JP5353323B2 - Part fastening structure - Google Patents

Description

  The present invention relates to a component fastening structure for attaching a fastened component to a floor by fastening.

  There is known a structure in which a flanged collar is inserted into a resin floor and a seat frame is fastened to the floor with the collar and a bolt (for example, see Patent Document 1). In addition, a technique is known in which a seat base is positioned with respect to a floor by inserting a seat pin positioning pin into a pin hole formed in the floor panel (see, for example, Patent Document 2).

Japanese Utility Model Publication No. 3-107341 JP 2006-298235 A JP-A-10-967 JP-A-7-243450 Japanese Utility Model Publication No. 3-33757 JP 2008-68720 A

  However, in the configuration in which the positioning holes are formed in the resin floor, there is a concern that the strength of the floor is lowered, and there is room for improvement in this respect.

  An object of the present invention is to obtain a component fastening structure capable of positioning a fastened component while ensuring the strength of the floor in consideration of the above facts.

  The component fastening structure according to the first aspect of the present invention includes a component to be fastened and a component-side member disposed on the fastened component side of the base, and fastening means for fastening the fastened component to the base. And positioning means configured to include a positioned portion provided in the component to be fastened and a positioning portion provided in the component-side member and engageable with the positioned portion.

In the component fastening structure according to claim 1, the fastened part is fastened to the base by the fastening means in a state where the fastened part is positioned at a predetermined position by fitting the fastened part to the positioning part of the positioning means. Fixed. Here, in the present component fastening structure, since the positioning portion provided on the component-side member constituting the fastening means is configured to fit with the positioned portion of the fastened component , it is not necessary to provide the positioning portion in the base portion. For this reason, it is possible to configure the positioning means without affecting the base strength and position the fastened component at a predetermined position.

  Thus, in the component fastening structure according to the first aspect, it is possible to position the component to be fastened while ensuring the strength of the base.

  A component fastening structure according to a second aspect of the present invention is the component fastening structure according to the first aspect, further comprising a holding structure for holding the component-side member with respect to the base before fastening by the fastening means.

  In the component fastening structure according to claim 2, the component-side member of the fastening means is held at a predetermined position (including temporary holding) with respect to the base portion before the fastening load is applied. For this reason, the component to be fastened is positioned at a predetermined position with respect to the base portion before the fastening load is applied by the fastening means by fitting the portion to be fastened to the positioning portion of the component side member. As the holding structure, for example, a structure in which (a part of) a base-side component is fitted to a component fixed to the base, or a component-side member is bonded to the base can be employed.

  The component fastening structure according to a third aspect of the present invention is the component fastening structure according to the first or second aspect, wherein the fastening means has a flange on one end side in the fastening direction, and the flange is connected to the base at the base portion. A collar member that is engaged with a surface opposite to the fastened component side and penetrates the base portion; and the component side member that is abutted against the other end of the collar member and sandwiches the base portion with the flange; The fastening component, the collar member, and a fastener that applies a fastening load to the component-side member.

  In the component fastening structure according to claim 3, the collar member is inserted into the base portion from the lower surface side of the base portion, the flange is engaged with the lower surface of the base portion, the component side member is abutted against the end surface of the collar member, and the component side member and A fastening load is applied by the fastening means in a state where the base portion is sandwiched between the flange and the part to be fastened is positioned by the positioning means. In this component fastening structure, the load from the part to be fastened is favorably supported in a wide range (area) of the base portion via the flange and the component side member, and the reliability of the fastening portion is high.

  The component fastening structure according to a fourth aspect of the present invention is the component fastening structure according to any one of the first to third aspects, wherein the base portion includes a resin material reinforced with fibers. .

  In the component fastening structure according to claim 4, the base portion including the resin material is easily reduced in strength by providing a positioning portion such as a hole, but the positioning portion is provided on the component side member constituting the fastening means as described above. Therefore, in the configuration including the base portion including the fiber reinforced resin, the component to be fastened can be fastened to a required position while maintaining high reliability.

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 base portion is a plate-like member constituting a vehicle body floor, and the fastened component These are seat elements constituting a vehicle seat disposed on the vehicle body floor.

  In the component fastening structure according to the fifth aspect, the seat element of the vehicle seat positioned on the vehicle body floor via the component side member can be satisfactorily fastened.

  As described above, the component fastening structure according to the present invention has an excellent effect that the components to be fastened can be positioned while securing the strength of the floor.

It is a figure which shows the components fastening structure for vehicles which concerns on embodiment of this invention, Comprising: It is sectional drawing along the 1-1 line | wire of FIG. It is a figure which shows the components fastening structure for vehicles which concerns on embodiment of this invention, Comprising: It is sectional drawing along the 2-2 line of FIG. It is a figure which shows the washer which comprises the components fastening structure for vehicles which concerns on embodiment of this invention, Comprising: (A) is a top view, (B) is sectional drawing along the 3B-3B line | wire of FIG. 3 (A). is there. 1 is a perspective view showing a floor structure to which a vehicle component fastening structure according to an embodiment of the present invention is applied. 1 is a plan view showing a part of a floor structure to which a vehicle component fastening structure according to an embodiment of the present invention is applied. It is sectional drawing which shows the components fastening structure for vehicles which concerns on the comparative example with embodiment of this invention.

  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. Arrow FR, arrow UP, arrow RH, arrow IN, and arrow OUT that are appropriately shown in each figure are the front (running) direction, the upward direction, the right direction, and the vehicle width direction of the automobile to which the vehicle component fastening structure 10 is applied, respectively. The inside and outside are shown.

  FIG. 4 is a perspective view showing a part of a floor structure F forming a part of a vehicle body to which the vehicle component fastening structure 10 is applied. FIG. 5 shows a floor structure as a vehicle body floor. Part of F is shown in plan view. As shown in these drawings, the floor structure F includes a tunnel 12 extending in the vehicle front-rear direction at the center in the vehicle width direction, and a pair of left and right floor panels 14 provided on both sides of the tunnel 12 in the vehicle width direction. The room partition panel 16 rising from the vehicle rear end of the tunnel 12 and each floor panel 14 is configured.

  In the floor structure F according to this embodiment, each part including the tunnel 12, the left and right floor panels 14, and the room partition panel 16 includes a carbon fiber reinforced resin (hereinafter referred to as a composite material) in which a resin material is reinforced with carbon fibers. , “CFRP”) as a main material. In this embodiment, the floor panel 14 corresponds to a base part and a plate-like member in the present invention.

  On the left and right floor panels 14, metal seat rails 18 are fixed by fastening. The seat rail 18 is for supporting a vehicle seat (not shown), and is grasped as a fastened part and a seat element in the present invention. The seat rails 18 are elongated in the vehicle front-rear direction, and two (total of four) are provided on each floor panel 14 in parallel in the vehicle width direction (in FIG. 4, one floor panel 14 is provided with one). Only the seat rail 18 provided is shown).

  Hereinafter, the vehicle component fastening structure 10 that is a fastening structure of the seat rail 18 to the floor panel 14 will be described. Since the fastening structure of each seat rail 18 to the floor panel 14 is basically the same, the fastening structure of one seat rail 18 to the floor panel 14 will be described below.

  As shown in FIG. 1 which is a cross-sectional view taken along line 1-1 in FIG. 5 and FIG. 2 which is a cross-sectional view taken along line 2-2 in FIG. And has a lower wall 20 as a first wall portion and an upper wall 22 as a second wall portion facing in the vehicle vertical direction. In addition, an insert body 24 that fills the gap in the vertical direction between the lower wall 20 and the upper wall 22 is provided at a fastening portion of the seat rail 18 in the floor panel 14. In this embodiment, the insert body 24 is made of CFRP and is formed in a block shape.

  The insert body 24 may be formed integrally with the floor panel 14 (the lower wall 20 and the upper wall 22), or may be formed separately. With this insert body 24, the lower wall 20 and the upper wall 22 of the floor panel 14 are reinforced (improves surface rigidity) at the fastening portion of the seat rail 18. The insert body 24 is provided in a range where a flange 32 and a washer 34, which will be described later, overlap substantially over the entire surface in plan view. Further, the floor panel 14 is configured such that a foam core 25 made of foamed urethane foam or the like is provided around the insert body 24 between the lower wall 20 and the upper wall 22.

  Further, a through hole 26 provided through the lower wall 20, the upper wall 22, and the insert body 24 is formed at the fastening portion of the seat rail 18 in the floor panel 14. The vehicle component fastening structure 10 includes a metal flanged collar nut 28 as a collar member that penetrates the through hole 26 of the floor panel 14. The flanged collar nut 28 is made of, for example, aluminum (pure aluminum or aluminum alloy).

  The flanged collar nut 28 includes a collar body 30 formed in a substantially bottomed cylindrical shape, and a flange 32 projecting radially outward from one end (lower end) in the axial direction of the collar body 30. The collar body 30 is formed with a female screw 30A on the inner periphery thereof, and fulfills the function of a nut constituting the fastening means. The flange 32 is formed in a substantially disc shape as a whole.

  As shown in FIGS. 1 and 2, in the collar nut 28 with flange, the collar body 30 is press-fitted into the through hole 26 of the floor panel 14 and passes through the through hole 26. The flange 32 is bonded to the surface (lower surface) of the lower wall 20 with an adhesive layer (adhesive) S1. In other words, the flange 32 is engaged with the lower wall 20 forming the lower surface of the floor panel 14 via the adhesive layer S1. With this adhesive layer S1, the vehicle component fastening structure 10 prevents the flanged collar nut 28 from co-rotating (relative angular displacement with respect to the floor panel 14) when a bolt 36, which will be described later, is screwed onto the female screw 30A. It has become. 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 main body 30 is press-fitted into the floor panel 14 and the flange 32 is bonded to the floor panel 14, the end face 30 </ b> B opposite to the flange 32 in the collar main body 30 is more than the surface of the upper wall 22. It protrudes upward (floor structure F side). The end surface 30B of the collar body 30 is a flat surface (substantially parallel to the surface of the upper wall 22) along a plane orthogonal to the axis.

  In addition, the vehicle component fastening structure 10 includes a metal washer 34 as a floor side member. The washer 34 is made of, for example, aluminum (pure aluminum or aluminum alloy). As shown in FIGS. 3A and 3B, the washer 34 has a through hole 35. A collar insertion counterbore 34A that opens to the lower surface side is formed around the through hole 35 of the washer 34. The bottom surface of the collar insertion counterbore 34A is metal touched by the end face 30B of the collar body 30. The seat surface 34B (surface contact over substantially the entire surface) is used.

  The depth of the collar insertion counterbore 34A is set to be smaller than the protruding height of the collar body 30 with respect to the upper wall 22 of the end face 30B, and an adhesive layer S2 is provided between the lower surface 34C of the washer 34 and the upper wall 22. Is formed. That is, the washer 34 is bonded and held to the upper wall 22 of the floor panel 14 by the adhesive layer S2 on the lower surface 34C of the washer 34. In addition, the adhesive layer S2 is configured to prevent water from entering the joint portion of different materials of CFRP and metal. On the other hand, the upper surface of the washer 34 is a seat rail seating surface 34D substantially parallel to the seating surface 34B.

  In the vehicle component fastening structure 10 described above, the seat rail 18 is fixed to the floor panel 14 by the bolts 36 constituting the fastening means being screwed into the female screws 30 </ b> A of the collar body 30. Specifically, a mounting hole 38 is formed in the seat rail 18, and a bolt body 36 </ b> A passing through the mounting hole 38 and the through hole 35 of the washer 34 is screwed into the female screw 30 </ b> A. Thereby, the seat rail 18 is fastened and coupled (fastened) between the head portion 36B of the bolt 36 and the washer 34 (collar nut 28 with flange). That is, the fastening load due to the screwing of the head portion 36B of the bolt 36 and the flanged collar nut 28 acts on each of the flanged collar nut 28, the seat rail 18 and the washer 34.

  In this fastened state, the floor panel 14 is sandwiched between the flange 32 and the lower surface 34C of the washer 34 while the end surface 30B of the collar body 30 and the seating surface 34B of the washer 34 are metal-touched. In this configuration, an excessive fastening load does not act. In this embodiment, the flanged collar nut 28 (collar body 30, flange 32), washer 34, and bolt 36 described above constitute the fastening means 45. The bolt 36 and the collar body 30 correspond to the fastener in the present invention.

  In the vehicle component fastening structure 10, the seat rail 18 is positioned with respect to the floor panel 14 by the positioning means 40 before being fastened and fixed by the fastening means 45. As shown in FIG. 5, the seat rail 18 is fastened to the floor panel 14 at two locations in the vicinity of the front and rear ends in the vehicle front-rear direction. Of these, the positioning means 40 is located at the fastening portion on the vehicle rear end side. Is set. The fastening portion on the vehicle front end side has basically the same structure as the fastening portion on the vehicle rear end side, except that the positioning means 40 (the seat locating pin 42 and the seat locating pin hole 44) is not provided. The positioning means 40 may be arranged in the fastening portion on the vehicle front end side, and the fastening portion on the vehicle rear end side may not have the positioning means 40.

As shown in FIG. 1, the positioning means 40 includes a seat locating pin 42 provided on the seat rail 18 and projecting downward in the vehicle, and a seat locating pin formed in the washer 34 so as to open upward in the vehicle. A seat locating pin hole 44 as a positioning portion to which 42 is fitted (freely fitted) is configured as a main portion.

  In this embodiment, the seat locating pin 42 and the seat locating pin hole 44 are disposed in front of the vehicle with respect to the mounting hole 38 and the through hole 35. For this reason, the washer 34 constituting the positioning means 40 has an oval shape that is long in the vehicle front-rear direction with respect to the vehicle width direction in a plan view, and is disposed slightly offset from the center in the front-rear direction to the rear of the vehicle. A through hole 35 is disposed at the position, and a seat locating pin hole 44 is disposed in front of the vehicle with respect to the through hole 35. The seat locating pin 42 and the seat locating pin hole 44 may be disposed on the rear side of the vehicle with respect to the mounting hole 38 and the through hole 35. In addition, in the fastening part which does not have the positioning means 40 on the vehicle front end side, the washer 34 is formed in a substantially rim shape in a plan view in which a through hole 35 is formed in an axial center part. In this embodiment, the seat locate pin hole 44 is a bottomed hole that does not penetrate the washer 34. The bottom wall 44 </ b> A of the seat locating pin hole 44 is configured to prevent water from entering the joint portion of different materials of CFRP and metal. Further, the bottom wall 44A of the seat locating pin hole 44 is configured to prevent the adhesive before forming the adhesive layer S2 from entering the sheet locating pin 42 side (in the sheet locating pin hole 44). .

  Next, a procedure for fastening (assembling) the seat rail 18 to the floor panel 14 by the vehicle component fastening structure 10 will be described with reference to FIG. In the vehicle component fastening structure 10 configured as described above, first, the flanged collar nut 28 and the washer 34 are assembled to the floor panel 14. That is, the collar body 30 of the flanged collar nut 28 is press-fitted into the through hole 26 formed in the floor panel 14 (the lower wall 20, the upper wall 22, and the insert body 24), and the flange 32 of the flanged collar nut 28 and The wall 20 is bonded through an adhesive layer S1.

  Next, the protruding end from the upper wall 22 of the collar body 30 is inserted into the collar insertion counterbore 34A of the washer 34 so that the seat surface 34B is metal-touched to the end surface 30B of the collar body 30, and the lower surface of the washer 34 34C and the upper wall 22 are bonded via an adhesive layer S2. By inserting the collar body 30 of the flanged collar nut 28 held by the floor panel 14 by press-fitting the collar body 30 and adhering the flange 32 into the collar insertion counterbore 34A, the washer 34 is horizontal to the floor panel 14. Relative displacement in the direction is restricted (being temporarily held). Further, the washer 34 is held (fixed) to the floor panel 14 with a predetermined strength by being bonded to the upper wall 22 via the adhesive layer S2 on the lower surface 34C of the washer 34. That is, the washer 34 in the vehicle component fastening structure 10 is held on the floor panel 14 before fastening with the bolt 36 by at least one of the above-described fitting and adhesion (holding structure in the present invention).

  Next, the seat rail 18 is fixed to the floor panel 14 so that the seat locating pin 42 disposed in the vicinity of the fastening portion on the vehicle rear end side of the seat rail 18 is fitted into the seat locating pin hole 44 of the washer 34. set. Then, with the seat locating pin 42 fitted in the seat locating pin hole 44, the bolt main body 36A is inserted into the mounting hole 38 and the through hole 35 from the upper side of the vehicle at the front and rear fastening portions, respectively. The collar body 30 is screwed into the female screw 30A. When each bolt 36 is tightened with a predetermined torque, the seat rail 18 is properly fastened and fixed between the seat rail seating surface 34D of the washer 34 and the head 36B by the fastening load.

  1 and 2, the vehicle component fastening structure 10 in which the seat rail 18 is fastened and fixed to the floor panel 14 is obtained.

  Next, the operation of this embodiment will be described.

  In the vehicle component fastening structure 10 having the above configuration, the seat rail 18 is fixed to the floor panel 14 by fastening using flanged collar nuts 28 and bolts 36.

  Here, in the vehicle component fastening structure 10, the seat locating pin hole 44 forming the portion on the floor panel 14 side in the positioning means 40 for positioning the seat rail 18 is used for fastening the seat rail 18 to the floor panel 14. The washer 34 constituting the fastening means 45 is provided. Therefore, in the vehicle component fastening structure 10, the seat rail 18 can be properly positioned when fastening the seat rail 18 to the floor panel 14 without affecting the strength of the floor panel 14 made of CFRP. it can.

  In particular, in the vehicle component fastening structure 10, the washer 34 is held by the floor panel 14 before the fastening load is applied by screwing the bolt 36 to the female screw 30 </ b> A of the collar body 30. It is positioned with respect to the floor panel 14 before fastening. That is, in the vehicle component fastening structure 10, the seat rail 18 is positioned with respect to the washer 34 constituting the fastening means 45 for simply fastening the seat rail 18 to the floor panel 14 (indirect (relative) to the floor panel 14). As well as direct (absolute) positioning with respect to the floor panel 14 via the washer 34.

  For example, as shown in FIG. 6, in the positioning means 100 according to the comparative example in which the seat locating pin hole 104 for inserting the seat locating pin 102 of the seat rail 18 is directly provided in the floor panel 14 made of CFRP, the fastening portion is configured. The thin-walled portion t is formed around the collar body 30 to be cracked, which causes a crack starting from the seat locating pin hole 104 due to fatigue endurance (test) due to input (repetitive load) from the seat rail 18, and the occurrence of the crack It is necessary to take measures such as reinforcement in order to prevent (improve the reliability of the fastening portion). Further, in the positioning means 100, the seat locating pin hole 104 is formed in the floor structure F which is a large component, and handling (handling) is complicated and processing time tends to be long. In particular, when the tunnel 12 interferes with the processing machine, drilling from the lower wall 20 side is required, and the processing time becomes longer. Further, the positioning means 100 requires complicated work such as embedding a sealing material for closing the seat locating pin hole 104 for water stop after fastening. For these reasons, the productivity of the comparative example employing the positioning means 100 is poor.

  On the other hand, in the vehicle component fastening structure 10, since the seat locating pin hole 44 is set in the washer 34, it is not necessary to form the seat locating pin hole 104 in the floor panel 14. For this reason, in the vehicle component fastening structure 10, the thin portion t is not formed around the collar body 30 in the floor panel 14, and the floor panel 14 is prevented from cracking due to fatigue durability of the seat rail 18. Is done.

  Further, in the positioning means 40 of the vehicle component fastening structure 10, since the seat locating pin hole 44 is formed in the washer 34, which is a small metal part, the seat locating pin hole 104 is formed in the large floor structure F. Compared with the case where it does, processing of the seat locating pin hole 44 is easy and productivity is remarkably high. Moreover, in the vehicle component fastening structure 10, the seat locating pin hole 104 to be closed with the sealing agent is not formed, which contributes to the improvement of productivity from this viewpoint.

  Thus, in the vehicle component fastening structure 10 according to the first embodiment, the seat rail 18 can be positioned and fastened while securing the strength of the floor panel 14.

  Further, in the vehicle component fastening structure 10, since the floor panel 14 is sandwiched between the flange 32 and the washer 34 of the flanged collar nut 28, a load from the seat rail 18 (particularly, a load in the vehicle vertical direction) is applied. It can be transmitted to a wide area of the floor panel 14 via the seat rail 18 and the washer 34. Thereby, the load concentration to the fastening site | part of each seat rail 18 in the floor panel 14 is eased, and the reliability of this fastening site | part improves further.

  In the above-described embodiment, an example in which the flanged collar nut 28 functions as a nut for screwing the bolt 36 is shown. However, the present invention is not limited to this. For example, the bolt 36 penetrates the collar body 30. And it is good also as a structure screwed together by the nut which is another member. This configuration can be used, for example, when a member other than the seat rail 18 (such as a tunnel brace that spans between the openings of the tunnel 12) is fastened to the lower surface side of the flanged collar nut 28.

  Further, in the above-described embodiment, the example in which the seat locating pin 42 is provided in the seat rail 18 and the seat locating pin hole 44 is provided in the washer 34 is shown, but the present invention is not limited to this, for example, the seat The rail 18 may be provided with a seat locating pin hole 44 (may be a through hole) as a positioned portion, and a seat locating pin 42 that can be fitted into the seat locating pin hole 44 is provided in the washer 34.

  Furthermore, in the above-described embodiment, the example in which the floor panel 14 is made of CFRP has been shown. However, the present invention is not limited to this, and for example, the floor panel 14 may be made of glass fiber reinforced resin or the like. It may be composed of the material.

  Furthermore, in the above-described embodiment, the example in which the seat rail 18 is fastened to the floor panel 14 as the fastened component has been shown. However, the present invention is not limited to this, and for example, a vehicle seat without a slide mechanism is directly used. In particular, the present invention may be applied to fasten to the floor panel 14.

10 Vehicle component fastening structure 14 Floor panel (base, plate-like member)
18 Seat rail (fastened parts, seat elements)
28 Collar Nut with Flange (Color Member) (Fastener)
30 Color body (fastener)
32 Flange 34 Washer (component side member)
34A Counterbore hole (holding structure)
36 bolts (fasteners)
40 Positioning means 42 Sheet locating pin (positioned part)
44 Seat locate pin hole (positioning part)
S2 Adhesive layer (holding structure)

Claims (5)

Fastened parts,
A fastening means configured to include a component-side member disposed on the fastened component side in the base, and fastening the fastened component to the base;
Positioning means configured to include a positioned portion provided in the component to be fastened and a positioning portion provided in the component-side member and fitable with the positioned portion;
Parts fastening structure with   The component fastening structure according to claim 1, further comprising a holding structure for holding the component-side member with respect to the base before being fastened by the fastening means. The fastening means includes
A collar member having a flange on one end side in the fastening direction, engaging the flange with a surface of the base portion opposite to the fastened component side and penetrating the base portion;
The component side member that is abutted against the other end of the collar member and sandwiches the base portion with the flange;
A fastener for applying a fastening load to the part to be fastened, the collar member, and the component side member;
The component fastening structure according to claim 1 or 2, comprising:   The component fastening structure according to claim 1, wherein the base portion includes a resin material reinforced with fibers. The base is a plate-like member constituting a vehicle body floor,
The component fastening structure according to any one of claims 1 to 4, wherein the fastened component is a seat element constituting a vehicle seat disposed on the vehicle body floor.

Images