JP2009274693A - Reinforcing structure of vehicle skeleton member - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a reinforcing structure of a vehicle skeleton member capable of preventing or suppressing a foam material foamed in a closed section structure from leaking out of a hole section. <P>SOLUTION: A second foam adhesive agent 32 presses a seal member 30 to the second panel 16 side by foaming and joins the seal member 30 to a reinforcing member 26 in the foamed state. Around a mounting hole 16A, the opening side end 30D of the seal member 30 is fitted to a second panel 16, and the sealability thereof is improved and the intrusion of a first foam adhesive agent 28 into the mounting hole 16A is interrupted. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a vehicle skeleton member reinforcing structure in which a reinforcing member is disposed inside a vehicle skeleton member having a closed cross-sectional structure.

There is a structure in which a foamable material is disposed in a hollow chamber of a hollow structure (see, for example, Patent Document 1). In such a structure, for example, a locking clip protruding from one side surface of the foamable material is fitted in a mounting hole provided in the hollow structure.
JP 2001-146176 A

  However, in this structure, the foamable material foamed in the hollow chamber may leak from the mounting hole.

  In view of the above fact, an object of the present invention is to obtain a reinforcing structure for a vehicle skeleton member that can prevent or suppress the foamable material foamed in the closed cross-sectional structure from leaking from the hole.

  According to a first aspect of the present invention, there is provided a reinforcing structure for a vehicle skeleton member, wherein the reinforcing member is disposed inside a vehicle skeleton member having a closed cross-sectional structure including a plate portion having a hole, the reinforcing member, and the reinforcing member. A first foamed adhesive disposed between the vehicle frame member and bonded to the vehicle frame member in a foamed state; and a concave portion disposed inside the vehicle frame member and having an opening formed therein. A blocking means for blocking an intrusion path of the first foamed adhesive material into the hole in a state where an end on the opening side is in contact with the plate around the hole, the reinforcing member, and And a second foamed adhesive material that is disposed between the blocking means and presses the blocking means toward the plate portion by foaming, and binds the blocking means to the reinforcing member in a foamed state.

  According to the reinforcing structure for a vehicle skeleton member of the present invention described in claim 1, the reinforcing member disposed inside the vehicle skeleton member having a closed cross-sectional structure is made into the vehicle skeleton member by the foamed first foam adhesive. Since they are coupled, the vehicle skeleton member is reinforced by a reinforcing member coupled to the inside thereof. For example, when a load is applied, deformation of the closed cross section is prevented or suppressed. Here, when the second foaming adhesive foams, the blocking means is pressed to the plate portion side, and the blocking means is coupled to the reinforcing member in a foamed state, and the end of the blocking means on the opening side is the vehicle skeleton. Since the passage of the first foamed adhesive material into the hole is blocked in contact with the periphery of the hole in the plate portion of the member, the end portion on the opening side of the blocking means and the plate portion are around the hole. Adhesion improves sealability, and intrusion of the first foamed adhesive into the hole is blocked.

  According to a second aspect of the present invention, there is provided the reinforcing structure for a vehicle skeleton member according to the first aspect, wherein the second foamed adhesive is at a lower temperature or a faster foaming speed than the first foamed adhesive. It has the property of foaming and curing.

  According to the reinforcing structure for a vehicle skeleton member of the present invention described in claim 2, the second foamed adhesive material has a property of being foamed and cured at a low temperature or at a faster foaming speed than the first foamed adhesive material. Therefore, at the time of manufacture, the second foamed adhesive can be foamed before the first foamed adhesive is foamed. Here, by foaming the second foamed adhesive prior to the first foamed adhesive, first, the end on the opening side of the blocking means is pressed to the plate part side to improve the sealing performance. Since the foamed adhesive is cured, the penetration of the first foamed adhesive into the hole is more effectively blocked.

  According to a third aspect of the present invention, there is provided a reinforcing structure for a vehicle frame member according to the present invention, wherein the reinforcing member is disposed inside a vehicle frame member having a closed cross-sectional structure including a plate portion having a hole, the reinforcing member, and the reinforcing member. A first foam adhesive disposed between the vehicle skeleton member and connected to the vehicle skeleton member in a foamed state; and the first foam between the reinforcement member and the vehicle skeleton member; It is arranged closer to the hole than the adhesive, and in the foamed state, the reinforcing member is coupled to the periphery of the hole in the plate portion, and the entry path of the first foamed adhesive to the hole is blocked. A second foam adhesive.

  According to the vehicle skeleton member reinforcing structure of the present invention described in claim 3, the vehicle skeleton member having a closed cross-sectional structure has a hole formed in the plate portion, and the reinforcing member disposed inside the vehicle skeleton member is Since the vehicle skeleton member is coupled to the vehicle skeleton member by the first foamed adhesive material in a foamed state, the vehicle skeleton member is reinforced by a reinforcement member coupled to the inside thereof. Deformation is prevented or suppressed. Here, the second foaming adhesive is disposed between the reinforcing member and the vehicle frame member and closer to the hole than the first foaming adhesive, and the second foaming adhesive is reinforced in a foamed state. Since the member is coupled to the periphery of the hole portion in the plate portion and the intrusion path of the first foamed adhesive material into the hole portion is blocked, the intrusion of the first foamed adhesive material into the hole portion is blocked.

  As described above, according to the reinforcing structure for a vehicle skeleton member according to claim 1 of the present invention, the foamed first foamed adhesive material (foamable material) leaks from the hole in the closed cross-sectional structure. It has an excellent effect that it can be prevented or suppressed.

  According to the reinforcing structure for a vehicle skeleton member according to claim 2, it is possible to more effectively prevent or suppress leakage of the first foamed adhesive material (foamable material) foamed in the closed cross-sectional structure from the hole. It has an excellent effect of being able to.

  According to the reinforcing structure for a vehicle skeleton member according to claim 3, it is possible to prevent or suppress the first foamed adhesive material (foamable material) foamed in the closed cross-sectional structure from leaking from the hole portion with a simple configuration. It has an excellent effect of being able to.

[First Embodiment]
A vehicle frame member reinforcing structure 10 according to a first embodiment of the present invention will be described with reference to FIGS. 1 and 2. The vehicle skeleton member is a member that constitutes the framework of the vehicle (vehicle body) and includes, for example, a front side member, a pillar, and the like.

  FIG. 1 is a cross-sectional view showing the overall configuration of a vehicle frame member reinforcing structure 10. As shown in this figure, the vehicle frame member reinforcing structure 10 has a structure in which a reinforcing member 26 is bonded to the inside of a vehicle frame member 12 having a closed cross-sectional structure. This will be specifically described below.

  The vehicle skeleton member 12 includes a first panel 14 formed of a metal plate (for example, a steel plate or the like) and having a cross-sectional hat shape. A second panel 16 as a flat plate portion constituting a part of the vehicle skeleton member 12 is joined to the flange 14A of the first panel 14 by welding. Thereby, a closed section 18 is formed by the first panel 14 and the second panel 16. The second panel 16 is made of a metal plate (for example, a steel plate or the like), and an attachment hole 16A as a hole is formed therethrough. In addition, although illustration is abbreviate | omitted, the vehicle frame member 12 makes the orthogonal direction with the cross section shown in FIG. 1 the longitudinal direction.

  A weld nut 20 (fastening means) is welded to the second panel 16 in advance on the outer peripheral portion of the mounting hole 16A with an inward surface 16B directed to the inside of the closed section 18. Further, from the outward facing surface 16C (surface opposite to the inward facing surface 16B) side of the second panel 16, the bolt 22 (fastening means) passes through the bracket 24 (fastened member) and is inserted into the mounting hole 16A. Has been. The bolt 22 is screwed into the weld nut 20, thereby tightening the bracket 24. That is, the bracket 24 is fastened to the vehicle skeleton member 12 by the weld nut 20 and the bolt 22.

  A reinforcing member 26 is disposed inside the vehicle skeleton member 12 having a closed cross-sectional structure. The reinforcing member 26 is formed in a block shape, and is disposed so as to include a portion facing a portion where the bracket 24 is fastened. The reinforcing member 26 is made of resin in order to reduce the weight. The outer peripheral surface 26B of the reinforcing member 26 is located in the vicinity of the inner surface of the vehicle skeleton member 12 (the surface facing the inside of the closed cross section 18) in the cross section shown in FIG. A first foaming adhesive 28 (first foaming adhesive, main foaming adhesive) is disposed between them. The first foamed adhesive 28 is configured to include a foamable material, and the entire area of the outer peripheral surface 26B of the reinforcing member 26 is bonded to the vehicle skeleton member 12 in a foamed state. Thereby, even if the vehicle skeleton member 12 receives a load, the deformation of the closed cross section 18 is prevented or suppressed.

  The reinforcing member 26 is formed with a recess 26A that opens toward the mounting hole 16A. A seal member 30 serving as a blocking means (made of resin in this embodiment) having a predetermined rigidity is disposed in the recess 26A. The seal member 30 includes a top wall portion 30A and a cylindrical peripheral wall portion 30B continuous from the peripheral end portion of the top wall portion 30A. As a whole, the seal member 30 includes a concave portion 30C in which an opening is formed. It has a bottomed cylindrical shape with the second panel 16 side open.

  The end 30D on the opening side of the seal member 30 is configured to block the intrusion path of the first foamed adhesive 28 into the mounting hole 16A in a state of being in contact with the second panel 16 around the mounting hole 16A ( Setting of seal part). The peripheral wall portion 30 </ b> B of the seal member 30 is in surface contact with the inner peripheral wall surface 126 </ b> A of the concave portion 26 </ b> A of the reinforcing member 26. Further, the top wall portion 30 </ b> A of the seal member 30 is disposed to face the bottom surface 226 </ b> A of the recess 26 </ b> A of the reinforcing member 26.

  A second foamed adhesive 32 (second foamed adhesive) is disposed between the bottom surface 226A of the recess 26A of the reinforcing member 26 and the top wall portion 30A of the seal member 30. The second foaming adhesive 32 is configured to include a foamable material, and has a property of foaming and curing at a low temperature as compared with the first foaming adhesive 28, and the second sealing member 30 is formed by foaming. The seal member 30 is coupled to the reinforcing member 26 while being pressed toward the panel 16 and foamed.

(Changes in state and actions / effects during bonding)
Next, the state change of the first foamed adhesive 28 and the second foamed adhesive 32 when the reinforcing member 26 and the like are bonded, and the operation and effect of this embodiment will be described with reference to FIG.

  FIG. 2A shows an application state before the first foamed adhesive 28 and the second foamed adhesive 32 are foamed (before being heated). As shown in FIG. 2A, the reinforcing member 26 is coated with the first foam adhesive 28 on the outer peripheral surface 26B, the surface of the coating layer of the first foam adhesive 28 and the inner surface of the vehicle skeleton member 12; A predetermined interval is provided between the two. The reinforcing member 26 is coated with a second foam adhesive 32 on the bottom surface 226A of the recess 26A, and between the surface of the coating layer of the second foam adhesive 32 and the top wall 30A of the seal member 30, A predetermined interval is provided.

  The seal member 30 is fitted in the recess 26A of the reinforcing member 26, and an end 30D on the opening side of the seal member 30 is formed on the inward surface 16B of the second panel 16 around the mounting hole 16A of the vehicle skeleton member 12. It is in a state of contact. In this state, the entry path of the first foamed adhesive 28 into the mounting hole 16 </ b> A is blocked by the seal member 30. Further, the reinforcing member 26 and the sealing member 30 are set so as not to move relative to each other before the second foaming adhesive material 32 is foamed. In a state where 30A receives a load from the second foamed adhesive material 32, the relative movement is set.

  Next, when heated from the outside of the vehicle skeleton member 12 in the state of FIG. 2 (A), as shown in FIG. 2 (B), the second foamed adhesive material 32 is formed before the first foamed adhesive material 28 is foamed. Foams and expands toward the top wall 30 </ b> A side of the seal member 30. This is because, as described above, the second foamed adhesive 32 has the property of foaming and curing at a lower temperature than the first foamed adhesive 28 (time difference foaming utilizing the difference in foaming characteristics).

  The second foaming adhesive 32 increases the pressure by foaming and presses the seal member 30 toward the second panel 16 and cures in the foamed state to bond the seal member 30 to the reinforcing member 26. , The end 30D on the opening side of the seal member 30 and the second panel 16 are in close contact with each other, and the state in which the sealing performance is enhanced is maintained.

  For this reason, when the first foaming adhesive 28 is foamed and the reinforcing member 26 is coupled to the vehicle skeleton member 12 (see FIG. 1), the first foaming adhesive 28 effectively enters the mounting hole 16A. Blocked. Thereafter, as shown in FIG. 1, when the first foamed adhesive 28 is foamed and cured, the reinforcing member 26 is coupled to the vehicle skeleton member 12, and the vehicle skeleton member 12 is coupled to the inside thereof. For example, deformation of the closed cross section 18 is prevented or suppressed when a load is applied.

  As described above, according to the vehicle frame member reinforcing structure 10 according to the present embodiment, the first foamed adhesive 28 (foamable material) foamed in the closed cross-sectional structure of the vehicle frame member 12 extends from the mounting hole 16A. Leakage can be prevented or suppressed.

  Supplementally, for example, in a contrasting structure in which the foamed adhesive material leaks (overflows) due to foaming, abnormal noise occurs due to falling off of the foamed adhesive material after curing, and bolts due to blockage of the hole portion. Various problems such as impossibility of insertion (impossibility of fastening) and deterioration of appearance may occur. In contrast, in the vehicle frame member reinforcing structure 10 according to the present embodiment, the occurrence of such various problems can be prevented or suppressed.

[Second Embodiment]
Next, a vehicle frame member reinforcing structure 40 according to a second embodiment of the present invention will be described with reference to FIGS. 3 and 4. FIG. 3 shows a cross-sectional view of the overall structure of a vehicle skeleton member reinforcing structure 40 according to the second embodiment of the present invention. FIG. 4 shows a state change during bonding in a cross-sectional view. It is shown. As shown in these drawings, the vehicle frame member reinforcing structure 40 includes a clip-attached reinforcing member 42 instead of the reinforcing member 26 (see FIG. 1), and eliminates the seal member 30 (see FIG. 1). It differs from the vehicle frame member reinforcement structure 10 according to the first embodiment in that the two-foam adhesive 32 is disposed around the mounting hole 16A. Other configurations are substantially the same as those of the first embodiment. Therefore, components that are substantially the same as those of the first embodiment are denoted by the same reference numerals and description thereof is omitted.

  As shown in FIG. 3, the vehicle skeleton member reinforcement structure 40 has a structure in which a clip-attached reinforcement member 42 as a reinforcement member is bonded to the inside of the vehicle skeleton member 12 having a closed cross-sectional structure. The clip-attached reinforcing member 42 is formed integrally with resin. A protruding portion 42B protrudes from one surface of the block-shaped main body portion 42A, and a clip portion 42C that protrudes further in the protruding direction from the protruding portion 42B. It is formed in a substantially T shape and can be elastically deformed. The reinforcing member with clip 42 has a main body portion 42A and a projecting portion 42B disposed inside the vehicle skeleton member 12, and the projecting portion 42B is in contact with the inward surface 16B of the second panel 16 and has a clip portion 42C. Is fixed to the second panel 16 through the mounting hole 16A.

  An outer peripheral surface 142A of the main body portion 42A of the reinforcing member with clip 42 is located in the vicinity of the inner surface of the vehicle skeleton member 12 in the cross section shown in FIG. 3, and between the reinforcing member with clip 42 and the vehicle skeleton member 12, One foam adhesive 28 is provided. The first foamed adhesive material 28 couples the clip-attached reinforcing member 42 to the vehicle skeleton member 12 in a foamed state.

  Further, a second foam adhesive 32 is disposed on the outer peripheral side of the projecting portion 42B between the reinforcing member with clip 42 and the vehicle skeleton member 12 and closer to the mounting hole 16A than the first foam adhesive 28. Yes. The second foaming adhesive 32 joins the reinforcing member with clip 42 around the mounting hole 16A in the second panel 16 in a foamed state, and blocks the entry path of the first foaming adhesive 28 to the mounting hole 16A. It has become.

(Changes in state and actions / effects during bonding)
Next, the state change of the first foamed adhesive 28 and the second foamed adhesive 32 when the clip-attached reinforcing member 42 is adhered and the operation and effect of this embodiment will be described with reference to FIG.

  FIG. 4A shows an application state before the first foamed adhesive 28 and the second foamed adhesive 32 are foamed (before being heated). As shown in FIG. 4 (A), the first foamed adhesive 28 is applied to the outer peripheral surface 142A of the main body portion 42A of the reinforcing member with clip 42 in the range excluding the vicinity of the protruding portion 42B, and the protruding portion The second foamed adhesive 32 is applied in the vicinity of the portion 42B (that is, closer to the mounting hole 16A than the first foamed adhesive 28). A predetermined interval is provided between the surface of each coating layer of the first foam adhesive 28 and the second foam adhesive 32 and the inner surface of the vehicle skeleton member 12.

  Next, when heated from the outside of the vehicle skeleton member 12 in the state of FIG. 4A, as shown in FIG. 4B, the second foam adhesive 32 is formed before the first foam adhesive 28 is foamed. Foams. This is because, as described above, the second foamed adhesive 32 has a property of foaming and curing at a lower temperature than the first foamed adhesive 28.

  At this time, the second foamed adhesive 32 expands toward the second panel 16 while expanding along the outer peripheral surface of the protrusion 42B of the reinforcing member 42 with clip and into the space opposite to the protrusion 42B. In addition, after the second foamed adhesive 32 reaches the second panel 16 due to expansion, the second foamed adhesive 32 can expand into the space on the opposite side to the protruding portion 42B side. Intrusion of the second foamed adhesive 32 between the portion 42B and the second panel 16 (in other words, the attachment hole 16A side) is suppressed.

  Since the second foamed adhesive 32 is in a foamed state, the reinforcing member with clip 42 is coupled to the periphery of the mounting hole 16A in the second panel 16, and the entry path of the first foamed adhesive 28 into the mounting hole 16A is blocked. Intrusion of the first foamed adhesive 28 into the mounting hole 16A is blocked. Thereafter, as shown in FIG. 3, when the first foamed adhesive 28 is foamed and cured, the clip-attached reinforcing member 42 is stably coupled to the vehicle skeleton member 12, and the vehicle skeleton member 12 is coupled to the inside thereof. For example, when a load is applied, deformation of the closed cross section 18 is prevented or suppressed.

  As described above, according to the vehicle skeleton member reinforcing structure 40 according to the present embodiment, the first foamed adhesive 28 (foamable material) foamed within the closed cross-sectional structure of the vehicle skeleton member 12 extends from the mounting hole 16A. Leakage can be prevented or suppressed with a simple configuration.

[Supplementary explanation of the embodiment]
In the above embodiment, the vehicle skeleton member 12 is made of metal. However, the vehicle skeleton member 12 may be another vehicle skeleton member such as a vehicle skeleton member made of fiber reinforced resin, for example. .

  Moreover, in the said embodiment, although the reinforcement member 26 and the reinforcement member 42 with a clip are made from resin, reinforcement members are other reinforcement members, such as a fiber reinforcement resin, a metal reinforcement member, etc., for example. It may be.

  In the first embodiment, the sealing member 30 as the blocking means has a bottomed cylindrical shape. However, the blocking means is formed in, for example, a cylindrical shape and is installed in the middle portion in the axial direction of the cylinder. Other blocking means such as a cylindrical body in which a partition wall that separates the space is formed (a cross-sectional view similar to FIG. 1 is H-shaped) may be used. When the cylindrical body is applied as the blocking means, for example, a convex portion that protrudes toward the attachment hole (hole) side is formed on the reinforcing member, and a concave portion on the side opposite to the concave portion of the cylindrical body is formed. You may arrange | position so that the outer peripheral wall part of the said convex part may surface-contact with an inner peripheral wall surface.

  Further, even if the end of the blocking means on the opening side is bent along the plate around the hole (for example, the cross-sectional shape of the seal member 30 (blocking means) in FIG. 1 is a hat shape). Anyway)

  Furthermore, in the said embodiment, although the 2nd foaming adhesive material 32 is equipped with the characteristic which foams and hardens | cures at low temperature compared with the 1st foaming adhesive material 28, a 2nd foaming adhesive material is 1st foaming adhesiveness. It may be a second foaming adhesive material having a property of foaming and curing at a faster foaming speed (a property of early curing) than the material.

  Furthermore, in the second embodiment, the clip-attached reinforcing member 42 may be provided with, for example, a stepped portion that protrudes one step toward the second panel 16 at a portion near the protruding portion 42B of the main body portion 42A. A second foamed adhesive (32) may be disposed between the lower panel (16) and the lower panel (16). Moreover, in the structure provided with such a step part, it replaces with the 2nd foaming adhesive material 32, and arrange | positions the 2nd foaming adhesive material of the low foaming rate lower than the 1st foaming adhesive material 28, for example. At the same time, instead of the first foam adhesive 28, a first foam adhesive having a high foaming rate higher than that of the second foam adhesive may be provided.

It is sectional drawing which shows the whole structure of the reinforcement structure of the vehicle frame member which concerns on the 1st Embodiment of this invention. It is sectional drawing which shows the state change at the time of adhesion | attachment in the reinforcement structure of the vehicle frame member which concerns on the 1st Embodiment of this invention. FIG. 2A shows an application state before the first foamed adhesive and the second foamed adhesive are foamed. FIG. 2 (B) shows a state where the second foamed adhesive material is foamed. It is sectional drawing which shows the whole structure of the reinforcement structure of the vehicle frame member which concerns on the 2nd Embodiment of this invention. It is sectional drawing which shows the state change at the time of adhesion | attachment in the reinforcement structure of the vehicle frame member which concerns on the 2nd Embodiment of this invention. FIG. 4A shows an application state before the first foamed adhesive and the second foamed adhesive are foamed. FIG. 4B shows a state where the second foamed adhesive material is foamed.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 Reinforcement structure of vehicle frame member 12 Vehicle frame member 16 2nd panel (plate part)
16A Mounting hole (hole)
26 Reinforcing member 28 First foam adhesive 30 Seal member (blocking means)
30C Concave portion 30D Open side end 32 Second foam adhesive 40 Reinforcement structure of vehicle skeleton member 42 Reinforcement member with clip (reinforcement member)

Claims (3)

A reinforcing member disposed inside a vehicle skeleton member having a closed cross-sectional structure including a plate portion in which a hole is formed;
A first foamed adhesive disposed between the reinforcing member and the vehicle skeleton member, the foamed state coupling the reinforcing member to the vehicle skeleton member;
The hole of the first foamed adhesive material is provided with a concave portion that is disposed inside the vehicle skeleton member and is formed with an opening, and the opening-side end portion is in contact with the plate portion around the hole portion. Blocking means for blocking the intrusion route to the part;
A second foaming adhesive that is disposed between the reinforcing member and the blocking means, presses the blocking means toward the plate portion by foaming, and binds the blocking means to the reinforcing member in a foamed state. When,
A vehicle skeleton member reinforcing structure.   The reinforcing structure for a vehicle skeleton member according to claim 1, wherein the second foamed adhesive has a property of being foamed and cured at a low temperature or at a faster foaming speed than the first foamed adhesive. A reinforcing member disposed inside a vehicle skeleton member having a closed cross-sectional structure including a plate portion in which a hole is formed;
A first foamed adhesive disposed between the reinforcing member and the vehicle skeleton member, the foamed state coupling the reinforcing member to the vehicle skeleton member;
The reinforcing member is disposed between the reinforcing member and the vehicle frame member and closer to the hole than the first foamed adhesive, and the reinforcing member is coupled to the periphery of the hole in the plate in a foamed state. A second foamed adhesive that blocks an entry path to the hole of the first foamed adhesive;
A vehicle skeleton member reinforcing structure.

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