JP2552326Y2 - Structure of seat belt reinforcement - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat belt reinforcement.

[0002]

2. Description of the Related Art It is well known that a seat belt is the most inexpensive and effective device for protecting an occupant. Seat belts include two-point seat belts, three-point seat belts, and full harness type seat belts.
Combination of two-point belt (waist belt) and shoulder belt 3
As the point-type seat belt, a system in which the webbing of the shoulder belt and the waist belt are continuous has been widespread in order to have excellent occupant protection performance, high practicality, and ease of use.

A three-point seat belt of the type in which the shoulder belt and the waist belt of the front seat are continuous is generally provided with a guide ring having one end attached to a side sill via an anchor and the other end attached to an upper part of a center pillar. Attached to a retractor provided below the center pillar, the vicinity of the waist is detachably connected to a buckle stalk via a buckle. The guide ring is firmly attached by bolts to a seat belt reinforcement which is welded and fixed to a predetermined upper portion in the center pillar.

[0004]

By the way, the center pillar is formed in a box cross-sectional structure by welding flange portions provided on both sides of the center pillar outer and the center pillar liner. There is a structure in which the upper flange is eliminated to show it. However, in the center pillar having such a structure, the strength of the attaching portion is insufficient because the guide ring of the front seat belt is attached to the upper part of the slender body, and the lower part of the thick sectional structure with a flange and the thin sectional structure without a flange are provided. There is a problem in that the strength of the connecting portion is low because the cross section changes rapidly at the connecting portion with the upper portion, and the rigidity of the entire center pillar is low.

The present invention has been made in view of the above points, and is designed to reinforce a center pillar having a slender upper portion to increase the strength of a seat belt attaching portion and increase the rigidity of the entire center pillar. An object of the present invention is to provide a seat belt reinforcement structure.

[0006]

According to the present invention, in order to achieve the above object, the upper half from the center is thinner than the lower half.
Seat belt limb provided on the formed center pillar
The upper end of the seat belt reinforcement.
Center pillar outer of center pillar, center pillar outer
Welded integrally to reinforcement and side roof rail
And the lower end is welded to the lower half of the center pillar.
It has a seat belt reinforcement structure.

[0007]

In the center pillar, the seat belt reinforcement is integrally welded and fixed over the entire length of the upper half of the slender body.
This increases the rigidity of the upper part of the center pillar,
It improves the strength of the seat belt mounting portion and, seat belt
Weld the lower end of the Triforce to the lower half of the center pillar
The lower part of the thick section structure of the center pillar and the thin section structure
The strength at the connecting part where the cross section changes suddenly with the upper part
Reinforcement also improves the rigidity of the center pillar as a whole.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below in detail with reference to the accompanying drawings. In FIG. 1, the center pillar 1 is composed of a center pillar outer 2 and a center pillar outer reinforcement 3, and the center pillar outer 2 is formed such that the upper half 2a of the upper half from the center is narrower than the lower half 2b of the lower half. And
The lower part 2b is provided with flanges 2c, 2c (FIG. 4) on both sides. And the upper part 2 of this center pillar outer 2
a is formed in a mountain shape along the longitudinal direction. The upper portion 2a of the center pillar 2 is a window portion of a door.

The center pillar outer reinforcement 3 is formed as thin as the upper part 2a of the center pillar outer 2 and slightly longer than the upper part 2a.
It is made wide similarly to the center part 2d of the center pillar outer 2,
Flanges 3c, 3c are formed on both sides. The center pillar outer reinforcement 3 is formed in a chevron shape along the longitudinal direction over the entire length except for the lower end 3b.
a can be fitted to the upper part 2a of the center pillar outer 2.

The seat belt reinforcement 4 has a length substantially equal to the length of the center pillar outer reinforcement 3, a width substantially equal to the inner dimension of the center pillar outer reinforcement 3, and a lower end. Both sides 4a, 4a excluding 4b have a C-channel structure (FIG. 3).
The portion b has a U channel structure (FIG. 4). The seat belt reinforcement 4 is provided with a bolt hole 4c at a predetermined upper portion for attaching a guide ring of the seat belt.

The side roof rail 5 comprises a side roof rail outer 6 and a side roof rail inner 7, and flanges 6a, 6a, 7a, 7a are provided on both sides of the side roof rail outer 6 and the side roof rail inner 7, respectively. Are formed. Then, the side roof rail 5 is formed by welding the side roof rail outer 6 and the flange 6a, 6a, 7a, 7a of the side roof rail inner 7.

The center pillar outer reinforcement 3 is fitted inside the center pillar outer 2 (FIGS. 3 and 4), and the end face 3a is welded to the inner surface of the upper part 2a of the center pillar outer 2 at an appropriate interval. Lower end 3b and flanges 3c, 3c
Is welded to the center portion 2d and the flanges 2c, 2c of the center pillar outer 2. In this way, a center pillar 1 having an upper portion narrower than the lower portion is formed.

The seat belt reinforcement 4 is fitted inside the center pillar outer reinforcement 3 as shown in FIGS. 3 and 4, and both side portions 4a, 4a are fitted on both sides of the center pillar outer reinforcement 3. It is welded at appropriate intervals by spot welding. The lower end 4 b of the seat belt reinforcement 4 is connected to the center pillar outer reinforcement 3.
Is welded to the lower end 3b. Actually, these center pillar outer 2, center pillar outer reinforcement 3 and seat belt reinforcement 4 are simultaneously welded.

The upper ends of the center pillar 1 and the seat belt reinforcement 4 are integrally welded to the side roof rail 5 as shown in FIG. 2, and the lower end of the center pillar 1 is welded and fixed to a side shell (not shown). Is done. Thus, the center pillar 1 is firmly fixed between the side roof rail 5 and the side shell. The guide ring of the front seat belt is attached to the upper hole 4c of the seat belt reinforcement 4 by bolts (both not shown).

Since the upper part of the slender portion of the center pillar 1 is reinforced by the seat belt reinforcement 4 over its entire length, the rigidity is remarkably improved, and the vibration or the force due to the seat belt is reduced by the arrow F or F 'in FIG. It does not deform even if it is added inward or outward as shown. Therefore, the upper part of the center pillar 1 can be made thinner than before. In addition, the rigidity of the continuous portion between the narrow upper portion and the wide lower portion of the center pillar 1 is improved, and the rigidity of the entire center pillar 1 is also improved.

[0016]

According to the present invention as has been described above devised], approximately
A center pillar whose upper half is narrower than the lower half from the center
The seat belt reinforcement is installed in the
The upper end of the belt reinforcement to the center
Tapira Outer, Center Pila Outer Reinforce and Rhino
Welded integrally to the roof rail,
Since the structure is welded to the lower half of La, the upper portion of the rigidity of the Sentapira increases, for the input of the vibration and the seat belt can be obtained sufficient strength, further slimming top of the Sentapira And the rigidity of the entire center pillar can be increased.

[Brief description of the drawings]

FIG. 1 is an assembled perspective view of a center pillar to which a seat belt reinforcement according to the present invention is applied.

FIG. 2 is an assembled sectional view of the center pillar of FIG. 1;

FIG. 3 is a sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a sectional view taken along the line IV-IV in FIG. 2;

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Center pillar 2 Center pillar outer 3 Center pillar outer reinforcement 4 Seat belt reinforcement 5 Side roof rail

Claims (1)

(57) [Scope of request for utility model registration] 1. An upper part is formed thinner than a lower part from a substantially center.
Belt reinforcement installed on a set center pillar
And the upper end of the seat belt reinforcement is
Center Pila Outer, Center Pila Outerlin
Welded to the force and side roof rails integrally,
A seat belt reinforcement having an end welded to a lower half of the center pillar .