Seat belt fastener mounting structure

Abstract

This invention provides a seatbelt fastener mounting structure. The seatbelt fastener mounting structure includes: a floor panel on which a seatbelt fastener is mounted; a transverse member disposed on the lower side of the floor panel; and a reinforcing member disposed on the lower side of the floor panel and fixed together with the floor panel and the seatbelt fastener. The reinforcing member is fixed to the transverse member at a position higher than the mounting point of the seatbelt fastener on the floor panel (i.e., the fastener mounting point), and at a position lower than the mounting point of the fastener (i.e., the fastener mounting point).

Description

Technical Field

[0001] This invention relates to a seat belt fastener mounting structure that secures a reinforcing member together with a floor panel and a seat belt fastener. Background Technology

[0002] Japanese Patent Application Publication No. 2000-52919 discloses a seatbelt fastener mounting structure, which includes a floor panel for mounting the seatbelt fastener, a transverse member disposed on the lower side of the floor panel, and a reinforcing member disposed on the lower side of the floor panel and fixed to the seatbelt fastener together with the floor panel. In the technology disclosed in this publication, the reinforcing member is fixed to the transverse member only at a position slightly above the fastener mounting point.

[0003] However, in the technology disclosed in the aforementioned publication, since the reinforcing member is fixed to the transverse member only at a position slightly above the anchor mounting point, when a load is applied to the floor panel and the reinforcing member due to input to the seatbelt anchor, the load is transmitted to the transverse member only through a path slightly above the anchor mounting point. Therefore, it is difficult to distribute and transmit this load to the transverse member. Consequently, it is difficult to suppress deformation of the reinforcing member and the floor panel, necessitating significantly larger reinforcing members or the inclusion of welds to suppress wrinkling on the floor panel. Summary of the Invention

[0004] The purpose of this invention is to provide a seatbelt fastener mounting structure that can distribute and transfer the load to the transverse members when a load is applied to the floor panel and reinforcement due to input to the seatbelt fastener.

[0005] The seat belt fastener mounting structure according to the first aspect of the present invention includes: a floor panel on which a seat belt fastener is mounted; a transverse member disposed on the underside of the floor panel; and a reinforcing member disposed on the underside of the floor panel and fixed together with the floor panel and the seat belt fastener.

[0006] Here, the reinforcing member is fixed to the transverse member at a position higher than the mounting point of the seat belt fastener on the floor panel, i.e., the fastener mounting point, and at a position lower than the fastener mounting point.

[0007] With this structure, the reinforcing member is fixed to the transverse member at a position higher than the anchor mounting point, and also at a position lower than the anchor mounting point. Therefore, when a load is applied to the floor panel and the reinforcing member due to input to the seatbelt anchor, the load can be transferred to the transverse member via both a path higher than the anchor mounting point and a path lower than the anchor mounting point. That is, the load can be distributed and transferred to the transverse member. Therefore, deformation of the reinforcing member and the floor panel can be suppressed. As a result, there is no need for a significantly larger reinforcing member. Furthermore, there is no need to provide welds on the floor panel to suppress wrinkles, and the possibility of the floor panel's formability deteriorating or shape being restricted due to the provision of such welds can be prevented.

[0008] In the seat belt fastener mounting structure described in the first method above, the following method can also be adopted: the floor panel has: a first floor surface; a floor inclined surface that extends from the rear end of the first floor surface toward the rear of the vehicle and rises upward; and a second floor surface that extends from the upper end of the floor inclined surface toward the rear of the vehicle, on which the seat belt fastener is mounted.

[0009] Alternatively, the transverse member may have the following configuration: a bottom wall located lower than the mounting point of the fastener and on the rear side of the vehicle; a front side wall extending upward from the front end of the bottom wall; a rear side wall extending upward from the rear end of the bottom wall; a front flange extending from the upper end of the front side wall toward the front of the vehicle and located upper than the mounting point of the fastener and on the rear side of the vehicle; and a rear flange extending from the upper end of the rear side wall toward the rear of the vehicle. The transverse member is fixed to the second floor surface from below at the front flange and the rear flange.

[0010] Alternatively, the reinforcing member can be fixed to the front flange of the transverse member and to the bottom wall of the transverse member.

[0011] With this structure, the reinforcing member is fixed to the front flange of the transverse member located above the mounting point of the retainer and at the rear of the vehicle, and to the bottom wall of the transverse member located below the mounting point of the retainer and at the rear of the vehicle. Therefore, the reinforcing member can be fixed to the transverse member at both the upper and lower positions relative to the mounting point of the retainer.

[0012] In the seat belt fastener mounting structure described in the first method above, the following method can also be adopted: the reinforcing member has a front wall, an upper wall, and a lower wall opposite to the upper wall in the vertical direction.

[0013] Alternatively, the reinforcement can be fixed to the seat belt fastener together with the floor panel at the front wall, fixed to the front flange of the transverse member at the upper wall, and fixed to the bottom wall of the transverse member at the lower wall.

[0014] With this structure, the reinforcing member has a front wall, an upper wall, and a lower wall. The front wall is fixed to the seatbelt anchor along with the floor panel, the upper wall is fixed to the front flange of the transverse member, and the lower wall is fixed to the bottom wall of the transverse member. Therefore, the reinforcing member can be fixed to the transverse member at both the upper and lower positions relative to the anchor mounting point.

[0015] In the seat belt fastener mounting structure described in the first method above, the following method can also be adopted: a working hole is formed on the lower wall of the reinforcing member, and the working hole is covered and sealed.

[0016] With this structure, a working hole is formed through the lower wall of the reinforcing member. Therefore, even when the reinforcing member has a lower wall, the welding torch can be brought close to the fixed position through the working hole during the fixing (welding) work between the front flange of the transverse member and the upper wall of the reinforcing member and / or the floor panel.

[0017] Furthermore, since the working hole is covered, after the fixing (welding) work of the front flange of the transverse member to the upper wall and / or floor panel of the reinforcement is completed, it is possible to prevent water from outside the vehicle from seeping into the upper side of the lower wall through the working hole.

[0018] In the seat belt fastener mounting structure described in the first method above, the floor panel and the reinforcing member can also be fixed to the seat belt fastener using fastener mounting bolts that pass through the fastener mounting point.

[0019] Alternatively, the reinforcing member may also have a right wall and a left wall.

[0020] Alternatively, the lower, right, and left walls of the reinforcing member can be used to cover the fixing bolts from below and from the left and right sides of the vehicle.

[0021] With this structure, the lower, right, and left walls of the reinforcing member cover the mounting bolts of the fastener from below and from the left and right sides of the vehicle. Therefore, it is possible to prevent water from outside the vehicle from seeping into the passenger compartment from below and from the left and right sides of the vehicle through the holes through which the mounting bolts of the fastener are inserted.

[0022] In the seat belt fastener mounting structure described in the first method above, the following method can also be adopted: the reinforcing member is also fixed to the front flange of the transverse member at the right wall and the left wall.

[0023] With this structure, since the reinforcing member is also fixed to the front flange of the transverse member at the right and left walls, the reinforcement can be more securely fixed to the front flange of the transverse member compared to the case where the reinforcing member is not fixed to the front flange of the transverse member at the right and left walls.

[0024] The seat belt fastener mounting structure described in the first method may also include a sealing material that extends continuously throughout the circumference.

[0025] Alternatively, the sealing material can be disposed between the lower, right, and left walls of the reinforcing member and the floor panel, and between the lower, right, and left walls of the reinforcing member and the transverse member.

[0026] With this structure, sealing material is disposed between the lower, right, and left walls of the reinforcing member and the floor panel, and between the lower, right, and left walls of the reinforcing member and the transverse members. Therefore, it is possible to prevent water from outside the vehicle from seeping into the upper side of the lower wall. Therefore, it is possible to prevent water from outside the vehicle from seeping into the passenger compartment through the holes through which the mounting bolts for the fasteners are inserted. Attached Figure Description

[0027] The features, advantages, and technical and industrial significance of exemplary embodiments of the present invention will now be described in conjunction with the accompanying drawings, wherein like symbols denote like elements, wherein:

[0028] Figure 1 This is a cross-sectional view of the seat belt fastener mounting section structure according to an embodiment of the present invention;

[0029] Figure 2 This is a perspective view of only the reinforcing member and the transverse member of the seat belt fastener mounting section structure according to an embodiment of the present invention;

[0030] Figure 3 The seat belt fastener mounting section structure of this embodiment of the invention Figure 2 A magnified 3D view of part A;

[0031] Figure 4 The seat belt fastener mounting section structure of this embodiment of the invention Figure 2 An enlarged bottom view of part A;

[0032] Figure 5 A perspective view of the reinforcing member in the seat belt fastener mounting structure of an embodiment of the present invention, viewed from the rear of a vehicle.

[0033] Figure 6 This is an exploded perspective view of only the reinforcing member and the transverse member of the seat belt fastener mounting section structure according to an embodiment of the present invention;

[0034] Figure 7 The safety belt fastener mounting section structure of this embodiment of the invention allows the welding torch to pass through. Figure 2 An enlarged perspective view of the working hole of the reinforcing member in part B, close to the fixed (welding) position;

[0035] Figure 8 This is an enlarged bottom view of the seat belt fastener mounting section structure according to an embodiment of the present invention;

[0036] Figure 9 This is a cross-sectional view of the seat belt fastener mounting structure of a comparative example (different from the embodiments of the present invention). Detailed Implementation

[0037] Hereinafter, with reference to the accompanying drawings, the seat belt fastener mounting structure (hereinafter, also referred to as the mounting structure) 10 according to an embodiment of the present invention will be described. In the drawings, UP indicates the upper side of the vehicle, and FR indicates the front side of the vehicle.

[0038] like Figure 1 As shown, the mounting structure 10 includes: a floor panel 30 on which a seat belt fastener 20 is mounted; a transverse member 40 disposed on the underside of the floor panel 30; and a reinforcing member 50 disposed on the underside of the floor panel 30 and fixed together with the floor panel 30 and the seat belt fastener 20.

[0039] The floor panel 30 is also referred to as the floor chassis. The floor panel 30 has a first floor surface 31 extending in a generally horizontal direction, a floor inclined surface 32 rising from the vehicle rear end 31a of the first floor surface 31 toward the vehicle rear and upward, and a second floor surface 33 extending from the upper end (vehicle rear end) 32a of the floor inclined surface 32 toward the vehicle rear and in a generally horizontal direction.

[0040] The seatbelt fastener 20 is fixedly mounted on the inclined surface 32 of the floor panel 30 using a fastener mounting bolt 60 passing through a mounting point P on the floor panel 30. The fastener mounting point P is located at the center of a hole (not shown) formed in the inclined surface 32 of the floor for the fastener mounting bolt 60 to pass through. The seatbelt fastener 20 is a plate-shaped component that supports the seatbelt (not shown), and two are arranged at intervals in the left-right direction for one seatbelt device.

[0041] The transverse member 40 extends in the left-right direction of the vehicle and is hat-shaped when viewed in transverse section. The transverse member 40 has a bottom wall 41, a front sidewall 42 extending upward from the front end 41a of the bottom wall 41, a rear sidewall 43 extending upward from the rear end 41b of the bottom wall 41, a front flange 44 extending forward from the upper end 42a of the front sidewall 42, and a rear flange 45 extending backward from the upper end 43a of the rear sidewall 43. The transverse member 40 is welded from below to the second floor surface 33 at the front flange 44 and rear flange 45, forming a closed section 46 with the second floor surface 33 when viewed in transverse section. The bottom wall 41 of the transverse member 40 is located lower than the fixing point P and rearward of the vehicle, while the front flange 44 of the transverse member 40 is located higher than the fixing point P and rearward of the vehicle.

[0042] The reinforcing member 50 corresponds to the seat belt fastener 20, such as... Figure 2 As shown, for a seatbelt device, a total of two reinforcing members are provided at intervals in the left-right direction of the vehicle: a reinforcing member 50R located at part A and a reinforcing member 50L located at part B. Reinforcing members 50L and 50R have the same structure except for their left-right symmetry. Therefore, in this embodiment of the invention, reinforcing member 50R will be described. Regarding reinforcing member 50L, the R symbol for the corresponding component or part marking will be changed to L, and its description will be omitted.

[0043] like Figure 1 As shown, the reinforcing member 50R is disposed on the underside of the floor panel 30 and is fixed to the seat belt fastener 20 together with the floor panel 30. The reinforcing member 50R is fixed to the seat belt fastener 20 together with the floor panel 30 by screwing the fastener mounting bolt 60 into a weld nut 61 fixed to the reinforcing member 50R. The fastener mounting bolt 60 is inserted into holes respectively provided in the seat belt fastener 20, the floor panel 30, and the reinforcing member 50R. Furthermore, in the illustrated example of the present invention, in... Figure 2 , Figure 3 , Figure 6 Only the hole 51aR in the reinforcing member 50R is shown among the holes for bolt insertion provided on the seat belt fastener 20, floor panel 30 and reinforcing member 50R.

[0044] The reinforcing member 50R has a front wall 51R, an upper wall 52R, a lower wall 53R, a right wall 54R, and a left wall 55R, and is generally box-shaped and opens to the rear of the vehicle.

[0045] like Figure 1As shown, the front wall 51R is configured to overlap the inclined floor surface 32 from below (rear side of the vehicle). The reinforcement 50R is secured to the seatbelt retainer 20 at the front wall 51R together with the floor panel 30. Holes 51aR are formed in the front wall 51R for the retainer mounting bolts 60 to pass through. Figure 3 ), and is fixed with a welding nut 61.

[0046] In addition, such as Figure 3 As shown, a second hole 51bR is also formed on the front wall 51R, and a second weld nut 61a is fixed thereon. The second hole 51bR and the second weld nut 61a are configured to allow the reinforcement 50R to be fixed to the seat track (not shown) together with the floor panel 30 using bolts (not shown).

[0047] Return to Figure 1 The upper wall 52R bends from the upper end of the front wall 51R and extends towards the rear of the vehicle. The upper wall 52R is located above the mounting point P of the fastener. The reinforcing member 50R is fixed to the front flange 44 of the transverse member 40 at the upper wall 52R by spot welding or the like. The fixing W1R of the upper wall 52R and the front flange 44 can be at one point or multiple points.

[0048] The lower wall 53R extends from or near the lower end of the front wall 51R toward the rear of the vehicle. The lower wall 53R is located lower than the mounting point P of the fastener. The lower wall 53R is located lower than the upper wall 52R and is positioned opposite the upper wall 52R in the vertical direction. The front end 53aR of the lower wall 53R is located in contact with or near the inclined floor surface 32 or the first floor surface 31. When the front end 53aR of the lower wall 53R is in contact with or near the inclined floor surface 32 but not with or near the first floor surface 31, the front end 53aR of the lower wall 53R bends downward. The rear end 53bR of the lower wall 53R is configured to overlap the bottom wall 41 of the transverse member 40 from below. The reinforcing member 50R is fixed to the bottom wall 41 of the transverse member 40 at the lower wall 53R by spot welding or the like. The fixing W2R of the lower wall 53R and the bottom wall 41 can be at only one location or at multiple locations in the left-right direction of the vehicle (three locations in the example of the present invention).

[0049] like Figure 5As shown, the right wall 54R and the left wall 55R are positioned opposite each other in the left-right direction of the vehicle. The right wall 54R extends from or near the right side end of the front wall 51R toward the rear of the vehicle and extends upward from the right side end of the lower wall 53R. The left wall 55R extends from or near the left side end of the front wall 51R toward the rear of the vehicle and extends upward from the left side end of the lower wall 53R. When viewed from the left-right direction of the vehicle, the right wall 54R and the left wall 55R are located higher than the lower wall 53R, further rearward than the floor slope surface 32 of the floor panel 30, and further forward than the front side wall 42 of the transverse member 40.

[0050] The upper side of the right wall 54R and the end 54aR on the front side of the vehicle bend to the right of the vehicle. The end 54aR of the right wall 54R has a right extension 54a1R extending to the right of the vehicle at a portion in the vehicle's longitudinal direction. The reinforcing member 50R is fixed to the front flange 44 of the transverse member 40 at this right extension 54a1R by spot welding or the like. The upper side of the left wall 55R and the end 55aR on the front side of the vehicle bend to the left of the vehicle. The end 55aR of the left wall 55R has a left extension 55a1R extending to the left of the vehicle at a portion in the vehicle's longitudinal direction. The reinforcing member 50R is fixed to the front flange 44 of the transverse member 40 at this left extension 55a1R by spot welding or the like. The fixing W3R of the right extension 54a1R to the front flange 44 and the fixing W4R of the left extension 55a1R to the front flange 44 can be at one location or multiple locations.

[0051] The end 54aR of the right wall 54R has a second right extension 54a2R extending to the right side of the vehicle at a position closer to the front of the vehicle than the right extension 54a1R. A reinforcing member 50R is fixed to the floor slope portion 32 or the second floor portion 33 of the floor panel 30 at this second right extension 54a2R by spot welding or the like. The end 55aR of the left wall 55R has a second left extension 55a2R extending to the left side of the vehicle at a position closer to the front of the vehicle than the left extension 55a1R. A reinforcing member 50R is fixed to the floor slope portion 32 or the second floor portion 33 of the floor panel 30 at this second left extension 55a2R by spot welding or the like. The fixing W5R between the second right extension 54a2R and the floor panel 30, and the fixing W6R between the second left extension 55a2R and the floor panel 30, can each be at one location or multiple locations.

[0052] The rear end 54bR of the right wall 54R bends to the right of the vehicle. The rear end 54bR of the right wall 54R is located in contact with or close to the front sidewall 42 of the transverse member 40. The rear end 55bR of the left wall 55R bends to the left of the vehicle. The rear end 55bR of the left wall 55R is located in contact with or close to the front sidewall 42 of the transverse member 40.

[0053] The lower wall 53R, right wall 54R, and left wall 55R cover the retainer mounting bolts 60 and welding nuts 61 from below and in the left-right direction of the vehicle. At least one through-hole 53cR is formed in the lower wall 53R. Alternatively, in the example shown, two through-holes 53cR are shown in the left-right direction of the vehicle. The through-holes 53cR are designed to allow the use of a welding torch G even when the reinforcement 50R has the lower wall 53R, right wall 54R, and left wall 55R. Figure 7 It is installed for fixing (welding) the front flange 44 of the transverse member 40 to the reinforcing member 50R and / or the floor panel 30. Additionally, in Figure 7 In the illustration, to clearly depict the fixed operation using the welding torch G, the reinforcing member 50R is not shown, but the reinforcing member 50L is shown. Figure 8 As shown, after the fixing (welding) work, in order to prevent water from outside the vehicle from seeping into the upper side of the lower wall 53R through the working hole 53cR, the working hole 53cR is sealed by a cover 70 made of a protective hole ring, etc.

[0054] A sealing material 80 extending continuously throughout the entire circumference is disposed between the lower wall 53R, right wall 54R, and left wall 55R and the floor panel 30, and between the lower wall 53R, right wall 54R, and left wall 55R and the transverse member 40. The sealing material 80 is configured to prevent water from outside the vehicle from seeping into the upper side of the lower wall 53R from between the reinforcing member 50R and the floor panel 30, and between the reinforcing member 50R and the transverse member 40.

[0055] The reinforcing member 50R can be a single component or multiple components. Furthermore, in the illustrated example of this invention, the reinforcing member 50R is shown as a two-component structure consisting of a first component 50aR and a second component 50bR.

[0056] like Figure 5As shown, the first part 50aR and the second part 50bR are stamped sheet metal parts. The first part 50aR constitutes the front wall 51R and the upper wall 52R of the reinforcing member 50R. The second part 50bR constitutes the lower wall 53R, the right wall 54R, and the left wall 55R of the reinforcing member 50R. The first part 50aR has a first rearward extension 50a1R extending from the lower end of the portion constituting the front wall 51R toward the rear of the vehicle, and a second rearward extension 50a2R extending from the respective ends of the right and left sides of the portion constituting the front wall 51R toward the rear of the vehicle. The first part 50aR is fixed to the second part 50bR at the first rearward extension 50a1R and the second rearward extension 50a2R by spot welding or the like. The fixing of the first rearward extension 50a1R and the second part 50bR can be at one point or multiple points. The fixing W8R of the second rear extension 50a2R and the second part 50bR can be at one location or at multiple locations.

[0057] As mentioned above, the second part 50bR constitutes the lower wall 53R, right wall 54R, and left wall 55R of the reinforcing member 50R. Furthermore, a sealing material 80 extending continuously throughout the entire circumference is disposed between the lower wall 53R, right wall 54R, and left wall 55R and the floor panel 30, and between the lower wall 53R, right wall 54R, and left wall 55R and the transverse member 40. Figure 8 Therefore, the sealing material 80 is continuously applied around the entire circumference of the edge of the second part 50bR, thereby sealing the second part 50bR with the floor panel 30 and the transverse member 40.

[0058] Next, the functions and effects of the embodiments of the present invention will be explained.

[0059] (A) The reinforcing member 50R is fixed to the lateral member 40 at a position higher than the anchor mounting point P, and also fixed to the lateral member 40 at a position lower than the anchor mounting point P. Therefore, in the event of a frontal collision, the seatbelt retainer 20 has an input F (towards the front of the vehicle) Figure 1 When a tensile load is applied to the floor panel 30 and the reinforcement 50R towards the front of the vehicle, the load can be transferred to the transverse member 40 via two paths compared to the fixing point P: one through the upper side and one through the lower side. Figure 1 (Arrows marked F1 and F2). That is, the load can be distributed and transferred to the transverse member 40. Therefore, deformation of the stiffener 50R and the floor panel 30 can be suppressed. As a result, there is no need for a significant increase in the size of the stiffener 50R. In addition, there is no need to set a weld in the floor panel 30 to suppress wrinkles, and it is possible to prevent the formability of the floor panel 30 from deteriorating or the shape from being restricted by setting such a weld.

[0060] (B) The reinforcing member 50R is fixed together with the front flange 44 of the transverse member 40 located on the upper side and rear side of the vehicle compared to the mounting point P of the retainer, and is fixed together with the bottom wall 41 of the transverse member 40 located on the lower side and rear side of the vehicle compared to the mounting point P of the retainer. Therefore, the reinforcing member 50R can be fixed together with the transverse member 40 at both the upper side and the lower side of the mounting point P of the retainer.

[0061] (C) The reinforcing member 50R has a front wall 51R, an upper wall 52R, and a lower wall 53R. It is fixed to the seat belt fastener 20 together with the floor panel 30 at the front wall 51R, fixed to the front flange 44 of the transverse member 40 at the upper wall 52R, and fixed to the bottom wall 41 of the transverse member 40 at the lower wall 53R. Therefore, the reinforcing member 50R can be fixed to the transverse member 40 at both the upper and lower positions compared to the fastener mounting point P.

[0062] (D) The reinforcing member 50R has a front wall 51R, an upper wall 52R, and a lower wall 53R. It is fixed to the seatbelt fastener 20 along with the floor panel 30 at the front wall 51R, fixed to the front flange 44 of the transverse member 40 at the upper wall 52R, and fixed to the bottom wall 41 of the transverse member 40 at the lower wall 53R. Therefore, it can transfer the load not only from the reinforcing member 50R to the front flange 44 of the transverse member 40, but also to the bottom wall 41. Thus, the reinforcing ribs connecting the front flange 44 and the rear flange 45 of the transverse member 40 are not required, enabling a lightweight mounting structure 10.

[0063] (E) A working hole 53cR is formed through the lower wall 53R of the reinforcing member 50R. Therefore, even when the reinforcing member 53 has a lower wall 53R, during the fixing (welding) operation of the front flange 44 of the transverse member 40 to the upper wall 52R of the reinforcing member 50R and / or the floor panel 30, the welding torch G can be made to... Figure 7 It approaches the fixed position through the working hole 53cR.

[0064] (F) Working hole 53cR cover 70 ( Figure 8 The seal prevents water from outside the vehicle from seeping into the upper side of the lower wall 53R through the working hole 53cR after the front flange 44 of the transverse member 40 is fixed (welded) to the upper wall 52R of the reinforcement 50R and / or the floor panel 30. Therefore, it also prevents water from outside the vehicle from seeping into the passenger compartment through the hole through which the mounting bolts 60 are inserted.

[0065] (G) The lower wall 53R, right wall 54R, and left wall 55R of the reinforcing member 50R cover the fixing bolt 60 from the bottom and from the left and right directions of the vehicle. Therefore, it is possible to prevent water from outside the vehicle from entering the passenger compartment from the bottom and from the left and right directions of the vehicle through the holes through which the fixing bolt 60 is inserted.

[0066] (H) The reinforcing member 50R is also fixed to the front flange 44 of the transverse member 40 at the right wall 54R and the left wall 55R. Therefore, compared with the case where the reinforcing member 50R is not fixed to the front flange 44 of the transverse member 40 at the right wall 54R and the left wall 55R, the reinforcing member 50R can be more firmly fixed to the front flange 44 of the transverse member 40.

[0067] (I) Figure 9 A comparative example of an embodiment of the present invention, different from the embodiment of the present invention, is shown. In the comparative example, a case is shown where the lower wall 53R, right wall 54R, and left wall 55R are not provided in the reinforcing member 50R of the embodiment of the present invention. In the comparative example, since the other structures are the same as those in the embodiment of the present invention, the same symbols are described with an apostrophe "'" (apostrophe) added to the components corresponding to those in the embodiment of the present invention.

[0068] In the comparative example, since the reinforcing member 50R' differs from the reinforcing member 50R in the embodiment of the present invention and does not have a lower wall 53R, a right wall 54R, and a left wall 55R, in order to prevent water from outside the vehicle from seeping into the passenger compartment through the holes through which the mounting bolts 60' are inserted, it is necessary to apply sealing material to the welded nut 61' fixed to the reinforcing member 50R' using a sealing gun 90'. However, depending on the positional relationship between the transverse member 40' and the welded nut 61', the sealing gun 90' may come into contact with the transverse member 40', making it difficult to apply the sealing material using the sealing gun 90'. To suppress this possibility, the position of the welded nut 61', the shape of the transverse member 40', and other structural features may be limited.

[0069] However, in an embodiment of the present invention, the sealing material 80 is disposed between the lower wall 53R, right wall 54R, and left wall 55R and the floor panel 30, and between the lower wall 53R, right wall 54R, and left wall 55R and the transverse member 40. Therefore, it is possible to prevent water from outside the vehicle from seeping into the upper side of the lower wall 53R. Therefore, it is possible to prevent water from outside the vehicle from seeping into the passenger compartment through the holes through which the mounting bolts 60 are inserted.

[0070] In this structure, since there is no need to apply sealing material to the weld nut 61, it is possible to suppress situations where the position of the weld nut 61, the shape of the transverse member 40, etc. (structure) are restricted in order to apply sealing material 80.

Claims

1. A seat belt anchor mounting portion structure characterized by comprising: Possessing: a floor panel on which a seat belt anchor is mounted; a cross member configured on the lower side of the floor panel; and a reinforcement configured on the lower side of the floor panel and fixed with the seat belt anchor together with the floor panel, the reinforcement is fixed with the cross member together at a position on the upper side compared with a mounting point of the seat belt anchor on the floor panel, i.e., an anchor mounting point, and is fixed with the cross member together at a position on the lower side compared with the anchor mounting point, the reinforcement has a front wall, an upper wall, and a lower wall opposed to the upper wall in the vertical direction, the reinforcement is fixed with the seat belt anchor together at the front wall with the floor panel, and is fixed with the front flange of the cross member together at the upper wall, and is fixed with the bottom wall of the cross member together at the lower wall, a first hole for fixing the reinforcement with the seat belt anchor together with the floor panel, and a second hole for fixing the reinforcement with a seat rail together with the floor panel are formed on the front wall.

2. The seat belt anchor mounting portion structure according to claim 1, wherein the floor panel has: a first floor surface portion; a floor inclined surface portion rising toward the vehicle rear side and the upper side from the vehicle rear side end portion of the first floor surface portion; a second floor surface portion extending toward the vehicle rear side from the upper end portion of the floor inclined surface portion, the seat belt anchor is mounted on the floor inclined surface portion, the cross member has: a bottom wall on the lower side and the vehicle rear side compared with the anchor mounting point; a front side wall extending toward the upper side from the vehicle front side end portion of the bottom wall; a rear side wall extending toward the upper side from the vehicle rear side end portion of the bottom wall; a front flange extending toward the vehicle front side from the upper end portion of the front side wall and on the upper side and the vehicle rear side compared with the anchor mounting point; a rear flange extending toward the vehicle rear side from the upper end portion of the rear side wall, the cross member is fixed from the lower side with the second floor surface portion at the front flange and the rear flange, the reinforcement is fixed with the front flange of the cross member and is fixed with the bottom wall of the cross member.

3. The seat belt anchor mounting portion structure according to claim 2, wherein a work hole is formed on the lower wall of the reinforcement and penetrates the lower wall, and the work hole is covered with a cover plug.

4. The seat belt anchor mounting portion structure according to claim 2, wherein the floor panel and the reinforcement are fixed with the seat belt anchor using an anchor mounting bolt that passes through the anchor mounting point, the reinforcement further has a right wall and a left wall, the lower wall, the right wall, and the left wall of the reinforcement cover the anchor mounting bolt from the lower side and the vehicle left-right direction.

5. The seat belt anchor mounting portion structure according to claim 4, wherein the reinforcement is also fixed with the front flange of the cross member at the right wall and the left wall.

6. The seat belt anchor mounting portion structure according to claim 4, wherein Also included is a sealing material that extends continuously around the entire periphery, The sealing material is disposed between the lower, right and left walls of the reinforcement and the floor panel, and between the lower, right and left walls of the reinforcement and the transverse member.

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