JP2018034559A - Vehicular occupant restraining device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicular occupant restraining device that can reduce pressure acting on a vicinity of a breast bone of an occupant from a shoulder belt side of a three-point seat belt at a front collision.SOLUTION: A swelling device is provided, along a shoulder belt 22A from a belt guide arranged above a seat back toward a buckle 32 side, across a range of a shoulder part S of an occupant P. At a front collision, a swelling-out part 42 of the swelling device is inflated toward the occupant P side, so that the shoulder part S of the occupant P is pressed at high pressure against the swelling-out part 42 to be restrained. While, when the swelling-out part 42 swells, the shoulder belt 22A is separated from the occupant P, in a vicinity of a breast bone B. This can suppress or prevent high pressing force from being applied to the shoulder part S with comparatively high strength in a human body and pressing force from acting on the vicinity of the breast bone B with relatively low strength, at the front collision.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a vehicle occupant restraint device.

  In recent years, a vehicle occupant restraint device (air belt) that inflates an airbag with gas along a seat belt that restrains an occupant has been proposed in order to improve restraint performance of an emergency seat belt device in an automobile.

  However, since the air belt is inflated, the restraining pressure on the occupant's body increases. For this reason, the shoulder belt may strongly press the ribs and may cause a large deformation (hereinafter referred to as “chest deflection”) in the chest.

  Therefore, for example, Patent Document 1 proposes an inflatable belt in which an occupant's shoulder portion (main inflatable portion) has a longitudinal expansion width that is larger than a longitudinal expansion width in a chest portion (gas supply passage). Has been. Thus, it is described that when the air belt is inflated, the pressure generated in the occupant can be received by the shoulder portion having a relatively high strength in the skeleton of the human body.

Japanese Patent Laying-Open No. 2015-123915

  However, in the above prior art, since the positions of the main inflating part and the gas supply path on the air belt are fixed, the main inflating part may restrain the chest depending on the physique of the occupant. Further, although the restraint pressure is lower than that of the shoulder portion (main inflatable portion), the restraint pressure due to the inflating of the air belt also acts on the vicinity of the sternum, which may cause a large chest deflection.

  Therefore, the above prior art has room for improvement in terms of suppressing chest deflection.

  In view of the above facts, an object of the present invention is to provide an occupant restraint device for a vehicle that reduces the pressing force that acts on the sternum of the occupant from the shoulder belt side of the three-point seat belt at the time of a frontal collision.

  The invention according to claim 1 includes a shoulder belt extending from a shoulder anchor positioned on the vehicle width direction outer upper side of the seat back constituting the vehicle seat on which the occupant is seated toward a buckle on the inner lower portion in the vehicle width direction. A point-type seat belt, a belt guide provided on the upper surface of the seat back in the vehicle width direction, through which the shoulder belt is inserted, the shoulder belt is inserted, and one end is fixed to the belt guide, Bulging means provided along the shoulder belt from the belt guide to the buckle side over the shoulder portion of the occupant and bulging toward the occupant when a frontal collision occurs.

  According to this configuration, the shoulder belt of the three-point seat belt is inserted with the belt guide disposed on the outer side in the vehicle width direction on the upper surface of the seat back. When the occupant is restrained by the three-point seat belt, the bulging means provided along the shoulder belt from the belt guide to the buckle side over the shoulder area of the occupant is at a fixed position with respect to the seat back. Therefore, regardless of the occupant's body shape, it is disposed at a position facing the shoulder of the occupant.

  When a frontal collision occurs in this state, the bulging means swells toward the passenger. As a result, the occupant's shoulder is pressed against the bulging means with high pressure and restrained. On the other hand, the shoulder belt is separated from the shoulder (occupant) by the swelling of the swelling means. Accordingly, the shoulder belt is also separated from the occupant even in the vicinity of the sternum adjacent to the buckle (below the vehicle) side of the occupant's shoulder. As described above, the bulging means provided along the shoulder belt inflates at the time of a frontal collision, so that a high pressing force is applied to the shoulder portion having a relatively high strength in the human body, and the sternum near the relatively low strength is provided. It is possible to reduce or prevent the pressing force from acting near the sternum by separating the shoulder belt from the shoulder.

  Since the vehicular occupant restraint device according to the first aspect of the present invention has the above-described configuration, it is possible to reduce or prevent the pressing force acting on the vicinity of the sternum of the occupant restrained by the three-point seat belt at the time of a frontal collision.

1 is a schematic perspective view showing a vehicle seat provided with a vehicle occupant restraint device according to a first embodiment of the present invention. It is a figure which shows the restraint state of the seatbelt with respect to the passenger | crew in the vehicle passenger restraint apparatus which concerns on 1st Embodiment of this invention, (A) is a front view of an initial state, (B) is a side view of an initial state. (C) is a side view showing a bulging completion state. (A) which shows the initial state of the bulging apparatus which concerns on 1st Embodiment of this invention is a principal part expanded sectional view, (B) is the JJ sectional view taken on the line of (A). It is a figure corresponding to Drawing 3 (A) showing the bulging start state of the bulging device concerning a 1st embodiment of the present invention. (A) which shows the bulging completion state of the bulging apparatus which concerns on 1st Embodiment of this invention is a figure corresponding to FIG. 3 (A), (B) is the KK sectional view taken on the line of (A). is there. It is a figure corresponding to Drawing 3 (A) showing the initial state of the bulging device concerning a 2nd embodiment of the present invention. It is a figure corresponding to FIG. 5 (A) which shows the bulging completion state of the bulging apparatus which concerns on 2nd Embodiment of this invention. It is a figure corresponding to Drawing 3 (A) showing the initial state of the bulging device concerning a 3rd embodiment of the present invention. It is a figure corresponding to Drawing 5 (A) which shows the bulging completion state of the bulging device concerning a 3rd embodiment of the present invention. It is a figure corresponding to Drawing 3 (A) showing the initial state of the bulging device concerning a 4th embodiment of the present invention. It is a figure corresponding to Drawing 5 (A) which shows the bulging completion state of the bulging device concerning a 4th embodiment of the present invention.

[First Embodiment]
A vehicle occupant restraint device according to a first embodiment of the present invention will be described with reference to FIGS. Moreover, each figure is typical and the thing with low relevance to this invention is abbreviate | omitting illustration. Furthermore, in FIG. 1, illustration of the passenger | crew P mentioned later is abbreviate | omitted. 1 to 5, the arrow FR indicates the front of the vehicle, the arrow OUT indicates the vehicle width direction outside, and the arrow UP indicates the vehicle upper direction. In the present embodiment, the front of the seat, the seat width direction, and the upper portion of the seat substantially coincide with the front of the vehicle, the vehicle width direction, and the upper portion of the vehicle, respectively. To do.

(Constitution)
As shown in FIG. 1, the vehicle occupant restraint device 10 for an automobile according to the present embodiment is provided on a vehicle seat 12 on the driver's seat side on the right side of the front seat of the vehicle in the cabin.

  The vehicle seat 12 includes a seat cushion 14 on which an occupant sits, a seat back 16 that supports the back of the seat occupant at the rear end of the seat cushion 14, and a head of the seat occupant disposed at the upper end of the seat back 16. And a headrest (not shown) for supporting.

  On the outer side in the vehicle width direction (of the headrest) on the upper surface 16A of the seat back 16, a belt guide 18 through which a seat belt 22 described later is inserted and guided is formed.

  The seat belt device 20 provided for the vehicle seat 12 is a so-called three-point seat belt, and includes a seat belt 22, an anchor plate 24 to which one end of the seat belt 22 is locked, and a seat belt 22. A retractor 26 having a pretensioner function that engages the other end and applies a predetermined tension to the seat belt 22, and a shoulder anchor 28 that folds the seat belt 22 at the vehicle width direction outer side top (pillar) of the vehicle seat 12. , And a buckle 32 that is fixed by fitting a tongue plate 30 inserted through the seat belt 22.

  Of the seat belt 22, a portion from the shoulder anchor 28 to the buckle 32 is referred to as a shoulder belt portion 22A, and a portion from the buckle 32 to the anchor plate 24 is referred to as a lap belt portion 22B.

  As shown in FIGS. 2A and 2B, the shoulder belt portion 22 </ b> A is formed obliquely from the front to the occupant P from the shoulder S at the upper outer side in the vehicle width direction to the waist L at the lower inner side in the vehicle width direction. Is to be restrained.

  Further, as shown in FIG. 1, the vehicle occupant restraint device 10 is provided with a bulging device 40 characterized by the present invention. One end of the bulging device 40 is fixed to the belt guide 18, and is disposed along the shoulder belt portion 22 </ b> A from the belt guide 18 to the buckle 32 side over the range of the shoulder portion S of the occupant P.

  As shown in FIG. 3A, the bulging device 40 is disposed along the shoulder belt portion 22A, and a bulging portion 42 that bulges from the shoulder belt portion 22A side to the occupant P side during a frontal collision, The drive part 44 which bulges and deforms the bulging part 42 is provided.

  As shown in FIGS. 3 (A) and 3 (B), the bulging portion 42 is a belt having a rectangular cross section in which a through hole 46 into which the seat belt 22 (shoulder belt portion 22A) is movably inserted is formed. The insertion portion 48, the resin plate 50 disposed in parallel with a predetermined distance downward (occupant side) from the belt insertion portion 48, the cushion material 52 joined to the lower surface of the resin plate 50, and the belt insertion portion 48 A pair of wall portions 54, 54 having one end joined to both side surfaces in the vehicle width direction and the other end joined to both end surfaces in the vehicle width direction of the cushion material 52 are provided. The resin plate 50 is bonded only to the front side of the cushion material 52 in the vehicle.

  As shown in FIG. 3 (B), the wall portion 54 constituting the side surface of the bulging portion 42 includes a straight portion 56 in which portions joined to the belt insertion portion 48 and the cushion material 52 are linearly formed. The intermediate portion between the straight portions 56 is a folded portion 58 that is wavy in the initial state.

  Further, the bulging portion 42 has a hole 60 surrounded by a belt insertion portion 48, a cushion material 52 (resin plate 50) and a pair of wall portions 54 (folding portions 58) in the extending direction of the seat belt 22. Is formed.

  As shown in FIG. 3A, the drive unit 44 includes a first shaft 64 in which the end of the resin plate 50 on the belt guide 18 side is fixed to the tip with a joint 62. In addition, a second shaft 70 is provided in which a guide member 66 composed of a pair of resin guide plates 67 and 68 is disposed at the tip.

  The first shaft 64 and the second shaft 70 are provided so as to be able to advance and retreat in the vehicle front-rear direction by a driving source 72 provided in a casing 71 disposed below the seat belt 22 in the belt guide 18. The drive source 72 is not particularly limited as long as it can bulge the bulging portion 42 within a predetermined time at the time of frontal collision, such as an inflator, a motor, or a spring.

  As shown in FIG. 3A, the drive source 72 is connected to the collision ECU 74. A collision sensor 76 is electrically connected to the collision ECU 74. The collision sensor 76 outputs a signal corresponding to the presence or absence of a collision to the automobile and the form of the collision to the collision ECU 74, and the collision ECU 74 outputs a drive signal to the drive source 72 when a frontal collision (inevitable) is detected. It is. In other figures, the illustration of the collision ECU 74 and the collision sensor 76 is omitted.

  On the other hand, one end of each of the guide plates 67 and 68 of the guide member 66 disposed at the tip of the second shaft 70 is coupled by a joint 78 so as to be relatively rotatable. The other end of the guide plate 67 is fixed to the lower surface 48 </ b> A of the belt insertion part 48. Furthermore, the other end of the guide plate 68 is fixed to the upper surface 50A of the resin plate 50 (the fixing position is indicated by a cross in FIGS. 3 to 5).

  The guide plates 67 and 68 have bending rigidity that does not deform when the second shaft 70 advances and retreats. Further, the resin plate 50 has a bending rigidity lower than that of the belt insertion portion 48.

  Further, since the guide member 66 is only disposed at the distal end of the second shaft 70, a wire 79 (see FIG. 5) for returning to the distal end of the second shaft 70 after bulging deformation of the bulging portion 42 described later. ) Is disposed between the joint 78 and the second shaft 70. Note that the wire 79 is housed inside the second shaft 70 in the initial state.

(Action)
The operation of the vehicle occupant restraint device 10 configured as described above will be described.
When the collision ECU 74 detects a frontal collision (unavoidable) to the automobile based on the input signal from the collision sensor 76 constituting the vehicle occupant restraint device 10, a drive signal is sent to the drive source 72 of the bulging device 40. Is output.

  As shown in FIG. 4, the drive source 72 moves the first shaft 64 and the second shaft 70 in synchronization with this drive signal in front of the vehicle. Accordingly, the vehicle rear side of the resin plate 50 moves forward of the vehicle, but the vehicle front side fixed to the cushion material 52 does not move. As a result, the resin plate 50 is shortened in the vehicle front-rear direction distance, and the vehicle rear side is bent.

  At this time, the joint 78 of the guide member 66 disposed at the tip of the second shaft 70 moves forward of the vehicle. However, the end portion of the guide plate 68 fixed to the belt insertion portion 48 does not move. Therefore, the guide member 66 moves so that the guide plates 67 and 68 open to each other, and is deformed so that the belt insertion portion 48 and the resin plate 50 are separated from each other at the fixed positions of the guide plates 67 and 68. At this time, since the belt insertion part 48 has higher bending rigidity than the resin plate 50, the resin plate 50 is bent and deformed to the vehicle lower side.

  By further moving the first shaft 64 and the second shaft 70 forward of the vehicle from this state, as shown in FIG. Bend. At this time, the guide member 66 in which one end of the guide plate 68 is locked to the resin plate 50 is detached from the tip of the second shaft 70. In addition, the bending deformation of the bulging portion 42 is allowed by the folding portion 58 of the wall portion 54 extending from the folded state in accordance with the bending deformation of the resin plate 50 (see FIG. 5B).

  As described above, the vehicle occupant restraint device 10 is configured such that the shoulder belt portion 22A extends from the belt guide 18 formed on the upper portion of the seat back 16 to the buckle 32 side, along the shoulder belt portion 22A. The bulging part 42 provided over the vehicle is bulged to the vehicle lower side (occupant P) side than the seat belt 22 by driving of the driving part 44 (see FIG. 2C).

  Accordingly, as shown in FIG. 2C, the bulging portion 42 bulged from the seat belt 22 (shoulder belt portion 22A) presses the shoulder S of the occupant P. Thereby, in the passenger | crew's P human body, the shoulder part S with comparatively high intensity | strength can be restrained.

  On the other hand, the seat belt 22 is separated from the shoulder portion S of the occupant P by the bulging bulging portion 42 being interposed between the shoulder belt portion 22A and the occupant P. As a result, the seat belt 22 is also separated from the occupant P even in the sternum periphery B located under the shoulder S of the occupant P.

  As a result, the seat belt 22 is separated from the sternum periphery B of the occupant P at the time of a frontal collision, so that the pressing force acting on the sternum periphery B having a relatively low strength in the human body of the occupant P from the seat belt 22 is reduced. The chest deflection of the occupant P can be reduced or prevented.

  In particular, the vehicle occupant restraint device 10 is provided with a belt guide 18 on the outer side in the vehicle width direction of the upper surface 16A of the seat back 16, and forms a bulging portion 42 ranging from the belt guide 18 to the shoulder S of the occupant P. ing. Therefore, the bulging portion 42 is disposed at a fixed position with respect to the seat back 16 and can restrain the shoulder portion S regardless of the physique of the occupant P. That is, regardless of the physique of the occupant P, it is possible to reduce or prevent the pressing force from acting near the sternum of the occupant P, and to reliably reduce or prevent the chest deflection of the occupant P.

  Furthermore, since the bulging device 40 has a mechanical configuration, the drive source 72 is driven to return the first shaft 64 and the second shaft 70 to the initial positions, and the wire 79 is wound around the second shaft 70 side. The joint 78 of the guide member 66 can be returned to the tip position of the second shaft 70. That is, since the inflating device 40 is a mechanical configuration, it can be reused unlike an airbag.

[Second Embodiment]
A vehicle occupant restraint device 80 according to a second embodiment of the present invention will be described with reference to FIGS. 6 and 7. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Since only the bulging device 82 is different from the first embodiment, only that portion will be described.

(Constitution)
As shown in FIG. 6, the vehicle occupant restraint device 80 is configured such that the bulging device 82 extends the seat belt 22 in the hole 60 formed between the lower surface 48 </ b> A of the belt insertion portion 48 and the cushion material 52. A plurality of, for example, three linear plate members 84A to 84C are arranged at predetermined intervals along the direction.

  Specifically, one end of each of the plate members 84A to 84C is fixed to a wire 86 that is routed on the resin plate 50 at fixed positions P1 to P3 that are spaced apart from each other along the extending direction of the seat belt 22. . Further, the other ends of the plate members 84 </ b> A to 84 </ b> C are fixed to the lower surface 48 </ b> A of the belt insertion portion 48 at fixed positions Q <b> 1 to Q <b> 3 that are spaced apart from each other along the extending direction of the seat belt 22. At this time, the plate members 84A to 84A are fixed such that the fixing positions P1 to P3 with respect to the wire 86 are on the vehicle front side (the buckle 32 side along the seat belt extending direction) with respect to the fixing positions Q1 to Q3 with respect to the belt insertion portion 48, respectively. 84C is arranged.

  The wire 86 arranged on the resin plate 50 extends from a winding device 88 disposed in a casing 71 formed in the belt guide 18. The winding device 88 is electrically connected to the collision ECU 74. Therefore, when a drive signal is input from the collision ECU 74 to the winding device 88, the wire 86 is wound to the vehicle rear side. In addition, although the drive means of the winding device 88 is not particularly limited, for example, an inflator, a spring, a motor, or the like is conceivable.

(Function)
The operation of the vehicle occupant restraint device 80 configured as described above will be described.

  When the collision ECU 74 detects a frontal collision (unavoidable) to the automobile based on an input signal from the collision sensor 76 constituting the vehicle occupant restraint device 80, a drive signal is sent to the winding device 88 of the bulging device 82. Is output.

  As a result, as shown in FIG. 7, the winding device 88 is driven to wind the wire 86 (see arrow A), thereby moving the wire 86 toward the belt guide 18 (rear side of the vehicle) (see arrow B). . Accordingly, the plate members 84A to 84C, one end of which is fixed to the wire 86 at the fixing positions P1 to P3, rotate downward in the vehicle (occupant P side) around the fixing positions Q1 to Q3 with respect to the belt insertion portion 48 (arrow C). reference). As a result, the resin plate 50 is deformed so as to be separated from the belt insertion portion 48 toward the vehicle lower side. That is, the resin plate 50 is deformed so as to have a convex shape on the vehicle lower side.

  Therefore, the vehicle occupant restraint device 80 can bulge the bulging portion 42 below the seat belt 22 by driving the winding device 88. Thereby, there exists an effect similar to the passenger | crew restraint apparatus 10 for vehicles of 1st Embodiment.

[Third Embodiment]
A vehicle occupant restraint device 100 according to a third embodiment of the present invention will be described with reference to FIGS. 8 and 9. The same components as those in the first and second embodiments are denoted by the same reference numerals, and detailed description thereof is omitted. Since only the bulging device 102 is different from the first and second embodiments, only that portion will be described.

(Constitution)
As shown in FIG. 8, the bulging device 102 of the vehicle occupant restraint device 100 includes a plurality of guide members 66 of the first embodiment, for example, a wire 86 extending from the winding device 88 of the second embodiment. Three are attached.

  Specifically, a plurality of, for example, three guide members 66A to 66C are disposed in the hole portion 60 of the bulging portion 42 of the bulging device 102 at predetermined intervals along the seat belt extending direction. ing. Specifically, the joints 78A to 78C of the guide members 66A to 66C are fixed to the wire 86 at a predetermined interval along the seat belt extending direction. One end of each of the guide plates 67A to 67C of the guide members 66A to 66C is fixed to the lower surface 48A of the belt insertion portion 48 at the fixing positions Q1 to Q3, and one end of the guide plates 68A to 68C is resin from S1 to S3. It is fixed to the upper surface 50A of the plate 50.

  In the initial state, the guide plates 67A to 67C and 68A to 68C have the joints 78A to 78C on the vehicle front side (the seat belt extension) than the fixing positions Q1 to Q3 for the belt insertion portion 48 and the fixing positions S1 to S3 for the resin plate 50, respectively. It is arranged so as to be the buckle 32 side) along the existing direction.

(Function)
The operation of the vehicle occupant restraint device 100 configured as described above will be described.

  When the collision ECU 74 detects a frontal collision (unavoidable) to the automobile based on an input signal from the collision sensor 76 constituting the vehicle occupant restraint device 100, a drive signal is sent to the winding device 88 of the bulging device 102. Is output.

  As a result, as shown in FIG. 9, the winding device 88 is driven, and the joints 78A to 78C fixed to the wire 86 are moved to the belt guide 18 side by winding the wire 86 (see arrow A) ( (See arrow B). As a result, the guide plates 67A to 67C, whose one ends are fixed to the belt insertion portion 48 at the fixed positions Q1 to Q3, are rotated about the joints 78A to 78C toward the upper side of the vehicle (in the arrow D direction), and the fixed position S1. The guide plates 68A to 68C whose one ends are fixed to the resin plate 50 in S3 are rotated to the vehicle lower side (occupant P) side (arrow E direction) around the joints 78A to 78C.

  Here, since the belt insertion part 48 has bending rigidity higher than the resin board 50, it deform | transforms so that the resin board 50 may become convex shape at the vehicle lower side.

  That is, the vehicle occupant restraint device 100 can bulge the bulging portion 42 to the vehicle lower side (occupant P) side than the seat belt 22 by driving the winding device 88. Thereby, there exists an effect similar to the passenger | crew restraint apparatus 10 for vehicles of 1st Embodiment.

[Fourth Embodiment]
A vehicle occupant restraint device 120 according to a fourth embodiment of the present invention will be described with reference to FIGS. 10 and 11. The same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. Since only the bulging device 122 is different from the first embodiment, only that portion will be described.

(Constitution)
As shown in FIG. 10, the bulging device 122 forms a coil-shaped wiring pattern 124 on the lower surface 48 </ b> A of the belt insertion part 48 and forms a coil-shaped wiring pattern 126 on the upper surface 50 </ b> A of the resin plate 50. Is. The wiring patterns 124 and 126 are connected to an energization device 132 provided inside the housing 71 via resistors 128 and 130. In addition, a collision ECU 74 is connected to the energization device 132. 10 and 11, the wiring patterns 124 and 126 are shown separated from the lower surface 48A of the belt insertion portion 48 and the upper surface 50A of the resin plate 50 for convenience of explanation.

  The wiring patterns 124 and 126 are configured to generate a magnetic field having a reverse polarity when energized from the energization device 132.

(Function)
When the collision ECU 74 detects a frontal collision (unavoidable) to the automobile based on an input signal from the collision sensor 76 constituting the vehicle occupant restraint device 120, a drive signal is sent to the energization device 132 of the bulging device 122. Is output.

  As a result, as shown in FIG. 11, current flows from the energization device 132 to the coiled wiring patterns 124 and 126, respectively. As a result, the respective wiring patterns 124 and 126 have opposite polarities. For example, in the wiring pattern 124, the vehicle lower side has S polarity, and in the wiring pattern 126, the vehicle upper side has S polarity. As a result, the magnetic force in the direction of separating from each other acts on the belt insertion portion 48 in which the wiring pattern 124 is formed and the resin plate 50 in which the wiring pattern 126 is formed. Here, since the bending rigidity of the resin plate 50 is lower than the bending rigidity of the belt insertion portion 48, the resin plate 50 is deformed so as to be convex downward in the vehicle.

  That is, the vehicle occupant restraint device 100 can be bulged to the vehicle lower side (occupant P) side than the seat belt 22 by energization of the energization device 132. Thereby, there exists an effect similar to the passenger | crew restraint apparatus 10 for vehicles of 1st Embodiment.

[Others]
In the first to fourth embodiments, the vehicle seat 12 on the right side of the vehicle front seat (driver's seat side) has been described, but the vehicle occupant restraint device 10 also applies to the vehicle seat on the left side of the vehicle front seat (passenger seat side). , 80, 100 can be similarly applied.

Moreover, although the bulging device according to the first to fourth embodiments is driven by a mechanical configuration of a shaft or a wire or electromagnetic force, it is a so-called airbag, that is, corresponds to the hole 60 by an inflator. The structure which expands the part to perform may be sufficient.
Furthermore, although the structure which provided the shoulder anchor in the pillar was demonstrated in 1st-4th embodiment, it is applicable also to what is called a belt-in seat which provided the shoulder anchor and the retractor in the seat back.

10, 80, 100, 120 Vehicle occupant restraint device 12 Vehicle seat 16 Seat back 16A Upper end surface (upper surface)
18 Belt guide 20 Seat belt device (3-point seat belt)
22 seat belt 22A shoulder belt 28 shoulder anchor 32 buckle 40, 82, 102, 122 bulging device (bulging means)
P Crew S Crew shoulder

Claims (1)

A three-point seat belt including a shoulder belt extending from a shoulder anchor positioned on the outer side in the vehicle width direction of the seat back constituting the vehicle seat on which the occupant is seated toward a buckle on the inner lower side in the vehicle width direction;
A belt guide provided on the outer side in the vehicle width direction on the upper surface of the seat back, through which the shoulder belt is inserted;
The shoulder belt is inserted, and one end is fixed to the belt guide, and is provided along the shoulder belt from the belt guide to the buckle over the shoulder of the occupant. Bulging means bulging to the side,
A vehicle occupant restraint device.