Wearable airbag
The wearable airbag's innovative design with eccentric tightening means and blocking cover allows for easy size adjustment and smooth deployment, addressing the challenge of internal adjustment devices interfering with the wearer's body.
Patent Information
- Authority / Receiving Office
- US · United States
- Patent Type
- Applications(United States)
- Current Assignee / Owner
- HYUNDAI MOBIS CO LTD
- Filing Date
- 2025-10-22
- Publication Date
- 2026-07-23
AI Technical Summary
Existing wearable airbags face challenges in adjusting size after being worn due to internal adjustment devices that can interfere with the wearer's body during deployment.
A wearable airbag design featuring a main body with eccentrically disposed tightening means, differing tether lengths, and a blocking cover to prevent interference with the cushion, allowing easy size adjustment without disrupting deployment.
Enables convenient and uniform tightening of the airbag around the wearer's neck area, ensuring smooth deployment of the cushion without causing discomfort or interference.
Smart Images
Figure US20260206885A1-D00000_ABST
Abstract
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims priority from and the benefit of Korean Patent Application No. 10-2025-0008070, filed on January 20, 2025, which is hereby incorporated by reference for all purposes as if set forth herein. BACKGROUND1.Field
[0002] Exemplary embodiments of the present disclosure relate to a wearable airbag, and more particularly, to a wearable airbag wearable on a wearer’s body.2.Description of the Related Art
[0003] Wearable airbags tailored to the speed and environment of two-wheeled vehicles, such as electric bicycles, electric kickboards, and motorcycles, which do not have external structures for protecting a passenger, are being sold.
[0004] Such wearable airbags are being developed to allow the selection of a variety of use forms while minimizing interference with a wearer's smooth movement by individually protecting parts of a wearer’s body, such as the head, chest, and pelvis, rather than protecting the entire wearer’s body.
[0005] In general, electric bicycle users wear wearable airbags for head protection, electric kickboard users wear wearable airbags for head and chest protection, and motorcycle users wear wearable airbags for head, chest, and pelvis protection.
[0006] In wearable airbags in the related art, since an adjustment device for adjusting the size of the airbag according to a wearer’s body is located inside the airbag in contact with the wearer’s body instead of being exposed to the outside of the airbag, the size of the airbag is difficult to adjust after the airbag is worn, and the size adjustment device may strike the wearer’s body when the airbag is deployed.
[0007] The background art of the present disclosure is disclosed in Korean Patent Application Laid-Open No. 10-2024-0139418 (published on September 23, 2024 and entitled “Wearable Airbag”).SUMMARY
[0008] Various embodiments are directed to providing a wearable airbag in which a size can be easily adjusted according to a wearer's body without interfering with airbag deployment.
[0009] In a general aspect, a wearable airbag includes: a main body configured to wrap around a neck area of a wearer; a cushion accommodated in the main body, and configured to be inflated by injection of gas from an inflator to be deployed to a head area of the wearer; a first tether accommodated in the main body and coupled to a first side in a longitudinal direction of the main body; a second tether accommodated in the main body, coupled to a second side in the longitudinal direction of the main body, and spaced apart from the first tether; and a tightener rotatably coupled to the main body and connected to the first tether and the second tether, and configured to pull the first tether and the second tether.
[0010] The tightener may be eccentrically disposed at a center of a length of the main body.
[0011] A length of the first tether and a length of the second tether may be different from each other.
[0012] The length of the second tether may be shorter than the length of the first tether.
[0013] The main body may include an inner cover adjacent to the neck area, and an outer cover coupled to the inner cover, disposed to face the inner cover, and coupled to the first tether and the second tether.
[0014] The tightener may include a rotator rotatably coupled to the outer cover, and a lace coupled to the rotator and connected between the first tether and the second tether.
[0015] The rotator may include a dial protruding from the outer cover, and a winding part configured to be wound around with the lace according to a rotation direction of the dial.
[0016] A first portion of the lace may be connected to an end of the first tether, a second portion of the lace facing the first portion may be connected to an end of the second tether, and a third portion of the lace may be disposed between the first portion and the second portion is connected to the winding part.
[0017] The wearable airbag may further include a loop coupled to the outer cover, wherein the lace passes through the loop.
[0018] The wearable airbag may further include a blocking cover coupled to the outer cover and disposed between the cushion and the outer cover to block contact between the first tether, the second tether, and the tightener and the cushion.
[0019] In another general aspect, a wearable airbag system, includes: an inflator; a main body configured to wrap around a neck area of a wearer; a cushion accommodated in the main body; an impact detection sensor; an airbag controller configured to control the inflator to inject gas into the cushion for deployment to a head area of the wearer based on sensing of an impact by the impact detection sensor; a first tether accommodated in the main body and coupled to a first side in a longitudinal direction of the main body; a second tether accommodated in the main body, coupled to a second side in the longitudinal direction of the main body, and spaced apart from the first tether; and a tightener rotatably coupled to the main body and connected to the first tether and the second tether, and configured to pull the first tether and the second tether.
[0020] The tightener may be eccentrically disposed at a center of a length of the main body.
[0021] A length of the first tether and a length of the second tether may be different from each other.
[0022] The length of the second tether may be shorter than the length of the first tether.
[0023] The main body may include an inner cover adjacent to the neck area, and an outer cover coupled to the inner cover, disposed to face the inner cover, and coupled to the first tether and the second tether.
[0024] In the present disclosure, a tightening means is eccentrically disposed at the center of a length of a main body, and a first tether and a second tether connected to the tightening means have different lengths, so that uniform left-right tightening of the main body can be conveniently implemented even when the tightening means is eccentrically located.
[0025] In the present disclosure, the first tether, the second tether, and the tightening means are prevented from interfering with a cushion by a blocking cover, so that the tightening means is easily operated and does not interfere with the deployment of the cushion.BRIEF DESCRIPTION OF THE DRAWINGS
[0026] FIG. 1 is a diagram schematically illustrating a state in which a wearable airbag in accordance with an embodiment of the present disclosure is worn on the neck area of a wearer’s body.
[0027] FIGS. 2 and 3 are cross-sectional views schematically illustrating the wearable airbag in accordance with an embodiment of the present disclosure.
[0028] FIG. 4 is a front view of an inner side of an outer cover in accordance with an embodiment of the present disclosure.
[0029] FIG. 5 is a diagram schematically illustrating an operation state of a tightening means in FIG. 4.
[0030] FIG. 6 is a diagram schematically illustrating a state in which a cushion in accordance with an embodiment of the present disclosure is inflated and deployed.
[0031] FIG. 7 is a cross-sectional diagram schematically illustrating a wearable airbag in accordance with another embodiment of the present disclosure.
[0032] FIG. 8 is a control block diagram of the wearable airbag in accordance with an embodiment of the present disclosure.DETAILED DESCRIPTION
[0033] Hereinafter, embodiments of a wearable airbag in accordance with the present disclosure are described with reference to the accompanying drawings through various exemplary embodiments. In such a process, the thicknesses of lines or the sizes of elements illustrated in the drawings may be exaggerated for the purpose of clarity and convenience of explanation. Terms to be described below are terms defined in consideration of functions thereof in the present disclosure and may be changed according to the intention of a user or an operator, or practice. Accordingly, such terms should be defined based on the disclosure over the present specification.
[0034] FIG. 1 is a diagram schematically illustrating a state in which a wearable airbag in accordance with an embodiment of the present disclosure is worn on the neck area of a wearer’s body, FIGS. 2 and 3 are cross-sectional views schematically illustrating the wearable airbag in accordance with an embodiment of the present disclosure, FIG. 4 is a front view of an inner side of an outer cover in accordance with an embodiment of the present disclosure, FIG. 5 is a diagram schematically illustrating an operation state of a tightening means in FIG. 4, and FIG. 6 is a diagram schematically illustrating a state in which a cushion in accordance with an embodiment of the present disclosure is inflated and deployed, FIG. 8 is a control block diagram of the wearable airbag in accordance with an embodiment of the present disclosure.
[0035] Referring to FIGS. 1 to 6, and 8, the wearable airbag in accordance with an embodiment of the present disclosure includes a main body 100, a cushion 200, a first tether 300, a second tether 400, and a tightening means 500 (e.g., a tightener / fastener), which are described in detail as follows.
[0036] The main body 100 can form a schematic external appearance of the wearable airbag in accordance with the present embodiment, and support the cushion 200, the first tether 300, the second tether 400, and the tightening means 500 as a whole.
[0037] The main body 100 can be provided therein with a space where a part of the cushion 200, the first tether 300, the second tether 400, and the tightening means 500 can be accommodated.
[0038] The main body 100 can be worn on a wearer’s body 10. The main body 100 can be worn on the wearer’s body 10 in a form of wrapping around a neck area 11 of the wearer’s body 10 as a whole.
[0039] The main body 100 can be formed to have a set length to sufficiently wrap around the neck area 11 of the wearer’s body 10, and manufactured using a fabric material, such as cloth, to enable folding.
[0040] The main body 100 in accordance with the present embodiment may be provided with a fastening means 101 (e.g., a tightener / fastener). The fastening means 101 can be provided at both ends in the longitudinal direction of the main body 100. The fastening means 101 can fasten both ends of the main body 100 to maintain the mounting state of the main body 100 mounted on the neck area 11 of the wearer’s body 10 and to prevent the main body 100 from being detached from the neck area 11 of the wearer’s body 10.
[0041] When the main body 100 is worn on the neck area 11 of the wearer’s body 10, both ends of the main body 100 can be located on the front side of the wearer’s body 10. Thus, both ends of the main body 100 on the front side of the wearer’s body 10 can be mutually fastened by the fastening means 101.
[0042] The fastening means 101 in accordance with the present embodiment can be exemplified by a buckle, a magnetic buckle, a zipper, a snap button, a Velcro, or the like.
[0043] The main body 100 in accordance with the present embodiment may be provided with a tear line 100a. The tear line 100a can be formed along the longitudinal direction of the main body 100. The tear line 100a can be formed along one side and the other side in the longitudinal direction of the main body 100 from the center in the longitudinal direction of the main body 100.
[0044] The tear line 100a can be formed to have a length of 70% to 80% of the total length L of the main body 100. The tear line 100a can be located on an upper side (based on FIG. 1) of the main body 100 facing a head area 12 of the wearer’s body 10.
[0045] The main body 100 in accordance with the present embodiment may include an inner cover 110 and an outer cover 120. The inner cover 110 and the outer cover 120 can be formed to have the same size and shape.
[0046] The inner cover 110 can be adjacent to the neck area 11 of the wearer’s body 10. An outer surface of the inner cover 110 can be disposed to face the neck area 11 of the wearer’s body 10.
[0047] The outer cover 120 can be coupled to the inner cover 110. Edges of the inner cover 110 and edges of the outer cover 120 can be fixed to each other through a coupling method such as sewing, bonding, joining, or fusion. The tear line 100a can be formed at the coupling portion between the inner cover 110 and the outer cover 120.
[0048] The outer cover 120 can be disposed to face the inner cover 110. The inner cover 110 can be disposed relatively closer to the neck area 11 of the wearer’s body 10 than the outer cover 120.
[0049] An inner surface of the inner cover 110 and an inner surface of the outer cover 120 can be disposed to face each other. An outer surface of the outer cover 120 can be disposed to face the outside of the wearer’s body 10.
[0050] The cushion 200 can be accommodated in the main body 100. The cushion 200 can be disposed inside the main body 100. The cushion 200 may include the same material as the main body 100. The cushion 200 can be folded and stored inside the main body 100.
[0051] The cushion 200 can be inflated inside the main body 100 by the injection of gas generated from an inflator 20 and deployed outside the main body 100. The cushion 200 can be deployed to the head area 12 of the wearer’s body 10 through the tear line 100a formed in the main body 100. The tear line 100a can be cut by the pressure of the cushion 200 inflated inside the main body 100.
[0052] An outer surface of the cushion 200 can be coated with silicone in order to prevent internal gas from leaking out.
[0053] The cushion 200 in accordance with the present embodiment can be disposed between the inner cover 110 and the outer cover 120.
[0054] The cushion 200 can be deployed to surround the head area 12 of the wearer’s body 10, excluding a facial area, as a whole, thereby protecting the head area 12 of the wearer’s body 10 from external impact.
[0055] The inflator 20 can be accommodated in a housing 30. The inflator 20 and the cushion 200 can be connected via a gas line (not illustrated). The housing 30 can be coupled to the main body 100. The housing 30 can be disposed at the lower center (based on FIG. 1) of the main body 100 and located between the back area and the neck area 11 of the wearer’s body 10.
[0056] The housing 30 may include a plastic material resistant to external impact. The housing 30 can accommodate an airbag controller (e.g., a processor) or airbag control unit (ACU, 40) that controls the operation of the inflator 20 and a battery (41) that supplies power to the airbag control unit (40).
[0057] The airbag control unit (40) can be electrically connected to an impact detection sensor (42) that detects impact. The impact detection sensor (42) can be installed in the main body 100 or the housing 30.
[0058] An impact signal detected by the impact detection sensor (42) is transmitted to the airbag control unit (40), the inflator 20 is operated in response to the control signal from the airbag control unit (40), and gas is injected into the cushion 200, so that the cushion 200 can be inflated.
[0059] The first tether 300 can be accommodated in the main body 100. The first tether 300 can be disposed inside the main body 100. The first tether 300 can be coupled to one side in the longitudinal direction of the main body 100. The first tether 300 may include the same material as the main body 100 and the cushion 200.
[0060] The first tether 300 can be formed in a band shape with a set length. The first tether 300 can be formed to extend along a direction parallel to the longitudinal direction of the main body 100.
[0061] The first tether 300 can be connected to the tightening means 500. The first tether 300 can be connected to a lace 520 of the tightening means 500 to transmit the adjusting force of the tightening means 500 to the main body 100.
[0062] The first tether 300 in accordance with the present embodiment can be coupled to the outer cover 120. The first tether 300 can be coupled to the inner surface of the outer cover 120 facing the inner surface of the inner cover 110. The first tether 300 can be disposed between the outer cover 120 and the cushion 200.
[0063] One end in the longitudinal direction of the first tether 300 can be coupled to one end in the longitudinal direction of the outer cover 120. The first tether 300 can be fixed to the outer cover 120 through a coupling method such as sewing, bonding, joining, or fusion.
[0064] The second tether 400 can be accommodated in the main body 100. The second tether 400 can be disposed inside the main body 100. The second tether 400 can be coupled to the other side in the longitudinal direction of the main body 100. The second tether 400 may include the same material as the main body 100 and the cushion 200.
[0065] The second tether 400 can be formed in a band shape with a set length. The second tether 400 can be formed to extend along a direction parallel to the longitudinal direction of the main body 100.
[0066] The second tether 400 can be spaced apart from the first tether 300. The first tether 300 and the second tether 400 can be spaced apart from each other along the longitudinal direction of the main body 100.
[0067] The second tether 400 can be connected to the tightening means 500. The second tether 400 can be connected to the lace 520 of the tightening means 500 to transmit the adjusting force of the tightening means 500 to the main body 100.
[0068] The second tether 400 in accordance with the present embodiment can be coupled to the outer cover 120. The second tether 400 can be coupled to the inner surface of the outer cover 120 facing the inner surface of the inner cover 110. The second tether 400 can be disposed between the outer cover 120 and the cushion 200.
[0069] One end in the longitudinal direction of the second tether 400 can be coupled to the other end in the longitudinal direction of the outer cover 120. The second tether 400 can be fixed to the outer cover 120 through a coupling method such as sewing, bonding, joining, or fusion.
[0070] A length L1 of the first tether 300 and a length L2 of the second tether 400 in accordance with the present embodiment may be different from each other. Specifically, the length L1 of the first tether 300 parallel to the longitudinal direction of the main body 100 may be different from the length L2 of the second tether 400 parallel to the longitudinal direction of the main body 100.
[0071] For example, the length L2 of the second tether 400 may be shorter than the length L1 of the first tether 300. Specifically, the length L2 of the second tether 400 parallel to the longitudinal direction of the main body 100 may be shorter than the length L1 of the first tether 300 parallel to the longitudinal direction of the main body 100.
[0072] The tightening means 500 can be rotatably coupled to the main body 100. The tightening means 500 can be connected to the first tether 300 and the second tether 400 to pull the first tether 300 and the second tether 400 together.
[0073] The tightening means 500 in accordance with the present embodiment can be eccentrically disposed at the center of the length L of the main body 100. The tightening means 500 can be eccentrically disposed toward the other side in the longitudinal direction of the main body 100 where the second tether 400 is located, with respect to the center of the length L of the main body 100.
[0074] The tightening means 500 is eccentrically disposed with respect to the center of the length L of the main body 100, so that when the main body 100 is worn on the neck area 11 of the wearer’s body 10, the tightening means 500 can be located on the side of the neck area 11. This allows a wearer to easily operate the tightening means 500.
[0075] The tightening means 500 in accordance with the present embodiment may include a rotating unit 510 (e.g., a rotator) and the lace 520.
[0076] The rotating unit 510 can be rotatably coupled to the outer cover 120. The rotating unit 510 can be coupled to the outer cover 120 by passing through the outer cover 120 in the thickness direction.
[0077] The lace 520 can be coupled to the rotating unit 510. The lace 520 can be connected between the first tether 300 and the second tether 400. The lace 520 can be formed to have a ring shape. The lace 520 may serve to adjust the size of the main body 100.
[0078] The rotating unit 510 in accordance with the present embodiment may include a dial 511 and a winding part 512.
[0079] The dial 511 is a member grasped by the wearer and can protrude from the outer cover 120. The dial 511 can protrude from the outer surface of the outer cover 120 toward the outside of the wearer’s body 10. The transverse cross-section of the dial 511 can be formed in a circular shape.
[0080] The winding part 512 can be accommodated in the main body 100. The winding part 512 can be disposed inside the main body 100. The winding part 512 can be disposed between the inner cover 110 and the outer cover 120.
[0081] The winding part 512 can be wound around with the lace 520. The winding part 512 can be wound around with the lace 520 according to the rotation direction of the dial 511. The winding part 512 can be rotated together with the dial 511 and can be rotated in the same direction as the rotation direction of the dial 511.
[0082] For example, when the dial 511 is rotated in one direction, the winding part 512 can be wound around with the lace 520. The lace 520 can be wound around an outer peripheral surface of the winding part 512. When the lace 520 is wound around the winding part 512, the first tether 300 and the second tether 400 connected to the lace 520 pull both ends of the main body 100 in the direction where the winding part 512 is located. This can reduce the size of the main body 100. Accordingly, the main body 100 worn on the neck area 11 of the wearer’s body 10 can be adjusted in size to fit the wearer's neck by tightening the neck area 11. That is, the overall length of the main body 100 can be reduced.
[0083] On the other hand, when the dial 511 is rotated in the reverse direction, the lace 520 wound around the winding part 512 can be unwound from the winding part 512. As the lace 520 is unwound from the winding part 512, the pulling of the first tether 300 and the second tether 400 that pull both ends of the main body 100 is released, allowing the reduced main body 100 to return to its original shape.
[0084] The lace 520 in accordance with the present embodiment can be connected to an end of the first tether 300. The other end in the longitudinal direction of the first tether 300 can be connected to a first portion 521 of the lace 520. The end of the first tether 300 connected to the first portion 521 of the lace 520 can be rolled by a set length and sewn to an outer surface of the first tether 300 so that the lace 520 passes through the end of the first tether 300.
[0085] The first portion 521 of the lace 520 and a second portion 522 of the lace 520 facing each other along the longitudinal direction of the main body 100 can be connected to an end of the second tether 400. The second portion 522 of the lace 520 can be spaced apart from the first portion 521 of the lace 520.
[0086] The other end in the longitudinal direction of the second tether 400 can be connected to the second portion 522 of the lace 520. The end of the second tether 400 connected to the second portion 522 of the lace 520 can be rolled by a set length and sewn to an outer surface of the second tether 400 so that the lace 520 passes through the end of the second tether 400.
[0087] A third portion 523 of the lace 520 disposed between the first portion 521 and the second portion 522 of the lace 520 can be connected to the winding part 512. The third portion 523 of the lace 520 can be fixed to the outer peripheral surface of the winding part 512.
[0088] The tightening means 500 in accordance with the present embodiment can be exemplified by a BOA fit system manufactured by BOA Technology Inc., which is rotated in one direction and fixed by a user's operation and is automatically rotated in the opposite direction by the user's operation.
[0089] The wearable airbag in accordance with the present embodiment may further include a loop 600.
[0090] The loop 600 can be formed to have a hollow shape with an empty inside. The loop 600 can be formed to have a roughly cylindrical shape. The loop 600 can be formed to have a shape extending to a set length along a direction parallel to the longitudinal direction of the main body 100. The loop 600 may include the same material as the main body 100, the cushion 200, the first tether 300, and the second tether 400.
[0091] The loop 600 in accordance with the present embodiment can be coupled to the outer cover 120. An outer peripheral surface of the loop 600 can be coupled to the inner surface of the outer cover 120. The loop 600 can be fixed to the outer cover 120 through a coupling method such as sewing, bonding, joining, or fusion.
[0092] A lace 520 can pass through the inside of the loop 600. A fourth portion 524 of the lace 520 facing the third portion 523 of the lace 520 can pass through the loop 600. The fourth portion 524 of the lace 520 can be spaced apart from the third portion 523 of the lace 520 along a direction intersecting the longitudinal direction of the main body 100.
[0093] The loop 600 can support the lace 520. The loop 600, through which the fourth portion 524 of the lace 520 passes and which supports the fourth portion 524 of the lace 520, can distribute the tensile load applied to only both ends of the main body 100 due to the lace 520.
[0094] The tightening distance of the lace 520 can be adjusted by increasing or decreasing the sum of the length between the first portion 521 and the third portion 523 of the lace 520 and the length between the second portion 522 and the third portion 523 of the lace 520.
[0095] FIG. 7 is a cross-sectional view schematically illustrating a wearable airbag in accordance with another embodiment of the present disclosure.
[0096] Referring to FIG. 7, the wearable airbag in accordance with another embodiment of the present disclosure may include a main body 100, a cushion 200, a first tether 300, a second tether 400, a tightening means 500, and a blocking cover 700.
[0097] In describing the wearable airbag in accordance with another embodiment of the present disclosure, the blocking cover 700 not described in the wearable airbag in accordance with the embodiment of the present disclosure is described.
[0098] The description about the wearable airbag in accordance with the embodiment of the present disclosure can be applied as is to the remaining components of the wearable airbag in accordance with another embodiment of the present disclosure.
[0099] The blocking cover 700 in accordance with the present embodiment can be coupled to the outer cover 120. The blocking cover 700 can be coupled to the inner surface of the outer cover 120. An edge of the blocking cover 700 can be fixed to an edge of the outer cover 120 through a coupling method such as sewing, bonding, joining, or fusion.
[0100] The blocking cover 700 can be disposed between the cushion 200 and the outer cover 120. The blocking cover 700 can be manufactured using a fabric material with a low coefficient of friction.
[0101] The blocking cover 700 can block contact between the first tether 300, the second tether 400, and the tightening means 500 and the cushion 200.
[0102] When the size of the main body 100 is adjusted by operating the tightening means 500, the first tether 300, the second tether 400, and the lace 520 can come into contact with the outer surface of the cushion 200, causing friction. This causes a problem in that a large amount of force is required to rotate the tightening means 500 when the size of the main body 100 is adjusted by rotating the tightening means 500.
[0103] In addition, when the cushion 200 is deployed, since the inflated cushion 200 pushes up the first tether 300, the second tether 400, and the lace 520, unintended situations may occur, such as strangling of a wearer's neck by a decrease in the length of the lace 520.
[0104] In order to solve such a problem, the blocking cover 700 with a low coefficient of friction can be applied to minimize frictional areas during deployment of the cushion 200, thereby easily maintaining a deployment speed of the cushion 200. In addition, the first tether 300, the second tether 400, and the tightening means 500 can be separated from the cushion 200 by the blocking cover 700. This can prevent unintended strangulation by preventing the first tether 300, the second tether 400, and the tightening means 500 from interfering with the cushion 200 when the cushion 200 is deployed.
[0105] In the wearable airbag in accordance with an embodiment of the present disclosure, the tightening means 500 is eccentrically disposed at the center of the length L of the main body 100, and the first tether 300 and the second tether 400 connected to the tightening means 500 have different lengths, so that uniform left-right tightening of the main body 100 can be conveniently implemented even when the tightening means 500 is eccentrically located.
[0106] In the wearable airbag in accordance with an embodiment of the present disclosure, the first tether 300, the second tether 400, and the tightening means 500 are prevented from interfering with the cushion 200 by the blocking cover 700, so that the tightening means 500 is easily operated and does not interfere with the deployment of the cushion 200.
[0107] Although the present disclosure has been described with reference to the embodiments illustrated in the drawings, the embodiments of the disclosure are for illustrative purposes only, and those skilled in the art will appreciate that various modifications and equivalent other embodiments are possible from the embodiments. Thus, the true technical scope of the present disclosure should be defined by the following claims.
Claims
1. A wearable airbag comprising:a main body configured to wrap around a neck area of a wearer;a cushion accommodated in the main body, and configured to be inflated by injection of gas from an inflator to be deployed to a head area of the wearer;a first tether accommodated in the main body and coupled to a first side in a longitudinal direction of the main body;a second tether accommodated in the main body, coupled to a second side in the longitudinal direction of the main body, and spaced apart from the first tether; anda tightener rotatably coupled to the main body and connected to the first tether and the second tether, and configured to pull the first tether and the second tether.
2. The wearable airbag according to claim 1, wherein the tightener is eccentrically disposed at a center of a length of the main body.
3. The wearable airbag according to claim 1, wherein a length of the first tether and a length of the second tether are different from each other.
4. The wearable airbag according to claim 3, wherein the length of the second tether is shorter than the length of the first tether.
5. The wearable airbag according to claim 1, wherein the main body comprises:an inner cover adjacent to the neck area; andan outer cover coupled to the inner cover, disposed to face the inner cover, and coupled to the first tether and the second tether.
6. The wearable airbag according to claim 5, wherein the tightener comprises:a rotator rotatably coupled to the outer cover; anda lace coupled to the rotator and connected between the first tether and the second tether.
7. The wearable airbag according to claim 6, wherein the rotator comprises:a dial protruding from the outer cover; anda winding part configured to be wound around with the lace according to a rotation direction of the dial.
8. The wearable airbag according to claim 7, wherein a first portion of the lace is connected to an end of the first tether,a second portion of the lace facing the first portion is connected to an end of the second tether, anda third portion of the lace disposed between the first portion and the second portion is connected to the winding part.
9. The wearable airbag according to claim 6, further comprising:a loop coupled to the outer cover, wherein the lace passes through the loop.
10. The wearable airbag according to claim 5, further comprising:a blocking cover coupled to the outer cover and disposed between the cushion and the outer cover to block contact between the first tether, the second tether, and the tightener and the cushion.
11. A wearable airbag system, comprising:an inflator;a main body configured to wrap around a neck area of a wearer;a cushion accommodated in the main body;an impact detection sensor;an airbag controller configured to control the inflator to inject gas into the cushion for deployment to a head area of the wearer based on sensing of an impact by the impact detection sensor;a first tether accommodated in the main body and coupled to a first side in a longitudinal direction of the main body;a second tether accommodated in the main body, coupled to a second side in the longitudinal direction of the main body, and spaced apart from the first tether; anda tightener rotatably coupled to the main body and connected to the first tether and the second tether, and configured to pull the first tether and the second tether.
12. The wearable airbag system according to claim 11, wherein the tightener is eccentrically disposed at a center of a length of the main body.
13. The wearable airbag system according to claim 11, wherein a length of the first tether and a length of the second tether are different from each other.
14. The wearable airbag system according to claim 13, wherein the length of the second tether is shorter than the length of the first tether.
15. The wearable airbag system according to claim 11, wherein the main body comprises:an inner cover adjacent to the neck area; andan outer cover coupled to the inner cover, disposed to face the inner cover, and coupled to the first tether and the second tether.