JP5287279B2 - Part fastening structure - Google Patents

Description

  The present invention relates to a component fastening structure for attaching a component to be fastened to a base member containing resin by fastening.

  Insert the collar portion of the flanged collar into the collar insertion hole of the FRP plate, bring the metal plate into contact with the end surface of the collar portion that is coincident with the surface of the FRP plate, and apply a fastening load to the flanged collar and the metal plate. There is known a fastening method of a plate material that is made to act (for example, see Patent Document 1).

JP 2004-225802 A JP 2006-329336 A

  However, in the conventional technology as described above, it is difficult to make the end face of the collar coincide with the surface of the FRP plate, and there is room for improvement in order to obtain proper fastening.

  In view of the above fact, an object of the present invention is to obtain a component fastening structure capable of satisfactorily fastening a component to be fastened to a base member.

According to a first aspect of the present invention, there is provided a component fastening structure including: a first metal member having a collar portion penetrating a base member containing resin; and a flange portion projecting from one end side of the collar portion; A second portion that is in contact with the other end of the collar portion, surrounds a contact surface with the collar portion, and has a convex portion projecting from the peripheral portion to the flange portion side so as to sandwich the base member with the flange portion; and the metal member of the by the action of fastening load to the first and second metal members, the base member with respect to at least the second metal member of the flange portion and a second metal member of the first metal member A fastening means for fastening the part to be fastened to the side opposite to the side, a first adhesive layer provided between the flange portion of the first metal member and the base member, and a protrusion of the second metal member And the base member Provided, and a, a second adhesive layer which is thinner than the first adhesive layer.

  In the component fastening structure according to claim 1, the flange portion of the first metal member and the convex portion of the second metal member in a state where the second metal member is in contact with the end face of the collar portion of the first metal member. The base member is sandwiched directly or indirectly. Here, since the end face of the collar portion penetrating the base member protrudes from the surface of the base member, the end face of the collar portion and the second metal member can be brought into direct contact (metal touch). it can. Moreover, since the convex part protrudes from the periphery of the contact surface with the end face of the collar part in the second metal member toward the flange part side, in the configuration in which the collar part is projected as described above, the flange part sandwiching the base member; It is possible to set an appropriate distance according to the thickness of the base part with respect to the convex part. The fastened component is fastened by fastening means to at least one of the first metal member opposite to the base member with respect to the flange portion and the second metal member opposite to the base member.

  As described above, in the component fastening structure, since the first metal member and the second metal member are in direct contact with each other, it is possible to suppress the fastening load of the fastening means from acting on the base member. It is possible to suppress loosening due to creep of the member.

Thus, in the component fastening structure according to claim 1, the component to be fastened can be fastened to the base member satisfactorily.
Moreover, in this component fastening structure, each adhesive layer can be loaded with load transmission from the fastened member to the base member. For example, when an external force acts on the second metal member via the part to be fastened, a peeling stress acts on the adhesive layer between the convex portion of the second metal member and the base member. Here, since the adhesive layer between the convex portion of the second metal member and the base member is relatively thin, the peeling stress due to the external force described above is reduced.

According to a second aspect of the present invention, there is provided a component fastening structure including: a first metal member having a collar portion penetrating a base member containing resin; and a flange portion projecting from one end side of the collar portion; A second portion that is in contact with the other end of the collar portion, surrounds a contact surface with the collar portion, and has a convex portion projecting from the peripheral portion to the flange portion side so as to sandwich the base member with the flange portion; and the metal member of the by the action of fastening load to the first and second metal members, the base member with respect to at least the second metal member of the flange portion and a second metal member of the first metal member Fastening means for fastening a part to be fastened to the side opposite to the side, wherein the base member has a first wall part facing the flange part side of the first metal member, and a convex of the second metal member. A second wall facing the side, In the range where at least the flange portion and the convex portion overlap between the first wall portion and the second wall portion, the outer edge coincides with the outer edge of the flange portion and the outer edge of the convex portion, or the flange portion And an insert portion that is provided so as to protrude from the outer edge of the convex portion in a direction away from the collar portion and fills a gap between the first wall portion and the second wall portion. And an adhesive layer is provided between the flange portion of the first metal member and the base member, and between the convex portion of the second metal member and the base member, respectively. The adhesive layer between the convex part of the second metal member and the base member is formed thinner than the adhesive layer between the flange part of the first metal member and the base member .

In the component fastening structure according to claim 2, the flange portion of the first metal member and the convex portion of the second metal member in a state in which the second metal member is in contact with the end face of the collar portion of the first metal member. The base member is sandwiched directly or indirectly. Here, since the end face of the collar portion penetrating the base member protrudes from the surface of the base member, the end face of the collar portion and the second metal member can be brought into direct contact (metal touch). it can. Moreover, since the convex part protrudes from the periphery of the contact surface with the end face of the collar part in the second metal member toward the flange part side, in the configuration in which the collar part is projected as described above, the flange part sandwiching the base member; It is possible to set an appropriate distance according to the thickness of the base part with respect to the convex part. The fastened component is fastened by fastening means to at least one of the first metal member opposite to the base member with respect to the flange portion and the second metal member opposite to the base member.
As described above, in the component fastening structure, since the first metal member and the second metal member are in direct contact with each other, it is possible to suppress the fastening load of the fastening means from acting on the base member. It is possible to suppress loosening due to creep of the member .
Thus, in the component fastening structure according to claim 2, the fastened component can be fastened to the base member satisfactorily.
Moreover, in this component fastening structure, an insert part is provided in the fastening part of the to-be-fastened part in a base member, and this base member (the 1st wall part, the 2nd wall part) is reinforced. That is, in the base member having a hollow (flat cross-section) structure, the surface rigidity of the first wall portion and the second wall portion is improved at the portion where the insert portion is provided, so that the parts to be fastened can be fastened firmly.
Furthermore, in this component fastening structure, since the insert portion protrudes outward in the radial direction of the collar portion at least as much as the flange portion and the convex portion, the first wall portion and the second wall portion are formed on the inside (flange portion) by the insert portion. And from the side opposite to the convex portion).

According to a third aspect of the present invention, there is provided a component fastening structure including: a first metal member having a collar portion penetrating a base member containing resin; and a flange portion projecting from one end side of the collar portion; A second portion that is in contact with the other end of the collar portion, surrounds a contact surface with the collar portion, and has a convex portion projecting from the peripheral portion to the flange portion side so as to sandwich the base member with the flange portion; and the metal member of, the first and by the action of fastening load to the second metal member, wherein for at least said second metal member of the flange portion and a second metal member of the first metal member base Fastening means for fastening a part to be fastened on the side opposite to the member side, and an adhesive layer provided between at least one of the flange portion and the first wall portion and between the convex portion and the second wall portion And comprising the base The material includes a first wall portion facing the flange portion side of the first metal member, a second wall portion facing the convex portion side of the second metal member, and a sheet-like carbon fiber reinforced resin. Laminated in the thickness direction of the base member, and the outer edge of the flange portion and the first wall portion is at least overlapped with the flange portion and the convex portion between the first wall portion and the second wall portion. Or the outer edge of the adhesive layer between the convex portion and the second wall portion, or the outer edge is between the flange portion and the first wall portion. The outer edge of the adhesive layer and the outer edge of the adhesive layer between the convex portion and the second wall portion are provided so as to protrude in a direction away from the collar portion, and the first wall portion and the second wall portion. It is configured to include a, and an insert portion to fill the gap between the wall and off of the first metal member An adhesive layer is provided between the flange portion and the base member, and between the convex portion of the second metal member and the base member, respectively, and the convex portion of the second metal member and the base member The adhesive layer between the base member is formed thinner than the adhesive layer between the flange portion of the first metal member and the base member .

In the component fastening structure according to claim 3 , the flange portion of the first metal member and the convex portion of the second metal member in a state where the second metal member is in contact with the end face of the collar portion of the first metal member. The base member is sandwiched directly or indirectly. Here, since the end face of the collar portion penetrating the base member protrudes from the surface of the base member, the end face of the collar portion and the second metal member can be brought into direct contact (metal touch). it can. Moreover, since the convex part protrudes from the periphery of the contact surface with the end face of the collar part in the second metal member toward the flange part side, in the configuration in which the collar part is projected as described above, the flange part sandwiching the base member; It is possible to set an appropriate distance according to the thickness of the base part with respect to the convex part. The fastened component is fastened by fastening means to at least one of the first metal member opposite to the base member with respect to the flange portion and the second metal member opposite to the base member.
As described above, in the component fastening structure, since the first metal member and the second metal member are in direct contact with each other, it is possible to suppress the fastening load of the fastening means from acting on the base member. It is possible to suppress loosening due to creep of the member .
Thus, in the component fastening structure according to the third aspect, it is possible to satisfactorily fasten the fastened component to the base member.
Moreover, in this component fastening structure, an insert part is provided in the fastening part of the to-be-fastened part in a base member, and this base member (the 1st wall part, the 2nd wall part) is reinforced. That is, in the base member having a hollow (flat cross-section) structure, the surface rigidity of the first wall portion and the second wall portion is improved at the portion where the insert portion is provided, so that the parts to be fastened can be fastened firmly.
Furthermore, in this component fastening structure, the insert material formed by laminating sheet-like carbon fiber reinforced resin in the thickness direction has a high coefficient of linear expansion in the thickness direction, so that the first, The second wall is deformed. Here, the outer edge of the insert part is equal to or more than the outer edge of the adhesive layer provided on at least one of the flange part and the first wall part and between the convex part and the second wall part. Since it protrudes outside, deformation of the first wall portion and the second wall portion within the bonding range by these adhesive layers is suppressed, and these adhesive layers are protected.

In the component fastening structure according to claims 2 and 3, it is possible to cause each adhesive layer to bear the load transmission from the fastened member to the base member. For example, when an external force acts on the second metal member via the part to be fastened, a peeling stress acts on the adhesive layer between the convex portion of the second metal member and the base member. Here, since the adhesive layer between the convex portion of the second metal member and the base member is relatively thin, the peeling stress due to the external force described above is reduced.

The component fastening structure according to a fifth aspect of the present invention is the component fastening structure according to any one of the first to fourth aspects, wherein the outer edge shape of the flange portion of the first metal member and the second At least one of the outer edge shape of the part in which the convex part in the metal member was formed is non-circular.

  In the component fastening structure according to claim 5, for example, the flange portion of the first metal member, the bonding area between the convex portion of the second metal member and the base member according to the part to be fastened or the installation space, the breaking strength, It can be ensured by the dimensional shape of the flange portion and the convex portion.

  The component fastening structure according to a sixth aspect of the present invention is the component fastening structure according to any one of the first to fifth aspects, wherein the fastening means is provided in the collar portion of the first metal member. It has a screw part and a bolt screwed into the female screw part.

  In the component fastening structure according to the sixth aspect, since the female thread portion is formed in the collar portion, in other words, since the collar portion functions as a nut of the fastening means, the overall configuration is compact.

The component fastening structure according to a seventh aspect of the present invention is the component fastening structure according to any one of the first to sixth aspects, wherein the convex portion with respect to the contact surface with the collar portion of the second metal member. The protrusion height is set smaller than the protrusion height from the surface of the base member to the contact surface of the collar portion with the second metal member .

In the component fastening structure according to claim 7, since the protruding height of the convex portion with respect to the contact surface with the collar portion in the second metal member is smaller than the protruding height of the end surface of the collar portion with respect to the base member surface, the convex portion is the base. The end face of the collar portion and the second metal member can be reliably brought into contact (metal touch) without coming into contact with the member.

Parts fastening structure according to a fourth aspect of the invention, the component fastening structure according to claim 2, wherein the insert portion is formed by laminating a sheet-like carbon fiber reinforced plastic in a thickness direction.

In the component fastening structure according to claim 4, since the insert material formed by laminating sheet-like carbon fiber reinforced resin in the thickness direction has a high linear expansion coefficient in the thickness direction, the insert material is expanded in the thickness direction under a high temperature environment. 1. Deform the second wall. Here, as described above, the outer edge of the insert portion projects outwardly in the radial direction of the collar portion at least as much as the outer edges of the flange portion and the convex portion, and therefore between the flange portion and the first wall portion and the convex portion. Deformation of the adhesive layer provided on at least one of the second wall portions is suppressed, and the adhesive layer is protected.

  As described above, the component fastening structure according to the present invention has an excellent effect that the fastened component can be fastened to the base member satisfactorily.

It is sectional drawing which shows the components fastening structure for vehicles which concerns on the 1st Embodiment of this invention. It is a figure which shows the collar nut with a flange which comprises the vehicle component fastening structure which concerns on the 1st Embodiment of this invention, Comprising: (A) is a sectional side view, (B) is a top view. It is a figure which shows the spacer which comprises the vehicle component fastening structure which concerns on the 1st Embodiment of this invention, Comprising: (A) is a top view, (B) is a sectional side view. It is a figure which shows the components fastening structure assembly process for vehicles which concerns on the 1st Embodiment of this invention, Comprising: (A) is sectional drawing which shows an unprocessed vehicle body frame member, (B) is the vehicle body frame which gave the hole process Sectional drawing which shows a member, (C) is sectional drawing which shows the state which press-fitted the color nut with a flange to a vehicle body frame member, (D) is sectional drawing of the state which carried out the metal touch of the collar nut with a flange and a spacer. It is sectional drawing which shows the components fastening structure for vehicles which concerns on the 2nd Embodiment of this invention. It is sectional drawing which shows the components fastening structure for vehicles which concerns on the 3rd Embodiment of this invention. It is sectional drawing which shows the components fastening structure for vehicles which concerns on the 4th Embodiment of this invention. It is sectional drawing which shows the components fastening structure for vehicles which concerns on the 5th Embodiment of this invention. It is sectional drawing which shows the components fastening structure for vehicles which concerns on the 6th Embodiment of this invention. It is a schematic diagram modeling and showing the upper and lower adhesive layers of the vehicle component fastening structure according to the sixth embodiment of the present invention. It is sectional drawing which shows the components fastening structure for vehicles which concerns on the modification of the 6th Embodiment of this invention. It is a figure which shows the modification of the collar nut with a flange which comprises the vehicle component fastening structure which concerns on each embodiment of this invention, Comprising: (A) is a sectional side view, (B) is a top view. It is a figure which shows the modification of the spacer which comprises the vehicle component fastening structure which concerns on each embodiment of this invention, Comprising: (A) is a top view, (B) is a sectional side view. It is sectional drawing which shows the components fastening structure for vehicles which concerns on the 7th Embodiment of this invention. It is a figure which expands and shows a part of vehicle components fastening structure concerning the 7th Embodiment of this invention, Comprising: (A) is sectional drawing in normal temperature environment, (B) is sectional drawing at the time of thermal expansion It is. It is sectional drawing which shows the components fastening structure for vehicles which concerns on a reference example. It is a figure which shows a comparative example with embodiment of this invention, Comprising: (A) is sectional drawing which shows the mounting state of the collar nut with a flange, (B) is the end surface of the collar nut with a flange retracted in the vehicle body frame member (C) is sectional drawing when the end surface of the collar nut with a flange protrudes from the surface of a vehicle body frame member. It is a figure which expands and shows a part of vehicle component fastening structure which concerns on the 2nd comparative example with embodiment of this invention, Comprising: (A) is sectional drawing in normal temperature environment, (B) is at the time of thermal expansion FIG.

  A vehicle component fastening structure 10 to which a component fastening structure according to an embodiment of the present invention is applied will be described with reference to FIGS. An arrow UP and an arrow LO that are appropriately described in each figure indicate an upward direction and a downward direction of the automobile to which the vehicle component fastening structure 10 is applied, respectively.

  FIG. 1 is a sectional view showing the overall configuration of the vehicle component fastening structure 10. As shown in this figure, a vehicle component fastening structure 10 fixes a metal seat rail 14 as a fastening component to a vehicle body skeleton member 12 as a base member made of a material including a resin material by fastening. For the structure. This will be specifically described below.

  The vehicle body skeleton member 12 has a closed cross-sectional structure made of carbon fiber reinforced plastic (CFRP) as a composite material formed by solidifying carbon fibers with a resin, and a lower wall as a first wall portion facing the vehicle in the vertical direction. 16 and an upper wall 18 as a second wall portion. An insert portion 20 that fills a vertical gap between the lower wall 16 and the upper wall 18 is provided at a fastening portion of the seat rail 14 in the vehicle body skeleton member 12. In this embodiment, the insert portion 20 is made of CFRP and is integrally formed with the vehicle body skeleton member 12 (the lower wall 16 and the upper wall 18).

  With this insert portion 20, the lower body 16 and the upper wall 18 of the vehicle body skeleton member 12 are reinforced (improves surface rigidity) at the fastening portion of the seat rail 14. In addition, the insert part 20 is provided in the range where the flange part 28 and the convex part 36 which are mentioned later by planar view overlap over substantially the whole surface. Although not shown, the insert portion 20 in this embodiment is formed so as to entirely fill the closed cross section of the vehicle body skeleton member 12 in a cross-sectional view orthogonal to the longitudinal direction of the vehicle body skeleton member 12.

  The vehicle body skeleton member 12 described above is formed with a through hole 22 provided through the lower wall 16, the upper wall 18, and the insert portion 20. The vehicle component fastening structure 10 includes a flanged collar nut 24 made of metal as a first metal member that penetrates the through hole 22. The flanged collar nut 24 is made of, for example, aluminum (pure aluminum or aluminum alloy) or the like.

  As shown in FIGS. 2A and 2B, the flanged collar nut 24 includes a collar portion 26 formed in a substantially bottomed cylindrical shape, and a radially outer side from one axial end portion of the collar portion 26. And a flange portion 28 projecting over. The collar portion 26 has a female screw 30 formed on the inner periphery thereof, and functions as a nut that constitutes a fastening means. A concave portion 32 that opens radially outward is formed at a substantially central portion in the axial direction on the outer periphery of the collar portion 26. In this embodiment, the concave portion 32 is an annular concave portion formed on the outer periphery of the collar portion 26 so as to be recognized as a small-diameter portion having a smaller diameter than other portions of the collar portion 26. It has become.

  The flange portion 28 is formed in a substantially disc shape as a whole. In this embodiment, the flange portion 28 has a central portion 28A thicker than the peripheral portion 28B. As a result, the flange portion 28 has improved rigidity (bending rigidity) against an external force input via the seat rail 14, for example, and is configured to be more difficult to deform than the external force.

  As shown in FIG. 1, in the collar nut 24 with flange, the collar portion 26 is press-fitted into the through hole 22 of the vehicle body skeleton member 12 and passes through the through hole 22. As described above, the collar portion 26 in which the concave portion 32 forming the small-diameter portion is formed has a configuration in which the press-fitting area, that is, the press-fit load, is reduced as compared with a configuration without the concave portion 32.

  The flange portion 28 is bonded to the surface (lower surface) of the lower wall 16 with an adhesive layer (adhesive) S1. The adhesive layer S1 prevents the flanged collar nut 24 from rotating together (relative angular displacement with respect to the vehicle body skeleton member 12) when a bolt 38, which will be described later, is screwed onto the female screw 30. In addition, the adhesive layer S1 is configured to prevent water from entering the joint portion of different materials of CFRP and metal.

  In this state where the collar portion 26 is press-fitted into the vehicle body skeleton member 12 and the flange portion 28 is bonded to the vehicle body skeleton member 12, the end surface 26A opposite to the flange portion 28 of the collar portion 26 is the upper wall 18. The height of the protrusion is H1. The end surface 26A of the collar portion 26 is a flat surface (substantially parallel to the surface of the upper wall 18) along a plane orthogonal to the axis.

  Moreover, the vehicle component fastening structure 10 includes a metal spacer 34 as a second metal member. The spacer 34 is made of, for example, aluminum (pure aluminum or aluminum alloy). As shown in FIGS. 3 (A) and 3 (B), the spacer 34 is formed in a substantially annular plate shape having a through hole 35 in the axial center portion, and a central portion (around the through hole 35 around the lower surface). The annular portion) is a seating surface 34A that is flat along a plane orthogonal to the axis. The upper surface of the spacer 34 is a component seating surface 34B parallel to the seating surface 34A.

  From the periphery of the seating surface 34A of the spacer 34, a projecting portion 36 is provided so as to surround the seating surface 34A. The convex portion 36 protrudes along the entire periphery of the spacer 34 to form a ring shape. As shown in FIG. 1, the protruding height of the convex portion 36 with respect to the seating surface 34A is H2, and is smaller than the protruding height H1 with respect to the upper wall 18 of the end surface 26A of the collar portion 26 (H2 <H1). .

  As shown in FIG. 1, the spacer 34 is configured to bring the seat surface 34 </ b> A into surface contact (metal touch) with the end surface 26 </ b> A of the collar portion 26. Hereinafter, a contact surface between the seat surface 34A of the spacer 34 and the end surface 26A of the collar portion 26 is referred to as a contact surface C. In the contact state between the seating surface 34A of the spacer 34 and the end surface 26A of the collar portion 26, the convex portion 36 protrudes downward (flange portion 28, upper wall 18) so as to surround the contact surface C, and the surface of the upper wall 18 Is close to. And the convex part 36 is adhere | attached on the surface (upper surface) of the upper wall 18 with the contact bonding layer (adhesive) S2. The protrusion height H2 described above is set so that the adhesive gap G2 between the convex portion 36 and the upper wall 18 has an appropriate dimension.

  Therefore, in the vehicle component fastening structure 10, the vehicle body skeleton member 12 is sandwiched between the flange portion 28 of the flanged collar nut 24 and the convex portion 36 of the spacer 34 via the adhesive layers S <b> 1 and S <b> 2. The convex portions 36 and the flange portions 28 do not have to have the same dimensional shape. For example, the dimensional shapes of the convex portion 36 and the flange portion 28 are appropriately set in consideration of the required strength, the peripheral space, and the like. be able to.

  In the vehicle component fastening structure 10, the seat rail 14 is fixed to the vehicle body skeleton member 12 by the bolts 38 constituting the fastening means being screwed into the female screws 30 of the collar portion 26. Specifically, a through hole 40 is formed in the seat rail 14, and a bolt body 38 </ b> A that passes through the through hole 35 and the through hole 35 of the spacer 34 is screwed into the female screw 30, whereby the seat rail 14. Are fastened and joined (fastened) between the head 38B of the bolt 38 and the spacer 34 (the flanged collar nut 24). In this embodiment, a washer 42 is interposed between the seat rail 14 and the head 38 </ b> B of the bolt 38.

  Next, a procedure for fastening (assembling) the seat rail 14 to the vehicle body skeleton member 12 by the vehicle component fastening structure 10 will be described with reference to FIG. In fastening the seat rail 14 to the vehicle body skeleton member 12 in the vehicle component fastening structure 10 having the above-described configuration, first, the vehicle body skeleton member 12 reinforced by the insert portion 20 as shown in FIG. As shown in FIG. 4B, hole processing is performed to form the through hole 22.

  Next, an adhesive is applied to the upper surface (surface on the collar portion 26 side) of the flange portion 28 of the flanged collar nut 24, and the collar portion 26 is inserted into the through hole 22 of the vehicle body skeleton member 12 as shown in FIG. Press fit into and penetrate. Along with this, the adhesive applied to the flange portion 28 is brought into contact with the lower wall 16, and an adhesive layer S <b> 1 is formed between the flange portion 28 and the lower wall 16 by curing of the adhesive. That is, the flange portion 28 is bonded to the lower wall 16 (the vehicle body skeleton member 12).

  When the collar portion 26 is press-fitted into the vehicle body skeleton member 12, the press-fit amount is adjusted so that the protruding height of the collar portion 26 with respect to the upper wall 18 of the end surface 26A is H1. That is, the protrusion height H1 with respect to the upper wall 18 of the end face 26A of the collar portion 26 is set as a management dimension, and the variation in the difference between the length of the collar portion 26 and the thickness of the vehicle body skeleton member 12 is an adhesive gap corresponding to the thickness of the adhesive layer S1. Adjust with G1.

  Next, an adhesive is applied to the lower surface of the convex portion 36 of the spacer 34, and the seating surface 34A of the spacer 34 is brought into contact with the end surface 26A of the collar portion 26 as shown in FIG. Along with this, the adhesive applied to the convex portion 36 is brought into contact with the upper wall 18, and an adhesive layer S2 is formed between the convex portion 36 and the upper wall 18 by curing of the adhesive. That is, the spacer 34 is bonded to the vehicle body skeleton member 12.

  After the adhesive is cured and the adhesive layers S1 and S2 are formed (at least after the adhesive layer S1 is formed), the seat rail 14 is placed and positioned on the component seating surface 34B of the spacer 34, and the seat rail The bolt body 38 </ b> A of the bolt 38 penetrating through the through hole 40 of 14 and the through hole 35 of the spacer 34 is screwed into the female screw 30. By tightening the bolt with a predetermined torque, for example, the seat rail 14 is properly fastened and fixed between the head portion 38B of the bolt 38 and the spacer 34 (collar portion 26).

  As described above, the vehicle component fastening structure 10 in which the seat rail 14 is fastened and fixed to the vehicle body skeleton member 12 is obtained as shown in FIG.

  Next, the operation of this embodiment will be described.

  In the vehicle component fastening structure 10 configured as described above, the seat rail 14 is fixed to the vehicle body frame member 12 by fastening using the flanged collar nut 24 and the bolt 38. Specifically, the seat rail 14 includes a head portion 38B of a bolt 38 in which a bolt body 38A is screwed to a female screw 30 of the collar portion 26, and a spacer 34 in which a seat surface 34A is in contact with an end surface 26A of the collar portion 26. The vehicle body frame member 12 is fixed by a fastening load acting between the two.

  Here, in the vehicle component fastening structure 10, the end face 26 </ b> A of the collar portion 26 provided on the flanged collar nut 24 and the seating surface 34 </ b> A of the spacer 34 are metal touched, so that the vehicle body skeleton member 12 made of CFRP is used. Does not support the fastening load. For this reason, in the vehicle component fastening structure 10, for example, creep is prevented from occurring in the vehicle body skeleton member 12 in a high temperature environment, and the fastening load of the seat rail 14 is reduced even if creep occurs in the vehicle body skeleton member 12. Is prevented.

  In the vehicle component fastening structure 10, the protrusion height of the collar portion 26 with respect to the upper wall 18 of the end surface 26A is managed as H1, and the protrusion height H2 of the convex portion 36 with respect to the seat surface 34A is smaller than the protrusion height H1. The seating surface 34A of the pacer 34 and the end surface 26A of the collar portion 26 are reliably metal touched. Further, since an appropriate adhesive gap G2 is formed between the convex portion 36 and the upper wall 18, an adhesive layer S2 having an appropriate thickness can be obtained.

  Further, in the vehicle component fastening structure 10, an adhesive layer S <b> 2 is formed between the convex portion 36 and the upper wall 18, and an adhesive layer S <b> 1 between the flange portion 28 of the flanged collar nut 24 and the lower wall 16. In other words, since the vehicle body skeleton member 12 is sandwiched between the convex portion 36 and the flange portion 28 via the adhesive layers S1 and S2, an external force from the seat rail 14 is formed. On the other hand, a load can be transmitted to the vehicle body frame member 12 from both surfaces of the vehicle body frame member 12. Generally, the adhesive layer has a low strength against a load in the pulling (peeling) direction. However, in the vehicle component fastening structure 10 having the adhesive layers S1 and S2 on the upper and lower sides of the vehicle body skeleton member 12 as described above, for example, the vehicle vertical direction When the external force acts, any one of the adhesive layers S1 and S2 transmits a load to the vehicle body skeleton member 12 by compression, so that a strong component mounting portion can be configured.

  The above points will be supplemented by comparison with the comparative example shown in FIG. In the comparative example structure 150 shown in FIG. 17A, an insert material 152 made of aluminum is provided between the lower wall 16 and the upper wall 18 of the vehicle body skeleton member 12. The insert material 152 is bonded to the inner surfaces of the lower wall 16 and the upper wall 18 via adhesive layers S on both upper and lower surfaces. Moreover, in the comparative example structure 150, the collar part 156 which comprises the collar nut 154 with a flange made from steel is press-fitted in the insert material 152. The flange portion 158 of the flanged collar nut 154 is bonded to the lower wall 16 via an adhesive layer S. The end surface 156A of the collar portion 156 is managed so as to be flush with the surface of the upper wall 18.

  However, in the comparative example structure 150 in which the collar portion 156 is press-fitted into the insert material 152, it is difficult to make the end surface 156A of the collar portion 156 flush with the upper wall 18. For this reason, for example, as shown in FIG. 17B, when the end surface 156A of the collar portion 156 is retracted with respect to the upper wall 18, the seat rail 14 is not metal-touched to the end surface 156A of the collar portion 156. The fastening load is supported by the vehicle body skeleton member 12. In this case, it becomes a cause of loosening of the fastening portion due to creep of the vehicle body skeleton member 12 or the like.

  On the other hand, as shown in FIG. 17C, when the end surface 156A of the collar portion 156 protrudes from the upper wall 18, a gap G is formed between the seat rail 14 and the upper wall 18. When a downward load is applied from the seat rail 14, this load is transmitted to the vehicle body skeleton member 12 by pulling the adhesive layer S between the lower wall 16 and the flange portion 158. Since the adhesive layer S between the lower wall 16 and the flange portion 158 has a low strength against the load in the pulling (peeling) direction, it is difficult to ensure the strength against the downward load in the comparative example structure 150. Further, when the adhesive layer S between the lower wall 16 and the flange portion 158 is peeled off, the fastening portion is loosened.

  On the other hand, in the vehicle component fastening structure 10 according to the first embodiment of the present invention, since the spacer 34 is used, the end face 26A of the collar portion 26 protrudes from the upper wall 18 by the protrusion height H1 as described above. The seating surface 34A of the spacer 34 and the end surface 26A of the collar portion 26 can be metal touched. Further, since the spacer 34 has the convex portion 36, the convex portion 36 can be brought close to the upper wall 18 in the configuration in which the end surface 26 </ b> A of the collar portion 26 protrudes from the upper wall 18. Thereby, in the vehicle component fastening structure 10, the adhesive layer S <b> 2 can be obtained between the convex portion 36 and the upper wall 18.

  Particularly, since the protrusion height H2 of the protrusion 36 is smaller than the protrusion height H1 of the end face 26A of the collar portion 26 with respect to the upper wall 18, the spacer 34 makes sure that the seating surface 34A is metal touched to the end face 26A of the collar portion 26. Can do. Moreover, since the adhesive gap G2 between the convex part 36 and the upper wall 18 can be appropriately set by managing the protrusion height H1, the adhesive layer S2 having strong adhesive strength can be obtained. Since the adhesive layer S2 transmits the load to the vehicle body skeleton member 12 by compression with respect to the downward load from the seat rail 14, a stronger fastening portion can be obtained.

  As described above, in the vehicle component fastening structure 10, it is possible to provide a highly reliable fastening structure that is less likely to loosen or peel off the adhesive layer as compared with the comparative example structure 150.

  In the vehicle component fastening structure 10, an adhesive layer S <b> 1 is provided between the lower wall 16 and the flange portion 28, which are joint portions between different materials, and an adhesive layer S <b> 2 is provided between the upper wall 18 and the convex portion 36. Therefore, it is possible to prevent or effectively suppress water from entering the joint between these different materials. For this reason, the electrolytic corrosion concerned in the junction part between dissimilar materials is prevented or effectively suppressed. In the configuration of the comparative example structure 150 described above, for example, it is detected that water enters the gap between the seat rail 14 and the upper wall 18 to cause galvanic corrosion. However, in the vehicle component fastening structure 10, the adhesive layer is as described above. Electric corrosion can be suppressed by S1 and S2.

  Further, in the vehicle component fastening structure 10, since the collar portion 26 is press-fitted into the vehicle body skeleton member 12 (insert portion 20), external force from the seat rail 14 is also applied to the vehicle body skeleton member 12 by the press-fit portion (friction thereof). Can be communicated to. In the vehicle component fastening structure 10, since the CFRP insert 20 is used as the insert, the press-fitting load is low as compared with the comparative structure 150 using the aluminum insert 152. In the comparative example structure 150, there is a concern that the lower wall 16 and the upper wall 18 may be deformed or the collar portion 156 may be deformed due to the high press-fitting load. On the other hand, in the vehicle component fastening structure 10, as described above, CFRP is used as the insert portion 20, and the recess portion 32 is provided in the collar portion 26, so that the vehicle body skeleton member 12 is not deformed and the seat rail 14. Therefore, it is possible to obtain an appropriate press-fit load that can bear an external force transmission from the vehicle body frame member 12 to the vehicle body skeleton member 12.

  Next, another embodiment of the present invention will be described. Note that parts or portions that are basically the same as those in the first embodiment or the above-described configuration are denoted by the same reference numerals as those in the first embodiment or the previous configuration, and the description thereof is omitted. May be omitted.

(Second Embodiment)
FIG. 5 shows a vehicle component fastening structure 50 according to a second embodiment of the present invention in a cross-sectional view corresponding to FIG. As shown in this figure, the vehicle component fastening structure 50 includes an insert body 52 configured as a separate member from the vehicle body skeleton member 12 in place of the insert portion 20 formed integrally with the vehicle body skeleton member 12. Thus, this is different from the first embodiment.

  The insert body 52 is formed in a block shape by CFRP, and the lower surface 52A is bonded to the inner surface of the lower wall 16 via the adhesive layer S3, and the upper surface 52B is bonded to the inner surface of the upper wall 18 via the adhesive layer S4. It is glued to. Other configurations of the vehicle component fastening structure 50 are the same as the corresponding configurations of the vehicle component fastening structure 10.

  Therefore, also by the vehicle component fastening structure 50 according to the second embodiment, the same effect can be obtained by the same operation as the vehicle component fastening structure 10 according to the first embodiment. The insert body 52 may be made of, for example, glass fiber reinforced plastic (GFRP) or the like instead of CFRP, or may be made of a metal material such as aluminum. The press-fit load can be adjusted by increasing the vertical width of the recess 32 or providing a plurality of recesses 32.

(Third embodiment)
FIG. 6 shows a vehicle component fastening structure 60 according to a third embodiment of the present invention in a cross-sectional view corresponding to FIG. As shown in this figure, the vehicle component fastening structure 60 according to the first embodiment is that the collar portion 26 is not inserted into the through hole 22 of the vehicle body skeleton member 12 but simply inserted (penetrated). This is different from the vehicle component fastening structure 10. For this reason, the collar portion 26 of the flanged collar nut 24 constituting the vehicle component fastening structure 60 is configured not to have the recess 32. Other configurations of the vehicle component fastening structure 60 are the same as the corresponding configurations of the vehicle component fastening structure 10.

  Therefore, also with the vehicle component fastening structure 60 according to the third embodiment, the vehicle component fastening structure according to the first embodiment is removed except for the effect of the collar portion 26 being press-fitted into the vehicle body skeleton member 12. A similar effect can be obtained by the same action as that of No. 10. Such a vehicle component fastening structure 60 can be applied when the input (external force) from the fastened component (seat rail 14) is relatively small (part). The collar portion 26 that is not press-fitted into the vehicle body skeleton member 12 is not limited to a configuration formed in a cylindrical shape, but can be any shape that is suitable for a peripheral space and that is equal to or lower than a required seating surface pressure at the time of fastening. Therefore, for example, it may be formed in a prismatic shape that forms a square, a hexagon, or the like in cross-sectional view.

(Fourth embodiment)
7 shows a vehicle component fastening structure 70 according to a fourth embodiment of the present invention in a cross-sectional view corresponding to FIG. As shown in this figure, the vehicle component fastening structure 70 is different from the vehicle component fastening structure 10 according to the first embodiment in that the vehicle body skeleton member 12 and the collar portion 26 are bonded.

  Specifically, in the vehicle component fastening structure 70, the adhesive layer S <b> 5 is interposed between the recess 32 of the collar portion 26 and the hole wall of the through hole 22 in the vehicle body skeleton member 12. Thereby, in the vehicle component fastening structure 70, the joint strength between the vehicle body skeleton member 12 and the flanged collar nut 24 is improved. Other configurations of the vehicle component fastening structure 70 are the same as the corresponding configurations of the vehicle component fastening structure 10.

  Therefore, also by the vehicle component fastening structure 70 according to the fourth embodiment, the same effect can be obtained by the same operation as that of the vehicle component fastening structure 10 according to the first embodiment.

(Fifth embodiment)
8 shows a vehicle component fastening structure 80 according to a fifth embodiment of the present invention in a cross-sectional view corresponding to FIG. As shown in this figure, the vehicle component fastening structure 80 includes the vehicle component fastening structure 10 according to the first embodiment in that other fastened components 82 are fastened together with the seat rail 14. Is different.

  Specifically, the vehicle component fastening structure 80 includes a flanged collar 84 as a first metal member instead of the flanged collar nut 24. A through hole 84 is formed in the collar portion 26 constituting the flanged collar 84 instead of the screw hole in which the female screw 30 is formed. The part to be fastened 82 is fastened and joined (fastened) between a nut 86 screwed into the bolt main body 38 </ b> A penetrating the through hole 84 and the lower surface of the flange portion 28 constituting the flanged collar 84. . The other fastened component 82 that is fastened together with the seat rail 14 may be a tunnel brace that reinforces the floor tunnel, for example. Other configurations of the vehicle component fastening structure 80 are the same as the corresponding configurations of the vehicle component fastening structure 10.

  Therefore, also by the vehicle component fastening structure 80 according to the fifth embodiment, the same effect can be obtained by the same operation as the vehicle component fastening structure 10 according to the first embodiment. That is, the present invention can be configured such that the female thread 30 is not formed on the collar portion 26 (the collar portion 26 does not function as a nut). For example, in a configuration in which the fastened component 82 is not fastened (a configuration in which only the seat rail 14 is fastened), a flange 84 may be used and the nut 86 may be screwed into the bolt body 38A of the bolt 38.

(Sixth embodiment)
FIG. 9 shows a vehicle component fastening structure 90 according to a sixth embodiment of the present invention in a cross-sectional view corresponding to FIG. As shown in this figure, the vehicle component fastening structure 90 is formed between the convex portion 36 and the upper wall 18 with respect to the thickness t1 of the adhesive layer S1 (adhesive gap G1) between the flange portion 28 and the lower wall 16. The thickness t2 of the adhesive layer S2 (adhesive gap G2) is small, which is different from the first embodiment in which the thickness t1 and the thickness t2 do not matter (the protrusion height H1 is managed).

  Specifically, in the vehicle component fastening structure 90, the protrusion height H1 managed when the collar portion 26 is press-fitted into the vehicle body skeleton member 12 (through hole 22) is a dimensional tolerance of the protrusion height H2 of the protrusion 36. It is set to be slightly larger than the maximum value in the range (the thickness of the adhesive layer S2 becomes the minimum thickness). The protruding height of the collar portion 26 from the flange portion 28 (the adhesive surface by the adhesive layer S2) is determined so as to satisfy t2 <t1 in consideration of the tolerance of the thickness of the vehicle body skeleton member 12. Therefore, in the vehicle component fastening structure 90, for example, the thickness t2 is managed so that the thickness t2 falls within a predetermined tolerance range (the spacer 34 is bonded first), and then the collar portion 26 is attached to the vehicle body skeleton member 12. It is also possible to adopt a manufacturing method of press-fitting into

  As described above, in the vehicle component fastening structure 90, the spring constant k1 of the adhesive layer S1 is set smaller than the spring constant k2 of the adhesive layer S2. In other words, since the spring constant of the adhesive layer decreases as the thickness increases, the vehicle component fastening structure 90 is configured such that k1 <k2 by setting the thickness t1 to be relatively larger than the thickness t2. ing. Other configurations of the vehicle component fastening structure 90 are the same as the corresponding configurations of the vehicle component fastening structure 10 except that an insert body 52 is provided instead of the insert portion 20 in the example of FIG. 9. .

  Therefore, also by the vehicle component fastening structure 90 according to the sixth embodiment, the same effect can be obtained by the same operation as the vehicle component fastening structure 10 according to the first embodiment.

  Further, in the vehicle component fastening structure 90, since the thickness t1 of the adhesive layer S1 is larger than the thickness t2 of the adhesive layer S2, the peeling of the adhesive layer S1 with respect to the downward load input from the seat rail 14 is more effective. Is suppressed. This point will be supplemented with reference to FIG. FIG. 10 is a model in which the adhesive layers S1 and S2 that generate reaction forces R1 and R2 when a downward load (external force) F is applied from the seat rail 14 as shown in FIG. Since the load F is shared and supported by the adhesive layers S1 and S2, F = R1 + R2. When the displacement due to the load F is x, R1 = k1 × x and R2 = k2 × x.

  Accordingly, it can be understood that the spring constant k1 of the adhesive layer S1 may be reduced in order to suppress the reaction force R1 acting on the adhesive layer S1, that is, the internal force (peeling stress) of the adhesive layer S1. As described above, the larger the thickness is, the smaller the spring constant becomes. Therefore, considering that the sum of the thickness t1 and the thickness t2 is constant, in other words, by making the thickness t1 larger than the thickness t2. By increasing the thickness t1 and decreasing the thickness t2, the spring constant k1 can be reduced and the peel strength of the adhesive layer S1 can be improved.

  As described above, in the vehicle component fastening structure 90, a part of the load F is not only supported (transmitted to the vehicle body skeleton member 12) by compression that is advantageous against peeling in the adhesive layer S2, but is also shared by the adhesive layer S2. Since the reaction force R2 to be applied to the adhesive layer S1 is reduced by increasing the reaction force R2 to be applied, the peeling of the adhesive layer S1 is more effectively suppressed against a downward load input from the seat rail 14 side.

  In the sixth embodiment, the vehicle body skeleton member 12 includes the insert body 52. However, the vehicle body skeleton member 12 may include the insert portion 20, and may be an insert body made of metal, GFRP, or the like. 52 may be adopted. Further, in the vehicle component fastening structure 90, the example in which the collar portion 26 is press-fitted into the through hole 22 is shown, but the collar portion 26 may be fitted or inserted into the through hole 22.

  Furthermore, in the said 6th Embodiment, although the vehicle component fastening structure 90 showed the example which fastens the seat rail 14 with respect to the vehicle body frame member 12, this invention is not limited to this, For example, FIG. ), It may be applied to a use for fastening a fastening component such as a seat rail 14 to a thick plate 92 of a fiber reinforced resin such as CFRP or GFRP. Moreover, it cannot be overemphasized that the structure which concerns on 1st, 3rd-5th embodiment may be applied to the use which fastens a to-be-fastened part to the thick board 92. FIG.

  Furthermore, in each of the above-described embodiments, the flange portion 28 of the flanged collar nut 24 and the flanged collar 84 has a disk shape. However, the present invention is not limited to this, and for example, FIG. As shown in A) and FIG. 12B, the outer shape of the flange portion 28 may be a non-circular shape. That is, the dimensional shape of the flange portion 28 is appropriately set in consideration of the surrounding space, the necessary adhesion area, the breaking load, and the like (the dimensional shape of the other fastened component 82 when fastening the fastened component 82). Just do it.

  Further, in each of the above-described embodiments, an example in which the spacer 34 has a disk shape (the convex portion 36 has an annular shape) has been shown, but the present invention is not limited to this, and for example, FIG. 13 (A) and FIG. As shown in (B), the outer shape of the spacer 34 may be a non-circular shape. In other words, the dimension and shape of the spacer 34 may be appropriately set in consideration of the surrounding space, the necessary adhesion area, the breaking load, the dimension and shape of the fastening portion such as the seat rail 14, and the like.

(Seventh embodiment)
FIG. 14 shows a vehicle component fastening structure 100 according to a seventh embodiment of the present invention in a cross-sectional view corresponding to FIG. As shown in this figure, the vehicle body skeleton member 12 constituting the vehicle component fastening structure 100 has a closed cross-section structure in which the widthwise ends of the lower wall 16 and the upper wall 18 are connected by a pair of side walls 102. Yes.

  Further, supplementing the vehicle body skeleton member 12 constituting the vehicle component fastening structure 100, the lower wall 16, the upper wall 18, and the pair of side walls 102 constituting the vehicle body skeleton member 12 are made of CFPR sheets (prepregs in a predetermined fiber direction). ) In the thickness direction. Needless to say, the vehicle body skeleton member 12 of the first to sixth embodiments may have a closed cross-sectional structure as shown in FIG. 14 and a laminate of CFPR sheets.

  Moreover, the insert part 20 which comprises the components fastening structure 100 for vehicles is comprised as a CFRP laminated body which laminated | stacked the CFPR sheet | seat of the predetermined fiber direction on the thickness direction. Therefore, the CFPR sheet stacking direction is different between the insert portion 20 (the lower wall 16 and the upper wall 18) and the pair of side walls 102 constituting the vehicle body skeleton member 12. In place of the insert portion 20, an insert body 52 configured as a CFRP laminate may be provided. The insert portion 20 (insert body 52) according to this embodiment has a columnar (thick cylinder) shape in which the through hole 22 is provided in the axial center portion.

  In the vehicle component fastening structure 100, if the outer diameter of the insert portion 20 is D1, the outer diameter of the flange portion 28 of the flanged collar nut 24 is D2, and the outer diameter of the convex portion 36 of the spacer 34 is D3, D1 ≧ The outer diameter D1 of the insert portion 20 is set so that D2 and D1 ≧ D3. In this embodiment, as shown in FIG. 14, the outer diameter D1 of the insert portion 20 is set so that D1> D2 and D1> D3.

  The adhesive layer S1 adheres the flange portion 28 and the lower wall 16 over substantially the entire upper surface of the flange portion 28, and the adhesive layer S2 extends over the substantially entire lower surface of the convex portion 36. 36 and the upper wall 18 are bonded together. In other words, the outer diameter of the adhesive layer S1 is D2, and the outer diameter of the adhesive layer S2 is D3. The outer diameter D2 of the adhesive layer S1 (flange portion 28), the outer diameter of the adhesive layer S2 (convex portion 36) Both the diameters D3 are made smaller than the outer diameter D1 of the insert portion 20. Other configurations of the vehicle component fastening structure 100 are the same as the corresponding configurations of the vehicle component fastening structure 10.

  Therefore, also by the vehicle component fastening structure 100 according to the seventh embodiment, the same effect can be obtained by the same operation as the vehicle component fastening structure 10 according to the first embodiment. Further, in the vehicle component fastening structure 100, since the outer diameter of the insert portion 20 is larger than the outer diameter D2 of the flange portion 28 and the outer diameter D3 of the convex portion 36, the adhesive layer when the temperature changes. S1 and S2 are protected.

  This point will be described in comparison with a second comparative example 170 (a configuration included in the present invention) shown in FIGS. 18 (A) and 18 (B). The insert portion 174 of the vehicle body skeleton member 172 constituting the second comparative example 170 is configured as a CFRP laminate similar to the insert portion 20, and the outer diameter D4 is set as D4 <D2, D4 <D3. Yes. In the second comparative example 170, the outer diameters of the adhesive layers S1 and S2 are D2 and D3, respectively.

  By the way, a laminated sheet or laminate of CFRP has a larger linear expansion coefficient in the lamination direction than the fiber orientation direction. For this reason, in the second comparative example 170, when a temperature change is received on the temperature rising side, the vehicle body skeleton member 172 has a pair of pairs as shown in FIG. 18 (B) from the normal temperature state shown in FIG. 18 (A). The insert portion 174 is greatly expanded in the thickness direction with respect to the side wall 102, and the lower wall 16 and the upper wall 18 are bent. At this time, the lower wall 16 and the upper wall 18 are bent most greatly at the peripheral edge portion (the bending rigidity sudden change portion) of the insert portion 174. For this reason, in the second comparative example 170, the adhesive layer S1 and the adhesive layer S2 tend to have high stress (peeling load) at the peripheral edge portion (A portion shown in FIG. 18B) of the insert portion 174.

  In contrast, in the vehicle component fastening structure 100, the outer diameter D1 of the insert portion 20 is equal to or greater than the outer diameter D2 of the flange portion 28 (adhesive layer S1) and the outer diameter D3 of the convex portion 36 (adhesive layer S2). ing. For this reason, when the insert portion 174 is greatly expanded in the thickness direction with respect to the pair of side walls 102 as shown in FIG. 15B from the state at room temperature shown in FIG. 15A, the lower wall 16 and the upper wall The portion where the deflection of 18 is maximum, that is, the portion corresponding to the peripheral portion of the insert portion 20 (B portion shown in FIG. 15B) coincides with the outer edge of the adhesive layers S1 and S2, or the adhesive layers S1 and S2 It is located on the outside in the radial direction. Thereby, in the vehicle component fastening structure 100, even when the insert portion 20 is expanded in the thickness direction with respect to the pair of side walls 102 due to the temperature change on the temperature rising side, the stress acting on the adhesive layers S1 and S2 is kept low. Be maintained. That is, the adhesive layers S <b> 1 and S <b> 2 are protected against thermal expansion of the insert portion 20.

  In the seventh embodiment, the flange portion 28 (adhesive layer S1) and the convex portion 36 (adhesive layer S2) have a circular outer edge shape. However, the present invention is not limited to this example. Instead of at least one of the flange portion 28 and the convex portion 36, the non-circular flange portion 28 (adhesive layer S 1) and the convex portion 36 (adhesive layer S 2) shown in FIGS. 12 and 13 may be provided. . In this case, the insert part 20 is located on the outer side of the flange part 28 (adhesive layer S1) and the outer part of the convex part 36 (adhesive layer S2), or the outer edge of the insert part 20 is located radially outside the collar part 26 in plan view. Thus, it is only necessary to set the dimension and shape.

  Further, in each of the above-described embodiments, the example in which the component fastening structure of the present invention is applied to the use for fixing the seat rail 14 to the skeleton member 12 of the automobile is shown. However, the present invention is not limited to this, and various uses Needless to say, it can be applied to the above.

  Further, in each of the above-described embodiments, the example in which the vehicle body skeleton member 12 is made of CFRP has been shown. However, the present invention is not limited to this, and for example, another FRP such as GFRP is used as the base member in the present invention. You may use what was comprised, and what was comprised only with the resin material.

(Reference example)
Next, a vehicle component fastening structure 200 according to a reference example not included in the present invention will be described with reference to FIG. Note that parts and components that are basically the same as those of the above-described embodiments are denoted by the same reference numerals and description thereof is omitted.

  The vehicle component fastening structure 200 includes a flanged collar nut 204 from which a collar portion 202 that is shorter than the thickness of the vehicle body skeleton member 12 protrudes from the flange portion 28. That is, the end surface 202A of the collar portion 202 is located in the through hole 22 of the vehicle body skeleton member 12. The vehicle component fastening structure 200 includes a flanged collar nut 208 having a collar portion 206 inserted from the upper opening of the through hole 22. The end face 206 </ b> A of the collar portion 206 is metal touched to the end face 202 </ b> A of the collar portion 202 within the through hole 22. And the flange part 210 of the collar nut 208 with a flange and the upper wall 18 of the vehicle body frame member 12 are joined via the adhesive layer S2. The thickness t2 of the adhesive layer S2 is smaller than the thickness t1 of the adhesive layer S1. Also with this configuration, the peeling of the adhesive layer S1 can be effectively suppressed with respect to the downward load input from the seat rail 14. That is, the peel strength of the adhesive layer S1 can be improved.

10 Vehicle parts fastening structure 12 Car body frame member (base member)
14 Seat rail (fastened parts)
16 Lower wall (first wall)
18 Upper wall (second wall)
20 Insert part 24 Collar nut with flange (first metal member)
26 Collar 28 Flange 30 Female thread (Female thread)
34 Spacer (second metal member)
36 Convex part 38 Bolt (fastening means)
50, 60, 70, 80, 90, 100 Parts fastening structure for vehicle 52 Insert body 82 Parts to be fastened 84 Collar with flange (first metal member)
86 Nut (fastening means)

Claims (7)

A first metal member having a collar portion penetrating a base member containing resin and a flange portion projecting from one end side of the collar portion;
A convex portion that is in contact with the other end of the collar portion at the center portion, surrounds the contact surface with the collar portion, and protrudes from the peripheral portion to the flange portion side so as to sandwich the base member between the flange portion and the flange portion. A second metal member having
A fastening load is applied to the first and second metal members, and at least the flange portion of the first metal member and the second metal member on the side opposite to the base member side with respect to the second metal member. Fastening means for fastening the parts to be fastened;
A first adhesive layer provided between the flange portion of the first metal member and the base member;
A second adhesive layer provided between the convex portion of the second metal member and the base member and formed thinner than the first adhesive layer;
Parts fastening structure with A first metal member having a collar portion penetrating a base member containing resin and a flange portion projecting from one end side of the collar portion;
A convex portion that is in contact with the other end of the collar portion at the center portion, surrounds the contact surface with the collar portion, and protrudes from the peripheral portion to the flange portion side so as to sandwich the base member between the flange portion and the flange portion. A second metal member having
A fastening load is applied to the first and second metal members, and at least the flange portion of the first metal member and the second metal member on the side opposite to the base member side with respect to the second metal member . Fastening means for fastening the parts to be fastened;
With
The base member is
A first wall facing the flange side of the first metal member;
A second wall facing the convex side of the second metal member;
The outer edge coincides with the outer edge of the flange portion and the outer edge of the convex portion or at least within the range overlapping the flange portion and the convex portion between the first wall portion and the second wall portion, or the flange portion. The outer edge of the projection and the outer edge of the convex portion are provided so as to protrude in a direction away from the collar portion, and the insert portion fills the gap between the first wall portion and the second wall portion,
It is configured to include a,
An adhesive layer is provided between the flange portion of the first metal member and the base member, and between the convex portion of the second metal member and the base member. The component fastening structure in which the adhesive layer between the convex part of the metal member of 2 and the base member is formed thinner than the adhesive layer between the flange part of the first metal member and the base member . A first metal member having a collar portion penetrating a base member containing resin and a flange portion projecting from one end side of the collar portion;
A convex portion that is in contact with the other end of the collar portion at the center portion, surrounds the contact surface with the collar portion, and protrudes from the peripheral portion to the flange portion side so as to sandwich the base member between the flange portion and the flange portion. A second metal member having
A fastening load is applied to the first and second metal members, and at least one of the flange portion of the first metal member and the second metal member opposite to the base member side with respect to the second metal member . Fastening means for fastening the parts to be fastened to,
An adhesive layer provided between at least one of the flange portion and the first wall portion and between the convex portion and the second wall portion;
With
The base member is
A first wall facing the flange side of the first metal member;
A second wall facing the convex side of the second metal member;
A sheet-like carbon fiber reinforced resin is laminated in the thickness direction of the base member, and an outer edge is in a range overlapping at least the flange portion and the convex portion between the first wall portion and the second wall portion. The outer edge of the adhesive layer between the flange portion and the first wall portion is matched with the outer edge of the adhesive layer between the convex portion and the second wall portion, or the outer edge is the flange portion. And the outer edge of the adhesive layer between the first wall portion and the outer edge of the adhesive layer between the convex portion and the second wall portion so as to protrude in a direction away from the collar portion. An insert portion that fills a gap between the first wall portion and the second wall portion;
It is configured to include a,
An adhesive layer is provided between the flange portion of the first metal member and the base member, and between the convex portion of the second metal member and the base member. The component fastening structure in which the adhesive layer between the convex part of the metal member of 2 and the base member is formed thinner than the adhesive layer between the flange part of the first metal member and the base member . The insert part, component fastening structure according to claim 2 Symbol mounting formed by laminating a sheet-like carbon fiber reinforced plastic in a thickness direction. Outer edge of the flange portion of the first metal member, and one of the second of claims 1 to 4 at least one of the outer edge shape of the portion where the convex portion is formed in the metal member is non-circular parts fastening structure according to 1, Section.   The said fastening means is provided with the collar part of the said 1st metal member, and has a screw part and the volt | bolt screwed together by this internal thread part, It is comprised in any one of Claims 1-5. The component fastening structure according to claim 1.   The protrusion height of the convex portion with respect to the contact surface with the collar portion in the second metal member is set smaller than the protrusion height from the surface of the base member to the contact surface with the second metal member of the collar portion. The component fastening structure according to any one of claims 1 to 6, wherein:

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