JP6357677B2 - Airbag device for saddle riding type vehicle - Google Patents

Description

  The present invention relates to an airbag device for a saddle-ride type vehicle.

  2. Description of the Related Art Conventionally, as an airbag device for a saddle-ride type vehicle such as a motorcycle, there is a structure in which an airbag includes a roll-shaped folded portion and a bellows-shaped folded portion, and the airbag is deployed from a retainer at a rear portion of a straddling space (for example, , See Patent Document 1).

JP 2003-327183 A

  By the way, when an airbag is arrange | positioned ahead of a vehicle, the structure which can expand | deploy an airbag perpendicularly | vertically with respect to the advancing direction of a vehicle, and can improve a passenger | crew's comfortability is desired.

  The present invention has been made in view of the above circumstances, and provides an airbag device for a saddle-ride type vehicle that can improve the occupant's comfortability even when the airbag is disposed in front of the vehicle.

In order to achieve the above object, the present invention employs the following means.
That is, the airbag device for a saddle-ride type vehicle according to claim 1 forms a straddling space (19) by covering the rear surface of the head pipe (12) and in front of a seat (16) on which an occupant sits. In the airbag device (30) of the saddle riding type vehicle, the vehicle body cover (CV) and a retainer (31) provided in the straddle space (19) and accommodating the airbag (40) are provided. 31) is provided so as to be inclined rearward and upward along the vehicle body cover (CV), and the airbag (40) has a center line (Lc) along the inclination of the retainer (31) in a side view. In the upper part of the main frame (13) that bulges in a direction inclined forward with respect to the head pipe (12) and extends downward from the head pipe (12), Stay (13A) is provided which projects rearward so as to be gradually narrowed toward the rear, the airbag (40) is folded toward the vehicle traveling direction after extending upward at its base end side down And a linear deployment part (42) that is folded in a bellows shape adjacent to the slope deployment part (41) on the front end side of the airbag (40). It is characterized by that.
The straddle-type vehicle includes all vehicles on which the driver rides across the vehicle body, and includes not only motorcycles (including motorbikes and scooter type vehicles) but also three-wheelers (front and rear two wheels). Other examples include a front two-wheel and a rear one vehicle) or a four-wheel vehicle.

  The airbag device for a saddle riding type vehicle according to claim 2, wherein a lower end of the retainer (31) is disposed above a lower end of the seat (16).

The airbag device for a saddle riding type vehicle according to claim 3 , wherein the airbag (40) is disposed between the inclined deployment portion (41) and the linear deployment portion (42). It is characterized by including the inclination control part (43) folded in the direction opposite to the direction of folding back.

The airbag apparatus for a saddle riding type vehicle according to claim 4 , wherein the inclined deployment portion (41) is disposed at a rear portion of the retainer (31), and the linear deployment portion (42) is disposed on the retainer (31). ).

According to the first aspect of the present invention, even if the retainer is provided to be inclined rearward and upward, the airbag is inflated in a direction inclined to the front side with respect to the center line along the inclination of the retainer. Can be developed in a direction substantially perpendicular to the vehicle traveling direction. Therefore, even if the retainer is provided so as to be inclined rearward and upward, it is possible to secure a wide straddling space, so that the occupant comfort can be improved. In addition, when the inclined deployment part is arranged upstream of the gas sent from the inflator (base end side of the airbag), the airbag deployment direction is determined by deploying the inclined deployment part first. Therefore, the enlargement of the expansion volume of the airbag can be suppressed. Thereby, since an airbag can be made small, a retainer can also be made small. As a result, a wide stride space can be secured and passenger occupancy is improved, so that occupant comfort is improved.

  According to the second aspect of the present invention, since the retainer is disposed above the seat, it is possible to ensure a wide stride space and improve the comfortability of the occupant.

According to the invention described in claim 3 , the direction in which the airbag is deployed relative to the vehicle traveling direction can be appropriately controlled by the inclination restricting portion. Therefore, the angle of the retainer can be appropriately set so that the straddle space can be arranged as large as possible. Therefore, the occupant's ease of boarding / exiting is improved, so that the occupant's comfort is improved.

According to the fourth aspect of the present invention, since the straight development portion and the inclined development portion are respectively divided into the front and rear, the straight development portion can be efficiently filled with the inflator gas. Therefore, the airbag can be quickly deployed.

1 is a left side view of a motorcycle according to an embodiment of the present invention. It is a left view of the part in which the airbag apparatus was mounted in the said motorcycle. FIG. 3 is a view as seen from an arrow A in FIG. 2. It is BB sectional drawing of FIG. It is a perspective view which shows the retainer in which the said airbag is accommodated with an inflator. It is a principal part enlarged view of FIG. It is a left view which shows the state in which the airbag was accommodated in the retainer in the said airbag apparatus. FIG. 6 is a left side view showing a process in which the airbag is inflated and deployed in the motorcycle. FIG. 9 is a left side view illustrating a process of inflating and deploying the airbag, continued from FIG. 8. FIG. 10 is a left side view illustrating the process of inflating and deploying the airbag, continued from FIG. 9. FIG. 11 is a left side view illustrating a process of inflating and deploying the airbag, continued from FIG. 10. FIG. 12 is a left side view showing the process of completing the inflation and deployment of the airbag, continued from FIG. 11.

  Embodiments of the present invention will be described below with reference to the drawings. Note that the front, rear, left, and right directions in the following description are the same as those in the vehicle unless otherwise specified. In the drawings used for the following explanation, an arrow FR indicating the front of the vehicle, an arrow LH indicating the left side of the vehicle, and an arrow UP indicating the upper side of the vehicle are shown.

FIG. 1 is a left side view of a motorcycle 1 (saddle-ride type vehicle) according to an embodiment of the present invention. Hereinafter, the motorcycle 1 may be simply referred to as a vehicle.
FIG. 1 shows a scooter type motorcycle 1 to which an embodiment of the present invention is applied. The motorcycle 1 includes a swing unit 4 in which an engine 2 and a power transmission mechanism 3 are integrated. The motorcycle 1 rotatably supports the rear wheel 5 at the rear part of the swing unit 4 and arranges the front wheel 6 in front of the swing unit 4. The front wheel 6 is rotatably supported at the lower part of the pair of left and right front forks 7. A bridge 8 is installed on top of the pair of left and right front forks 7. A steering shaft 9 as a steering shaft is erected at the center of the bridge 8 in the vehicle width direction.

  A bar handle 10 is provided above the steering shaft 9. The bar handle 10 is composed of a single pipe material extending in the vehicle width direction. The steering system of the motorcycle 1 mainly includes a front wheel 6, a front fork 7, a steering shaft 9, a bar handle 10, and the like.

  The steering shaft 9 is rotatably supported by a head pipe 12 provided at a front end of a vehicle body frame 11 in which a plurality of frame members are integrated by welding or the like. The vehicle body frame 11 includes a pair of left and right sides extending to the rear upper side after connecting to the head pipe 12, a main frame 13 extending downward from the head pipe 12, and connecting to a lower side surface of the main frame 13 to extend rearward. A frame 14 and a pair of left and right seat frames 15 connected to the upper end of the rear portion of the side frame 14 and extending rearward and upward are provided. Strictly speaking, the main frame 13 is slightly inclined with respect to the vertical direction, and extends rearward and downward from the head pipe 12.

The swing unit 4 is supported by a lower rear portion of the pair of left and right side frames 14 via a link member 14A, and can swing in the vertical direction. An air cleaner 28 is provided on the upper part of the swing unit 4. The air cleaner 28 is connected to the engine 2 via a connecting tube, a throttle body, and an intake pipe.
A seat 16 on which an occupant sits is disposed above the swing unit 4. The seat 16 extends in the front-rear direction, and a main seat 17 on which a driver sits and a pillion seat 18 on which a passenger sits are integrally formed.

  The motorcycle 1 is covered with a vehicle body cover CV composed of a plurality of exterior covers made of a resin material. A part of the vehicle body cover CV covers the rear surface of the head pipe 12 and is disposed in front of the seat 16 to form a straddling space 19. A front cover 21 is disposed above the front wheel 6 and in front of the head pipe 12. A pair of left and right front side covers 22 are connected to the rear edge portions of both sides of the front cover 21.

  The front cover 21 is formed in a streamline shape that tapers toward the front of the vehicle in a top view. A visor 21 </ b> A is provided on the upper portion of the front cover 21. The visor 21A rises rearward and upward from the front to the rear in a side view, and traveling wind from the front flows rearward and upward by the visor 21A. The front cover 21 integrally includes a front light and left and right turn signals.

  The space between the left and right rear portions of each of the pair of left and right front side covers 22 is covered with an inner cover 23 whose upper side extends in the vehicle width direction, and its lower side is covered with a center cover 24. The rear wall portion of the inner cover 23 extends in the vertical direction along the steering shaft 9, and the lower end of the rear wall portion is located behind the lower end of the stay 13A. On the other hand, the center cover 24 is connected to the lower end of the rear wall portion of the inner cover 23 and extends rearward, and the rear end of the center cover 24 reaches below the front end of the seat 16.

  Behind the center cover 24 and the front side cover 22 are provided a pair of left and right rear side body covers 29 that are smoothly connected to the rear part of the center cover 24 and the rear part of the front side cover 22 and extend rearward. The pair of left and right rear side body covers 29 are respectively disposed below the seat 16 and extend long along the vehicle longitudinal direction, and extend from the rear part of the center cover 24 and the rear part of the front side cover 22 to the upper part of the rear wheel 5.

  Left and right step floors 20 that are spaced apart from the center in the vehicle width direction are disposed at the lower center of the vehicle in the front-rear direction. The step floor 20 has a certain width in the vehicle width direction, and is provided on the upper surface of the step floor 20 so that a passenger can put his / her foot on it. A pair of left and right lower side body cover portions 25 that rise upward and smoothly extend across the rear portion of the front side cover 22 and the front portion of the rear side body cover 29 are integrally formed at the vehicle width direction inner end portion of the step floor 20. Provided. The lower side body cover portion 25 extends in the longitudinal direction of the vehicle and extends from the main frame 13 to the lower side of the main seat 17.

  On the other hand, an under cowl portion 26 that extends toward the center in the vehicle width direction as it goes downward is integrally provided at the outer end portion of the step floor 20 in the vehicle width direction. In the present embodiment, the lower side body cover portion 25 and the under cowl portion 26 are integrally assembled on the step floor 20 separately from each other. However, all the members may be integrally molded. Absent.

  Above the center cover 24 and between the bar handle 10 and the seat 16, a straddling space 19 through which a passenger passes his / her foot for getting on is formed. The driver (occupant) puts his / her foot through the straddling space 19, sits on the seat 16 (main seat 17), and places his / her feet on the left and right step floors 20 provided at the lower center in the vehicle longitudinal direction. It is possible to get on.

  The airbag device 30 is provided in the straddling space 19. The airbag device 30 includes a retainer 31, an airbag 40 accommodated in the retainer 31, and an inflator 32 that supplies gas so that the airbag 40 expands from the retainer 31. The airbag device 30 is covered by the inner cover 23.

  The motorcycle 1 is provided with an acceleration sensor (not shown) that detects an impact. The acceleration sensor is electrically connected to a control unit (not shown), and the control unit is electrically connected to the inflator 32. When a collision occurs, the impact acceleration data detected by the acceleration sensor is transmitted to the control unit, and the control unit instantaneously determines whether the airbag 40 is activated or deactivated based on the impact acceleration data. If it is determined that the operation is performed, an ignition current is sent to the inflator 32, the inflator 32 is operated to generate gas in the airbag 40, and the airbag 40 is inflated and deployed.

For example, when it is assumed that the motorcycle 1 on which the occupant rides collides with a collision target (for example, an automobile) on the traveling direction side, the occupant tries to move toward the front of the vehicle. In this case, when the collision with the collision target is detected by the acceleration sensor, the gas is sent into the airbag 40 via the inflator 32 inside the retainer 31. Thereby, the airbag 40 is inflated and deployed from the retainer 31. The airbag 40 extends in the vehicle vertical direction in front of the occupant and is deployed with a predetermined thickness in the vehicle front-rear direction to reduce occupant injury. Although details will be described later, the airbag 40 bulges in a direction inclined forward with respect to the center line Lc along the inclination of the retainer 31 in a side view. Here, the center line Lc along the inclination of the retainer 31 is a straight line passing through the center of the retainer 31 and parallel to the head pipe 12.
Hereinafter, the “center line Lc along the inclination of the retainer 31” may be simply referred to as “center line Lc”.

  FIG. 2 is a left side view of a portion where the airbag device 30 is mounted in the motorcycle 1. FIG. 3 is a view taken in the direction of arrow A in FIG. 2 (viewed from the direction along the center line Lc). 4 is a cross-sectional view taken along line BB in FIG. In FIG. 2, the illustration of the inner cover 23 is omitted for convenience.

  As shown in FIGS. 2 to 4, a stay 13 </ b> A is provided in the upper portion of the main frame 13 near the head pipe 12. The stay 13A protrudes toward the rear of the vehicle so as to become gradually narrower toward the rear of the vehicle.

  The inflator 32 has a disk shape. As shown in FIG. 3, only one inflator 32 is disposed at the bottom center of the retainer 31. When viewed from the direction along the center line Lc, the inflator 32 has its upper portion (gas supply unit) exposed to the inside of the retainer 31 when the airbag 40 is not accommodated in the retainer 31.

FIG. 5 is a perspective view showing the retainer 31 in which the airbag 40 is accommodated together with the inflator 32. 6 is an enlarged view of a main part of FIG.
As shown in FIGS. 5 and 6, the retainer 31 includes a main body portion 34, a lid portion 35, and a storage portion 36.

The main body 34 has an opening 34a at its upper end. The main body 34 is a box-shaped member that houses the airbag 40 (see FIG. 7).
The lid portion 35 is provided at the upper end portion of the main body portion 34. The lid portion 35 is configured to open upon receiving a reaction force when the airbag 40 is inflated and deployed.
The accommodating portion 36 is provided at the bottom of the main body portion 34. The inflator 32 is accommodated in the accommodating portion 36.

  The number of inflators 32 accommodated in the accommodating portion 36 is not limited to one and may be two or more. However, from the viewpoint of reducing the size and weight of the airbag device 30, it is preferable that only one inflator 32 is accommodated in the accommodating portion 36.

FIG. 7 is a view showing a state in which the airbag 40 is accommodated in the retainer 31 in the airbag device 30. In addition, in FIG. 7, illustration of the cover part 35 of the retainer 31 is abbreviate | omitted for convenience.
As shown in FIG. 7, the airbag 40 is accommodated in a state in which a lower portion (gas receiving portion 44) is attached to an upper portion (gas supply portion) of the inflator 32 and folded in the retainer 31. The airbag device 30 is configured such that when the gas is fed into the airbag 40 by the inflator 32, the airbag 40 is inflated and deployed.

  The airbag 40 includes an inclined deployment part 41, a linear deployment part 42, an inclination regulation part 43, and a gas receiving part 44. From the upstream side of the gas fed from the inflator 32, the gas receiving part 44, the inclined development part 41, the inclination regulating part 43, and the linear development part 42 are arranged in this order. Here, in the airbag 40, the side of the inflator 32 is the base end side of the airbag 40, and the side opposite to the inflator 32 is the tip side of the airbag 40. A gas receiving portion 44 is disposed on the proximal end side of the airbag 40, and a linear deployment portion 42 is disposed on the distal end side of the airbag 40.

  The inclined deployment part 41 is disposed at the rear part of the retainer 31. The inclined development part 41 is folded in one direction toward the vehicle traveling direction V facing left in the figure. Specifically, the inclined deployment part 41 has an L shape in a side view, and is folded counterclockwise in the figure starting from a connection part with the gas receiving part 44. The inclined deployment part 41 extends upward on the base end side thereof, then turns back toward the vehicle traveling direction V and extends downward. Thereby, when the inflator gas is filled, the inclined development part 41 inclines each of the inclination regulation part 43 and the linear development part 42 forward Vf with respect to a direction (vertical direction) orthogonal to the vehicle traveling direction V. Applying force to act.

  The inclined deploying portion 41 includes a first deploying portion 41a whose one end is connected to the gas receiving portion 44, a second deploying portion 41b whose one end is connected to the other end of the first deploying portion 41a, and a second deploying portion 41b. It has the 3rd expansion part 41c by which one end is connected to the other end, and the 4th expansion part 41d by which one end is connected to the other end of the 3rd expansion part 41c.

The first deployment portion 41a is linear in a side view, and is inclined with respect to the vehicle traveling direction V starting from a connection portion with the gas receiving portion 44 and extends downward in the rear direction.
The second deployment part 41b is linear in a side view, and starts from the connection part with the first deployment part 41a and is along the inner wall surface of the rear part of the main body 34 of the retainer 31 and is generally in relation to the first deployment part 41a. It inclines with respect to the vehicle traveling direction V so as to be orthogonal and extends rearward and upward.
The third deploying portion 41c starts from the connecting portion with the second deploying portion 41b, and inclines with respect to the vehicle traveling direction V so as to be substantially parallel to the first deploying portion 41a in a side view and extends forward and upward. .
The fourth deployment portion 41d is linear in a side view, and is inclined with respect to the vehicle traveling direction V so as to be substantially parallel to the second deployment portion 41b, starting from the connection portion with the third deployment portion 41c. It extends to the front lower side.

  The inclination restricting part 43 is disposed between the inclination developing part 41 and the linear developing part 42. The inclination restricting portion 43 is folded in a direction opposite to the direction in which the inclined unfolding portion 41 is folded back. Specifically, one end of the inclination restricting portion 43 is connected to the other end of the fourth expanding portion 41 d of the inclined expanding portion 41, and the other end is connected to one end of the linear expanding portion 42. The inclination restricting portion 43 is linear in a side view, and starts from the connecting portion with the fourth developing portion 41d as a starting point with respect to the first developing portion 41a so that the distance from the first developing portion 41a gradually increases. It inclines and extends forward and upward. The inclination restricting portion 43 is folded clockwise in the figure starting from the connecting portion with the fourth developing portion 41d.

  Thereby, the inclination control part 43 makes the force which makes the linear expansion | deployment part 42 incline back Vr with respect to the direction (vertical direction) orthogonal to the vehicle advancing direction V, when inflator gas is filled. That is, when the inflator gas is filled, the tilt restricting portion 43 applies a force in a direction that cancels the tilt acting force by the tilt deploying portion 41, restricts the tilt acting force, and the vehicle traveling direction V of the linear deploying portion 42. Controls the deployment direction for.

  The straight development part 42 is disposed at the front part of the retainer 31. The straight deployment portion 42 is disposed adjacent to the inclined deployment portion 41 on the distal end side of the airbag 40. The straight line unfolding part 42 is configured to include a plurality of straight line parts, and the plurality of straight line parts are folded in a so-called bellows shape arranged in a zigzag manner. One end of the linear development portion 42 is connected to the other end of the inclination regulating portion 43, and the other end is close to the upper end portion of the retainer 31.

Hereinafter, the effect | action of the airbag apparatus 30 which concerns on this embodiment is demonstrated using FIGS.
FIG. 8 is a left side view showing a process in which the airbag 40 is inflated and deployed in the motorcycle 1. FIG. 9 is a left side view showing the process of inflating and deploying the airbag 40 following FIG. FIG. 10 is a left side view showing the process of inflating and deploying the airbag 40 following FIG. 9. FIG. 11 is a left side view showing the process of inflating and deploying the airbag 40 following FIG. FIG. 12 is a left side view showing the process of inflating and deploying the airbag 40, which is continued from FIG. 8 to 12, illustration of the lid 35 is omitted for convenience.

  As shown in FIG. 8, when the collision between the motorcycle 1 and the automobile is detected by an acceleration sensor (not shown), gas is sent into the airbag 40 via the inflator 32 inside the retainer 31. . Thereby, the inflation and deployment of the airbag 40 is started.

  When the inflator gas is filled in the first deployment portion 41 a and the second deployment portion 41 b (see FIG. 7) of the inclined deployment portion 41 of the airbag 40, the retainer 31 causes the inclined deployment portion 41 of the airbag 40 to move. A part and a part of the linear development part 42 protrude. At this time, the airbag 40 is temporarily along the center line Lc in order to avoid the bar handle 10 due to the action of the first deployment portion 41a and the second deployment portion 41b of the inclined deployment portion 41 to extend. A force extending obliquely upward acts, and the straight development portion 42 is directed in a direction along the center line Lc. Thereafter, the airbag 40 has a front Vf with respect to the center line Lc (see FIG. 7) due to the action of the third deployment portion 41c, the fourth deployment portion 41d, and the tilt regulation portion 43 of the tilt deployment portion 41 to extend. A force for inclining is applied, and the straight line development portion 42 facing the direction along the center line Lc is directed forward Vf (see FIG. 7) with respect to the center line Lc.

  Next, as shown in FIG. 9, when the inflator gas is filled in the third deployment portion 41 c (see FIG. 7) in addition to the first deployment portion 41 a and the second deployment portion 41 b of the inclined deployment portion 41 of the airbag 40. From the retainer 31, a part of the inclined deployment portion 41, the inclination regulating portion 43, and the linear deployment portion 42 of the airbag 40 protrude.

  In the airbag 40, the inclined deployment part 41 extends rearward and upward with respect to the vertical direction starting from the upper end of the retainer 31, and the inclination regulating part 43 extends forward and upward with respect to the vertical direction starting from a connection part with the inclined deployment part 41. And it becomes the attitude | position which the linear expansion | deployment part 42 extends to the front upper direction with respect to the perpendicular direction from the connection part with the inclination control part 43 as a starting point. Further, the airbag 40 has a front portion of the straight deployment portion 42, the inclination regulating portion 43, and the inclination deployment portion 41 located on the front side with respect to the center line Lc in a side view, and the front and rear central portions and the rear portion of the inclination deployment portion 41. Is a posture positioned on the rear side with respect to the center line Lc in a side view.

  Next, as shown in FIG. 10, in addition to the first deploying portion 41a, the second deploying portion 41b, and the third deploying portion 41c of the inclined deploying portion 41 of the airbag 40, the fourth deploying portion 41d (see FIG. 7) is inflated. When the gas is filled, an inclined deployment part 41, an inclination regulating part 43, and a linear deployment part 42 constituting the airbag 40 protrude from the retainer 31.

  In the airbag 40, the inclined deployment part 41 extends rearward and upward with respect to the vertical direction starting from the upper end of the retainer 31, and the inclination regulating part 43 extends forward and downward with respect to the vertical direction starting from the connection part with the inclined deployment part 41. In addition, the straight development portion 42 has a posture that extends forward in a direction substantially orthogonal to the vertical direction starting from the connection portion with the inclination regulating portion 43. Strictly speaking, the lower part of the inclined deployment part 41 starts from the upper end of the retainer 31 and extends rearward and upward with respect to the vertical direction, and the central part connected to the lower part extends in a direction parallel to the vertical direction, and The upper portion connected to the central portion is curved so that it extends forward and upward with respect to the vertical direction. Further, the airbag 40 is configured such that the straight deployment portion 42, the tilt regulating portion 43, and the front portion of the tilt deployment portion 41 are located on the front side with respect to the center line Lc in a side view, and the rear portion of the tilt deployment portion 41 in a side view. The posture is located on the rear side with respect to the center line Lc.

  Next, as shown in FIG. 11, when the inflator gas is filled in the inclination restricting portion 43 in addition to the inclination deploying portion 41 of the airbag 40, the airbag 40 is moved in the vertical direction by the action of the inclination restricting portion 43. On the other hand, a force for inclining to the rear Vr (see FIG. 7) acts, and the acting force by the inclined unfolding portion 41 is restricted. Thus, the airbag 40 is controlled so as not to bulge forward Vf (see FIG. 7) with respect to the vertical direction.

  In the airbag 40, the inclined deployment part 41 extends rearward and upward with respect to the vertical direction starting from the upper end of the retainer 31, and the inclination regulating part 43 extends forward with respect to the vertical direction starting from the connecting part with the inclined deployment part 41. In addition, the straight development portion 42 is configured to extend forward and downward with respect to the vertical direction starting from the connection portion with the inclination regulating portion 43. Strictly speaking, the lower part of the inclined deployment part 41 starts from the upper end of the retainer 31 and extends rearward and upward with respect to the vertical direction, and the central part connected to the lower part extends in a direction parallel to the vertical direction, and The upper portion connected to the central portion is curved so that it extends forward and upward with respect to the vertical direction.

  Then, as shown in FIG. 12, when the inflator gas is filled in the straight deployment portion 42 in addition to the tilt deployment portion 41 and the tilt regulation portion 43 of the airbag 40, the airbag 40 has an action of the tilt deployment portion 41. And the expansion | extension direction of the linear expansion | deployment part 42 is controlled vertically upward by the effect | action of the inclination control part 43, and the linear expansion | deployment part 42 expand | swells and expands linearly toward the perpendicular upper direction.

  If the airbag includes a roll-shaped folded portion and a bellows-like folded portion, and the roll-shaped folded portion surrounds the bellows-like folded portion, the roll-shaped folded portion can be rolled even if the bellows-like folded portion is filled with inflator gas. Since the folding of the bellows-like folded portion is blocked by the folded portion, the airbag may not be quickly deployed. On the other hand, in this embodiment, since the linear development part 42 is arranged at the upper part of the retainer 31, when the inflator gas is filled in the linear development part 42, there is nothing that blocks the development of the linear development part 42, The airbag 40 can be quickly deployed.

  The airbag 40 has a posture in which an upper portion and a central portion thereof bulge in a direction inclined forward with respect to the center line Lc in a side view. As a result, the airbag 40 is deployed in a vertical direction as a whole, that is, in a direction perpendicular to the traveling direction of the vehicle.

As described above, the airbag device 30 of the motorcycle 1 according to the present embodiment forms the straddling space 19 by being disposed in front of the seat 16 that covers the rear surface of the head pipe 12 and seats an occupant. In an airbag device 30 of a saddle-ride type vehicle provided with a cover CV and a retainer 31 provided in the straddling space 19 and accommodating the airbag 40, the retainer 31 is inclined rearward and upward along the vehicle body cover CV. The airbag 40 bulges in a direction inclined forward with respect to the center line Lc along the inclination of the retainer 31 in a side view.
According to the present embodiment, even if the retainer 31 is provided to be inclined rearward and upward, the airbag 40 bulges in a direction inclined forward with respect to the center line Lc along the inclination of the retainer 31. 40 can be developed in a direction substantially perpendicular to the vehicle traveling direction. Therefore, even if the retainer 31 is provided to be inclined rearward and upward, the straddle space 19 can be secured widely, so that the occupant comfort can be improved.

  Further, in the airbag device 30 of the motorcycle 1 according to the present embodiment, since the lower end of the retainer 31 is disposed above the lower end of the seat 16, the retainer 31 is disposed above the seat 16. The straddle space 19 can be secured widely, and the occupant comfort can be improved.

  In addition, the airbag device 30 of the motorcycle 1 according to the present embodiment includes an inclined deployment portion 41 that extends downward on the airbag 40 after the airbag 40 extends upward on the base end side thereof, and extends downward. And a straight deployment portion 42 that is folded in a bellows shape adjacent to the inclined deployment portion 41 on the distal end side of the airbag 40, so that the upstream side of the gas sent from the inflator 32 (the basis of the airbag 40 When the inclined deployment part 41 is arranged on the end side, the deployment direction of the airbag 40 with respect to the vehicle traveling direction V can be determined by deploying the inclined deployment part 41 first. It can suppress enlargement. Thereby, since the airbag 40 can be made small, the retainer 31 can also be made small. Therefore, the straddle space 19 can be secured widely, and the passenger's boarding / exiting property is improved, so that the comfortability of the passenger is improved.

  Further, in the airbag device 30 of the motorcycle 1 according to the present embodiment, the airbag 40 is folded between the inclined deployment portion 41 and the linear deployment portion 42 in a direction opposite to the folding direction of the inclined deployment portion 41. By including the inclination restriction part 43, the inclination restriction part 43 can appropriately control the deployment direction of the airbag 40 with respect to the vehicle traveling direction V. Therefore, the angle of the retainer 31 can be appropriately set so that the straddle space 19 can be arranged as large as possible. Therefore, the occupant's ease of boarding / exiting is improved, so that the occupant's comfort is improved.

  Further, in the airbag device 30 of the motorcycle 1 according to the present embodiment, the inclined deployment portion 41 is disposed at the rear portion of the retainer 31 and the linear deployment portion 42 is disposed at the front portion of the retainer 31. Since the development part 42 and the inclined development part 41 are respectively divided into front and rear, the linear development part 42 can be efficiently filled with the inflator gas. Therefore, the airbag 40 can be rapidly deployed.

  As mentioned above, although embodiment of this invention was described, the structure in the said embodiment is an example of this invention, and it is various in the range which does not deviate from the summary of this invention, such as replacing the component of embodiment with a well-known component. It can be changed. For example, although the inflator 32 has a disk shape, it may have a cylinder shape.

1 Motorcycle (saddle-ride type vehicle)
12 Head Pipe 16 Seat 19 Spacing Space 30 Airbag Device 31 Retainer 40 Airbag 41 Inclined Deployment Part 42 Linear Deployment Part 43 Inclination Restriction Part CV Car Body Cover Lc Center Line Along the Inclination of Retainer V Vehicle Traveling Direction

Claims (4)

A vehicle body cover (CV) that covers the rear surface of the head pipe (12) and is disposed in front of a seat (16) on which an occupant sits to form a straddle space (19), and is provided in the straddle space (19). And an airbag device (30) for a saddle-ride type vehicle comprising: a retainer (31) for accommodating the airbag (40);
The retainer (31) is provided to be inclined rearward and upward along the vehicle body cover (CV),
The airbag (40) bulges in a direction inclined forward with respect to a center line (Lc) along the inclination of the retainer (31) in a side view,
A stay (13A) that protrudes toward the rear of the vehicle so as to gradually become narrower toward the rear of the vehicle at a portion near the head pipe (12) at the upper portion of the main frame (13) that extends downward from the head pipe (12). Is provided ,
The airbag (40) extends upward on the base end side, and then is folded back toward the vehicle traveling direction and extends downward, and the airbag (40) is tilted and deployed on the distal end side of the airbag (40). An airbag device for a saddle-ride type vehicle, comprising: a linear deployment portion (42) that is folded in a bellows shape adjacent to the portion (41) .   The airbag device for a saddle-ride type vehicle according to claim 1, wherein a lower end of the retainer (31) is disposed above a lower end of the seat (16). The airbag (40) has an inclination regulating portion (4) folded between the inclined deployment portion (41) and the linear deployment portion (42) in a direction opposite to the folding direction of the inclined deployment portion (41).
The airbag apparatus for a saddle-ride type vehicle according to claim 1 or 2 , wherein the airbag apparatus includes 3). The inclined deployment part (41) is disposed at the rear part of the retainer (31), and
The airbag device for a saddle-ride type vehicle according to any one of claims 1 to 3, wherein the straight line deployment portion (42) is disposed at a front portion of the retainer (31).

Images