JP7444054B2 - worn airbag device - Google Patents

Description

The present invention relates to a wearable airbag device that is worn by a person to be protected and protects the part of the person to be protected by the inflated portion of the inflated airbag when the person falls.

Conventionally, wearable airbag devices use an acceleration sensor or an angular velocity sensor to detect a fall when a person to be protected (e.g., an elderly person) wears the device, and then use an acceleration sensor or an angular velocity sensor to detect the fall, and then use a predetermined airbag device that is inflated by inflation gas discharged from a gas generator. It is known that each airbag at each position covers the buttocks and lower back, which are the protected parts of the person to be protected, or the head and its left and right sides (for example, see Patent Documents 1 and 2). ). In addition, some airbags were inflated by inflating gas from a single gas generator to surround the lower back of the person being protected (for example, Patent Document (See 3).

Japanese Patent Application Publication No. 2000-317002 International Publication No. 2010/090317 International Publication No. 2019/207474

However, as described in Patent Documents 1 and 2, using a plurality of airbags corresponding to the number of parts to be protected requires a plurality of gas generators to supply inflation gas, which is bulky. There are problems with wearable airbag devices that are stretched or heavy and are worn by a person to be protected. Furthermore, as described in Patent Document 3, if the configuration is such that the inflation gas from one gas generator is flowed throughout the airbag that is disposed so as to surround the waist of the person to be protected, the air Since the capacity of the bag is large, a large gas generator is required, and a small and lightweight gas generator is desired as a wearable airbag device worn by a person to be protected.

The present invention solves the above-mentioned problems, and aims to provide a wearable airbag device that can use a small and lightweight gas generator for inflating an airbag.

The wearable airbag device according to the present invention is attached to the person to be protected, and is inflated by the inflation gas supplied from the gas generator that is activated when the person falls, and the airbag device protects the part of the person to be protected. A wearable airbag device comprising an airbag configured with an inflatable part that protects from falls,
The airbag is
A protective inflator that inflates at the inflated part at the time of completion of inflation to cover the part to be protected and has a thickness dimension that can secure a receiving stroke to protect the part to be protected upon contact with the tip of the fall. and
By installing a volume reduction part that reduces the internal volume,
It is characterized by being configured.

In the wearable airbag device according to the present invention, when the airbag is inflated while being attached to the person to be protected, the protective inflation portion at the inflation site of the airbag is arranged so as to cover the part to be protected of the person to be protected. Then, it comes into contact with the fall destination, and is compressed as a receiving stroke that can protect the protection target area, while protecting the protection target area from the fall destination. At that time, although the airbag is equipped with a protective expansion section that inflates thickly to ensure a predetermined receiving stroke, a volume reduction section is also installed to reduce the volume of the airbag. It is possible to efficiently inflate the airbag while suppressing an increase in the volume of the airbag, thereby increasing the protection of the area to be protected. Therefore, the amount of inflation gas discharged from the gas generator can be suppressed, and a small and lightweight gas generator can be used in the wearable airbag device.

Therefore, in the wearable airbag device according to the present invention, it is possible to use a small and lightweight gas generator for inflating the airbag.

In the wearable airbag device according to the present invention, the protective inflation portion of the airbag is configured as a cylinder having a hollow portion that penetrates along the inner surface of the airbag,
The volume reduction portion may be formed from the hollow portion.

In such a configuration, the thickness of the protective inflation portion of the airbag when inflation is completed can be increased from the inner surface to the outer surface on the side of the protected person by providing a hollow portion, Even if a protected person wearing a wearable airbag device falls and attempts to bring the protected area into contact with the fall destination, the outer surface of the protective inflatable portion immediately comes into contact with the fall destination, and the hollow part While being crushed, it is compressed so that the outer surface approaches the inner surface, thereby protecting the area to be protected from falling. At this time, in addition to the compression deformation of the outer and inner expansion parts of the hollow part of the protective expansion part, there is also compression deformation of the expansion part of the peripheral edge of the hollow part when the hollow part is crushed, and the impact By increasing the amount of energy absorbed, the protective expansion part has good cushioning properties and can protect the protected area from falls. In other words, in such a configuration, the receiving stroke that can receive the part to be protected with good cushioning properties is difficult to achieve because the thickness dimension from the inner side to the outer side of the protective expansion part including the hollow part becomes large. , which can be secured for a long time. Of course, since the airbag having the above structure has a hollow portion that does not allow inflation gas to flow in, it is possible to suppress an increase in volume.

Furthermore, in the wearable airbag device according to the present invention, the airbag includes a protrusion that protrudes outward on the outer surface when inflation is completed;
The protective expansion portion is disposed at a region provided with the protrusion,
A periphery of the protrusion may constitute the volume reduction region.

In such a configuration, the thickness of the protective inflation portion of the airbag when inflation is completed can be increased from the inner surface to the outer surface on the side of the person to be protected by providing the protrusion. Even if a protected person wearing a wearable airbag device falls and attempts to bring the protected area into contact with the fall destination, the protective inflatable section, which has a protrusion and a thicker thickness, will come into contact with the fall destination. While being compressed and deformed, it has good cushioning properties and can prevent interference between the protected area and the fall destination. That is, with such a configuration, the protective inflation portion of the airbag upon completion of inflation can secure a long receiving stroke in which the protruding portion can receive the area to be protected with good cushioning properties. And of course, the airbag can have a volume reduction part arranged around the protrusion that forms the protective inflatable part in the form of a non-protrusion that is recessed relative to the protrusion, so that the volume can be increased. It is possible to suppress the protective expansion part provided with the protrusion part.

In this case, the airbag is formed into a bag shape by joining the outer peripheral edges of an inner panel disposed on the inner surface and an outer panel disposed on the outer surface when inflation is completed. As,
The outer panel is
The airbag is formed from a plurality of divided panels along the outer surface of the airbag, and
comprising a central divided panel in the region forming the protrusion, and side divided panels adjacent to both sides of the central divided panel,
Both of the connecting edges of the central dividing panel and the side dividing panels that are connected to each other are configured such that a convex part that protrudes in a chevron shape is disposed in the region of the protruding part,
The protrusion may be formed by the protrusion.

In such a configuration, when the edges on both sides of the central dividing panel in the outer panel of the airbag are interconnected with the corresponding edges of the side dividing panels on both sides, the airbag protrudes in a mountain shape when the airbag is inflated. The convex portion forms a protruding portion, and the region around the convex portion can form a volume reduction region as a non-protruding portion. That is, in the above configuration, the protruding part of the protective expansion part and the volume reduction part adjacent to the protruding part can be easily formed by dividing the outer panel into predetermined shapes.

Further, in a configuration in which a protruding portion is provided to form a protective inflation portion, the airbag has an inner panel disposed on the inner surface when inflation is completed, and an outer panel disposed on the outer surface. As a structure in which the peripheral edges are joined together to form a bag shape,
The outer panel is formed from an outer panel base fabric, and a knob is disposed on the outer edge side of the outer panel base fabric in the region of the protrusion, and the knob portion is formed by connecting separated parts to each other. is,
The airbag is formed by joining the outer peripheral edges of the outer panel provided with the knob portion and the inner panel,
The protrusion may be formed by the knob.

In such a configuration, when the airbag is inflated, the part where the knob is provided forms a protrusion that protrudes in a mountain shape, and the part around the protrusion that is away from the knob becomes a non-protruding part. As a part, a volume reduction part can be formed. That is, in the above configuration, the protrusion of the protective expansion part and the volume reduction part adjacent to the protrusion can be easily formed by simply providing the knob on the outer panel.

In the wearable airbag device according to the present invention, the protective inflation portions of the airbag are arranged on the left and right sides of the airbag so as to protect the vicinity of the right and left femoral trochanters in the lower back region of the person to be protected. In addition, top portions with increased thickness may be arranged to extend in the left-right direction.

With this configuration, when the airbag is fully inflated, the protective inflation part that inflates thickly can cover and protect the protruding femoral trochanteric area near the left and right femurs, which would require prolonged treatment if damaged. The person to be protected can be suitably protected in the event of a fall. In addition, if the protective inflatable part is arranged so that the top part that increases the thickness when the inflation is completed extends in the left-right direction, even if the person to be protected falls while rotating, The vicinity of the rotating left and right femoral trochanteric parts can be widely covered, and the vicinity of the left and right femoral trochanteric parts, which are areas to be protected, can be suitably protected.

1 is a schematic front view and a schematic back view of a wearable airbag device according to a first embodiment of the present invention. FIG. FIG. 2 is a schematic rear view of the airbag used in the wearable airbag device of the first embodiment when it is inflated in a flat and expanded state. 3 is a schematic cross-sectional view of the airbag of the first embodiment, corresponding to the section III-III in FIG. 2. FIG. 3 is a schematic cross-sectional view of the airbag of the first embodiment, corresponding to the section IV-IV in FIG. 2. FIG. FIG. 2 is a developed view showing constituent materials of the airbag of the first embodiment. FIG. 2 is a schematic vertical cross-sectional view of the wearable airbag device of the first embodiment when it is in operation. FIG. 2 is a diagram illustrating the state of a person to be protected who is wearing the wearable airbag device of the first embodiment when the person falls. It is a figure explaining the behavior of the protective expansion part at the time of operation of the wearable airbag device of a 1st embodiment. FIG. 7 is a schematic front view and a schematic back view of a wearable airbag device according to a second embodiment. FIG. 7 is a schematic rear view of the airbag used in the wearable airbag device of the second embodiment when it is inflated in a flat and expanded state. 11 is a schematic cross-sectional view of the airbag of the second embodiment, corresponding to the section XI-XI in FIG. 10. FIG. FIG. 7 is a developed view showing constituent materials of an airbag according to a second embodiment. FIG. 7 is a schematic longitudinal cross-sectional view of the wearable airbag device according to the second embodiment when it is in operation. FIG. 7 is a schematic front view and a schematic back view of a wearable airbag device according to a third embodiment. FIG. 7 is a schematic rear view of the airbag used in the wearable airbag device of the third embodiment when it is inflated in a flattened state; 16 is a schematic cross-sectional view of an airbag according to a third embodiment, corresponding to the section XVI-XVI in FIG. 15. FIG. FIG. 7 is a developed view showing constituent materials of an airbag according to a third embodiment. FIG. 7 is a schematic vertical cross-sectional view of the wearable airbag device according to the third embodiment when it is in operation. It is a figure explaining the modification of the attachment member which attaches an airbag to a person to be protected. It is a figure explaining another modification of the attachment member which attaches an airbag to a person to be protected.

Hereinafter, embodiments of the present invention will be described based on the drawings. As shown in FIGS. 1 to 6, the wearable airbag device 10 of the first embodiment includes a gas generator 20 and a An operation control device 17 that includes an airbag 30 that is inflated by gas G, a sensor unit 18 that detects a fall of the person to be protected 1, and that operates the gas generator 20; It is configured to include a vest-type mounting member 11 that holds a control device 17 and is worn on the person to be protected 1.

The mounting member 11 is configured as a vest that can be worn on the upper body 1a of the person to be protected, and includes a left front part 12 and a right front part 13 that cover the front of the upper body 1a of the person to be protected. It is configured to include a back surface portion 14 that covers the back surface of the device, and further includes a fastener 16 such as a fastener that connects the inner edges 12a, 13a of the left front portion 12 and right front portion 13 to each other.

The operation control device 17 includes a sensor unit 18 that includes an angular velocity sensor capable of detecting angular velocity around three axes (up, down, front, back, left and right) and an acceleration sensor capable of detecting acceleration in three axes (up, down, front, back, left and right). In addition, when it is detected based on a signal from the sensor section 18 that the person to be protected 1 is performing a falling motion that is different from the normal motion, the gas generator 20 is activated. Specifically, the operation control device 17 uses a determination means that can determine from various threshold values that the person to be protected 1 has started a falling motion that is different from the normal motion, based on the signal from the sensor section 18. In preparation, based on the determination by the determination means, it is detected that the person to be protected 1 has fallen, and the gas generator 20 is activated. The operation control device 17 also has a built-in power source such as a battery (not shown) for operating the sensor section 18 and outputting signals for operating the gas generator 20.

The operation control device 17 is attached to the lower part 14a side of the back portion 14 of the mounting member 11, covered with a cover cloth (not shown) or the like so as not to come into contact with the clothes of the person to be protected 1.

As shown in FIG. 4, the gas generator 20 includes a substantially cylindrical main body 20a that stores an inflation gas G made of compressed carbon dioxide, etc., and a small diameter substantially cylindrical main body 20a at the tip of the main body 20a. The gas discharge part 20b is provided with a discharge port 20c for discharging the inflation gas G. The gas generator 20 inputs an operation signal from the operation control device 17 that detects the fall of the person to be protected 1, and operates an initiator (not shown) disposed near the boundary between the main body 20a and the gas discharge section 20b. By breaking a burst disk (not shown), the inflation gas G stored in the main body portion 20a is discharged from the discharge port 20c of the gas discharge portion 20b.

The airbag 30 covers the vicinity of the left and right femoral trochanteric parts 3 (L, R) of the lower back 2 as the protection target part 5 of the person to be protected 1, and protects the area from the ground contact surface of the fall destination 8 (see FIG. 7). An approximately rectangular main body inflation part that covers the side surfaces of the lower back region 2 including the vicinity of the left and right femoral trochanteric parts 3 (L, R) as an inflation part 37 that protects and inflates by letting the inflation gas G flow in. 39 (L, R), and a communicating inflatable part 38 that communicates with the upper ends of the left and right main body inflatable parts 39 (L, R).

The main body inflatable part 39 (L, R) has a protective inflatable part 40 (L, R) that covers and protects the outside of the left and right femoral trochanteric parts 3 (L, R) on the lower side. An upper edge side inflatable portion 47 that communicates with the communication inflatable portion 38 is disposed on the upper side.

The communication inflation section 38 is opened with an inlet 34 through which the inflation gas G flows, and a curved cylindrical connection port connected to the gas discharge section 20b side of the gas generator 20 is provided at the periphery of the inflow port 34. 35 are arranged. The gas discharge part 20b is inserted into the connection port 35, and is connected to the connection port 35 by fastening the clamp 21.

Note that the airbag 30 has a plurality of attachment tabs 30a attached to the upper edge 37a of the inflation portion 37, and these attachment tabs 30a are attached to the inner side of the attachment member 11 by sewing or the like. It is held by member 11. In addition, in the state before the wearable airbag device 10 is activated, the airbag 30 is folded and held by the mounting member 11 so that the lower edge 39b side of the main body inflatable portion 39 approaches the upper edge 39a side. Ru.

When the airbag 30 is fully inflated, the thickness T from the inner surface 32 to the outer surface 33 on the side of the person to be protected 1 is the same as that of the communication inflation portion 38 of the inflation portion 37 and the upper edge side of the main body inflation portion 39. The protective inflatable part 40 (L, R) is configured to be thickest than the inflatable part 47, and a volume reduction part is provided inside the protective inflatable part 40 (L, R) to reduce the internal volume of the airbag 30. 50 are arranged.

In the airbag 30 of the first embodiment, the protective inflation portion 40 (L, R) extends in the left-right direction (of the waist region 2 It is configured as a cylindrical loop-shaped inflatable part 41 having a hollow part 51 penetrating therethrough (both in the circumferential direction and also in the front-back direction when worn by the person to be protected 1). In the first embodiment, the hollow portion 51 constitutes the volume reduction region 50. In addition, in the protective inflatable parts 40 (L, R) of the airbag 30, the top part 45 that increases the thickness dimension T from the inner surface 32 to the outer surface 33 of the airbag 30 is located at the top and bottom of each protective inflatable part 40. It is arranged so as to extend in the left-right direction near the center of the direction.

In addition, the protective inflation part 40 (L, R) at the time of completion of inflation is a loop-shaped inflation part 41 provided with a hollow part 51 (see FIG. 3), as described above, and a curved plate-shaped airbag. 30, an inner layer part 41c on the inner surface 32 side, an outer layer part 41d on the outer surface 33 side, an upper joint part 41a which is a mutual joint part on the upper end side of the inner layer part 41c and the outer layer part 41d, and an inner layer part 41c. It is configured to include a lower joint portion 41b that serves as a mutual joint portion on the lower end side with the outer layer portion 41d. The upper joint part 41a is integrated below the upper edge inflatable part 47 on the upper edge 39a side of the main body inflatable part 39 that is continuous with the communication inflatable part 38, and is arranged so as to be continuous with the upper edge inflatable part 47. It is set up.

As shown in FIG. 5, the airbag base fabric 60 constituting the airbag 30 of the first embodiment includes an inner panel 61 forming the inner surface 32 side of the outer peripheral wall 31 of the airbag 30, and an inner panel 61 forming the inner surface 32 side of the outer peripheral wall 31 of the airbag 30; an outer panel 62 forming the outer side surface 33 of the left and right main body inflatable parts 39 (L, R), outer face panels 63, 63 forming the outer side faces of the left and right main body inflatable parts 39 (L, R), and left and right main body inflatable parts 39 (L, R) and peripheral wall panels 65, 65 that form the inner peripheral wall of each hollow portion 51. Each panel of these airbag base fabrics 60 is made of a woven fabric such as polyester, and the corresponding edges are sewn together, and a connecting port is provided at the periphery of the inlet 34 provided in the outer panel 62. 35 can be combined to form an airbag 30.

When manufacturing the wearable airbag device 10, the mounting tab 30a is attached to the airbag 30, and the gas generator 20 is assembled to the connection port 35 of the airbag 30 using the clamp 21, and the airbag 30 is assembled with the gas generator 20 using the clamp 21. The airbag 30 is folded so that the lower edge 39b side of the bag 30 approaches the upper edge 39a side, and the airbag 30 is attached to the attachment member 11 using the attachment tab 30a. By connecting a lead wire (not shown) for inputting an actuation signal from the control device 17 to the gas generator 20, the wearable airbag device 10 in which the mounting member 11 holds the airbag 30, the gas generator 20, etc. is manufactured. be able to.

In the wearable airbag device 10 of the first embodiment, the attachment member 11 is attached to the upper body 1a of the person to be protected 1 using the fastener 16, and then, as shown in FIG. 7, the person to be protected 1 falls. Then, the operation control device 17, which had input the signal from the sensor section 18, operates the gas generator 20, and the inflation gas G is discharged from the discharge port 20c of the gas discharge section 20b of the gas generator 20. , the airbag 30 will be inflated (see FIGS. 6 and 7).

When the airbag 30 is inflated while attached to the person to be protected 1, the protective inflation portions 40 (L, R) at the inflation site 37 of the airbag 30 are activated as the part to be protected 5 of the person to be protected 1. It is arranged to cover the trochanteric part 3 (L, R) of the femur, and as shown in A to C in FIG. The femoral trochanteric portion 3 (L, R) is protected from the falling destination 8 while being compressed as a possible receiving stroke SL. At this time, although the airbag 30 is provided with a protective expansion part 40 (L, R) that inflates thickly while ensuring a predetermined receiving stroke SL, it is not necessary to use the protective expansion part 40 (L, R) as a volume reduction part 50 to reduce the volume. Since the hollow portion 51 is provided, the airbag 30 can be inflated while suppressing an increase in the overall volume of the airbag 30 and efficiently thickening the protection of the protected area 5. . Therefore, the amount of inflation gas G discharged from the gas generator 20 can be suppressed, and a small and lightweight gas generator 20 can be used in the wearable airbag device 10.

Therefore, in the wearable airbag device 10 of the first embodiment, it is possible to use a small and lightweight gas generator 20 for inflating the airbag 30.

In the wearable airbag device 10 of the first embodiment, the protective inflation portion 40 (L, R) of the airbag 30 is provided with a hollow portion 51 that penetrates along the inner surface 32 of the airbag 30. It is configured in a cylindrical shape, and the volume reduction portion 50 is configured from a hollow portion 51 .

Therefore, in the first embodiment, the protective inflation portion 40 (L, R) of the airbag 30 when inflation is completed has a thickness T from the inner surface 32 to the outer surface 33 on the person to be protected 1 side in the hollow portion. 51 to make it thicker, and when the person to be protected 1 wearing the wearable airbag device 10 falls (see FIG. 7), the femoral trochanteric region 3 (L . Next, as shown in FIGS. 8B and 8C, the hollow portion 51 is crushed and compressed so that the outer surface 33 side approaches the inner surface 32 side, and the femoral trochanteric portion 3 as the protection target region 5 is compressed. (L, R) can be protected from falling destination 8. At this time, in addition to compressive deformation of the expansion parts themselves of the outer layer part 41d on the outer peripheral side and the inner layer part 41c on the inner peripheral side in the hollow part 51 of the loop-shaped expansion part 41 as the protective expansion part 40 (L, R), When the portion 51 is crushed, compressive deformation of the upper joint portion 41a and the lower joint portion 41b as expansion parts of the periphery of the hollow portion 51 increases the amount of impact energy absorbed, and the protective expansion portion 40 ( L, R) have good cushioning properties and can protect the protected area 5 from the falling destination 8. That is, in such a configuration, the receiving stroke SL that can receive the protection target part 5 with good cushioning property is determined by extending the hollow portion 51 from the inner surface 32 side to the outer surface 33 side of the protective expansion part 40 (L, R). Since the interposed thickness dimension T becomes large, it becomes possible to secure a long time. Of course, since the airbag 30 has the hollow portion 51 into which the inflation gas G does not flow, it is possible to suppress an increase in volume.

Further, in the first embodiment, the protective inflation portion 40 (L, R) of the airbag 30 protects the vicinity of the left and right femoral trochanteric portions 3 (L, R) in the lower back region 2 of the person to be protected 1. , are arranged on the left and right sides of the airbag 30, and have top portions 45 that increase the thickness dimension T, respectively, arranged so as to extend in the left-right direction.

Therefore, in the first embodiment, when the airbag 30 is fully inflated, the protective inflatable parts 40 (L, R) that inflate thickly are used to protect the protruding femoral trochanters near the left and right femurs, which will require prolonged treatment if damaged. Since the vicinity of 3 (L, R) can be covered and protected, the person to be protected 1 when falling down can be suitably protected. In addition, if the protective inflatable part 40 (L, R) is arranged so that the top part 45 that increases the thickness dimension T thereof when the inflation is completed extends in the left-right direction, the person to be protected 1 can rotate. Even if the person falls down, the area around the rotating left and right femoral trochanteric parts 3 (L, R) can be widely covered, and the right and left femoral trochanteric parts 3 (L, R) as protection target parts 5 can be preferably protected. ) can protect the vicinity.

Of course, unless the above points are taken into account, the hollow portion 50 may be penetrated in the vertical direction along the inner surface 32, and the top portion 45 may be disposed along the vertical direction.

Further, as the protection target site 5 of the protection target 1, a protective inflation section 40 including a loop-shaped expansion section 41 may be configured to protect the head of the protection target 1.

Next, the wearable airbag device 10A of the second embodiment shown in FIGS. 9 to 13 will be described. In the wearable airbag device 10A of the second embodiment, the airbag 30 of the first embodiment is In contrast, in the airbag 30A of the second embodiment, a protruding part 43 is provided to constitute the protective inflation part 40A (L, R). They are different in that they are. Note that the mounting member 11, the operation control device 17 having the sensor section 18, and the gas generator 20 are the same as those in the first embodiment.

As shown in FIGS. 9 to 13, the airbag 30A of the second embodiment is provided with a protrusion 43 that protrudes outward on the outer surface 33 when inflation is completed, and the portion where the protrusion 43 is provided is , and constitute a protective expansion section 40A (L, R). Both upper and lower sides around the protruding portion 43 constitute a non-protruding portion 52 as a volume reduction portion 50A.

The airbag 30A of the second embodiment is similar to the airbag 30 of the first embodiment, near the left and right femoral trochanteric parts 3 (L, R) in the lower back 2 as the protection target site 5 of the person to be protected 1. It covers and protects from the ground surface of the fall destination 8 (see Fig. 7), and the area near the left and right femoral trochanters 3 (L, R) serves as the inflation site 37 that is inflated by the influx of inflation gas G. A substantially rectangular main body inflatable part 39 (L, R) that covers the side surfaces of the waist part 2 including It is composed of

The main body expansion part 39 (L, R) is provided with a protruding part 43 on the lower side so as to cover and protect the outside of the left and right femoral trochanter parts 3 (L, R). An inflatable part 40A (L, R) is disposed, and on both upper and lower sides thereof, an upper edge inflatable part 47 and a lower edge inflatable part 48, which are smaller in thickness than the protective inflatable part 40A (L, R) during inflation, are being set up. In addition, these upper edge side expansion parts 47 and lower edge side expansion parts 48 have a shape that is concave relative to the protrusion part 43 and form a non-protrusion part 52, and further, unlike the protrusion part 43, Since it is not configured to protect the protected area 5, it is not necessary to make it thick so that the volume of the airbag 30A can be reduced as much as possible. Therefore, these upper edge side inflatable portion 47 and lower edge side inflatable portion 48 constitute a non-protruding portion 52 as a volume reduction portion 50A.

Similar to the first embodiment, the communication inflation section 38 has an inlet 34 that allows the inflation gas G to flow therein, and the inlet 34 is connected to the gas discharge section 20b side of the gas generator 20 at the periphery thereof. A connection port 35 having a curved cylindrical shape is provided. The gas discharge part 20b is inserted into the connection port 35, and is connected to the connection port 35 by fastening the clamp 21.

Note that, similar to the first embodiment, the airbag 30A has a plurality of attachment tabs 30a arranged on the upper edge 37a of the inflation portion 37, and these attachment tabs 30a are attached to the attachment member 11 by sewing or the like. It is attached to the inner surface side of and held by the mounting member 11. Furthermore, in the state before the wearable airbag device 10A is activated, the airbag 30A is folded so that the lower edge 39b side of the main body inflatable portion 39 approaches the upper edge 39a side, similar to the first embodiment. and is held by the mounting member 11.

When the airbag 30A is fully inflated, the thickness T from the inner surface 32 to the outer surface 33 on the side of the protected person 1 is the same as that of the upper edge side of the communication inflation portion 38 of the inflation portion 37 and the main body inflation portion 39. The protective inflatable portion 40A (L, R) is configured to be thickest than the edge-side inflatable portion 47 and the lower edge-side inflatable portion 48 on the lower edge side. This protective inflatable part 40A has a protruding part 43 that protrudes from the upper and lower edge inflatable parts 47 and 48 in a substantially trapezoidal shape (substantially a truncated quadrangular pyramid shape) to increase the thickness dimension T. The substantially trapezoidal protrusion 43 has a top portion 45 extending in the left-right direction.

As shown in FIG. 12, the airbag base fabric 70 constituting the airbag 30A of the second embodiment is made of a flexible woven fabric such as polyester, and is used for the outer peripheral wall of the airbag 30A. 31 and an outer panel 72 that forms the outer surface 33 side of the outer peripheral wall 31. The outer panel 72 is formed from divided panels 73, 75, and 77 divided into a plurality of parts along the outer surface 33 of the airbag 30A. These divided panels 73, 75, 77 are configured to include a central divided panel 73 in the region forming the protrusion 43, and side divided panels 75, 77 adjacent to both left and right sides of the central divided panel 73. There is. The connecting edges 74c, 76c, 78c of the center dividing panel 73 and the side dividing panels 75, 77 are connected to each other, and the convex portions 74d, 76d projecting in a mountain shape in the area of the protruding portion 43, 78d.

The center dividing panel 73 is disposed at the center in the left-right direction on the outer surface 33 side of the left and right main body inflating parts 39L, 39R, and the side dividing panel 75 is disposed at the center of the left and right main body inflating parts 39L, 39R. It is disposed on the edge side in the left-right direction on the outer surface 33 side. The side dividing panel 77 is a common side dividing panel 77 that forms the edges of the left and right main body inflation parts 39L, 39R that approach each other on the outside surface 33 side, and the outside surface 33 side of the communication expansion part 38. It is said that

The central dividing panel 73 has upper and lower joining edges 74a and 74b on the outer peripheral edge 74 as edges that are joined to the inner panel 71, and a lateral joining edge 74c provided with left and right convex portions 74d as an edge that is connected to the corresponding side divided panel. The edges are connected to lateral connecting edges 76c, 78c provided with convex portions 76d, 78d of 75, 77.

The side split panel 75 has upper and lower joining edges 76a, 76b on the outer peripheral edge 76 and a lateral joining edge 76e not provided with the protrusion 76d as an edge to be joined to the inner panel 71, and a lateral joining edge 76e provided with the protrusion 76d. The joining edge 76c is an edge that is joined to the lateral joining edge 74c of the central dividing panel 73.

The side dividing panel 77 connects the upper and lower connecting edges 78a and 78b of the outer peripheral edge 78 and the inverted U-shaped lower connecting edge 78f, including the lateral edge not provided with the convex portion 76d, to the inner panel 71. A lateral joining edge 78c provided with a convex portion 78d serves as an edge to be joined to the lateral joining edge 74c of the center dividing panel 73.

Then, the corresponding lateral joining edges 74c, 76c, 78c of the center dividing panel 73 and the side dividing panels 75, 77 are joined together by stitching to form the outer panel 72. If the outer peripheral edges 72a and 71a of the inner panel 71 are connected to each other by suture, and the mounting tab 30a is attached, and the connection port 35 is connected to the peripheral edge of the inlet 34 provided in the outer panel 72, air can be removed. A bag 30A can be formed.

When manufacturing the wearable airbag device 10A, similarly to the first embodiment, the gas generator 20 is assembled to the airbag 30A using the clamp 21, the airbag 30A is folded, and the mounting tab is 30a to the mounting member 11, and connect a lead wire (not shown) for inputting an operation signal from the operation control device 17, which has been attached to the mounting member 11 in advance, to the gas generator 20. It is possible to manufacture a wearable airbag device 10A in which the member 11 holds the airbag 30A, the gas generator 20, and the like. Then, the wearable airbag device 10A attaches the mounting member 11 to the upper body 1a of the person to be protected 1 using the fastener 16, and then inputs a signal from the sensor unit 18 when the person to be protected 1 falls. The operation control device 17 that was operating operates the gas generator 20, and the inflation gas G is discharged from the discharge port 20c of the gas discharge portion 20b of the gas generator 20, and the airbag 30A is inflated. (See Figures 11 and 13).

In the second embodiment, when the inflation is completed, the protective inflation portion 40A (L, R) of the airbag 30A has a thickness T from the inner surface 32 to the outer surface 33 on the person to be protected 1 side, 43 can be made thicker, and the person to be protected 1 wearing the wearable airbag device 10A falls and falls over the femoral trochanteric region 3 (L, R) as the part to be protected 5. Even if an attempt is made to make contact with the tip 8, the protective expansion portion 40A (L, R), which is provided with the protrusion 43 and has a thicker thickness T, comes into contact with the tip 8 of the fall, is compressed and deformed, and has good cushioning properties, and Interference between the bone trochanteric portions 3 (L, R) and the falling destination 8 can be prevented. That is, in such a configuration, the protective inflation portion 40A (L, R) of the airbag 30A upon completion of inflation can receive the protection target site 5 (femoral trochanteric portion 3) with good cushioning property due to the protruding portion 43. A long receiving stroke SL can be secured. Of course, the airbag 30A is provided with volume reduction parts 50A in the form of non-protruding parts 52 that are recessed relative to the protruding part 43 on both upper and lower sides around the protruding part 43 forming the protective inflatable part 40A. Therefore, the protective expansion portion 40A (L, R) provided with the protrusion portion 43 can be provided while suppressing an increase in volume.

In the airbag 30A of the second embodiment, the non-protruding portions 52 constituting the volume reduction portion 50A are disposed on both upper and lower sides of the protruding portion 43, but the non-protruding portions 52 constituting the volume reduction portion 50A are The protrusion 43 may be disposed somewhere around the protrusion 43 so as to be recessed relative to the protrusion 43. For example, the protrusion 43 may be disposed close to the lower edge 39b side of the main body expansion part 39. In such a case, the non-protruding part 52 as the volume reduction part 50A may be formed only by the upper edge side expansion part 47 on the upper side of the protruding part 43, or the non-protruding part 52 as the volume reduction part 50A may be formed on both the left and right sides of the protruding part 43, or on one of the left and right sides of the protruding part 43. , a non-protruding portion 52 constituting the volume reduction portion 50A may be provided.

Furthermore, in the second embodiment, when the airbag 30A is fully inflated, the outer peripheral edges 71a and 72a of the inner panel 71 disposed on the inner surface 32 and the outer panel 72 disposed on the outer surface 33 are are combined to form a bag-like structure. The outer panel 72 is formed from a plurality of (five in the embodiment) divided panels 73, 73, 75, 75, and 77 along the outer surface 33 of the airbag 30A, and the protrusion 43 is The center dividing panel 73 of the forming area and the side dividing panels 75 and 77 adjacent to the left and right sides of the central dividing panel 73 are configured, and the central dividing panel 73 and the side dividing panels 75 and 77 The coupling edges 74c, 76c, and 78c that are coupled to each other are configured by disposing convex portions 74d, 76d, and 78d that protrude in a mountain shape in the region of the protrusion portion 43.

Therefore, in the airbag 30A of the second embodiment, with respect to the edges 74c, 74c on both sides of the central division panel 73 in the outer panel 72 of the airbag 30A, the corresponding edges 76c, 78c of the side division panels 75, 77 on both sides , when the airbag 30A is inflated, the convex portions 74d, 76d, 78d that protrude in a mountain shape form the protruding portion 43, and the upper and lower portions between the convex portions 74d, 76d, 78d. The portions on both sides (edge-side expansion portions) 47 and 48 can form a volume reduction portion 50A as a non-protruding portion 52. That is, in the second embodiment, the protrusion 43 of the protective expansion part 40A and the volume reduction part 50A adjacent to the protrusion 43 can be easily separated by the divided panels 73, 75, and 77 obtained by dividing the outer panel 72 into predetermined shapes. can be formed into

Also, in the second embodiment, the protective inflation portion 40A (L, R) of the airbag 30A protects the vicinity of the left and right femoral trochanteric portions 3 (L, R) in the lower back region 2 of the person to be protected 1. , are arranged on the left and right sides of the airbag 30A, and have top portions 45 that increase the thickness dimension T, respectively, arranged so as to extend in the left-right direction.

Therefore, in the second embodiment as well, when the airbag 30A is fully inflated, the protective inflatable parts 40A (L, R) that inflate thickly are removed from the protruding femoral trochanters near the left and right femurs, which will require prolonged treatment if damaged. Since the vicinity of 3 (L, R) can be covered and protected, the person to be protected 1 when falling down can be suitably protected. Further, if the protective inflatable part 40A (L, R) is arranged so that the top part 45 that increases the thickness dimension T thereof when the inflation is completed extends in the left-right direction, the person to be protected 1 can rotate. Even if the person falls down, the area around the rotating left and right femoral trochanteric parts 3 (L, R) can be widely covered, and the right and left femoral trochanteric parts 3 (L, R) as protection target parts 5 can be preferably protected. ) can protect the vicinity.

Unless the above points are taken into consideration, when the protruding portion 43 is provided to configure the protective expansion portion 40A, the top portion 45 may be arranged along the up-down direction. Incidentally, the outer panel 72 of the main body inflatable portion 39 is divided into three divided panels in the vertical direction, and convex portions as in the second embodiment are formed in mutually adjacent portions of each divided panel. If the outer panels are formed by bonding the panels together, the top portions 45 of the protrusions 43 can be arranged along the vertical direction.

In addition, when the protruding portion 43 is provided to configure the protective expansion portion 40A, it is possible not only to use the vicinity of the femoral trochanteric portion 3 (L, R) as the protection target region 5, but also to protect the head of the person to be protected 1. An airbag may be configured with the part to be protected.

Further, as a structure in which a protruding portion is provided to form a protective inflatable portion, a structure similar to the wearable airbag device 10B of the third embodiment shown in FIGS. 14 to 18 may be used. In addition, in the wearable airbag device 10B of the third embodiment, the shape of the protruding part 43B provided on the protective inflation part 40B (L, R) of the airbag 30B is a shape that protrudes in a substantially semicircular column shape (substantially triangular column shape). The shape of the protruding portion 43 of the second embodiment is different from that of the second embodiment, and the other mounting member 11, the operation control device 17 having the sensor portion 18, and the gas generator 20 are the same as those of the second embodiment. things are used.

In the airbag 30B of the third embodiment, a protrusion 43B that protrudes outward is provided on the outer surface 33 when inflation is completed, and the area where the protrusion 43B is provided is the protective inflation part 40B (L, R ). Both upper and lower sides around the protruding portion 43B constitute a non-protruding portion 52B as a volume reduction portion 50B.

The airbag 30B of the third embodiment is similar to the airbag 30A of the second embodiment, near the left and right femoral trochanteric parts 3 (L, R) in the lower back region 2 as the protection target region 5 of the person to be protected 1. It covers the femoral trochanteric parts 3 (L, R) of the left and right femoral trochanteric parts 3 (L, R) as an expansion part 37 that is inflated by inflowing the inflation gas G. A substantially rectangular main body inflatable part 39 (L, R) that covers the side surface of the waist part 2 including the vicinity, and a communication inflatable part 38 that communicates with the upper ends of the left and right main body inflatable parts 39 (L, R). Configured with the necessary features.

The main body expansion part 39 (L, R) is provided with a protruding part 43B on the lower side so as to cover and protect the outside of the left and right femoral trochanteric parts 3 (L, R). An inflatable part 40B (L, R) is disposed, and on both upper and lower sides thereof, an upper edge inflatable part 47B and a lower edge inflatable part 48B, which are smaller in thickness than the protective inflatable part 40B (L, R) during inflation; are being set up. In addition, these upper edge side expansion parts 47B and lower edge side expansion parts 48B have a shape that is concave relative to the protrusion part 43B, and form a non-protrusion part 52B, and further, unlike the protrusion part 43B, Since it is not configured to protect the protection target portion 5, it is not necessary to make the airbag 30B thick so that the volume of the airbag 30B can be reduced as much as possible. Therefore, these upper edge side expansion portion 47B and lower edge side expansion portion 48B constitute a non-protrusion portion 52B as a volume reduction portion 50B.

Similar to the second embodiment, the communication inflation part 38 has an inlet 34 that allows the inflation gas G to flow therein, and the inlet 34 has an inlet 34 connected to the gas discharge part 20b side of the gas generator 20 at the periphery of the inlet 34. A connection port 35 having a curved cylindrical shape is provided. The gas discharge part 20b is inserted into the connection port 35, and is connected to the connection port 35 by fastening the clamp 21.

Note that, similar to the second embodiment, the airbag 30B has a plurality of attachment tabs 30a provided on the upper edge 37a of the inflation portion 37, and these attachment tabs 30a are attached to the attachment member 11 by sewing or the like. It is attached to the inner surface side of and held by the mounting member 11. Further, in the state before the wearable airbag device 10B is activated, the airbag 30B is folded so that the lower edge 39b side of the main body inflatable portion 39 approaches the upper edge 39a side, similar to the second embodiment. and is held by the mounting member 11.

When the airbag 30B is fully inflated, the thickness T from the inner surface 32 to the outer surface 33 on the side of the person to be protected 1 is equal to The protective inflatable portion 40B (L, R) is configured to be thickest than the edge-side inflatable portion 47B and the lower edge-side inflatable portion 48B on the lower edge side. This protective inflatable part 40B has a protruding part 43B that protrudes from the upper and lower edge inflatable parts 47B and 48B in a substantially semi-cylindrical shape (substantially triangular prism shape) to increase the thickness dimension T. The approximately semi-cylindrical protruding portion 43B has a top portion 45 extending in the left-right direction.

As shown in FIG. 17, the airbag base fabric 80 constituting the airbag 30B of the third embodiment is made of a flexible woven fabric such as polyester, The airbag 30B is composed of an inner panel 81 disposed on the outer surface 33 and an outer panel 82 disposed on the outer surface 33. They are combined to form a bag-like structure.

Furthermore, the outer panel 82 is formed from the outer panel base fabric 83, and the outer edge of the outer panel base fabric 83 in the area of the protrusion 43B (in the third embodiment, the edge on the left and right side, and the upper and lower edges) A knob in which a triangular notch 84 is provided on the edge) 83a, 83a side, and linear portions (separated edges) 84a, 84b that are vertically separated and extend substantially in the left-right direction are joined together by suture. 85 is arranged.

The airbag 30B connects the outer peripheral edges 82a and 81a of the outer panel 82 and the inner panel 81, in which the knobs 85 and 85 are provided, to each other by stitching, and also connects the outer peripheral edges 82a and 81a of the outer panel 82 and the inner panel 81, in which the knobs 85 and 85 are provided, to the peripheral edge of the inlet 34 provided in the outer panel 82. It can be formed by connecting the connection port 35.

Similarly to the second embodiment, the wearable airbag device 10B includes the steps of assembling the gas generator 20 to the airbag 30B, folding the airbag 30A, and attaching it to the mounting member 11 using the mounting tab 30a. If a lead wire (not shown) for inputting an operation signal from the operation control device 17 attached to the mounting member 11 in advance is connected to the gas generator 20, the airbag 30B, gas generator 20, etc. can be attached to the mounting member 11. A worn airbag device 10B that is held can be manufactured. Then, the wearable airbag device 10B attaches the mounting member 11 to the upper body 1a of the person to be protected 1 using the fastener 16, and then inputs a signal from the sensor unit 18 when the person to be protected 1 falls. The operation control device 17 that was operating operates the gas generator 20, and the inflation gas G is discharged from the discharge port 20c of the gas discharge portion 20b of the gas generator 20, and the airbag 30B is inflated. (See Figures 16 and 18).

Also in the third embodiment, when the inflation is completed, the protective inflation portion 40B (L, R) of the airbag 30B has a thickness T from the inner surface 32 to the outer surface 33 on the person to be protected 1 side, 43B can be made thicker, and the person to be protected 1 wearing the wearable airbag device 10B falls and falls over the trochanteric part 3 (L, R) of the femur as the part to be protected 5. Even if an attempt is made to make contact with the tip 8, the protective expansion part 40B (L, R), which is provided with the protruding part 43B and has a thicker thickness dimension T, will not be able to protect the target part 5 (femoral trochanteric part 3) due to the protruding part 43B. can be protected by ensuring a long receiving stroke SL that can receive the material with good cushioning properties. Of course, the airbag 30B has volume reduction portions 50B arranged in the form of non-protruding portions 52B that are recessed relative to the protruding portion 43B on both upper and lower sides of the protruding portion 43B forming the protective inflatable portion 40B. Therefore, the protective expansion portion 40B (L, R) provided with the protrusion portion 43B can be provided while suppressing the increase in volume.

Note that in the airbag 30B of the third embodiment, the non-protruding portions 52B constituting the volume reduction portion 50B are disposed on both upper and lower sides of the protrusion portion 43B; The protrusion 43B may be disposed somewhere around the protrusion 43B so as to be recessed relative to the protrusion 43B. For example, the protrusion 43B may be disposed close to the lower edge 39b side of the main body expansion part 39. In such a case, the non-protruding part 52B as the volume reduction part 50B is configured only by the upper edge side expansion part 47B on the upper side of the protruding part 43B, or the non-protruding part 52B as the volume reduction part 50B is formed on both the left and right sides of the protruding part 43B, or , a non-protruding portion 52B constituting the volume reduction portion 50B may be provided.

In addition, in the third embodiment, when the airbag 30B is fully inflated, the outer peripheral edges 81a and 82a of the inner panel 81 disposed on the inner surface 32 and the outer panel 82 disposed on the outer surface 33 are The outer panel 82 is formed from the outer panel base fabric 83 and has an outer edge 83a side in the area of the protrusion 43B of the outer panel base fabric 83. , a knob 85 is provided in which separated portions (separated edges) 84a and 84b are joined together by suture. Then, the airbag 30B is formed by joining the outer peripheral edges 82a and 81a of the outer panel 82 and the inner panel 81 provided with the knob 85, and the protrusion 43B is formed by the knob 85. There is.

Therefore, in the third embodiment, when the airbag 30B is inflated, the portion provided with the knob 85 forms a protrusion 43B that protrudes in a mountain shape. A horizontal triangular prism-shaped protrusion 43B is formed in which the parts 43A and 43B are arranged at both left and right ends, and the parts 47B and 48B on both upper and lower sides of the protrusion 43b away from the knob 85 are non-protrusions 52B. As a result, the volume-reduced portion 50B can be formed. That is, in the third embodiment as well, by simply providing the knob 85 on the outer panel 82, the protrusion 43B of the protective expansion part 40B (L, R) and the volume reduction parts 50B and 50B adjacent to the protrusion 43B can be Can be easily formed.

Further, in the third embodiment, the protective inflation portion 40B (L, R) of the airbag 30B protects the vicinity of the left and right femoral trochanteric portions 3 (L, R) in the lower back region 2 of the person to be protected 1. , are arranged on the left and right sides of the airbag 30B, and have top portions 45 that increase the thickness dimension T, respectively, arranged so as to extend in the left-right direction.

Therefore, in the third embodiment as well, when the airbag 30B is fully inflated, the protective inflatable parts 40B (L, R) that inflate thickly are removed from the protruding femoral trochanter parts near the left and right femurs, which will require prolonged treatment if damaged. Since the vicinity of 3 (L, R) can be covered and protected, the person to be protected 1 when falling down can be suitably protected. In addition, if the protective inflatable part 40B (L, R) is arranged so that the top part 45 that increases the thickness dimension T thereof when the inflation is completed extends in the left-right direction, the person to be protected 1 can rotate. Even if the person falls down, the area around the rotating left and right femoral trochanteric parts 3 (L, R) can be widely covered, and the right and left femoral trochanteric parts 3 (L, R) as protection target parts 5 can be preferably protected. ) can protect the vicinity.

Of course, if the above points are not taken into consideration, even in the third embodiment, when the protruding part 43B is provided to configure the protective expansion part 40A, the top part 45 is arranged along the vertical direction. Good too. Incidentally, the outer edge portion of the outer panel 82 is defined as the upper edge 39a and lower edge 39b of the main body inflatable portion 39 of the airbag 30B as the outer edge (the edge on the vertical side and the horizontal edge along the left-right direction). If the knob 85 is formed, the top 45 of the protrusion 43B can be arranged along the vertical direction.

In addition, when the protruding portion 43B is provided to configure the protective expansion portion 40B, not only the vicinity of the femoral trochanteric portion 3 (L, R) is used as the protection target region 5, but also the head of the person to be protected 1. An airbag may be configured with the part to be protected as the part to be protected.

Further, in each of the embodiments, a vest is illustrated as the mounting member 11 for holding the airbag 30, etc., but a jacket with sleeves may also be used.Furthermore, as shown in FIG. The mounting member 11A may be configured from an outer cover that covers the airbag 30 as shown in FIG. This mounting member 11A is equipped with a fastener 16A such as a hook-and-loop fastener that can fasten the left and right terminals to each other, and the mounting member 11A to which the airbag 30, gas generator 20, etc. are attached is attached to the vicinity of the waist 2 of the person to be protected 1. By wrapping it around and fastening the fastener 16A, the person to be protected 1 can wear the wearable airbag device 10.

Further, as shown in FIG. 20, the mounting member 11B may be constructed from a belt having fasteners 16B made of clip materials that can be connected to each other provided at both ends. The mounting member 11B includes a belt main body 11a having fasteners 16B disposed at both ends, and a cover portion 11b that covers the upper edge 37a of the airbag 30 including the vicinity of the communicating inflatable portion 38 and is attached to the upper edge 37a side. , and a plurality of belt loops 11c attached to the back side of the cover portion 11b so that the belt main body 11a can be inserted therethrough. With this attachment member 11B, when the airbag 30 with the gas generator 20 etc. is attached is wrapped around the waist 2 of the person to be protected 1 and the fastener 16B is fastened, the wearable airbag device 10 is protected. It can be made to be worn by the subject 1.

1... Person to be protected, 2... Lower back, 3 (L, R)... Femoral trochanteric region, 5... Part to be protected, 8... Fall destination, 10, 10A, 10B... Worn airbag device, 20... Gas generator , 30, 30A, 30B...airbag, 31...outer peripheral wall, 32...inner surface, 33...outer surface, 37...inflation site, 40(L,R), 40A(L,R), 40B(L,R) ...Protection expansion part, 43, 43B...Protrusion part, 45...Top part, 50, 50A, 50B...Volume reduction part, 51...Hollow part,
71...Inner panel, 71a...Outer periphery, 72...Outer panel, 72a...Outer periphery, 73...Central division panel, 74d...Protrusion, 75...Side division panel, 76d...Protrusion, 77...(Common) side Divided panel, 78d...convex portion,
81... Inner panel, 81a... Outer periphery, 82... Outer panel, 82a... Outer periphery, 83... Base fabric for outer panel, 84a... (Top) separation edge, 84b... (Lower) separation edge, 85... Knob portion,
SL... Reception stroke, T... Thickness dimension, G... Expansion gas.

Claims (3)

An inflatable part is installed on the person to be protected and is inflated by the inflation gas supplied from the gas generator that is activated when the person falls, protecting the person's target area from the fall. A wearable airbag device comprising an airbag configured with
The airbag is
A protective inflator that inflates at the inflated part at the time of completion of inflation to cover the part to be protected and has a thickness dimension that can secure a receiving stroke to protect the part to be protected upon contact with the tip of the fall. and a volume reduction part for reducing the internal volume ,
The airbag includes a protrusion that protrudes outward on an outer surface when inflation is completed,
The protective expansion portion is disposed at a region provided with the protrusion,
The periphery of the protrusion constitutes the volume reduction region,
The airbag has a configuration in which the airbag is formed into a bag shape by joining the outer peripheral edges of an inner panel disposed on the inner surface and an outer panel disposed on the outer surface when inflation is completed,
The outer panel is
It is formed from a plurality of divided panels along the outer surface of the airbag, and includes a central divided panel in a region forming the protrusion, and side divided panels adjacent to both sides of the central divided panel; configured with
Both of the connecting edges of the central dividing panel and the side dividing panels that are connected to each other are configured such that a convex portion projecting in a chevron shape is disposed in the region of the protruding portion,
A wearable airbag device characterized in that the protruding portion is formed by the convex portion . An inflatable part is installed on the person to be protected and is inflated by the inflation gas supplied from the gas generator that is activated when the person falls, protecting the person's target area from the fall. A wearable airbag device comprising an airbag configured with
The airbag is
A protective inflator that inflates at the inflated part at the time of completion of inflation to cover the part to be protected and has a thickness dimension that can secure a receiving stroke to protect the part to be protected upon contact with the tip of the fall. and a volume reduction part for reducing the internal volume ,
The airbag includes a protrusion that protrudes outward on an outer surface when inflation is completed,
The protective expansion portion is disposed at a region provided with the protrusion,
The periphery of the protrusion constitutes the volume reduction region,
The airbag has a configuration in which the airbag is formed into a bag shape by joining the outer peripheral edges of an inner panel disposed on the inner surface and an outer panel disposed on the outer surface when inflation is completed,
The outer panel is formed from an outer panel base fabric, and a knob is disposed on an outer edge side of the outer panel base fabric in the region of the protrusion, and the knob portion is formed by connecting separated portions to each other. is,
The airbag is formed by joining together the outer peripheral edges of the outer panel and the inner panel provided with the knob,
A wearable airbag device , wherein the protrusion is formed by the knob . The protective inflation portion of the airbag is disposed on the left and right sides of the airbag so as to protect the vicinity of the right and left femoral trochanters in the lower back region of the person to be protected, and the top portion has a thicker thickness dimension. The wearable airbag device according to claim 1 or 2, wherein the wearable airbag device is configured to be arranged so as to extend in the left-right direction, respectively.

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