JPH0321317Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to a seat belt anchor device, and more particularly to a seat belt anchor device in a pillar portion of an automobile.

(Prior Art) In the presently widely used automobile seat belt, one end is attached to the upper part of a column member on the side of the vehicle body via an anchor, and the other end is attached to a floor member via a retractor. The pillar member has a closed cross-sectional structure in which an inner panel and an outer panel are joined to each other, and a nut plate having a nut is attached therein, and a seat belt anchor is attached to this nut plate. Since the inner panel and the outer panel are made of sheet metal, a stiffener is usually placed between the inner panel and the outer panel for the purpose of reinforcing the nut plate attachment portion and increasing rigidity.

As a conventionally known nut plate, the Jikoko 54
There is a type disclosed in Japanese Patent No. -25768.
This known nut plate has a substantially U-shaped cross section consisting of a base part with a nut attached to its inner surface, and two side pieces bent from both sides of the base part in the direction of the nut side surface. The pieces extend vertically beyond both ends of the base. The nut plate is attached to the column member by welding both sides to the side walls of the outer panel. Due to the presence of both side pieces, the nut plate of this known structure exhibits high rigidity against forces perpendicular to the plane of the base, but the base remains seated against forces parallel to the plane. It has the disadvantage of being easily bent and having relatively low strength.

For this reason, as disclosed in Utility Model Publication No. 56-23189, an outer stiffener and an inner stiffener are provided between the inner panel and the outer panel, and seat belt anchor mounting bolts are welded to the inner stiffener. At the same time, an anchor device has been proposed in which a closed cross section is formed by an inner and an outer stiffener in this portion to strengthen the structure.

On the other hand, the position of the pillar-side anchor of the seat belt differs depending on the sitting height of the occupant. That is, if the anchor position is too low, the shoulder belt will easily come off the shoulder, and if the anchor position is too high, the shoulder belt will come into contact with the occupant's neck, which is undesirable. For this purpose, it is desirable that the anchor position be adjustable up and down, and for this reason, as disclosed in Utility Model Publication No. 59-17318,
A device has been proposed in which an elongated hole extending vertically is provided in the anchor attachment portion of a pillar, and an anchor attachment nut is movable up and down along the elongated hole, thereby making it possible to adjust the vertical position of the anchor attachment portion. However, in this case, there is a problem that the elongated hole is exposed inside the vehicle interior, spoiling the appearance, and there is also a problem that the strength of the anchor attachment portion is likely to be reduced due to the elongated hole.

Based on the above, as a seatbelt anchor device that does not impair strength or appearance and allows the anchor installation position to be adjusted, a stiffener is installed within the closed cross section of the pillar consisting of an inner panel and an outer panel. An anchor device may be considered in which two anchor nuts are attached above and below to a nut plate that is joined to the stiffener to form another closed cross-sectional structure within the closed cross section. When using such an anchor device, the anchor mounting position can be adjusted to two positions (up and down) using the two anchor nuts located above and below, but the nut plate is long vertically due to the two anchor nuts. Therefore, the joint between the stiffener and the nut plate to form the closed cross-sectional structure tends to be a problem in relation to the strength of the closed cross-sectional structure. In other words, it is easy to spot-weld the upper and lower ends of the nut plate to the stiffener to join them together, but as it is, the problem is that the strength of the middle part of the two upper and lower anchor nuts is weakened because the nut plate is long. There is.

(Purpose of the invention) The present invention was made in view of the above-mentioned circumstances, and its purpose is to provide a seat belt anchor device for an automobile that is capable of adjusting the anchor position in the vertical direction and has sufficient strength. It is something to do.

(Structure of the invention) The seatbelt anchor device of the invention has a "C"-shaped stiffener that extends vertically and has a "U"-shaped horizontal cross section within the closed cross-section of a pillar that extends vertically and is made up of an inner panel and an outer panel. An anchor nut plate is fixed to the open side of the stiffener, and two bolts located above and below are placed on the surface of this plate facing the stiffener. A number of anchor nuts are fixedly installed, and flange portions extending vertically are formed on both sides of the anchor nut plate at intermediate positions of these anchor nuts, and the flange portions are brought into contact with the inner surfaces of the opposing side walls of the stiffener. It is characterized in that it has a closed cross-sectional structure, and the anchor nut plate and the stiffener are spot welded at this abutting portion.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of the anchor nut plate 1.
FIG. 2 is a perspective view showing the anchor nut plate 1 attached to the pillar of an automobile, and FIG. 3 is a sectional view of the pillar along arrow A-A in FIG. This will be explained using them together.

The anchor nut plate 1 has a base plate 2, and on its outer surface (the surface facing the stiffener 13 facing toward the outer panel when installed in the pillar), there are two anchor nuts 3 located above and below.
a and 3b are fixed. Both ends of the base plate 2 are bent outward to form a right flange 4 and a left flange 5, respectively. upper and lower flanges 5a and 5c are formed. Furthermore, the base of the center part of the right flange 4 and the center flange 5b
The base bulges outward and has a chamfered part 4 on the inner side.
a, 5d are formed. Furthermore, two leg portions 6a and 6b, which are bent and formed substantially at right angles to the substrate 2, extend outward from the upper and lower ends of the substrate 2. From the left end of the legs 6a, 6b, there are two first joints 7a, 7 extending substantially parallel to the right flange 4 and away from each other in opposite directions.
b is extended. Further, two second joint portions 8a, 8b are connected from the ends of the legs 6a, 6b opposite to the substrate 2 to extend substantially parallel to the substrate 2 and away from each other in opposite directions. It is extending. Further, nuts 3a for both anchors on the board 2,
3b is provided with an opening 9 for a spot gun for spot welding, which will be described later, and the edge of this opening 9 is bent outward over the entire circumference to form an edge portion 9a. We are working to strengthen the

This anchor nut plate 1 is installed inside the pillar part, and as shown in FIG. It is constructed by joining the stiffener 13. Anchor nut plate 1
is arranged between the inner panel 11 of the pillar portion 10 and the stiffener 13 such that the outer surface of the substrate 2 (the surface to which the anchor nuts 3a, 3b are fixed) faces the stiffener 13. At this time, the anchor nut plate 1 is attached to the open side (inner plate side) of the stiffener 13 having a "U"-shaped horizontal cross section, and in this state, the right flange 4 is attached to the right side wall 13c of the stiffener 13. The first joint portions 7a and 7b abut on the inner surface of the left side wall 13a of the stiffener 13,
The second joint portions 8a and 8b are the outer wall 1 of the stiffener 13.
It comes into contact with the inner surface of 3b. This contact portion, that is, the upper and lower ends of the right flange 4, the first joint portion 7
a, 7b and second joint portions 8a, 8b are spot welded to the stiffener 13, and the anchor nut plate 1 is joined to the stiffener 13. In addition,
At this time, the inner surface of the base plate 2 of the anchor nut plate 1 is brought into contact with the inner plate 2.

In this way, the anchor nut plate 1 is attached so as to form a closed cross-sectional structure with the stiffener 13. However, in the anchor device of the present invention, the anchor nut can be moved up and down to make it possible to adjust the anchor attachment position. Since two anchor nuts are provided, the anchor nut plate 1 becomes vertically long, and if only the upper and lower ends of the anchor nut plate are joined, the strength at the intermediate position between both anchor nuts 3a and 3b may not be sufficient. . Therefore, the present invention aims to strengthen this intermediate position, and this will be explained below.

When the anchor nut plate 1 is attached to the stiffener 13, the anchor nut plate 1
The center flange 5b of the left flange 5 is in contact with the inner surface of the left side wall 13a of the stiffener 13, and the anchor nut plate 1 and the stiffener 13 are spot welded at this contact portion. During this spot welding, a spot gun can be inserted through the opening 9.
Similarly, the anchor nut plate 1 and the stiffener 13 are spot welded at the center of the right flange 4 (at the intermediate position between the two anchor nuts 3a, 3b), so that both the anchor nuts 3a, 3b are spot welded. At the intermediate position of 3b, the anchor nut plate 1 and the stiffener 13 form a closed cross-sectional structure, and this portion is reinforced. For this reason, both of the anchor nuts 3a and 3b are strengthened by being joined to the stiffener 13 in the vicinity of their upper and lower positions.
It has sufficient strength even when using a and 3b.

(Effects of the invention) As explained above, according to the invention, a stiffener is disposed within the closed section of the pillar consisting of an inner panel and an outer panel, and two anchor nuts located above and below are fixed to this stiffener. The seat belt anchor device is constructed by joining and attaching the anchor nut plates at the upper and lower ends of the anchor nut plate and at the middle position of the anchor nut at the upper and lower ends of the anchor nut plate and at the middle position of the anchor nut. The position of the anchor can be adjusted, and the strength of the anchor device can be made sufficient. Furthermore, since the anchor nut plate and the stiffener are all joined by spot welding, they can be joined easily and reliably.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an anchor nut plate used in the present invention, FIG. 2 is a perspective view showing a seat belt anchor device according to the present invention, and FIG. 3 is a perspective view showing the seat belt anchor device according to the present invention. FIG. 3 is a cross-sectional view showing the seat belt anchor device. 1... Anchor nut plate, 2... Board,
3a, 3b... Anchor nut, 4... Right flange, 5... Left flange, 9... Opening for spot gun, 10... Pillar portion, 11... Inner panel, 12... Outer panel, 13... Stiffener .

Claims (1)

[Scope of Claim for Utility Model Registration] A pillar formed by an inner panel and an outer panel forming a closed section structure extending in the vertical direction of the vehicle body, and a pillar extending vertically within the closed section of the pillar and opening toward the inner panel. It consists of a stiffener having a U-shaped horizontal cross section, and an anchor nut plate fixed to the open side of the stiffener, and located above and below the surface of the anchor nut plate on the side facing the stiffener. Two anchor nuts are fixedly installed, and vertically extending flange portions formed on both sides of the anchor nut plate are brought into contact with the inner surfaces of the opposing side walls of the stiffener at an intermediate position between these two nuts. While forming a closed cross-sectional structure, the anchor nut plate and the stiffener are spot welded at the relevant joint, and an opening for a spot gun is provided in at least one of the anchor nut plate and the stiffener near the relevant joint. An automobile seat belt anchor device characterized by: