JP2022057419A - Wearing airbag device - Google Patents

Abstract

To provide a wearing airbag device capable of stably protecting a lumbar part of a wearer.SOLUTION: A wearing airbag device S which is constituted so as to protect a lumbar part MW of a wearer M includes an airbag 10 constituted so as to be worn on the wearer around a pelvis MP, and inflating so as to cover the outside of a protection object portion comprising left and right thighbone trochanter parts TP of the wearer. The airbag has a substantially plate-like inflation completion shape formed by joining mutually circumferences of an inner wall part 10a arranged at a wearer side and an outer wall part 10b arranged at an outer side, and has wearing side portions 15 positioned at an upstream side of the flow of inflation gas and arranged at lateral sides of the pelvis in inflation completion, and protection body parts 16 arranged so as to extend downward from the wearing side portions in inflation completion, and covering the outside of the protection object portion. The airbag can suppress the protection body parts from floating from the wearer in inflation completion by floating suppression means.SELECTED DRAWING: Figure 7

Description

The present invention relates to a worn airbag device configured to be capable of protecting the wearer's waist.

Conventionally, as a wearing airbag device configured to be able to protect the waist of a wearer (for example, an elderly person) in the event of a fall or the like, it is mounted so as to be wrapped around the waist and protrudes downward during operation. Some have a structure in which the waist is covered with an inflated airbag (see, for example, Patent Document 1).

International Publication No. 2019/207474

Normally, when an airbag is expanded by inflowing an expansion gas into the airbag, the airbag expands thickly while curving the outer peripheral surface. Therefore, when the airbag is inflated so that it protrudes downward from the state of being wrapped around the waist like a conventional worn airbag device, the inflated airbag floats away from the waist. There was a risk that the waist could not be covered quickly and accurately in the event of a fall or the like.

The present invention solves the above-mentioned problems, and an object of the present invention is to provide a wearing airbag device capable of stably protecting the waist of a wearer.

The wearing airbag device according to the present invention is a wearing airbag device configured to be able to protect the waist of the wearer.
It is configured to be worn by the wearer around the pelvis, and can be expanded so as to inflow the expansion gas into the inside and cover the outside of the protected part consisting of the left and right femoral trochanters of the wearer. Equipped with an airbag
The airbag is configured as a substantially plate-like shape in which the inflatable completed shape is formed by connecting the peripheral edges of the inner side wall portion arranged on the wearer side and the outer wall portion arranged on the outer side to each other.
The mounting side part, which is located on the upstream side of the flow of expansion gas and is placed on the side of the pelvis when expansion is completed,
A protective main body that is arranged so as to extend downward from the mounting side when expansion is completed and covers the outside of the protected part,
Is configured to have
It is characterized in that it is configured to be able to suppress the lifting of the protective main body from the wearer when the expansion is completed by the lifting suppressing means.

In the wearing air bag device of the present invention, in the air bag, when the expansion is completed, the protective main body portion that covers the outside of the protected target portion including the femoral trochanter portion is downward from the wearing side portion arranged on the side of the pelvis. Even if the protective main body is arranged so as to extend, the protective main body is in a state where the lifting from the waist is suppressed by the lifting suppressing means, that is, in a state close to the protection target site (femoral trochanteric portion). So, it will be placed. Therefore, the protection main body portion can quickly and accurately cover the outside of the protection target portion (femoral trochanter portion).

Therefore, the wearing airbag device of the present invention can stably protect the waist of the wearer.

Specifically, a tether as a floating suppressing means is arranged in the airbag so as to connect the inner side wall portion and the outer wall portion in the vicinity of the boundary portion between the mounting side portion and the protection main body portion.
With the airbag unfolded flat, the tether should be positioned so that the inner binding site that connects one end edge to the inner wall is above the outer binding site that connects the other edge to the outer wall. It is preferable that the structure is arranged in the airbag.

If the worn airbag device has the above configuration, the airbag is excessive by disposing a tether that connects the inner side wall portion and the outer wall portion in the vicinity of the boundary portion between the mounting side portion and the protective main body portion. This tether also positions the inner binding site that binds one edge to the inner wall above the outer binding site that binds the other edge to the outer wall. In other words, the tether is arranged so that the film length of the inner side wall portion constituting the mounting side portion is shorter than the film length of the outer wall portion, starting from the upper end. Therefore, when the expansion of the airbag is completed, the protective main body can be arranged so that the lower end side faces the wearer side (inside) and the airbag is bent from the inner binding site as a starting point to protect the airbag. The lifting of the main body from the waist can be accurately suppressed, and the protective main body can accurately cover the outside of the protection target site (femoral trochanteric portion).

Further, as a means for suppressing lifting, a knob portion is formed in the region of the inner side wall portion so as to shorten the film length on the vertical side of the inner side wall portion as compared with the outer wall portion.
The knob portion may be arranged in the area of the mounting side portion.

If the worn airbag device has such a configuration, by providing a knob portion on the inner side wall portion side, the film length on the vertical side of the inner side wall portion from the mounting side portion to the protection main body portion can be adjusted to the outer wall portion. It can be made shorter than the film length on the vertical side of the above, and the inner side wall can be arranged so as to bend with the knob as the starting point, and the lower end side (lower end side of the protective body) when expansion is completed. Can be turned toward the wearer side (inside). Further, since this knob portion is configured to be arranged in the area of the mounting side portion, the protective main body portion may be attached to the wearer over substantially the entire upper and lower parts so as to start from the knob portion arranged above. It can be arranged close to the side, and it is possible to accurately prevent the protection main body from being separated from the protection target site. The outside can be covered accurately.

Furthermore, as a means of suppressing floating,
A partition wall that can circulate the expansion gas and that separates the mounting side portion and the protective main body portion is arranged in the airbag.
The protective main body portion may be configured so that the expansion completed shape is thinner than the mounting side portion.

If the worn airbag device has such a configuration, at the initial stage of expansion of the airbag, the mounting side portion first inflows the expansion gas into the inside to expand, and then the protective main body portion is used for expansion inside. The gas will flow in and expand, but since the protective main body and the mounting side portion are partitioned by a partition wall through which the expansion gas can flow, the protective main body portion passes through the partition wall and is mounted on the mounting side. The expansion gas will flow downward from the site. Further, the protective main body portion is configured to expand thinner than the mounting side portion. The femoral trochanteric region as a protected area is located on the left and right sides of the pelvis with respect to the horizontal center of the wearer's body. The protective main body that covers the outside of the pelvis is thinner than the mounting side portion located on the side of the pelvis, in other words, the protective main body portion is relative to the mounting side portion. Since it is arranged so as to be recessed, even if it is configured to cover the femoral trochanteric part (protection target part) located on the left and right sides of the pelvis, the femoral trochantery part protrudes from the pelvis. Can be absorbed by the dimensional difference in thickness between the mounting side portion and the protective main body portion, and it is possible to prevent the protective main body portion from being arranged in an expanded state so as to separate the lower end side from the wearer. Therefore, it is possible to accurately suppress the lifting of the protective main body from the wearer. As a result, the protection main body portion can accurately cover the outside of the protection target portion (femoral trochanteric portion).

Furthermore, the worn airbag device may have the following configuration.

A wearing airbag device that can protect the wearer's waist.
It is configured to be worn by the wearer around the pelvis, and can be expanded so as to inflow the expansion gas into the inside and cover the outside of the protected part consisting of the left and right femoral trochanters of the wearer. Airbag and
A gas generator that supplies expansion gas to the airbag,
To prepare
The airbag is configured as a substantially plate-like shape in which the inflatable completed shape is formed by connecting the peripheral edges of the inner side wall portion arranged on the wearer side and the outer wall portion arranged on the outer side to each other. The veranda is the side of the wrapping part that is wrapped around the pelvis, and it is attached to the wearer and has two protective body parts that are arranged so as to cover the outside of the protected part when the expansion is completed, and a gas generator. It is configured to include a gas supply path portion to be connected and two gas flow path sections for communicating the gas supply path section and each protection main body section.
The gas supply path is configured to be located behind the pelvis.
The tip side is protected by extending each gas flow path portion from the gas supply passage portion to the lower side in the left-right direction and inverting it so as to face upward at a position below the protection main body portion. It is characterized by being communicated with the main body.

In the wearing airbag device having such a configuration, in the airbag, the protective main body portion that covers the outside of the femoral trochanter portion as the protection target portion when the expansion is completed is arranged behind the pelvis and the gas supply path portion and the gas. The structure is such that the expansion gas flows into the inside of the protection main body from below via the flow path portion to expand, and in the gas flow path portion, the expansion gas flows away from the center of the wearer. However, since the airbag is wound around the pelvis on the upper edge side, the expansion gas flowing into the protection main body through the gas flow path is reversed and heads toward the center side of the wearer. It will flow like this. Therefore, the fact that the protective main body is arranged away from the wearer can be suppressed by the flow of the expanding gas into the airbag, and the outside of the protected portion can be accurately controlled by the protective main body. Can be covered with.

It is a schematic diagram of the state in which the wearing airbag device which is one Embodiment of this invention is attached to the wearer. It is a top view of the wearing airbag apparatus of an embodiment in a flat unfolded state. It is a schematic vertical sectional view of the wearing airbag device of an embodiment, and corresponds to the part III-III of FIG. It is a top view of the state in which the airbag used in the wearing airbag apparatus of an embodiment is flatly unfolded. FIG. 5 is a schematic view of a state in which the airbag is completed to be inflated in a state of being worn by a wearer in the wearing airbag device of the embodiment. FIG. 3 is a schematic partial cross-sectional view (a schematic cross-sectional view on the left side) of the worn airbag device of the embodiment along the front-rear direction in a state where the airbag has completed expansion. FIG. 3 is a schematic vertical sectional view in a mounted state showing a state in which the airbag has completed expansion in the worn airbag device of the embodiment. It is a partially enlarged plan view which shows the airbag which is another embodiment of this invention. FIG. 8 is a schematic vertical sectional view showing a state in which the airbag of FIG. 8 is inflated in a wearing state. It is a partially enlarged plan view which shows the airbag which is still another embodiment of this invention. It is a schematic vertical sectional view of the airbag of FIG. 10, and corresponds to the XI-XI part of FIG. It is a schematic cross-sectional view of the airbag of FIG. 10, and corresponds to the XII-XII part of FIG. FIG. 10 is a schematic vertical sectional view showing a state in which the airbag of FIG. 10 is inflated in a wearing state. It is a top view which shows the airbag which is still another embodiment of this invention. FIG. 14 is a schematic perspective view showing a state in which the airbag of FIG. 14 is inflated in a wearing state. FIG. 14 is a schematic cross-sectional view showing the flow of expansion gas during expansion and expansion in the airbag of FIG. 14. FIG. 14 is a schematic vertical sectional view showing a state in which the airbag of FIG. 14 is inflated in a wearing state.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings. In the embodiment, as shown in FIG. 1, a wearing airbag device S of a type worn so as to be wrapped around the waist MW of the wearer M (specifically, around the pelvis MP) will be described as an example. In the embodiment, the vertical, front-back, and left-right directions coincide with the up-down, front-back, and left-right directions of the wearer M in a state of being worn by the wearer M, unless otherwise specified.

As shown in FIGS. 1 to 3, the worn airbag device S includes an airbag 10, a gas generator 5 that supplies expansion gas to the airbag 10, and a sensor unit 2 that detects a fall of the wearer M. It is configured to include an operation control device 1 for operating the gas generator 5 and an outer cover portion 25 for covering the outer peripheral side of the airbag 10. In the worn airbag device S of the embodiment, as shown in FIGS. 2 and 3, the airbag 10 is arranged in the outer cover portion 25 in a flatly deployed state.

The operation control device 1 includes a sensor unit 2 having 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 the three axis directions, and also from the sensor unit 2. It is configured to operate the gas generator 5 when it detects a tipping motion different from the normal motion of the wearer M by the signal of. Specifically, when the wearer M has started a fall operation different from the normal operation, the operation control device 1 is provided with a determination means capable of determining from various threshold values, and thus the determination means is determined. The fall of the wearer M is detected based on the above, and the gas generator 5 is operated. The operation control device 1 has a built-in power supply including a battery (not shown) for operating the sensor unit 2 and outputting the operating signal of the gas generator 5.

The airbag 10 is formed of a flexible sheet body, and in the case of the embodiment, it is formed of a woven fabric made of polyester yarn, polyamide yarn, or the like. The airbag 10 is configured to be attached to the wearer M by being wound around the pelvis MP by using the belt-shaped portion 27 described later in the outer cover portion 25. In the case of the embodiment, the airbag 10 is arranged so as to cover the left and right sides of the waist MW of the wearer M in the mounted state (see FIG. 1). As shown in FIGS. 3 and 4, the airbag 10 has an inner side wall portion 10a arranged on the wearer M side (inside) and an outer wall portion 10b arranged on the outside when the airbag 10 has substantially the same outer shape. , And the peripheral edges of the inner side wall portion 10a and the outer wall portion 10b are sewn (bonded) to each other to form a bag shape having a substantially plate-like expansion completed shape. In the case of the embodiment, as shown in FIG. 4, the airbag 10 has two bag bodies 13 (13L, 13R) covering the left and right sides of the waist MW of the wearer M, and a bag body 13 (13L, 13R). A gas supply path portion 12 for communicating the bag bodies 13 (13L, 13R) with each other is provided on the upper end 13a side of the bag body 13. The airbag 10 has a symmetrical shape in a flatly deployed state.

The gas supply path portion 12 is configured to have an expansion completed shape in a rod shape substantially along the left-right direction. In the case of the embodiment, the gas supply path portion 12 is arranged at a position behind the pelvis MP of the wearer M when the expansion of the airbag 10 is completed, although detailed illustration is omitted. In the embodiment, a gas generator 5 is connected to the portion of the gas supply path portion 12 so as to be able to supply expansion gas to the inside of the airbag 10 (see FIG. 2). Although detailed illustration is omitted, the gas generator 5 is arranged near the center of the gas supply path portion 12 in the longitudinal direction, and is configured by enclosing compressed gas inside, so that the encapsulated state is maintained during operation. It is configured to be released so that cold gas can be ejected into the airbag 10. The gas generator 5 is electrically connected to the operation control device 1 described above, and is operated by inputting an operation signal from the operation control device 1 that has detected the fall of the wearer M.

In the case of the embodiment, each bag main body 13 (13L, 13R) has a mounting side portion 15 and a protective main body portion 16 arranged so as to extend downward from the mounting side portion 15, respectively, as shown in FIG. It is equipped with.

In the case of the embodiment, the mounting side portion 15 is formed so as to extend from the gas supply passage portion 12 to the left and right of the gas supply passage portion 12 in a state where the airbag 10 is spread flat. Therefore, it is located on the upstream side of the flow of the expansion gas G, which is on the upper end 13a side of the bag body 13. Further, the mounting side portion 15 is configured to be wound around the waist portion MW of the wearer M by using the belt-shaped portion 27 described later in the outer cover portion 25 at the time of mounting, and when the expansion of the airbag 10 is completed, the mounting side portion 15 is wound around. It will be placed on the side of the pelvic MP of the wearer M (see FIG. 7). In the case of the embodiment, the mounting side portion 15 is arranged over substantially the entire left and right sides on the upper edge 10c side of the airbag 10 in a flatly deployed state, including the gas supply path portion 12 arranged between them. There is.

The protective main body portion 16 is arranged on the lower end 13b side of the bag main body 13 so as to extend downward from the mounting side portion 15 when the expansion is completed, and is configured to cover the outside of the femoral trochanteric portion TP as the protection target portion. In the case of the embodiment, the outer shape of the femoral trochanteric portion TP can be widely covered, and the external shape in a flatly deployed state is slightly wider on the left-right direction side than on the up-down direction side and is applied to the lower end 16a side. It is configured as a substantially trapezoidal shape with a slightly narrow width. The protection main body portion 16 is configured such that the width dimension on the left-right direction side is substantially the same as the width dimension on the left-right direction side in the mounting side portion 15. As shown in FIGS. 6 and 7, the protective main body portion 16 is configured to be able to widely cover the outside of the femoral trochanteric portion TP in the front-back and up-down directions when the expansion is completed.

In the airbag 10 of the embodiment, the mounting side portion 15 and the protective main body portion 16 are partitioned by a tether 18 arranged inside the bag main body 13 (13L, 13R). In the case of the embodiment, the tether 18 regulates the separation distance between the inner side wall portion 10a and the outer wall portion 10b in the airbag 10, and the distance between the mounting side portion 15 and the protective main body portion 16 is substantially over the entire surface. The inner edge 18a is connected to the inner side wall portion 10a as a band shape that can be closed and the length dimension is set to be slightly smaller than the width dimension on the left-right side of the bag body 13, and the inner end is formed. The outer edge 18b facing the edge 18a is arranged in the bag body 13 so as to be coupled to the outer wall portion 10b (see FIGS. 3 and 4). The tether 18 is formed with a plurality (three in the case of the embodiment) of gas flow holes 19 capable of flowing out the expansion gas flowing into the mounting side portion 15 into the protective main body portion 16. ing. This tether 18 constitutes a floating suppressing means, and in the case of the embodiment, as shown in FIG. 3, the inner side edge 18a is connected to the inner side wall portion 10a in a state where the airbag 10 is spread flat. The binding site 22 is disposed in the airbag 10 so as to be located above the outer binding site 23 that binds the outer edge 18b to the outer wall portion 10b. That is, in the airbag 10 of the embodiment, the mounting side portion 15 is the film length on the vertical side of the inner side wall portion 15a arranged on the wearer M side (the film length L1 from the upper edge 10c to the inner binding site 22). ) Is configured to be shorter than the film length (film length L2 from the upper edge 10c to the outer binding site 23) on the vertical side of the outer wall portion 15b arranged on the outside (FIG. 3). reference). In the case of the embodiment, both the inner binding site 22 and the outer binding site 23 use sutures to continuously attach the inner edge 18a and the outer edge 18b of the tether 18 to the inner side wall portion over substantially the entire length. It is formed so as to be sewn to 10a and the outer wall portion 10b (see FIG. 4).

The outer cover portion 25 is formed of a woven fabric having a flexibility that is more tactile than the base fabric constituting the airbag 10, and is configured to cover the outer peripheral surface of the airbag 10 over the entire circumference. .. The outer cover portion 25 has an inner side wall portion 25a arranged inside (wearer M side) at the time of mounting and an outer wall portion 25b arranged outside at the time of mounting, and the inner side wall portion 25a and the outer wall portion 25b. It is made into a bag shape by connecting (sewing) the outer peripheral edges with each other, and the outer shape of the airbag 10 in a flatly unfolded state is flatly unfolded so that the airbag 10 can be smoothly expanded inside. It is set larger than the airbag 10 in the closed state (see FIGS. 2 and 3). Further, as shown in FIG. 2, the outer cover portion 25 has belt-shaped portions 27, 27 protruding outward on the left and right sides, respectively, on the upper edge side. The belt-shaped portion 27 is configured to have a mounting means on the tip 27a side. As the mounting means, in the embodiment, the belt-shaped portion 27 is arranged on the tip 27a side of the belt-shaped portion 27 so as to be easily finely adjusted according to the size of the waist circumference of the wearer M and easily attached and detached. A pair of planar fasteners 28 having a hook-shaped side portion 28a and a loop side portion 28b and capable of connecting the tips 27a of the belt-shaped portion 27 to each other are used.

In the wearing airbag device S of the embodiment, the tips 27a of the belt-shaped portions 27 of the outer cover portion 25 are connected to each other by using the planar fastener 28 as a mounting means, so that the waist portion MW (pelvic MP) of the wearer M is connected. ) Will be wrapped around and attached to the wearer M. Then, in the wearing airbag device S of the embodiment, if the sensor unit 2 detects the fall of the wearer M in a state of being mounted on the wearer M, an operation signal is output from the operation control device 1 to the gas generator 5. Then, the expansion gas flows into the inside of the airbag 10, and the airbag 10 completes the expansion as shown in FIGS. 5 to 7.

Then, in the wearing air bag device S of the embodiment, in the air bag 10, when the expansion is completed, the protection main body portion 16 covering the outside of the protection target portion composed of the femoral trochanter portion TP is arranged on the side of the pelvis MP. Even if the protective main body portion 16 is arranged so as to extend downward from the mounting side portion 15, the protective main body portion 16 is in a state where the lift from the waist MW is suppressed by the thigh 18 as a lift suppressing means, that is, It will be placed in close proximity to the protected site (femoral trochanteric portion TP) (see FIG. 7). Therefore, the protection main body portion 16 can quickly and accurately cover the outside of the femoral trochanteric portion TP as the protection target site.

Therefore, in the wearing airbag device S of the embodiment, the waist MW of the wearer M can be stably protected.

In the worn airbag device S of the embodiment, as a means for suppressing lifting, the inner side wall portion 10a and the outer wall portion are inside the airbag 10 (bag body 13) in the vicinity of the boundary portion between the mounting side portion 15 and the protection main body portion 16. Since the tether 18 for connecting the airbag 10b is arranged, it is possible to prevent the airbag 10 (bag body 13) from expanding excessively thickly. Further, the tether 18 is configured so that the inner binding site 22 that binds the inner edge 18a to the inner side wall portion 10a is located above the outer binding site 23 that binds the outer edge 18b to the outer wall portion 10b. In other words, the tether 18 is arranged so that the substantial film length L1 of the inner side wall portion 15a of the mounting side portion 15 is shorter than the substantial film length L2 of the outer wall portion 15b. Therefore, as shown in FIG. 7, when the expansion of the airbag 10 is completed, the airbag 10 (bag body 13) is placed so that the protective main body 16 is directed toward the wearer M side (inside) with the lower end 16a side facing the wearer M side (inside). , It can be arranged so as to bend from the inner binding site 22 as a starting point, and the lifting of the protective main body 16 from the waist MW can be accurately suppressed. The outside of the trochanteric part TP) can be accurately covered.

Further, as the airbag 10A, the one having the configuration shown in FIGS. 8 and 9 may be used. In the airbag 10A, the tether is not arranged inside, and the film length on the vertical side of the inner side wall portion 10a is shorter than that of the outer wall portion 10b as a means for suppressing lifting on the inner side wall portion 10a of the bag body 13A. A knob portion 35 is provided so as to do so. The knob portion 35 is formed in the region of the mounting side portion 15A in the inner side wall portion 10a, and in the case of the embodiment, specifically, it is shown in FIG. 8 in a state where the airbag 10A is flatly deployed. As described above, a notch 35a arranged along the left-right direction is formed on the side of the position slightly above the lower edge of the gas supply path portion 12A, and the peripheral edges of the notch are coupled so as to be connected to each other. A portion 35b is provided and formed as a long shape substantially along the left-right direction. In the state before the formation of the knob portion, the inner side wall portion 10A and the outer wall portion 10b have substantially the same outer shape.

In the airbag 10A (bag body 13A) having such a configuration, by providing the knob portion 35 on the inner side wall portion 10a side, the inner side wall portion 10a from the mounting side portion 15A to the protection main body portion 16A is provided on the vertical side of the inner side wall portion 10a. The film length can be made shorter than the film length on the vertical side of the outer wall portion 10b, and the inner side wall portion 10a can be arranged so as to bend with the knob portion 35 as the starting point (see FIG. 9). The lower end 13b side (the lower end 16a side of the protective main body portion 16A) at the time of completion of expansion can be directed to the wearer M side (inside). Further, since the knob portion 35 is configured to be arranged in the region of the mounting side portion 15A, the protective main body portion 16A is abbreviated up and down so as to start from the knob portion 35 arranged above. It can be arranged close to the wearer M side over the entire area, and the protection main body portion 16A can be accurately suppressed from being separated from the protection target site (femoral trochanteric portion TP). As shown in 9, the protection main body portion 16A can accurately cover the outside of the protection target site (femoral trochanteric portion TP). In FIG. 9, the outer cover portion is omitted.

Further, as the airbag 10B, those having the configurations shown in FIGS. 10 to 13 may be used. In the airbag 10B, a partition wall 40 for partitioning the mounting side portion 15B and the protective main body portion 16B is formed inside the bag main body 13B, and the protective main body portion 16B has an expansion completed shape and is thinner than the mounting side portion 15B. It is configured to be. Specifically, the partition wall 40 is configured so that the space between the mounting side portion 15B and the protective main body portion 16B can be closed over substantially the entire surface, and the length dimension is the width dimension on the left-right side of the bag main body 13B. The end edge 40a is connected to the inner side wall portion 10a, and the end edge 40b facing the end edge 40a is connected to the outer wall portion 10b so as to be arranged in the bag body 13B. (See FIG. 10). In this partition wall 40, the positions of the inner binding site 43 and the outer binding site 44 that bond the edge 40a and 40b to the inner side wall portion 10a and the outer wall portion 10b, respectively, are substantially aligned with each other in the vertical direction. , Are arranged. That is, the partition wall 40 is arranged substantially along the horizontal direction when the expansion of the airbag 10B is completed (see FIG. 13). The partition wall 40 is formed with a plurality (three in the case of the embodiment) of gas flow holes 41 capable of flowing out the expansion gas flowing into the mounting side portion 15B into the protective main body portion 16B along the longitudinal direction. ing. In the region of the protective main body portion 16B, a seam portion 47 that directly connects the inner side wall portion 10a and the outer wall portion 10b is arranged in order to make the expansion completed shape of the protective main body portion 16B thin. In the case of the embodiment, three seam portions 47 are arranged side by side in the left-right direction side in a state where the bag main body 13B is spread flat in a straight line substantially along the vertical direction. In the airbag 10B, the partition wall 40 and the seam portion 47 form a floating suppressing means.

In the airbag 10B (bag body 13B) having such a configuration, at the initial stage of expansion of the airbag 10B, the mounting side portion 15B first causes the expansion gas to flow into the inside to expand, and then the protective body portion 16B Will expand by inflowing the expansion gas into the inside, but since the protection main body portion 16B and the mounting side portion 15B are partitioned by the partition wall 40 capable of flowing the expansion gas, the protection main body portion 16B The expansion gas G flows downward from the mounting side portion 15B through the gas flow hole 41 formed in the partition wall 40 (see FIG. 13). Further, the protective main body portion 16B is configured so that the width dimension W1 at the completion of expansion is made smaller than the width dimension W2 of the mounting side portion 15B, and the protective main body portion 16B expands thinner than the mounting side portion 15B. The femoral trochanteric part TP as a protection target site is located laterally to the left and right of the pelvic MP with respect to the horizontal center of the wearer M's body, but in the air bag 10B, the femur is located. The protective main body 16B that covers the outside of the trowel portion TP is thinner than the mounting side portion 15B arranged on the side of the pelvis MP, in other words, the protective main body portion 16B is attached to the mounting side portion 15B. Since it is arranged so as to be relatively recessed with respect to the pelvis MP, even if it is configured to cover the femoral trochanteric part TP (protected part) located on the left and right sides of the pelvic MP, the femoral trochantery The protruding state of the portion TP from the pelvis MP can be absorbed by the dimensional difference in thickness between the mounting side portion 15B and the protective main body portion 16B, and the protective main body portion 16B separates the lower end 16a side from the wearer M. It is possible to suppress the arrangement in the expanded state as described above, and it is possible to accurately suppress the lifting of the protection main body portion 16B from the wearer M. As a result, the protection main body portion 16B can accurately cover the outside of the protection target portion (femoral trochanteric portion TP). In particular, in the embodiment, the airbag 10B has a configuration in which the portion of the mounting side portion 15B is wound around the waist portion MW of the wearer M by using the belt-shaped portion of the outer cover portion (not shown). Therefore, the protective main body portion 16B extending downward from the mounting side portion 15B is likely to be lifted from the wearer M, but by expanding to a thinner thickness than the mounting side portion 15B, such lifting is accurately suppressed. be able to.

Furthermore, as the airbag 50, those having the configurations shown in FIGS. 13 and 14 may be used. The airbag 50 has an inner side wall portion 50a arranged on the wearer M side (inside) and an outer wall portion 50b arranged on the outside when the airbag 50 has substantially the same outer shape, and has an inner side wall portion 50a. By sewing (bonding) the peripheral edges of the outer wall portion 50b and the outer wall portion 50b, the expansion completed shape is formed into a bag shape having a substantially plate shape. In the case of the embodiment, as shown in FIG. 14, the airbag 50 has two protective main body portions 52 (52L, 52L, which are arranged so as to cover the outside of the femoral trochanteric portion TP as a protection target site when expansion is completed. 52R), a gas supply path 51 connected to a gas generator (not shown), and two gas flow paths 53 (2) that communicate the gas supply path 51 with each protection main body 52 (52L, 52R). 53L, 53R) and so on. The airbag 50 has a symmetrical shape in a flatly deployed state. The outer peripheral side of the airbag 50 is covered with the outer cover portion 25 (see the two-dot chain line in FIG. 17) like the above-mentioned wearing airbag device S, and the outer cover is the same as the above-mentioned wearing airbag device S. Using a belt-shaped portion (not shown) of the portion 25, the portion on the gas supply path portion 51 side on the upper edge 50c side is mounted on the wearer M as the winding portion side wound around the pelvis MP. Is.

The gas supply path portion 51 is arranged on the upper edge 50c side of the airbag 50 and on the center side in the left-right direction, and the expansion completion shape is a rod shape substantially along the left-right direction to complete the expansion of the airbag 50. Occasionally, it is a site located behind the pelvic MP of the wearer M (see FIGS. 15 and 16). The gas supply path portion 51 is configured to be connected to a gas generator (not shown), similarly to the gas supply path section 12 in the airbag 10 described above.

The protective main body portion 52 (52L, 52R) is arranged so that a step is provided with respect to the gas supply passage portion 51 so that the upper end thereof is located below the upper edge of the gas supply passage portion 51. (See Fig. 14). That is, each protection main body 52 is arranged below the gas supply path 51 arranged behind the pelvis MP when the expansion of the airbag 50 is completed, in other words, below the pelvis MP. (See FIG. 16). The two gas flow path portions 53 (53L, 53R) that communicate the protection main body portions 52 (52L, 52R) and the gas supply passage portion 51 are located outward in the left-right direction from the end portion of the gas supply passage portion 51. The tip 53a side is connected to the lower end 52a side of the protective main body 52 so as to extend downward and be inverted so as to be upward at a position below the protective main body 52. .. Specifically, each gas flow path portion 53 is formed in a substantially J-shape with the airbag 50 deployed flat, and the tip 53a is provided at the front and lower ends of each protection main body portion 52 when expansion is completed. It is configured to be connected to the side. Then, each protective main body 52 is configured to have a substantially rectangular outer shape so as to project from the tip 53a of the gas flow path 53 toward the center on the left and right in a state where the airbag 50 is spread flat. Has been done. As shown in FIGS. 15 and 17, the protective main body portion 52 is configured to be able to widely cover the outside of the femoral trochanteric portion TP in the anterior-posterior-posterior and vertical directions when the expansion is completed.

In the airbag 50 having such a configuration, each protective main body 52 that covers the outside of the left and right femoral trochanteric portions TP when the expansion is completed is a gas supply path portion that is arranged behind the pelvic MP at the initial stage of expansion. It has a configuration in which an expansion gas flows into the inside of the protection main body 52 from below via the gas flow path portion 53 and expands, and the inside of the gas flow path portion 53 expands as shown in FIG. The gas G flows away from the center of the wearer M, but the airbag 50 passes through the gas flow path portion 53 because the upper edge 50c side is wound around the pelvis MP. The expansion gas flowing into the protection main body 52 is inverted and flows toward the center side of the wearer M. Specifically, in the airbag 50 having the above configuration, the tip 53a of the gas flow path portion 53 is connected to the front lower end side of the protection main body portion 52 away from the gas supply passage portion 51, and the protection main body portion. The expansion gas 52 flows in from the front lower end side to the inside to expand, and at this time, the expansion gas heads toward the horizontal center side of the wearer M's body inside the protective main body 52. It will flow like this. Therefore, it is possible to suppress the protection main body portion 52 from being arranged away from the wearer M by the flow of the expansion gas into the airbag 50, and the femoral trochanter portion as a protection target portion. The outside of the TP can be accurately covered by the protective main body 52.

In the wearing air bag device S of the embodiment, the vicinity of the base of the femur TB of the wearer M (femoral trochanter portion) is provided by the two protective main body portions 16, 16A, 16B, 52 of the air bags 10, 10A, 10B, 50. Since the TP) can be stably protected, the wearer M can prevent the femur TB from being fractured due to the fall, which is protracted by the treatment, and can be suitably used for the elderly.

Further, in the wearing airbag device S of the embodiment, as the airbags 10, 10A, 10B, two bag bodies 13, 13A, 13B connected by the gas supply path portion 12 are provided, and the bag bodies 13, 13A, respectively. The left and right protected parts (the one that protects the femoral trochanteric part TP is used by 13B, but the airbag configuration is not limited to the embodiment, and the left and right protected parts can be protected respectively. In addition, a separate airbag and a separate gas generator capable of supplying expansion gas to each airbag may be arranged.

In the embodiment, as the wearing airbag device, a type having a belt-shaped portion and being worn by being wrapped around the waist is described as an example, but the present invention can be applied. The worn airbag device is not limited to the embodiment, and is of a type that is worn on the wearer's body such as a vest or a jacket and is inflated so that the airbag protrudes from the lower end side in the worn state. The present invention may be applied to a worn airbag device. Further, in the embodiment, the airbag is stored in a state of being flatly deployed inside the outer cover portion, but of course, the airbag may be stored in a folded state inside the outer cover portion.

10,10A,10B ... Airbag, 10a ... Inner side wall part, 10b ... Outer wall part, 15,15A, 15B ... Mounting side part, 16,16A, 16B ... Protective body part, 16a ... Lower end, 18 ... Tether (lifting) Suppressing means), 18a ... Inner edge, 18b ... Outer edge, 19 ... Gas flow hole, 22 ... Inner coupling site, 23 ... Outer coupling site, 35 ... Knob (lifting suppressing means), 40 ... Bulk partition (lifting suppression) Means), 41 ... Gas flow hole, 47 ... Seam portion (lifting suppressing means), 50 ... Airbag, 50a ... Inner side wall portion, 50b ... Outer wall portion, 51 ... Gas supply path portion, 52 (52L, 52R) ... Protective body, 52a ... lower end, 53 (53L, 53R) ... gas flow path, 53a ... tip, M ... wearer, MW ... waist, MP ... pelvis, TB ... femur, TP ... femur trochanter, S ... Wearing airbag device.

Claims (5)

A wearing airbag device that can protect the wearer's waist.
It is configured to be worn by the wearer around the pelvis, and can be expanded so as to inflow the expansion gas into the inside and cover the outside of the protected portion consisting of the left and right femoral trochanters of the wearer. Equipped with an airbag that is said to be
The airbag is configured as a substantially plate-like shape in which the inflatable completed shape is formed by connecting the peripheral edges of the inner side wall portion arranged on the wearer side and the outer wall portion arranged on the outer side to each other. With
A mounting side portion located on the upstream side of the flow of expansion gas and arranged on the side of the pelvis when expansion is completed.
A protective main body portion that is arranged so as to extend downward from the mounting side portion when expansion is completed and covers the outside of the protected portion.
Is configured to have
A wearing airbag device characterized in that it is configured to be able to suppress the lifting of the protective main body portion from the wearer when the expansion is completed by the lifting suppressing means. In the airbag, a tether as a floating suppressing means is arranged so as to connect the inner side wall portion and the outer wall portion in the vicinity of the boundary portion between the mounting side portion and the protection main body portion.
With the airbag deployed flat, the tether positions the inner binding site that binds one end edge to the inner wall and above the outer binding site that binds the other edge to the outer wall. The worn airbag device according to claim 1, wherein the airbag device is disposed in the airbag. As the lift suppressing means, a knob portion is formed in the region of the inner side wall portion so as to shorten the film length on the vertical side of the inner side wall portion as compared with the outer wall portion.
The worn airbag device according to claim 1, wherein the knob portion is arranged in the area of the mounting side portion. As the floating suppressing means,
A partition wall is provided in the airbag so that the expansion gas can flow and separates the mounting side portion and the protection main body portion.
The worn airbag device according to claim 1, wherein the protective main body portion is configured so that the shape of the completed expansion is thinner than that of the mounting side portion. A wearing airbag device that can protect the wearer's waist.
It is configured to be worn by the wearer around the pelvis, and can be expanded so as to inflow the expansion gas into the inside and cover the outside of the protected portion consisting of the left and right femoral trochanters of the wearer. Airbags that are said to be
A gas generator that supplies expansion gas to the airbag,
To prepare
The airbag is configured as a substantially plate-like shape in which the inflatable completed shape is formed by connecting the peripheral edges of the inner side wall portion arranged on the wearer side and the outer wall portion arranged on the outer side to each other. The upper edge side is the winding site side that is wound around the pelvis, and the two protective body portions are mounted on the wearer and are arranged so as to cover the outside of the protected portion when the expansion is completed. , A gas supply path portion connected to the gas generator, and two gas flow path sections for communicating the gas supply path section with each of the protection main body portions.
The gas supply passage portion is configured to be arranged behind the pelvis.
Each of the gas flow paths extends outwardly downward in the left-right direction from the gas supply path portion, and is inverted so as to be upward at a position below the protection main body portion so as to be on the tip side. A wearing airbag device, characterized in that it communicates with the protective main body portion.

Images