JP2022104300A - Wearing airbag device - Google Patents

Abstract

To provide a wearing air bag device which can use, as a gas generator for expanding an air bag, a small and light gas generator.SOLUTION: A wearing airbag device 10 comprises an air bag 30 which is worn by a person 1 to be protected, expanded by expansion gas G supplied by a gas generator 20 which operates when the person to be protected falls, and is configured by arranging an expansion site 37 which protects a protection object site 5 of the person to be protected from the falling destination. In the airbag, protection expansion parts 40 (L, R) and a volume reduction site 50 are arranged at an expansion site obtained when the expansion completes, the protection expansion parts covering the protection object site and expanding with a thickness dimension T capable of securing a receiving stroke which can be compressed so as to protect the protection object site when contact is made with the falling destination, and the volume reduction site reducing the inner volume.SELECTED DRAWING: Figure 6

Description

The present invention relates to a worn airbag device that is worn by a protected person and protects the protected part of the protected person by an inflated part of the airbag when the protected person falls or the like.

Conventionally, as a worn airbag device, when a person to be protected (for example, an elderly person) who wears the airbag falls, the fall is detected by an acceleration sensor or an angular velocity sensor, and the airbag is inflated by the expansion gas discharged from the gas generator. It is known that each airbag at a position covers the buttocks and waist, which are the protected parts of the protected person, or the head and its left and right sides (see, for example, Patent Documents 1 and 2). ). In addition, there is also one in which an expansion gas from one gas generator is inflowed to inflate the airbag so as to surround the waist portion as a protection target portion of the protection target person (for example, Patent Document). 3).

Japanese Unexamined Patent Publication No. 2000-31002 International Publication No. 2010/090317 International Publication No. 2019/20474

However, as described in Patent Documents 1 and 2, when a plurality of airbags corresponding to the number of protected parts are used, a plurality of gas generators for supplying expansion gas are also required, which is bulky. There is a problem as a wearing airbag device that is stretched or becomes heavy and is worn by a person to be protected. Further, as described in Patent Document 3, if the configuration is such that the expansion gas from one gas generator is allowed to flow through the entire airbag arranged so as to surround the waist of the protected person, air is used. 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 worn airbag device worn by a person to be protected.

The present invention solves the above-mentioned problems, and an object of the present invention is to provide a worn airbag device that can use a small and lightweight gas generator as a gas generator for inflating an airbag.

In the worn airbag device according to the present invention, the airbag device is attached to the protected person and is expanded by the expansion gas supplied from the gas generator operated when the protected person falls, so that the protected part of the protected person is covered. A worn airbag device equipped with an airbag configured by arranging an inflatable portion that protects it from a tipping point.
The airbag
Protective expansion that covers the area to be protected and expands with a thickness that can secure a receiving stroke that can protect the area to be protected when it comes into contact with the tipping point. The part is arranged and
By arranging a volume reduction site that reduces the internal volume,
It is characterized by being configured.

In the worn airbag device according to the present invention, if the airbag inflates while being attached to the protected person, the protective inflated portion at the inflated part of the airbag is arranged so as to cover the protected part of the protected person. Then, it comes into contact with the tipping point and protects the protected part from the tipping point while being compressed as a protective receiving stroke. At that time, the airbag is provided with a protective expansion portion that secures a predetermined receiving stroke and expands thickly, but is provided with a volume reduction portion that reduces the volume, and the entire airbag is provided. It is possible to suppress the increase in the volume of the airbag and efficiently increase the protection of the protected portion to inflate the airbag. Therefore, the discharge amount of the expansion gas discharged from the gas generator can be suppressed, and a small and lightweight gas generator can be used as the gas generator used for the worn airbag device.

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

Further, in the wearing airbag device according to the present invention, the protective expansion portion of the airbag is configured as a tubular shape in which a hollow portion penetrating along the inner side surface of the airbag is arranged.
The volume reduction portion may be composed of the hollow portion.

In such a configuration, the protective expansion portion of the airbag at the time of completion of expansion can be thickened by arranging the hollow portion in the thickness dimension from the inner side surface to the outer side surface on the side to be protected. Even if the protected person wearing the wearing airbag device falls and tries to bring the protected part into contact with the fall destination, the protective expansion portion is in a state where the outer surface side immediately comes into contact with the fall destination, and the hollow portion is formed. While crushing, it is compressed so that the outer surface side approaches the inner side surface side, and the protected portion can be protected from the tipping point. At that time, in addition to the compression deformation of the expansion portion itself on the outer peripheral side and the inner peripheral side in the hollow portion of the protective expansion portion, the compression deformation of the expansion portion on the peripheral edge of the hollow portion when the hollow portion is crushed is also added, resulting in an impact. By increasing the amount of energy absorbed, the protective expansion part has good cushioning properties and can protect the protected part from the tipping point. That is, in such a configuration, the thickness dimension of the receiving stroke that can receive the protected portion with good cushioning property is increased by interposing the hollow portion from the inner side surface side to the outer side surface side of the protective expansion portion. , Can be secured for a long time. And, of course, since the airbag having the above configuration has a hollow portion that does not allow the expansion gas to flow in, the airbag can be configured while suppressing the increase in volume.

Further, in the worn airbag device according to the present invention, the airbag is provided with a protruding portion protruding outward on the outer surface when expansion is completed.
The protective expansion portion is disposed at a portion provided with the protrusion.
The circumference of the protrusion may form the volume reduction portion.

In such a configuration, the protective inflatable portion of the airbag at the time of completion of expansion can be thickened by disposing the protruding portion in the thickness dimension from the inner side surface to the outer side surface on the side to be protected. Even if the protected person wearing the wearing airbag device falls and tries to bring the protected part into contact with the fall destination, the protective expansion portion provided with a protruding portion to increase the thickness dimension comes into contact with the fall destination. While being compressed and deformed, it has good cushioning properties and can prevent interference with the fall destination of the protected part. That is, in such a configuration, the protective expansion portion of the airbag at the time of completion of expansion can secure a long receiving stroke that can receive the protected portion with good cushioning property by the protruding portion. And, of course, the airbag can be arranged with a volume reduction portion in the form of a non-protruding portion that is relatively recessed with the protruding portion around the protruding portion forming the protective expansion portion, so that the volume can be increased. It is possible to suppress and dispose of a protective expansion portion provided with a protrusion.

In this case, the airbag is formed in a bag shape by connecting the outer peripheral edges of the inner panel arranged on the inner side surface and the outer panel arranged on the outer surface when the expansion is completed. As,
The outer panel
It is formed from a plurality of divided panels along the outer surface of the airbag and is formed from a plurality of divided panels.
It is configured to include a centrally divided panel of a region forming the protrusion and laterally divided panels adjacent to both sides of the centrally divided panel.
The joint edges of the central split panel and the lateral split panel, both of which are interconnected, are configured by disposing a mountain-shaped protrusion in the region of the protrusion.
The protrusion may be formed by the protrusion.

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

Further, as a configuration in which a protruding portion is provided to form a protective expansion portion, the airbag is outside the inner panel disposed on the inner side surface when the expansion is completed and the outer panel disposed on the outer surface surface. As a structure formed in a bag shape by connecting the peripheral edges to each other,
The outer panel is formed from a base cloth for an outer panel, and a knob portion for connecting separated portions is arranged on the outer edge side in the region of the protrusion in the base cloth for the outer panel. Being done
The airbag is formed by connecting the outer peripheral edges of the outer panel provided with the knob and the inner panel to each other.
The protrusion may be formed by the knob.

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

Then, in the wearing airbag device according to the present invention, the protective inflatable portion of the airbag is arranged on the left and right sides of the airbag so as to protect the vicinity of the left and right femoral trochantery portions in the waist portion of the protected person. At the same time, the top portions for increasing the thickness dimension may be arranged so as to extend in the left-right direction.

In such a configuration, when the expansion of the airbag is completed, the protective inflatable part that swells thickly can cover and protect the protruding femoral trochantery part in the vicinity of the left and right femurs that are prolonged for treatment if damaged. It is possible to suitably protect the person to be protected in the event of a fall. Further, if the protective expansion portion at the time of completion of expansion is arranged so that the top portion for thickening the thickness dimension is extended in the left-right direction, even if the protected person falls so as to rotate, the protection target person may fall. It is possible to widely cover the vicinity of the rotating left and right femoral trochanters, and preferably protect the vicinity of the left and right femoral trochanters as a protection target site.

It is a schematic front view and a schematic rear view of the wearing airbag device of 1st Embodiment which concerns on this invention. It is a schematic rear view at the time of expansion in the state which the airbag used for the wearing airbag apparatus of 1st Embodiment is expanded flat. It is a schematic sectional view of the airbag of 1st Embodiment, and corresponds to the part III-III of FIG. It is a schematic sectional view of the airbag of 1st Embodiment, and corresponds to the IV-IV part of FIG. It is a developed view which shows the constituent material of the airbag of 1st Embodiment. It is a schematic vertical sectional view at the time of operation of the wearing airbag device of 1st Embodiment. It is a figure explaining the state at the time of a fall of the protection target person wearing the wearing airbag device of 1st Embodiment. It is a figure explaining the behavior of the protection expansion part at the time of operation of the wearing airbag device of 1st Embodiment. It is the schematic front view and the schematic rear view of the wearing airbag device of 2nd Embodiment. It is a schematic rear view at the time of expansion in the state which the airbag used for the wearing airbag apparatus of 2nd Embodiment is expanded flat. It is a schematic sectional view of the airbag of 2nd Embodiment, and corresponds to the XI-XI part of FIG. It is a developed view which shows the constituent material of the airbag of 2nd Embodiment. It is a schematic vertical sectional view at the time of operation of the wearing airbag device of 2nd Embodiment. It is the schematic front view and the schematic rear view of the wearing airbag device of 3rd Embodiment. It is a schematic rear view at the time of expansion in the state which the airbag used for the wearing airbag apparatus of 3rd Embodiment is expanded flat. It is a schematic sectional view of the airbag of 3rd Embodiment, and corresponds to the XVI-XVI part of FIG. It is a developed view which shows the constituent material of the airbag of 3rd Embodiment. It is a schematic vertical sectional view at the time of operation of the wearing airbag device of 3rd Embodiment. It is a figure explaining the deformation example of the attachment member which attaches an airbag to a person to be protected. It is a figure explaining another modification of the mounting member which mounts an airbag to a person to be protected.

Hereinafter, the embodiment of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 6, the wearing airbag device 10 of the first embodiment is for expansion from the gas generator 20 and the gas generator 20. An operation control device 17 having an airbag 30 expanded by the gas G and a sensor unit 18 for detecting a fall of the protected person 1 to operate the gas generator 20, a gas generator 20, an airbag 30, and operation. It is configured to include a vest-type mounting member 11 that holds the control device 17 and is mounted on the protected person 1.

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

The operation control device 17 includes a sensor unit 18 including an angular velocity sensor capable of detecting an angular velocity around three axes of up, down, front, back, left and right, and an acceleration sensor capable of detecting acceleration in three axes of up, down, front, back, left and right. At the same time, when it is detected by the signal from the sensor unit 18 that the protected person 1 is performing an overturning operation different from the normal operation, the gas generator 20 is configured to operate. Specifically, the operation control device 17 provides a determination means capable of determining from various threshold values that the protected person 1 has started a fall operation different from the normal operation by the signal from the sensor unit 18. In preparation, based on the determination of the determination means, it is detected that the protected person 1 has fallen, and the gas generator 20 is operated. Further, the operation control device 17 also has a built-in power supply including a battery (not shown) for operating the sensor unit 18 and outputting the operating signal of the gas generator 20.

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

As shown in FIG. 4, the gas generator 20 has a substantially cylindrical main body portion 20a storing an expansion gas G made of carbon dioxide or the like compressed inside, and a substantially cylindrical main body portion 20a having a small diameter at the tip of the main body portion 20a. 20b is provided with the gas discharge unit 20b of the above, and the gas discharge unit 20b is provided with a discharge port 20c for discharging the expansion gas G. The gas generator 20 inputs an operation signal of the operation control device 17 that has detected the fall of the protected person 1 to operate an initiator (not shown) arranged near the boundary portion between the main body portion 20a and the gas discharge portion 20b. By breaking a burst disk (not shown), the expansion gas G stored in the main body portion 20a is discharged from the discharge port 20c of the gas discharge portion 20b.

The air bag 30 covers the vicinity of the left and right femoral trochanteric portions 3 (L, R) in the lumbar region 2 as the protected target portion 5 of the protected subject 1, and is viewed from the ground contact surface of the tipping destination 8 (see FIG. 7). A substantially rectangular body expansion portion that covers the side surface of the lumbar region 2 including the vicinity of the left and right femoral trochanteric portions 3 (L, R) as an expansion portion 37 that inflows and expands the expansion gas G for protection. It is configured to include 39 (L, R) and a communication expansion portion 38 that communicates with each other at the upper ends of the left and right main body expansion portions 39 (L, R).

The main body expansion portion 39 (L, R) is provided with a protective expansion portion 40 (L, R) that covers and protects the outside of the left and right femoral trochanter portions 3 (L, R) on the lower side thereof. An upper edge side expansion portion 47 communicating with the communication expansion portion 38 is arranged on the upper side.

An inflow port 34 through which the expansion gas G flows is opened in the communication expansion portion 38, and a curved cylinder-shaped connection port portion connected to the gas discharge portion 20b side of the gas generator 20 is provided at the peripheral edge of the inflow port 34. 35 is arranged. The gas discharge portion 20b is inserted into the connection port portion 35, the clamp 21 is fastened, and the gas discharge portion 20b is connected to the connection port portion 35.

The airbag 30 has a plurality of mounting tabs 30a attached to the upper edge 37a of the expansion portion 37, and these mounting tabs 30a are attached to the inner side surface side of the mounting member 11 by sewing or the like for mounting. It is held by the member 11. Further, the airbag 30 is folded and held by the mounting member 11 so that the lower edge 39b side of the main body expansion portion 39 approaches the upper edge 39a side in the state before the operation of the wearing airbag device 10. To.

Then, when the expansion is completed, the airbag 30 sets the thickness dimension T from the inner side surface 32 on the protected person 1 side to the outer side surface 33 on the edge side of the communication expansion portion 38 of the expansion portion 37 and the upper edge side of the main body expansion portion 39. A volume reduction portion that reduces the internal volume of the airbag 30 inside the protective expansion portion 40 (L, R) while being configured to make the protection expansion portion 40 (L, R) thickest than the expansion portion 47. It is configured by arranging 50.

In the airbag 30 of the first embodiment, the protective expansion portion 40 (L, R) is in the left-right direction (of the waist portion 2) along the inner side surface 32 of the airbag 30 and along the upper edge 37a of the expansion portion 37. It is configured as a tubular loop-shaped expanding portion 41 in which a hollow portion 51 penetrating along the circumferential direction and also in the front-rear direction when worn by the protected person 1) is arranged. Then, in the first embodiment, the hollow portion 51 constitutes the volume reduction portion 50. Further, in the protective expansion portion 40 (L, R) of the airbag 30, the portion of the top portion 45 for thickening the thickness dimension T from the inner side surface 32 to the outer surface 33 of the airbag 30 is the upper and lower portions of the protective expansion portion 40. It is arranged so as to extend in the left-right direction near the center of the direction.

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

As the airbag base cloth 60 constituting the airbag 30 of the first embodiment, as shown in FIG. 5, the inner panel 61 forming the inner side surface 32 side of the outer peripheral wall 31 of the airbag 30 and the outer peripheral wall 31 The outer panel 62 forming the outer side surface 33 side of the above, the outer surface panels 63, 63 forming the outer side surfaces of the left and right main body expansion portions 39 (L, R), and the left and right main body expansion portions 39 (L, R). It is composed of inner side surface panels 64, 64 forming the inner side surface of the hollow portion 51, and peripheral wall panels 65, 65 forming 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 to each other, and a connection port portion is further connected to the peripheral edge of the inflow port 34 provided in the outer panel 62. By combining 35, the airbag 30 can be formed.

Then, when manufacturing the worn airbag device 10, the attachment tab 30a is attached to the airbag 30, and the gas generator 20 is attached to the connection port 35 of the airbag 30 by using the clamp 21. The lower edge 39b side of the bag 30 is folded so as to approach the upper edge 39a side, and the airbag 30 is attached to the mounting member 11 by using the mounting tab 30a, and the operation is previously attached to the mounting member 11. By connecting a lead wire (not shown) for inputting an operation signal from the control device 17 to the gas generator 20, a worn airbag device 10 in which the mounting member 11 holds the airbag 30, the gas generator 20, and the like is manufactured. be able to.

In the wearing airbag device 10 of the first embodiment, the attachment member 11 is attached to the upper body 1a of the protection target person 1 by using the fastener 16, and then, as shown in FIG. 7, the protection target person 1 falls over. Then, the operation control device 17 that has input the signal from the sensor unit 18 operates the gas generator 20, and the expansion gas G is discharged from the discharge port 20c of the gas discharge unit 20b of the gas generator 20. , The airbag 30 will inflate (see FIGS. 6 and 7).

Then, if the air bag 30 is inflated while being attached to the protected person 1, the protective inflated portion 40 (L, R) in the inflated portion 37 of the air bag 30 serves as the protected target portion 5 of the protected person 1. It is arranged so as to cover the femoral trochantery portion 3 (L, R), and as shown in FIGS. 8C, it contacts the tipping point 8 and protects the femoral trochanteric portion 3 (L, R). The femoral trochanteric portion 3 (L, R) is protected from the tipping point 8 while being compressed as a possible receiving stroke SL. At that time, the airbag 30 is provided with a protective expansion portion 40 (L, R) that secures a predetermined receiving stroke SL and expands thickly, but serves as a volume reduction portion 50 that reduces the volume. By disposing the hollow portion 51, it is possible to suppress an increase in the total volume of the airbag 30 and efficiently increase the protection of the protected portion 5 to inflate the airbag 30. .. Therefore, the discharge amount of the expansion gas G discharged from the gas generator 20 can be suppressed, and a small and lightweight gas generator 20 used for the worn airbag device 10 can be used.

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

Then, in the wearing airbag device 10 of the first embodiment, the hollow portion 51 through which the protective expansion portion 40 (L, R) of the airbag 30 penetrates along the inner side surface 32 of the airbag 30 is arranged. It is configured as a tubular shape, and the volume reduction portion 50 is composed of a hollow portion 51.

Therefore, in the first embodiment, the protective expansion portion 40 (L, R) of the airbag 30 at the time of completion of expansion has a hollow portion having a thickness dimension T from the inner surface 32 to the outer surface 33 on the protection target side 1. The 51 can be arranged and thickened, and the protected person 1 wearing the wearing airbag device 10 falls down (see FIG. 7), and the femoral trochantery portion 3 (L) as the protected target portion 5 , R), even if an attempt is made to bring the fall destination 8 into contact with the fall destination 8, the protective expansion portion 40 (L, R) is in a state where the outer surface 33 side immediately comes into contact with the fall destination 8 as shown in A of FIG. Then, as shown in B and C of FIG. 8, while crushing the hollow portion 51, the outer surface 33 side is compressed so as to approach the inner surface 32 side, and the femoral trochanter portion 3 as the protection target site 5 (L, R) can be protected from the fall destination 8. At that time, in addition to the compression deformation of the expansion portion itself of the outer layer portion 41d on the outer peripheral side and the inner layer portion 41c on the inner peripheral side in the hollow portion 51 of the loop-shaped expansion portion 41 as the protective expansion portion 40 (L, R), the hollow portion is hollow. The protective expansion portion 40 (the protective expansion portion 40 ( L, R) has good cushioning property and can protect the protected portion 5 from the tipping point 8. That is, in such a configuration, the receiving stroke SL capable of receiving the protected portion 5 with good cushioning property is provided with the hollow portion 51 from the inner side surface 32 side to the outer side surface 33 side of the protective expansion portion 40 (L, R). Since the intervening thickness dimension T becomes large, it can be secured for a long time. And, of course, since the airbag 30 has a hollow portion 51 that does not allow the expansion gas G to flow in, the airbag 30 can be configured while suppressing an increase in volume.

Further, in the first embodiment, the protective expansion portion 40 (L, R) of the airbag 30 protects the vicinity of the left and right femoral trochanteric portions 3 (L, R) in the waist portion 2 of the protected person 1. The tops 45, which are arranged on the left and right sides of the airbag 30 and increase the thickness dimension T, are arranged so as to extend in the left-right direction, respectively.

Therefore, in the first embodiment, when the expansion of the airbag 30 is completed, the protective inflatable portion 40 (L, R) that inflates thickly becomes a protruding femoral trochanteric portion in the vicinity of the left and right femurs for protracted treatment or the like if damaged. Since the vicinity of 3 (L, R) can be covered and protected, it is possible to suitably protect the person to be protected 1 in the event of a fall. Further, if the protective expansion portion 40 (L, R) at the time of completion of expansion is arranged so as to extend the top portion 45 for thickening the thickness dimension T in the left-right direction, the protection target person 1 rotates. Even if it falls over, it can cover a wide area around the rotating left and right femoral trochanters 3 (L, R), and preferably the left and right femoral trochanters 3 (L, R) as the protection target site 5. ) Can protect the area.

Of course, if the above points are not taken into consideration, the hollow portion 50 may be penetrated in the vertical direction along the inner side surface 32, and the top portion 45 may be arranged along the vertical direction.

Further, as the protection target portion 5 of the protection target person 1, a protection expansion portion 40 composed of a loop-shaped expansion portion 41 may be configured so as to protect the head of the protection target person 1.

Next, the wearing airbag device 10A of the second embodiment shown in FIGS. 9 to 13 will be described. In the wearing airbag device 10A of the second embodiment, the airbag 30 of the first embodiment is the protective expansion portion 40 ( As L, R), the loop-shaped expansion portion 41 is provided, whereas in the airbag 30A of the second embodiment, the protrusion 43 is provided to form the protection expansion portion 40A (L, R). The point is different. The mounting member 11, the operation control device 17 having the sensor unit 18, and the gas generator 20 are the same as those used in the first embodiment.

As shown in FIGS. 9 to 13, the airbag 30A of the second embodiment has a portion in which a protruding portion 43 projecting outward is disposed on the outer surface 33 when expansion is completed, and the portion provided with the protruding portion 43 is provided. , Consists of the protective expansion portion 40A (L, R). The upper and lower sides around the protruding portion 43 form a non-protruding portion 52 as the volume reduction portion 50A.

Similar to the airbag 30 of the first embodiment, the airbag 30A of the second embodiment is located near the left and right femoral trochanteric portions 3 (L, R) in the lumbar region 2 as the protected target portion 5 of the protected subject 1. As an expansion site 37 in which the expansion gas G flows in and expands, the vicinity of the left and right femoral trochanteric portions 3 (L, R) is used to protect the ground surface of the tipping point 8 (see FIG. 7). A substantially rectangular main body expansion portion 39 (L, R) that covers the side surface of the waist portion 2 including the above, and a communication expansion portion 38 that communicates with each other at the upper ends of the left and right main body expansion portions 39 (L, R). It is composed of.

The main body expansion portion 39 (L, R) is protected by providing a protrusion 43 on the lower side so as to cover and protect the outside of the left and right femoral trochanter portions 3 (L, R). An expansion portion 40A (L, R) is arranged, and on both upper and lower sides thereof, an upper edge side expansion portion 47 and a lower edge side expansion portion 48 having a thickness smaller than that of the protective expansion portion 40A (L, R) at the time of expansion are provided. Are arranged. The upper edge side expansion portion 47 and the lower edge side expansion portion 48 are shaped so as to be relatively recessed from the protrusion portion 43 to form a non-projection portion 52, and further, unlike the protrusion portion 43, Since the structure does not protect the protected portion 5, it is not necessary to make the wall thick so that the volume of the airbag 30A can be reduced as much as possible. Therefore, the upper edge side expansion portion 47 and the lower edge side expansion portion 48 form a non-protruding portion 52 as the volume reduction portion 50A.

Similar to the first embodiment, the communication expansion portion 38 is opened with an inflow port 34 through which the expansion gas G flows, and the peripheral edge of the inflow port 34 is connected to the gas discharge portion 20b side of the gas generator 20. A curved cylinder-shaped connection port 35 is provided. The gas discharge portion 20b is inserted into the connection port portion 35, the clamp 21 is fastened, and the gas discharge portion 20b is connected to the connection port portion 35.

As in the first embodiment, the airbag 30A has a plurality of mounting tabs 30a arranged on the upper edge 37a of the expansion portion 37, and the mounting tabs 30a are sewn to the mounting member 11 by sewing or the like. It is attached to the inner side surface side of the above and is held by the mounting member 11. Further, in the state before the operation of the worn airbag device 10A, the airbag 30A is folded so that the lower edge 39b side of the main body expansion portion 39 approaches the upper edge 39a side, as in the first embodiment. It is held by the mounting member 11.

Then, when the expansion is completed, the airbag 30A sets the thickness dimension T from the inner surface 32 on the protected person 1 side to the outer surface 33 on the communication expansion portion 38 of the expansion portion 37 and the upper edge side of the main body expansion portion 39. The protective expansion portion 40A (L, R) is configured to be the thickest than the edge side expansion portion 47 and the lower edge side expansion portion 48. The protective expansion portion 40A is provided with a protrusion 43 protruding from the upper and lower edge side expansion portions 47 and 48 in a substantially trapezoidal shape (substantially quadrangular pyramid trapezoidal shape) to increase the thickness dimension T. The substantially trapezoidal protruding portion 43 is arranged so that the top portion 45 extends in the left-right direction.

As shown in FIG. 12, the airbag base fabric 70 constituting the airbag 30A of the second embodiment is formed of a flexible woven fabric such as polyester and has an outer peripheral wall of the airbag 30A. The inner panel 71 forming the inner side surface 32 side of the 31 and the outer panel 72 forming the outer side surface 33 side of the outer peripheral wall 31 are provided. The outer panel 72 is formed from the divided panels 73, 75, 77 which are 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 a region forming the protrusion 43, and lateral divided panels 75, 77 adjacent to the left and right sides of the central divided panel 73. There is. Then, the connecting edges 74c, 76c, 78c to which the central split panel 73 and the side split panels 75, 77 are mutually coupled are both convex portions 74d, 76d, which project in a mountain shape in the region of the protrusion 43. 78d is arranged and configured.

The central division panel 73 is arranged at the central portion in the left-right direction on the outer surface 33 side of the left and right main body expansion portions 39L, 39R, and the side division panel 75 is the left and right main body expansion portions 39L, 39R. It is arranged on the edge side in the left-right direction on the outer side surface 33 side. The side split panel 77 forms a shared side split panel 77 that forms an edge side of the left and right main body expansion portions 39L, 39R that are close to each other on the outer surface 33 side and the outer surface 33 side of the communication expansion portion 38. It is supposed to be.

Then, in the central division panel 73, the upper and lower connecting edges 74a and 74b on the outer peripheral edge 74 are used as edges for connecting to the inner panel 71, and the lateral connecting edge 74c provided with the left and right convex portions 74d is used as the corresponding lateral dividing panel. The edges are connected to the lateral bonding edges 76c and 78c provided with the convex portions 76d and 78d of the 75 and 77.

The side split panel 75 has the upper and lower connecting edges 76a and 76b on the outer peripheral edge 76 and the lateral connecting edge 76e having no convex portion 76d as an edge to be connected to the inner panel 71, and the lateral side provided with the convex portion 76d. The bonding edge 76c is used as an edge to be bonded to the lateral bonding edge 74c of the central split panel 73.

The side split panel 77 connects the upper and lower connecting edges 78a and 78b on the outer peripheral edge 78 and the inverted U-shaped lower connecting edge 78f including the horizontal edge having no convex portion 76d to the inner panel 71. As an edge, the lateral coupling edge 78c provided with the convex portion 78d is used as an edge to be coupled to the lateral coupling edge 74c of the central division panel 73.

Then, the corresponding lateral connecting edges 74c, 76c, 78c of these central split panels 73 and the lateral split panels 75, 77 are joined to each other by suturing to form the outer panel 72, and the outer panel 72 and the outer panel 72. If the outer peripheral edges 72a and 71a with the inner panel 71 are connected to each other by suturing, the mounting tab 30a is attached, and the connection port 35 is connected to the peripheral edge of the inflow port 34 provided on the outer panel 72, air is provided. The bag 30A can be formed.

Then, when manufacturing the worn airbag device 10A, as in the first embodiment, the gas generator 20 is assembled to the airbag 30A by using the clamp 21, the airbag 30A is folded, and the mounting tab is used. If 30a is used to attach to the mounting member 11 and 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 mounting member 11 can be mounted. It is possible to manufacture a worn airbag device 10A in which a member 11 holds an airbag 30A, a gas generator 20, and the like. Then, the wearing airbag device 10A attaches the mounting member 11 to the upper body 1a of the protection target person 1 by using the fastener 16, and then, when the protection target person 1 falls, a signal from the sensor unit 18 is input. The operation control device 17 that has been operating operates the gas generator 20, and the expansion gas G is discharged from the discharge port 20c of the gas discharge unit 20b of the gas generator 20, and the airbag 30A expands. (See FIGS. 11 and 13).

Then, in the second embodiment, the protective expansion portion 40A (L, R) of the air bag 30A at the time of completion of expansion has a thickness dimension T from the inner surface 32 to the outer surface 33 on the protection target side 1 side, and the protrusion portion. The 43 can be arranged and thickened, and the protected person 1 equipped with the wearing airbag device 10A falls, and the femoral trochanter portion 3 (L, R) as the protected part 5 falls. Even if it is attempted to come into contact with the tip 8, the protective expansion portion 40A (L, R) provided with the protruding portion 43 to increase the thickness dimension T comes into contact with the tip 8 and is compressed and deformed while having good cushioning and femur. It is possible to prevent the bone trochanter portion 3 (L, R) from interfering with the fall destination 8. That is, in such a configuration, the protective expansion portion 40A (L, R) of the airbag 30A at the time of completion of expansion can receive the protection target portion 5 (femoral trochanter portion 3) with good cushioning property by the protruding portion 43. A long receiving stroke SL can be secured. And, of course, the airbag 30A is provided with volume reduction portions 50A in the form of non-projecting portions 52 that are relatively recessed with the projecting portions 43 on both upper and lower sides around the protruding portions 43 forming the protective expansion portion 40A. Therefore, it is possible to suppress the increase in volume and dispose of the protective expansion portion 40A (L, R) provided with the protrusion 43.

In the air bag 30A of the second embodiment, the non-projecting portions 52 constituting the volume reduction portion 50A are arranged on both the upper and lower sides of the projecting portion 43, but the non-projecting portions 52 constituting the volume reduction portion 50A are provided. The protrusion 43 may be arranged so as to be relatively recessed from the protrusion 43, for example, the protrusion 43 may be arranged so as to approach the lower edge 39b side of the main body expansion portion 39. In the case, the non-protruding portion 52 as the volume reduction portion 50A may be formed only by the upper edge side expanding portion 47 on the upper side of the protruding portion 43, or on both the left and right sides of the protruding portion 43, or on one of the left and right sides. , The non-protruding portion 52 constituting the volume reduction portion 50A may be arranged.

Further, in the second embodiment, the airbag 30A is provided between the outer peripheral edges 71a and 72a of the inner panel 71 disposed on the inner surface 32 when the expansion is completed and the outer panel 72 disposed on the outer surface 33. Are combined to form a bag. Then, the outer panel 72 is formed from the divided panels 73, 73, 75, 75, 77 divided into a plurality of (five in the embodiment) along the outer surface 33 of the airbag 30A, and the protruding portion 43 is formed. The central division panel 73 of the area to be formed and the side division panels 75, 77 adjacent to the left and right sides of the central division panel 73 are provided, and the central division panel 73 and the side division panels 75, 77 are mutually configured. The connecting edges 74c, 76c, and 78c to be coupled to the above are both configured by disposing the convex portions 74d, 76d, and 78d protruding in a mountain shape in the region of the protruding portion 43.

Therefore, in the airbag 30A of the second embodiment, the corresponding edges 76c and 78c of the side split panels 75 and 77 on both sides are compared with the edges 74c and 74c on both sides of the central split panel 73 in the outer panel 72 of the airbag 30A. When the above are coupled to each other, when the airbag 30A is inflated, the convex portions 74d, 76d, 78d protruding in a mountain shape form the protruding portion 43, and the upper and lower portions with the convex portions 74d, 76d, 78d in between. The portions (edge side expansion portions) 47 and 48 on both sides can form the volume reduction portion 50A as the non-protruding portion 52. That is, in the second embodiment, the projecting portion 43 of the protective expansion portion 40A and the volume reduction portion 50A adjacent to the projecting portion 43 are simply separated by the divided panels 73, 75, 77 in which the outer panel 72 is divided into predetermined shapes. Can be formed into.

Further, also in the second embodiment, the protective expansion portion 40A (L, R) of the airbag 30A protects the vicinity of the left and right femoral trochanteric portions 3 (L, R) in the lumbar portion 2 of the protected person 1. The airbags 30A are arranged on the left and right sides, and the top portions 45 for increasing the thickness dimension T are arranged so as to extend in the left-right direction.

Therefore, even in the second embodiment, when the expansion of the airbag 30A is completed, the protective inflatable portion 40A (L, R) that inflates thickly becomes a protruding femoral trochanteric portion in the vicinity of the left and right femurs for protracted treatment or the like if damaged. Since the vicinity of 3 (L, R) can be covered and protected, it is possible to suitably protect the person to be protected 1 in the event of a fall. Further, if the protective expansion portion 40A (L, R) at the time of completion of expansion is arranged so as to extend the top portion 45 for thickening the thickness dimension T in the left-right direction, the protection target person 1 rotates. Even if it falls over, it can cover a wide area around the rotating left and right femoral trochanters 3 (L, R), and preferably the left and right femoral trochanters 3 (L, R) as the protection target site 5. ) Can protect the area.

If the above points are not taken into consideration, when the projecting portion 43 is provided to form the protective expansion portion 40A, the top portion 45 may be arranged so as to be arranged along the vertical direction. By the way, the outer panel 72 of the main body expansion portion 39 is divided into three divided panels in the vertical direction, and convex portions as in the second embodiment are formed in the portions adjacent to each other of each divided panel, and each division is performed. If the panels are connected to each other to form the outer panel, the top portion 45 of the protruding portion 43 can be arranged so as to be arranged along the vertical direction.

Further, when the projecting portion 43 is provided to form the protective expansion portion 40A, not only the vicinity of the femoral trochanteric portion 3 (L, R) is set as the protection target portion 5, but also the head of the protection target person 1. The airbag may be configured with the above-mentioned portion to be protected.

Further, as a configuration in which the protruding portion is provided to form the protective expansion portion, the wearing airbag device 10B of the third embodiment shown in FIGS. 14 to 18 may be configured. In the worn airbag device 10B of the third embodiment, the shape of the protruding portion 43B provided on the protective expansion portion 40B (L, R) of the airbag 30B is such that the shape protrudes into a substantially semi-cylindrical shape (substantially triangular columnar shape). This point is different from the shape of the protruding portion 43 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 being used.

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

Similar to the air bag 30A of the second embodiment, the air bag 30B of the third embodiment is located near the left and right femoral trochanteric portions 3 (L, R) in the lumbar region 2 as the protected target portion 5 of the protected subject 1. The left and right femoral trochanters 3 (L, R) are used as expansion sites 37 that inflow the expansion gas G to protect the ground surface of the tipping point 8 (see FIG. 7). A substantially rectangular body expansion portion 39 (L, R) that covers the side surface of the waist portion 2 including the vicinity, and a communication expansion portion 38 that communicates with each other at the upper ends of the left and right body expansion portions 39 (L, R). It is configured in preparation.

The main body expansion portion 39 (L, R) is provided with a protrusion 43B on the lower side so as to cover and protect the outside of the left and right femoral trochanter portions 3 (L, R). An expansion portion 40B (L, R) is arranged, and on both upper and lower sides thereof, an upper edge side expansion portion 47B and a lower edge side expansion portion 48B having a thickness smaller than that of the protective expansion portion 40B (L, R) at the time of expansion are provided. Are arranged. The upper edge side expansion portion 47B and the lower edge side expansion portion 48B have a shape that is relatively concave with the protrusion portion 43B to form a non-projection portion 52B, and further, unlike the protrusion portion 43B. Since the structure does not protect the protected portion 5, it is not necessary to make the wall thick so that the volume of the airbag 30B can be reduced as much as possible. Therefore, the upper edge side expansion portion 47B and the lower edge side expansion portion 48B form a non-protruding portion 52B as the volume reduction portion 50B.

Similar to the second embodiment, the communication expansion portion 38 is opened with an inflow port 34 through which the expansion gas G flows, and the peripheral edge of the inflow port 34 is connected to the gas discharge portion 20b side of the gas generator 20. A curved cylinder-shaped connection port 35 is provided. The gas discharge portion 20b is inserted into the connection port portion 35, the clamp 21 is fastened, and the gas discharge portion 20b is connected to the connection port portion 35.

As in the second embodiment, the airbag 30B has a plurality of mounting tabs 30a arranged on the upper edge 37a of the expansion portion 37, and the mounting tabs 30a are sewn to the mounting member 11 by sewing or the like. It is attached to the inner side surface side of the above and is held by the mounting member 11. Further, in the state before the operation of the worn airbag device 10B, the airbag 30B is folded so that the lower edge 39b side of the main body expansion portion 39 approaches the upper edge 39a side, as in the second embodiment. It is held by the mounting member 11.

Then, when the expansion is completed, the airbag 30B sets the thickness dimension T from the inner surface 32 on the protected person 1 side to the outer surface 33 on the communication expansion portion 38 of the expansion portion 37 and the upper edge side of the main body expansion portion 39. The protective expansion portion 40B (L, R) is configured to be the thickest than the edge side expansion portion 47B and the lower edge side expansion portion 48B. The protective expansion portion 40B is provided with a protrusion 43B projecting from the upper and lower edge side expansion portions 47B and 48B in a substantially semi-cylindrical shape (substantially triangular columnar shape) to increase the thickness dimension T. The substantially semi-cylindrical protrusion 43B is arranged so that its top 45 extends in the left-right direction.

As shown in FIG. 17, the airbag base fabric 80 constituting the airbag 30B of the third embodiment is formed of a flexible woven fabric such as polyester, and has an inner surface 32 when expansion is completed. The airbag 30B is composed of an inner panel 81 arranged on the inner panel 81 and an outer panel 82 arranged on the outer surface 33, and the airbag 30B is sewn between the outer peripheral edges 81a and 82a of the inner panel 81 and the outer panel 82. It is configured to be combined to form a bag shape.

Further, the outer panel 82 is formed from the outer panel base cloth 83, and is an outer edge in the region of the protrusion 43B in the outer panel base cloth 83 (in the third embodiment, it is an end edge on the left-right direction side and is in the vertical direction). Edges along the edges) 83a, 83a are provided with triangular notches 84, and linear parts (separated edges) 84a, 84b that are separated vertically and extend substantially in the left-right direction are connected to each other by stitching. It is configured by disposing the portion 85.

Then, the airbag 30B connects the outer peripheral edges 82a and 81a of the outer panel 82 provided with the knobs 85 and 85 and the inner peripheral panels 81 with sutures, and at the peripheral edge of the inflow port 34 provided on the outer panel 82. It can be formed by connecting the connection port 35.

Then, in the wearing airbag device 10B, as in the second embodiment, the gas generator 20 is assembled to the airbag 30B, the airbag 30A is folded, and the airbag 30A is attached to the mounting member 11 by 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, the gas generator 20, and the like can be attached to the mounting member 11. The held airbag device 10B can be manufactured. Then, the wearing airbag device 10B attaches the mounting member 11 to the upper body 1a of the protection target person 1 by using the fastener 16, and then, when the protection target person 1 falls, a signal from the sensor unit 18 is input. The operation control device 17 that has been operating operates the gas generator 20, and the expansion gas G is discharged from the discharge port 20c of the gas discharge unit 20b of the gas generator 20, and the airbag 30B expands. (See FIGS. 16 and 18).

Further, also in the third embodiment, the protective expansion portion 40B (L, R) of the airbag 30B at the time of completion of expansion has a thickness dimension T from the inner surface 32 to the outer surface 33 on the protection target side 1 side, and the protrusion portion. The 43B can be arranged and thickened, and the protected person 1 wearing the wearing airbag device 10B falls, and the femoral trochanter portion 3 (L, R) as the protected part 5 falls. Even if it is attempted to come into contact with the tip 8, the protective expansion portion 40B (L, R) having the protrusion 43B to increase the thickness dimension T is protected by the protrusion 43B, and the protection target portion 5 (femoral trochanter portion 3). Can be protected by securing a long receiving stroke SL that can be received with good cushioning. Of course, the airbag 30B is provided with volume reduction portions 50B on both upper and lower sides of the projecting portion 43B forming the protective expansion portion 40B in the form of a non-projecting portion 52B that is relatively recessed with the projecting portion 43B. Therefore, it is possible to dispose the protective expansion portion 40B (L, R) provided with the protrusion 43B while suppressing the increase in volume.

Even in the air bag 30B of the third embodiment, the non-projecting portions 52B constituting the volume reduction portion 50B are arranged on both the upper and lower sides of the projecting portion 43B, but the non-projecting portions 52B constituting the volume reduction portion 50B are not included. It may be arranged so as to be relatively recessed with the protrusion 43B at any of the periphery of the protrusion 43B. For example, the protrusion 43B may be arranged so as to approach the lower edge 39b side of the main body expansion portion 39. In the case, the non-protruding portion 52B as the volume reduction portion 50B may be formed only by the upper upper edge side expanding portion 47B of the protruding portion 43B, or on both the left and right sides of the protruding portion 43B, or on one of the left and right sides. , The non-protruding portion 52B constituting the volume reduction portion 50B may be arranged.

Further, in the third embodiment, the airbag 30B has the outer peripheral edges 81a and 82a of the inner panel 81 disposed on the inner surface 32 when the expansion is completed and the outer panel 82 disposed on the outer surface 33. The outer panel 82 is formed from the outer panel base cloth 83 and is formed on the outer edge 83a side in the region of the protrusion 43B of the outer panel base cloth 83 so as to be formed in a bag shape by connecting the outer panel 82 with sutures. , 84a, 84b separated parts (separated edges) 84a, 84b are configured by arranging a knob portion 85 which is connected to each other by suturing. Then, the airbag 30B is formed by connecting the outer peripheral edges 82a and 81a of the outer panel 82 provided with the grip portion 85 and the inner peripheral panels 81 to each other, and the protruding portion 43B is formed by the grip portion 85. There is.

Therefore, in the third embodiment, when the airbag 30B is inflated, the portion provided with the grip portion 85 forms a protruding portion 43B protruding in a mountain shape. Specifically, a substantially semi-conical shape composed of the grip portion 85. The portions 47B and 48B on both the upper and lower sides around the protrusion 43b away from the knob 85 are formed as the non-projection 52B. As a result, the volume reduction portion 50B can be formed. That is, even in the third embodiment, the protruding portion 43B of the protective expansion portion 40B (L, R) and the volume reduction portions 50B and 50B adjacent to the protruding portion 43B can be provided by simply providing the knob portion 85 on the outer panel 82. It can be easily formed.

Further, also in the third embodiment, the protective expansion portion 40B (L, R) of the airbag 30B protects the vicinity of the left and right femoral trochanteric portions 3 (L, R) in the lumbar portion 2 of the protected person 1. The airbags 30B are arranged on the left and right sides, and the top portions 45 for increasing the thickness dimension T are arranged so as to extend in the left-right direction.

Therefore, even in the third embodiment, when the expansion of the airbag 30B is completed, the protective inflatable portion 40B (L, R) that inflates thickly becomes a protruding femoral trochanteric portion in the vicinity of the left and right femurs for protracted treatment or the like if damaged. Since the vicinity of 3 (L, R) can be covered and protected, it is possible to suitably protect the person to be protected 1 in the event of a fall. Further, if the protective expansion portion 40B (L, R) at the time of completion of expansion is arranged so as to extend the top portion 45 for thickening the thickness dimension T in the left-right direction, the protection target person 1 rotates. Even if it falls over, it can cover a wide area around the rotating left and right femoral trochanters 3 (L, R), and preferably the left and right femoral trochanters 3 (L, R) as the protection target site 5. ) Can protect the area.

Of course, if the above points are not taken into consideration, even in the third embodiment, when the projecting portion 43B is provided to form the protective expansion portion 40A, the top portion 45 is arranged so as to be arranged along the vertical direction. May be good. By the way, the upper edge 39a and the lower edge 39b of the main body expansion portion 39 of the air bag 30B are set as outer edges (the end edges on the vertical direction side, which are the horizontal edges along the left and right directions), and the outer edge portion of the outer panel 82 thereof. If the knob portion 85 is formed, the top portion 45 of the protruding portion 43B can be arranged so as to be arranged along the vertical direction.

Further, when the projecting portion 43B is provided to form the protective expansion portion 40B, not only the vicinity of the femoral trochanteric portion 3 (L, R) is set as the protection target portion 5, but also the head of the protection target person 1. The airbag may be configured with the above-mentioned portion to be protected.

Further, in each embodiment and the like, the vest is exemplified as the mounting member 11 for holding the airbag 30 and the like, but a jacket having a sleeve portion may be used, and further, as shown in FIG. 19, the airbag 30 is stored. The mounting member 11A may be configured from the outer cover that covers the airbag 30. The mounting member 11A is provided with a fastener 16A such as a hook-and-loop fastener capable of fastening the left and right terminals to each other, and the mounting member 11A to which the airbag 30 and the gas generator 20 are attached is placed near the waist 2 of the protected person 1. By winding and fastening the fastener 16A, the wearing airbag device 10 can be attached to the protected person 1.

Further, as shown in FIG. 20, the mounting member 11B may be configured from a belt in which fasteners 16B made of clip materials that can be coupled to each other are arranged at both ends. The mounting member 11B covers the belt main body 11a in which the fasteners 16B are arranged at both ends, and the upper edge 37a including the vicinity of the communication expansion portion 38 of the airbag 30, and the cover portion 11b to which the upper edge 37a side is attached. It is composed of a plurality of belt loops 11c attached to the back surface side of the cover portion 11b so that the belt main body 11a can be inserted. In this mounting member 11B, with the airbag 30 to which the gas generator 20 and the like are attached, the airbag device 10 is protected by winding it around the waist 2 of the person to be protected 1 and fastening the fastener 16B. It can be attached to the subject 1.

1 ... protected person, 2 ... waist, 3 (L, R) ... femoral trochanter, 5 ... protected part, 8 ... fall destination, 10,10A, 10B ... worn airbag device, 20 ... gas generator , 30, 30A, 30B ... Airbag, 31 ... Outer wall, 32 ... Inner surface, 33 ... Outer surface, 37 ... Expansion site, 40 (L, R), 40A (L, R), 40B (L, R) ... protective expansion part, 43, 43B ... protrusion, 45 ... top, 50, 50A, 50B ... volume reduction part, 51 ... hollow part,
71 ... inner panel, 71a ... outer peripheral edge, 72 ... outer panel, 72a ... outer peripheral edge, 73 ... central split panel, 74d ... convex part, 75 ... side split panel, 76d ... convex part, 77 ... (shared) lateral Split panel, 78d ... convex part,
81 ... inner panel, 81a ... outer peripheral edge, 82 ... outer panel, 82a ... outer peripheral edge, 83 ... outer panel base cloth, 84a ... (top) separation edge, 84b ... (bottom) separation edge, 85 ... knob,
SL ... Receiving stroke, T ... Thickness dimension, G ... Expansion gas.

Claims (6)

An expansion part is provided that is attached to the protected person and expands by the expansion gas supplied from the gas generator that is activated when the protected person falls, and protects the protected part of the protected person from the fall destination. It is a wearable airbag device equipped with an airbag, which is configured to be configured.
The airbag
Protective expansion that covers the area to be protected and expands with a thickness that can secure a receiving stroke that can protect the area to be protected when it comes into contact with the tipping point. The part is arranged and
By arranging a volume reduction site that reduces the internal volume,
A worn airbag device characterized by being configured. The protective expansion portion of the airbag is configured as a tubular shape in which a hollow portion penetrating along the inner side surface of the airbag is arranged.
The worn airbag device according to claim 1, wherein the volume reduction portion is composed of the hollow portion. The airbag is provided with an outwardly projecting protrusion on the outer surface when expansion is completed.
The protective expansion portion is disposed at a portion provided with the protrusion.
The worn airbag device according to claim 1, wherein the periphery of the protrusion constitutes the volume reduction portion. The airbag is formed in a bag shape by connecting the outer peripheral edges of the inner panel disposed on the inner side surface and the outer panel disposed on the outer surface when expansion is completed.
The outer panel
It is formed from a plurality of divided panels along the outer surface of the airbag and is formed from a plurality of divided panels.
It is configured to include a centrally divided panel of a region forming the protrusion and laterally divided panels adjacent to both sides of the centrally divided panel.
The joint edges of the central split panel and the lateral split panel, both of which are interconnected, are configured by disposing a mountain-shaped protrusion in the region of the protrusion.
The worn airbag device according to claim 3, wherein the protruding portion is formed by the convex portion. The airbag is formed in a bag shape by connecting the outer peripheral edges of the inner panel disposed on the inner side surface and the outer panel disposed on the outer surface when expansion is completed.
The outer panel is formed from a base cloth for an outer panel, and a knob portion for connecting separated portions is arranged on the outer edge side in the region of the protrusion in the base cloth for the outer panel. Being done
The airbag is formed by connecting the outer peripheral edges of the outer panel provided with the knob and the inner panel to each other.
The worn airbag device according to claim 3, wherein the protruding portion is formed by the knob portion. The protective inflatable portion of the airbag is arranged on the left and right sides of the airbag so as to protect the vicinity of the left and right femoral trochanters in the lumbar region of the protected person, and the apex portion for increasing the thickness dimension. The worn airbag device according to any one of claims 1 to 5, wherein each of the airbags is arranged so as to extend in the left-right direction.

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