JP3324453B2 - Seat belt anchor attachment structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mounting structure for a seat belt anchor for fixing a base end of a seat belt used for a rear seat of an automobile.

[0002]

2. Description of the Related Art A large load is applied to a seat belt anchor for fixing a base end of an automobile seat belt to a vehicle body by pulling the seat belt. It is fixed to. As shown in FIG. 3, the seat belt anchor of the seat belt of the rear seat S1 is fixed to a closed cross section C formed between the quarter panel 1 and the wheel house B at the lower rear end of the entrance A of the vehicle body. .

As shown in FIGS. 4 and 5, at the rear of the vehicle, an outer peripheral flange 22 of a wheel house outer panel (hereinafter referred to as an outer panel) 2 and an outer peripheral flange 31 of a wheel house inner panel (hereinafter referred to as an inner panel) 3. And an arc-shaped wheel house B, which is formed by joining the two, is covered with a quarter panel 1. The arch-shaped lower edge of the quarter panel 1 is joined to the arc-shaped outer edge 23 of the outer panel 2 so as to surround the outer edge 23. The lower part of the front end of the quarter panel 1 is formed on the outer peripheral flange 2 of the outer panel 2 which projects further forward than the outer peripheral flange 31 of the inner panel 3.
2 is formed so as to wrap it around the lower edge of the vehicle entrance A to form an opening edge below the rear end of the vehicle entrance A.
Inside the panel 1 and the outer panel 2 with the closed cross section C
Are formed.

In the closed section C, a thick plate anchor reinforcement 5A is overlapped and fixed by welding along the outer peripheral flange 22 of the outer panel 2. A bolt hole 6 is formed through the outer peripheral flange 22 of the outer panel 2 and the anchor reinforcement 5A, and the anchor hole 5 of the bolt hole 6 is formed.
A weld nut 61 is provided on the A side. As shown in FIG. 5, the seat belt anchor 7 is disposed at a position corresponding to the anchor reinforcement 5A from the surface of the trim board 8 covering the side wall of the vehicle cabin, and the anchor bolt 71 is welded to the bolt hole 6. It is fixed by tightening it in a nut 61. Further, the seat belt anchor 7 is covered with a cover 72. Since the seat belt anchor 7 is fixed substantially in the shearing direction with respect to the tensile load applied thereto, the seat belt anchor 7 has high strength with respect to the load.
H is a door for opening and closing the entrance A, 91 is a floor panel, T is
Is a tire.

[0005]

However, in the above-described conventional structure, the closed cross section C formed by the quarter panel 1 and the outer panel 2 at the lower rear edge of the entrance / exit A has the seat belt anchor 7 mounted therein. Since the anchor reinforcement 5A for reinforcing the portion is provided, the width in the front-rear direction is increased. That is, the overhang dimension G from the door parting line E of the entrance / exit A to the outer edge F of the opening.
(FIG. 5) becomes longer, and the lower part of the entrance / exit A becomes narrower as the dimension G becomes longer. When the second rear seat S2 is installed behind the first rear seat S1 as in the vehicle shown in FIG. 3 when the passenger sitting on the second rear seat S2 gets on and off the lower part of the entrance A, Since the first rear seat S1 is moved forward or upright and pivoted forward and gets on and off from the rear, the provision of the anchor reinforcement 5A further narrows the originally narrow entrance and exit, resulting in poor getting on and off. Therefore, an object of the present invention is to realize a seat belt anchor attachment portion structure that can secure a wide entrance and exit and that can sufficiently secure the attachment strength of the seat belt anchor.

[0006]

SUMMARY OF THE INVENTION The present invention provides a seat belt anchor (7) for a seat belt for a rear seat of an automobile.
At the seat belt anchor attachment portion for fixing to the side wall of the cabin reinforced by reinforcing the anchor reinforcement (5) , the outer peripheral flange of the wheel house outer panel (2) is mounted.
Outside the flange (22) and the wheel house inner panel (3)
The tire (T) is covered on the lower end of the front part of the arched wheel house (B) formed by joining the peripheral flange (31).
Cormorants and the inner surface of the wheel house outer panel (2), hung provided me wheel house reinforcement (4) between the inner surface of the wheel house inner panel (3), the reinforcement (4) and the wheel house outer panel (2 ) And wheel house inner panel
(3) Closed section inside the wheel house (B) with (D)
Is formed, and an anchor reinforcement (5) is overlap-welded to the wheel house inner panel (3) in the closed section (D) , and a seat belt anchor (7) is fixed to the overlap portion (claim 1). Since the mounting position of the seatbelt anchor is moved rearward by using the space in the wheel house, a wide entrance and exit can be secured.

[0007] The above-mentioned anchor reinforcement (5) having an L-shaped cross section is superimposed on the outer peripheral portion of the front lower end of the inner panel (3) having a substantially L-shaped cross section, and one end of the anchor reinforcement (5) is connected to the inner panel (3). The outer rim of the franc
Peripheral flanges of the jig (31) and the outer panel (2)
Welded together with (22) and uncarried reinforcement
The other end of (5) is integrally welded to the outer peripheral edge of the wheel house reinforcement and the inner panel, and
Eel House Reinforcement (4) and Wheel
House outer panel (2) and wheel house inner napa
The above-mentioned closed cross section is formed by the outer peripheral edge flange (31) of the flannel (3).
(D), and said outer peripheral flank within said closed section (D).
Di (31) and the above-mentioned anchor reinforcement (5)
The above-mentioned seat belt anchor (7) is fixed to the overlapping portion (claim 2). The mounting portion of the seat belt anchor is moved rearward, and high strength is secured.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS As shown in FIG. 3, a quarter panel 1 forming a rear side surface of a vehicle has a lower end covering a wheel house B, and a front edge forming an opening edge of a doorway A. S1 is the first rear seat installed in the vehicle interior, S2
Is a second rear seat installed behind the first rear seat S1. Further, a seat belt anchor attachment portion of the seat belt for the first rear seat S1 is formed in a lower portion of the front end of the wheel house B.

The structure of the seat belt anchor mounting portion will be described with reference to FIGS. 1 and 2. FIG. 1 is a perspective view of the seatbelt attachment portion from the vehicle interior side, and FIG. 2 is a cross-sectional view taken along line II-II of FIG. As shown in the figure, the wheel house B is formed in an arc shape as a whole in which the outer peripheral flange 22 of the outer panel 2 and the outer peripheral flange 31 of the inner panel 3 which are opposed to each other are joined.

At the front end of the wheel house B, the front end of the outer panel 2 is formed with an inclined portion 21 gently bent obliquely forward on the outer peripheral side of the main body 20 covering the outer half of the peripheral surface of the tire T. Further, an outer peripheral flange 22 extending forward from the inclined portion 21 is formed. Further, the outer end 23 of the outer panel 2 is formed in a folded shape with an edge directed toward the inside of the wheel house B.
On the other hand, at the front end of the inner panel 3, the outer peripheral edge of the main body 30 that covers the inner half of the peripheral surface of the tire T has a substantially L-shaped cross section, and an outer peripheral flange 31 extending forward is formed.
Then, the outer panel 2 and the inner panel 3 are attached to the base end of the outer peripheral edge flange 22 of the outer panel 2 in a state where the main body 20 of the outer panel 2 is shifted to a position forward of the main body 30 of the inner panel 3. The edge of the outer peripheral flange 31 is overlapped and welded so as to sandwich the anchor reinforcement 5 described later, and the inner panel 3 projects in the wheel house B.

In the wheel house B, the inner panel 3
An anchor reinforcement 5 is provided along the outer peripheral edge flange 31 of the main body. Anchorage Reinforcement 5
Is a thick plate of L-shaped corresponding to the inner panel 3, superimposed along the inner panel 3, is welded together sandwiches the front end at the outer edge flanges 22 and 31 of the outer panel 2 and inner panel 3, The rear end is overlapped and welded to the main body 30 of the inner panel 3. Also,
Outer peripheral flange 31 of inner panel 3 and overlap with this
A bolt hole 6 that penetrates both of them is formed in the anchor reinforcement 5, and a weld nut 61 is provided in the bolt hole 6 on the anchor reinforcement 5 side.

Further, in the wheel house B, a tire T
The wheel house reinforcement 4 is provided so as to extend between the inner surface of the main body 20 of the outer panel 2 facing the peripheral surface of the inner panel 3 and the inner surface of the main body 30 of the inner panel 3. The wheel house reinforcement 4 is a plate body, one edge of which is overlapped and welded to the main body portion 20 of the outer panel 2, and the other edge is joined to the rear end of the anchor reinforcement 5 of the inner panel 3. Overlaid on the body 30 and welded , inside the wheel house B
, Inner panel 3 with wheel house reinforcement 4 and anchor reinforcement 5
Outer peripheral flange 31 and inclined portion 2 of outer panel 2
1 form a closed section D having a substantially triangular cross section.

On the other hand, the lower end of the front part of the quarter panel 1
Edges are overlapped and welded together so that the outer end 11 wraps the outer end 23 of the outer panel 2.
The quarter panel 1 bulges forward from the outer end 11 in a stepped manner, and the inner end 12 forming the opening edge of the entrance A is overlapped and welded to the edge of the outer peripheral flange 22 of the outer panel 2 to form a quarter panel. 1 and the outer panel 2 form a closed cross section C. A molding 13 (FIG. 2) is placed over the edge of the overlapped joint between the inner end 12 of the quarter panel 1 and the outer peripheral flange 22 of the outer panel 2.

Further, as shown in FIG. 1, the front lower end of the quarter panel 1 extends forward, and the extending portion 14 is a component of the vehicle cabin floor 9 and is closed by a floor side panel 90 extending in the front-rear direction. And is connected to the side rail K (FIG. 3). The rear part of the floor side panel 90 is connected along the inner panel 3 which forms the side wall of the passenger compartment. In the figure, 9
1 is a floor panel.

In order to mount the seat belt anchor 7, as shown in FIG. 2, the seat belt anchor 7 is located at a position corresponding to the anchor reinforcement 5 provided on the outer peripheral flange 31 of the inner panel 3 from the surface of the trim board 8. And the anchor bolt 71 is tightened and fixed to the weld nut 61 of the bolt hole 6. Further, the seat belt anchor 7 is covered with a cover 72.

According to the above embodiment , after the entrance A
At the lower edge, the anchor reinforcement 5 was moved into the wheel house B, and the mounting portion of the seat belt anchor 7 was moved rearward, so that the outer peripheral flange 22 of the outer panel 2 projecting toward the entrance A side. Dimensions can be set short.
Accordingly, the overhang dimension G from the parting line E to the outer edge F of the opening is reduced, and the lower portion of the entrance A is widened, so that the occupant sitting on the second rear seat S2 (FIG. 3) can easily get on and off. The movement of the anchor reinforcement 5 into the wheel house B is set within a range that does not interfere with the tire T bound and rebounded when the vehicle is running. Wheel house reinforcement 4 in wheel house B
And the closed cross section D was formed along the closed cross section C,
Strength is maintained. In addition, the seat belt anchor 7 Sea
It is fixed in the shearing direction along the direction of the tensile load from the belt , and its mounting part is a closed section D having high rigidity, so that the mounting strength against the tensile load is sufficiently ensured. Although the anchor reinforcement 5 may be formed in a flat plate shape, the strength can be improved by forming it into an L shape along the bent portion of the inner panel 3.

[0017]

According to the present invention, the mounting strength of the seat belt anchor can be sufficiently ensured, and the lower portion of the entrance / exit can be secured widely to improve the occupant's getting on and off.

[Brief description of the drawings]

FIG. 1 is a perspective view of an essential part showing a seat belt anchor attachment portion structure of the present invention.

FIG. 2 is a sectional view taken along a line II-II in FIG.

FIG. 3 is a side view showing a rear side portion of the vehicle.

FIG. 4 is a perspective view of an essential part showing a conventional seat belt anchor attachment structure.

FIG. 5 is a sectional view taken along a line VV of FIG. 4;

[Explanation of symbols]

B Wheel House D Closed Section 2 Wheel House Outer Panel 22 Outer Edge Flange 3 Wheel House Inner Panel 31 Outer Edge Flange 4 Wheel House Reinforcement 5 Anchor Reinforcement 7 Seat Belt Anchor

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B62D 25/04 B60R 22/24

Claims (2)

(57) [Claims] 1. A seat belt anchor of the rear seat for a seat belt of a motor vehicle (7), the seat belt anchor attachment portion for fixing to the side wall of the vehicle compartment reinforced by polymerizing an anchor reinforcement (5), the wheel house outer panel ( The tire (T) is attached to the lower end of the front part of the arched wheel house (B) formed by joining the outer peripheral flange (22) of ( 2) and the outer peripheral flange (31) of the wheel house inner panel (3). The inner surface of the wheel house outer panel (2) to be covered and the wheel house inner panel
(3) the wheel house reinforcement (4) which hung between the inner surface are provided for, the reinforcement (4) and the wheel house outer panel (2) and wheel house out with the wheel house inner panel (3)
Inside to form closed cross section (D) is in (B), the closed cross-section (D)
An anchor reinforcement (5) is superposed and welded to the wheel house inner panel (3) inside, and a seat belt anchor (7) is fixed to the superposed portion. 2. An anchor reinforcement (5) having an L-shaped cross section is superimposed on an outer peripheral portion of a front lower end of a wheel house inner panel (3) having a substantially L-shaped cross section, and one end of the anchor reinforcement (5) is wheeled. the outer peripheral edge flanges of the outer peripheral edge flange of the house inner panel (3) (31) and the wheel house outer panel (2) (2
Weld together with 2) to make an anchor reinforcement
The other end of (5) is welded integrally with the wheel house reinforcement (4) and the wheel house inner panel (3) to form the wheel house reinforcement.
(4), wheel house outer panel (2),
Outer peripheral flange (3)
1) to form the closed section (D), and within the closed section (D).
Of the outer peripheral flange (31) of the
The seat belt anchor in the overlapping part with the
The seat belt anchor attachment structure according to claim 1 , wherein (7) is fixed .