JP2011246851A - Occupant-protecting vest - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an occupant-protecting vest structured so that an air bag can be easily prepared, and the air bag can rapidly expand with the tip end side of the downstream side portion of the vest coming close to the occupant.SOLUTION: The occupant-protecting vest is structured as follows: an air bag 50 expanded by inflow of expansion gas so as to protect the occupant, is attached to the body of the vest; and the vest body includes a front body having a left front part and a right front part which are connected to each other via a slide fastener with its front openable. The air bag 50 includes: a back face structure part 71 where the developed shape of the air bag the front side wall part 65 and the back side wall part 66 of which are superimposed to be flatly developed, forms a back face expansion part; and a branching structure part 75 disposed so as to turn over while branching into right and left directions from the upper end of the back face structure part, to form a branching expansion part. Also right and left front face structure parts 79 forming the front face expansion part which can protect the breast part and the abdominal part of the occupant at the branching expansion part are disposed respectively on both of the right and left sides of the back face structure part 71.

Description

  The present invention relates to an occupant protection jacket that is configured to be attached to an upper body of an airbag that inflates an inflatable gas so as to protect the occupant as a configuration to be worn by an occupant riding a vehicle.

  Conventionally, as this type of occupant protection vest, an airbag has a structure in which a large number of rod-shaped cells extending in the vertical direction are connected along the left and right side, and when the inflation is completed, the upper body of the occupant is circumferential. There is a configuration in which the outer peripheral side of the upper body is covered over substantially the entire region along the circumference of the waist (see, for example, Patent Document 1).

  Further, as a protective jacket equipped with an air bag, there is one in which the air bag inflates the columnar cell three-dimensionally and covers the chest and the head of the operator when operating. (For example, refer to Patent Document 2).

JP 2007-321305 A JP 2003-126283 A

  However, in the occupant protection vest equipped with the conventional airbag, a plurality of columnar cells are arranged in a three-dimensional manner so as to surround the occupant, and manufactured by sewing the airbag itself in a three-dimensional manner. It was necessary to do so, and it took time to manufacture the airbag.

  Therefore, it is considered that the airbag is configured as a planar airbag type formed by stacking airbag base fabrics having the same shape and joining the outer peripheral edges so that the airbag can be easily manufactured. It is done. However, when the airbag is configured as a flat airbag type, the airbag needs to be bent and disposed so as to surround the occupant, and the upstream portion of the airbag inflation gas is changed from the upstream portion to the downstream portion. In the meantime, a part to be bent is provided. However, if there is a bent portion between the upstream portion and the downstream portion of the inflation gas in the airbag, the distal end side of the downstream portion of the inflation gas becomes a free end, and when the airbag is inflated, It tries to extend straight from the upstream part without bending. Therefore, if no countermeasures are taken, even if the position of the front end of the downstream portion of the airbag during inflation is restricted by the body of the clothing to which the airbag is attached, it can be placed away from the occupant to protect the occupant It becomes impossible to arrange at the arrangement position quickly.

  The present invention solves the above-described problems, and can easily manufacture an airbag, and can quickly inflate the airbag while bringing the distal end side of the downstream portion closer to the occupant. The purpose is to provide a jacket.

An occupant protection vest according to the present invention is an occupant protection vest configured by attaching an airbag for inflating an inflatable gas so as to protect the occupant attached to the vest main body,
The body body is configured to include a front body having a left front part and a right front part that are coupled to each other by coupling means so that the front part can be opened, and a rear body.
Airbag
A back inflating part that is attached to the back of the body of the clothing body, and that inflates the back side of the occupant in a protective manner, as an upstream part of the inflation gas;
A left branch expansion part and a right branch expansion part that branch left and right from the upper end of the back expansion part;
And configured with
When the inflation of the airbag is completed,
A head inflating portion that extends from the back inflating portion to the front upper side and is arranged on each side of the occupant's head in the left-right direction, and inflates the head in a protective manner;
It extends downward from the front end of the head expansion part so as to be a downstream part of the inflation gas, and is arranged in front of the abdomen from the left and right chests on the front side of the occupant, so that the occupant's chest and abdomen can be protected A front expansion portion that expands;
Further comprising
The airbag is configured as a planar airbag type formed by overlapping airbag base fabrics having the same shape with each other and connecting outer peripheral edges.
One of the airbag base fabrics is a front side wall portion arranged on the outer surface side when the inflation of the airbag is completed, and the other side of the airbag fabric is arranged on the passenger side when the inflation of the airbag is completed. Configured as a back side wall,
The deployment shape of the airbag in a state in which the front side wall portion and the rear side wall portion are overlapped and flattened is reversed while branching left and right from the upper end of the rear configuration portion and the upper end of the rear configuration portion. A left branch constituent part and a right branch constituent part that constitute the left branch inflating part and the right branch inflating part.
The left branch component and the right branch component are each configured to include an intermediate component that configures the head expander and a front component that configures the front expander.
In a state where the front side wall portion and the back side wall portion of the airbag are overlapped and flattened,
The left and right front components are respectively disposed on the left and right sides of the rear component, and
From the upper end of the rear component, the left and right intermediate components have a height dimension that extends from the lower edge to the upper edge so that the side of the occupant's head can be covered by the head inflatable part when inflated. As a configuration that extends outward in the left-right direction and is connected to the upper ends of the left and right front components,
The back component is attached to the back body of the jacket body,
Bend the rear component side end so that the left and right intermediate components are close to each other, and the upper edge side is the lower edge side so that the upper and lower shoulders can be deployed and inflated on the occupant's left and right shoulders Folded to approach
The left and right front constituent parts are attached to the left front part and the right front part of the jacket main body, and are arranged.

  In the occupant protection jacket according to the present invention, the airbag is formed by overlapping the outer peripheral edges by overlapping the front side wall portion and the back side wall portion as the airbag base fabric having the same shape. It is a bag type, and an airbag can be easily manufactured.

  And if the inflation gas flows into the airbag of the occupant protection jacket while being worn by the occupant, the inflation gas flows from the back surface inflation portion as the upstream portion to the left and right branch inflation portions on the downstream portion side. In the flow and the left and right branch inflating parts, the head inflating part inflates and the front inflating part inflates, and the front inflating part tries to inflate so that it is away from the passenger. However, in the airbag according to the present invention, the front body constituting the front inflating portion is arranged on the left and right sides of the back constituting portion constituting the back inflating portion in a flatly deployed state. When assembling to the occupant, while bending the end of the rear component side and the front component side in the intermediate component part so that it wraps forward from the rear component part through the left and right sides of the upper body centering on the upper body of the occupant, A front component is arranged on the front side.

  Therefore, when the airbag is inflated, the left and right front inflating parts (front constituent parts) which are downstream parts of the inflating gas are located on the back constituent part side and the front constituent part side in the intermediate constituent parts which are bent parts. While trying to expand while extending the ends, it tries to expand away from each other. However, this behavior is due to the fact that the front left part and the right front part of the jacket main body are joined by a predetermined joining means, and the front expansion part is attached to the left front part and the right front part. Thus, the left and right front inflating portions are prevented from being separated from each other in the left and right directions, and further, the left and right front inflating portions are not separated from the occupant because the directions in which the left and right front inflating portions are not removed are also not removed.

  Further, the intermediate component part constituting the head inflating part in the left and right branch inflating parts has a width dimension from the lower edge to the upper edge so that the inflated head inflating part can protect the occupant's head. It is set to be wide. Therefore, if the head inflating portion as an intermediate component expands wide in the vertical direction, the head inflating portion expands in a state in which the behavior of pulling up the front inflating portion is suppressed, and the branch inflating portion itself is The expansion shape that reverses from the back expansion portion is maintained, and the expansion is easy.

  As a result, the curved shape of the branch inflating portion in which the lower end side of the front inflating portion, that is, the distal end side of the downstream portion of the inflation gas of the airbag is inverted from the back inflating portion using the head inflating portion that is wide in the vertical direction With the coupling means that couples the left front portion and the right side portion of the attached jacket main body, the inflation can be completed quickly in the state of approaching the occupant without leaving the occupant.

  Therefore, in the occupant protection jacket according to the present invention, the airbag can be easily manufactured, and the airbag can be quickly inflated while the distal end side of the downstream portion is approached to the occupant, thereby completing the inflation. The occupant can be accurately protected by the airbag. Further, in the occupant protection jacket according to the present invention, since the airbag arranges the head inflating portions on both the left and right sides of the occupant's head when the inflation is completed, for example, the wearer (occupant) controls the motorcycle. Even if the vehicle falls over, the head of the wearer (occupant) can be accurately protected from the road surface or the like.

  In the occupant protection jacket according to the present invention, the seam portion obtained by combining the front side wall portion and the back side wall portion with the left and right intermediate configuration portions is formed as a linear shape extending in the vertical direction from the rear configuration portion. It is desirable that a plurality of the components are arranged side by side over the front component.

  In such a configuration, the left and right head inflating parts (intermediate constituent parts) can be inflated into a plate shape in which the thickness direction is arranged in the left and right directions by a plurality of seam parts arranged side by side. The shape of the expanded shape easily suppresses deformation that causes the lower edge side to expand in the front-rear direction. Therefore, the behavior of the left and right head inflating parts themselves inflating with the action of a reinforcing rib that suppresses the upward movement of the front inflating part and moving upward of the front inflating part can be further suppressed. The front separation from the occupant during the expansion of the front expansion portion is more accurately prevented.

  Furthermore, in the occupant protection vest according to the present invention, the left and right intermediate components are flattened, and the respective ends of the rear component side and the front component side from the maximum width dimension in the vertical direction. It is desirable to form in a substantially crescent shape with an upward bulge so as to reduce the opening width of the part.

  In such a configuration, the left and right head inflating parts (intermediate constituent parts) at the time of expansion become a shape that curves not only on the lower edge side but also on the upper edge side (convex shape protruding upward), A behavior that causes the lower edge side to expand in the front-rear direction can be suppressed. Furthermore, the left and right intermediate components have reduced opening widths at the ends of the rear component side and the front component side, and the portion can be easily wrapped around the upper body of the occupant. It can be set as a bending part. And in the bending part with such a narrow opening width, even if the expansion gas passes, the expansion of the straight gas is suppressed, and the expansion gas is allowed to pass while maintaining the bent state. Thus, each part of the airbag can be inflated in a state where it is further brought closer to the occupant's periphery.

Furthermore, in the occupant protection jacket according to the present invention, the left and right front components are respectively
A chest component that can form a chest inflatable part that swells on the front side of the occupant's chest, and an abdominal component part that is disposed below the chest component part and that can form an abdomen inflating part that swells on the front side of the occupant's abdomen; And configure
The abdominal component is configured to have a width dimension in the left-right direction larger than that of the chest component in a flatly deployed state. Furthermore, the left and right chest component parts are arranged so as to cover the outer surface side by chest protectors attached to the left front part and the right front part of the clothing body, and the left and right abdomen component parts are respectively airbags. It is desirable to fold and store the abdomen inflating part on the back side of the chest protector so that the abdomen inflating part is disposed on the front side of the abdomen of the occupant.

  In such a configuration, when the airbag is inflated, the abdominal inflatable portion that is wide in the left-right direction is disposed so as to protrude downward from the chest protector, so that the abdomen of the occupant can be protected accurately. The chest protector can be configured to be small without extending down to the abdomen of the occupant, and can accurately protect the occupant's chest together with the thoracic inflatable part in a state in which the operation of the upper body of the occupant is not inhibited as much as possible.

1 is a side view showing an occupant wearing a occupant protection jacket and a motorcycle according to an embodiment of the present invention. It is the schematic perspective view which looked at the crew member's protection jacket of an embodiment from the front side. It is the schematic perspective view which looked at the occupant protection jacket of the embodiment from the rear side. It is sectional drawing of the IV-IV site | part of FIG. It is sectional drawing of the VV site | part of FIG. It is sectional drawing of the VI-VI site | part of FIG. It is sectional drawing of the VII-VII site | part of FIG. It is sectional drawing of the VIII-VIII site | part of FIG. It is a front view which shows the state which developed the airbag used for the passenger | crew protection jacket of embodiment flatly. It is a rear view which shows the state which has arrange | positioned the protector to the airbag used for the passenger | crew protection jacket of embodiment. FIG. 10 is a partial cross-sectional view of the airbag according to the embodiment, in which A corresponds to the XIA-XIA portion of FIG. 9 and B corresponds to the XIB-XIB portion of FIG. 9. In the airbag of embodiment, it is the schematic explaining the process folded up so that an abdominal part structure part may be accommodated in a chest structure part. In the airbag of embodiment, it is a figure explaining the process of folding an intermediate structure part. FIG. 3 is a side view showing a state in which the airbag of the occupant protection jacket of the embodiment has completed inflation during traveling of the motorcycle. In the occupant protection jacket of the embodiment, it is a schematic perspective view seen from the front side showing a state in which the airbag has been inflated. In the occupant protection jacket of the embodiment, it is a schematic perspective view seen from the rear side showing a state in which the airbag has been inflated. It is sectional drawing of the XVII-XVII site | part of FIG. It is sectional drawing of the XVIII-XVIII site | part of FIG. It is a figure explaining the arrangement | positioning state to the circumference | surroundings of the passenger | crew of the airbag of embodiment. It is a figure explaining the arrangement | positioning state around the passenger | crew of the airbag of a comparative example.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, an occupant protection jacket P of the embodiment drives a motorcycle V (hereinafter simply referred to as a “motorcycle”) V as a vehicle. The occupant D to wear. In the case of the embodiment, the two-wheeled vehicle V that the occupant D is driving is of a scooter type, and the occupant D's feet are placed between the seat 3 on which the occupant D sits and the handle 1 in front of the seat 3. Step 2 to be placed is provided.

  Note that the directions of the up, down, front, back, left and right in this specification are based on the occupant D wearing the occupant protection jacket P unless otherwise specified, and in the state where the occupant D is driving the two-wheeled vehicle V, It coincides with the vertical and horizontal directions of V.

  In the two-wheeled vehicle V of the embodiment, a control circuit 5 that outputs an operation signal to the inflator 48 that supplies inflation gas to the airbag 50 of the occupant protection jacket P (see FIG. 3) is arranged. As shown in FIG. 1, the control circuit 5 is disposed at a predetermined position of the vehicle body B in the two-wheeled vehicle V, and is electrically connected to an acceleration detection sensor 6 that can detect the acceleration, acceleration direction, and the like of the two-wheeled vehicle V. Has been. The control circuit 5 includes a transmitter (not shown) that transmits an operation signal for operating the inflator 48, and is electrically connected to the inflator 48 by radio.

  As shown in FIGS. 2 and 3, the occupant protection jacket P according to the embodiment is configured to include a jacket body 10 and an airbag device 46, and the airbag device 46 includes the airbag 50 and the airbag 50. And an inflator 48 for supplying an expansion gas to the inside.

  In the case of the embodiment, as shown in FIGS. 2 and 3, the garment body 10 is a vest type that covers the waist around the chest UC and the back UB of the upper body U of the occupant D when worn. The front body 11 includes a left front portion 12 and a right front portion 13 which are coupled to each other by a slide fastener 14 as a coupling means so that the front body 11 can be opened forward. Configured. In addition, the slide fastener 14 opens the left front part 12 and the right front part 13 of the front body 11 so as to open to the left and right sides, or couples them by operating a slider (not shown).

  Further, the jacket main body 10 covers a base body (vest main body) 20 disposed in the entire region of the front body 11 and the back body 18 and an air bag 50 accommodated on the outer surface side of the base body 20. The protector 24 and the bag cover 36 to be arranged are provided. The base body 20 includes a cloth material (sheet material) 21 formed from a mesh-like woven cloth having good air permeability, and a pad 22 that is wrapped and arranged in the cloth material 21 at a predetermined position. (See FIGS. 4 and 7). The protector 24 includes a chest protector 25 disposed at a position covering the chest UC of the occupant D, and a back protector 29 covering the center (spinal cord) of the back UB of the occupant D. The bag cover 36 includes a back cover portion 37 disposed so as to be juxtaposed with the back protector 29, and shoulder cover portions 41 and 41 provided on the left shoulder portion 16L and the right shoulder portion 16R of the jacket body 10. Configured.

  Furthermore, the belt body 10 is connected to the front body 11 and the back body 18 on both the left and right sides of the front body 11 and the pads 22 of the front body 11 and the back body 18, and the length can be adjusted. The portions 19 and 19 are disposed in the vicinity of the lower end of the body 10 and near the flank of the occupant D when worn (see FIGS. 1 to 3). The occupant D can adjust the positions of the pad 22 and the protector 24 by adjusting the lengths of the belt portions 19 and 19 when the occupant protection jacket P is worn. Further, it is possible to suppress the positional deviation of the protector 24 with respect to the occupant D and the generation of a gap between the jacket main body 10 and the occupant D.

  The pad 22 serves as a cushioning material that prevents the hard protector 24 from causing a sense of incongruity and hits the occupant D. The pad 22 is formed in a plate shape from a synthetic resin such as compressed polyurethane. The outer shape is larger than that of the protector 24 that is disposed on the rear surface side and disposed on the front surface side. 2, 4, and 5, the pad 22 includes a front pad portion 22 a disposed on the back surface side of the chest protector 25, and a back surface side of the back protector 29 as illustrated in FIGS. 3, 7, and 8. The back pad portion 22b is disposed on the cloth material 21 so as to be wrapped with the cloth material 21 using sewing or the like.

  As shown in FIGS. 2, 4, and 5, the chest protector 25 in the protector 24 can protect the chest UC against a strong impact acting on the chest UC of the occupant D, and the air disposed at the site. In order to protect the site | part (front expansion part 59) of the bag 50, it is arrange | positioned. Therefore, the chest protector 25 is configured to have a certain degree of rigidity. In the embodiment, the chest protector 25 is formed of a hard synthetic resin such as polyethylene or polypropylene. Further, the chest protector 25 is disposed on the outer surface side of the left front part 12 and the right front part 13 in the front body 11 of the body 10, and has a left and right chest protector 25 </ b> L and a right and left symmetrical substantially square plate shape. It is comprised from the chest protector 25R. The left chest protector 25L and the right chest protector 25R are each provided with attachment holes 27 at the four corners of the substantially square plate-like body 26, and the front pad portions 22a are fixed to the attachment holes 27 as fixing means. These bolts, nuts and rivets 34 are passed through and fastened to be fixed to the base body 20 of the jacket main body 10. Further, the left chest protector 25L and the right chest protector 25R are lifted from the base body 20 on the inner edge 26c side, the outer edge 26d side, and the lower edge 26b side, which are the coupling site side of the left front part 12 and the right front part 13 in the main body 26. It is connected to the base body 20 using connection means such as a predetermined adhesive or suture so that there is no such problem. However, the lower edge 26b side has a configuration in which an abdominal part inflating part 61 (61L, 61R), which will be described later, of the airbag 50 protrudes downward from the back surface 26a side of the main body 26 accommodated. At the time of expansion, the base body 20 is connected so that it can be easily separated from the base body 20.

  As shown in FIGS. 3 and 7, the back protector 29 in the protector 24 protects the spinal cord against a strong impact acting on the back UB of the occupant D, and is an airbag 50 disposed at the site. In order to protect this part (the back expansion part 51) and the inflator 48, it is provided. Therefore, like the chest protector 25, the back protector 29 is also made of rigid synthetic resin such as polyethylene or polypropylene having rigidity. However, in the case of the embodiment, the back protector 29 is composed of a plurality of cover pieces 30 that are divided in the vertical direction so that the occupant D wearing the occupant protection jacket P can bend the upper body U forward. ing. In the case of the embodiment, four cover pieces 30 (30A, 30B, 30C, 30D) are arranged along the vertical direction, and each has a U-shaped cross section extending left and right edges forward. The main body 31 is provided with attachment pieces 32 and 32 on both left and right edges of the main body 31. And each attachment piece part 32 is provided with the attachment hole 32a which penetrates the rivet 34 as a fixing means, and the back pad part 22b of the pad 22 is attached and fixed to the base body 20 using the rivet 34. Yes. The cover piece 30 has a back cover portion 37 disposed between the second cover piece 30B and the third cover piece 30C from above. Further, the lowermost cover piece 30D has a lower edge 31a side of the main body 31 curved in a curved shape extending downward so as to cover the vicinity of the tail bone of the occupant D and cover the lower side of the inflator 48. Configured.

  The back cover portion 37 in the bag cover 36 is formed of a material such as a synthetic resin such as an olefin-based thermoplastic elastomer softer than the protector 24 as shown in FIGS. In the case of the part, the embodiment, the waist protecting portion 53 provided on the back surface expanding portion 51 is covered so as to protrude. Similar to the cover piece 30, the back cover part 37 is also provided with a U-shaped main body 38 that extends both left and right edges forward, and attachment pieces 39, 39 on the left and right edges of the main body 38. Thus, each attachment piece 39 is connected to the base body 20 by bonding or the like. The main body 38 is formed with a thin portion to be broken 38a at the center in the left-right direction along the vertical direction. In this back cover part 37, when the stored waist protection part 53 expands, the main body 38 is pushed by the waist protection part 53, thereby breaking the planned breaking part 38a and opening it left and right. At this time, the waist protection part 53 protrudes from the central protection part 52 of the back inflating part 51 while inflating to the left and right sides, and expands to a position where the waist part UW of the occupant D is protected. Is completed (see FIGS. 3 and 16).

  As shown in FIGS. 2, 3 and 6, the shoulder cover portion 41 of the bag cover 36 extends upward from the cover piece 30 </ b> A at the upper end and branches left and right, and covers the left and right shoulder portions US of the occupant D. The left and right chest protectors 25 (25L, 25R) are disposed so as to be connected via the left shoulder 16L and the right shoulder 16R of the body 10. The shoulder cover portion 41 is also formed of a softer material than the protector 24, as in the case of the back cover portion 37, and is a part of the folded airbag 50. In the embodiment, the branch inflatable portion 55 extends from the back surface inflatable portion 51. The head expanding portion 57 is covered so as to protrude. And this shoulder cover part 41 is also provided with the main body 42 which covers the folded head expansion part 57, and the attachment piece part 43 which is adhere | attached etc. and connected to the base body 20 of the both ends of the main body 42, and a main body 42 is formed with a planned fracture portion 42 a that is pushed by the expanding head expanding portion 57 to open and projects the protruding head expanding portion 57.

  As shown in FIG. 3, the inflator 48 of the airbag device 46 is disposed on the back side of the lowermost cover piece 30 </ b> D of the back protector 29, and when the occupant protection jacket P is worn, the back of the occupant D near the tailbone Will be arranged. In the case of the embodiment, the inflator 48 is a cylinder type whose outer shape is substantially cylindrical (see the two-dot chain line in FIGS. 9 and 10), and is arranged so that the axial direction is along the vertical direction. The inflator 48 is connected to the lower end 52a of the central protective portion 52 of the back inflatable portion 51 of the airbag 50, and is attached to the base body 20 near the cover piece 30D using a mounting bracket (not shown). Yes. In the case of the embodiment, as described above, the inflator 48 includes a receiver (not shown) that can receive an operation signal from the control circuit 5 and is electrically connected to the control circuit 5 wirelessly. Yes, it is configured such that the inflation gas can be supplied to the airbag 50 when an operation signal is received from the control circuit 5.

  As shown in FIGS. 2 to 9, the airbag 50 is attached to the back body 18 of the jacket main body 10, and as a upstream portion FU of the inflation gas, a back inflation portion 51 that inflates the back side of the occupant D in a protective manner. And a branch expansion part 55 (a left branch expansion part 55L and a right branch expansion part 55R) branching left and right from the upper end of the back expansion part 51.

  As shown in FIGS. 9, 14, 16, and 18, the back surface inflating part 51 covers a central rear part of the back part UB of the occupant D and can protect the spinal cord when inflating, and a central protective part 52 A waist protection portion 53 that extends to the left and right sides from 52, covers the back of the waist portion UW of the occupant D, and can protect the waist portion UW. The central protection part 52 is covered with the back protector 29 and is housed between the back pad part 22 b of the pad 22 and the back protector 29. The central protection part 52 is attached to the base body 20 by fastening the rear surface mounting parts 84 on both left and right edges together with the rear surface protector 29 by rivets 34 as fixing means. The waist protection part 53 is folded to the center protection part 52 side, covered with the back cover part 37, and housed between the back cover part 37 and the back pad part 22b. In the case of the embodiment, the central protective portion 52 is provided with a cylindrical inner tube 87 made of a woven fabric having flexibility similar to the airbag base fabric 64 of the airbag 50. (See A in FIGS. 9 and 11). The inner tube 87 is disposed in order to protect the central protection part 52 from high-temperature and high-pressure gas from the inflator 48.

  As shown in FIGS. 9 and 14 to 17, the left and right branch expansion parts 55 (55L, 55R) are respectively provided with a head expansion part 57 (57L, 57R) and a front expansion part 59 (59L, 59R). It is prepared for. The left head inflating portion 57L and the right head inflating portion 57R extend from the rear inflating portion 51 to the front upper side when the airbag 50 is completely inflated, and are respectively disposed on the lateral sides of the head DH of the occupant D. Thus, the head DH is expanded in a protective manner. The left front inflation portion 59L and the right front inflation portion 59R of the branch inflation portion 55 (55L, 55R) constitute the downstream portion FD of the inflation gas of the airbag 50, and when the inflation of the airbag 50 is completed In addition, each extends downward from the front end 57a of the head inflating portion 57 and is arranged in front of the abdomen UA from the left and right chests UC on the front side of the occupant D, so that the chest UC and the abdomen UA of the occupant D can be protected. Inflate. More specifically, the left front inflating portion 59L and the right front inflating portion 59R are respectively a chest inflating portion 60 (60L, 60R) that inflates the chest UC of the occupant D in a protective manner, and a distal end FDT of the downstream portion FD. The abdomen inflating part 61 (61L, 61R) extends downward from the chest inflating part 60 and inflates the abdomen UA of the occupant D in a protective manner. In the case of the embodiment, the left front inflating portion 59L and the right front inflating portion 59R respectively connect the front mounting portions 85 on the left and right edges of the chest inflating portion 60 by the rivets 34 as fixing means. 25L, 25R) and attached to the base body 20.

  As shown in FIGS. 9 to 11, the airbag 50 is configured as a planar airbag type formed by overlapping airbag base fabrics 64 having the same shape and joining the outer peripheral edges 65 a and 66 b to each other. ing. That is, one side of the airbag base fabric 64 is the front side wall portion 65 disposed on the outer surface side when the airbag 50 is completely inflated, and the other side of the airbag base fabric 64 is when the airbag 50 is completely inflated. It is comprised as the back side wall part 66 arrange | positioned at the passenger | crew D side. The front side wall portion 65 and the back side wall portion 66 as the airbag base fabric 64 are made of woven fabric made of polyamide yarn, polyester yarn, or the like, and silicon or the like on the inner peripheral surface side of the airbag 50. The airbag 50 is formed by sewing the outer peripheral edges 65a and 66a to each other.

  Then, the airbag 50 in a state where the front side wall portion 65 and the back side wall portion 66 are overlapped and flattened, that is, the deployed shape of the deployed bag 70 constitutes a back inflatable portion 51 as shown in FIG. The rear structure 71 and the branch structure constituting the branch expansion section 55 (the left branch expansion section 55L and the right branch expansion section 55R) are arranged so as to be reversed while branching left and right from the upper end 71a of the rear configuration section 71. Part 75 (left branch constituent part 75L and right branch constituent part 75R). The left branch component 75L and the right branch component 75R include an intermediate component 77 (the left intermediate component 77L and the right intermediate component 77R) constituting the head expansion part 57 and a front expansion part 59, respectively. The front structure part 79 (the left front structure part 79L and the right front structure part 79R) to comprise is comprised.

  That is, in the deployment bag 70 of the embodiment, in a state where the front side wall 65 and the back side wall 66 are overlapped and flattened, the branch component 75 (the left branch component 75L and the right branch component 75R) Since it is configured so as to be reversed from the back surface configuration portion 71, the left front surface configuration portion 79 </ b> L and the right front surface configuration portion 79 </ b> R are configured to be disposed on both the left and right sides of the back surface configuration portion 71, respectively. .

  In the deployment bag 70, the left intermediate component 77L and the right intermediate component 77R respectively set the height dimension HL applied from the lower edge 77b to the upper edge 77a to the head expansion part 57 (57L, 57L, 57R), which extends to the outside in the left-right direction from the upper end 71a of the rear surface component 71, with a dimension capable of covering the side of the head DH of the occupant D (see FIGS. 15 and 16). It is set as the structure arrange | positioned so that it may be connected with the upper end 79a with the right front structural part 79R.

  Furthermore, the left intermediate component 77L and the right intermediate component 77R are configured as a rear component 71 in which a seam portion 67 obtained by joining the front side wall 65 and the rear side wall 66 is linearly extended in the vertical direction. A plurality (two in the embodiment) are arranged side by side from the front component 79 to the front component 79. In the case of the embodiment, the seam portion 67 is formed by sewing.

  Furthermore, the left intermediate component 77L and the right intermediate component 77R are flatly unfolded, and the respective ends of the rear component 71 side and the front component 79 side from the maximum vertical width dimension BL. The openings 77b and 77d are formed in a substantially crescent shape with an upward bulge so as to reduce the opening widths Bb and Bf.

  Further, the left front component 79L and the right front component 79R are respectively a chest component 80 (a left chest component 80L and a right chest component 80R) that can form a left chest expander 60L and a right chest expander 60R. ) And an abdominal component part 81 (left abdominal component part 81L and right abdominal component part 81R) that is arranged below the chest component part 80 and can form a left abdominal inflatable part 61L and a right abdominal inflatable part 61R. It is prepared for. In the case of the embodiment, the abdomen constituting part 81 in a state where the abdomen inflating 61 is flatly expanded so that the abdomen inflating part 61 of the occupant D covers a wide range of the abdomen UA of the occupant D has the width dimension BW in the left-right direction. The chest component 80 is configured to be larger than the width dimension BS in the left-right direction.

  In the airbag 50 (deployment bag 70), an attachment portion 83 for attaching to the base body 20 of the jacket main body 10 is formed at a joint portion between the outer peripheral edges 65a and 66a of the front side wall portion 65 and the back side wall portion 66. ing. In the case of the embodiment, the mounting portion 83 includes a back mounting portion 84 disposed on both left and right edges of the back surface configuring portion 71, a front mounting portion 85 disposed on each left and right edge of each of the left and right front configuring portions 79, and It is configured with. A predetermined number of mounting holes 84a and 85a through which the rivet 34 as a fixing means passes are formed in the back surface mounting portion 84 and the front surface mounting portion 85.

  And the back structure part 71 applies the side of the back side wall part 66 to the base body 20 side, and uses the rivet 34 that penetrates the mounting hole 84a to fasten the back mounting part 84 together with the back protector 29, It is attached to the base body 20 of the back body 18 of the body 10 (see FIG. 7). Further, the left front structural part 79L and the right front structural part 79R also use the rivet 34 that passes the mounting hole 85a through the front mounting part 85 by placing the back side wall 66 side against the base body 20 side, and a chest protector. While being fastened together with 25, it is attached to the base body 20 of the left front part 12 and the right front part 13 of the jacket main body 10 (see FIG. 4).

  At this time, as shown in FIGS. 19A and 19B, the unfolding bag 70 is in front of the base body 20 of the jacket body 10 with the back side wall portion 66 of the back surface configuration portion 71 facing the front side. The intermediate component 77 (77L, 77R) is arranged along the front-rear direction so that the component 79L and the right front component 79R approach each other on the front side. ) In which the end portions 77c and 77d on the back surface configuration portion 71 side and the front surface configuration portion 79 side are bent so that the back side wall portions 66 of the left front surface configuration portion 79L and the right front surface configuration portion 79R face the rear side. It becomes. In this state, the back surface configuration portion 71 is attached to the base body 20 of the back body 18 of the waist body 10 by fastening the back surface mounting portion 84 together with each cover piece 30 of the back surface protector 29, and the front surface configuration portion 79. (79L, 79R) are attached to the base body 20 of the left front part 12 and the right front part 13 in the front body 11 of the jacket body 10 by fastening the front attachment part 85 together with the chest protector 25. In addition, when attaching the back surface configuration portion 71 and the front surface configuration portion 79 of the deployment bag (airbag 50) to the base body 20 of the clothing body 10, the inflator 48 is connected to the lower end 71b of the back surface configuration portion 71. When attaching the cover piece 30 </ b> D to the base body 20, the inflator 48 is also attached to the base body 20 using a predetermined mounting bracket (not shown).

Furthermore, in the embodiment, when the deployment bag (airbag 50) 70 is attached to the jacket main body 10, the back constitution part (back inflating part 51) 71 folds the region of the waist protection part 53 toward the central protection part 52, The back cover part 37 is put on the folded portion 92 of the folded waist protection part 53, and the attachment piece 39 of the back cover part 37 is attached to the base body 20 (see C in FIGS. 8 and 19).
In the left and right intermediate components 77 (the left intermediate component 77L and the right intermediate component 77R), the upper edge 77a is folded so as to approach the lower edge 77b, and the folded portion 89 is folded into the clothing body. 10 on the outer surface of the left shoulder portion 16L and the right shoulder portion 16R, and further, the shoulder cover portion 41 is put on the folding portion 89, and the mounting piece portion 43 of the shoulder cover portion 41 is attached to the left shoulder portion 16L and the right shoulder portion. It will attach to the base body 20 with 16R (refer C of FIG. 6, FIG. 19). In the case of the embodiment, as shown in FIG. 13, the folding portion 89 of the intermediate configuration portion 77 is formed by folding by roll folding in which the upper edge 77 a side is wound around the front side wall portion 65 side.

  Further, in the case of the embodiment, in the left and right front constituent parts 79 (left front constituent part 79L and right front constituent part 79R), the abdominal constituent parts 81 (left abdominal constituent part 81L and right abdominal constituent part 81R) are respectively shown in FIG. 12, the chest protector 25 is folded to the back surface 26 a side. In the case of the embodiment, the abdomen component 81 is folded by a cactus fold inserted into the chest component 80 (the left chest component 80L and the right chest component 80R). More specifically, in the case of the embodiment, as shown in FIGS. 12A to 12C, the abdomen component part 81 inserts the lower edge 81a into the front component part 79 from the outer edge 81b side, Cactus is folded so as to be inserted into the chest component 80. And the folding part 91 formed by the cactus fold is covered with the chest protector 25 together with the chest component 80, and is housed on the back surface 26a side. Note that the chest protector 25 folds the abdomen component 81 and then connects the lower edge 26b of the main body 26 together with the inner edge 26c and the outer edge 26d by bonding or the like to the base body 20.

  In the occupant protection jacket P of the embodiment, as shown in FIGS. 9 to 11, the airbag 50 has a front side wall portion 65 and a back side wall portion 66 as the airbag base fabric 64 having the same shape. The outer peripheral edges 65a and 66a are joined together to form a flat airbag type, and the airbag 50 can be easily manufactured.

  Further, in the occupant protection jacket P of the embodiment, if the control circuit 5 detects a collision of the two-wheeled vehicle V with the acceleration detection sensor 6 when the two-wheeled vehicle V is running while being worn by the occupant D, the airbag is used. An actuation signal is output to the inflator 48 of the device 46, and the inflator 48 is actuated to discharge the inflation gas G into the interior of the airbag 50. The airbag 50 is shown in FIGS. From the state, the expansion is completed as shown in FIGS. Then, if the inflation gas G flows into the airbag 50 of the occupant protection jacket P in a state worn by the occupant D, the inflation gas G flows from the rear side inflatable portion 51 as the upstream side portion FU to the downstream side portion FD. The left and right branch expansion portions 55 (55L, 55R) flow (see FIG. 9).

  At this time, as shown in FIG. 18, in the rear inflating part 51, the central protection part 52 is inflated so as to be filled between the back protector 29 and the back pad part 22 b, thereby protecting the spinal cord of the occupant D. . Further, as shown in FIG. 16, the waist protection part 53 protects the waist part UW of the occupant D by breaking the planned breaking part 38 a and pushing the main body 38 of the back cover part 37 to complete the expansion. be able to.

  Further, in the left and right branch expansion portions 55 (55L, 55R) into which the expansion gas has been introduced, the head expansion portion 57 (57L, 57R) expands and the front expansion portion 59 (59L, 59R) expands, respectively. . At this time, the left and right head inflating portions 57 break the planned breaking portion 42a, complete the expansion while pushing the main body 42 of the shoulder cover portion 41 to protrude upward, and the left and right sides of the head DH of the occupant D. Therefore, the head UH of the occupant D can be protected. Further, in the left and right front inflating portions 59, the left and right abdominal inflating portions 61 (61L, 61R) are pushed downward from the chest inflating portion 60 and project downward from the lower edge 26b of the chest protector 25, so that the chest inflating portion 60 At the same time, the expansion is completed. Therefore, as shown in FIG. 17, the left and right chest inflating portions 60 are inflated so as to be filled between the chest protector 25 and the front pad portion 22a, thereby protecting the chest portion UC of the occupant D. Further, as shown in FIGS. 14 and 15, the left and right abdomen inflating portions 61 can be disposed in front of the abdomen UA of the occupant D to protect the abdomen UA of the occupant D.

  In the airbag 50, the abdomen inflating portion 61 on the distal end FDT side of the downstream portion FD at the completion of the inflation is bent so as to be reversed from the back surface inflating portion 51 of the upstream portion FU. The abdomen inflating part 61 tries to inflate so as to be away from the occupant D. However, in the airbag 50 of the embodiment, as shown in FIG. 9, the left and right front constituent parts 79 (the left front constituent part 79 </ b> L and the right front constituent part 79 </ b> L) The front structure portion 79 </ b> R) is configured to be disposed on both the left and right sides of the back surface structure portion 71 constituting the back surface expansion portion 51. When the airbag 50 (deployment bag 70) is assembled to the body 10 as shown in FIGS. 19A and 19B, the left and right sides of the upper body U from the rear component 71 are centered on the upper body U of the occupant D. As a configuration in which the front component 79 is arranged on the front side of the occupant D while bending the end portions 77c and 77d on the rear component 71 side and the front component 79 side of the intermediate component 77 so as to go forward. Yes.

  For this reason, when the airbag 50 is inflated, the left and right front inflating portions 59 (the front constituting portion 79) that become the downstream portion FD of the inflating gas G are the rear constituting portion 71 in the intermediate constituting portion 77 that is a bent portion thereof. The end portions 77c and 77d on the side and the front configuration portion 79 side are extended and are expanded so as to be separated from each other left and right. However, in this behavior, the left front portion 12 and the right front portion 13 of the clothing body 10 are coupled by the slide fastener 14 as a predetermined coupling means, and the front expansion portion 59 is connected to the left front portion 12 and the right front portion 13. Is attached, the abdomen inflating portions 61 (61L, 61R) of the left and right front inflating portions 59 (59L, 59R) are restrained from separating from each other in the left-right direction due to the coupling of the slide fastener 14, Since the direction in which the abdomen inflating part 61 (61L, 61R) of the left and right front inflating parts 59 (59L, 59R) is not above the direction in which the occupant protection jacket P is removed, it is prevented from leaving the occupant D. .

  Incidentally, unlike the airbag 100 of the comparative example shown in FIG. 20, the front constituent part 79 constituting the front inflating part 59 is simply changed from the back constituent part 71 constituting the rear inflating part 51, unlike the embodiment 100. As a configuration to be arranged through the intermediate component 77 extending linearly, the intermediate component 77 is bent at the fold VL along the left-right direction so that the front component 79 is arranged on the front side of the rear component 71. In addition, it is possible to configure. However, in the airbag 100 of such a comparative example, when inflated, the intermediate component 77 is inflated in a rod shape that extends in the front-rear direction, and the front inflatable portion 59 composed of the front component 79 is the tip (lower end) FDT. To move forward from the front of the passenger D (see the two-dot chain line in FIG. 20B). The behavior in which the lower end FDT side of the front inflatable portion 59 moves forward is a behavior in which the front lower edge of the occupant protection jacket is moved forward to remove the garment from the occupant D. Even if it is attached to the jacket body, it is difficult to regulate. As a result, in such an airbag 100, when the inflation is completed, it is difficult to place the lower end FDT side of the front inflating portion 59 close to the abdomen of the occupant D, and quickly place it at the protected position of the abdomen of the occupant D. It will be difficult.

  Furthermore, in the embodiment, the intermediate component 77 constituting the head inflating portion 57 in the left and right branch inflating portions 55 (55L, 55R) has an expanded head width dimension BL extending from the lower edge 77b to the upper edge 77a. The inflatable part 57 is set to be wide so that the head DH of the occupant D can be protected. Therefore, if the head expansion part 57 as the intermediate component part 77 expands wide in the vertical direction, the head expansion part 57 expands in a state in which the behavior of pulling up the front expansion part 59 is suppressed, so that the branch expansion The portion 55 itself maintains the expansion shape that is reversed from the back expansion portion 51 and is easily expanded.

  As a result, the lower end side of the front inflating portion 59, that is, the front end FDT side of the downstream portion FD of the inflation gas G of the airbag 50 is inverted from the back inflating portion 51 using the head inflating portion 57 that is wide in the vertical direction. The occupant D is approached without being separated from the occupant D by the curved shape of the branch inflating part 55 and the slide fastener 14 as a coupling means for coupling the left front part 12 and the right front part 13 of the attached jacket main body 10. In this state, the expansion can be completed quickly.

  Therefore, in the occupant protection jacket P of the embodiment, the airbag 50 can be easily manufactured, and the airbag 50 can be rapidly inflated while the front end FDT side of the downstream portion FD is brought close to the occupant D. The occupant D can be accurately protected by the airbag 50 that has been inflated. Further, in the occupant protection jacket P of the embodiment, the airbag 50 arranges the head inflating portions 57 (57L, 57R) on the left and right sides of the head DH of the occupant D when the inflation is completed. Even if the occupant D) falls while operating the motorcycle, the head DH of the occupant D can be protected accurately from the road surface or the like.

  In the occupant protection jacket P according to the embodiment, the left and right intermediate component parts 77 (77L, 77R) extend the seam part 67, in which the front side wall part 65 and the back side wall part 66 are combined, in the vertical direction. As a linear shape, a plurality (two in the embodiment) are juxtaposed from the rear component 71 to the front component 79 (see FIGS. 9 and 10). Therefore, in the airbag 50 of the embodiment, the left and right head inflating portions 57 (intermediate component portions 77) are inflated in a plate shape in which the thickness direction is arranged in the left-right direction by a plurality of seam portions 67 arranged in parallel. Thus, such a plate-like expanded shape can easily suppress deformation that causes the lower edge 77b side to expand in the front-rear direction. As a result, the left and right head inflating portions 57 themselves inflate by acting like a reinforcing rib that suppresses the upward movement of the front inflating portion 59, and further suppress the behavior of moving upward from the front inflating portion 59. In addition, the forward separation from the occupant D when the left and right front inflating portions 59 (59L, 59R) are inflated is more accurately prevented.

  Further, in the occupant protection jacket P according to the embodiment, the left and right intermediate components 77 are flattened and the maximum width dimension BL in the vertical direction is larger than the rear component 71 side and the front component 79 side. In order to reduce the opening widths Bb and Bf of the respective end portions 77c and 77d, the upper bulge is formed in a substantially crescent shape (see FIGS. 9 and 10). Therefore, the left and right head inflating portions 57 (intermediate component portion 77) at the time of expansion become a shape that curves not only on the lower edge 77b side but also on the upper edge 77a side (convex shape protruding upward), A behavior that causes the lower edge 77b side to expand in the front-rear direction can be suppressed (see FIGS. 14 to 16). Further, the left and right intermediate constituent parts 77 reduce the opening widths Bb and Bf of the respective end parts 77c and 77d on the back surface constituent part 71 side and the front constituent part 79 side, and the portions (end parts 77c and 77d). Can be easily set as a bending portion when the airbag 50 is wrapped around the upper body U of the occupant D. And in the bending part (end part 77c, 77d vicinity) with narrow opening width Bb, Bf of such a structure, even if the gas G for expansion passes, it is suppressed that it expand | swells to a rod shape straightly, and a bending state The inflation gas G can be allowed to pass through while maintaining the above, and each part of the airbag 50 can be inflated in a state in which the part is further brought closer to the occupant D.

  Furthermore, in the occupant protection jacket P of the embodiment, the left and right front constituent parts 79 (79L, 79R) are respectively inflated on the front side of the chest part UC of the occupant D as shown in FIGS. A chest component 80 (80L, 80R) capable of forming 60 (60L, 60R), and an abdomen inflation portion 61 (61L, 61R) disposed below the chest component 80 and inflating on the front side of the abdomen UA of the occupant D ) Can be formed, and abdomen constituting part 81 (81L, 81R). Furthermore, the width dimension BW in the left-right direction of the abdominal structure part 81 in a flatly deployed state is configured to be larger than the width dimension BS in the left-right direction of the chest structure part 80. Furthermore, the left and right chest component parts 80 are disposed so as to cover the outer surface side by the chest protectors 25 attached to the left front part 12 and the right front part 13 of the jacket body 10, respectively, and the left and right abdomen structures are arranged. When the airbag 50 is inflated, the portions 81 protrude downward from the chest protector 25 and the inflated abdominal inflatable portion 61 is disposed on the front side of the abdomen UA of the occupant D. It is folded and stored.

  Therefore, in the embodiment, when the airbag 50 is inflated, the abdomen inflating portion 61 that is wide in the left-right direction is disposed to protrude downward from the chest protector 25, so that the abdomen UA of the occupant D can be protected accurately. (See FIGS. 12 and 15). The chest protector 25 can be configured to be small without extending down to the abdomen UA of the occupant D, and the chest UC of the occupant D together with the chest inflating part 60 in a state that does not obstruct the operation of the upper body U of the occupant D as much as possible. It can be protected accurately.

  Furthermore, in the embodiment, when the airbag 50 is folded and stored, the head inflating portion 57 is a roll fold that resists the elimination of the folding, and the abdomen inflating portion 61 in the downstream portion FD can quickly eliminate the folding. As shown in FIG. Therefore, even when the abdomen inflating portion 61 is disposed at the distal end FDT of the downstream portion FD of the inflating gas when the airbag 50 is inflated, it can be inflated more quickly than when the head inflating portion 57 is inflated. Can be completed. As a result, in the occupant protection jacket P of the embodiment, the abdomen inflating part 61 close to the handle 1 and away from the inflator 48 can be quickly inflated, so that the abdomen UA of the occupant D is It can protect from the handle 1 accurately.

  Incidentally, if the above points are not taken into consideration, the head expanding portion 57 may be folded by bellows folding, cactus folding, or the like, or the belly expanding portion 61 may be folded by bellows folding, roll folding, or the like.

  In the embodiment, the slide fastener 14 is exemplified as the coupling means for coupling the left front portion 12 and the right front portion 13 of the front body 11 in the jacket main body 10, but other than that, a surface fastener, a button, a belt with a buckle, etc. May be used.

  Further, in the occupant protection jacket P of the embodiment, the case where the garment body 10 is the best type is shown, but it may be a jacket type that covers the sleeve of the occupant D.

  Furthermore, in the embodiment, the scooter type motorcycle P is exemplified as the vehicle on which the occupant D who wears the occupant protection jacket P rides. However, the occupant protection jacket P of the present invention includes other ordinary motorcycles and three-wheelers. It is suitable for a passenger who rides a vehicle such as a type of scooter, side car, open car, etc. that can travel at a predetermined speed or higher and that may be released to the road surface outside the vehicle when an accident occurs.

10 ... Body body,
11 ...
12 ... Left front,
13 ... right front,
14 ... (joining means) slide fastener,
18 ... Back body,
25 ... Chest protector,
50 ... Airbag,
51 ... Back expansion part,
55 (55L, 55R) ... branch expansion part,
57 (57L, 57R) ... head inflating part 59 (59L, 59R) ... front inflating part,
60 (60L, 60R) ... chest expansion part,
61 (61L, 61R) ... abdominal inflatable part,
64 ... Airbag base fabric,
65 ... front side wall part,
66 ... back side wall,
67 ... Seam part,
71 ... rear component,
75 (75L, 75R) ... branch component,
77 (77L, 77R) ... intermediate component,
79 (79L, 79R) ... chest component,
80 (80L, 80R) ... chest component,
81 (81L, 81R) ... abdominal component,
84 ... Rear mounting part,
85 ... front mounting part,
FU ... upstream part,
FD ... downstream part,
V ... (vehicle) motorcycle,
D ... Crew,
P ... Crew protection jacket.

Claims (4)

The airbag for inflating the inflatable gas to protect the occupant is an occupant protection garment configured to be attached to the garment body,
The jacket body is configured to include a front body having a left front part and a right front part that are coupled to each other by coupling means so that the front body can be opened, and a rear body.
The airbag is
A back inflatable part that is attached to the back body of the jacket main body and that inflates the back side of the occupant so as to protect it as an upstream part of the inflation gas;
A left branch expansion part and a right branch expansion part that branch left and right from the upper end of the back expansion part;
And configured with
When the left branch inflation portion and the right branch inflation are completed,
A head inflating portion that extends from the back inflating portion to the front upper side and is disposed on each side of the occupant's head in the left-right direction, and inflates the head in a protective manner;
Extends downward from the front end of the head expansion part so as to be a downstream portion of the inflation gas, and is disposed in front of the abdomen from the left and right chests on the front side of the occupant to protect the occupant's chest and abdomen A front expansion portion that expands into
Further comprising
The airbag is configured as a planar airbag type formed by overlapping airbag base fabrics having the same shape with each other and connecting outer peripheral edges.
One of the airbag base fabrics is a front side wall portion disposed on the outer surface side when the airbag is inflated, and the other side of the airbag base fabric is an occupant side when the airbag is completely inflated It is configured as a back side wall portion arranged in
The deployment shape of the airbag in a state where the front side wall portion and the back side wall portion are overlapped and flattened is a rear configuration portion constituting the rear inflating portion, and left and right from the upper end of the rear configuration portion, respectively. A left branch constituent part and a right branch constituent part, which are arranged so as to invert while branching, and constitute the left branch inflating part and the right branch inflating part,
The left branch component and the right branch component each include an intermediate component that constitutes the head expansion part, and a front component that constitutes the front expansion part.
In a state where the front side wall portion and the back side wall portion of the airbag are overlapped and flattened,
The left and right front components are respectively disposed on the left and right sides of the rear component; and
The height of the intermediate components on the left and right sides extending from the lower edge to the upper edge is such that the side of the occupant's head can be covered by the head inflatable portion when inflated, As the configuration arranged to extend outward from the upper end of the left and right direction, and to be connected to the upper ends of the left and right front components,
The back component is attached to the back body of the jacket body,
Bend the end on the back side of the rear component so that the left and right intermediate components are close to each other, and expand and expand each of the upper and lower shoulders of the garment body so as to cover the left and right shoulders of the occupant. Is folded and stored so that it approaches the lower edge,
The occupant protection jacket is characterized in that the left and right front constituent parts are attached to and disposed on a left front part and a right front part of the jacket body.   The left and right intermediate component parts each have a seam part obtained by joining the front side wall part and the back side wall part as a linear shape extending in the up-down direction, from the back surface part to the front part part. The occupant protection vest according to claim 1, wherein the occupant protection vest is arranged side by side.   In the state where the left and right intermediate components are flatly spread, the opening width of each end of the rear component side and the front component side is made smaller than the maximum width dimension in the vertical direction. 3. The occupant protection jacket according to claim 1, wherein the occupant protection jacket is formed in a substantially crescent shape with an upper bulge. The left and right front components are respectively
A chest component capable of forming a chest inflatable portion that swells on the front side of the occupant's chest, and an abdominal component portion disposed below the chest component and capable of forming a belly inflatable portion that swells on the front side of the occupant's abdomen; And configured with
It is configured to increase the width dimension in the left-right direction of the abdomen component part from the chest component part in a state of being flattened,
The left and right chest component parts are respectively disposed by covering the outer surface side with a chest protector attached to the left front part and the right front part of the jacket body,
The left and right abdomen constituting parts protrude downward from the chest protector when the airbag is inflated, and the abdomen inflated part is arranged on the front side of the abdomen of the occupant, so that the abdomen inflating part is disposed. The occupant protection jacket according to any one of claims 1 to 3, wherein the occupant protection jacket is folded and stored on the back side.

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