JP2005199743A - Car body structure and manufacturing method thereof - Google Patents

Abstract

An object of the present invention is to provide a vehicle body structure capable of reducing the number of man-hours and processes for applying an adhesive when joining three members, and a method for manufacturing the same.
A vehicle body structure includes a panel member having a cross-sectional hat shape, a panel member having a flat plate shape, and an intermediate plate member having a flat plate shape. A plurality of long holes 28 are formed in the flange portions 15 </ b> A on both sides of the intermediate plate material 15. For this reason, if the adhesive 26 is applied to the flange portion 24 of the other panel member 14 and then the one panel member 12 and the intermediate panel member 15 are pressed against the other panel member 14, the adhesive 26 becomes a long hole 28. Flows into the flange portion 18 side of one panel member 12 and penetrates. Therefore, the adhesive application man-hours and processes are halved.
[Selection] Figure 1

Description

  The present invention provides an adhesive for a flange portion of one member, a flange portion of the other member, and a flange portion of an intermediate member disposed between the flange portion of one member and the flange portion of the other member. The present invention relates to a vehicle body structure to be joined by the above method and a method for manufacturing the same.

  Generally, a vehicle body structure such as a front side member, a rear side member, or a rocker is disposed with the longitudinal direction of the vehicle as a longitudinal direction, and receives an axial compression load at the time of a collision. For this reason, these vehicle body structures are required to have sufficient rigidity against the axial compression load. Therefore, usually, the outer panel and the inner panel, each having a substantially hat-shaped cross section, face each other to form a closed cross-sectional structure, and both flange portions are often joined by spot welding.

  By the way, since the adhesive agent which can respond to a required characteristic has been developed recently, it replaces with the flange joint by conventional spot welding, and the flange joint by an adhesive agent has been employ | adopted. As a prior art that employs flange joining using this type of adhesive, there is a technique disclosed in Patent Document 1 below, which will be briefly described below with reference to the drawings.

As shown in FIG. 4, the vehicle body structure 100 includes a pair of panels 102 and 104 each having a substantially hat-shaped cross section. Each panel 102,104 is comprised by main-body part 102A, 104A of U-shaped cross section, and right and left flange part 102B, 104B. The left and right flange portions 102B and 104B are formed in a corrugated shape, and are joined by an adhesive 106 in a state in which both flange portions 102B and 104B are overlapped. In addition, intensity changing portions 108 and 110 are set in the main body portions 102A and 104A of the pair of panels 102 and 104 with the phases shifted in the longitudinal direction.
JP-A-9-95257

  Here, the vehicle body structure 100 having the above-described configuration is configured by only the pair of panels 102 and 104. However, some of the vehicle body structures are provided with reinforcements therein. In this case, the flange portion is joined in a three-layered state. For this purpose, the adhesive is uniformly applied to the front and back surfaces of the flange portion of the reinforcement or the joint surfaces of the flange portions 102B and 104B of the panels 102 and 104. There is a problem that the number of coating steps and processes increases.

  In view of the above facts, an object of the present invention is to provide a vehicle body structure and a method for manufacturing the same that can reduce the number of steps and processes for applying an adhesive when joining three members.

  The vehicle body structure according to the first aspect of the present invention includes a flange portion of one member, a flange portion of the other member, and an intermediate portion disposed between the flange portion of one member and the flange portion of the other member. A vehicle body structure for joining three members of a flange portion of a member with an adhesive, wherein a through hole for allowing the adhesive to circulate is provided in the flange portion of the intermediate member.

  A vehicle body structure according to a second aspect of the present invention is the vehicle body structure according to the first aspect of the present invention, wherein at least one of the flange portion of the one member and the flange portion of the intermediate member avoids the through hole. A plurality of convex portions for forming a gap between the flange portion of the member and the flange portion of the intermediate member are provided.

  According to a third aspect of the present invention, there is provided a method of manufacturing a vehicle body structure including a flange portion of one member, a flange portion of the other member, and a flange portion of one member and a flange portion of the other member. A method of manufacturing a vehicle body structure in which three of the flange portions of an intermediate member to be joined are joined by an adhesive, wherein an adhesive is applied to the joint surface of the flange portion of the other member, and the adhesive A flange that joins three flange portions by pressing the flange portion of the intermediate member and the flange portion of the one member against the joining surface of the flange portion of the other member formed with a through hole for circulating And a partial bonding step.

  According to the first aspect of the present invention, the vehicle body structure is disposed between the flange portion of one member, the flange portion of the other member, and the flange portion of one member and the flange portion of the other member. It is comprised by joining three of the flange parts of the intermediate member to be bonded with an adhesive.

  Here, in the present invention, since the through hole for circulating the adhesive is provided in the flange portion of the intermediate member, the adhesive should be applied only to either the flange portion of one member or the flange portion of the other member. For example, the three flange portions can be joined.

  For example, after the adhesive is applied to the joint surface of the flange portion of the other member, the flange portion of the intermediate member and the flange portion of the one member are overlapped, and the flange portion of the other member to which the adhesive is applied When pressed against the joint surface, the adhesive applied to the flange portion of the other member flows through the through hole between the flange portion of the one member and the flange portion of the intermediate member, and diffuses and penetrates. . As a result, the three members can be bonded and joined at once.

  According to the second aspect of the present invention, between the flange portion of one member and the flange portion of the intermediate member at a position avoiding the through hole in at least one of the flange portion of the one member and the flange portion of the intermediate member. Since a plurality of convex portions for forming a gap are provided in the three-membered structure, a gap is formed between the flange portion of one member and the flange portion of the intermediate member in a state where the three members are assembled. For this reason, it becomes easy for the adhesive agent which passed through the through-hole to flow in between the flange part of one member, and the flange part of an intermediate member.

  According to the third aspect of the present invention, first, an adhesive is applied to the joint surface of the flange portion of the other member in the adhesive application step. Next, in the flange part joining step, the flange part of the intermediate member and the flange part of one member are pressed against the joint surface of the flange part of the other member to which the adhesive has already been applied. Since the through hole for circulating the adhesive is formed in the flange part of the intermediate member, the adhesive applied to the flange part of the other member passes through the through hole of the intermediate member and the flange part of one member It goes around and spreads and penetrates. As a result, the adhesive spreads between the flange portion of one member and the flange portion of the intermediate member, and between the flange portion of the intermediate member and the flange portion of the other member, and the three flange portions are joined. That is, according to the present invention, it is only necessary to apply the adhesive application process / process once to join the three members of the one member, the other member, and the intermediate member.

  As described above, the vehicle body structure according to the first aspect of the present invention has the through hole for allowing the adhesive to flow through the flange portion of the intermediate member, so that the flange portion of one member and the other member If the adhesive is applied only to one of the flange parts, it is possible to join the three flange parts. As a result, it is possible to reduce the man-hours and processes for applying the adhesive when joining three members. It has an excellent effect of being able to.

  A vehicle body structure according to a second aspect of the present invention is the vehicle body structure according to the first aspect of the present invention, wherein at least one of the flange portion of one member and the flange portion of the intermediate member avoids a through hole. Since a plurality of convex portions for forming gaps are provided between the flange portion and the flange portion of the intermediate member, the adhesive that has passed through the through hole is formed between the flange portion of one member and the flange portion of the intermediate member. As a result, the adhesive bonding time can be shortened and the uniformity of the bonding strength by the adhesive can be improved.

  In the method of manufacturing the vehicle body structure according to the third aspect of the present invention, an adhesive application step for applying an adhesive to the joint surface of the flange portion of the other member and a through hole for distributing the adhesive are formed. And the flange part joining step of joining the three flange parts by pressing the flange part of the intermediate member and the flange part of one member against the joining surface of the flange part of the other member. As a result, the number of man-hours and processes can be reduced to one time. As a result, when three members are joined, the number of man-hours and processes for applying the adhesive can be reduced.

  Hereinafter, an embodiment of a vehicle body structure according to the present invention will be described with reference to FIGS.

  FIG. 1 is an exploded perspective view of a vehicle body structure 10 according to the present embodiment. FIG. 2 is a perspective view showing the assembled state of the vehicle body structure 10. As shown in these drawings, the vehicle body structure 10 is configured such that one panel member 12 and the other panel member 14 each having a substantially hat-shaped cross section face each other, and one panel member 12 and the other panel member 14 face each other. The intermediate panel member 15 as a flat intermediate member is interposed between the panel member 14 and the three members, which are joined by an adhesive 26 to be described later. The longitudinal direction of the vehicle is the longitudinal direction of the vehicle. It is used as a vehicle skeleton member (for example, various side members, rockers, and reinforcements arranged as necessary). In addition, the one panel material 12, the other panel material 14, and the intermediate panel material 15 are comprised by the press-molded product of the steel plate.

  One panel member 12 as one member includes a panel body 16 having a U-shaped cross section, and a pair of left and right flange portions formed by bending the open end of the panel body 16 outward. 18. Each flange portion 18 is formed linearly along the longitudinal direction of the panel body 16. Each flange portion 18 is integrally formed with a plurality of convex portions 18B protruding toward the intermediate panel member 15 with respect to the general portion 18A at a predetermined interval.

  The other panel member 14 as the other member includes a panel main body 22 having a U-shaped cross section, and a pair of left and right flange portions formed by bending the open end of the panel main body 22 outward. 24. Each flange portion 24 is formed linearly along the longitudinal direction of the panel body 22. An adhesive 26 is applied to the upper surfaces (joint surfaces) of these flange portions 24.

  Further, the intermediate panel material 15 sandwiched between the one panel material 12 and the other panel material 14 is formed in a rectangular flat plate shape, and the flange portions 15A on both sides serve as through holes at predetermined intervals. A plurality of long holes 28 are formed. The long holes 28 are arranged so as not to overlap with the plurality of convex portions 18 </ b> B formed in the flange portion 18 of one panel material 12. More specifically, the dimension is set so that the long hole 28 is located in the intermediate portion in the longitudinal direction of the general portion 18A of the flange portion 18.

  Next, the operation and effect of this embodiment will be described.

  First, a method for manufacturing the vehicle body structure 10 according to the present embodiment will be described.

  First, in the adhesive application process, the adhesive 26 is applied to the upper surface (joint surface) of each flange portion 24 of the other panel member 14. Next, in the flange portion joining step, the flange portion 15A on both sides of the intermediate panel material 15 and the flange portion 18 of one panel material 12 are connected to the flange portion 24 of the other member 14 to which the adhesive 26 has already been applied. Pressed against the top surface.

  Here, in this embodiment, since the long hole 28 for circulating the adhesive 26 is formed in the flange portion 15 </ b> A of the intermediate panel material 15, the adhesive applied to the flange portion 24 of the other panel material 14. 26 passes through the long hole 28 formed in the flange portion 15A of the intermediate panel material 15 and goes to the lower surface (joint surface) side of the flange portion 18 of one panel material 12, and diffuses and penetrates (arrow in FIG. 3). A shows how the adhesive 26 flows in). Thereby, between the lower surface of the flange part 18 of one panel material 12 and the upper surface (joint surface) of the flange part 15A of the intermediate panel material 15, and the lower surface (joint surface) of the flange part 15A of the intermediate panel material 15 and the other. The adhesive 26 spreads between the upper surface of the flange portion 24 of the panel 14 material, and the three flange portions 15A, 18 and 24 are joined to each other. Thereby, the vehicle body structure 10 is manufactured.

  In the above-described manufacturing procedure, the adhesive 26 is applied to the upper surface of the flange portion 24 of the other panel member 14 disposed on the lower side. 12 is turned upside down, the other panel member 14 of the ridge disposed on the lower side is turned upside down and held, and an adhesive 26 is applied to the lower surface of the flange portion 24 of the other panel member 14. You may make it do. In this case, since the adhesive 26 tends to sag due to its own weight, there is an advantage that the adhesive 26 easily flows.

  As described above, in the vehicle body structure 10 according to the present embodiment, a plurality of long holes 28 are formed in the flange portions 15A on both sides of the intermediate panel material 15, and the adhesive applied to the flange portion 24 of the other panel material 14 is formed. 26 is introduced into the flange portion 18 side of the one panel member 12 through the long hole 28 so as to diffuse and penetrate, so that either the flange portion 18 of the one panel member 12 or the flange portion 24 of the other panel member 14 is selected. If the adhesive 26 is applied only to the three members, the three members can be bonded together at a stroke. As a result, according to the vehicle body structure 10 according to the present embodiment, it is possible to reduce the number of man-hours and processes for applying the adhesive 26 when joining three members. If the number of steps and processes for applying the adhesive 26 can be reduced, the production efficiency of the vehicle body structure 10 and the vehicle can be increased, and the cost can be reduced.

  Further, in the vehicle body structure 10 according to the present embodiment, since the convex portion 18B that protrudes toward the intermediate panel material 15 at a predetermined interval is formed on the flange portion 18 of one panel material 12, the three members are assembled. Then, the convex portion 18B of the flange portion 18 of one panel member 12 is in close contact with the upper surface of the flange portion 15A of the intermediate panel member 15, and a predetermined gap 30 (between the general portion 18A and the upper surface of the flange portion 15A). 2 and 3) are formed. For this reason, the adhesive 26 that has passed through the long hole 28 easily flows between the flange portion 18 of the one panel member 12 and the flange portion 15A of the intermediate panel member 15. As a result, according to the present embodiment, the time required for adhesive bonding can be shortened and the uniformity of the bonding strength by the adhesive 26 can be improved.

  Furthermore, according to the manufacturing method of the vehicle body structure 10 according to the present embodiment, as described above, the adhesive application for joining the three members of the one panel member 12, the other panel member 14, and the intermediate panel member 15 is performed. Only one man-hour / process is required. As a result, according to the present embodiment, it is possible to reduce the number of man-hours and processes for applying the adhesive 26 when joining three members.

  In the above-described embodiment, one panel member 12, the other panel member 14 and the intermediate panel member 15 are press-formed products of steel plates. However, the present invention is not limited to this, and one or more members are made of an aluminum alloy or the like. The light metal material may be used.

  In the present embodiment described above, both sides of the intermediate panel material 15 are used as they are as the flange portion 15A. However, the present invention is not limited to this, and a strip-like flange portion is integrally formed on both sides when the intermediate member is press-molded. May be.

  Furthermore, in the above-described embodiment, the configuration in which the convex portions 18B are formed at predetermined intervals on the flange portion 18 of the one panel material 12 is not limited to this, but is long on both sides of the intermediate panel material 15. You may provide the convex part which protrudes in the side of one panel material in the form which avoids the hole 28. FIG. In this case, since the one panel material 12 and the other panel material 14 can be made into the same cross-sectional shape, there exists a merit which can share a member. Incidentally, as a combination, it is also possible to alternately provide convex portions on both the flange portion 18 of one panel member 12 and the flange portion 15A of the intermediate panel member 15.

  Moreover, in this embodiment mentioned above, although the structure which forms the convex-shaped part 18B in the flange part 18 of one panel material 12 was taken, in this invention of Claim 1 and Claim 3, the convex-shaped part 18B is taken. Is included, and the flange portion 18 is configured only by the general portion 18A.

  Further, in the above-described embodiment, the long hole 28 is used as the through hole. More specifically, for example, by devising the cross-sectional shape of the through-hole by changing the cross-sectional shape of the long hole 28 to a drum shape or a tapered shape, adhesion by pressing the one panel material 12 and the intermediate panel material 15 is performed. The nozzle effect is obtained when the agent 26 flows in (sucks up), and the adhesive supply performance (supply speed, uniformity, etc.) to the other panel member 14 is improved.

It is a disassembled perspective view of the vehicle body structure which concerns on this embodiment. It is a perspective view of the assembly | attachment state of the vehicle body structure shown by FIG. FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. It is a perspective view which shows the vehicle body structure which concerns on a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Car body structure 12 One panel material 14 The other panel material 15 Intermediate panel material (intermediate member)
15A Flange 18 Flange 18A Convex 24 Flange 26 Adhesive 28 Long hole (through hole)
30 gap

Claims (3)

A vehicle body that joins the flange part of one member, the flange part of the other member, and the flange part of the intermediate member arranged between the flange part of one member and the flange part of the other member with an adhesive. A structure,
Provided a through-hole for circulating the adhesive in the flange portion of the intermediate member,
A vehicle body structure characterized by that. Plural for forming a gap between the flange portion of one member and the flange portion of the intermediate member at a position avoiding the through hole in at least one of the flange portion of the one member and the flange portion of the intermediate member The convex part of
The vehicle body structure according to claim 1. A vehicle body that joins the flange part of one member, the flange part of the other member, and the flange part of the intermediate member arranged between the flange part of one member and the flange part of the other member with an adhesive. A method of manufacturing a structure,
An adhesive application step of applying an adhesive to the joint surface of the flange portion of the other member;
The flange portion of the intermediate member and the flange portion of the one member formed with a through-hole for circulating an adhesive are pressed against the joint surface of the flange portion of the other member to join the three flange portions. Flange part joining process to perform,
A method for manufacturing a vehicle body structure characterized by comprising:

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