JP2022097030A - Wearing air bag device - Google Patents

Abstract

To provide a wearing air bag device capable of stably protecting the hip part of a wearer.SOLUTION: A wearing air bag device S is configured to be capable of protecting the hip part of a wearer and is provided with an air bag 10 which is configured to be a bag shape composed of a flexible sheet body and be worn by a wearer M around the pelvis MP, and to be inflatable so as to cover an outside of a part to be protected composed of left and right femoral trochanteric parts TP of a wearer by flowing inflation gas inside. The air bag is provided with: a fitting side part arranged in an area wound around the pelvis when inflation is completed; two protection main body parts 14 arranged so as to extend below from the device side part when inflation is completed and to cover an outside of the part to be protected; and expansion suppressing means 17 capable of suppressing expansion of each of the protection main body parts when inflation is completed so as to separate the lower end side from the part to be protected.SELECTED DRAWING: Figure 7

Description

The present invention relates to a worn airbag device configured to protect 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 of them are configured to cover the waist with an inflated airbag (see, for example, Patent Document 1).

International Publication No. 2019/207474

In the conventional worn airbag device, the airbag is configured to inflate while protruding downward from the state of being wrapped around the waist, so that the inflating airbag expands so as to separate the lower end side 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 has a bag-like shape made of a flexible sheet body and is configured to be worn by the wearer around the pelvis, and at the same time, an expansion gas is allowed to flow into the inside to allow the wearer's left and right femoral trochanters to flow. An inflatable airbag is provided to cover the outside of the protected area consisting of parts.
The airbag
The wearing side part placed in the area wrapped around the pelvis when the expansion is completed,
When the expansion is completed, the two protective main bodies are arranged so as to extend downward from the mounting side portion and cover the outside of each protected portion.
An expansion suppressing means capable of suppressing expansion of each protection main body at the time of completion of expansion so that the lower end side is separated from the protection target portion,
It is characterized by having.

In the wearing air bag device of the present invention, in the air bag, when the expansion is completed, two protective main body portions covering the outside of the protected target portion consisting of the femoral trochanter portion are arranged in the area wrapped around the pelvis. Even if the structure is arranged so as to extend downward from the side portion, these protection main body portions are suppressed from being expanded so as to separate the lower end side from the protection target portion by the expansion suppressing means. , It will be placed in a state close to the protection target site (trochanteric part of the femur). Therefore, each protective main body can quickly and accurately cover the outside of the protected portion (femoral trochanteric portion).

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

Specifically, each airbag is configured by connecting the peripheral edges of an inner side wall portion arranged on the wearer side and an outer wall portion arranged on the outer side with substantially the same outer shape. Consists of an airbag configuration,
The protective main body is abbreviated in the vertical direction so as to be overlapped with the overlapped portion on one end edge side on the left-right side of each protective main body in a flatly deployed state in the protective main body component of the airbag configuration. It is configured by forming a folded portion along the line and connecting the upper end side and the lower end side of the folded portion to the overlapped portion side.
It is preferable that the expansion suppressing means is composed of a folded-back portion and an overlapped portion.

If the worn airbag device has the above configuration, the folded-back portion and the overlapped portion are overlapped so that the protective main body portion is partially and thickly expanded. In a mode in which the upper end side and the lower end side are connected by stacking two sheets, the rigidity is increased and it becomes difficult to bend, and the expansion of the lower end side of the protective main body at the completion of expansion is accurately performed. Can be suppressed.

Further, the airbag is configured to include an inner side wall portion arranged on the wearer side and an outer wall portion arranged on the outer side.
The protective body is configured to be able to cover the outside of the area including the upper and lower sides of the femoral trochanter when the expansion is completed.
On the lateral wall side of the protective body, a projecting region that partially protrudes outward when expansion is completed is provided in the vertical direction to at least the region covering the outside of the upper portion of the femoral trochanter in the mounted state. As a configuration that is continuously arranged substantially along the
The expansion suppressing means may be configured depending on the protruding region.

With such a configuration, the airbag is protected from being arranged on the outer wall side of the protective body portion like a reinforcing rib that partially protrudes outward and extends vertically. The rigidity of the main body portion can be increased, and the expansion of the lower end side of the protective main body portion at the time of completion of expansion can be accurately suppressed.

When the protruding region is arranged on the outer wall side in this way, the protruding region is partially tacked on the outer wall portion, and the film length on the front-rear side of the outer wall portion is provided. Is preferably set to be larger than the film length on the anterior-posterior side of the inner side wall portion, because the protruding region can be easily configured.

Further, in the airbag, the inner side wall portion arranged on the wearer side may be made of a material having a lower elongation than the outer wall portion, and this inner side wall portion may be used as a means for suppressing expansion. With such a configuration, when the airbag is inflated, the outer wall portion tends to stretch as compared with the inner side wall portion, so that the airbag causes the outer wall portion to be greatly curved as compared with the inner side wall portion. In other words, since the bending of the inner side wall portion in the vertical direction when the expansion is completed is suppressed, the protection main body portion expands so as to separate the lower end side from the protection target portion. It is possible to accurately suppress the arrangement of the bags.

Furthermore, the airbag is configured to have an inner side wall portion arranged on the wearer side and an outer wall portion arranged on the outer side.
The protective body is configured to be able to cover the outside of the area including the upper and lower sides of the femoral trochanter when the expansion is completed.
On the inner side wall side of the protective main body, a binding site that is connected to each other by pinching the inner side wall portion at a portion separated from each other in the left-right direction is covered at least the outer side of the upper portion of the femoral trochantery portion in the mounted state. The area is continuously arranged substantially along the vertical direction.
Depending on the binding site, expansion suppressing means may be configured.

Even if the airbag is configured in this way, it is arranged substantially along the vertical direction, and the rigidity of the inner side wall portion is increased by the joint portion formed like a reinforcing rib by stacking a part of the inner side wall portion in two layers. Can be partially enhanced. In addition, when the airbag is inflated, the portion near the binding site is less likely to expand than the inner side wall portion and the outer wall portion, so that the airbag expands so that the inner side wall portion is greatly curved in the vertical direction. Since it is possible to suppress this, it is possible to accurately prevent the protection main body portion from being expanded and arranged so as to separate the lower end side from the protection target portion.

It is the schematic of the state which the wearer wears the wearing airbag device which is one Embodiment of this invention. It is a top view of the wearing airbag device of an embodiment in a flat unfolded state. It is a schematic cross-sectional view of the part III-III of FIG. It is a top view of the state in which the airbag used in the wearing airbag device of an embodiment and the airbag component constituting the airbag are 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 cross-sectional view of the worn airbag device of the embodiment in a worn state in which the airbag has completed expansion. It is a partially enlarged plan view which shows the airbag which is another embodiment of this invention, and the base material which comprises an airbag. FIG. 8 is a schematic cross-sectional view showing a state in which the airbag of FIG. 8 is inflated in a wearing state. FIG. 8 is a schematic cross-sectional view showing a state in which the airbag of FIG. 8 is inflated in a wearing state. FIG. 8 is a schematic perspective view showing a state in which the airbag of FIG. 8 is inflated in a wearing state. It is a partially enlarged plan view of the airbag which is still another embodiment of this invention. It is a schematic cross-sectional view in the wearing state which shows the state in which the airbag which is still another embodiment of this invention is inflated. FIG. 13 is a schematic perspective view showing a state in which the airbag of FIG. 13 is inflated in a wearing state. It is a partially enlarged plan view of the airbag which is still another embodiment of this invention. FIG. 15 is a schematic cross-sectional view showing a state in which the airbag of FIG. 15 is inflated in a wearing state. FIG. 15 is a schematic vertical sectional view showing a state in which the airbag of FIG. 15 is inflated in a wearing state. It is a partially enlarged plan view of the airbag which is still another embodiment of this invention. FIG. 18 is a schematic cross-sectional view showing a state in which the airbag of FIG. 18 is inflated in a wearing state. FIG. 18 is a schematic vertical sectional view showing a state in which the airbag is inflated in FIG. 18 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 30 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 30 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 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 mounted on the wearer M by being wound around the pelvis MP by using the belt-shaped portion 32 described later in the outer cover portion 30. 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). The airbag 10 has a mounting side portion 12 arranged in an area wound around the pelvic MP when expansion is completed, and two protective main body portions 14 (14L) arranged so as to extend downward from the mounting side portion 12 when expansion is completed. , 14R) and. In the case of the embodiment, the mounting side portion 12 is configured to communicate with each other on the upper end side of the protective main body portions 14L and 14R. The airbag 10 has a symmetrical shape in a flatly deployed state.

The mounting side portion 12 has an expansion completed shape configured as a rod shape substantially along the left-right direction, and is arranged at a position continuous from the belt-shaped portion 32 in the outer cover portion 30 (see FIG. 2). When the expansion of 10 is completed, it will be arranged at a position connected to the belt-shaped portion 32 and behind the pelvic MP of the wearer M. That is, the mounting side portion 12 is arranged in a region wound around the pelvic MP when the expansion is completed. In the embodiment, the gas generator 5 is connected to the mounting side portion 12 so as to be able to supply the expansion gas to the inside of the airbag 10 (see FIG. 2). That is, the mounting side portion 12 is a portion that also acts as a gas supply path portion for supplying expansion gas to each protection main body portion 14 side. Although detailed illustration is omitted, the gas generator 5 is arranged near the center of the mounting side portion 12 in the longitudinal direction, and is configured by enclosing compressed gas inside, and releases the encapsulated state during operation. Therefore, the structure is such 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 configured to be operated by inputting an operation signal from the operation control device 1 that has detected the fall of the wearer M.

The protective main body portion 14 (14L, 14R) is formed so as to extend downward from the mounting side portion 12 while extending outward from the mounting side portion 12 in a state where the airbag 10 is spread flat, and is to be protected at the time of mounting. The outer shape of the femoral trochantery portion TP as a site can be widely covered including the upper side and the lower side, and the outer shape in a flatly developed state is a substantially rectangular shape. That is, each protection main body portion 14 includes an upper region 14a arranged so as to extend outward from the mounting side portion 12 to the left and right, and a lower region 14b extending downward from the upper region 14a (FIG. FIG. 4). Specifically, the protective main body portion 14 is configured to cover the side (outside) from the pelvic MP to the lower trochanter UP when worn (see FIG. 7). Further, as shown in FIG. 4, each protective main body portion 14 is on the outer edge side in a flatly unfolded state (one end edge side in the left-right direction in a flatly unfolded state, and the leading edge 14d side in the mounted state). In addition, it has a folded portion 17 configured so that the expanded portions are doubly overlapped. Since the folded portion 17 is configured so that the expanded portions are doubly overlapped (the folded portion 23 and the overlapped portion 24 described later are overlapped), the folded portion 17 and the general portion 16 on the trailing edge 14e side in the mounted state In comparison, the thickness at the completion of expansion is about double (see FIG. 6). The folded portion 17 is formed over the entire upper and lower parts, and in the case of the embodiment, the folded portion 17 constitutes an expansion suppressing means. In the case of the embodiment, the folded portion 17 is formed from the front edge 14d side of the protective main body portion 14 to the region beyond the center of the front and rear when the expansion is completed, and specifically, the end portion 17a on the center side (specifically, the end portion 17a on the center side. The end edge 23c) of the folded portion 23) is formed so as to be arranged at positions on the left and right outer sides of the trochanteric portion TP of the femur (see FIG. 6).

In the embodiment, as shown in FIG. 4, the airbag 10 has an inner side wall portion 20a arranged on the wearer M side (inside) and an outer wall portion arranged on the outside with substantially the same outer shape. It is formed from an airbag component 20 configured by connecting the peripheral edges of 20b to each other. In the airbag component 20, each protective body component 22 is formed as a substantially rectangular shape so as to be wider to the left and right than each protective body 14 in the airbag 10 by the width dimension of the folded portion 17. Has been done. The folded portion 17 is adjacent to the left and right inward sides of the airbag configuration 20 in a flatly unfolded state, with the outer edge side portion in the left-right direction of each protection body configuration portion 22 as the folded portion 23. It is overlapped on the inner peripheral surface side (inner side wall portion 20a side) of the overlapped portion 24, and the upper end 23a side and the lower end 23b side of the folded portion 23 are on the upper end 24a side and the lower end 24b side of the overlapped portion 24, respectively. , Formed by connecting (sewn with sutures) (see FIGS. 3 and 4).

The outer cover portion 30 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 30 has an inner side wall portion 30a arranged inside (wearer M side) at the time of mounting and an outer wall portion 30b arranged outside at the time of mounting, and has an inner side wall portion 30a and an outer wall portion 30b. 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 FIG. 2). Further, as shown in FIG. 2, the outer cover portion 30 has belt-shaped portions 32 and 32 protruding outward on the left and right sides, respectively, on the upper edge side. The belt-shaped portion 32 is configured to have a mounting means on the tip end 32a side. As the mounting means, in the embodiment, each is arranged on the tip 32a side of the belt-shaped portion 32 so as to be easily fine-tuned according to the size of the waist circumference of the wearer M and to be easily attached and detached. A pair of planar fasteners 33 having a hook-shaped side portion 33a and a loop side portion 33b and capable of connecting the tips 32a of the belt-shaped portions 32 to each other are used.

In the wearing airbag device S of the embodiment, the tips 32a of the belt-shaped portions 32 of the outer cover portion 30 are connected to each other by using the planar fastener 33 as a mounting means, so that the waist portion MW (pelvic MP) of the wearer M is connected. ), It will be attached to the wearer M (see FIG. 1). 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 airbag device S of the embodiment, in the airbag 10, when the expansion is completed, the two protective main body portions 14 (14L, 14R) covering the outside of the protected target portion including the femoral trochanteric portion TP are pelvic. These protective main body portions 14L and 14R are folded portions 17 as expansion suppressing means even if they are arranged so as to extend downward from the mounting side portion 12 arranged in the area wound around the MP. As a result, the lower end 14c side is suppressed from being expanded so as to be separated from the protection target site, and is arranged in a state close to the protection target site (femoral trochanteric portion TP) (FIG. 7). reference). Therefore, the outer side of the protected target portion (femoral trochanteric portion TP) can be quickly and accurately covered by the protective main body portions 14L and 14R.

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

Specifically, in the wearing airbag device S of the embodiment, the airbag 10 is folded back at the protective main body component 22 (airbag component 20) on the front edge 14d side at the time of mounting in each protective main body 14. The folded portion 17 configured to overlap the portion 23 and the overlapped portion 24 is arranged (see FIG. 6), and the folded portion 17 is used as an expansion restricting means. That is, since the wearing airbag device S of the embodiment has a configuration in which the folded-back portion 23 and the overlapped portion 24 are overlapped with each other to partially and thickly expand the protective main body portion 14, each of them has a plate-shaped expansion portion. The folded-back portion 23 and the overlapped portion 24 are overlapped with each other to connect the upper end side and the lower end side, so that the rigidity is increased and it becomes difficult to bend, and the lower end of the protective main body portion 14 when the expansion is completed. The expansion on the 14c side can be accurately suppressed. In particular, in the airbag 10 of the embodiment, the folded portion 17 has the central end portion 17a (the end edge 23c of the folded portion 23 constituting the folded portion 17) on the left and right of the femoral trochanteric portion TP. In other words, the trochanteric part TP (protection target part) of the femur is provided by the folded part 17 which is thicker and swells than the general part 16 on the trailing edge side. Since the structure covers the left and right sides, the femoral trochanteric portion TP can be accurately protected. In the airbag 10 of the embodiment, the folded portion 17 is formed so that the folded portion 23 is overlapped inside the overlapped portion 24, but the folded portion is overlapped with the outside of the overlapped portion 24. May form a folded portion. However, from the viewpoint of reliably maintaining the overlapped state of the folded portion and the overlapped portion at the time of falling, it is preferable to form the folded portion by overlapping the folded portion inside the overlapped portion.

Further, as the airbag 35, the one having the configuration shown in FIGS. 8 to 11 may be used. Similar to the airbag 10 described above, the airbag 35 is arranged so as to extend downward from the mounting side portion 36 arranged in the region wound around the pelvic MP when the expansion is completed and the mounting side portion 36 when the expansion is completed. It is configured to include two protective main body portions 37, 37. The protective main body 37 is formed so as to extend downward from the mounting side portion 36 while extending outward from the mounting side portion 36 in a state where the airbag 35 is spread flat, and the femur as a protection target portion at the time of mounting. The outer shape around the trochanter portion TP can be widely covered including the upper side and the lower side, and the outer shape in a flatly developed state is a substantially rectangular shape. Specifically, also in the airbag 35, the protective main body portion 37 is configured to cover the side (outside) from the pelvic MP to the lower trochanter UP when attached (see FIG. 10). The airbag 35 is configured to include an inner side wall portion 35a arranged on the wearer M side and an outer wall portion 35b arranged on the outer side. Then, in this airbag 35, a protruding region 38 that partially protrudes outward when expansion is completed is continuously provided on the outer wall portion 35b of each protective main body portion 37 along substantially in the vertical direction in the mounted state. The protruding region 38 constitutes a means for suppressing expansion. The protruding region 38 is arranged in a region covering the outside at least in the upper portion of the femoral trochanteric portion TP, and in the embodiment, it is disposed over substantially the entire upper and lower parts of the protective main body portion 37. Specifically, the protruding region 38 is a position substantially centered on the anterior-posterior direction side of the protective main body 37, and when the expansion is completed, as shown in FIG. 9, the left and right outer sides of the femoral trochanteric portion TP. It is a configuration that is arranged at the position where. In the protruding region 38, the tack 39 is partially provided on the outer wall portion 35b so that the film length on the front-rear side of the outer wall portion 35b is larger than the film length on the front-rear side of the inner side wall portion 35a. It is configured by setting it large. Specifically, in the airbag 35, as shown in FIG. 8, notches 42 recessed in a substantially V shape are provided on the upper edge side and the lower edge side of the outer wall material 41 constituting the outer wall portion 35b. The protruding region 38 is formed by forming the tack 39 so that the peripheral edges 42a of the notch 42 are coupled to each other. The outer side wall material 41 has a width dimension on the front-rear side of the notch 42, which is larger than the width dimension on the front-rear direction side of the inner side wall material 40 constituting the inner side wall 35a, and the peripheral edge of the notch 42. With the 42a coupled, the outer shape is substantially the same as the outer shape of the inner side wall material 40. Then, in this airbag 35, the protective main body portion 37 is formed by coupling the outer peripheral edges of the outer wall material 41 and the inner side wall material 40 in a state where the peripheral edges 42a of the notch 42 are coupled to each other. ing.

In the airbag 35 having such a configuration, the protruding region 38 is arranged on the outer wall portion 35b side of the protective main body portion 37 like a reinforcing rib that partially protrudes outward and extends vertically. (See FIG. 11), the rigidity of the protective main body 37 can be increased, and the expansion of the lower end 37b side of the protective main body 37 at the completion of expansion can be accurately suppressed. Specifically, in this airbag 35, the protective main body portion 37 is provided with a protruding rib (protruding region 38) from the upper end 37a side to the lower end 37b side, and bends outward on the lower end 37b side. It is possible to suppress the expansion of the lower end 37b side of the protective main body 37 when the expansion is completed. Therefore, as shown in FIG. 10, the protection main body portion 37 can accurately cover the outside of the protection target portion (femoral trochanteric portion TP). Further, also in this airbag 35, the protruding region 38 formed so as to partially protrude is arranged at a position on the left and right outer sides of the femoral trochanteric portion TP, and is thickly expanded. Since the protruding region 38 covers the left and right outer sides of the femoral trochanteric portion TP (protection target site) (see FIGS. 9 and 10), the femoral trochanteric region TP can be accurately protected. can. In FIGS. 9 to 11, the outer cover portion is omitted.

Further, as the airbag 35A, as shown in FIG. 12, a bag having a protruding region 38A formed by simply providing a tack 39A on the outer wall portion 35b without providing a notch is used. May be good. Specifically, in the airbag 35A, in the vertical direction near the center of the outer wall material 41A in which the width dimension on the front-rear direction side is set larger than that of the inner side wall material 40A constituting the inner side wall portion 35a. The tack 39A is partially provided so as to form a crease along the line, and the outer peripheral edges of the inner side wall material 40A and the outer wall material 41A are joined together with the tack 39A to form an arrangement region of the tack 39A. , The protruding region 38A. In the airbag 35A having such a configuration, the protruding region is larger than the protruding region of the above-mentioned airbag, which is maintained in the protruding state over the entire upper and lower parts including the upper end side and the lower end side of the protective main body portion 37A. It is formed so as to converge the protruding state toward the upper end side and the lower end side of the protective main body portion 37A, but in the upper and lower intermediate portions, the film length of the outer wall portion 35b is increased to partially outside. Since it is arranged so as to project toward the direction, it is possible to accurately suppress the expansion of the protection main body portion 37A on the lower end 37b side when the expansion is completed.

In the airbags 35 and 35A, the protruding regions 38 and 38A are provided with tacks 39 and 39A partially on the outer wall portion 35b, and the film length on the front-rear side of the outer wall portion 35b is set on the inner side wall portion 35a. Since it is configured by setting it larger than the film length on the front-back direction side, the protruding regions 38 and 38A can be easily configured. Further, in the airbags 35 and 35A, the peripheral length of the protective main body portions 37 and 37A in the left-right direction side (waist circumference direction at the time of mounting) in the flatly deployed state is set, and the inner side wall portion 35a side is the outer wall portion 35b. Since the setting is relatively short compared to the side, the lower end 37b side at the time of completion of expansion is set to squeeze inward, and the expansion of the lower end 37b side can be suppressed. If such a point is not taken into consideration, as shown in FIGS. 13 and 14, the airbag 35B is provided so as to have a protruding portion 38B (protruding region) that partially protrudes outward from the protective main body portion 37B. It may be configured three-dimensionally. Also in FIGS. 13 and 14, the outer cover portion is omitted.

In the air bags 35, 35A, 35B, the protruding regions 38, 38A (protruding portions 38B) as expansion suppressing means are arranged over substantially the entire upper and lower parts of the protective main body portions 37, 37A, 37B. However, since it is sufficient that the protruding region can secure the rigidity capable of suppressing the expansion of the lower end 37b side of the protective main body portions 37, 37A, 37B, at least the upper portion of the femoral trochanteric portion TP (that is, from the pelvic MP). It suffices to be arranged in the area covering the outside of the femoral trochanteric portion TP), and as shown by the alternate long and short dash line in FIG. 10, the lower end side of the protective main body portion (the region covering the side of the lower trochanter UP). ) May not be arranged. As in the embodiment, if the protruding regions 38, 38A (protruding portions 38B) are arranged in substantially the entire upper and lower parts of the protective main body portions 37, 37A, 37B, the region of the UP under the trochanter is also thickly expanded. Depending on the area, it can be properly protected.

Further, as the airbag 45, the one having the configuration shown in FIGS. 15 to 17 may be used. Similar to the airbags 10 and 35 described above, the airbag 45 extends downward from the mounting side portion 46 arranged in the area wound around the pelvic MP when the expansion is completed and the mounting side portion 46 when the expansion is completed. It is provided with two protective main body portions 47, 47, which are arranged. The protective main body 47 is formed so as to extend downward from the mounting side portion 46 while extending outward from the mounting side portion 46 in a state where the airbag 45 is spread flat, and the femur as a protection target portion at the time of mounting. The outer shape around the trochanter portion TP can be widely covered including the upper side and the lower side, and the outer shape in a flatly developed state is a substantially rectangular shape. The airbag 45 includes an inner side wall portion 45a arranged on the wearer M side and an outer wall portion 45b arranged on the outer side, with substantially the same outer shape, and the inner side wall portion 45a and the outer wall portion 45b are provided. It is made into a bag shape by connecting the outer peripheral edges with each other. In the airbag 45, the inner side wall portion 45a is made of a material having a lower elongation than the outer wall portion 45b, and the inner side wall portion 45a constitutes the expansion suppressing means. Specifically, in the case of the embodiment, the inner side wall portion 45a is composed of two layers of the same base material as the base material constituting the outer wall portion 45b, and has a lower elongation than the outer wall portion 45b. Has been done.

In the airbag 45 having such a configuration, since the outer wall portion 45b is more easily stretched than the inner side wall portion 45a when expanded, the airbag 45 compares the outer wall portion 45b with the inner side wall portion 45a. It expands so as to be greatly curved in the front-back and up-down directions (see FIGS. 16 and 17). That is, in such an airbag 45, since the bending of the inner side wall portion 45a in the vertical direction when the expansion is completed is suppressed, the protection main body portion 47 expands so as to separate the lower end 47a side from the protection target portion. It is possible to accurately suppress the opening and placement. Therefore, as shown in FIG. 17, the protective main body portion 47 can accurately cover the outside of the protected target portion (femoral trochanteric portion TP). In the embodiment, the inner side wall portion 45a has a lower elongation than the outer wall portion 45b by stacking two base materials constituting the outer wall portion 45b, but the material for forming the inner side wall portion is the embodiment. It is not limited to the form. For example, the inner side wall portion may be composed of a woven fabric made of another material having a lower elongation than the outer wall portion, or may be woven from fibers having a higher fineness than the outer wall portion as the same material as the outer wall portion. It may be composed of a base cloth or a base cloth woven at a higher density than the outer wall portion. Also in FIGS. 16 and 17, the outer cover portion is omitted.

Furthermore, as the airbag 50, the one having the configuration shown in FIGS. 18 to 20 may be used. Similar to the above-mentioned airbags 10, 35, 45, the airbag 50 extends downward from the mounting side portion 51 arranged in the area wound around the pelvic MP when the expansion is completed and the mounting side portion 51 when the expansion is completed. It is configured to include two protective main body portions 52 arranged in such a manner. The protective main body 52 is formed so as to extend downward from the mounting side portion 51 while extending outward from the mounting side portion 51 in a state where the airbag 50 is spread flat, and the femur as a protection target portion at the time of mounting. The outer shape around the trochanter portion TP can be widely covered including the upper side and the lower side, and the outer shape in a flatly developed state is a substantially rectangular shape. Specifically, also in the airbag 50, the protective main body portion 52 is configured to cover the side (outside) from the pelvic MP to the lower trochanter UP when attached (see FIG. 20). The airbag 50 is configured to include an inner side wall portion 50a arranged on the wearer M side and an outer wall portion 50b arranged on the outer side. Then, in this airbag 50, the binding sites 54 that are connected to each other by pinching the inner side wall portion 50a are continuously arranged along the vertical direction in the mounted state on the inner side wall portion 50a of each protection main body portion 52. The binding site 54 constitutes a means for suppressing expansion. The binding site 54 is disposed at least in the outer region of the upper site of the femoral trochanteric portion TP, and in the case of the embodiment, as shown in FIGS. It is arranged over the entire area. Specifically, the binding site 54 is formed at one position that is substantially the center of the protection main body portion 52 on the front-rear direction side. The connecting portion 54 is provided with a tack 55 along the vertical direction on the inner side wall portion 50a so as to reduce the width dimension on the front-rear direction side, and the portion of the tack 55 is sewn (bonded) substantially along the vertical direction. By that, it is formed.

In the airbag 50 having such a configuration, the airbag 50 is arranged substantially along the vertical direction, and the coupling portion 54 as an expansion suppressing means configured like a reinforcing rib by stacking a part of the inner side wall portion 50a in two layers. Therefore, the rigidity of the inner side wall portion 50a can be partially increased. Further, when the airbag 50 is inflated, the portion near the binding portion 54 is less likely to extend as compared with the inner side wall portion 50a and the outer wall portion 50b, so that the protection main body portion 52 separates the lower end 52a side from the protection target portion. It is possible to accurately suppress the expansion and arrangement. Therefore, as shown in FIG. 20, the protective main body portion 52 can accurately cover the outside of the protected target portion (femoral trochanteric portion TP). In the embodiment, the coupling portion 54 as the expansion suppressing means is arranged over substantially the entire upper and lower parts of the protection main body portion 52, but the coupling portion is the expansion on the lower end 52a side of the protection main body portion 52. Since it is only necessary to secure the rigidity that can suppress the opening, if it is arranged in the region covering the outside of at least the upper part of the femoral trochanteric part TP (that is, the part from the pelvic MP to the femoral trochanteric part TP). Often, it may be configured not to be arranged on the lower end side of the protection main body portion (the area covering the side of the UP under the trochanter). Further, in the embodiment, the binding site 54 is formed at one location substantially at the center of the front and rear of the protection main body portion 52, but may be configured to be juxtaposed at a plurality of locations on the front-rear direction side.

In the wearing air bag device S of the embodiment, the femur TB of the wearer M is provided by the two protective main body portions 14, 37, 37A, 37B, 47, 52 of the air bags 10, 35, 35A, 35B, 45, 50. Since the vicinity of the base (femoral trochanteric part TP) can be stably protected, the wearer M can prevent the femur TB from being fractured due to a fall, which is preferably used for elderly people. be able to.

In the embodiment, as the wearing airbag device S, 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 flatly deployed state inside the outer cover portion, but of course, the airbag may be stored in the outer cover portion in a folded state.

10 ... Airbag, 12 ... Mounting side part, 14 (14L, 14R) ... Protective body part, 14c ... Lower end, 17 ... Folding part (expansion suppressing means), 20 ... Airbag configuration, 20a ... Inner side wall part , 20b ... Outer wall part, 22 (22L, 22R) ... Protective body component part, 23 ... Folded part, 24 ... Overlapping part, 35, 35A, 35B ... Airbag, 35a ... Inner side wall part, 35b ... Outer wall part , 36 ... Mounting side part, 37, 37A, 37B ... Protective body, 37a ... Lower end, 38, 38A, 38B ... Protruding area (expansion suppressing means), 39, 39A ... Tack, 45 ... Airbag, 45a ... Inside Wall part (expansion suppressing means), 45b ... outer wall part, 46 ... mounting side part, 47 ... protective body part, 47a ... lower end, 50 ... airbag, 50a ... inner side wall part, 50b ... outer wall part, 51 ... Wearing side part, 52 ... protection body part, 52a ... lower end, 54 ... connecting part (expansion suppressing means), M ... wearer, MW ... waist, MP ... pelvis, TB ... femoral bone, TP ... femoral trochantery part (Protected area), S ... Wearing airbag device.

Claims (6)

A wearing airbag device that can protect the wearer's waist.
It has a bag shape made of a flexible sheet body and is configured to be attached to the wearer around the pelvis, and an expansion gas is allowed to flow into the inside to allow the wearer's left and right femurs to flow. An inflatable airbag is provided to cover the outside of the protected area consisting of the trochanter.
The airbag
The attachment side site placed in the area wrapped around the pelvis when the expansion is completed,
When the expansion is completed, the two protective main bodies are arranged so as to extend downward from the mounting side portion and cover the outside of each protected portion.
An expansion suppressing means capable of suppressing expansion of each protection main body portion at the time of completion of expansion so that the lower end side is separated from the protection target portion.
A worn airbag device characterized by being equipped with. Each of the airbags has substantially the same outer shape, and has an airbag configuration in which the peripheral edges of the inner side wall portion arranged on the wearer side and the outer wall portion arranged on the outer side are connected to each other. Composed of the body,
The protective main body portion is vertically deployed on the one end edge side of each of the protective main body portions on the left-right direction side in the protective main body configuration portion of the airbag configuration so as to be overlapped with the overlapped portion. It is configured by forming a folded portion substantially along the direction and connecting the upper end side and the lower end side of the folded portion to the overlapped portion side.
The worn airbag device according to claim 1, wherein the expansion suppressing means is composed of the folded-back portion and the overlapped portion. The airbag is configured to include an inner side wall portion arranged on the wearer side and an outer wall portion arranged on the outer side.
When the expansion is completed, the protective main body portion is configured to be able to cover the outside of the region including the upper side and the lower side of the femoral trochanteric portion.
On the outer wall side of the protective main body portion, a protruding region that partially protrudes outward when expansion is completed is at least a region covering the outside of the upper portion of the femoral trochanter portion in the mounted state. , It is configured to be continuously arranged substantially along the vertical direction,
The worn airbag device according to claim 1, wherein the protruding region constitutes the expansion suppressing means. The protruding region is provided with a partial tack on the outer wall portion, so that the film length on the front-rear side of the outer wall portion is set to be larger than the film length on the front-rear direction side of the inner side wall portion. The worn airbag device according to claim 3, wherein the airbag device is configured by the above method. The airbag is configured to have an inner side wall portion arranged on the wearer side and an outer wall portion arranged on the outer side.
The worn airbag device according to claim 1, wherein the inner side wall portion is made of a material having a lower elongation than the outer wall portion as the expansion suppressing means. The airbag is configured to have an inner side wall portion arranged on the wearer side and an outer wall portion arranged on the outer side.
When the expansion is completed, the protective main body portion is configured to be able to cover the outside of the region including the upper side and the lower side of the femoral trochanteric portion.
On the inner side wall side of the protective main body portion, a binding site that is connected to each other by pinching the inner side wall portion at a portion separated in the left-right direction is at least a portion above the femoral trochanter portion in the mounted state. In the area covering the outside of the above, continuously arranged substantially along the vertical direction,
The worn airbag device according to claim 1, wherein the binding site constitutes the expansion suppressing means.

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