JPS602998Y2 - Automobile seat belt anchor attachment structure - Google Patents

Description

[Detailed description of the invention] This invention is based on the structure of the seat belt anchor attachment part of an automobile.
In particular, the present invention relates to a structure for attaching a seat belt anchor to a column member of an automobile.

The conventional mounting structure for seat belts on pillar members such as leaflets is
As described in Japanese Utility Model Publication No. 54-25768, a column member that forms a closed cross section by joining an inner panel and an outer panel has a through hole and a nut is provided on the back surface corresponding to the through hole. A nut plate having a U-shaped cross section is provided, which is composed of a fixed base and both side pieces extending from both ends of the base substantially perpendicularly to the base, and the length of both sides of the nut plate in the axial direction is set as follows. It is made longer than the length of the base in the axial direction, and the upper and lower ends of both sides in the axial direction are made to protrude, and the protrusions on both sides are fixed to the inner surface of the outer panel by spot welding, and further, the protrusions correspond to the above-mentioned through holes. It has been proposed that an inner panel having a mounting hole is fixed to an outer panel, and a seat belt anchor bolt is bolted to the nut.

With this conventional seatbelt anchor mounting structure, problems such as the inner panel peeling off from the outer panel when a high load is applied to the seatbelt during a collision have been resolved, but the load caused by the seatbelt is Since bending and torsion forces act on the inner panel, which is the peripheral edge of the structure, there is a problem that the closed cross-section structure does not work effectively in terms of strength.

Other conventional seatbelt mounting structures on pillar members include a U-shaped inner hose that connects the inner panel and outer panel inside the closed section of the seatbelt mounting portion of the pillar member where the inner panel and outer panel are joined. It is known that two reinforcements are placed and welded facing each other, or a corrugated reinforcement is placed and welded in contact with the inner panel and the outer panel, and anchor bolts are fixed to each reinforcement and inch panel. It is being

However, even in these structures for attaching seat belts to pillar members, the load from the seat belt acts on part of the side surfaces of the inner panel and outer panel, which are the peripheral edges of the closed section structure, and the load from the seat belt is applied to the closed section structure. There is a problem in that the bending force and torsion force act on the structure, which is disadvantageous in terms of strength.

Furthermore, this mounting structure has the problem that the welded portions between the inner panel, outer panel, and reinforcement tend to be located at a recessed position, making welding work difficult.

The present invention was made in view of the above-mentioned conventional problems,
The purpose of this is to provide a seatbelt anchor attachment structure that has a simple structure and can firmly support a seatbelt, and its structural features include an inner panel and an outer panel. It consists of a column member joined to form a closed cross section, an anchor nut attached to the outer panel side of the inner panel, and a seat belt anchor bolt screwed to the anchor nut, and the seat belt anchor bolt of the inner panel is screwed to the anchor nut. The joint portion is recessed toward the outer panel so as to be located approximately at the center of the closed cross section.

Since the present invention is constructed as described above, the load from the seat belt acts almost on the center of the column member with a closed cross-section structure, and almost no torsional load acts, making the closed cross-section structure of the column member mechanically effective. It has advantages that can be exploited.

Further, the present invention has the advantage that it has a simple structure, does not require welding work in deep positions, and is easy to manufacture.

Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the interior of an automobile 1 includes a center pillar 2 and a capillary 4, and one end of a seat belt 6.8 is attached to a relatively upper portion of these pillars.

The seat belt anchor attachment structure of the first embodiment is similar to that of the second embodiment.
As shown in the figure and Fig. 3, the flange portions 1
A closed cross section 21 is constructed by welding the flange portions 10 and 18 to an inner panel 12 having an inner panel 12 and an outer panel 20 having a first step portion 14, a second step portion 16, and a flange portion 18.

In addition, a pillar reinforcement 24 is provided within the flat section 21.
is arranged, which is approximately flat and has second step portions 1 on both sides.
The seat bolt has a flange portion 22 welded to the seat bolt 6, and a seat bolt mounting bolt hole 26 is provided at an appropriate location.

The bottom of the joint between the inner panel 12 and the anchor bolt contacts the pillar reinforcement 24, and the recess 2 is recessed toward the outer panel so as to be located approximately in the center of the closed section.
8 is provided, and a seat belt mounting bolt hole 28 is provided in the center of the recess 28.

In the above configuration, the seat belt 6.8 is attached to the pillars 2, 4 via the seat belt fitting 30.

The bolt hole 32 of the seat belt fitting 30 is connected to the bolt hole 22 of the pillar reinforcement 24 and the inner panel 1.
The bolt 34 is inserted with the two bolt holes 28 aligned together.

A nut 36 is screwed into the bolt 34, and the seat belt metal 30, pillar reinforcement 24, and inner panel 12 are integrated.

The load of the seat belt 6.8 then acts on approximately the center of the closed section 21 formed by the inner panel 12 and the outer panel 20.

As shown in FIGS. 4 and 5, the seat belt anchor attachment part of the second embodiment is different from the first embodiment in that it has a nut plate 100 instead of the reinforcement, Components that are the same as those in the first embodiment are simply given the same reference numerals and their explanations will be omitted.

The nut plate 100 has a base 106 by fixing nuts 104 corresponding to bolt through holes 102, and a base 106.
and both side pieces 108 extending substantially perpendicularly to the base 106 from both ends of the base 106. Portion 11 protruding from base 106
0 to the second step 16 of the outer panel.

Also in the second embodiment with the above configuration, the nut plate 1
The load of the seat belt attached to 00 is on pillars 2 and 4.
The closed cross-section structure can act effectively in terms of structural mechanics.

In the above embodiment, the seat belt anchor attachment structure of the present invention is applied to the pillar, but the present invention can also be applied to parts with a closed cross-section structure consisting of an inner panel and an outer panel, such as a floor or side rail mount. can.

[Brief explanation of drawings]

Figure 1 is a perspective view of the interior of a car, and Figure 2 is the first part of the invention.
A perspective view of the embodiment, FIG. 3 is a sectional view taken along the line ■-m in FIG. 2, FIG. 4 is a perspective view of the second embodiment, and FIG. FIG. 1... Car, 2... Center pillar 4... Rear pillar, 6, 8... Seat belt, 10... Flange part, 12・・・・・・
... Inner panel, 20 ... Outer panel, 2
1...Closed section, 24...Zeller reinforcement, 30...Seat belt fitting.

Claims (1)

[Scope of utility model registration request] The anchor of the inner panel consists of a column member that forms a closed section by joining an inner panel and an outer panel, an anchor nut attached to the outer panel side of the inner panel, and a seat belt anchor bolt screwed to the anchor nut. A structure for attaching a seat belt anchor for an automobile, characterized in that a joint portion with a bolt is located approximately at the center of the closed cross section.