KR20240032440A - Bracket for inflator and curtain airbag apparatus for vehicle comprising the same - Google Patents

Abstract

The present invention relates to an improved inflator bracket to reduce parts cost, manufacturing cost, and manufacturing time, and to a curtain airbag device for a vehicle including the same.
The inflator bracket is combined with the inflator that deploys the curtain airbag, has a bracket body fixed to the vehicle body, a fixing protrusion that protrudes from the bracket body and surrounds the inflator, and is arranged on the fixing protrusion along the direction in which the inflator is inserted into the fixing protrusion. Includes a stopper to secure the position.

Description

Bracket for inflator and curtain airbag device for vehicle including same {BRACKET FOR INFLATOR AND CURTAIN AIRBAG APPARATUS FOR VEHICLE COMPRISING THE SAME}

The present invention relates to an inflator bracket and a curtain airbag device for a vehicle including the same.

Generally, vehicles are equipped with various types of airbag devices to protect passengers in the event of an accident. Among them, the curtain airbag device is mounted on the side panel of the vehicle body and protects passengers by deploying the airbag cushion downward in the event of a vehicle rollover or side collision.

In this curtain airbag device, a folded curtain airbag in a circular shape is fixed to the inside of a lamp bracket that is usually placed on the upper part of the car body pillar, and when the folded curtain airbag is unfolded and deployed by the pressure of the gas generated from the inflator, the lamp is activated. The bracket guides the direction of deployment of the airbag cushion and serves to prevent interference between the airbag cushion and vehicle body trim.

At this time, the inflator that generates gas may be coupled to a bracket fixed to the vehicle body to prevent shaking. However, in the conventional inflator bracket, the inflator must be fixed to the inflator bracket through a separate fixing member, which increases component costs and manufacturing costs, and increases manufacturing time, thereby reducing productivity.

In addition, since the conventional bracket for an inflator does not include a means for controlling movement in the longitudinal direction of the inflator, there is a problem in that the operational stability of the inflator is not secured.

The present invention is to solve the above problems, and the purpose of an embodiment of the present invention is to provide an improved inflator bracket and a vehicle curtain airbag device including the same to reduce parts cost, manufacturing cost, and manufacturing time. It is provided.

In addition, an object of an embodiment of the present invention is to provide an improved bracket for an inflator to control the longitudinal movement of the inflator and a curtain airbag device for a vehicle including the same.

A bracket for an inflator according to an embodiment of the present invention is coupled to an inflator that deploys a curtain airbag, and includes a bracket body fixed to the vehicle body; and a fixing protrusion protruding from the bracket body and surrounding the inflator. and a stopper disposed on the fixing protrusion along a direction in which the inflator is inserted into the fixing protrusion to fix the position of the inflator. Includes.

The inner peripheral surface of the fixing protrusion is provided in a shape corresponding to the outer peripheral surface of the main body of the inflator, and the diameter of the inner peripheral surface of the fixing protrusion may be smaller than the diameter of the outer peripheral surface of the main body of the inflator.

The fixing protrusion includes: a first fixing protrusion disposed close to an outlet portion of the body of the inflator through which gas is discharged; and a second fixing protrusion disposed close to a connection part of the main body of the inflator; It includes, and the stopper may be disposed on the second fixing protrusion.

The stopper includes: a first protrusion protruding from a side of the second fixing protrusion that does not face the first fixing protrusion; and a second protrusion protruding from an end of the first protrusion to have a bent shape and contacting the main body of the inflator. may include.

The inner peripheral surface of the first protrusion may be provided in a shape corresponding to the shape of the inner peripheral surface of the second fixing protrusion.

In addition, a curtain airbag device for a vehicle according to an embodiment of the present invention includes a curtain airbag; an inflator coupled to the curtain airbag to supply gas into the curtain airbag; and an inflator bracket connecting the inflator to the vehicle body. It includes a bracket for the inflator, a bracket body coupled to the inflator that deploys the curtain airbag and fixed to the vehicle body; and a fixing protrusion protruding from the bracket body and surrounding the inflator. and a stopper disposed on the fixing protrusion along a direction in which the inflator is inserted into the fixing protrusion to fix the position of the inflator. may include.

The inner peripheral surface of the fixing protrusion is provided in a shape corresponding to the outer peripheral surface of the main body of the inflator, and the diameter of the inner peripheral surface of the fixing protrusion may be smaller than the diameter of the outer peripheral surface of the main body of the inflator.

The fixing protrusion includes: a first fixing protrusion disposed close to an outlet portion of the body of the inflator through which gas is discharged; and a second fixing protrusion disposed close to a connection part of the main body of the inflator; It includes, and the stopper may be disposed on the second fixing protrusion.

The stopper includes: a first protrusion protruding from a side of the second fixing protrusion that does not face the first fixing protrusion; and a second protrusion protruding from an end of the first protrusion to have a bent shape and contacting the main body of the inflator. It includes, and the stopper may be disposed on the second fixing protrusion.

In the body of the inflator, an exposed hole disposed at an end of a side that is not coupled to the curtain airbag and exposing a connection portion coupled to a connector that supplies power; is formed, and an end of the second protrusion may be disposed outside the exposure hole.

a coupling member coupled to the curtain airbag and the inflator bracket, and maintaining the coupled state of the curtain airbag and the inflator and the coupled state of the curtain airbag and the inflator bracket; It may further include a separation prevention protrusion that is disposed on a surface that is not in contact with the inflator and prevents the coupling member from being separated in the longitudinal direction of the inflator.

According to one embodiment of the present invention, the fixing protrusion is provided integrally with the bracket body, eliminating the need for a separate fixing member, thereby reducing the parts cost, manufacturing cost, and manufacturing time for providing a separate fixing member.

Additionally, according to an embodiment of the present invention, the operational stability of the inflator can be ensured by controlling the longitudinal movement of the inflator through the stopper.

Figure 1 is a perspective view showing a curtain airbag device for a vehicle according to an embodiment of the present invention.
Figure 2 is a diagram showing a state in which the inflator is separated from the inflator bracket.
Figure 3 is a diagram showing a bracket for an inflator.
Figure 4 is a diagram showing a state in which the inflator is coupled to the inflator bracket.
Figure 5 is an enlarged view of part A of Figure 4.
Figure 6 is a diagram showing the separation prevention protrusion of the bracket for the inflator.

Since the present invention can be subject to various changes and can have various embodiments, specific embodiments will be illustrated and described in the drawings. However, this is not intended to limit the present invention to specific embodiments, and should be understood to include all changes, equivalents, and substitutes included in the spirit and technical scope of the present invention.

Terms containing ordinal numbers, such as first, second, etc., may be used to describe various components, but the components are not limited by the terms. The above terms are used only for the purpose of distinguishing one component from another. For example, the second component may be referred to as the first component without departing from the scope of the present invention, and similarly, the first component may also be referred to as the second component. The term and/or includes any of a plurality of related stated items or a combination of a plurality of related stated items.

When a component is said to be "connected" or "connected" to another component, it is understood that it may be directly connected to or connected to the other component, but that other components may exist in between. It should be. On the other hand, when it is mentioned that a component is “directly connected” or “directly connected” to another component, it should be understood that there are no other components in between.

In the description of the embodiment, in the case where one component is described as being formed “on or under” another component, (on or under) includes both components that are in direct contact with each other or one or more other components that are formed (indirectly) between the two components. Additionally, when expressed as 'on or under', it can include not only the upward direction but also the downward direction based on one component.

The terms used in this application are only used to describe specific embodiments and are not intended to limit the invention. Singular expressions include plural expressions unless the context clearly dictates otherwise. In this application, terms such as “comprise” or “have” are intended to designate the presence of features, numbers, steps, operations, components, parts, or combinations thereof described in the specification, but are not intended to indicate the presence of one or more other features. It should be understood that this does not exclude in advance the possibility of the existence or addition of elements, numbers, steps, operations, components, parts, or combinations thereof.

Unless otherwise defined, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by a person of ordinary skill in the technical field to which the present invention pertains. Terms defined in commonly used dictionaries should be interpreted as having a meaning consistent with the meaning in the context of the related technology, and unless clearly defined in the present application, should not be interpreted in an ideal or excessively formal sense. No.

Hereinafter, an inflator bracket and a vehicle curtain airbag device including the same will be described in detail with reference to the attached drawings. However, regardless of the drawing numbers, identical or corresponding components are given the same reference numbers and duplicate descriptions thereof are omitted. Do this.

FIG. 1 is a perspective view showing a curtain airbag device for a vehicle according to an embodiment of the present invention, FIG. 2 is a view showing the inflator separated from the inflator bracket, and FIG. 3 is a view showing the inflator bracket. , FIG. 4 is a view showing the inflator coupled to the inflator bracket, FIG. 5 is an enlarged view of part A of FIG. 4, and FIG. 6 is a view showing the separation prevention protrusion of the inflator bracket.

Referring to Figures 1 to 6, the curtain airbag device 100 for a vehicle according to an embodiment of the present invention is coupled to the curtain airbag 120 and the curtain airbag 120 to supply gas inside the curtain airbag 120. The inflator 140, the inflator bracket 160 connecting the inflator 140 to the vehicle body, the first lamp bracket 180a holding one side of the curtain airbag 120, and the first lamp bracket 180a holding the other side of the curtain airbag 120. 2 May include a lamp bracket (180b).

The curtain airbag 120 may be disposed on the upper side of the front door (not shown) and the rear door (not shown) of the vehicle (not shown). The curtain airbag 120 may include a gas injection unit 121 and a deployment unit 122.

The gas injection unit 121 may be connected to the discharge unit 142 of the inflator 140, which will be described later. The gas injection unit 121 may be used as a passage through which the gas generated by the inflator 140 passes. The gas injection part 121 may be provided in a form surrounding the discharge part 142 of the inflator 140.

The deployment unit 122 may be connected to the gas injection unit 121. The deployment unit 122 may be provided folded into a rolled roll shape. The deployment unit 122 may be provided in a shape having a length along the longitudinal direction of the inflator 140. The deployment unit 122 may be deployed in a direction from the top to the bottom of the front door (not shown) or rear door (not shown) of the vehicle (not shown) by the gas passing through the gas injection unit 121.

The inflator 140 may be connected to the curtain airbag 120. The inflator 140 may be provided with an empty interior to accommodate a substance that generates gas.

The inflator 140 may include an inflator body 141, a discharge part 142, an exposure hole 143, and a connection part 144.

The inflator body 141 may be provided in a cylindrical shape. The inflator body 141 may be coupled to the inflator bracket 160. A generating unit (not shown) containing a material for generating gas may be disposed inside the inflator body 141. The inflator body 141 may be coupled to the inflator bracket 160 by moving in a direction from the first fixing protrusion 163a, which will be described later, toward the second fixing protrusion 163b of the inflator bracket 160.

The discharge unit 142 may be disposed at one end of the inflator body 141. The discharge unit 142 may have a plurality of holes arranged so that gas generated inside the inflator body 141 can be discharged to the outside of the inflator body 141. The discharge unit 142 may be connected to the gas injection unit 121 of the curtain airbag 120. The gas discharged through the discharge unit 142 may pass through the gas injection unit 121 of the curtain airbag 120 and move inside the deployment unit 122.

The exposed hole 143 may be disposed at an end of the inflator body 141 where the discharge portion 142 is disposed, that is, at an end on a side that is not coupled to the curtain airbag 120. The exposure hole 143 may be provided in a circular shape, but is not limited thereto. The exposure hole 143 may expose the connection portion 144 that is coupled to a connector (not shown) that supplies power.

The connection portion 144 may be exposed through the exposure hole 143. The connection portion 144 may be disposed inside the exposure hole 143. The connection unit 144 may be connected to a connector (not shown) of an external device (eg, a power supply). The connection unit 144 receives a signal transmitted from a connector (not shown) of an external device and sends a signal to the generating unit (not shown) to operate a generating unit (not shown) that generates the gas contained inside the inflator 140. It can be delivered.

The inflator bracket 160 may include a bracket body 161, a connection frame 162, a fixing protrusion 163, a stopper 164, and a separation prevention protrusion 165.

The bracket body 161 is coupled to the inflator 140 that deploys the curtain airbag 120, and may be fixed to the vehicle body (not shown). The inner peripheral surface of the bracket body 161 may be provided in a shape corresponding to the shape of the outer peripheral surface of the inflator main body 141. A separation prevention protrusion 165 may be disposed on one end of the bracket body 161, and a coupling portion coupled to the first lamp bracket 180a may be disposed on the other end. The coupling portion is provided in a shape that protrudes from the other end of the bracket body 161, and a portion of it may be provided in a bent shape.

The bracket body 161 may be fixed to the curtain airbag 120 through a coupling member (F). The coupling member (F) may be arranged to surround the bracket body 161 and the curtain airbag 120. The coupling member (F) may be a device or unit that can tighten an object, such as a clamp or cable tie. Through the coupling member F, the coupled state of the curtain airbag 120 and the inflator 140 and the coupled state of the curtain airbag 120 and the inflator bracket 160 can be maintained stably.

The connection frame 162 may be disposed on a portion of the bracket body 161. The connection frame 162 may be disposed between the first fixing protrusion 163a, which will be described later, and the separation prevention protrusion 165 among the fixing protrusions 163. A first coupling hole and a second coupling hole may be formed in the connection frame 162.

A portion of the push pin (P) may pass through the first coupling hole. The push pin (P) that has passed through the first coupling hole may be coupled to the vehicle body in a temporary coupling format. The push pin (P) can connect the connection frame 162 and the car body by passing through the first coupling hole to fix the position of the bracket body 161. A bolt (not shown) may pass through the second coupling hole.

When the push pin (P) passes through the first coupling hole and the connecting frame 162 is connected to the car body, a bolt (not shown) passes through the first coupling hole and the connecting frame 162 is fixed to the car body, the bracket body (161) The position where the car body is coupled can be fixed. At this time, the push pin (P) coupled in a temporary coupling type may serve to secure the connection frame 162 to the vehicle body together with a bolt (not shown).

The fixing protrusion 163 may protrude from the bracket body 161 and surround the inflator 140. More specifically, the fixing protrusion 163 may protrude from the connecting surface connecting the outer surface and the inner surface of the bracket body 161 in a direction from the outer surface to the inner surface of the bracket body 161. The fixing protrusion 163 may form one inner peripheral surface together with the bracket body 161. The fixing protrusion 163 may be provided integrally with the bracket body 161.

The inner peripheral surface of the fixing protrusion 163 may be provided in a shape corresponding to the outer peripheral surface of the inflator body 141. Therefore, when the inflator body 141 is coupled to the fixing protrusion 163, the fixing protrusion 163 can stably hold the inflator 140.

Additionally, the diameter of the inner peripheral surface of the fixing protrusion 163 may be smaller than the diameter of the outer peripheral surface of the inflator body 141. Accordingly, when the inflator body 141 is coupled to the fixing protrusion 163, the inflator main body 141 may be fitted into the fixing protrusion 163 in an interference fit format. Therefore, the fixing protrusion 163 can fix the inflator body 141 with strong fixing force.

The fixing protrusion 163 may include a first fixing protrusion 163a and a second fixing protrusion 163b. The first fixing protrusion 163a and the second fixing protrusion 163b may each be provided in a shape with one side cut out. The inner surfaces of the first fixing protrusions 163a and the second fixing protrusions 163b may be formed to have a curvature value corresponding to the curvature value of the inner peripheral surface of the bracket body 161.

The first fixing protrusion 163a may be disposed close to the discharge portion 142 of the inflator main body 141 when the inflator main body 141 is coupled to the fixing protrusion 163. The second fixing protrusion 163b may be disposed close to the connection portion 144 of the inflator main body 141 when the inflator main body 141 is coupled to the fixing protrusion 163. The second fixing protrusion 163b may be spaced apart from the first fixing protrusion 163a along the longitudinal direction of the bracket body 161.

The stopper 164 is disposed on the fixing protrusion 163 along the direction in which the inflator 140 is inserted into the fixing protrusion 163 (the direction from the first fixing protrusion 163a to the second fixing protrusion 163b) to secure the inflator. The position of (140) can be fixed. In more detail, the stopper 164 may be disposed on the second fixing protrusion 163b.

The stopper 164 may include a first protrusion 164a and a second protrusion 164b.

The first protrusion 164a may protrude from a side of the second fixing protrusions 163b that does not face the first fixing protrusion 163a. The first protrusion 164a may have a shape that protrudes from the second fixing protrusion 163b along the longitudinal direction of the bracket body 161. The first protrusion 164a may have a shape that protrudes in a direction perpendicular to the end of the second fixing protrusion 163b, but is not limited thereto. As shown in FIG. 4, the first protrusion 164a may contact the end of the inflator body 141 and support the end of the inflator body 141.

The first protrusion 164a may have an inner surface having a curvature value corresponding to the curvature value of the inner surface of the second fixing protrusion 163b. Accordingly, the support stability of the inflator 140 supported by the inflator bracket 160 through the first protrusion 164a can be improved.

The second protrusion 164b may protrude from an end of the first protrusion 164a to have a bent shape. More specifically, the second protrusion 164b may protrude from the end of the first protrusion 164a in a direction toward the inside of the second fixing protrusion 163b. The second protrusion 164b may contact the surface of the inflator body 141 where the exposure hole 143 is located.

As shown in FIG. 5, the end of the second protrusion 164b may be disposed outside the exposure hole 143. Additionally, the end of the second protrusion 164b may be formed in a shape corresponding to the edge shape of the exposure hole 143. Accordingly, when the connector (not shown) of the external device is coupled to the connection portion 144 of the inflator 140, the second protrusion 164b is prevented from contacting the connector (not shown), thereby preventing the inflator 140 A stable connection can be made between the connection portion 144 of and the connector (not shown) of the external device.

The separation prevention protrusion 165 may be disposed on a surface of the bracket body 161 that is not in contact with the inflator body 141, that is, on the outer surface of the bracket body 161. The separation prevention protrusion 165 may be provided in a shape having a length in a direction crossing the longitudinal direction of the bracket body 161. The separation prevention protrusion 165 may be disposed at an end of the bracket body 161 opposite to the end of the bracket body 161 on which the second fixing protrusion 163b is disposed.

As shown in FIG. 6, the separation prevention protrusion 165 may protrude from the outer surface of the bracket body 161 in a direction from the inner surface of the bracket body 161 toward the outer surface. Accordingly, the separation prevention protrusion 165 can prevent the coupling member F holding the inflator bracket 160 and the curtain airbag 120 from being separated. More specifically, the separation prevention protrusion 165 can prevent the coupling member (F) from being separated in the longitudinal direction of the inflator 140. Therefore, the coupled state of the curtain airbag 120 and the inflator 140 and the coupled state of the curtain airbag 120 and the inflator bracket 160 can be stably maintained through the separation prevention protrusion 165.

The first lamp bracket 180a and the second lamp bracket 180b can fix the roll-shaped deployment portion 122 of the curtain airbag 120. The first lamp bracket 180a and the second lamp bracket 180b may be provided in the shape of a square bar with one side open. The first lamp bracket 180a and the second lamp bracket 180b may be provided with an empty interior so as to accommodate the deployment portion 122 of the curtain airbag 120. Therefore, when the deployment portion 122 of the curtain airbag 120 is deployed, the first lamp bracket 180a and the second lamp bracket 180b guide the deployment direction of the deployment portion 122 to support the curtain airbag 120 and the vehicle body. Interference from trims (not shown) can be prevented. The first lamp bracket 180a and the second lamp bracket 180b may be fixed to the vehicle body (not shown) through bolts (not shown).

With the deployment portion 122 of the curtain airbag 120 accommodated inside the first lamp bracket 180a and the second lamp bracket 180b, the deployment portion 122 of the curtain airbag 120 is secured through the strap S. Separation from the inside of the first lamp bracket (180a) and the second lamp bracket (180b) can be prevented. The strap (S) may surround the first lamp bracket (180a) and the second lamp bracket (180b). The strap S may be made of a material with low durability. Accordingly, the strap S may be broken by the force with which the deployment portion 122 of the curtain airbag 120 is deployed.

In the vehicle curtain airbag device 100 according to an embodiment of the present invention, the fixing protrusion 163 disposed on the inflator bracket 160 is provided integrally with the bracket body 161, thereby attaching the inflator 140 to the bracket body ( 161), the process of fastening a separate fixing member can be deleted. Accordingly, the manufacturing process of the curtain airbag device 100 for a vehicle can be simplified, thereby reducing manufacturing costs and shortening manufacturing time.

In addition, in the curtain airbag device 100 for a vehicle according to an embodiment of the present invention, the stopper 164 is disposed on the second fixing protrusion 163b, so that the position at which the inflator 140 is placed on the bracket body 161 is fixed. It can be. Accordingly, by preventing the inflator 140 from being separated from the bracket body 161 in the longitudinal direction of the bracket body 161, the operational safety of the inflator 140 can be improved.

Although the present invention has been described above with reference to embodiments, those skilled in the art can make various modifications and modifications to the present invention without departing from the spirit and scope of the present invention as set forth in the claims below. You will understand that you can change it. And, the differences related to these modifications and changes should be construed as being included in the scope of the present invention as defined in the appended claims.

100: Curtain airbag device for vehicle 120: Curtain airbag
121: gas injection part 122: development part
140: Inflator 141: Inflator body
142: discharge unit 143: exposure hole
144: Connection 160: Bracket for inflator
161: Bracket body 162: Connection frame
163: fixing protrusion 163a: first fixing protrusion
163b: Second fixing protrusion 164: Stopper
164a: first protrusion 164b: second protrusion
165: Separation prevention protrusion 180a: First lamp bracket
180b: Second lamp bracket F: Coupling member
P: Push pin S: Strap

Claims (11)

A bracket body that is coupled to the inflator that deploys the curtain airbag and is fixed to the vehicle body; and
a fixing protrusion protruding from the bracket body and surrounding the inflator; and
A stopper disposed on the fixing protrusion along a direction in which the inflator is inserted into the fixing protrusion to fix the position of the inflator; Bracket for inflator including. According to paragraph 1,
The inner peripheral surface of the fixing protrusion is provided in a shape corresponding to the outer peripheral surface of the main body of the inflator,
A bracket for an inflator, wherein the diameter of the inner peripheral surface of the fixing protrusion is smaller than the diameter of the outer peripheral surface of the main body of the inflator. According to paragraph 2,
The fixing protrusions are,
a first fixing protrusion disposed close to an outlet portion of the body of the inflator through which gas is discharged; and
a second fixing protrusion disposed close to a connection portion of the main body of the inflator; Including,
A bracket for an inflator, wherein the stopper is disposed on the second fixing protrusion. According to paragraph 3,
The stopper is,
a first protrusion protruding from a side of the second fixing protrusion that does not face the first fixing protrusion; and
a second protrusion protruding from an end of the first protrusion to have a bent shape and contacting the main body of the inflator; Bracket for inflator including. According to paragraph 4,
The inner peripheral surface of the first protrusion is provided in a shape corresponding to the shape of the inner peripheral surface of the second fixing protrusion. curtain airbags;
an inflator coupled to the curtain airbag to supply gas into the curtain airbag; and
An inflator bracket connecting the inflator to the vehicle body; Including,
The bracket for the inflator is,
a bracket body coupled to the inflator that deploys the curtain airbag and fixed to the vehicle body; and
a fixing protrusion protruding from the bracket body and surrounding the inflator; and
A stopper disposed on the fixing protrusion along a direction in which the inflator is inserted into the fixing protrusion to fix the position of the inflator; A curtain airbag device for a vehicle including a. According to clause 6,
The inner peripheral surface of the fixing protrusion is provided in a shape corresponding to the outer peripheral surface of the main body of the inflator,
A curtain airbag device for a vehicle, wherein the diameter of the inner peripheral surface of the fixing protrusion is smaller than the diameter of the outer peripheral surface of the main body of the inflator. In clause 7,
The fixing protrusions are,
a first fixing protrusion disposed close to an outlet portion of the body of the inflator through which gas is discharged; and
a second fixing protrusion disposed close to a connection portion of the main body of the inflator; Including,
The stopper is disposed on the second fixing protrusion, a curtain airbag device for a vehicle. According to clause 8,
The stopper is,
a first protrusion protruding from a side of the second fixing protrusion that does not face the first fixing protrusion; and
a second protrusion protruding from an end of the first protrusion to have a bent shape and contacting the main body of the inflator; Including,
The stopper is disposed on the second fixing protrusion, a curtain airbag device for a vehicle. According to clause 9,
An exposed hole disposed in the main body of the inflator at an end of the side that is not coupled to the curtain airbag and exposing a connection portion coupled to a connector that supplies power; is formed,
An end of the second protrusion is disposed outside the exposure hole. According to clause 6,
a coupling member coupled to the curtain airbag and the inflator bracket, and maintaining the coupled state of the curtain airbag and the inflator and the coupled state of the curtain airbag and the inflator bracket; It further includes,
The inflator bracket is disposed on a surface not in contact with the inflator and includes a separation prevention protrusion that prevents the coupling member from being separated in the longitudinal direction of the inflator.

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