JP2002331907A - Seat belt structure for vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a seat belt structure for a vehicle having a guide part guiding a belt member in an appropriate direction without increasing a manufacturing cost. SOLUTION: This seat belt structure for the vehicle is provided with the belt member 12 extending to a cabin inside, having its end part detachably engaged with a car body, and constraining an occupant 2, and a belt retractor 22 capable of rewinding and storing the belt member 12. This structure is so formed that the belt retractor 22 is fixed to a support bracket 24 fitted to prescribed members 26 and 28 of the vehicle, and a guide part 34 positioned between the belt retractor 22 and a car body side engagement part 16 of the belt member 12 and guiding an intermediate part of the belt member 12 is provided in the support bracket 24. This constitution can guide the belt member 12 in an appropriate direction without newly providing a guide member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a seat belt structure for a vehicle, and more particularly, to a belt member extending into a vehicle cabin and having an end portion detachably engaged with a vehicle body to restrain an occupant, and a belt member having the same structure. The present invention relates to a seat belt structure for a vehicle including a retractable belt retractor.

[0002]

2. Description of the Related Art Conventionally, a so-called three-point seat provided with a belt member which extends into a vehicle compartment and whose end is detachably engaged with a vehicle body to restrain an occupant, and a belt retractor capable of winding and storing the belt member. In the belt structure, a guide portion that is located between the belt retractor and / or the vehicle body-side engaging portion of the belt member and guides an intermediate portion of the belt member is provided on a vehicle body-side member such as a center pillar. It is common. Such a structure is suitable for restraining occupants on both the left and right sides of the vehicle, such as a driver's seat and a passenger seat, but cannot be directly applied to restraining an occupant sitting in the center of the vehicle. For this purpose, it has been proposed to provide a belt retractor above the rear part of the passenger compartment, as described in, for example, Japanese Patent Application Laid-Open No. 2000-1156.

[0003]

In the structure described in the above-mentioned publication, there is no particular description about a guide member for guiding the belt member from the belt retractor. In order to make the direction ideal, a separate guide member is required. If such a guide member is provided, it may protrude into the vehicle interior to reduce the space inside the vehicle, or may cause problems such as an increase in the number of parts and an increase in manufacturing cost. On the other hand, if the guide member is provided integrally with the belt retractor, the optimal routing direction of the belt member, that is, the guide direction differs for each vehicle type, so it becomes necessary to design the belt retractor for each vehicle type, There is a problem that the cost is increased.

[0004] The present invention has been made in view of the above points,
It is an object of the present invention to provide a vehicle seat belt structure provided with a guide portion for guiding a belt member in an appropriate direction without increasing manufacturing costs.

[0005]

According to a first aspect of the present invention, there is provided a belt member extending into a vehicle interior and having an end portion removably engaged with a vehicle body to restrain an occupant. And a vehicle seat belt structure including a belt retractor capable of winding and storing the belt member, wherein the belt retractor is fixed to a support bracket attached to a predetermined member of the vehicle. In addition, a guide portion which is located between the belt retractor and the vehicle-body-side engaging portion of the belt member and guides an intermediate portion of the belt member is provided on the support bracket.

According to the first configuration of the present invention, the support bracket itself of the belt retractor can be used as the guide portion of the seat belt, and a new guide member can be provided.
Since there is no need to provide a guide portion in the belt retractor, the belt member can be guided in an appropriate direction without increasing the manufacturing cost.

In a second configuration of the present invention, the support bracket is provided between a roof side rail of an automobile and a rear header.

According to the second configuration of the present invention, the roof side rail is a structural member extending in the front-rear direction of the vehicle body at the upper side of the vehicle body, and the rear side member is a structural member extending in the left-right direction at the rear upper part of the vehicle body. Since the support bracket is installed between the header and the vehicle, the load entering the guide section and the belt retractor from the belt member when the occupant is restrained can be efficiently distributed to the entire rear portion of the vehicle body via the support bracket. . Thereby, the structure of the support bracket can be optimized. Furthermore, a support bracket is installed between the roof side rail and the rear head,
Since the belt member extends toward the occupant from the rear side of the upper part of the vehicle body, the belt member can be guided in an appropriate direction.

[0009] In a third configuration of the present invention, the belt retractor is disposed on the upper surface of the support bracket with the extending direction of the belt member facing rearward of the vehicle.

[0010] According to the third configuration of the present invention, since the belt retractor is provided on the upper surface of the support bracket, the belt retractor does not protrude into the cabin and does not narrow the interior space. Furthermore, since the belt retractor is disposed with the belt member extending in the rearward direction of the vehicle, it is possible to provide the guide portion as rearwardly of the vehicle as possible. The belt member extends from the side toward the occupant, so that the occupant in the center seat can guide the belt member in an appropriate direction.

In a fourth configuration of the present invention, a guide opening through which the belt member is inserted is provided behind the mounting portion of the belt retractor of the support bracket.

According to the fourth aspect of the present invention, since the guide opening is provided behind the mounting portion of the belt retractor of the support bracket, it is possible to provide the guide portion as rearwardly of the vehicle as possible. As a result, the belt member is extended toward the occupant from the rear side of the upper part of the vehicle body, so that the occupant in the center seat can guide the belt in an appropriate direction.

In a fifth aspect of the present invention, the support bracket has one end supported on a roof side rail of an automobile and one end supported on a rear header of the automobile. The first bracket includes a second bracket that can be coupled to the indoor side end of the first bracket, and the first and second brackets are coupled to each other.

According to the fifth configuration of the present invention, since the support bracket has a splittable configuration including the first bracket and the second bracket, it is necessary to mount another component near the belt retractor. In some cases, the belt member is guided in an appropriate direction without impeding the workability of attaching other components, for example, by attaching the second bracket after attaching the first bracket first and then attaching other components. I can do it.

[0015]

As described above, according to the present invention,
It is possible to provide a vehicle seatbelt structure including a guide portion for guiding a belt member in an appropriate direction without increasing manufacturing costs.

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of a vehicle seat belt structure according to the present invention will be described below with reference to the drawings. FIG.
1 shows a front view of the rear part of the cabin of an automobile. Three passengers 1, 2, and 3 can be seated in the rear seats located at the rear of the passenger compartment, and each passenger has a three-point seat belt 4, 5,
It can be restrained by 6.

Seat belts for occupants 1 and 3 on both sides
Reference numerals 4 and 6 denote general cases in which the guide portions 7 and 8 and the belt retractor 22 are attached to the vehicle body pillar portions 9 and 10. Together with two fixed points, such as anchors, tongues / buckles, etc., which are fixed in place under the vehicle, they form a common "three-point" seat belt.

A belt member 12 of the seat belt 5 for the occupant 2 in the center of the rear seat has a first tongue portion 16 which is removably engaged with a buckle portion 14 fixed to the vehicle body, on the opposite side in the lateral direction. The occupant 2 is also fixed to the vehicle body via a second tongue portion 18 which is also detachably connected to a buckle portion 17 fixed to the vehicle body, and a retractor portion 20 fixed to the upper side rear portion of the vehicle body. A "three-point" seat belt that can be restrained is configured.

[0019] A retractor section 2 for the occupant 2 in the center of the rear seat
Reference numeral 0 denotes a roof side rail, which is a vehicle structural member that is disposed at the upper side of the vehicle body and extends in the front and rear direction of the vehicle body at the upper side of the vehicle body via a support bracket 24, Is fixed to a rear header 28 which is a vehicle body structural member extending in the lateral direction of the vehicle body.

In FIG. 1, a roof side rail is shown.
Located below each of the 26 and the rear header 28 are a side window 25 and a rear window 27, which constitute a general vehicle body structure.

Referring now to FIGS. 2 and 3, the detailed structure of the retractor section 20 is shown. The belt retractor 20 is fixed to the support bracket 24 on the upper surface of the support bracket 24 by using a general fixing means such as a bolt 30 for fastening to a nut welded to the lower surface of the support bracket 24. The belt retractor 20 has a belt extension outlet 32 on the rear side of the vehicle body, and is disposed with the extension direction of the belt member 12 facing the rear of the vehicle.

Belt retractor for support bracket 24
A guide opening 34 through which the belt member 12 is inserted is provided behind the mounting portion 25 of the 22. This is a belt retractor
A guide portion 34 that guides an intermediate portion of the belt member 12 is provided between the belt member 12 and the vehicle body side engaging portion (the buckle portion 14 and the anchor portion 18) of the belt member 12. The guide portion 34 guides the belt member 12 once extended to the vehicle rear side from the belt extension outlet 32 to the vehicle body front side where the occupant 2 is seated, and forwardly moves to the intermediate portion of the belt member 12 when the occupant is restrained. The load acts on the support bracket 24.

The support bracket 24 has a mounting portion on the vehicle body side.
36, 38, 40 are provided. A fixing means such as a bolt 42 fastened to a nut (not shown) welded to the outside of the roof side rail 26 on the vehicle body side is inserted through the mounting portion 36 from the lateral direction. On the other hand, fixing means such as bolts 44, which are fastened to nuts (not shown) welded to the upper side of the rear header 28 on the vehicle body, are inserted through the mounting portions 38, 40 from below. With these fixing means, the support bracket 24 is installed between the roof side rail 26 and the rear header 28 and is fixed to the vehicle body, and the belt retractor 22 is fixed to the vehicle body.

In this embodiment, the load acting on the belt member 5 when the occupant is restrained is applied to the belt retractor 22 fixed to the support bracket 24 and the support bracket 24.
Is transmitted to the support bracket 24 via a guide portion 34 integrally formed behind the mounting portion of the belt retractor 22. The transmitted load is transmitted to the vehicle body from a support bracket 24 erected between the roof side rail 26 and the rear header support bracket 28.

Thus, a guide portion for the belt member 12 is separately provided, and it is possible to prevent the guide portion from projecting into the vehicle interior and narrowing the interior space. In addition, this does not increase the number of parts or design the seat belt retractor 22 as a dedicated product for each vehicle type to guide the belt member 12, thereby preventing an increase in manufacturing cost. Furthermore,
Since the guide part 34 can be arranged on the rear side of the vehicle body, the belt member
5 can be guided in an appropriate direction.

Referring now to FIG. 4, there is shown the seat belt structure of the present invention when not in use. A bezel 52 formed of a member such as a resin is attached to an opening appropriately provided in the top ceiling 50 that is provided on the upper side of the vehicle body and constitutes an interior member by using a general engagement structure. Is also good.

From the opening provided at the rear of the bezel 52,
The belt member 12 is extended. The opening is a seat belt
When using 5, it does not restrict its movement at all. However, this opening is sized and / or shaped such that the first tongue 16 of the belt member 5 that is wound by the belt retractor 22 when not in use cannot pass through.

On the other hand, a tongue engaging portion 54 is provided at a front portion of the bezel 52.
Are integrally formed of resin, and can be engaged with the second tongue portion 18. Note that the second tongue section 18 is
Size that cannot pass through the belt insertion port 17 provided in
Or a shape.

By providing this bezel 52, when the seat belt 5 is not used, the belt member 12 wound by the belt retractor 22 can be connected to the first and second tongue portions.
The seat belt 5 is locked to the bezel 52 by the buttons 16 and 18, and the usability of the seat belt 5 can be enhanced. Further, by providing the tongue engaging portion 54, the seat belt 5 when not in use can be stored along the top sealing 50, so that the interior space of the vehicle can be maximized and aesthetically. It is very preferable.

Next, a second embodiment of the vehicle seat belt structure of the present invention will be described mainly with reference to FIG. FIG. 5 is a diagram corresponding to FIG. 3 of the first embodiment, and the same components are denoted by the same reference numerals.

The second embodiment is different from the first embodiment in that the support bracket 24 is composed of a first bracket 60 and a second bracket 62. The retractor 22 is attached to the first bracket by using the fixing means 30, and the guide portion 34 and attachment portions 38 and 40 to the rear header 28 are provided. On the other hand, the second bracket 62 is provided with a mounting portion 36 to the roof side rail 26.

The first and second brackets 60 and 62 are connected to the interior end portions 61 and 63 of the vehicle, respectively. Are engaged with each other by a fixing means (not shown) such as a bolt fastened to a nut welded to the nut.

According to the second embodiment, for example, the first bracket 60 to which the retractor 22 is attached is attached to the rear header 28 in advance, and other components (for example, curtains) are attached to the roof side rail in that state. ·Airbag,
Radio / antenna wires, wiring harnesses, etc.) can be placed or attached, and then the second bracket 62 can be fixed to the first bracket 60 and the roof side rail 26. Thereby, workability can be ensured when it is necessary to arrange or attach another component near the retractor unit 20.

The present invention is not limited to the embodiments described above, but may be modified or improved, for example, without the bezel 52, without departing from the scope of the claims. It is possible to implement.

[Brief description of the drawings]

FIG. 1 is a partially cutaway front view showing a rear part of a passenger compartment of a vehicle seatbelt structure according to an embodiment of the present invention from the front.

FIG. 2 is a side view of the rear part of the cabin of the embodiment of the vehicle seatbelt structure of the present invention.

FIG. 3 is a perspective view showing a retractor portion of the embodiment of the vehicle seat belt structure of the present invention.

FIG. 4 is a perspective view showing a bezel which can be applied to a seat belt structure of a vehicle according to the present invention and which can lock a tongue portion of a seat belt, from below a passenger compartment.

FIG. 5 is a perspective view showing a retractor portion of a vehicle seat belt structure according to a second embodiment of the present invention.

[Explanation of symbols]

 12 Belt member 16, 18 End of belt member (engagement part / tongue part on body side) 22 Belt retractor 24 Support bracket 26 Roof side rail 28 Rear header 34 Guide part 60 First bracket 62 Second bracket 61, 63 Indoor end

Claims (5)

[Claims] 1. A vehicle seat belt comprising: a belt member extending into a vehicle interior and having an end portion detachably engaged with a vehicle body to restrain an occupant; and a belt retractor capable of winding and storing the belt member. And wherein the belt retractor is fixed to a support bracket attached to a predetermined member of the vehicle, and is located between the belt retractor and the vehicle body side engaging portion of the belt member. And a guide portion for guiding an intermediate portion of the belt member is provided on the support bracket. 2. The vehicle seat belt structure according to claim 1, wherein the support bracket is provided between a roof side rail of the vehicle and a rear header. 3. The belt retractor is disposed on an upper surface of the support bracket so that a direction in which the belt member extends extends rearward of the vehicle.
The vehicle seatbelt structure according to claim 1. 4. A guide opening through which the belt member is inserted is provided behind the mounting portion of the belt retractor of the support bracket.
4. The seat belt structure for a vehicle according to any one of claims 3 to 3. 5. A first bracket, one end of which is supported by a rear header of an automobile, and one end of which is supported by a roof side rail of an automobile, and an indoor end is an indoor end of the first bracket. The seat belt structure for a vehicle according to any one of claims 1 to 4, comprising a second bracket that can be coupled to the vehicle, and the first and second brackets are coupled to each other.