JP7845697B2 - Method for manufacturing airbags for head protection and cervical spine protection - Google Patents

Description

This invention relates to airbags for head protection and cervical spine protection that protect the user's head and cervical spine, and to a method for manufacturing the same.

This invention relates to airbags for head and cervical spine protection that protect the user's head and cervical spine, and to a method for manufacturing the same. A fall (tumble) refers to the phenomenon of sustaining injury from falling or toppling, or the injury resulting from such a fall. Falls are a common cause of death and occur frequently. By age group, the risk of falls is particularly high among the elderly. By occupation, the risk of falls is particularly high among construction workers, electricians, miners, and painters.

Various types of airbags are used to prevent injuries in the event of a fall. Generally, for elderly individuals, airbags worn around the waist are used to prevent injuries from falls, while for industrial workers and motorcyclists, airbags worn around the upper and/or lower body are used to protect against injuries from falls.

The airbag is manufactured as an integrated or detachable unit within a user-wearable harness, allowing the user to easily wear the airbag while performing tasks or other activities.

Airbags are driven by a system that uses acceleration sensors and/or angular velocity sensors to detect a fall, and then, based on the detection signal, a triggering mechanism strikes a gas cartridge, causing the airbag to inflate. Based on this drive system, research is ongoing to effectively protect various parts of the human body by varying the shape and number of airbags.

As mentioned above, the airbag described in Patent Document 1 is publicly known.

Patent Document 1 discloses an airbag system in which the upper airbag, back airbag, and lumbar airbag are separated and each is connected to a harness.

The airbag system described in Patent Document 1 protects the user from external impacts by inflating with compressed gas when a fall or other incident is detected. However, the shape of this airbag system is insufficient to protect both the user's head and cervical spine.

Korean Registered Patent No. 10-1803319 Specification

This invention was devised to solve the aforementioned problems and aims to provide a head protection and cervical spine protection airbag, in which the central airbag, left-side airbag, and right-side airbag are molded in a 3D shape, surrounding the user's head from the left, rear, and right sides, thereby protecting the user's head and cervical spine, as well as a method for manufacturing the same.

One feature of the present invention provides an airbag for head and cervical spine protection, comprising a central airbag, a left airbag located to the left of the central airbag, and a right airbag located to the right of the central airbag. The left airbag includes a first left airbag connected to the left side of the central airbag, with its front surface protruding further forward than the front surface of the central airbag; and a second left airbag extending downward from the lower part of the first left airbag, with its rear surface located forward of the front surface of the central airbag. The right airbag includes a first right airbag connected to the right side of the central airbag, with its front surface protruding further forward than the front surface of the central airbag; and a second right airbag extending downward from the lower part of the first right airbag, with its rear surface located forward of the front surface of the central airbag.

Furthermore, although a space is formed in front of the central airbag, this space is located to the right of the first left airbag and to the left of the second right airbag, and is surrounded by the central airbag, the first left airbag, and the first right airbag.

Furthermore, the longitudinal centerline of the first left airbag is formed to tilt downwards as it approaches the front of the first left airbag, and the longitudinal centerline of the first right airbag is formed to tilt downwards as it approaches the front of the first right airbag.

Furthermore, the longitudinal centerline of the second left airbag is formed to tilt to the right as it approaches the bottom of the second left airbag, and the longitudinal centerline of the second right airbag is formed to tilt to the left as it approaches the bottom of the second right airbag.

Furthermore, the system includes a left-side gas cartridge provided on the rear surface of the second left-side airbag, a left-side inflator provided on the rear surface of the second left-side airbag that, when impact is applied, injects the gas from the left-side gas cartridge into the left-side airbag and inflates the left-side airbag, a right-side gas cartridge provided on the rear surface of the second right-side airbag, and a right-side inflator provided on the rear surface of the second right-side airbag that, when impact is applied, injects the gas from the right-side gas cartridge into the right-side airbag and inflates the right-side airbag.

Furthermore, the invention further includes a left-side vent hole provided on the left side of the first left-side airbag, which, when the first left-side airbag is inflated with gas and subjected to impact, exhausts the gas to the outside of the first left-side airbag; and a right-side vent hole provided on the right side of the first right-side airbag, which, when the first right-side airbag is inflated with gas and subjected to impact, exhausts the gas to the outside of the first right-side airbag.

Furthermore, it includes a left-side zipper provided on the left side of the second left-side airbag, and a right-side zipper provided on the left side of the second right-side airbag.

Furthermore, the first left-side airbag and the first right-side airbag are mirror-symmetric with respect to the center line of the central airbag, and the second left-side airbag and the second right-side airbag are mirror-symmetric with respect to the center line of the central airbag. The maximum cross-sectional areas of the central airbag, the first left-side airbag and the first right-side airbag, and the second left-side airbag and the second right-side airbag satisfy the relationship: "Maximum cross-sectional area of the first left-side airbag and the first right-side airbag > Maximum cross-sectional area of the central airbag > Maximum cross-sectional area of the second left-side airbag and the second right-side airbag."

A head and cervical spine protection airbag according to another feature of the present invention, which protects the user's head and cervical spine, includes: a central airbag whose front surface is located behind the user's head; a first left airbag whose right side is positioned to the left of the head and protrudes forward from the left side of the central airbag, with its lower surface located above the user's left shoulder; a second left airbag whose rear surface is positioned in front of the user's left chest and extends downward from the first left airbag; a first right airbag whose left side is positioned to the right of the head and protrudes forward from the right side of the central airbag, with its lower surface located above the user's right shoulder; and a second right airbag whose rear surface is positioned in front of the user's right chest and extends downward from the first right airbag.

Furthermore, the uppermost part of the central airbag is positioned even higher than the uppermost part of the user's head.

A method for manufacturing an airbag for head protection and cervical spine protection according to one feature of the present invention comprises: a front member including: a first central part; a first left side part formed to the left of the first central part and having a first left side projection that protrudes downward from the first central part; a first right side part formed to the right of the first central part and having a first right side projection that protrudes downward from the first central part; a left side hole formed to the left of the center line of the first central part; a right side hole formed to the right of the center line of the first central part; a first left side groove formed above the left side hole; and a first right side groove formed above the right side hole; and a second central part, a second left side part, and a second right side part having the same shape as the first central part, the first left side part, and the first right side part, respectively. The airbag forming step includes: a member provision step of providing a rear member including a front member and a rear member; a coupling step of connecting the front member and the rear member in the front-rear direction; a step of folding the first left portion toward the first center with reference to a left reference line passing through the center point of the first left groove and the left hole, then connecting the first left arc and the second left arc of the left hole to form a left airbag to the left of the first center; a step of folding the first right portion toward the first center with reference to a right reference line passing through the center point of the first right groove and the right hole, then connecting the first right arc and the second right arc of the right hole to form a right airbag to the right of the first center; and a step of forming a central airbag consisting of the first center between the left airbag and the right airbag.

Furthermore, the process further includes a ring joining step prior to the joining step, in which the left ring is joined behind the left hole so that the center point of the left ring coincides with the center point of the left hole, and the right ring is joined behind the right hole so that the center point of the right ring coincides with the center point of the right hole.

Furthermore, during the airbag formation stage, when the first left portion is folded towards the first center, the left region of the left ring is folded over so that it is positioned in front of the right region of the left ring. Similarly, when the first right portion is folded towards the first center, the right region of the right ring is folded over so that it is positioned in front of the left region of the right ring.

The airbags for head protection and cervical spine protection of the present invention, as described above, and their manufacturing methods, have the following effects.

The central airbag, left-side airbag, and right-side airbag surround the user's head and cervical spine, protecting the user's head and cervical spine in the event of a fall.

The left and right airbags inflate in a convex shape, effectively absorbing the impact on the user.

The second left-side airbag and the second right-side airbag can protect the user's upper body.

The top of the central airbag is positioned higher than the top of the user's head, ensuring sufficient protection for the user's head.

The first left-side groove and the second left-side groove, as well as the first right-side groove and the second right-side groove, allow the first left-side portion and the second left-side portion, and the first right-side portion and the second right-side portion, to be easily folded toward the first central portion and the second central portion, enabling the easy manufacture of a 3D shape for head protection and cervical spine protection airbags.

When folding the first left portion and the second left portion, as well as the first right portion and the second right portion, towards the first and second central parts via the left and right rings, they can be easily folded, and the first left portion and the second left portion, as well as the first right portion and the second right portion, can be easily joined to the first and second central parts.

This is a perspective view of the airbag for head protection and cervical spine protection according to the present invention. This is a diagram showing the area behind Figure 1. This is a diagram showing the front view of Figure 1. This figure compares the cross-sectional areas of the central airbag, the first left-side airbag, and the second left-side airbag of the head protection and cervical spine protection airbags of the present invention. This diagram illustrates the positions of the left and right inflatable sections of the head protection and cervical spine protection airbags of the present invention. This is a diagram illustrating the left side of Figure 1. This is a diagram illustrating the right side of Figure 1. This diagram illustrates how the airbags for head protection and cervical spine protection of the present invention surround the user's head and cervical spine. This diagram illustrates how the airbags for head protection and cervical spine protection of the present invention surround the user's head and cervical spine. This figure illustrates a human body protection device equipped with airbags for head protection and cervical spine protection according to the present invention. Figure 10 shows the head protection and cervical spine protection airbags in their inflated state. This is a schematic diagram of the manufacturing method for the airbag for head protection and cervical spine protection of the present invention. This is a diagram illustrating the front panel. This is a diagram illustrating the back panel. This diagram illustrates the left and right rings. Figure 13 shows the state in which the left ring and the right ring are connected to the inside of the left hole and the right hole, respectively, of the front member.

The following is merely illustrative of the principles of the present invention. Therefore, those skilled in the art will be able to embody the principles of the invention and invent a variety of devices that fall within the concept and scope of the invention, even if they are not explicitly described or illustrated herein. Furthermore, all conditions and embodiments listed herein are, in principle, clearly intended solely for the purpose of enabling understanding of the concept of the invention, and should be understood not as being restrictive to the embodiments and states specifically listed herein.

The aforementioned objectives, features, and advantages will become further clear through the following detailed description relating to the attached drawings, thereby enabling a person with ordinary skill in the art to readily implement the technical idea of the invention.

The embodiments described herein are explained with reference to cross-sectional and/or perspective views that are ideal illustrative representations of the invention. The thicknesses of films and regions illustrated in such drawings are exaggerated for the sake of effective explanation of the technical content. The shapes in the illustrative drawings may be altered due to manufacturing techniques and/or tolerances. Furthermore, the number of metal molded products illustrated in the drawings represents only a partial representation. Therefore, embodiments of the invention are not limited to the illustrated specific forms and include variations in form resulting from the manufacturing process. The technical terms used herein are used to describe unit-specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless explicitly stated otherwise in the context. In this specification, terms such as “includes” or “comprising” indicate the existence of features, numbers, stages, operations, components, parts, or combinations thereof described herein, and should not be understood to preemptively exclude the possibility of the existence or addition of one or more other features, numbers, stages, operations, components, parts, or combinations thereof.

In the following, preferred embodiments of the present invention will be specifically described with reference to the attached drawings. In the following descriptions of various embodiments, components performing the same function will be given the same name and reference number for convenience, even if the embodiments differ. Furthermore, configurations and operations described in other embodiments will be omitted for convenience.

Airbag 10 for head protection and cervical spine protection according to the present invention
The airbag 10 for head protection and cervical spine protection of the present invention will be described below with reference to Figures 1 to 11.

Figure 1 is a perspective view of the head and cervical spine protection airbag of the present invention; Figure 2 is a rear view of Figure 1; Figure 3 is a front view of Figure 1; Figure 4 is a comparison of the cross-sectional areas of the central airbag, the first left airbag, and the second left airbag of the head and cervical spine protection airbag of the present invention; Figure 5 is a diagram illustrating the positions of the left and right inflatable parts of the head and cervical spine protection airbag of the present invention; Figure 6 is a left view of Figure 1; Figure 7 is a right view of Figure 1; Figures 8 and 9 illustrate the state in which the head and cervical spine protection airbag of the present invention surrounds the user's head and cervical spine; Figure 10 is a diagram illustrating a human body protection device equipped with the head and cervical spine protection airbag of the present invention; and Figure 11 is a diagram illustrating the inflated state of the head and cervical spine protection airbag of Figure 10.

As illustrated in Figures 1 to 11, the airbag 10 for head and cervical spine protection of the present invention may be configured to include a central airbag 100, a left-side airbag 200 located to the left of the central airbag 100, and a right-side airbag 300 located to the right of the central airbag.

The central airbag 100 is located between the left airbag 200 and the right airbag 300.

The central airbag 100 connects the left airbag 200 and the right airbag 300.

The user's head 910 is located in front of the central airbag 100. Therefore, the front surface of the central airbag 100 is located behind the user's head 910 and behind the cervical spine. Thus, the central airbag 100 protects the user's head 910 and cervical spine.

The left-side airbag 200 is located to the left of the central airbag 100 and may consist of a first left-side airbag 210 and a second left-side airbag 220.

The first left-side airbag 210 is connected to the left side of the central airbag 100, and its front surface is positioned to protrude further forward than the front surface of the central airbag 100.

The second left-side airbag 220 extends downward from the lower part of the first left-side airbag 210, and the rear surface of the second left-side airbag 220 is located further forward than the front surface of the central airbag 100.

As illustrated in Figures 8 and 9, the right side of the first left-side airbag 210 is located to the left of the user's head 910. Therefore, the first left-side airbag 210 has a shape that surrounds the left side of the user's head 910.

The longitudinal centerline of the first left-side airbag 210 is formed to tilt downwards as it approaches the front of the first left-side airbag 210.

In that case, the longitudinal centerline of the first left airbag 210 may be formed such that it tilts downwards as it moves forward, within a range greater than 0° and less than or equal to 20°, with the user 900 looking forward as the centerline.

The longitudinal centerline of the first left-side airbag 210 is a hypothetical line extended in the longitudinal direction of the first left-side airbag 210, passing through the center point of the cross-section of the first left-side airbag 210.

Furthermore, the longitudinal centerline of the first left-side airbag 210 extends forward and downward for a certain distance, and has a shape that extends downward.

The first left-side airbag 210 is provided so as to protrude forward from the left side of the central airbag 100, with its right side positioned to the left of the user's head 910.

The first left-side airbag 210 has its lower surface positioned above the left shoulder of the user 900.

The first left-side airbag 210, when inflated, has a streamlined, convex shape with its front, rear, left, right, and top surfaces all protruding. Therefore, the first left-side airbag 210 protects the user's head 910 by surrounding the left side of the user's head 910 from the outside.

The second left-side airbag 220 extends downward from the lower end of the first left-side airbag 210.

The longitudinal centerline of the second left airbag 220 is formed to tilt to the right as it extends below the second right airbag 320.

In that case, the longitudinal centerline of the second left airbag 220 may be formed such that it tilts downwards as it moves forward, within a range greater than 0° and less than or equal to 20°, with the user 900 looking forward as the centerline.

The longitudinal centerline of the second left airbag 220 is a hypothetical line extended longitudinally along the second left airbag 220, passing through the center point of its cross-section.

Furthermore, the longitudinal centerline of the second left airbag 220 extends forward and downward for a certain distance, and has a shape that extends downward.

The second left-side airbag 220, when inflated, has a streamlined, convex shape with its front, rear, left, right, and bottom surfaces all protruding in a curved manner.

The second left-side airbag 220 extends downward from the first left-side airbag 210 such that its rear surface is positioned in front of the left chest of the user 900.

As mentioned above, the rear surface of the second left-side airbag 220 is located in front of the left side of the user's chest. Therefore, the second left-side airbag 220 has a shape that surrounds the left side of the user's chest.

Furthermore, the longitudinal centerline of the second left airbag 220 is formed to tilt to the right as it extends below the second right airbag 320. This allows the second left airbag 220 to more firmly surround the left side of the user's chest, thereby effectively protecting the user's upper body.

The right-side airbag 300 is located to the right of the central airbag 100 and may consist of a first right-side airbag 310 and a second right-side airbag 320.

The first right-side airbag 310 is connected to the right side of the central airbag 100, and its front surface is positioned to protrude further forward than the front surface of the central airbag 100.

The second right-side airbag 320 extends downward from the lower part of the first right-side airbag 310, and the rear surface of the second right-side airbag 320 is positioned forward of the front surface of the central airbag 100.

As illustrated in Figures 8 and 9, the left side of the first right-side airbag 310 is located to the right of the user's head 910. Therefore, the first right-side airbag 310 has a shape that surrounds the left side of the user's head 910.

The longitudinal centerline of the first right-side airbag 310 is formed to tilt downwards as it approaches the front of the first right-side airbag 310.

The longitudinal centerline of the first right-side airbag 310 is a hypothetical line extended in the longitudinal direction of the first right-side airbag 310, passing through the center point of the cross-section of the first right-side airbag 310.

Furthermore, the longitudinal centerline of the first right-side airbag 310 extends forward and downward for a certain distance, and has a shape that extends downward.

The first right-side airbag 310 is provided so as to protrude forward from the right side of the central airbag 100, with its left side positioned to the right of the user's head 910.

The first right-side airbag 310 has its lower surface positioned above the right shoulder of the user 900.

The first right-side airbag 310, when inflated, has a streamlined, convex shape with its front, rear, left, right, and top surfaces all protruding. Therefore, the first right-side airbag 310 protects the user's head 910 by surrounding the right side of the user's head 910 from the outside.

The second right-side airbag 320 extends downward from the lower end of the first right-side airbag 310.

The longitudinal centerline of the second right-side airbag 320 is formed to tilt to the left as it approaches the bottom of the second right-side airbag 320.

The longitudinal centerline of the second right-side airbag 320 is a hypothetical line extended in the longitudinal direction of the second right-side airbag 320, passing through the center point of the cross-section of the second right-side airbag 320.

Furthermore, the longitudinal centerline of the second right-side airbag 320 extends forward and downward for a certain distance, and has a shape that extends downward.

The second right-side airbag 320, when inflated, has a streamlined, convex shape with its front, rear, left, right, and bottom surfaces all protruding.

The second right-side airbag 320 extends downward from the first right-side airbag 310 such that its rear surface is positioned in front of the user's right chest.

As mentioned above, the rear surface of the second right-side airbag 320 is located in front of the user 900's right chest. Therefore, the second right-side airbag 320 has a shape that surrounds the user 900's right chest.

Furthermore, the longitudinal centerline of the second right-side airbag 320 is formed to tilt to the left as it approaches the bottom of the second right-side airbag 320. This allows the second right-side airbag 320 to more firmly surround the right side of the user's chest, thereby effectively protecting the user's upper body.

The centerline of the central airbag 100 is the line that passes vertically through the left and right center points of the central airbag 100. The centerline of the central airbag 100 is the same as the centerline of the head protection and cervical spine protection airbags 10.

The first left airbag 210 and the first right airbag 310 are mirror-symmetric to each other with respect to the center line of the central airbag 100, and the second left airbag 220 and the second right airbag 320 are mirror-symmetric to each other with respect to the center line of the central airbag 100.

Therefore, the left airbag 200 and the right airbag 300 are mirror images of each other, and have identical shapes on both sides.

The cross-sectional area of the central airbag 100 is the same.

The cross-sectional area of the first left airbag 210 and the first right airbag 310 increases and decreases as you move towards the bottom of each airbag.

The cross-sectional area of the second left airbag 220 and the second right airbag 320 decreases as they move towards the bottom.

The maximum cross-sectional areas of the central airbag 100, the first left airbag 210 and the first right airbag 310, the second left airbag 220 and the second right airbag 320 satisfy the relationship: "Maximum cross-sectional area S2 of the first left airbag 210 and the first right airbag 310 > Maximum cross-sectional area S1 of the central airbag 100 > Maximum cross-sectional area S3 of the second left airbag 220 and the second right airbag 320."

The cross-sectional area of the left airbag 200 gradually increases from the portion connected to the central airbag 100 to the end portion, starting from the cross-sectional area S1 of the connecting portion (the maximum cross-sectional area S1 of the central airbag 100), passing the peak portion's cross-sectional area S2 (the maximum cross-sectional area S2 of the first left airbag 210 and the first right airbag 310), and then gradually decreasing until it becomes smaller than the cross-sectional area S1 of the connecting portion (the maximum cross-sectional area S1 of the central airbag 100), including the end portion's cross-sectional area S3 (the maximum cross-sectional area S3 of the second left airbag 220 and the second right airbag 320). In this case, the left and right sides of the user's head 910 are positioned within the peak portion's cross-sectional area S2 (the maximum cross-sectional area S2 of the first left airbag 210 and the first right airbag 310), thus ensuring complete protection of the user's head 910.

As described above, the cross-sectional area of the first left airbag 210 and the first right airbag 310 increases and decreases towards the bottom of each airbag. This positioning ensures that the right side of the first left airbag 210 and the left side of the first right airbag 310 are close to the left and right sides of the head 910. This allows the inflation of the first left airbag 210 and the first right airbag 310 to be maintained at a higher level, resulting in more effective impact absorption through the first left airbag 210 and the first right airbag 310. This effectively prevents impact to the user's head 910.

Space SP is formed in front of the central airbag 100, to the right of the left airbag 200 (or the first left airbag 210), and to the left of the right airbag 300 (or the first right airbag 310).

In other words, the space SP is located to the right of the first left airbag 210 and to the left of the second right airbag 320, and is surrounded by the central airbag 100, the first left airbag 210, and the first right airbag 310.

In such a space SP, the user's head 910 will be located, and through this, the head 910 will be surrounded by the central airbag 100, the right side of the left airbag 200 (or the first left airbag 210), and the right airbag 300 (or the first right airbag 310).

The head and cervical spine protection airbag 10 may further include a left inflatable 223, a right inflatable 323, a left gas cartridge 221, a right gas cartridge 321, a left vent hole 211, and a right vent hole 311.

The left-side inflatable 223 is mounted on the rear side of the second left-side airbag 220.

The left-side gas cartridge 221 is connected to the left-side inflator 223 and is mounted on the rear side of the second left-side airbag 220.

If, while the user 900 is wearing the head and cervical spine protection airbags 10, an impact is applied to the head and cervical spine protection airbags 10 or the left-side inflatable 223, or if the user 900 falls and a fall detection sensor (not shown) detects the user 900's fall, the left-side inflatable 223 will inject gas from the left-side gas cartridge 221 into the left-side airbag 200, causing the left-side airbag 200 to inflate.

For example, the sensor may be provided on the left inflatable 223. In that case, the sensor may detect an impact on the left inflatable 223 or detect that the left inflatable 223 is falling.

The right-side inflatable 323 is mounted on the rear side of the second right-side airbag 320.

The right-side gas cartridge 321 is connected to the right-side inflator 323 and is mounted on the rear side of the second right-side airbag 320.

If, while the user 900 is wearing the head and cervical spine protection airbags 10, an impact is applied to the head and cervical spine protection airbags 10 or the right-side inflatable 323, or if the user 900 falls and a fall detection sensor (not shown) detects the user 900's fall, the right-side inflatable 323 will inject gas from the right-side gas cartridge 321 into the left-side airbag 200, inflating the right-side airbag 300.

The sensor may be provided on the right-side inflatable 323. In this case, the sensor may detect an impact on the right-side inflatable 323 or detect that the right-side inflatable 323 is falling.

The left-side vent hole 211 is located on the left side of the first left-side airbag 210.

The left-side vent hole 211 functions to expel gas to the outside of the first left-side airbag 210 when the first left-side airbag 210 is inflated with gas and subjected to impact.

As the gas from the first left airbag 210 is exhausted to the outside, the gas from the second left airbag 220 is also exhausted to the outside. In other words, the left vent hole 211 functions to exhaust the gas from the left airbag 200 to the outside.

The right-side vent hole 311 is provided on the right side of the first right-side airbag 310.

The right-side vent hole 311 functions to expel gas to the outside of the first right-side airbag 310 when the first right-side airbag 310 is inflated with gas and subjected to impact.

As the gas from the first right-side airbag 310 is exhausted to the outside, the gas from the second right-side airbag 320 is also exhausted to the outside. In other words, the right-side vent hole 311 functions to exhaust the gas from the right-side airbag 300 to the outside.

The head and cervical spine protection airbags 10 are designed so that if the user 900 falls or an impact is applied to the head and cervical spine protection airbags 10, sensors will detect the user 900's fall or impact. If the sensors detect the user 900's fall or impact, the left inflator 223 and the right inflator 323 will supply compressed gas into the left airbag 200 (i.e., the first left airbag 210 and the second left airbag 220) and the right airbag 300 (i.e., the first right airbag 310 and the second right airbag 320).

When gas is supplied to the left airbag 200 and the right airbag 300, the left airbag 200, the right airbag 300, and the central airbag 100, which is connected to the left airbag 200 and the right airbag 300, all inflate.

Subsequently, if the user 900 falls and the head and cervical spine protection airbags 10 hit the ground, the external impact is transmitted to the head and cervical spine protection airbags 10. The gas supplied to the central airbag 100, left-side airbag 200, and right-side airbag 300 is then expelled to the outside through the left-side vent hole 211 and right-side vent hole 311. Therefore, the impact is absorbed by the central airbag 100, left-side airbag 200, and right-side airbag 300, preventing injury to the user.

Thus, when the head protection and cervical spine protection airbags 10 collide with the ground, the arrangement of the left vent hole 211 on the left side of the first left airbag 210 of the left airbag 200, and the right vent hole 311 on the right side of the first right airbag 310 of the right airbag 300, offers the following advantages.

When user 900 collides with the ground, the first left airbag 210 and the first right airbag 310 are positioned between the ground and user 900. Therefore, the left side of the first left airbag 210 and the right side of the first right airbag 310 do not come into contact with the ground. Consequently, the left vent hole 211 and the right vent hole 311 do not directly contact the ground, allowing for smooth discharge of the internal gases from the central airbag 100, the left airbag 200, and the right airbag 300.

Furthermore, since the left vent hole 211 and the right vent hole 311 do not come into direct contact with the user's body 900, the internal gases of the central airbag 100, the left airbag 200, and the right airbag 300 can be discharged smoothly.

Furthermore, when the user 900 collides with the ground, the impact from the collision is transmitted vertically to the user 900. However, since the internal gas of the central airbag 100, the left airbag 200, and the right airbag 300 is expelled to the outside via the left side of the first left airbag 210 and the right side of the first right airbag 310, the impact is transmitted horizontally to the outside. Therefore, the impact transmitted to the user 900 can be minimized.

It is desirable that the height of the central airbag 100 be formed to be higher than the height of the user's head 910. This is because if the height of the central airbag 100 is higher than the height of the user's head 910, the user's head 910 will not protrude above the central airbag 100, thus providing more effective head protection.

As mentioned above, it is desirable that the top of the central airbag 100 be positioned higher than the user's head 910, or the top of the user's head. That is, it is desirable that the top of the user's head 910 be positioned lower than the top of the central airbag 100.

The central airbag 100, the left airbag 200, and the right airbag 300 have a single internal space that communicates with each other, and gas is supplied to this communicating internal space for inflation.

The airbag 10 for head and cervical spine protection may further include a left-side zipper 225 and a right-side zipper 325.

The left-side zipper 225 may be provided on the left side of the second left-side airbag 220.

The right-side zipper 325 may be provided on the right side of the second right-side airbag 320.

The left zipper 225 and the right zipper 325 are opened to allow the inflatable members (not shown) to be easily stored inside the head protection and cervical spine protection airbags 10.

The inflatable member is inflated by compressed gas supplied by the left inflator 223 and the right inflator 323. As the inflatable member expands, the central airbag 100, the left airbag 200, and the right airbag 300 inflate.

The expansion member can also be made of a material such as TPU (thermoplastic polyurethane).

The aforementioned inflatable members are necessary components for the head and cervical spine protection airbags 10, where the central airbag 100, left-side airbag 200, and right-side airbag 300 perform the function of an outer covering.

In other words, when the central airbag 100, left airbag 200, and right airbag 300 of the head protection and cervical spine protection airbag 10 inflate themselves, a separate inflation member and the left zipper 225 and right zipper 325 are not required. However, when the inflation member inflates and the central airbag 100, left airbag 200, and right airbag 300 inflate, a separate inflation member and the left zipper 225 and right zipper 325 are required.

As illustrated in Figure 10, the head protection and cervical spine protection airbags 10 can be implemented in a form that is housed inside a housing 800, which has a vest-like shape and is detachable from the harness 810.

The head and cervical spine protection airbags 10, provided in the housing 800, inflate as shown in Figure 11 by the supply of compressed gas from the left inflator 223 and the right inflator 323.

To facilitate the smooth inflation of the head and cervical spine protection airbags 10, the housing 800 containing the head and cervical spine protection airbags 10 may include an airbag discharge section 820, such as a zipper, which is configured to be easily detached upon inflation of the head and cervical spine protection airbags 10.

As mentioned above, when the airbags 10 for head and cervical spine protection are incorporated into clothing such as the housing 800, there is an advantage in that the housing 800 can be detachably attached to the harness 810, making it easy for the user 900 to wear.

The airbags 10 for head and cervical spine protection can be attached to and equipped not only in the aforementioned housing 800, but also in other clothing and bags worn by the user 900, thus being implemented as safety equipment.

The sensor is mounted on the housing 800 and is also positioned on the back, just below the user 900's neck.

The method for manufacturing the airbag 10 for head protection and cervical spine protection of the present invention will be described below with reference to Figures 12 to 16.

Figure 12 is a schematic diagram of the manufacturing method for the head protection and cervical spine protection airbag of the present invention; Figure 13 is a diagram illustrating the front member; Figure 14 is a diagram illustrating the back member; Figure 15 is a diagram illustrating the left and right rings; and Figure 16 is a diagram illustrating the state in which the left and right rings are connected to the inside of the left and right holes, respectively, of the front member shown in Figure 13.

In the description below, the airbags 10 for head protection and cervical spine protection are described as being formed based on the front member 500. The parts that are folded towards the first central part 510 and the second central part 610 are the first left side portion 520 and the second left side portion 620, and the first right side portion 530 and the second right side portion 630. That is, in the description below, the configuration of the rear member 600 corresponding to the front member 500 may be omitted, but it can be understood that the configurations of the front member 500 and the rear member 600 are formed together.

As illustrated in Figure 12, the manufacturing method of the airbag 10 for head protection and cervical spine protection of the present invention includes a member provisioning step (S10) of providing a front member 500 including a first central part 510, a first left side part 520 and a first right side part 530, and a back member 600 including a second central part 610, a second left side part 620 and a second right side part 630 having the same shape as the first central part 510, the first left side part 520 and the first right side part 530 respectively; a ring coupling step (S20) of coupling a left ring 710 behind the left hole 540 and a right ring 720 behind the right hole 550; a member coupling step (S30) of coupling the front member 500 and the back member 600 in the front-rear direction; and the first left side part 520 and the first right side The system may be configured to include an airbag forming step (S40) in which each of the sections 530 is folded toward the first central part 510 and then joined to form the central airbag 100, the left airbag 200, and the right airbag 300; an inflation member insertion step (S50) in which inflation members are inserted into the central airbag 100, the left airbag 200, and the right airbag 300 via the left zipper 225 or the right zipper 325; and an inflation connecting step (S60) in which the left inflator 223, with the left gas cartridge 221 attached, is connected to the left inflation hole 623, and the right inflator 323, with the right gas cartridge 321 attached, is connected to the right inflation hole 633.

As illustrated in Figures 13 and 14, in the member installation stage (S10), the process of installing a front member 500 including a first central part 510, a first left side part 520, and a first right side part 530, and a rear member 600 including a second central part 610, a second left side part 620, and a second right side part 630 having the same shape as the first central part 510, the first left side part 520, and the first right side part 530, is carried out.

The front member 500 may be composed of a first central part 510, a first left side portion 520 formed to the left of the first central part 510 and having a first left side projection 521 projecting downward from the first central part 510, a first right side portion 530 formed to the right of the first central part 510 and having a first right side projection 531 projecting downward from the first central part 510, a left side hole 540 formed to the left of the center line C1 of the first central part 510, a right side hole 550 formed to the right of the center line C1 of the first central part 510, a first left side groove 561 formed above the left side hole 540, and a first right side groove 571 formed above the right side hole 550.

A first left-side portion 520 is formed to the left of the first central portion 510, and a first right-side portion 530 is formed to the right of the first central portion 510.

The first left-side projection 521 is formed at the lower part of the first left-side portion 520. The first left-side projection 521 protrudes downward from the first central portion 510.

The first right-side projection 531 is formed at the lower part of the first right-side portion 530. The first right-side projection 531 protrudes downward from the first central portion 510.

With respect to the center line C1 of the first central part 510, the first left-side part 520 and the first right-side part 530 have a mirror-symmetrical shape.

The left-side hole 540 is formed to the left of the center line C1 of the first center 510.

The left-side hole 540 is formed across the first central part 510 and the first left-side part 520.

The left-side region of the left-side hole 540 is formed in the first left-side portion 520, and the right-side region of the left-side hole 540 is formed in the first central portion 510.

The first left-side groove 561 is formed in the upper part of the left-side hole 540. More specifically, the first left-side groove 561 is formed between the first central part 510 and the first left-side portion 520. That is, the first left-side groove 561 serves as a reference point for separating the first central part 510 and the first left-side portion 520. Therefore, with respect to the first left-side groove 561, the first left-side portion 520 is located to the left, and with respect to the first left-side groove 561, the first central part 510 is located to the right.

The right-side hole 550 is formed to the right of the center line C1 of the first center 510.

The right-side hole 550 is formed across the first central part 510 and the first right-side portion 530.

The right-side region of the right-side hole 550 is formed in the first right-side portion 530, and the left-side region of the right-side hole 550 is formed in the first central portion 510.

The first right-side groove 571 is formed in the upper part of the right-side hole 550. More specifically, the first right-side groove 571 is formed between the first central part 510 and the first right-side portion 530. That is, the first right-side groove 571 serves as a reference point for separating the first central part 510 and the first right-side portion 530. Therefore, with respect to the first right-side groove 571, the first right-side portion 530 is located to the right, and with respect to the first right-side groove 571, the first central part 510 is located to the left.

The rear member 600 may be configured to include a second central part 610 having the same shape as the first central part 510, a second left-side part 620 having the same shape as the first left-side part 520, a second right-side part 630 having the same shape as the first right-side part 530, a second left-side groove 562 formed at the upper part of the boundary between the second central part 610 and the second left-side part 620 so as to be located at a position corresponding to the first left-side groove 561, and a second right-side groove 572 formed at the upper part of the boundary between the second central part 610 and the second right-side part 630 so as to be located at a position corresponding to the first right-side groove 571.

Figure 13 shows the front surface of the front member 500, while Figure 14 shows the rear surface of the rear member 600. Therefore, the left-right directions in Figures 13 and 14 are reversed.

The second central part 610 is located behind the first central part 510 when the front member 500 and the rear member 600 are joined together.

The second left-side portion 620 is located behind the first left-side portion 520 when the front member 500 and the rear member 600 are joined together.

The second right-side portion 630 is located behind the first right-side portion 530 when the front member 500 and the rear member 600 are joined together.

The second left-side portion 620 is provided with a second left-side projection 621 having the same shape as the first left-side projection 521.

The second right-side portion 630 is provided with a second right-side projection 631 having the same shape as the first right-side projection 531.

A second left-side portion 620 is formed to the left of the second central portion 610, and a second right-side portion 630 is formed to the right of the second central portion 610.

The second left-side projection 621 is formed at the lower part of the second left-side portion 620. The second left-side projection 621 protrudes downward from the second central portion 610.

The second right-side projection 631 is formed at the lower part of the second right-side portion 630. The second right-side projection 631 protrudes downward from the second central portion 610.

With respect to the center line C2 of the second central part 610, the second left-side part 620 and the second right-side part 630 have a mirror-symmetric shape.

The second left-side groove 562 is formed between the second center 610 and the second left-side portion 620. That is, the second left-side groove 562 serves as a reference point for separating the second center 610 and the second left-side portion 620. Therefore, with respect to the second left-side groove 562, the second left-side portion 620 is located to the left, and with respect to the second left-side groove 562, the second center 610 is located to the right. Such a second left-side groove 562 is located in a position corresponding to the first left-side groove 561 of the front member 500. Therefore, when the front member 500 and the back member 600 are joined, the first left-side groove 561 and the second left-side groove 562 form a single groove.

The second right-side groove 572 is formed between the second central part 610 and the second right-side portion 630. That is, the second right-side groove 572 serves as a reference point for separating the second central part 610 and the second right-side portion 630. Therefore, with respect to the second right-side groove 572, the second right-side portion 630 is located to the right, and with respect to the second right-side groove 572, the second central part 610 is located to the left. Such a second right-side groove 572 is located in a position corresponding to the first right-side groove 571 of the front member 500. Therefore, when the front member 500 and the back member 600 are joined, the first right-side groove 571 and the second right-side groove 572 form a single groove.

The back panel 600 may be composed of a left-side inflation hole 623, a right-side inflation hole 633, a left-side vent hole 211, a right-side vent hole 311, a left-side zipper 225, and a right-side zipper 325.

The left-side inflation hole 623 is a hole through which the gas injection port of the left-side inflation 223 is connected. Therefore, the left-side inflation 223 can supply compressed gas to the left-side airbag 200 via the left-side inflation hole 623.

The left-side inflatable section 223 is directly fastened to the rear member 600 via the left-side inflatable hole 623, without the need for hoses or other fasteners.

The right-side inflation hole 633 is a hole to which the gas injection port of the right-side inflation 323 is connected. Therefore, the right-side inflation 323 can supply compressed gas to the right-side airbag 300 via the right-side inflation hole 633.

The right-side inflatable section 323 is directly fastened to the rear member 600 via the right-side inflatable hole 633, without the need for hoses or other fasteners.

The left zipper 225 is formed on the second left projection 621, and the right zipper 325 is formed on the second right projection 631.

The left vent hole 211 is formed in the upper part of the second left section 620, and the right vent hole 311 is formed in the upper part of the second right section 630.

As described above, once the front member 500 and the rear member 600 are installed, the member installation stage (S10) is completed.

Once the component installation stage (S10) is completed, the ring joining stage (S20) is performed.

In the ring joining stage (S20), as illustrated in Figures 15 and 16, the left ring 710 is joined behind the left hole 540, and the right ring 720 is joined behind the right hole 550.

In this case, the left ring 710 is attached behind the left hole 540 so that its center point coincides with the center point of the left hole 540, and the right ring 720 is attached behind the right hole 550 so that its center point coincides with the center point of the right hole 550.

The left ring 710 and the right ring 720 support the first left portion 520, the first right portion 530, and the first central portion 510 during the airbag formation stage (S40), thereby facilitating the folding of the first left portion 520 and the first right portion 530.

The left ring 710 and the right ring 720 can be joined to the rear of the left hole 540 and the rear of the right hole 550, respectively, by sewing, heat sealing, adhesive, or the like.

As described above, the ring coupling stage (S20) is completed when the left ring 710 and the right ring 720 are coupled to the rear of the left hole 540 and the rear of the right hole 550, respectively.

After the ring joining stage (S20) is completed, the member joining stage (S30) is performed.

In the component joining stage (S30), the process of joining the front member 500 and the rear member 600 in the front-rear direction is carried out.

The front member 500 and the back member 600 can be joined together by sewing, heat sealing, adhesive, or other means.

The front member 500 and the rear member 600 are joined together such that the center line C1 of the first central part 510 and the center line C2 of the second central part 610 coincide with each other.

Since the front member 500 and the rear member 600 have the same overall shape, the combined structure of the front member 500 and the rear member 600 will also have the same overall shape as the front member 500 and the rear member 600.

Once the front member 500 and the rear member 600 are joined, the member joining stage (S30) is completed.

After the component joining stage (S30) is completed, the airbag formation stage (S40) is performed.

In the airbag formation stage (S40), the following steps are performed: the member joining stage (S30), and the process of joining the first left portion 520 and the first right portion 530 after folding them toward the first central portion 510, thereby forming the central airbag 100, the left airbag 200, and the right airbag 300.

In detail, the process involves folding the first left portion 520 toward the first center 510 using a left reference line L1 that passes through the first left groove 561 and the center point of the left hole 540 as a reference, then joining the first left arc 541 and the second left arc 542 of the left hole 540 to form the left airbag 200 to the left of the first center 510. Then, folding the first right portion 530 toward the first center 510 using a right reference line L2 that passes through the first right groove 571 and the center point of the right hole 550 as a reference, then joining the first right arc 551 and the second right arc 552 of the right hole 550 to form the right airbag 300 to the right of the first center 510. Finally, a central airbag 100, formed by the first center 510, is created between the left airbag 200 and the right airbag 300.

To form the left-side airbag 200, in the state shown in Figure 13, the first left-side portion 520 is folded towards the first center portion 510, using the left-side reference line L1 as a reference. That is, the first left-side portion 520 is folded towards the right.

The left-side reference line L1 is a hypothetical line passing through the first left-side groove 561 and the center point of the left-side hole 540, and forms the boundary between the central airbag 100 and the left-side airbag 200.

Furthermore, when the first left portion 520 is folded towards the first central portion 510, the left region of the left ring 710 is folded in overlapping manner so that it is positioned in front of the right region of the left ring 710. Therefore, when the first left portion 520 is folded towards the first central portion 510, the left ring 710 functions as a structural support for both the first left portion 520 and the first central portion 510, further facilitating the folding of the first left portion 520.

If the first left side portion 520 is folded towards the first central portion 510, the first left side arc 541 and the second left side arc 542 of the left side hole 540 will be joined together. The first left side arc 541 and the second left side arc 542 can be joined together by sewing, heat sealing, adhesive, or other means.

The first left-side arc 541 is the arc that forms the left side of the left-side hole 540 with respect to the left-side reference line L1, and the second left-side arc 542 is the arc that forms the right side of the left-side hole 540 with respect to the left-side reference line L1. The first left-side arc 541 and the second left-side arc 542 are mutually mirror-symmetric with respect to the left-side reference line L1 and have a semicircular shape.

As described above, when the first left-side arc 541 and the second left-side arc 542 are joined, the left-side airbag 200 is formed, as shown in Figures 1 to 4.

The first left-side airbag 210 is shaped by the upper regions of the first left-side portion 520 and the second left-side portion 620, and the second left-side airbag 220 is shaped by the first left-side protrusion 521 and the second left-side protrusion 621.

To form the right-side airbag 300, in the state shown in Figure 13, the first right-side portion 530 is folded towards the first center portion 510, using the right-side reference line L2 as a reference. That is, the first left-side portion 520 is folded towards the left.

The right-side reference line L2 is a hypothetical line passing through the first right-side groove 571 and the center point of the right-side hole 550, and forms the boundary between the central airbag 100 and the right-side airbag 300.

Furthermore, when the first right-side portion 530 is folded towards the first central portion 510, the right-side region of the right-side ring 720 is folded in overlapping manner so that it is positioned in front of the left-side region of the right-side ring 720. Therefore, when the first right-side portion 530 is folded towards the first central portion 510, the right-side ring 720 functions as a structural support for both the first right-side portion 530 and the first central portion 510, further facilitating the folding of the first right-side portion 530.

If the first right-side portion 530 is folded toward the first central portion 510, the first right-side arc 551 and the second right-side arc 552 of the right-side hole 550 will be joined together. The first right-side arc 551 and the second right-side arc 552 can be joined together by sewing, heat sealing, adhesive, or other means.

The first right-side arc 551 is the arc that forms the right side of the right-side hole 550 with respect to the right-side reference line L2, and the second right-side arc 552 is the arc that forms the left side of the right-side hole 550 with respect to the right-side reference line L2. The first right-side arc 551 and the second right-side arc 552 are mutually mirror-symmetric with respect to the right-side reference line L2 and have a semicircular shape.

As described above, when the first right-side arc 551 and the second right-side arc 552 are joined, the right-side airbag 300 is formed, as shown in Figures 1 to 4.

The first right-side airbag 310 is shaped by the upper regions of the first right-side portion 530 and the second right-side portion 630, and the second right-side airbag 320 is shaped by the first right-side protrusion 531 and the second right-side protrusion 631.

The central airbag 100 is formed between the left airbag 200 and the right airbag 300, as the left airbag 200 and the right airbag 300 are formed.

The central airbag 100 is shaped by a first central portion 510 and a second central portion 610.

As described above, the first left portion 520 is folded to the right and then joined, and the second right portion 630 is folded to the left and then joined, so that in the central airbag 100, the left airbag 200 and the right airbag 300, which fold forward, can be formed in a 3D shape.

As described above, after the airbag formation stage (S40) is completed, the inflation member insertion stage (S50) is performed.

In the inflation member insertion stage (S50), the process of inserting the inflation member into the central airbag 100, the left airbag 200, and the right airbag 300 is carried out via the left zipper 225 or the right zipper 325.

The expansion member may be formed so that its overall shape is identical to that of the front member 500 or the rear member 600.

The inflatable member can be easily inserted into the central airbag 100, the left airbag 200, and the right airbag 300 via the left zipper 225 or the right zipper 325.

As described above, once the inflatable members are inserted into the central airbag 100, the left airbag 200, and the right airbag 300, the inflatable member insertion stage (S50) is completed.

The inflatable member insertion step (S50) is performed when the central airbag 100, left airbag 200, and right airbag 300 of the head protection and cervical spine protection airbag 10 perform their outer covering functions. It may be omitted when the central airbag 100, left airbag 200, and right airbag 300 themselves are inflated.

After the expansion member insertion stage (S50) is completed, the inflation connection stage (S60) is performed.

In the inflation connection stage (S60), the left inflation 223, with the left gas cartridge 221 attached, is connected to the left inflation hole 623, and the right inflation 323, with the right gas cartridge 321 attached, is connected to the right inflation hole 633.

The left-side inflation hole 623 is located in a position corresponding to the left-side hole formed on the rear surface of the inflation member.

The gas injection port of the left-side inflatable 223 is connected to the left-side inflatable hole 623 and the left-side hole, thereby interconnecting the left-side inflatable hole 623 and the left-side inflatable 223.

In the case where the central airbag 100, left airbag 200, and right airbag 300 of the head protection and cervical spine protection airbag 10 do not perform an outer covering function, and the central airbag 100, left airbag 200, and right airbag 300 themselves inflate, no separate inflation member is required. Therefore, the gas injection port of the left inflator 223 is directly connected to the left inflator hole 623.

As described above, by interconnecting the left-side inflation hole 623 and the left-side inflation 223, the compressed gas from the left-side gas cartridge 221 can be supplied (or injected) into the left-side airbag 200 via the left-side inflation hole 623 through the left-side inflation 223.

The right-side inflation hole 633 is located in a position corresponding to the right-side hole formed on the rear surface of the inflation member.

The gas injection port of the left inflator 223 is connected to the right inflator hole 633 and the right hole, thereby interconnecting the right inflator hole 633 and the right inflator 323.

In the case where the central airbag 100, left airbag 200, and right airbag 300 of the head protection and cervical spine protection airbag 10 do not perform an outer covering function, and the central airbag 100, left airbag 200, and right airbag 300 themselves inflate, no separate inflation member is required. Therefore, the gas injection port of the right inflator 323 is directly connected to the right inflator hole 633.

As described above, by connecting the right-side inflation hole 633 and the right-side inflation 323, the compressed gas from the right-side gas cartridge 321 can be supplied (or injected) into the right-side airbag 300 via the right-side inflation hole 633 through the right-side inflation 323.

The aforementioned method for manufacturing the head and cervical spine protection airbag 10 has the advantage of easily forming a 3D shape of the head and cervical spine protection airbag 10 that can protect the user's head 910 and cervical spine by folding the first left portion 520 and the second right portion 630 toward the first central portion 510 and then joining them.

The first left groove 561 and the second left groove 562, and the first right groove 571 and the second right groove 572, allow the first left portion 520 and the second left portion 620, and the first right portion 530 and the second right portion 630 to be easily folded in the direction of the first central portion 510 and the second central portion 610, enabling the easy manufacture of the 3D shape of the airbag for head protection and cervical spine protection.

When the first left portion 520 and the second left portion 620, and the first right portion 530 and the second right portion 630 are folded in the direction of the first central portion 510 and the second central portion 610 via the left ring 710 and the right ring 720, they can be easily folded, and the first left portion 520 and the second left portion 620, and the first right portion 530 and the second right portion 630 can be easily connected to the first central portion 510 and the second central portion 610.

As described above, the invention has been explained with reference to preferred embodiments. However, a person ordinary in the art could implement the invention in various modified or altered ways, within the scope of the idea and scope of the invention as described in the following claims.

Claims (3)

A front member comprising: a first central part; a first left side having a first left projection formed to the left of the first central part and projecting downward from the first central part; a first right side having a first right projection formed to the right of the first central part and projecting downward from the first central part; a left hole formed to the left with respect to the center line of the first central part; a right hole formed to the right with respect to the center line of the first central part; a first left groove formed above the left hole; and a back member comprising a second central part, a second left side, and a second right side having the same shape as the first central part, the first left side, and the first right side, respectively;
A coupling step of connecting the front member and the rear member in the front-rear direction,
A method for manufacturing airbags for head protection and cervical spine protection, comprising the steps of: folding the first left portion toward the first central part with reference to a left reference line passing through the center point of the first left groove and the left hole, then joining the first left arc and the second left arc of the left hole to form a left airbag to the left of the first central part; folding the first right portion toward the first central part with reference to a right reference line passing through the center point of the first right groove and the right hole, then joining the first right arc and the second right arc of the right hole to form a right airbag to the right of the first central part; and forming a central airbag consisting of the first central part between the left airbag and the right airbag. A method for manufacturing an airbag for head protection and cervical spine protection according to claim 1, further comprising a ring joining step, before the joining step, of joining the left ring behind the left hole so that the center point of the left ring coincides with the center point of the left hole, and joining the right ring behind the right hole so that the center point of the right ring coincides with the center point of the right hole. A method for manufacturing an airbag for head protection and cervical spine protection according to claim 2, wherein in the airbag formation step, when the first left portion is folded toward the first central portion, the left region of the left ring is folded in overlapping manner so as to be located in front of the right region of the left ring, and when the first right portion is folded toward the first central portion, the right region of the right ring is folded in overlapping manner so as to be located in front of the left region of the right ring.