JPH08282438A - Mounting structure of retractor for seat belt - Google Patents

Abstract

PURPOSE: To prevent a pillar part from defection even in case an excessive force acts on a seat belt, while constitution remains simple, and accordingly prevent the body of a retractor from deflecting inward of a cab. CONSTITUTION: An extension part 27 arranged alongside a pillar inner panel 4 is integrally shaped in the under-part of a stay 21 which is installed in the lower part of the body 6 of a retractor, and the stay 21 is furnished with a flange side 23 formed by bending approx. at a right angle to this extension part 27, and the stay 21 is installed to the pillar inner panel 4 in the condition that the part 27 is in tight attachment alongside the pillar inner panel 4.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat belt retractor mounting structure which is mounted on a pillar portion of an automobile.
More specifically, the stay member disposed at the lower portion of the retractor body is fixed to the pillar inner panel, and the upper portion of the retractor body is fixed to the pillar inner panel, so that the seat belt retractor is attached to the pillar inner panel. The present invention relates to a seatbelt retractor mounting structure adapted to be mounted on a vehicle.

[0002]

2. Description of the Related Art FIGS. 5 and 6 show a conventional seat belt retractor mounting structure of this type, in which 1 is a pillar portion of a vehicle body and 2 is a pillar portion 1.
A seat belt retractor 3 attached to the seat belt 3 is a seat belt. The above-mentioned pillar portion 1 is a box-shaped structure portion formed by joining a pillar inner panel 4 and a pillar outer panel 5 in a closed cross-sectional shape, and a seat belt retractor 2 is attached to an appropriate portion of the pillar inner panel 4. .

More specifically, in the seat belt retractor 2 described above, the retractor body 6 around which the seat belt 3 is wound, the stay member 7 fixed to one side surface of the lower part of the retractor body 6, and the retractor body 6. The hook member 8 is fixed to one side surface of the upper portion.
Thus, the retractor body 6 is inserted and arranged in the pillar portion 1 through the opening 9 formed at an appropriate position of the pillar inner panel 4 on the side portion of the seat (not shown), and under this state, the stay member 7 is placed. The mounting piece 7a of the above is applied to the lower part of the opening 9 of the pillar inner panel 4 and bolted. Then, the hook member 8 is inserted into the hole portion 10 provided in the upper portion of the opening 9 of the pillar inner panel 4, so that the lower portion of the seat belt retractor 2 is fixed to the pillar portion 1.

Incidentally, in FIG. 5 and FIG.
Is a stepped portion formed on the pillar inner panel 4 and the pillar outer panel 5 in order to increase the amount of space inside the vehicle interior and to improve the designability outside the vehicle body. These stepped portions 11 and 12 are usually The pillar inner panel 4 is provided below the opening 9. In the prior art, the pillar inner panel 4 and the attachment piece 7a of the stay member 7 are joined to each other in a portion that does not reach the step portion 11, that is, in a relatively narrow area between the step portion 11 and the opening 9 and the bolt. It is supposed to be tightened.

In addition, the seat belt 3 is pulled out from the retractor body 6 fixed to the pillar portion 1 in this way, and is stretched over the shoulder anchor member 13 fixed to the inner surface of the upper portion of the pillar portion 1 to be seated. Is fastened to the seat belt anchor (not shown).

[0006]

However, in the conventional seat belt retractor 2 mounting structure as described above, when an excessive acting force F ₁ is applied to the seat belt 3 in the direction indicated by the arrow A in FIG. It is conceivable that the pillar portion 1 is bent and deformed so that the position where the retractor body 6 is disposed is closer to the vehicle interior side. That is, when the seat belt retractor 2 is fixed to the pillar portion 1 and the seat belt 3 receives an excessive acting force F ₁ , an upward force is applied to the point a in FIG. 6 (the bolting position of the stay member 7). At the same time as f ₁ is generated, a downward force f ₂ is generated at the point b (the seat belt passing point of the shoulder anchor member 13), so that the compressive force is applied to the portion of the pillar inner panel 4 between the points a and b. Will work. On the other hand, tensile forces f ₃ and f _{4 in} opposite directions act on the pillar outer panel 5. For this reason, the pillar inner panel 4 and the pillar outer panel 5 are bent near the step portions 11 and 12 of the seat belt retractor 2 having a gentle cross-sectional change, and the mounting members of the stay member 7 of the seat belt retractor 2 are bent. The part 7a may be bent. In such a case, the hook member 8 of the seat belt retractor 2
It is conceivable that a problem may occur in which the flexure bends through the hole 10 of the pillar inner panel 4.

In order to solve such a problem, the thickness of the pillar inner panel 4 and the pillar outer panel 5 may be increased, or a dedicated reinforcing member may be added. If it is adopted, another problem arises that the weight is increased and the cost is increased.

The present invention has been made in view of such an actual situation, and an object thereof is a pillar portion even when an excessive acting force is applied to a seat belt, even though the seat belt has an extremely simple structure. It is an object of the present invention to provide a seatbelt retractor mounting structure capable of preventing the flexure of the seatbelt and thus the flexure of the retractor body toward the vehicle interior.

[0009]

In order to achieve the above-mentioned object, according to the present invention, a stay member disposed at a lower portion of a retractor body is fixed to a pillar inner panel, and an upper portion of the retractor body is fixed to the pillar. In a seatbelt retractor mounting structure in which a seatbelt retractor is mounted on the pillar inner panel by being attached to the inner panel, an extending portion having a shape along the pillar inner panel at a position below the stay member. A state in which the side surface of the flange is formed integrally with the stay member and is bent and formed in a direction substantially perpendicular to the extension portion, and the extension member is closely attached along the pillar inner panel. The stay member is attached to the pillar inner panel.

Further, according to the present invention, the extended portion of the stay member is formed into a shape that follows the stepped portion of the pillar inner panel, and a portion of the extended portion that is in close contact with the stepped portion is vertically extended. A bead portion extending in a longitudinal shape is provided.

[0011]

With the structure in which the extended portion of the stay member is attached along the pillar inner panel so as to be in close contact with the pillar inner panel, the stay member has a function as a mounting member for the seat belt retractor, It also has a function as a reinforcing member. Therefore, the deflection of the pillar portion is suppressed when an excessive acting force is applied to the pillar portion via the seat belt. Further, by providing the flange side surface portion on the stay member, the bending of the stay member with respect to the pillar inner panel is effectively suppressed.

Further, by providing the bead portion at this portion by forming the extending portion into a shape that follows the step portion of the pillar inner panel, the strength of the pillar portion at the contact portion between the stay member and the pillar inner panel is further increased. It

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
Will be described with reference to. 1 to 4, the same parts as those in FIGS. 5 and 6 are designated by the same reference numerals, and detailed description thereof will be omitted.

FIG. 1 shows a pillar portion 1 of an automobile to which a seat belt retractor mounting structure according to the present invention is applied. As shown in FIGS. 1 and 2, the seatbelt retractor 20 used in this example includes a retractor main body 6 around which the seatbelt 3 (see FIG. 4) is wound, and a stay fixed to one lower side surface of the retractor main body 6. Member 2
1 and a hook member 8 fixed to one side surface of the upper portion of the retractor body 6.

The stay member 21 has a fixing piece portion 21a fixed to one side surface of the lower portion of the retractor body 6 and is attached to a lower portion of the retractor body accommodating opening 9 of the pillar inner panel 4. 21b. As shown in FIG. 2, the fixed piece portion 21a extends along the both side surfaces of the retractor body 6 on both sides of the flat plate portion 22 that is in contact with the lower surface of the retractor body 6. And a pair of flange side faces 23 bent substantially at right angles to each other, and therefore the fixing piece 21a is formed in a substantially U-shaped cross section. And
The flat plate portion 22 is fixed to one surface of the lower portion of the retractor body 6 with rivets 24, and the pair of flange side surface portions 23
The upper part of each is fixed by rivets 25 to both side surfaces of the lower part of the retractor body 6. As a result, the fixed piece portion 21a of the stay member 21 is integrally fixed to the lower portion of the retractor body 6. On the other hand, in this fixed state, the mounting piece portion 21b of the stay member 21 is arranged so as to project downward from the retractor body 6.

Further, as shown in FIG. 2, the stay member 21
The mounting piece portion 21b is provided with a continuous portion 26 (a portion corresponding to the conventional mounting piece portion 7a) continuously provided at the lower end of the fixed piece portion 21a, and a lower portion of the continuous portion 26 is provided. An extension portion 27 having a shape along the pillar inner panel 4 is integrally formed. More specifically, the extension portion 27 is formed by bending so as to correspond to (match) the shapes of the step portion 11 formed by bending at the lower portion of the retractor body accommodating opening 9 of the pillar inner panel 4 and the upper and lower portions thereof. In addition, a pair of bead portions 28 extending in the longitudinal direction along the up-down direction are integrally formed in the bent portion corresponding to the step portion 11, and the lower end edge portion thereof is formed as shown in FIGS. 2 and 3. A projecting shaped nut portion 29 is integrally formed. The bead portion 28 and the molding nut portion 29 are formed on one side of the extending portion 27, that is, on the side opposite to the surface joined to the pillar inner panel 4.

Further, in the above-mentioned stay member 21, a gripping piece 30 for mounting work composed of a bending piece is formed on the upper end of the flat plate portion 22 of the fixing piece portion 21a, and a connecting portion 26 of the mounting piece portion 21b is formed by bending. A cut-and-raised piece 31 for positioning is provided.

On the other hand, in the pillar inner panel 4, an opening 9 for accommodating the retractor body and a hole portion 10 for inserting a hook are formed as in the conventional case, and the cut-and-raised parts are formed at appropriate places below the opening 9. A through hole 32 corresponding to the piece 31 and a bolt insertion hole 33 corresponding to the molding nut portion 29 are formed.

Thus, the retractor 20 for seat belts
Are attached to the pillar portion 1 as follows. First, when mounting the seat belt retractor 20, the gripping piece 30 of the stay member 21 is gripped to hold the seat belt retractor 20, and the hook member 8 is attached.
Is engaged in the hole 10 of the pillar inner panel 4. Then, after inserting the attachment piece portion 21b of the stay member 21 and the retractor body 6 into the pillar portion 1 from the inside of the pillar inner panel 4 through the opening 9, the cut-and-raised piece 31 of the stay member 21 of the pillar inner panel 4 is inserted. The seat belt retractor 20 is positioned with respect to the pillar inner panel 4 by inserting the seat belt retractor 20 into the through hole 32. Next, the mounting piece portion 21b is placed in close contact with the lower portion of the opening 9 of the pillar inner panel 4, that is, the mounting piece portion 21b is further passed from the lower portion of the opening 9 via the step portion 11 and further. The pillar inner panel 4 is placed in close contact with the back surface of the pillar inner panel 4 along a region reaching the lower portion. Thereafter, as shown in FIG. 1, the bolt 34 is screwed into the molded nut portion 29 of the stay member 21 through the bolt insertion hole 33 of the pillar inner panel 4, and is fixed by tightening.

Under the condition that the seat belt retractor 20 is attached to the pillar portion 1 in this way, the stay member 21 of the seat belt retractor 20 makes a wider contact area with the pillar inner panel 4 than in the conventional case. Will be combined with. Specifically, the stay member 21
Since the extended portion 27 is attached to the pillar inner panel 4 in close contact with the pillar inner panel 4 in addition to the continuous portion 26, the contact portion becomes wide and the extended portion 27 is provided with the bead portion 28. The strength of the box-shaped pillar portion 1 in and around the step portion 12 of the pillar inner panel 4 is significantly improved. That is, the extending portion 27 of the stay member 21 functions as a reinforcing member for the pillar portion 1. Therefore, even when an excessive acting force F ₂ is applied to the seat belt 3 in the direction indicated by the arrow in FIG.
It is possible to effectively suppress the occurrence of a problem in which the pillar portion 1 is bent at 12 and its vicinity.

On the other hand, the stay member 21 is provided with a pair of flange side surfaces 23, and the flange side surfaces 23 are fixed to the retractor body 6 by the rivets 25, and as shown in FIG. The pillar inner panel 4 is provided by providing the protruding flange side surface portion 23a.
It is possible to suppress the deflection of the stay member 21 with respect to.

As a result, the flexure of the hook member 8 when an excessive acting force F ₂ is applied to the seat belt 3 as shown in FIG. 4 can be suppressed to a small extent, and as a result, the retractor body 6 projects toward the passenger compartment. Can be avoided.

Further, according to this example, the strength of the pillar portion 1 can be arbitrarily set by appropriately adjusting the width of the flange side surface portion 23a, the height of the bead portion 28 and the like. . Further, in this example, since the forming nut portion 29 is integrally formed on the stay member 21, it is not necessary to use a nut of a separate member, and therefore the number of parts can be reduced.

The embodiment of the present invention has been described above.
The present invention is not limited to this embodiment, and various modifications and changes can be made based on the technical idea of the present invention. For example, the shape of the extension portion 27 of the stay member 21, the flange side surface portion 23, and the like can be variously modified as necessary, and the number of the bead portions 28 can be appropriately changed.

[0025]

As described above, according to the present invention, an extending portion having a shape along the pillar inner panel is integrally formed below the stay member arranged in the lower portion of the retractor body, and the extending portion is Since the flange side surface formed by bending in a substantially right angle direction is provided on the stay member, the stay member is attached to the pillar inner panel in a state where the extended portion is in close contact with the pillar inner panel. ,
Despite having an extremely simple structure, the stay member functions as a reinforcing member for the box-shaped pillar portion as a result of providing the extended portion on the stay member. That is,
The stay member functions as a mounting member for the seat belt retractor and also as a reinforcing plate for the pillar portion. Therefore, even when an excessive acting force is applied to the pillar portion via the seat belt pulled out from the retractor body, the deflection of the pillar portion can be effectively suppressed. In addition, since the stay member is provided with the flange side surface portion, the stay member can be prevented from bending with respect to the pillar inner panel. As a result, it is possible to avoid the problem that the retractor body is bent against the pillar inner panel.

Further, according to the present invention, by providing a bead portion in the extending portion, it is possible to further improve the strength of the pillar portion. Further, by adjusting the width of the flange side surface portion of the stay member and the height of the bead portion, it is possible to arbitrarily set the strength of the pillar portion (vehicle body strength).

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a pillar portion of an automobile having a seat belt retractor mounting structure according to the present invention.

FIG. 2 is a perspective view of a seat belt retractor.

FIG. 3 is a perspective view showing a molded nut portion integrally molded with the extended portion of the stay member.

FIG. 4 is a cross-sectional view for explaining a state when an excessive acting force is applied to the pillar portion via the seat belt.

FIG. 5 is an exploded perspective view showing a conventional seat belt retractor mounting structure.

FIG. 6 is a cross-sectional view of a pillar portion of an automobile having a conventional seat belt retractor mounting structure.

[Explanation of symbols]

 1 Pillar Part 3 Seat Belt 4 Pillar Inner Panel 5 Pillar Outer Panel 6 Retractor Body 8 Hook Member 20 Seat Belt Retractor 21 Stay Member 23, 23a Flange Side Part 26 Continuous Part 27 Extension Part 28 Bead Part 29 Forming Nut 30 Grasping Piece 31 Cut and raised piece 32 Through hole 33 Bolt insertion hole

Claims (2)

[Claims] 1. A seat belt retractor for a seat belt retractor, wherein a stay member arranged at a lower portion of a retractor body is fixed to a pillar inner panel, and an upper portion of the retractor body is fixed to the pillar inner panel. In a seatbelt retractor mounting structure adapted to be mounted on a panel, an extension portion having a shape along the pillar inner panel is integrally formed at a lower portion of the stay member, and a direction substantially perpendicular to the extension portion is formed. The stay side member is provided with a flange side surface formed by bending and is formed, and the stay member is attached to the pillar inner panel in a state in which the extended portion is closely attached along the pillar inner panel. Characteristic seat belt retractor mounting structure. 2. The extending portion of the stay member is formed into a shape that follows the stepped portion of the pillar inner panel, and a part of the extended portion that is in close contact with the stepped portion is elongated in the up-down direction. The seatbelt retractor mounting structure according to claim 1, wherein an extending bead portion is provided.