JP3838162B2 - Crew restraint system - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an occupant restraint device for a vehicle such as an automobile.
[0002]
[Prior art]
A seat belt device is well known as an occupant restraint device for a vehicle such as an automobile. In this seat belt device, a shoulder belt portion for restraining a chest of an occupant seated on a seat and a lap belt portion for restraining a waist portion are set. When the restraining force is substantially the same, if the restraining force is large, there is a possibility that the impact acting on the occupant at the time of the vehicle collision may increase. On the other hand, if the restraining force is small, the occupant moves toward the vehicle front side at the time of the vehicle collision. There is a risk that the amount of movement will increase, and the lower limbs of the occupant may interfere with the front part of the vehicle, or the lap belt part may be displaced to the abdomen of the occupant.
[0003]
Therefore, conventionally, Japanese Patent No. 2547860 has a lap belt that restrains the occupant's waist and a leg belt that restrains the occupant's thigh, and generates tension in the leg belt at the time of a vehicle collision to generate the thigh. A technique is disclosed in which the leg belt is caused to generate a rotational moment in the direction opposite to the rotational moment around the waist center of gravity by the lap belt tension, by pressing downward on the leg belt, thereby preventing the lap belt from moving upward to the abdomen.
[0004]
[Problems to be solved by the invention]
However, in the technique described in the above publication, the leg belt regulates the movement of the occupant's thigh in the vertical direction and does not have a function of suppressing the movement of the occupant to the vehicle front side. There is a problem that the restraining force of the vehicle is not sufficient, and interference between the occupant's lower limbs and the vehicle front part at the time of a vehicle collision cannot be sufficiently suppressed.
[0005]
Therefore, an object of the present invention is to provide an occupant restraint device that can appropriately restrain an occupant seated on a seat with a simple configuration.
[0006]
[Means for Solving the Problems]
In order to achieve the above object, an invention according to claim 1 is directed to a retractor provided on one side in the seat width direction of an occupant seated on a seat, and one end of the occupant that is retractably wound on the retractor. A shoulder belt that is inserted into a tongue insertion hole that is detachable from a buckle provided on the other side in the seat width direction by restraining the chest, and extends from the tongue insertion side terminal portion of the shoulder belt, A first lap belt that is inserted into an insertion hole of a locking portion provided on one side in the seat width direction while restraining the waist portion of the first lap belt, and extends from the locking portion insertion side terminal portion of the first lap belt. A first lap belt and a second lap belt, the second lap belt being restrained by a tongue that is detachably attached to a buckle provided on the other side in the seat width direction while restraining a waist portion of the occupant Are relatively movable polymerization, to improve the restraining force of the waist with a simple configuration, and to a passenger seated in the seat can be properly restrained.
[0007]
According to a second aspect of the present invention, there is provided a first retractor provided on one side of the seat width direction of an occupant seated on the seat, and one end of the occupant that is retractably wound on the first retractor. A shoulder belt that is inserted into a tongue insertion hole that is detachably attached to a buckle provided on the other side in the seat width direction and extends from the tongue insertion side terminal portion of the shoulder belt, and is a waist portion of an occupant A first lap belt which is restrained on one side in the seat width direction, a second retractor provided on one side in the seat width direction of the occupant, and one end wound up so as to be able to enter and exit the second retractor And a second lap belt that restrains the waist of the occupant and is secured to a tongue that is detachably attached to a buckle provided on the other side in the seat width direction, the first lap belt Wherein the second lap belt is relatively movable polymerization, to improve the restraining force of the waist with a simple configuration, and to a passenger seated in the seat can be properly restrained.
[0008]
In the invention according to claim 3, the overlapping portion of the first lap belt and the second lap belt is provided with a frictional force increasing means for increasing the overlapping frictional force, and the binding force of the lap belt portion. Can be made larger.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF EMBODIMENTS Hereinafter, an occupant restraint device according to the present invention will be described in detail with reference to the drawings using embodiments.
[0010]
[First embodiment]
FIG. 1 is a schematic configuration diagram of an occupant restraint device (seat belt device) for a vehicle such as an automobile showing a first embodiment of the present invention, and FIG.
[0011]
As shown in FIGS. 1 and 2, a seat belt device 1 as an occupant restraint device for a vehicle such as an automobile includes a vehicle side portion (occupant) on one side in the width direction of the seat cushion 2 (not shown) seated on a seat cushion 2. The right side of the body), the retractor 4 attached to the body 3 and one end of the retractor 4 are wound around the retractor 4, and the shoulder anchor plate 5 attached to the body 3 is inserted in the middle portion of the occupant. An insertion hole 22 of a tongue 7 that is detachably attached to a buckle 6 that is fixed to the seat cushion 2 with a bolt 21 inside the vehicle (left hand as viewed from the occupant) that restrains the chest and is the other side in the width direction of the seat cushion 2. The shoulder belt portion 8 is inserted into the belt.
[0012]
Further, the latch 7 extends from the tongue 7 insertion side terminal portion of the shoulder belt portion 8 and restrains the occupant's waist, and is attached to the body 3 at the vehicle side portion on one side in the width direction of the seat cushion 2. The first lap belt portion 10 inserted through the insertion hole 23 of the portion 9 and the seat cushion 2 extending from the engaging portion 9 insertion side terminal portion of the first lap belt portion 10 to restrain the occupant's lower back portion A second lap belt portion 11 latched to a tongue 7 detachably attached to a buckle 6 fixed to the seat cushion 2 with a bolt 21 inside the vehicle on the other side in the width direction, and the first lap The belt portion 10 and the second lap belt portion 11 are superposed such that they can move relative to each other when restrained by an occupant (see the up and down arrows in FIG. 1).
[0013]
The overlapping portion of the first lap belt portion 10 and the second lap belt portion 11 may be provided with friction force increasing means for increasing the overlapping friction force. That is, as a frictional force increasing means, at least one of the first lap belt part 10 and the second lap belt part 11 may be made of a material having a relatively high frictional force, or a surface fastener may be provided on each overlapping surface. As shown in FIG. 5, it is good also as a structure which pinches | interposes the 1st lap belt part 10 and the 2nd lap belt part 11 using the holding member 20 of a rectangular tube shape. With such a configuration, the restraining force of the waist can be improved with a simple configuration. The second lap belt portion 11 is folded back at the tongue 7 and sewn at the sewing portion 12.
[0014]
1, the tongue 7 is attached to the buckle 6, that is, the shoulder belt as the occupant moves to the front side of the vehicle when the vehicle collides with the seat belt device 1. Tension is generated in the portion 8, the first lap belt portion 10 and the second lap belt portion 11, and the chest of the occupant is restrained by the shoulder belt portion 8, while the waist is in the first lap belt portion 10 and the second lap belt. Restrained by the portion 11, the behavior of the occupant inside the vehicle is suppressed as small as possible.
[0015]
At this time, the shoulder belt portion 8 can obtain an appropriate restraining force commensurate with the occupant's proof force by a slight amount of withdrawal of the retractor 4, while the first lap belt portion 10 and the second lap belt portion 11 are overlapped with each other. As a result, the pull-out resistance is increased, the restraining force of the waist is improved, and the passenger sitting on the seat cushion 2 can be restrained appropriately. In other words, it is possible to prevent the occupant's lower limbs from interfering with the vehicle front part by suppressing the movement of the occupant toward the vehicle front side while suppressing the impact on the occupant chest.
[0016]
In this way, in this embodiment, the simple structure of superposing the first lap belt part 10 and the second lap belt part 11 improves the restraining force of the waist, and thus balances the restraining force of the upper body and lower body. It can be tuned to a more appropriate state.
[0017]
[Second Embodiment]
FIG. 3 is a schematic configuration diagram of an occupant restraint device (seat belt device) for a vehicle such as an automobile showing a second embodiment of the present invention, and FIG.
[0018]
In the seat belt device 1 according to the first embodiment, this is the first mounted on the body 3 on the vehicle side (right hand as viewed from the occupant) of the occupant seated on the seat cushion 2 on one side of the seat cushion 2 in the width direction. The retractor 4 and one end of the seat cushion 2 are wound around the first retractor 4 so as to be able to enter and exit, and after the shoulder anchor plate 5 attached to the body 3 is inserted in the middle portion, the chest of the occupant is restrained. A shoulder belt portion 8 inserted through an insertion hole 22 of a tongue 7 detachably attached to a buckle 6 fixed to the seat cushion 2 with a bolt 21 inside the vehicle on the other side in the direction (left hand as viewed from the occupant); Extending from the tongue 7 insertion side end portion of the shoulder belt portion 8, restrains the occupant's waist, and the width of the seat cushion 2 is the same. The first lap belt portion 10 that is locked to the fixing portion 13 that is attached to the body 3 at the vehicle side portion that is the side, and the vehicle side portion that is one side in the width direction of the seat cushion 2 of the occupant is attached to the body 3. The second retractor 14 and one end of the second retractor 14 are wound around the second retractor 14 so as to be able to enter and exit, and the middle portion of the second retractor 14 is inserted through the insertion hole of the guide member 15 attached to the seat cushion 2 to restrain the occupant's waist. And a second lap belt portion 11 that is engaged with a tongue 7 that is detachably attached to a buckle 6 that is fixed to the seat cushion 2 with a bolt 21 inside the vehicle on the other side in the width direction of the seat cushion 2. In this example, the first lap belt portion 10 and the second lap belt portion 11 can be superposed so that they can move relative to each other when restrained by an occupant (see the up and down arrows in FIG. 3). .
[0019]
According to this, at the time of a vehicle collision, the shoulder belt portion 8 can obtain an appropriate restraint force commensurate with the occupant's strength by the slight pulling amount of the first retractor 4, while the first lap belt portion 10 and the second lap belt portion. The pulling resistance is increased by the mutual frictional force of 11, the restraining force of the waist is improved, and the passenger sitting on the seat cushion 2 can be restrained appropriately. In other words, it is possible to prevent the occupant's lower limbs from interfering with the vehicle front part by suppressing the movement of the occupant toward the vehicle front side while suppressing the impact on the occupant chest.
[0020]
Needless to say, the present invention is not limited to the above embodiments, and various modifications can be made without departing from the scope of the present invention. For example, the (first) retractor 4, the second retractor 14, the locking portion 9, and the fixing portion 13 may be provided on the seat itself (in the case of a rear seat, for example), or the buckle 6 may be provided on the body side. good. Further, the tongue 7 into which the shoulder belt portion 8 is inserted and the tongue 7 to which the second lap belt portion 11 is locked are integrated in the illustrated example, but may be separate. Further, in the first embodiment, the retractor 4 and the locking portion 9 are provided on the occupant right hand side, and the buckle 7 is provided on the occupant left hand side, but the retractor 4 and the locking portion 9 are provided on the occupant left hand side. In addition, the buckle 7 may be provided on the occupant right hand side. In the second embodiment, the retractors 4 and 14 and the fixing portion 13 are provided on the occupant right hand side, and the buckle 6 is provided on the occupant left hand side, but the retractors 4 and 14 and the fixing portion 13 are provided on the occupant left hand side. The buckle 6 may be provided on the right-hand side of the passenger.
[0021]
【The invention's effect】
As described above, according to the first aspect of the present invention, the retractor provided on one side in the seat width direction of the occupant seated on the seat, the one end being wound up so as to be able to enter and exit the retractor, and the chest of the occupant A shoulder belt that is inserted into a tongue insertion hole that is detachably attached to a buckle provided on the other side in the seat width direction and extends from the tongue insertion side terminal portion of the shoulder belt, and is a waist portion of an occupant The first lap belt inserted through the insertion hole of the locking portion provided on one side in the seat width direction, and extending from the locking portion insertion side terminal portion of the first lap belt. A second lap belt that is locked to a tongue that is detachably attached to a buckle provided on the other side in the seat width direction while restraining the waist, and the first lap belt and the second lap belt are phase Since the movable polymerization, to improve the restraining force of the waist with a simple configuration, the occupant seated on the seat can be properly restrained.
[0022]
According to the invention of claim 2, the first retractor provided on one side in the seat width direction of the occupant seated on the seat, and one end of the occupant are wound so as to be able to enter and exit the first retractor, and the chest of the occupant A shoulder belt that is inserted into a tongue insertion hole that is detachable from a buckle provided on the other side in the seat width direction, and extends from the tongue insertion side terminal portion of the shoulder belt. A first lap belt that restrains the waist and is locked on one side in the seat width direction, a second retractor provided on one side in the seat width direction of the occupant, and one end wound around the second retractor. A second lap belt that is secured to a tongue that is detachably attached to a buckle provided on the other side in the seat width direction while restraining a waist portion of the occupant. The Since the second lap belt is relatively movable polymerization, to improve the restraining force of the waist with a simple configuration, the occupant seated on the seat can be properly restrained.
[0023]
According to the invention of claim 3, since the overlapping portion of the first lap belt and the second lap belt is provided with frictional force increasing means for increasing the overlapping frictional force of the lap belt portion. The binding force can be increased.
[Brief description of the drawings]
FIG. 1 is a schematic configuration diagram of an occupant restraint device (seat belt device) for a vehicle such as an automobile according to a first embodiment of the present invention.
FIG. 2 is an enlarged view of the main part of the same.
FIG. 3 is a schematic configuration diagram of an occupant restraint device (seat belt device) for a vehicle such as an automobile according to a second embodiment of the present invention.
FIG. 4 is an enlarged view of the main part of the same.
FIG. 5 is a perspective view of a frictional force increasing means.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Seat belt apparatus 2 Seat cushion 3 Body 4 (1st) Retractor 5 Shoulder anchor plate 6 Buckle 7 Tongue 8 Shoulder belt part 9 Locking part 10 First lap belt part 11 Second lap belt part 12 Sewing part 13 Fixing part 14 Second retractor 15 Guide member 20 Holding member

Claims (3)

A retractor provided on one side of the seat width direction of an occupant seated on the seat;
A shoulder belt that is wound so as to be able to enter and leave the retractor, and that is inserted into a tongue insertion hole that is detachable from a buckle provided on the other side in the seat width direction by restraining the chest of the occupant,
A first lap belt extending from the tongue insertion side terminal portion of the shoulder belt, constraining the occupant's waist, and being inserted into an insertion hole of a locking portion provided on one side in the seat width direction;
The second lap belt extends from the locking portion insertion side terminal portion, and restrains the occupant's waist, and is locked to a tongue that is detachably attached to a buckle provided on the other side in the seat width direction. With a lap belt,
The occupant restraint device, wherein the first lap belt and the second lap belt are superposed so as to be relatively movable. A first retractor provided on one side of the seat width direction of an occupant seated on the seat;
A shoulder belt that is wound around the first retractor so as to be able to enter and exit, and that is inserted into a tongue insertion hole that is detachable from a buckle provided on the other side in the seat width direction while restraining the chest of the occupant; ,
A first lap belt extending from the tongue insertion side terminal portion of the shoulder belt, restraining the occupant's waist and being locked on one side in the seat width direction;
A second retractor provided on one side in the seat width direction of the occupant;
A second lap belt that has one end wound around the second retractor so as to be able to enter and exit, and that is restrained by a tongue that restrains the waist of the occupant and is detachable from a buckle provided on the other side in the seat width direction; Have
The occupant restraint device, wherein the first lap belt and the second lap belt are superposed so as to be relatively movable. 3. The occupant restraint device according to claim 1, wherein a frictional force increasing means for increasing a mutual frictional force is provided in a overlapping portion between the first lap belt and the second lap belt.

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