stable.

The joined structure shown in FIG. 8 includes a first member 1 made of a deformed C-channel aluminum alloy extruded material and a third member 3 made of an aluminum alloy extruded material having a day-shaped cross section. It joins with the 2nd member 2 which consists of.
The first member 1 is composed of front and rear plate-like walls 53 to 55 and plate-like connection walls 56 and 57 that connect them, and the second member 2 is arranged on the plate-like wall 55 and the middle plate-like wall 54 at the rearmost side. A circular hole 61 is formed through which the body portion 58 penetrates. The third member 3 includes front and rear plate-like walls 62 to 64 and plate-like connection walls 65 and 66 for connecting them, and a hole 67 having the same diameter as the hole 61 is formed in all the plate-like walls 62 to 64. Has been. The holes 61 and 67 are aligned in the front-rear direction. The length of the third member 3 in the front-rear direction is set to be substantially the same as the interval between the plate-like walls 54 and 55 of the first member, and is accommodated in the gap between the plate-like walls 54 and 55. The wall 54 (the foremost plate-like wall having the hole 61) and the plate-like wall 62 of the third member (the foremost plate-like wall having the hole 67) are in contact with each other by surface contact, and the first The plate-like wall 55 of the one member 1 (the rearmost plate-like wall with the hole 61 opened) and the plate-like wall 64 of the third member (the rearmost plate-like wall with the hole 67 opened) are in surface contact. In contact. As will be described next, the plate-like wall 62 and the plate-like wall 54 and the plate-like wall 64 and the plate-like wall 55 are joined to each other by the second member 2 expanded by electromagnetic forming.

The second member 2 is obtained by expanding the body portion 13 of the tubular material 12 shown in FIG. 3A by electromagnetic forming. Here, the length of the barrel portion 13 is slightly longer than the distance between the plate-like walls 53 and 55, and the tubular material 12 passes through the hole 61 of the first member 1 and the hole 67 of the third member, and the bottom 14 passes through the bottom 14. When being brought into contact with the inner surface of the frontmost plate-like wall 53 of the one member 1, the body portion 13 slightly protrudes rearward from the rearmost plate-like wall 55.
The tubular material 12 is passed through the hole 61 of the first member 1 and the hole 67 of the third member, and the bottom 14 is brought into contact with the inner surface of the plate-like wall 53 on the front side. A coil body (not shown) is inserted into the coil body, an instantaneous large current is passed through the coil body, and the tubular material 12 is expanded. In the second member 2 obtained in this manner, the bottom 59 comes into contact with the inner surface of the plate-like wall 53 on the front side of the first member 1 by surface contact, and the body portion 58 is a hole formed in the plate-like walls 54 and 55. 61 and the holes 67 formed in the plate-like walls 62 to 64 are in close contact with the inner peripheral surface thereof, and the plate-like walls 54 and 62 (holes 61 and 67), 63 (hole 67), 64 and 55 (holes). 61 and 67) expands in the outer diameter direction (between the plate-like walls 53 and 54, between the plate-like walls 62 and 63, and between the plate-like walls 63 and 64, and the whole body 58 is in the outer-diameter direction. The flange 58a is formed with the open end widened, and the flange 58a is a plate-like wall 55 on the rearmost side of the first member 1 (plate-like walls of the first member 1 and the third member 3). (A plate-like wall on the most rear side) from the rear side.

The joining structure shown in FIG. 9 has a substantially mouth-shaped cross section, and is composed of front and rear plate-like walls 68 and 69 and plate-like connection walls 71 and 72 connecting them. Unlike the joint structure shown, the other points are almost the same.
In the first member 1, a hole 75 through which the body portion 73 of the second member 2 passes is formed in the rear plate-like wall 69, and no hole is formed in the front plate-like wall 68. The third member 3 is the same as the third member shown in FIG. 8, and the plate-like wall 69 of the first member 1 and the plate-like wall 62 of the third member are in contact with each other by surface contact, and the second member is expanded by electromagnetic forming. 2 are joined together.

The second member 2 is obtained by expanding the body portion 13 of the tubular material 12 shown in FIG. 3A by electromagnetic forming. Here, in the cylindrical material 12, the length of the body portion 13 is slightly longer than the distance between the plate-like walls 68 and 64, the hole 67 of the third member 3 and the hole 75 of the first member 3 are passed, and the bottom 74 is passed through the bottom 74. When contacting the inner surface of the plate-like wall 68 on the front side of the one member 1, the trunk portion 13 slightly protrudes rearward from the plate-like wall 64 on the most rear side of the third member 3.
In the second member 2 obtained by expanding the tubular material 12 by electromagnetic forming, the bottom 74 abuts the inner surface of the plate-like wall 68 on the front side of the first member by surface contact, and the body portion 73 has a plate-like wall. It penetrates into the hole 67 formed in 62-64 and the hole 75 formed in the plate-shaped wall 69, and it adheres to the inner peripheral surface, and plate-shaped walls 69 and 62 (holes 75 and 67), 63 (hole 67) , 64 (hole 67) and expands in the outer diameter direction (between plate-like walls 68 and 69, between plate-like walls 62 and 63, and between plate-like walls 63 and 64) The flange 73a is formed by projecting in the radial direction, the open end is widened, and the flange 73a is a plate-like wall 64 (the first member 1 and the third member 3) on the rearmost side of the third member 3. Of the plate-like walls from the rear side.

The joining structure shown in FIG. 10 is obtained by joining a deformed C-channel first member 1 and a third member 3 having a mouth-shaped cross section with a bottomed cylindrical second member 2.
The first member 1 includes front and rear plate-like walls 76 to 78 and plate-like connection walls 79 and 81 that connect them, and the second member 2 is arranged on the plate-like wall 78 on the most rear side and the plate-like wall 79 in the middle. A circular hole 84 through which the body portion 82 penetrates is formed, and no hole is formed in the frontmost plate-like wall 76. The third member 3 includes front and rear plate-like walls 85 and 86 and plate-like connection walls 87 and 88 that connect them. Holes 89 having the same diameter as the hole 84 are formed in both plate-like walls 85 and 86. ing. The holes 84 and 89 are aligned in the front-rear direction. Similar to the joint structure described in FIG. 8, the plate-like wall 77 of the first member 1 and the plate-like wall 85 of the third member abut on each other in surface contact, and the plate-like wall 78 of the first member 1 and the third wall 1. The plate-like walls 86 of the members are brought into contact with each other by surface contact, and the plate-like wall 77 and the plate-like wall 85 and the plate-like wall 78 and the plate-like wall 86 are joined to each other by the second member 2 expanded by electromagnetic forming.

The second member 2 is obtained by expanding the body portion 31 of the cylindrical material 29 shown in FIG. 3C by electromagnetic forming, and the cup-shaped member 33 is also expanded. The outer diameter of the cup-shaped member 33 that is a part of the cylindrical material 29 is slightly smaller than the holes 84 and 89, and the length of the cup-shaped member 33 is slightly larger than the interval between the plate-shaped walls 76 and 77. Is formed.
In the second member 2 obtained by expanding the tubular material 29 by electromagnetic forming, the bottom 83 comes into contact with the inner surface of the frontmost plate-like wall 76 of the first member 1 by surface contact, and the body portion 82 is a plate. The plate-like walls 77 and 85 (holes 84 and 89) and 78 penetrate into the holes 84 formed in the wall-like walls 77 and 78 and the holes 89 formed in the plate-like walls 85 and 86 and are in close contact with the inner peripheral surface thereof. And 86 (holes 84 and 89) before and after expanding in the outer radial direction (between the plate-like walls 76 and 77 and between the plate-like walls 85 and 86, the body portion 82 generally projects in the outer radial direction, The open end is widened to form a flange 82a), and the flange 82a abuts against the rearmost plate-like wall 78 of the first member 1 from the rear side.

  By this electromagnetic forming, the cup-shaped member 33 (see FIG. 3C) is in close contact with the inner peripheral surface of the hole 84 formed in the plate-like wall 77 and the hole 89 formed in the plate-like wall 85, In addition, the extruded pipe 31 (see FIG. 3C) is in close contact with the inner peripheral surface of the cup-shaped member 33, and the extruded pipe 31 and the cup-shaped member 33 are simultaneously in the outer diameter direction before and after the plate-like walls 77 and 85. Therefore, the cup-shaped member 33 and the extruded pipe 31 constituting the tubular material 26 are also firmly joined.

The joined structure shown in FIG. 11 is obtained by joining a first member 1 made of a deformed C channel type aluminum alloy extruded material and a plate-like third member 3 with a bottomed cylindrical second member 2. .
The first member 1 includes front and rear plate-like walls 91, 92, a plate-like connection wall 93 connecting them, and a protrusion 94 having a low height formed on the connection wall 93, and a plate-like wall on the rear side. A circular hole 97 through which the body portion 95 of the second member 2 penetrates is formed in 92, and no hole is formed in the plate-like wall 91 on the front side. The third member 3 is composed of one plate-like wall 98, and a hole 99 having the same diameter as the hole 97 is formed in the plate-like wall 98, and is in surface contact with the plate-like wall 92 on the rear side of the first member 1. The plate-like wall 92 and the plate-like wall 98 are in contact with each other by the second member 2 expanded by electromagnetic forming.

The second member 2 is obtained by expanding the body portion 13 of the tubular material 12 shown in FIG. 3A by electromagnetic forming. In the second member 2 obtained by expanding the tubular material 12 by electromagnetic forming, the bottom 96 comes into contact with the inner surface of the plate-like wall 91 on the front side, and the body portion 95 is a plate-like shape of the first member 1. The hole 97 formed in the wall 92 and the hole 99 formed in the plate-like wall 98 of the second member 2 are penetrated and closely adhered to the inner peripheral surface thereof, so that the plate-like walls 92 and 98 (holes 97 and 99) are formed. It expands in the outer diameter direction at the front and rear (between the plate-like walls 91 and 98, the body portion 95 generally projects in the outer diameter direction, the open end is expanded, and a flange 95a is formed). The flange 95a abuts against the plate-like wall 92 on the rear side of the first member 1 from the rear side.
In the joined structure shown in FIG. 11, the end of the plate-like wall 98 is fitted between the plate-like wall 92 and the protrusion 94, thereby assisting the joining of the first member 1 and the third member 3. Yes.

The joined structure shown in FIG. 12 is obtained by joining the first member 1 and the third member made of a C channel-type aluminum alloy extruded material with the second member 2 made of a bottomed cylindrical aluminum alloy. .
The first member 1 includes front and rear plate-like walls 101 and 102 and a plate-like connection wall 103 that connects them, and a circular hole through which the body portion 104 of the second member 2 penetrates the plate-like wall 102 on the rear side. 106 is formed. The third member 3 is composed of front and rear plate-like walls 107 and 108 and a plate-like connection wall 109 that connects them, and a hole 111 having the same diameter as the hole 106 is formed in the plate-like wall 108 on the rear side. No hole is formed in the plate-like wall 107 on the side. The width of the third member 3 in the front-rear direction is set to be substantially the same as the interval between the plate-like walls 101 and 102 of the first member 1, and is accommodated in the gap between the plate-like walls 101 and 102. The wall 107 abuts on the plate-like wall 101 on the front side of the first member 1 by surface contact, and the plate-like wall 108 of the third member abuts on the plate-like wall 102 on the rear side of the first member 1 by surface contact. It touches. As will be described next, the plate-like wall 102 and the plate-like wall 108 are joined to each other by the second member 2 expanded by electromagnetic forming.

  The second member 2 is obtained by expanding the body portion 13 of the tubular material 12 shown in FIG. 3A by electromagnetic forming. Here, the outer diameter of the barrel portion 13 of the cylindrical material 12 is slightly smaller than the inner diameter of the holes 106 and 111, and the length of the barrel portion 13 is longer than the distance between the plate-like walls 101 and 102. Therefore, when the cylindrical material 12 is passed through the hole 106 of the first member 1 and the hole 111 of the third member, and the bottom 14 is brought into contact with the inner surface of the plate-like wall 107 on the front side of the third member, the body 13 Projecting from the plate-like wall 102 on the rear side of the first member to the rear side with a considerable length.

In the second member 2 obtained by expanding the tubular material 12 by electromagnetic forming, the bottom 105 comes into contact with the inner surface of the plate-like wall 107 on the front side of the third member 3 by surface contact, and the body portion 104 is plate-like. It penetrates into the hole 106 formed in the wall 102 and the hole 111 formed in the plate-like wall 108 and is in close contact with the inner peripheral surface thereof, and in the outer diameter direction before and after the plate-like walls 108 and 102 (holes 111 and 106). The flange 104c is formed by expanding (the overhang portions 104a and 104b are formed), and further opening the end on the open side. The flange 104c is used as a flange for joining to other members.
In the joint structure shown in FIG. 12, the plate-like wall 107 on the front side of the third member 3 abuts on the plate-like wall 101 on the front side of the first member 1, and the bottom 105 of the second member 2 further has a plate-like wall. Since the plate-like wall 102 and the plate-like wall 108 are joined to each other by the second member 2, the first member 1 and the third member 3 are firmly joined. If necessary, the plate-like wall 101 of the first member 1, the plate-like wall 107 of the third member 2, and the bottom 105 of the second member can be bolted.

It is sectional drawing of the junction structure concerning this invention. It is sectional drawing in a 90-degree different cross section of the joining structure. It is sectional drawing of the cylindrical raw material used for this invention. It is sectional drawing of another junction structure which concerns on this invention. It is sectional drawing of another junction structure which concerns on this invention. It is sectional drawing of another junction structure which concerns on this invention. It is sectional drawing of another junction structure which concerns on this invention. It is sectional drawing of another junction structure which concerns on this invention. It is sectional drawing of another junction structure which concerns on this invention. It is sectional drawing of another junction structure which concerns on this invention. It is sectional drawing of another junction structure which concerns on this invention. It is sectional drawing of another junction structure which concerns on this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 1st member 2 2nd member 3 3rd member 4,5,17-19,23,24,34-36,45,46,53,54,68,69,76-78,91,92,101, 102 Plate-like wall of the first member 8, 43, 58, 73, 82, 95, 104 Body portion of the second member 9, 44, 59, 74, 83, 96, 105 Bottom of the second member 11, 20, 39 , 51, 61, 75, 84, 97, 106 Holes 67, 89, 99, 111 formed in the first member 62-64, 85, 86, 98, 107, 108 Third hole formed in the second member Member plate wall

Claims (24)

A metal first member having a plurality of plate-like walls arranged at a predetermined interval in the front and rear, and a second member made of a bottomed cylindrical aluminum alloy with one end closed and the other end opened; A hole through which the body of the second member penetrates is formed in one or more plate-like walls on the rear side of the first member, and the hole is not formed in the plate-like wall on the front side, and the holes The body of the second member penetrates into all, and the bottom of the second member comes into contact with the plate-like wall from which the hole is not formed from the rear side, and the body of the second member is expanded by electromagnetic forming, A bonded structure characterized by being in close contact with an inner peripheral surface of the hole formed in the plate-like wall. The joining structure according to claim 1, wherein the first member is formed of a shape having a plurality of plate-like walls and plate-like connection walls that connect the plate-like walls in the front-rear direction. The joint structure according to claim 1 or 2, wherein the hole is not formed only in a plate-like wall on the foremost side of the first member. The joint structure according to any one of claims 1 to 3, wherein a body portion of the second member expanded by the electromagnetic forming is expanded in an outer diameter direction from the hole before and after the hole. . The open end of the body part of the second member protrudes behind the plate wall on the most rear side of the first member, the projecting portion is expanded by the electromagnetic forming, and the open end of the body part is behind the plate wall. The joint structure according to claim 4, wherein a flange abutting from the side is formed. The body portion of the second member protrudes behind the plate wall on the most rear side of the first member, the protruding portion is expanded by the electromagnetic forming, and a flange for joining to another member is formed at the open end of the body portion. The bonded structure according to claim 4, wherein the bonded structure is formed. The joint structure according to any one of claims 1 to 6, wherein the bottom of the second member and the plate-like wall with which the second member abuts are joined to each other. A metal first member having a plurality of plate-like walls arranged at predetermined intervals in the front and rear, a bottomed cylindrical aluminum alloy second member having one end closed and the other end opened, and one piece Or it consists of the metal 3rd member which has the some plate-shaped wall arrange | positioned at predetermined intervals back and forth, and the trunk | drum of a 2nd member is carried out to the 1 or 2 or more plate-shaped wall of the back side of a 1st member. A hole through which the body part penetrates is formed, the hole is not formed in the plate-like wall on the front side, and a hole through which the body part of the second member penetrates in all the plate-like walls of the third member; At least one plate-like wall of the third member contacts the plate-like wall of the first member in which the hole is formed, and the body of the second member penetrates all of the holes of the first member and the third member. In addition, the bottom of the second member comes into contact with the plate-like wall in which the hole of the first member is not formed from the rear side, and the body portion of the second member is electromagnetically molded. Ri is expanded pipe connection structure, characterized in that in close contact with the inner peripheral surface of the first member and the hole formed in a plate shape wall of the third member. 9. The joint structure according to claim 8, wherein the first member and the third member are formed of a shape having a plurality of plate-like walls and plate-like connection walls connecting the plate-like walls in the front-rear direction. The joint structure according to claim 8 or 9, wherein the hole is not formed only in a plate-like wall on the foremost side of the first member. The third member has a plurality of plate-like walls, and is disposed between the two plate-like walls in which the holes of the first member are formed. The joint structure according to claim 8, wherein the plate-like walls on the rear side are in contact with each other. The joint structure according to any one of claims 8 to 11, wherein a body portion of the second member expanded by the electromagnetic forming is expanded in an outer diameter direction from the hole before and after the hole. . The open end of the body portion of the second member protrudes behind the plate-like wall on the most rear side of the first member and the third member, the projecting portion is expanded by the electromagnetic forming, and the plate is formed at the open end of the body portion. The joint structure according to claim 12, wherein a flange that abuts from the rear side is formed on the shaped wall. The body part of the second member protrudes behind the plate wall on the most rear side of the first member and the third member, the projecting part is expanded by the electromagnetic forming, and is joined to another member at the open end of the body part. The joint structure according to claim 12, wherein a flange for use is formed. The joint structure according to any one of claims 8 to 14, wherein the bottom of the second member and the plate-like wall with which the second member abuts are joined to each other. A metal first member having a plurality of plate-like walls arranged at predetermined intervals in the front and rear, a bottomed cylindrical aluminum alloy second member in which one end is closed and the other end is opened, and front and rear It consists of a metal third member having a plurality of plate-like walls arranged at predetermined intervals, and the body of the second member penetrates into one or more plate-like walls on the rear side of the first member. The hole is formed in the plate-like wall on the front side, and the hole of the second member penetrates all the plate-like walls except the plate-like wall on the most front side of the third member. The plate-like wall on the foremost side of the third member abuts the plate-like wall of the first member on which the hole is not formed from the rear side, and the holes of the first member and the third member The body of the second member penetrates all, and the bottom of the second member comes into contact with the plate-like wall on the most front side of the third member from the rear side. Part is expanded pipe by electromagnetic forming, joining structure characterized by being in close contact with the inner peripheral surface of the hole formed in the plate-like wall of the first member and the third member. The joining structure according to claim 16, wherein the first member and the third member are formed of a shape having a plurality of plate-like walls and a plate-like connection wall connecting them in the front-rear direction. 18. The joint structure according to claim 16, wherein the hole is not formed only in the frontmost plate-like wall of the first member. The at least one plate-like wall in which the hole of the third member is formed is in contact with the plate-like wall in which the hole of the first member is formed. The joint structure described in 1. The third member is disposed between the plate-like wall in which the hole of the first member is not formed and the plate-like wall in which the hole is formed, and the plate-like shape of the third member is formed on the plate-like wall in which the hole is formed. The joining structure according to claim 19, wherein the walls are in contact with each other. The joint structure according to any one of claims 16 to 20, wherein a body portion of the second member expanded by the electromagnetic forming is expanded in an outer diameter direction from the hole before and after the hole. . The open end of the body portion of the second member protrudes behind the plate-like wall on the most rear side of the first member and the third member, the projecting portion is expanded by the electromagnetic forming, and the plate is formed at the open end of the body portion. The joint structure according to claim 21, wherein a flange that abuts from the rear side is formed on the shaped wall. The body part of the second member protrudes behind the plate wall on the most rear side of the first member and the third member, the projecting part is expanded by the electromagnetic forming, and is joined to another member at the open end of the body part. The joint structure according to claim 21, wherein a flange for use is formed. 24. The bottom of the second member, the plate-like wall of the third member with which the second member abuts, and the plate-like wall of the first member with which the plate-like wall abuts are joined to each other. A bonded structure according to any one of the above.

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