Inflator for airbag and human body protection device using same

Abstract

A human body protection device according to an embodiment of the present disclosure comprises: an airbag which inflates by receiving compressed gas; a gas cartridge for storing compressed gas to be supplied to the airbag; and a plurality of opening and closing units coupled to the gas cartridge and the airbag, the plurality of opening and closing units simultaneously supplying the compressed gas from the gas cartridge into the airbag according to an airbag inflation signal.

Description

Inflator for airbag and human body protection device using the same

[0001] The present disclosure relates to an inflator for an airbag and a human body protection device using the same, and more particularly, to an inflator for an airbag that can rapidly inflate an airbag in a short time when a user falls, and a human body protection device using the same.

[0002] Airbags can be used to protect objects or people from collisions, falls, and falls.

[0003] Conventional inflators include a sealed gas cartridge that stores gas internally, and an opening that opens the sealed gas cartridge by piercing it with a pin. However, even with conventional inflators, the airbag cannot be fully inflated before a falling user hits the ground.

[0004] In order to solve the above-described problems, the present disclosure aims to provide an inflator and a human body protection device capable of instantly inflating an airbag.

[0005] The present disclosure provides an inflator and a human body protection device that can increase the discharge rate and discharge speed of compressed gas of a gas cartridge by connecting a plurality of openings and closing parts to a large-capacity gas cartridge.

[0006] The present disclosure can provide an inflator and a human body protection device that can inflate an airbag more quickly by installing a gas cartridge and an opening / closing part inside the airbag than when installed outside the airbag.

[0007] An embodiment of the present disclosure may provide a human body protection device including an airbag that expands by receiving compressed gas; a gas cartridge that stores the compressed gas supplied to the airbag; and a plurality of openings coupled to the gas cartridge and coupled to the airbag, wherein the plurality of openings simultaneously supply the compressed gas of the gas cartridge to the airbag in response to an airbag inflation signal.

[0008] In an embodiment of the present disclosure, the plurality of openings may include a first opening and a second opening, which are respectively coupled to opposite ends of the gas cartridge.

[0009] In an embodiment of the present disclosure, the gas cartridge has a cylindrical shape, and the first and second opening and closing parts can be coupled to both sides of the cylindrical shape.

[0010] In an embodiment of the present disclosure, the plurality of openings and closing parts and the gas cartridge may be provided inside the airbag.

[0011] In an embodiment of the present disclosure, each of the plurality of openings and closing parts may include an opening and closing body discharge hole formed to discharge the compressed gas toward the inside of the airbag.

[0012] In an embodiment of the present disclosure, the plurality of openings and closing parts can discharge the compressed gas at different times after receiving the airbag inflation signal.

[0013] In an embodiment of the present disclosure, the plurality of openings and closing parts can discharge the compressed gas at different injection speeds or different injection amounts after receiving the airbag inflation signal.

[0014] The present disclosure provides an effect in which an airbag can be sufficiently inflated before a falling user collides with the ground, thereby preventing the user from being injured by ground impact.

[0015] Figure 1 illustrates the operating state of the human body protection device of the present disclosure.

[0016] Figure 2 illustrates the expansion state of the human body protection device when the user falls.

[0017] Figure 3 illustrates a configuration diagram of a human body protection device of the present disclosure.

[0018] FIG. 4 illustrates the front and rear of a human body protection device according to one embodiment of the present disclosure in a state before expansion.

[0019] FIG. 5 illustrates the front and rear of a human body protection device according to one embodiment of the present disclosure in an expanded state.

[0020] FIG. 6 illustrates a cross-section of a human body protection device according to one embodiment of the present disclosure in an expanded state.

[0021] FIG. 7 is a perspective view of an inflator according to one embodiment of the present disclosure.

[0022] FIG. 8 is a cross-sectional view of an inflator connected to an airbag according to one embodiment of the present disclosure.

[0023] FIG. 9 is a cross-sectional view of an inflator connected to a plurality of airbags according to one embodiment of the present disclosure.

[0024] FIG. 10 illustrates examples of discharging compressed gas in various directions from multiple openings according to one embodiment of the present disclosure.

[0025] Figure 11 is a partial cross-sectional view of the inflator.

[0026] Figure 12 is a perspective view of the opening / closing valve.

[0027] Figure 13 is an assembly diagram of an inflator according to one embodiment of the present disclosure.

[0028] FIG. 14 illustrates the front and rear of a human body protection device according to another embodiment of the present disclosure in a pre-inflation state.

[0029] FIG. 15 illustrates the front and rear of a human body protection device according to another embodiment of the present disclosure in an expanded state.

[0030] FIG. 16 illustrates a cross-section of a human body protection device according to another embodiment of the present disclosure in an expanded state.

[0031] Fig. 17 is an example of a combination of an inflator and an airbag according to another embodiment of the present disclosure.

[0032] FIG. 18 illustrates a method of combining an inflator and an airbag according to another embodiment of the present disclosure.

[0033] FIG. 19 is an example of a human body protection device in which an inflator is installed inside an airbag according to another embodiment of the present disclosure.

[0034] Figure 20 is a cross-section taken along the AA' line of Figure 19, before and after inflation of the airbag by an inflator installed inside.

[0035] Figure 21 is a cross-section of BB' of Figure 19 before and after inflation of the airbag by an inflator installed inside.

[0036] FIG. 22 is an example of an inflator installed inside an airbag according to another embodiment of the present disclosure.

[0037] Any specific structural or functional descriptions of embodiments according to the concept of the present disclosure disclosed in this specification are merely illustrative for the purpose of explaining embodiments according to the concept of the present disclosure, and embodiments according to the concept of the present disclosure may be implemented in various forms and are not limited to the embodiments described in this specification.

[0038] Embodiments according to the concept of the present disclosure may have various modifications and may take various forms, and thus embodiments are illustrated in the drawings and described in detail in the present specification. However, this is not intended to limit embodiments according to the concept of the present disclosure to specific disclosed forms, but includes all modifications, equivalents, or alternatives included in the spirit and technical scope of the present disclosure.

[0039] Although terms such as first or second may be used to describe various components, the components should not be limited by the terms. The terms are only intended to distinguish one component from another; for example, without departing from the scope of the invention, a first component may be referred to as a second component, and similarly, a second component may also be referred to as a first component.

[0040] When it is said that a component is "connected to" or "connected to" another component, it should be understood that it may be directly connected or connected to that other component, but that there may be other components in between. Conversely, when it is said that a component is "directly connected to" or "directly connected to" another component, it should be understood that there are no other components in between. Other expressions that describe the relationship between components, such as "between," "immediately between," or "adjacent to," and "directly adjacent to," should be interpreted similarly.

[0041] The technical terms used herein are only used to describe specific embodiments and are not intended to limit the present disclosure. The singular expressions include plural expressions unless the context clearly indicates otherwise. In this specification, it should be understood that the terms "comprises" or "has" specify the presence of a feature, number, step, operation, component, part, or combination thereof described in this specification, but do not exclude in advance the possibility of the presence or addition of one or more other features, numbers, steps, operations, components, parts, or combinations thereof.

[0042] Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art to which the technology disclosed herein belongs, unless specifically defined otherwise herein. Terms defined in commonly used dictionaries should be interpreted to have a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or overly formal sense unless explicitly defined herein.

[0043] The suffixes "module" and "part" for components used in this specification are given or used interchangeably only for the convenience of writing the specification, and do not have distinct meanings or roles in themselves, and may mean a functional or structural combination of hardware for performing a method according to an embodiment of the present disclosure or software capable of driving the hardware.

[0044] Referring to the attached drawings below, an inflator for an airbag of the present disclosure and a human body protection device using the same are described.

[0045] Figure 1 illustrates the operating state of the human body protection device of the present disclosure. Figure 2 illustrates the expansion state of the human body protection device when a user falls. Figure 3 illustrates a configuration diagram of the human body protection device of the present disclosure.

[0046] A human body protection device (100) may include an outer shell (200), an airbag (300) located inside the outer shell (200), and an inflator (400) capable of inflating the airbag (300).

[0047] Referring to FIG. 1, a user can perform work while wearing or covering a body protection device (100) on his or her body, and the body protection device (100) can inflate when it detects danger to protect the user's body from danger.

[0048] Referring to FIG. 2, the human body protection device (100) can protect the user's body by inflating before colliding with the ground due to a fall or drop of the user working at a height. In addition, the human body protection device (100) can detect the possibility of a collision with an external object and inflating before the collision to protect the user's body.

[0049] The outer shell (200) forms the exterior of the human body protection device (100) before expansion, and may have various exterior shapes such as clothing, harness, and belt that can be worn on the user's body.

[0050] The outer shell (200) may be made of a material that is harder than the airbag (300) and stronger than the airbag (300) due to external friction or impact. The outer shell (200) may be made of a fabric material that does not stretch due to external force. The airbag (300) may be made of a material that is softer than the outer shell (200), may be made of a material that stretches due to external force, and may be made of a resin material or a fabric material.

[0051] The outer shell (200) may include an inner shell space (210) capable of storing an airbag (300) before inflation. The inner shell space (210) may be provided with an outer shell fixing member (not shown) capable of fixing the airbag (300) before inflation on the inner surface of the inner shell space (210).

[0052] The outer shell (200) may include a front outer shell (200a) that covers the user's neck and the front of the body, and a rear outer shell (200b) that covers the back of the user's body.

[0053] The outer shell (200) may have various structures depending on the inflation state of the airbag (300).

[0054] In various embodiments, when the inflated airbag (300) has a larger volume than the inner space of the outer shell (210), the inflated airbag (300) may not be exposed to the outside of the outer shell (200). In this case, the outer shell (200) may include an outer shell expansion portion (220a, 220b) that expands the volume of the inner space of the outer shell (210) corresponding to the volume of the inflated airbag (300). The outer shell expansion portion (220a, 220b) is located on the inside of the outer shell (200) before the airbag (300) is inflated, but is exposed to the outside of the outer shell (200) after the airbag (300) is inflated, thereby expanding the volume of the inner space of the outer shell (210).

[0055] In various embodiments, when the inflated airbag (300) has a volume smaller than or equal to the volume of the inner space of the outer shell (210), the inflated airbag (300) is not exposed to the outside of the outer shell, and the outer shell (200) may be double-sewn at the seams between the outer shells (200) to prevent them from bursting due to the instantaneous expansion of the airbag (300).

[0056] In various embodiments, if the inflated airbag (300) has a larger volume than the inner space of the outer shell (210), the inflated airbag (300) may be exposed to the outside of the outer shell (200). In this case, the outer shell (200) may have a quick-burst zipper or Velcro fastening portion to adjust the position at which the inflated airbag (300) is exposed to the outside.

[0057] The airbag (300) is provided in a fixed state, accommodated in the inner space (210) of the outer shell before inflation.

[0058] The airbag (300) can be inflated by an inflator (400). Specifically, the airbag (300) can be inflated by receiving compressed gas stored in a gas cartridge (410) through the operation of the inflator (400).

[0059] As described above, the inflated airbag (300) can be inflated only within the inner space (210) of the outer shell expanded by the outer shell expansion portions (220a, 220b), or can be inflated only within the inner space (210) of the outer shell without the outer shell expansion portions (220a, 220b), or can be inflated by protruding so as to be exposed to the outside of the outer shell (200).

[0060] The airbag (300) may include a front airbag (300a) that protects the user's head, neck, shoulders, and front part of the body (chest, stomach), and a rear airbag (300b) that protects the back part of the user's body (back, hips).

[0061] The front airbag (300a) is provided in the internal space of the front shell (200a) prior to inflation. The front airbag (300a) may inflate from the inside to the outside of the front shell (200a) or inflate only from the inside. The front airbag (300a) may have an internal space (310a) filled with compressed gas.

[0062] The rear airbag (300b) is provided in the interior space of the rear outer shell (200b) prior to inflation. The front airbag (300a) may inflate from the interior to the exterior of the front outer shell (200a) or inflate only from the interior. The rear airbag (300b) may have a front airbag interior space (310b) filled with compressed gas.

[0063] Referring to FIG. 3, a human body protection device (100) according to an embodiment of the present disclosure may include an airbag (300), an inflator (400), a processor (110), an acceleration sensor (120), an angular velocity sensor (130), a memory (140), and a communication unit (150). Not all of these components are essential components of the human body protection device, and the device may be implemented with fewer or more components.

[0064] The processor (110) is electrically connected to the inflator (400), acceleration sensor (120), angular velocity sensor (130), memory (140), and communication unit (150), and can transmit and receive data signals with each component, calculate data, and control each component.

[0065] The processor (110) can receive data sensed by at least one of an acceleration sensor (120) and an angular velocity sensor (130), process the sensed data based on a program for determining whether an airbag is inflated stored in a memory (140), or determine whether airbag inflation is necessary based on the sensed data, and transmit an airbag inflation signal to the inflator (400).

[0066] The inflator (400) can open the opening / closing part (420) described later in response to a received airbag inflation signal to supply compressed gas stored in the gas cartridge (410) to the airbag (300).

[0067] Airbags (300) may be provided in one or more configurations to protect various parts of the body. The airbags (300) can be directly inflated by compressed gas injection. Since the airbags (300) are spaces into which gas is injected, they can be filled with compressed gas released from a gas cartridge (410).

[0068] The acceleration sensor (120) can be obtained by measuring the acceleration of the human body. Specifically, the acceleration sensor (120) can be obtained by measuring the acceleration of the human body along the longitudinal axis, y-axis, and z-axis.

[0069] The angular velocity sensor (130) can be obtained by measuring the angular velocity of the human body. Specifically, the angular velocity sensor (130) can be obtained by measuring the pitch, roll, and yaw angular velocities of the human body.

[0070] The communication unit (150) can transmit an airbag expansion signal or a signal regarding a user's fall / collision / dropping to the outside when the airbag (300) is inflated.

[0071] FIG. 4 illustrates the front and rear views of a human body protection device according to one embodiment of the present disclosure in a pre-inflation state. FIG. 5 illustrates the front and rear views of a human body protection device according to one embodiment of the present disclosure in a post-inflation state. FIG. 6 illustrates a cross-section of a human body protection device according to one embodiment of the present disclosure in a state during inflation. FIG. 7 is a perspective view of an inflator according to one embodiment of the present disclosure. FIG. 8 is a cross-sectional view of an inflator according to one embodiment of the present disclosure connected to one airbag. FIG. 9 is a cross-sectional view of an inflator according to one embodiment of the present disclosure connected to multiple airbags. FIG. 10 illustrates examples of discharging compressed gas in various directions from multiple openings and closings according to one embodiment of the present disclosure. FIG. 11 is a partial cross-sectional view of an inflator. FIG. 12 is a perspective view of an opening and closing valve. FIG. 13 is an assembled state diagram of an inflator according to one embodiment of the present disclosure.

[0072] An inflator (400) according to one embodiment is a device that operates to open a gas cartridge (410) by receiving an airbag inflation signal and supplies compressed gas inside the opened gas cartridge (410) to the airbag (300) to inflate the airbag (300).

[0073] An inflator (400) according to one embodiment is installed on the outer surface of the outer shell (200) and can supply compressed gas to an airbag (300) located inside the outer shell (200). Alternatively, the inflator (400) can be installed on the outer surface of the airbag (300) and supply compressed gas to the airbag (300). Alternatively, the inflator (400) can supply compressed gas to the airbag (300) through a hose (not shown), or can be directly connected to the airbag (300) and supply compressed gas.

[0074] An inflator (400) according to one embodiment may be configured with one or more front inflators (400a-l, 400a-2) for supplying compressed gas to a front airbag (300a), and one or more rear inflators (400b-1, 400b-2) for supplying compressed gas to a rear airbag (300b). By providing an inflator for each airbag, the inflation speed of the airbag can be increased. In addition, by connecting a plurality of inflators to an airbag, the inflation speed of the airbag can be increased.

[0075] An inflator (400) according to one embodiment may include a gas cartridge (410) and an opening / closing portion (420) for opening and closing the gas cartridge (410). Alternatively, an inflator (400) according to one embodiment may include a gas cartridge (410) and a plurality of opening / closing portions (420-1, 420-2) connected to the gas cartridge (410).

[0076] For example, the plurality of openings (420-1, 420-2) may be configured with a first opening (420-1) connected to one side of the gas cartridge (410) and a second opening (420-2) connected to the other side of the gas cartridge (410). However, this is not limited thereto, and the plurality of openings may be configured with three, four, five, etc.

[0077] By connecting multiple openings (420-1, 420-2) to one gas cartridge (410), the discharge amount or discharge speed of the compressed gas inside the gas cartridge (410) can be controlled, and the inflation speed of the airbag can be increased.

[0078] The gas cartridge (410) may have cartridge opening holes (411) corresponding to the number of openings (420). The gas cartridge (410) may have a first cartridge opening hole (411-1) to which a first opening / closing part (420-1) can be coupled, and a second cartridge opening hole (411-2) to which a second opening / closing part (420-2) can be coupled.

[0079] The opening / closing part (420) can be detachably coupled to the cartridge opening hole (411) of the gas cartridge (410), and the cartridge opening hole (411) can be opened or closed by the operation of the opening / closing part (420). The gas cartridge (410) opened by the opening / closing part (420) can supply compressed gas to the airbag to inflate the airbag (300).

[0080] The first cartridge opening hole (411-1) and the second cartridge opening hole (411-2) may be provided at both ends of the gas cartridge (410). The first and second cartridge opening holes (411-1, 411-2) may be formed at both ends in the longitudinal direction of the gas cartridge (410). The first and second cartridge opening holes (411-1, 411-2) may be arranged to face each other.

[0081] The gas cartridge (410) is composed of one or a combination of two or more of carbon dioxide, nitrogen, oxygen, etc., and can store compressed gas compressed at high pressure in the internal space of the cartridge (412).

[0082] The gas cartridge (410) may be formed of a metal material such as iron, aluminum, magnesium, etc. Alternatively, the gas cartridge (410) may be composed of a metal or non-metal liner (413) and a composite (414) formed by wrapping the periphery of the liner (413) with carbon fiber.

[0083] The gas cartridge (410) has a cylindrical shape, and first and second openings (420-1, 420-2) can be combined on both sides of the cylindrical shape.

[0084] The opening / closing unit (420) opens / closes the gas cartridge (410) according to the airbag inflation signal of the processor (110), and can supply compressed gas to the airbag (300) through the opening / closing body discharge hole (436) described later to inflate the airbag (300).

[0085] The opening / closing portion (420) can be directly connected to the outer surface of the airbag (300), or can be connected to the outer surface of the outer shell (200) so as to penetrate the directly overlapping outer shell (200) and the airbag (300) to supply compressed gas into the interior of the airbag (300). In this case, the discharge hole of the opening / closing portion (420) can be connected to the airbag hole (301) and the outer shell hole (201).

[0086] As illustrated in FIG. 8, when a plurality of openings (420-1, 420-2) are combined with a single gas cartridge (410), the plurality of openings (420-1, 420-2) can be combined with a single airbag (300) to supply compressed gas to the single airbag (300) through the respective opening / closing body discharge holes (436-1, 436-2) of the plurality of openings (420-1, 420-2).

[0087] As illustrated in FIG. 9, when a plurality of opening / closing parts (420-1, 420-2) are combined with a single gas cartridge (410), the plurality of opening / closing parts (420-1, 420-2) can be combined with different airbags (300-1, 300-2) to supply the compressed gas inside a single gas cartridge (410) to different airbags (300) through their respective opening / closing body discharge holes (436-1, 436-2). The plurality of different airbags (300-1, 300-2) can be respectively positioned in different outer shells (200-1, 200-2), or can be positioned inside a single outer shell (not illustrated).

[0088] When operated by an expansion signal, a plurality of openings (420-1, 420-2) coupled to one gas cartridge (410) may have different injection amounts of compressed gas, different injection speeds of compressed gas, different injection timings of compressed gas, and / or different injection directions of compressed gas.

[0089] The plurality of openings (420-1, 420-2) can each receive an airbag inflation signal (SI, S2) from the processor (110) and operate individually to discharge the compressed gas inside the gas cartridge (410) to the outside. In this case, the plurality of openings (420-1, 420-2) can each receive an airbag inflation signal (SI, S2) through signal transmission lines (630-1, 630-2) individually connected to the processor (110).

[0090] Alternatively, the plurality of openings (420-1, 420-2) may receive the same airbag inflation signal from the processor (110) (S3) and operate simultaneously to discharge the compressed gas inside the gas cartridge (410) to the outside. In this case, the plurality of openings (420-1, 420-2) may receive the same airbag inflation signal (S3) through a signal transmission line (630-3) that is connected together to the processor (110).

[0091] For example, a plurality of openings (420-1, 420-2) coupled to one gas cartridge (410) can adjust at least one of the cross-sectional area and length of the flow path from the inside of the gas cartridge (410) to the opening body discharge hole (436-1, 436-2) of each opening / closing part (420-1, 420-2) differently to adjust the injection amount or injection speed of the compressed gas differently.

[0092] For example, a plurality of opening / closing parts (420-1, 420-2) combined with a single gas cartridge (410) can have different injection points of compressed gas by receiving expansion signals transmitted at different points in time from the processor (110) through a plurality of driving parts (600-1, 600-2).

[0093] Alternatively, even if the plurality of opening / closing units (420-1, 420-2) receive expansion signals transmitted simultaneously from the processor (110) through the plurality of driving units (600-1, 600-2), the plurality of driving units (600-1, 600-2) may operate at different times, thereby having different injection times of compressed gases. Here, the plurality of driving units (600-1, 600-2) may control the operating times by controlling the explosion times of the gunpowder.

[0094] For example, a plurality of opening / closing parts (420-1, 420-2) combined in one gas cartridge (410) can have the injection direction of compressed gas in different directions by forming the opening / closing body discharge holes (436) in different directions.

[0095] As illustrated in Fig. 10, when multiple openings (420-1, 420-2) are combined into one gas cartridge (410), the injection direction (E1, E2) of the compressed gas discharged from each opening can vary.

[0096] The compressed gas discharged from the plurality of openings (420-1, 420-2) can be discharged in parallel in the same direction as in FIG. 10(a), can be discharged obliquely toward the center of the gas cartridge in the same direction as in FIG. 10(b), can be discharged obliquely away from the center of the gas cartridge in the same direction as in FIG. 10(c), can be discharged in parallel in the opposite direction as in FIG. 10(d), can be discharged obliquely toward the center of the gas cartridge in the opposite direction as in FIG. 10(e), and can be discharged obliquely away from the center of the gas cartridge in the opposite direction as in FIG. 10(f).

[0097] Hereinafter, the description will be based on the first opening among the multiple openings, but the description of the first opening can also be applied to the remaining openings. For convenience of explanation, when describing FIGS. 11 to 13 below, the first opening will be referred to as the opening.

[0098] Referring to FIG. 11, the opening / closing part (420) may include an opening / closing body (430), a body hollow part (432), a valve fastening hole (433), a driving fastening hole (434), and an opening / closing body discharge hole (436).

[0099] The opening / closing body (430) can form the exterior of the opening / closing part (420). The opening / closing body (430) can be formed of a metal material or a reinforced plastic material to prevent damage by the high-pressure gas of the gas cartridge (410).

[0100] The exterior of the opening / closing body (430) may have a shape that is elongated in the vertical direction and may have a fixed body coupling surface (430a) formed flat on the side. The opening / closing body (430) may be coupled to the fixed body (440). The fixed body (440) may be coupled to the fixed body coupling surface (430a) using a fixing member (440a). The fixed body (440) may be configured as a plate-shaped rectangular parallelepiped.

[0101] The opening / closing body discharge hole (436) may be formed in the fixed body joining surface (430a). In addition, a fixed body discharge hole (440b) communicating with the opening / closing body discharge hole (436) may be formed in the fixed body (440). The opening / closing body discharge hole (436) is a portion through which the compressed gas of the gas cartridge (410) is discharged to the outside through the body cavity (432).

[0102] The body hollow (432) is formed inside the opening / closing body (430). The body hollow (432) connects the valve fastening hole (433), the driving fastening hole (434), and the opening / closing body discharge hole (436) to each other. The body hollow (432) connects the valve fastening hole (433) and the driving fastening hole (434) that face each other to each other, and the opening / closing body discharge hole (436) is connected to the body hollow (432) located between the valve fastening hole (433) and the driving fastening hole (434).

[0103] The valve fastening hole (433) is the part where the opening / closing valve (500) described later is fastened.

[0104] The drive fastening hole (434) is the part where the drive unit (600) described later is fastened.

[0105] An inflator (400) according to one embodiment may include an opening / closing valve (500) installed between a gas cartridge (410) and an opening / closing unit (420), and a driving unit (600) that drives the opening / closing valve (460).

[0106] The opening / closing valve (500) can be detachably or integrally coupled to the opening / closing body (430). In addition, the opening / closing valve (500) can be detachably or integrally coupled to the gas cartridge (410). The opening / closing body (430) can be coupled to one end of the opening / closing valve (500), and the gas cartridge (410) can be coupled to the other end.

[0107] The opening / closing valve (500) can be inserted into and coupled to the valve fastening hole (433) of the opening / closing body (430). In addition, the opening / closing valve (500) can be inserted into and coupled to the cartridge opening hole (411) of the gas cartridge (410). The opening / closing valve (500) can be coupled to the valve fastening hole (433) or the cartridge opening hole (411) by various means, such as screw coupling, welding, or adhesive.

[0108] The on-off valve (500) may be a check valve, and may be, for example, a Schrader valve. When an external force greater than the internal pressure of the gas cartridge (410) is applied to the inside of the gas cartridge (410), the on-off valve (500) opens to discharge the compressed gas of the gas cartridge (410) to the outside, and when the external force is removed, the valve closes to store the compressed gas.

[0109] The opening / closing valve (500) may include a valve body (510), a valve body extension portion (511) extending radially to have a diameter larger than the valve body (510), an upper insert portion (512) extending upward from the valve body extension portion (511) and coupled to a valve fastening hole (433), and a lower insert portion (513) extending downward from the valve body extension portion (511) and coupled to a cartridge opening hole (411).

[0110] The valve body extension (511) can protrude horizontally with a larger diameter than the upper insertion portion (512) and the lower insertion portion (513). When the upper insertion portion (512) and the lower insertion portion (513) are respectively coupled to the valve fastening hole (433) and the cartridge opening hole (411), the opening / closing body (430) and the gas cartridge (410) can be separated from each other by the valve body extension portion (511) so that they do not come into contact with each other.

[0111] In addition, the opening / closing valve (500) may include a valve through-hole (530) penetrating the valve body (510), a valve pin (520) that opens and closes the valve through-hole (530), and a valve spring (540) that provides elastic restoring force to the valve pin (520).

[0112] The valve penetration hole (530) extends vertically so as to penetrate both the upper insertion part (512) extending upwardly and the lower insertion part (513) extending downwardly. In addition, the valve penetration hole (530) is connected to the valve discharge hole (530a) formed on the side of the upper insertion part (512). The valve discharge hole (530a) may be formed in two pieces facing the upper insertion part (512).

[0113] In addition, the valve penetration hole (530) is formed on the upper part (top surface) of the upper insertion part (512) and is connected to the valve upper hole (530b) penetrated by one end of the valve pin (520). In addition, the valve penetration hole (530) is formed on the lower part (bottom surface) of the lower insertion part (512) and is connected to the valve lower hole (530c) penetrated by the other end of the valve pin (520).

[0114] The valve pin (520) penetrates through all of the valve upper hole (530b), the valve through hole (530), and the valve lower hole (530c), and is provided to be movable within the valve upper hole (530b), the valve through hole (530), and the valve lower hole (530c). The valve pin (520) closes the valve lower hole (530c) before receiving an external force, thereby closing the valve through hole (530), and can open the valve lower hole (530c) and the valve through hole (530) by moving downward upon receiving an external force.

[0115] The valve pin (520) may include a valve pin rod (520a) penetrating the valve upper hole (530b), the valve through hole (530), the valve lower hole (530c), a lower valve pin extension (520c) provided at the lower portion of the valve pin rod (520a), and an upper valve pin extension (520b) provided at the upper portion of the valve pin rod (520b).

[0116] The lower valve pin extension (520c) can be detachably coupled to the valve pin rod (520a) or formed integrally with it, can have a diameter larger than the valve pin rod (520a), and can open and close the valve lower hole (530c) from the outside of the valve body. Furthermore, the lower valve pin extension (520c) can have a sealing member (513a), such as an O-ring, on the outer diameter for sealing when closing the valve lower hole (530c). In this case, the sealing member (513a) can be located between the lower valve pin extension (520c) and the valve lower hole (530c).

[0117] The upper valve pin extension (520b) can be detachably connected to the valve pin rod (520a). The upper valve pin extension (520b) can prevent the valve spring (540) penetrated by the valve pin rod (520a) from being separated from the valve pin rod (520a). The upper valve pin extension (520b) can be detachably connected to the valve pin rod (520a) by screw connection.

[0118] The spring (540) can be prevented from being separated from the valve pin rod (520a). The upper valve pin extension (520b) can be detachably connected to the valve pin rod (520a) by screw connection.

[0119] The valve spring (540) provides elastic restoring force to allow the valve pin (520) to close the valve lower hole (530c) and the valve through hole (530), and can provide elastic restoring force to the extent that the valve pin (520) can move by an external force.

[0120] The valve spring (540) may be penetrated by the valve pin rod (520a). The upper end of the valve spring (540) may be supported by the upper valve pin extension (520b). The lower end of the valve spring (540) may be supported by the upper end surface (512a) of the upper insertion portion (512), by the inner upper end surface (513a) facing the lower end surface of the lower insertion portion (513), or by a support surface (not shown) extending inward from the inner circumferential surface of the valve penetration hole (530).

[0121] In this case, when an external force is applied to the upper valve pin extension (520b) or the upper end of the valve pin rod (520a), the valve pin rod (520a) moves downward, and the lower valve pin extension (520c), which was closing the valve lower hole (530c), opens the valve lower hole (530c). Since the lower insertion part (513) is inserted into the gas cartridge (410), the compressed gas inside the gas cartridge (410) flows into the valve penetration hole (530) through the valve lower hole (513) and is discharged through the valve discharge hole (530a).

[0122] The discharged compressed gas passes through the valve fastening hole (433) and the body hollow (432) of the opening / closing body (430) and is discharged into the opening / closing body discharge hole (436). The compressed gas discharged from the opening / closing body (430) is supplied to the air bag (300) connected to the opening / closing body discharge hole (436) and expands the air bag (300).

[0123] Referring again to FIG. 11, the driving unit (600) can open or close the opening / closing valve (500). The driving unit (600) may be an electric motor or solenoid, or may be a gunpowder-type actuator that detonates with an electric signal.

[0124] The driving unit (600) may include a driving unit body (610), a driving unit insertion part (640) extending from the driving unit body (610) and fastened to a driving fastening hole (434), a signal transmission line (630) transmitting an expansion signal to the driving unit body (610), and a driving piston (620) that can be extended in length by entering and exiting one end of the driving unit insertion part (640).

[0125] An explosive material (EP) capable of being detonated by an electric signal may be included within at least one of the drive body (610) and the drive insert (640). The electric signal may be an airbag inflation signal transmitted from the processor (110).

[0126] The drive insertion part (640) can be inserted into the drive fastening hole (434) and fixedly and detachably connected, and can be screw-connected. The signal transmission line (630) can transmit an electric signal corresponding to the expansion signal of the processor (110) to the explosive material (EP) to induce an explosion.

[0127] The drive piston (620) can be extended from the drive insertion portion (640) by an expansion signal, thereby extending its length. In other words, the drive piston (620) is maintained in a state in which it is inserted into the inside of the drive insertion portion (640), and is then pulled out to the outside of the drive insertion portion (640) by being pushed by the explosive force of the gunpowder (EP).

[0128] The driving piston (620) moves outward from the driving insertion portion (640) and applies an external force to the upper portion of the valve pin (520). In this case, the valve pin (520) that has received the external force opens the valve penetration hole (530) and the valve lower hole (530c), and the opening / closing valve (500) opens so that compressed gas can be supplied to the airbag through the opening / closing body discharge hole (436).

[0129] The body hollow (432) of the opening / closing body (430) may include a first body hollow (432a) connected to the valve fastening hole (433), a second body hollow (432b) connected to the drive fastening hole (434), and a third body hollow (432c) connecting the first body hollow (432a) and the second body hollow (432b). The first body hollow (432a) may be connected to the opening / closing body discharge hole (436).

[0130] The first body hollow (432a) may have a larger diameter (cross-sectional area) than the second body hollow (432b). In addition, the second body hollow (432b) may have a larger diameter (cross-sectional area) than the third body hollow (432c).

[0131] The opening / closing body (430) may include an extension piston (450) that is movable inside the body cavity (432).

[0132] The extension piston (450) receives an external force from the drive piston (620) drawn out from the drive unit (600) and moves toward the on-off valve (500) inside the body hollow (432), and transmits the external force to one end of the valve pin (520) of the on-off valve (460) to open the on-off valve (500).

[0133] The extension piston (450) can move inside the first body hollow (432a) and the third body hollow (432c) and can include an extension piston protrusion (450a) having an inner diameter almost identical to that of the third body hollow (432c), an extension piston body portion (450b) integrally connected to the extension piston protrusion (450a) and moving inside the second body hollow (432b), and a sealing member (450c) provided on the outer periphery of the extension piston body portion (450b) to seal between the second body hollow (432b).

[0134] The extended piston body portion (450b) has a larger diameter than the extended piston protrusion portion (450a), so that even if the extended piston body portion (450b) moves by the driving piston (620) of the driving portion (600), the movement can be restricted by the third body hollow portion (432c).

[0135] The present disclosure prevents compressed gas from flowing into the second body hollow (432b) by the extended piston protrusion (450a) penetrating the third body hollow (432c) even when the opening / closing valve (500) is opened by the extended piston (450) and compressed gas flows into the first body hollow (432a), and even if some compressed gas flows in, it can be prevented from reaching the driving unit (600) by the sealing member (450c).

[0136] The opening / closing part (420) of the human body protection device (100) is directly connected to the outer shell (200) and the airbag (300) so that the compressed gas discharged from the opening / closing part (420) can be directly supplied to the airbag internal space (310). Here, the fixed body (440) detachably attached to the opening / closing body (430) can be composed of first and second fixed bodies (440-1, 440-2). The outer shell (200) and the airbag (300) can be arranged between the first and second fixed bodies (440-1, 440-2), and the first and second fixed bodies (440-1, 440-2) can be connected to each other to fix the outer shell (200) and the airbag (300), and the fixed body (440) can be detachably fixed to the opening / closing body (430). In various embodiments, the outer shell (200) and the airbag (300) may be placed between the fixed body (440) and the open / close body (430), and the fixed body (440) and the open / close body (430) may be fastened to each other to fix the outer shell (200) and the airbag (300). In this case, the outer shell hole (201) and the airbag hole (301) are in communication with the fixed body discharge hole (440b) and the open / close body discharge hole (436).

[0137] In various embodiments, the opening / closing part (420) of the human body protection device (100) can be directly connected only to the airbag (300) to directly supply the compressed gas discharged from the opening / closing part (420) to the airbag internal space (310). Here, the fixed body (440) detachably attachable to the opening / closing body (430) can be composed of first and second fixed bodies (440-1, 440-2). The airbag (300) can be placed between the first and second fixed bodies (440-1, 440-2), and the first and second fixed bodies (440-1, 440-2) can be connected to each other to secure the airbag (300), and the fixed body (440) can be detachably attached to the opening / closing body (430). In various embodiments, the airbag (300) may be placed between a fixed body (440) and an open / close body (430), and the fixed body (440) and the open / close body (430) may be fastened to each other to secure the airbag (300). In this case, the airbag hole (301) communicates with the fixed body discharge hole (440b) and the open / close body discharge hole (436).

[0138] In various embodiments, the opening / closing portion (420) of the inflator (400) may be indirectly connected to the airbag (300) via a hose (not shown). Here, one end of the hose (not shown) is coupled to be fastened to the opening / closing body discharge hole (436), and the other end of the hose (not shown) is coupled to be fastened to the airbag hole (301).

[0139] The method of connecting the opening / closing part (420) and the airbag allows for the supply of compressed gas to the airbag in a short period of time without reducing the gas discharge speed by directly connecting the opening / closing part (420) to the airbag (300) rather than supplying compressed gas through a hose (not shown).

[0140] The exterior of the opening / closing body (430) may have a triangular prism shape. Specifically, the opening / closing body (430) having a triangular prism shape may include a curved surface (430-1) that is fillet-curved so that both sides of one vertex of the triangle meet in a curved shape and form one side, first and second inclined surfaces (430-2, 430-3) that extend to both sides from the curved surface and correspond to both sides of the triangle and form side surfaces, a first plane (430-4) that corresponds to the remaining side of the triangle and connects between the first and second inclined surfaces and forms one side of the triangular prism, and a second plane (430-5) and a third plane (430-6) that form the upper surface and the lower surface, respectively.

[0141] In this case, the valve fastening hole (433) may be formed on the third plane (430-6), the drive fastening hole (434) may be formed on the second plane (430-5), and the opening / closing body discharge hole (436) may be formed on the first plane (430-4).

[0142] The body hollow body (432) can communicate with the valve fastening hole (433), the drive fastening hole (434), and the opening / closing body discharge hole (436) within the opening / closing body (430). The first plane (430-4) can correspond to the fixed body coupling surface (430a) of the above-described embodiment.

[0143] The fixed body (440) can be detachably fixedly connected to the first plane (430-4) of the opening / closing body (430) using a fixing member (440a). At least one of the outer shell (200) and the airbag (300) can be placed between the fixed body (440) and the opening / closing body (430), and the fixed body (440) and the opening / closing body (430) can be fixedly connected to fix at least one of the outer shell (200) and the airbag (300).

[0144] In addition, in various embodiments, the fixed body (440) may include a first fixed body (440-1), a second fixed body (440-2), and a fixing member (440-3) that can fixally connect the first and second fixed bodies to each other. In this case, at least one of the outer shell (200) and the airbag (300) is disposed between the first fixed body (440-1) and the second fixed body (440-2), and the first fixed body (440-1) and the second fixed body (440-2) are fixed to each other by the fixing member (440-3), thereby fixing at least one of the outer shell (200) and the airbag (300) between the first fixed body (440-1) and the second fixed body (440-2).

[0145] The fixed body (440) may include a fixed body discharge hole (440b) that communicates with the interior of the airbag (300). The fixed body discharge hole (440b) may be formed by inserting a fixed body discharge extension protrusion (440-lb) that extends from a first fixed body discharge hole (440-la) formed in a first fixed body (440-1) to a second fixed body (440-2) so as to penetrate the second fixed body discharge hole (440-la) formed in the second fixed body (440-2).

[0146] The outer shell hole (201) formed in the outer shell and the airbag hole (301) formed in the airbag can be connected to the fixed body discharge hole (440b). The outer shell hole (201) and the airbag hole (301) can be penetrated by the fixed body discharge extension protrusion (440-lb).

[0147] The fixed body (440) is maintained in a state of being installed on the outer shell (200) and the airbag (300), and the opening / closing body (430) can be detachably coupled to the fixed body (440). Through this, after the inflator (400) is used, the opening / closing body (430) can be separated from the fixed body (440), and the driving unit (600) and gas cartridge (410) installed in the opening / closing body (430) can be replaced, so replacement and repair for reuse can be easy.

[0148] The opening / closing body (430) may include a discharge hole extension protrusion (436a) that extends the opening / closing body discharge hole (436) outward from the fixed body coupling surface (430a) corresponding to the first plane (430-4), and an extension protrusion sealing mounting portion (436c) on which a sealing member (436b) positioned around the discharge hole extension protrusion (436a) is mounted. The discharge hole extension protrusion (436a) is inserted into the fixed body discharge hole (440b), and the sealing member (436b) presses the inner surface of the fixed body discharge hole (440b) (or the inner surface of the first fixed body discharge hole (440-la)) to prevent compressed gas from leaking to the outside.

[0149] The description of the human body protection device described above with reference to FIGS. 1 through 13 can also be applied to the configuration of the human body protection device according to other embodiments described below, as long as there is no technical contradiction. The following description focuses on the differences.

[0150] FIG. 14 illustrates the front and rear sides of a human body protection device according to another embodiment of the present disclosure in a state before inflation. FIG. 15 illustrates the front and rear sides of a human body protection device according to another embodiment of the present disclosure in a state after inflation. FIG. 16 illustrates a cross-section of a human body protection device according to another embodiment of the present disclosure in a state during inflation. FIG. 17 illustrates an example of a combination of an inflator and an airbag according to another embodiment of the present disclosure. FIG. 18 illustrates a method of combining an inflator and an airbag according to another embodiment of the present disclosure. FIG. 19 illustrates an example of a human body protection device in which an inflator is installed inside an airbag according to another embodiment of the present disclosure. FIG. 20 illustrates the AA' cross-section of FIG. 19 before and after inflation of an airbag by an inflator installed inside. FIG. 21 illustrates the BB' cross-section of FIG. 19 before and after inflation of an airbag by an inflator installed inside. FIG. 22 illustrates the inflator installed inside an airbag according to another embodiment of the present disclosure.

[0151] An inflator (400) according to another embodiment is a device that operates to open a gas cartridge (410) by receiving an airbag inflation signal, and supplies compressed gas inside the opened gas cartridge (410) to the airbag (300) to inflate the airbag (300).

[0152] An inflator (400) according to another embodiment is installed inside the airbag (300) and can supply compressed gas to the internal space (310) of the airbag. Therefore, the inflator (400) cannot be seen from the outside of the human body protection device (100).

[0153] Since the inflator (400) is installed inside the airbag (300), compressed gas can be supplied to the airbag (300) more quickly than when it is installed outside the airbag (300).

[0154] An inflator (400) according to another embodiment may include a gas cartridge (410) and an opening / closing portion (420) for opening / closing the gas cartridge (410). Alternatively, an inflator (400) according to another embodiment may include a gas cartridge (410) and a plurality of opening / closing portions (420-1, 420-2) connected to the gas cartridge (410). That is, both the gas cartridge (410) and one or more opening / closing portions (420-1, 420-2) connected to the gas cartridge (410) may be positioned inside the airbag (300).

[0155] As illustrated in FIGS. 16 and 17, the coupled opening / closing portion (420) and the gas cartridge (410) may be positioned inside the airbag (300). The opening / closing portion (420) may be directly coupled to the inner surface of the airbag (300). In various embodiments, the opening / closing portion (420) may be coupled to the inner surface of the airbag (300) so as to directly penetrate the overlapping outer skin (200) and the airbag (300), thereby directly supplying compressed gas from inside the airbag (300) to the interior of the airbag (300). In this case, the opening / closing body discharge hole (436) of the opening / closing portion (420) is positioned in the airbag interior space (310). Although not illustrated, a plurality of inflators (400) may be positioned inside one airbag.

[0156] Referring to FIGS. 18 to 21, the opening / closing part (420) may include an opening / closing body (430), a body hollow (432), a valve fastening hole (433), a driving fastening hole (434), and an opening / closing body discharge hole (436).

[0157] The exterior of the opening / closing body (430) may have a shape that is elongated in the vertical direction and may have a fixed body coupling surface (430a) formed flat on the side. The opening / closing body (430) may be coupled to the fixed body (440). The fixed body (440) may be coupled to the fixed body coupling surface (430a) using a fixing member (440a). The fixed body (440) may be configured as a plate-shaped rectangular parallelepiped.

[0158] The opening / closing body discharge hole (436) is not formed on the fixed body joining surface (430a). The opening / closing body discharge hole (436) may be formed on the side of the opening / closing body (430) other than the fixed body joining surface (430a). The opening / closing body discharge hole (436) may be formed on a portion where one or two or more surfaces of the curved surface (431-1), the first and second inclined surfaces (431-2, 431-3), the second plane (431-5), and the third plane (431-6) of the opening / closing body (430) overlap.

[0159] The opening / closing body discharge hole (436) may be formed on the side of the opening / closing body (430) opposite to the fixed body joining surface (430a). The opening / closing body discharge hole (436) may be exposed to the airbag internal space (310) and communicate with the airbag internal space (310). The opening / closing body discharge hole (436) is a portion through which the compressed gas of the gas cartridge (410) is discharged to the outside through the body cavity (432).

[0160] In various embodiments, at least one of the outer shell (200) and the airbag (300) may be placed between the fixed body (440) and the opening / closing body (430), and the fixed body (440) and the opening / closing body (430) may be fastened to each other to fix at least one of the outer shell (200) and the airbag (300). In this case, the outer shell (200) and the airbag (300) may not have an outer shell hole (201) and an airbag hole (301).

[0161] In various embodiments, the fixed body (440) detachably attached to the opening / closing body (430) may be composed of first and second fixed bodies (440-1, 440-2). At least one of the outer shell (200) and the airbag (300) may be disposed between the first and second fixed bodies (440-1, 440-2), and the first and second fixed bodies (440-1, 440-2) may be fastened to each other to secure at least one of the outer shell (200) and the airbag (300), and the fixed body (440) may be detachably attached to the opening / closing body (430). In this case, the outer shell (200) and the airbag (300) may not have an outer shell hole (201) and an airbag hole (301).

[0162] Figures 17 to 21 are examples in which only the airbag (300) is fixed to the opening / closing body (430) and the outer shell (200) is not fixed, and Figure 22 is an example in which both the airbag (300) and the outer shell (200) are fixed to the opening / closing body (430).

[0163] The body hollow (432) is formed inside the opening / closing body (430). The body hollow (432) communicates with the valve fastening hole (433), the driving fastening hole (434), and the opening / closing body discharge hole (436). The body hollow (432) communicates with the valve fastening hole (433) and the driving fastening hole (434) which face each other, and the body hollow (432) located between the valve fastening hole (433) and the driving fastening hole (434) is connected to the opening / closing body discharge hole (436).

[0164] An inflator (400) according to another embodiment may include an opening / closing valve (500) installed between a gas cartridge (410) and an opening / closing unit (420), and a driving unit (600) that drives the opening / closing valve (460).

[0165] The opening / closing valve (500) can be detachably or integrally coupled to the opening / closing body (430). In addition, the opening / closing valve (500) can be detachably or integrally coupled to the gas cartridge (410). The opening / closing body (430) can be coupled to one end of the opening / closing valve (500), and the gas cartridge (410) can be coupled to the other end.

[0166] The driving unit (600) may include a driving unit body (610), a driving unit insertion part (640) extending from the driving unit body (610) and fastened to a driving fastening hole (434), a signal transmission line (630) transmitting an expansion signal to the driving unit body (610), and a driving piston (620) that can be extended in length by entering and exiting one end of the driving unit insertion part (640).

[0167] In this case, the driving unit (600) can be electrically connected to the processor (110) by a signal transmission line (630). The signal transmission line (630) can pass through the airbag (300) from the inside to the outside.

[0168] Referring to Fig. 20, the opening / closing portion (420) is formed on the inside of the opening / closing body (430) and may include a signal line hollow (437) through which a signal transmission line (630) passes, a sealing agent (438) sealing the signal line hollow (437), and an opening / closing body signal hole (439) formed at one end of the signal line hollow (437). The opening / closing body signal hole (439) may be formed on the fixed body coupling surface (430a).

[0169] The signal transmission line (630) connected to the driving unit (600) passes through the signal line hollow (437) and is exposed to the outside of the opening / closing body signal hole (439). By filling the inside of the signal line hollow (437) with a sealant (438), the internal gas of the airbag (300) is restricted from passing through the signal line hollow (437).

[0170] The fixed body (440) is coupled to the fixed body coupling surface (430a) and fixes the airbag (300) therebetween, and the signal transmission line (630) can pass through the airbag signal hole (302) and the fixed body signal hole (440c) of the airbag (300) and be connected to the outside of the airbag (300). In this case, the signal transmission line (630) can be connected to the processor (110) through the outer shell internal space (210).

[0171] Referring to FIG. 21, the fixed body (440) is coupled to the fixed body coupling surface (430a) and fixes the airbag (300) and the outer shell (200) therebetween, and the signal transmission line (630) can pass through the airbag signal hole (302), the fixed body signal hole (440c), and the outer shell signal hole (202) and be connected to the outside of the outer shell (200). In this case, the signal transmission line (630) is connected to the processor (110) through the outside of the outer shell (200).

[0172] While this disclosure has been described with reference to the embodiments illustrated in the drawings, these are merely exemplary, and those skilled in the art will understand that various modifications and equivalent embodiments are possible. Accordingly, the true scope of technical protection of this disclosure should be determined by the technical spirit of the appended claims.

Claims

1. An airbag that expands by receiving compressed gas; A gas cartridge storing the compressed gas supplied to the airbag; and A plurality of openings and closing parts coupled to the gas cartridge and coupled to the air bag, A human body protection device in which the plurality of openings simultaneously supply the compressed gas of the gas cartridge to the airbag by an airbag inflation signal.

2. In paragraph 1, A human body protection device, wherein the plurality of openings include a first opening and closing portion and a second opening and closing portion respectively coupled to both ends of the gas cartridge.

3. In paragraph 2, A human body protection device, wherein the gas cartridge has a cylindrical shape, and the first and second opening and closing parts are coupled to both sides of the cylindrical shape.

4. In paragraph 1, A human body protection device, wherein the plurality of openings and closing parts and the gas cartridge are provided inside the airbag.

5. In paragraph 4, A human body protection device, wherein each of the plurality of openings and closing parts includes an opening and closing body discharge hole formed to discharge the compressed gas toward the inside of the airbag.

6. In paragraph 1, A human body protection device in which the plurality of openings discharge the compressed gas at different times after receiving the airbag inflation signal.

7. In paragraph 1, A human body protection device in which the plurality of openings and closing parts discharge the compressed gas at different injection speeds or different injection amounts after receiving the airbag inflation signal.

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