KR101834781B1 - Fall protection airbags - Google Patents

Abstract

A fall preventive airbag is disclosed in which the fall preventive airbag is worn on the waist of the user and an airbag outer skin receiving the gasbag from the airbag gas injecting device, an airbag outer skin that receives the airbag inner skin inward, Wherein the airbag inner wall has a longitudinally corresponding inflatable portion extending in the up-and-down direction and a plurality of inflatable portions extending in the lateral direction from the longitudinally corresponding inflatable portion, And may include a laterally corresponding expansion portion.

Description

{Fall Protection Airbags}

The present invention relates to a fall-protected air bag.

Generally, elderly people or patients who are uncomfortable to move are much weaker than healthy young people, so they are dangerous places such as stairs, sloping places such as hills, and winter ice roads, as well as living rooms, Even in a relatively safe place such as a flat plain, a falling accident that loses its balance when walking directly on foot can occur frequently.

To prevent such a situation, equipment that protects the elderly from external shocks is being studied. Conventionally, garments having an air layer have been proposed. However, there is a need to ensure a certain level of fit and activity in the clothes of the elderly living in everyday life. Particularly, since the user feels a foreign body feeling and an uncomfortable wearing feeling due to the air layer provided in the clothes, it is not practical.

The background technology of the present application is disclosed in Korean Patent Laid-Open Publication No. 2006-7003685 (published on November 11, 2006).

It is an object of the present invention to provide a fall-protected airbag that can be inflated in a short time so as to have a sufficient pressure and an effective shape to protect the human body from falling objects.

It is an object of the present invention to provide a fall-protecting airbag capable of protecting the circumference of the pelvis from impacts.

It should be understood, however, that the technical scope of the embodiments of the present invention is not limited to the above-described technical problems, and other technical problems may exist.

As a technical means for achieving the above technical object, a fall-protecting airbag according to an embodiment of the present invention is an airbag inflator for inflating a gas from an airbag gas injecting apparatus, an airbag sheath for accommodating the airbag inner- Wherein the airbag belt is worn on the back of the user and the airbag sheath is mounted on a back side of a user, the airbag inner skin including a longitudinally corresponding inflatable portion extending in the vertical direction and a longitudinally corresponding inflatable portion extending in the lateral direction from the longitudinal corresponding inflatable portion And a plurality of the transversely corresponding expanding portions provided at intervals in the vertical direction.

According to an embodiment of the present invention, the airbag sheath may have a smaller expansion ratio than the expansion ratio of the airbag inner skin so that the pressure formed when the airbag inner foam is inflated is increased.

According to one embodiment of the present application, the airbag sheath can be inflated in the form of wrapping the pelvis of the user upon inflation.

According to one embodiment of the invention, the airbag belt can guide the airbag sheath to be inflated in the form of wrapping the user's pelvis.

According to one embodiment of the present invention, the airbag sheath may be provided with a fabric material capable of limiting the maximum expansion volume.

According to one embodiment of the present invention, the airbag inner skin may be made of urethane.

According to one embodiment of the present invention, the airbag sheath includes a zipper, and the airbag inner skin can be inserted into the airbag sheath through the zipper.

According to one embodiment of the invention, an airbag gas injection device is connected to one end of the longitudinal corresponding expansion portion, and the airbag sheath may include a receiving portion in which one end of the longitudinal corresponding expansion portion and the airbag gas injection device are accommodated .

According to another aspect of the present invention, there is provided a fall prevention airbag comprising: an airbag gas injection device; an airbag inner skin to which gas is injected from the airbag gas injection device; an airbag outer skin that houses the airbag inner skin inward; An airbag apparatus comprising: an airbag belt having an outer skin mounted on a back side of a user, the airbag inner skin including: a longitudinally corresponding inflator extending in a vertical direction; And a transversely corresponding expanding portion extending diagonally and laterally from the longitudinally corresponding expanding portion and having a plurality of vertically spaced apart corresponding expanding portions.

According to another embodiment of the present invention, the airbag gas injection device includes a sensor unit for sensing an external impact, a trigger unit for triggering a sphere in response to detection of the sensor unit, a movement path for the triggered sphere to move, And a cartridge including a compressed gas for inflating the airbag endothelium, wherein, by the striking of the ball of the triggered sphere, the cartridge breaks the cover and the compressed gas .

The above-described task solution is merely exemplary and should not be construed as limiting the present disclosure. In addition to the exemplary embodiments described above, there may be additional embodiments in the drawings and the detailed description of the invention.

According to the above-mentioned problem solving means of the present invention, the airbag inner skin is provided so as to have the longitudinal corresponding expansion portion and the laterally corresponding expansion portion branched therefrom, thereby quickly reaching the sufficient pressure to protect the human body from the fall before the fall And it can be provided with an effective expansion type that can cover the pelvis and the like when inflated.

Further, according to the above-mentioned task solution of the present invention, it is possible to provide a fall-protecting airbag that has an outer skin that accommodates an expanding endothelium to prevent damage of the endothelium upon occurrence of an impact due to fall, .

According to the above-mentioned problem solving means of the present invention, it is possible to provide a fall-protecting airbag in which the airbag belt can be guided to inflate the airbag outer skin in the form of wrapping the pelvis so as to protect the circumference of the pelvis from impact.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1A is a view showing an inflated state of an airbag inner skin of a fall-protected airbag according to an embodiment of the present invention. FIG.
1B is a view showing an inflated state of an airbag inner skin of a fall-protected airbag according to an embodiment of the present invention.
2 is a view showing an airbag cover of a fall-protected airbag according to an embodiment of the present invention.
FIG. 3 is a perspective view of a fall protection airbag according to an embodiment of the present invention. FIG.
4 is a block diagram of an air bag gas injection apparatus according to one embodiment of the present invention.
5 is a cross-sectional view of an airbag gas injection apparatus according to one embodiment of the present application.
6 is a perspective view of an air bag gas injection apparatus according to an embodiment of the present invention;
7A is a cross-sectional view of an air bag gas injection apparatus showing a fixed state of a trigger unit according to an embodiment of the present invention.
FIG. 7B is a cross-sectional view of the air bag gas injecting apparatus showing the unlocked state of the trigger unit according to the embodiment of the present invention; FIG.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings so that those skilled in the art can easily carry out the present invention. It should be understood, however, that the present invention may be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. In the drawings, the same reference numbers are used throughout the specification to refer to the same or like parts.

Throughout this specification, when a part is referred to as being "connected" to another part, it is not limited to a case where it is "directly connected" but also includes the case where it is "electrically connected" do.

It will be appreciated that throughout the specification it will be understood that when a member is located on another member "top", "top", "under", "bottom" But also the case where there is another member between the two members as well as the case where they are in contact with each other.

Throughout this specification, when an element is referred to as "including " an element, it is understood that the element may include other elements as well, without departing from the other elements unless specifically stated otherwise.

The present invention relates to a fall-protected air bag. When the airbag gas injection device 10 senses a fall, the fall-back protective airbag inflates the compressed gas to inflate it before the user touches the floor surface, thereby alleviating the shock caused by the fall. The fall-protecting airbag can be worn on the waist to protect the waist and the pelvis when falling.

The fall protection airbag of the present disclosure may include an airbag inner skin 110, an airbag skin 210, and an airbag belt 220.

FIG. 1A is an illustration of an inflated airbag inner skin in accordance with one embodiment of the present application, and FIG. 1B is an illustration of an inflated airbag inner skin in accordance with one embodiment of the present disclosure.

Referring to FIG. 1A, the airbag inner sheet 110 is configured to be infused with an inflation gas. 1A shows an airbag inner skin 110 that has been inflated by an airbag gas injection device 10. FIG. Illustratively, the airbag < / RTI > inner skin 110 can be inflated through the compressed gas exiting the airbag gas injection device 10. [ The airbag inner cover 110 may be made of a vinyl material (e.g., a urethane material). The compressed gas can be discharged from the cartridge of the air bag gas injecting apparatus 10, and compressed gas of low temperature and high pressure can be discharged from the cartridge. Therefore, the airbag inner sheet 110 can be formed of a urethane material that is not damaged by the compressed gas at low temperature and high pressure. The urethane material not only can withstand the low temperature and high pressure of the compressed gas but also has a sufficient elongation, so that the volume of the airbag inner sheet 110 can be expanded corresponding to the compressed gas to be injected. In addition to the urethane material, the airbag inner skin 110 may be formed of a material having a predetermined elongation without being damaged by low temperature and high pressure.

1B shows the airbag inner skin 110 before it is inflated. Referring to FIG. 1B, the airbag inner sheet 110 may include a longitudinally corresponding expansion portion 111 extending in the vertical direction. In this case, the up-and-down direction may mean that the 12 o'clock direction is upward and the 6 o'clock direction is downward with reference to Fig. 1B. The vertical direction in the present application may be understood to mean a direction corresponding to the extending direction of the vertebra when the human body is worn. Terms set in relation to this direction are used in the same or similar concept throughout this specification. An airbag gas injection device 10 may be connected to one end of the longitudinally corresponding expansion portion 111. Illustratively, as shown in FIG. 1A, the air bag gas injection apparatus 10 may be connected to the upper end of the longitudinal corresponding expansion portion 111. The airbag inner sheet 110 is passed through the compressed gas injected from the airbag gas injection device 10 connected to the longitudinally corresponding expansion portion 111 and the longitudinally corresponding expansion portion 111 and the laterally corresponding expansion portion 112 Can be inflated.

The airbag inner skin 110 may include a plurality of laterally corresponding inflatable portions 112 extending diagonally from the longitudinally corresponding inflatable portion 111 in the lateral direction and spaced apart in the vertical direction. The transversely corresponding inflatable portion 112 may be branched in the left or right direction orthogonal to the longitudinally corresponding inflatable portion 111 and extended in each direction as shown in Fig. 1B. The left and right directions refer to 9 o'clock direction as the left direction and 3 o'clock direction as the right direction with reference to Fig. 1B. That is, the transversely corresponding expansion portion 112 may be formed by diverging and extending leftward or rightward with respect to the longitudinally corresponding expansion portion 111.

Further, a plurality of the transversely corresponding inflatable portions 112 may be provided at intervals in the vertical direction. Illustratively, referring to FIG. 1B, three transversely corresponding inflatable portions 112 may be formed adjacent to each other at an interval in the vertical direction, but are not limited thereto.

According to one embodiment of the invention, the airbag inner envelope 110 includes a longitudinally corresponding expansion portion 111 and a laterally corresponding expansion portion 112 that is branched at the longitudinally corresponding expansion portion 111, And the pressure of the air bag inner skin 110 can be constantly formed. Illustratively, when the airbag inner sheet 110 is formed as a non-branched integral body, the central region may be excessively inflated relative to the edge region. This may mean that the pressure of the air bag inner skin 110 is concentrated in the central region. For example, when the edge area of the airbag inner skin 110 at the time of falling touches the bottom surface first, the edge area does not have sufficient pressure to absorb the impact, so that the safety of the user can not be guaranteed. Even when the central region of the airbag inner skin 110 first falls on the floor surface during the fall, the pressure inside the airbag inner skin 110 and the pressure caused by the weight of the user are added, .

1A, the airbag inner sheet 110 includes the longitudinally corresponding expanding portion 111 and the transversely corresponding expanding portion 112 that are vertically and laterally branched, so that the thickness of the airbag inner sheet 110 The volume can be limited to a predetermined level or less, and the time required for forming sufficient pressure to protect from the fall can be greatly shortened.

According to one embodiment of the invention, the perimeter or edge of the airbag inner skin 110 may be adhered (both sides) by ultrasonic welding. The airbag inner skin 110 is adhered by the ultrasonic welding so that the adhesive portion can be prevented from being damaged by the compressed gas injected at low temperature and high pressure.

2 is a view showing an airbag cover according to an embodiment of the present invention;

Referring to FIG. 2, the airbag sheath 210 may be mounted to the user together with the airbag belt 220. The airbag belt 220 may be worn on the user's waist so that the airbag cover 210 is mounted on the back of the user. In addition, the airbag belt 220 may include a Velcro 221 at both ends as shown in FIG. The airbag belt 220 can wrap around the waist and can be worn on the waist of the user through the male and female coupling of the pair of Velcro 221.

The airbag cover 210 can house the airbag inner cover 110 inside. The airbag cover 210 can accommodate the airbag inner cover 110 into a space formed therein. The airbag outer cover 210 accommodates the airbag inner cover 110 inside, thereby preventing the airbag inner cover 110 from being damaged by the floor during the fall. Illustratively, if the airbag skin 210 is not provided, the airbag inner skin 110 may be exposed to the outside, so that the airbag inner skin 110 may be damaged during a fall due to a sharp object on the floor, have. Therefore, even if an impact occurs, the airbag inner skin 110 expanded in the compressed state and the airbag outer skin 210 accommodating and protecting the airbag inner skin 110 are provided, So that the impact can be absorbed or mitigated.

Referring to FIG. 2, the airbag cover 210 includes a zipper 211, and the airbag inner cover 110 can be inserted into the airbag cover 210 through the zipper 211. Illustratively, the airbag inner envelope 110 can be detached from the airbag envelope 210 when the compressed gas in the cartridge of the connected airbag gas injector device 10 is exhausted. The airbag inflation device 10 can be replaced with a new cartridge and connected to the airbag inner skin 110 and the airbag inner skin 110 can be inserted into the interior of the airbag skin 210 through the zipper 211. [

The airbag sheath 210 may include one end of the longitudinal corresponding expansion portion 111 and a receiving portion 212 in which the airbag gas injection device 10 is received. The housing portion 212 may be formed with a portion of the airbag cover 210 protruding to receive the airbag gas injection device 10 connected to the longitudinal corresponding expansion portion 111 as shown in Fig. Illustratively, the storage portion 212 may be formed at a position corresponding to the user's spine portion when the airbag belt 220 is worn.

The airbag sheath 210 may have a smaller expansion ratio than the expansion ratio of the airbag inner skin 110 so that the pressure formed when the airbag inner skin 110 is inflated is increased. The airbag inner envelope 210 has a smaller expansion ratio than the airbag inner envelope 110 so that the airbag inner envelope 110 is inflated within a volume limit that is limited by the expansion ratio of the airbag envelope 210, The pressure inside the airbag inner sheet 110 may be increased after that, the airbag inner sheet 110 may reach a proper tight state for fall protection. The airbag sheath 210 may be provided with a fabric material capable of limiting the maximum expansion volume. Illustratively, the airbag sheath 210 is provided with a thin fabric material having a low expansion rate, thereby limiting the maximum expansion volume of the airbag inner skin 110. As a result, a high pressure can be rapidly formed inside the airbag inner skin 110 when the compressed gas is injected into the airbag inner skin 110. The high pressure formed in the airbag inner skin 110 can protect the human body during fall and can alleviate the impact applied from the bottom surface.

FIG. 3 is a perspective view of a fall protection airbag according to an embodiment of the present invention. FIG. Referring to FIG. 3, the fall-protecting airbag inflated by the airbag gas injector 10 can protect the user's pelvis. The airbag sheath 210 can be inflated in the form of wrapping the pelvis when inflated. Illustratively, referring to FIG. 3, the airbag sheath 210 may be formed in the form of a curve to surround the pelvis when inflated. For example, the airbag sheath 210 may be manufactured such that the inner side surface has a shorter circumferential length than the outer side surface so that the outer surface of the airbag 210 is curved toward the inner side when inflated. As the airbag sheath 210 is formed in a curved shape, the airbag inner skin 110 can also be bent in the form of a curved line surrounding the pelvis.

Referring back to FIG. 1A, since the airbag inner sheet 110 has a predetermined expansion or contraction ratio, the shape of the airbag 110 during inflation may be difficult to be limited to a desired shape, and the airbag 110 may expand in a straight line. However, as described above, since the airbag cover 220 has a small expansion ratio that restricts the expansion of the airbag inner cover 110 and can be expanded in the form of wrapping the pelvis when inflated, In the form of protection.

The airbag belt 220 can guide the airbag sheath 210 to expand in the form of wrapping the user's pelvis. The airbag belt 220 can guide the airbag sheath 210 to expand adjacent to the pelvis. Since the airbag belt 220 is worn around the waist while guiding the airbag cover 210, the airbag cover 210 can be brought into close contact with the pelvis to effectively protect the pelvis.

Devices for protecting the human body, such as airbags, need to be reliable enough to mitigate or absorb shocks before they are delivered to the human body. For example, it takes 400 to 500 ms for the human body to reach the bottom surface from the time when the air bag gas injecting apparatus senses fall at the time of fall. Therefore, it is preferable that the airbag inflates before 400 ms and sufficient pressure is formed to absorb the impact. According to one embodiment of the present invention, the fall-back protective airbag is constructed by the branched inflating structure of the airbag inner skin 110 described above so that the airbag inflator 110 can be inflated before the impact is transmitted from the moment the airbag- 400ms). ≪ / RTI > Also, it can be expanded while wrapping the pelvis until the impact is transmitted.

Meanwhile, the present invention can provide a fall protection airbag apparatus including a fall-protecting airbag and an airbag gas injecting apparatus according to an embodiment of the present invention described above.

4 is a block diagram of an air bag gas injection apparatus according to one embodiment of the present application, and Fig. 5 is a cross-sectional view of an air bag gas injection apparatus according to an embodiment of the present invention.

The airbag gas injector 400 is configured to inject gas into the airbag inner skin 110 of the fall-back protective airbag. The airbag gas injection device 400 may include a sensor unit 410, a triggering unit 420, an inflator 430, and a cartridge 440.

The sensor unit 410 can sense an external impact. In addition, the sensor unit 410 may include a fall sensor that senses a fall of a human body and generates a fall signal.

The triggering unit 420 may trigger the sphere according to the detection of the sensor unit 410. The triggering unit 420 may include a trigger unit 421, a driving force providing unit 422 and an elastic member 423. The triggering unit 420 may include a trigger unit 421, (450). The trigger unit 421 may selectively secure the sphere 450 to prevent entry of the sphere 450 into the movement path. The driving force providing unit 422 can provide a driving force to the trigger unit 421. [ The driving force providing unit 422 can provide the driving force so that the trigger unit 421 can release the fixing of the sphere 450

FIG. 7A is a cross-sectional view of an air bag gas injecting apparatus showing a fixed state of a trigger unit according to an embodiment of the present invention, and FIG. 7B is a sectional view of an air bag gas injecting apparatus according to an embodiment of the present invention .

Referring to FIG. 7A, the trigger unit 421 supports the sphere 450 so that the sphere 450 can be held fixed to prevent it from entering the movement path 431. On the other hand, when the sensor unit 410 senses fall of the human body, the driving force providing unit 422 provides the driving force to the trigger unit 421, and the trigger unit 421 is driven as shown in FIG. It is possible to release the fixing of the fixing member 450.

The resilient member 423 may remain compressed while the sphere 450 is stationary to provide a triggering force on the sphere 450 upon release of the sphere 450. [ The elastic member 423 may be, but is not limited to, a spring capable of providing an elastic (percussion) force, for example.

The sphere 450 can be released by being driven by the trigger unit 421 and triggered. In addition, the triggering unit 420 can be driven by receiving a power supply corresponding to the fall signal. When the spherical member 450 is released, the spherical member 450 may be triggered by the elastic member 423 to receive the triggering force.

The inflator 430 may include a movement path 431 through which the triggered sphere 450 moves and a ball 432 disposed at the end of the movement path 431. The triggered sphere 450 may move along the movement path 431 to strike the ball 432. The struck hole 432 can break the cover 441 of the cartridge 440 and discharge the compressed gas contained in the cartridge 440. [

The travel path 431 may include a curved path with a predetermined radius of curvature such that the triggered sphere 450 is pivoted. Referring to FIG. 5, the triggered sphere 450 may be swirled along the curved path in the direction of the sphere 450. Illustratively, the triggered sphere 450 may proceed along a U-turn path that advances 180 degrees. The curved path may be a curved path formed such that the tip of the movement path 431 in which the triggered spherical object 450 enters and the end of the movement path 431 in which the ball 432 is disposed are located on the same side. 5, the tip may be a direction in which the ball 450 and the ball 450 including the trigger unit 421, the driving force providing unit 422 and the elastic member 423 are positioned, May be the direction in which the triggered sphere 450 reaches and strikes the ball 432. That is, one end located at 6 o'clock direction of the movement path 431 is referred to as a tip, and one end located at 12 o'clock direction may mean an end as a reference to the movement path 431 of Fig.

On the other hand, the sensor unit 410 may be disposed on the distal end side of the movement path 431, and the cartridge 440 may be disposed on the distal end side of the movement path 431. The curved path of the movement path 431 may be formed by bending with a predetermined radius of curvature such that the sensor part 410 and the cartridge 440 are adjacent to each other.

Cartridge 440 may include a compressed gas to inflate airbag < RTI ID = 0.0 > 110 < / RTI > Referring to FIG. 5, the cartridge 440 is capable of breaking the cover 441 by blowing the ball 432 of the triggered sphere 450 to discharge the compressed gas. The cover 441 can face the pointed portion at the distal end of the ball 432. The cover 441 may be fixed to the connecting portion 434 of the inflator 430 to be described later so as to face the end of the ball 432. The triggered sphere 450 may strike the backside of the ball 432. The cover 441 may be broken by the hole 432 extending in the striking direction of the sphere 450 to discharge the compressed gas.

The inflator 430 may include a support member 433 that supports the ball 432 such that the ball 432 faces the cover 441 in front. Illustratively, the ball support member 433 can be struck back by the triggered sphere 450 to deliver the energy of the sphere 450 to the ball 432. The ball 432 may receive the energy from the support member 433 and advance in the striking direction of the sphere 450 to break the cover 441.

6 is a perspective view of an air bag gas injection apparatus according to an embodiment of the present invention; Referring to FIG. 6, the inflator 430 may include an injection port 435 for directing the compressed gas discharged from the cartridge 440 to the airbag inner film 110. An injection port 435 may be formed between the cover 441 and the cavity 432 and connected to the airbag inner film 110. Illustratively, the inflator 430 may include, but is not limited to, two inlets 435.

The inflator 430 may also include a connection 434 detachably coupled to the cartridge 440 such that the cover 441 is disposed opposite the end of the ball 432. The connection portion 434 may be detachably coupled to the cartridge 440 using various coupling structures such as a screw, a clamp, and a clip.

The air bag gas injection device 400 may include a protective housing 460 that receives the cartridge 440 and the sensor unit 410. The protective housing 460 may receive the cartridge 440 and protect the cartridge 440 from being detached from the connection 434 of the inflator 430 by a fall or other external impact.

It will be understood by those of ordinary skill in the art that the foregoing description of the embodiments is for illustrative purposes and that those skilled in the art can easily modify the invention without departing from the spirit or essential characteristics thereof. It is therefore to be understood that the above-described embodiments are illustrative in all aspects and not restrictive. For example, each component described as a single entity may be distributed and implemented, and components described as being distributed may also be implemented in a combined form.

The scope of the present invention is defined by the appended claims rather than the detailed description, and all changes or modifications derived from the meaning and scope of the claims and their equivalents should be interpreted as being included in the scope of the present invention.

10, 400: air bag gas injection device
110: air bag inner skin
111: longitudinal direction corresponding expansion portion
112: transverse direction expansion portion
210: airbag cover
211: zipper
212:
220: Airbag belt
221: Velcro
410:
420:
421: Trigger unit
422: driving force providing unit
423: elastic member
430: Inflator
431: Movement path
432: The ball
433:
434:
435:
440: Cartridge
441: cover
450: Sphere
460: Protective housing

Claims (18)

A fall-protecting airbag including an airbag inner skin into which inflation gas is injected, an airbag outer skin accommodating the airbag inner skin inside, and an airbag belt worn on the user's waist so that the airbag skin is mounted on the back of the user; And
And an airbag gas injection device mounted so as to be able to inject a gas into the airbag inner skin of the fall-back protection airbag,
Wherein the airbag inner skin includes a longitudinally corresponding inflatable portion extending in the vertical direction and a transversely corresponding inflatable portion extending in the lateral direction from the longitudinally corresponding inflatable portion and having a plurality of spaced apart upwardly and downwardly spaced apart portions,
The airbag gas injection device includes a sensor unit for sensing an external impact, a trigger unit for triggering a sphere in response to detection of the sensor unit, a movement path for the triggered sphere to move, and a ball disposed at an end of the movement path Wherein the cover is broken and the compressed gas is discharged by a blow of the ball of the triggered sphere, the cartridge including a compressor including an inflator including a compressor Protective airbag device. The method according to claim 1,
Wherein the airbag skin has an expansion ratio smaller than an expansion ratio of the airbag inner skin so that a pressure formed when the airbag inner skin expands is increased. The method according to claim 1,
Wherein the airbag envelope is inflated in such a manner as to envelop the user's pelvis when inflated. The method of claim 3,
Wherein the airbag belt guides the airbag sheath to be inflated in the form of wrapping the user's pelvis. The method according to claim 1,
Wherein the airbag sheath is provided with a fabric material capable of limiting a maximum expansion volume. The method according to claim 1,
Wherein the airbag inner skin is made of a urethane material. The method according to claim 1,
Wherein the airbag sheath comprises a zipper portion,
Wherein the airbag inner skin is inserted into the airbag skin through the zipper. The method according to claim 1,
The airbag gas injection device is connected to one end of the longitudinally corresponding expansion portion,
Wherein the airbag sheath comprises one end of the longitudinal corresponding expansion portion and a receiving portion in which the airbag gas injecting device is housed. delete delete The method according to claim 1,
Wherein the pointed portion at the distal end of the ball is opposed to the cover and the ball is triggered to strike the back of the ball. The method according to claim 1,
The inflator includes:
A connection detachably coupled to the cartridge such that the cover is disposed opposite the end of the ball; And
And an injection port formed between the cover and the ball and connected to the airbag inner skin. The method according to claim 1,
The blast unit
A trigger unit for selectively fixing the sphere to prevent entry of the sphere into the movement path;
A driving force providing unit for providing a driving force to the trigger unit; And
And an elastic member that maintains the spherical state in a fixed state so as to provide a triggering force to the spherical body upon releasing the spherical state of the spherical body,
And the ball is released and triggered by the driving of the trigger unit. The method according to claim 1,
The sensor unit includes:
And a fall sensor for detecting a fall of the human body and generating a fall signal,
Wherein the triggering portion is driven by receiving power corresponding to the fall signal. The method according to claim 1,
Wherein the travel path includes a curved path having a predetermined radius of curvature such that the triggered sphere is pivoted. 16. The method of claim 15,
Wherein the curved path is a curved path formed so that a distal end of the movement path on which the spherical ball is introduced and a distal end of the movement path on which the ball is disposed are located on the same side. The method according to claim 1,
Further comprising a protective housing for receiving the cartridge and the sensor unit. 18. The method of claim 17,
Wherein the sensor unit is disposed on a leading end side of the movement path,
Wherein the cartridge is disposed at the distal end side of the movement path,
Wherein the curved path of the movement path is formed by bending with a predetermined radius of curvature such that the sensor portion and the cartridge are adjacent to each other.

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