Wearable airbag
The wearable airbag's external length adjusters and blocking cover facilitate easy size adjustment, addressing the challenge of internal interference and enhancing user comfort and safety.
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 post-wearing due to internal adjustment devices, which can interfere with the wearer's body during deployment.
A wearable airbag design featuring external length adjusters for strings connected to a tether, allowing easy size adjustment without interfering with deployment, using a blocking cover to minimize friction and ensure smooth operation.
Enables easy and force-efficient size adjustment of the airbag without interfering with deployment, ensuring comfort and safety for the wearer.
Smart Images
Figure US20260206884A1-D00000_ABST
Abstract
Description
CROSS-REFERENCE TO RELATED APPLICATION
[0001] This application claims priority to and the benefit under 35 USC § 119(a) of Korean Patent Application No. 10-2025-0008071, filed on January 20, 2025, in the Korean Intellectual Property Office, the entire disclosure of which is hereby incorporated by reference for all purposes.BACKGROUNDField
[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.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 for deployment to a head area of the wearer; a tether accommodated in the main body; a first string connected to one side of the tether and partially exposed by passing through the main body; a second string connected to the other side of the tether and partially exposed by passing through the main body; a first length adjuster coupled to the first string and configured to adjust an exposed length of the first string from an outside of the main body; and a second length adjuster coupled to the second string and configured to adjust an exposed length of the second string from an outside of the main body.
[0010] The first string and the second string may be spaced apart from each other along a longitudinal direction of the main body.
[0011] The tether may be disposed between the first string and the second string.
[0012] A length of the first string and a length of the second string may be identical to each other.
[0013] The main body may include: an inner cover adjacent to the neck area of the wearer; and an outer cover coupled to the inner cover and disposed to face the inner cover.
[0014] The tether may be disposed between the inner cover and the cushion.
[0015] The wearable airbag may further include: a first through hole, through which the first string passes, is provided in one side in a longitudinal direction of the inner cover; and a second through hole, through which the second string passes, is provided in the other side in the longitudinal direction of the inner cover.
[0016] The wearable airbag may further include: a first loop coupled to the inner cover and disposed between the first through hole and the tether, the first string passing through the first loop; and a second loop coupled to the inner cover and disposed between the second through hole and the tether, the second string passing through the second loop.
[0017] The first loop may be provided in a plural number, the plurality of first loops being spaced apart from each other along a direction intersecting the longitudinal direction of the inner cover, wherein the second loop may be provided in a plural number, the plurality of second loops being spaced apart from each other along the direction intersecting the longitudinal direction of the inner cover.
[0018] The wearable airbag may further include a blocking cover coupled to the inner cover and disposed between the cushion and the inner cover to block contact between at least one of the first string or the second string 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 airbag controller configured to control the inflator to inject gas into the cushion for deployment to a head area of the wearer; a tether accommodated in the main body; a first string connected to one side of the tether and partially exposed by passing through the main body; a second string connected to the other side of the tether and partially exposed by passing through the main body; a first length adjuster coupled to the first string and configured to adjust an exposed length of the first string from an outside of the main body; and a second length adjuster coupled to the second string and configured to adjust an exposed length of the second string from an outside of the main body.
[0020] The first string and the second string may be spaced apart from each other along a longitudinal direction of the main body.
[0021] The tether may be disposed between the first string and the second string.
[0022] A length of the first string and a length of the second string may be identical to each other.
[0023] The main body may include: an inner cover adjacent to the neck area of the wearer; and an outer cover coupled to the inner cover and disposed to face the inner cover.
[0024] In an embodiment of the present disclosure, a tether is disposed in the center of a main body with high interference with a cushion, and a first string and a second string having the same length are connected to both sides of the tether so that the left and right sides of the main body have the same tightening length, thereby suppressing the phenomenon of an increase in force required for size adjustment caused by friction and resistance between the cushion and the first string / the second string.
[0025] In an embodiment of the present disclosure, the first string / the second string and the cushion do not interfere with each other due to a blocking cover, so that a first length adjustment means and a second length adjustment means are easily operated and do 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 inner cover in accordance with an embodiment of the present disclosure.
[0029] FIG. 5 is a diagram schematically illustrating a state in which the size of a main body is reduced by first and second length adjustment 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 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 inner cover in accordance with an embodiment of the present disclosure, FIG. 5 is a diagram schematically illustrating a state in which the size of a main body is reduced by first and second length adjustment 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 tether 300, a first string 410, a second string 420, a first length adjustment means 510 (e.g., a first length adjuster), and a second length adjustment means 520 (e.g., a second length adjuster), 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 tether 300, the first string 410, the second string 420, the first length adjustment means 510, and the second length adjustment means 520 as a whole.
[0037] The main body 100 can be provided therein with a space where a part of the cushion 200, the tether 300, the first string 410, and the second string 420 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. 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 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 or airbag control unit (ACU, 40) that controls the operation of the inflator 20 and a battery (41) hat 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 tether 300 can be accommodated in the main body 100. The tether 300 can be disposed at the inner center of the main body 100 instead of being fixed to the main body 100. The tether 300 may include the same material as the main body 100 and the cushion 200.
[0060] The tether 300 can be formed in a band shape with a set length. The tether 300 can be formed to extend along a direction parallel to the longitudinal direction of the main body 100.
[0061] The tether 300 can be connected to the first string 410 and the second string 420. The tether 300 can be disposed between the first string 410 and the second string 420 and connected to the first string 410 and the second string 420.
[0062] The tether 300 can minimize contact between the first string 410 / the second string 420 and the cushion 200, thereby reducing the force required for adjusting the size of the main body 100.
[0063] The tether 300 in accordance with the present embodiment can be disposed between the inner cover 110 and the cushion 200. The tether 300 can be disposed between the inner surface of the inner cover 110, which faces the inner surface of the outer cover 120, and the outer surface of the cushion 200.
[0064] The first string 410 can be connected to the tether 300. The first string 410 may refer to a fiber string having a set length. The first string 410 can be formed to have a roughly ring shape.
[0065] A part of the first string 410 can be accommodated in the main body 100, and the remaining part thereof can be exposed to the outside of the main body 100. One side of the first string 410 disposed inside the main body 100 can be connected to one end in the longitudinal direction of the tether 300, and the other side of the first string 410 can be exposed to the outside by passing through the main body 100.
[0066] An end of the tether 300 connected to the first string 410 can be rolled by a set length and sewn to an outer surface of the tether 300 so that the first string 410 passes through the end of the tether 300. The other side of the first string 410 exposed to the outside of the main body 100 can be coupled to the first length adjustment means 510.
[0067] The first string 410 in accordance with the present embodiment can be disposed between the inner cover 110 and the cushion 200. The first string 410 can be disposed between the inner surface of the inner cover 110 facing the inner surface of the outer cover 120 and the outer surface of the cushion 200. The first string 410 can pass through the inner cover 110.
[0068] The inner cover 110 in accordance with the present embodiment may be provided with a first through hole 111. The first through hole 111 can be provided on one side in the longitudinal direction of the inner cover 110. The first through hole 111 can be formed by passing through the inner cover 110 in the thickness direction.
[0069] The first through hole 111 can be provided in a plural number. The plurality of first through holes 111 can be spaced apart from each other along the longitudinal direction of the inner cover 110. The first string 410 can pass through the first through hole 111.
[0070] The second string 420 can be connected to the tether 300. The second string 420 may refer to a fiber string having a set length. The second string 420 can be formed to have a roughly ring shape. The first string 410 and the second string 420 can be formed to have the same size and shape.
[0071] The first string 410 and the second string 420 in accordance with the present embodiment can be formed to have the same length. The first string 410 and the second string 420 can be spaced apart along the longitudinal direction of the main body 100.
[0072] A part of the second string 420 can be accommodated in the main body 100, and the remaining part thereof can be exposed to the outside of the main body 100. One side of the second string 420 disposed inside the main body 100 can be connected to the other end in the longitudinal direction of the tether 300, and the other side of the second string 420 can be exposed to the outside by passing through the main body 100.
[0073] An end of the tether 300 connected to the second string 420 can be rolled by a set length and sewn to the outer surface of the tether 300 so that the second string 420 passes through the end of the tether 300. The other side of the second string 420 exposed to the outside of the main body 100 can be coupled to the second length adjustment means 520.
[0074] The second string 420 in accordance with the present embodiment can be disposed between the inner cover 110 and the cushion 200. The second string 420 can be disposed between the inner surface of the inner cover 110 facing the inner surface of the outer cover 120 and the outer surface of the cushion 200. The second string 420 can pass through the inner cover 110.
[0075] The inner cover 110 in accordance with the present embodiment may be provided with a second through hole 121. The second through hole 121 can be provided on the other side in the longitudinal direction of the inner cover 110. The second through hole 121 can be formed by passing through the inner cover 110 in the thickness direction.
[0076] The second through hole 121 can be provided in a plural number. The plurality of second through holes 121 can be spaced apart from each other along the longitudinal direction of the inner cover 110. The second string 420 can pass through the second through hole 121.
[0077] The lengths of the first string 410 and the second string 420 disposed inside the main body 100 in accordance with the present embodiment and the length of the tether 300 may be the same as or different from each other. For example, the length of the tether 300 parallel to the longitudinal direction of the main body 100 may be the same as or different from the lengths of the first string 410 and the second string 420 parallel to the longitudinal direction of the main body 100.
[0078] The first length adjustment means 510 can be coupled to the first string 410. The first length adjustment means 510 can be provided outside the main body 100 and coupled to the other side of the first string 410 exposed to the outside of the main body 100.
[0079] The first length adjustment means 510 can adjust the exposed length of the first string 410 from the outside of the main body 100.
[0080] When a wearer pulls the first string 410 by pressing the first length adjustment means 510 while wearing the main body 100 on the neck area 11 of the wearer’s body 10, the first length adjustment means 510 presses one end of the main body 100 and at the same time, the exposed length of the first string 410 increases. 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.
[0081] On the other hand, when the wearer moves the first length adjustment means 510 to the other end of the first string 410 by pressing the first length adjustment means 510, the tension on the first string 410 is released, allowing the reduced main body 100 to return to its original shape.
[0082] The second length adjustment means 520 can be coupled to the second string 420. The second length adjustment means 520 can be provided outside the main body 100 and coupled to the other side of the second string 420 exposed to the outside of the main body 100.
[0083] The second length adjustment means 520 can adjust the exposed length of the second string 420 from the outside of the main body 100.
[0084] When the wearer pulls the second string 420 by pressing the second length adjustment means 520 while wearing the main body 100 on the neck area 11 of the wearer’s body 10, the second length adjustment means 520 presses the other end of the main body 100 and at the same time, the exposed length of the second string 420 increases. 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.
[0085] On the other hand, when the wearer moves the second length adjustment means 520 to the other end of the second string 420 by pressing the second length adjustment means 520, the tension on the second string 420 is released, allowing the reduced main body 100 to return to its original shape.
[0086] The first length adjustment means 510 and the second length adjustment means 520 in accordance with the present embodiment can be exemplified by a main body portion having a hollow portion through which the first string passes, a movable block movably coupled to the main body portion and capable of pressing the first string or releasing the pressure depending on a pressing operation, and a code stopper coupled to the main body portion and providing elasticity to the movable block so that the first string is fixed to the main body portion.
[0087] The wearable airbag in accordance with the present embodiment may further include a first loop 610 and a second loop 620.
[0088] The first loop 610 can be formed to have a hollow shape with an empty inside. The first loop 610 can be formed to have a roughly cylindrical shape. The first loop 610 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 first loop 610 may include the same material as the main body 100, the cushion 200, and the tether 300.
[0089] The first loop 610 in accordance with the present embodiment can be coupled to the inner cover 110. An outer peripheral surface of the first loop 610 can be coupled to the inner surface of the inner cover 110. The first loop 610 can be fixed to the inner cover 110 through a coupling method such as sewing, bonding, joining, or fusion.
[0090] The first loop 610 can be disposed between the tether 300 and the first through hole 111. The first loop 610 can be spaced apart from the tether 300 and the first through hole 111. The first string 410 can pass through the interior of the first loop 610.
[0091] The first loop 610 in accordance with the present embodiment can be provided in a plural number. The plurality of first loops 610 can be spaced apart from each other along a direction intersecting the longitudinal direction of the main body 100.
[0092] A first portion 411 of the first string 410 can pass through one of the plurality of first loops 610, and a second portion 412 of the first string 410, which faces and is spaced apart from the first portion 411 of the first string 410, can pass through the other one of the plurality of first loops 610.
[0093] The first loop 610 can support the first string 410. The first loop 610 can distribute a tensile load applied to only one end of the main body 100 due to the first string 410.
[0094] The second loop 620 can be formed to have a hollow shape with an empty inside. The second loop 620 can be formed to have a roughly cylindrical shape. The second loop 620 can be formed to have a shape extending to a set length along the direction parallel to the longitudinal direction of the main body 100.
[0095] The second loop 620 may include the same material as the main body 100, the cushion 200, and the tether 300. The first loop 610 and the second loop 620 can be formed to have the same size and shape.
[0096] The second loop 620 in accordance with the present embodiment can be coupled to the inner cover 110. An outer peripheral surface of the second loop 620 can be coupled to the inner surface of the inner cover 110. The second loop 620 can be fixed to the inner cover 110 through a coupling method such as sewing, bonding, joining, or fusion.
[0097] The second loop 620 can be disposed between the tether 300 and the second through hole 121. The second loop 620 can be spaced apart from the tether 300 and the second through hole 121. The second string 420 can pass through the interior of the second loop 620.
[0098] The second loop 620 in accordance with the present embodiment can be provided in a plural number. The plurality of second loops 620 can be spaced apart from each other along the direction intersecting the longitudinal direction of the main body 100.
[0099] A first portion 421 of the second string 420 can pass through one of the plurality of second loops 620, and a second portion 422 of the second string 420, which faces and is spaced apart from the first portion 421 of the second string 420, can pass through the other one of the plurality of second loops 620.
[0100] The second loop 620 can support the second string 420. The second loop 620 can distribute a tensile load applied only to the other end of the main body 100 due to the second string 420.
[0101] FIG. 7 is a cross-sectional view schematically illustrating a wearable airbag in accordance with another embodiment of the present disclosure.
[0102] 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 tether 300, a first string 410, a second string 420, a first length adjustment means 510, a second length adjustment means 520, and a blocking cover 700.
[0103] 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.
[0104] 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.
[0105] The blocking cover 700 in accordance with the present embodiment can be coupled to the inner cover 110. The blocking cover 700 can be coupled to an inner surface of the inner cover 110. An edge of the blocking cover 700 can be fixed to an edge of the inner cover 110 through a coupling method such as sewing, bonding, joining, or fusion.
[0106] The blocking cover 700 can be disposed between the cushion 200 and the inner cover 110. The blocking cover 700 can be manufactured using a fabric material with a low coefficient of friction.
[0107] The blocking cover 700 can block contact between the first string 410 / the second string 420 and the cushion 200.
[0108] For example, when the first string 410 and second string 420 are stretched within the main body 100 during the deployment of the cushion 200, unintended situations may occur, such as strangling of a wearer's neck by the cushion 200 inflating and pushing up the stretched first string 410 and second string 420.
[0109] In order to solve such a problem, the blocking cover 700 with a low coefficient of friction can be applied to minimize the frictional force between the first string 410 / the second string 420 and the cushion 200, thereby allowing the size of the main body 100 to be adjusted with minimal force. In addition, since the first string 410 / the second string 420 and the cushion 200 can be separated by the blocking cover 700, when the cushion 200 is deployed, the first string 410 / the second string 420 and the cushion 200 do not interfere with each other, thereby preventing unintended strangulation.
[0110] In the wearable airbag in accordance with an embodiment of the present disclosure, the tether 300 is disposed in the center of the main body 100 with high interference with the cushion 200, and the first string 410 and the second string 420 having the same length are connected to both sides of the tether 300 so that the left and right sides of the main body 100 have the same tightening length, thereby suppressing the phenomenon of an increase in force required for size adjustment caused by friction and resistance between the cushion 200 and the first string 410 / the second string 420.
[0111] In the wearable airbag in accordance with an embodiment of the present disclosure, the first string 410 / the second string 420 and the cushion 200 do not interfere with each other due to the blocking cover 700, so that the first length adjustment means 510 and the second length adjustment means 520 are easily operated and do not interfere with the deployment of the cushion 200.
[0112] 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 for deployment to a head area of the wearer;a tether accommodated in the main body;a first string connected to one side of the tether and partially exposed by passing through the main body;a second string connected to the other side of the tether and partially exposed by passing through the main body;a first length adjuster coupled to the first string and configured to adjust an exposed length of the first string from an outside of the main body; anda second length adjuster coupled to the second string and configured to adjust an exposed length of the second string from an outside of the main body.
2. The wearable airbag according to claim 1, wherein the first string and the second string are spaced apart from each other along a longitudinal direction of the main body.
3. The wearable airbag according to claim 2, wherein the tether is disposed between the first string and the second string.
4. The wearable airbag according to claim 2, wherein a length of the first string and a length of the second string are identical to each other.
5. The wearable airbag according to claim 1, wherein the main body comprises:an inner cover adjacent to the neck area of the wearer; andan outer cover coupled to the inner cover and disposed to face the inner cover.
6. The wearable airbag according to claim 5, wherein the tether is disposed between the inner cover and the cushion.
7. The wearable airbag according to claim 5, further comprising: a first through hole, through which the first string passes, is provided in one side in a longitudinal direction of the inner cover; anda second through hole, through which the second string passes, is provided in the other side in the longitudinal direction of the inner cover.
8. The wearable airbag according to claim 7, further comprising:a first loop coupled to the inner cover and disposed between the first through hole and the tether, the first string passing through the first loop; anda second loop coupled to the inner cover and disposed between the second through hole and the tether, the second string passing through the second loop.
9. The wearable airbag according to claim 8, wherein the first loop is provided in a plural number, the plurality of first loops being spaced apart from each other along a direction intersecting the longitudinal direction of the inner cover, andwherein the second loop is provided in a plural number, the plurality of second loops being spaced apart from each other along the direction intersecting the longitudinal direction of the inner cover.
10. The wearable airbag according to claim 5, further comprising:a blocking cover coupled to the inner cover and disposed between the cushion and the inner cover to block contact between at least one of the first string or the second string 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 airbag controller configured to control the inflator to inject gas into the cushion for deployment to a head area of the wearer;a tether accommodated in the main body;a first string connected to one side of the tether and partially exposed by passing through the main body;a second string connected to the other side of the tether and partially exposed by passing through the main body;a first length adjuster coupled to the first string and configured to adjust an exposed length of the first string from an outside of the main body; anda second length adjuster coupled to the second string and configured to adjust an exposed length of the second string from an outside of the main body.
12. The wearable airbag system according to claim 11, wherein the first string and the second string are spaced apart from each other along a longitudinal direction of the main body.
13. The wearable airbag system according to claim 12, wherein the tether is disposed between the first string and the second string.
14. The wearable airbag system according to claim 12, wherein a length of the first string and a length of the second string are identical to each other.
15. The wearable airbag according to claim 11, wherein the main body comprises:an inner cover adjacent to the neck area of the wearer; andan outer cover coupled to the inner cover and disposed to face the inner cover.