JP2009248653A - Airbag device, and motorcycle with airbag device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an effective technology for imparting a function of draining water from a retainer and a function of preventing the flow of gas or residue from an airbag to a region outside the retainer to an airbag device which is mounted on a vehicle where an occupant normally operates the vehicle in the state of being exposed to the outside of the vehicle, to allow proper use of the airbag. <P>SOLUTION: The airbag device 110 is mounted on a motorcycle where the occupant R normally operates the vehicle in the state of being exposed to the outside of the vehicle. It comprises a drain opening 115 provided in the retainer 111, and a bag ring 124 having at least a body part 124a for pushing an inflator insertion opening edge 121b of the airbag 121 through an in-airbag region 121a against the retainer 111, and an interposing part 124b interposing on a passage ranging from a gas jet orifice 113b of an inflator 113 inserted into the in-airbag region 121a through an inflator insertion opening 122 and an in-retainer region 130 toward the drain opening 115. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a technology for constructing an airbag device mounted on a vehicle in which vehicle operation is normally performed in a state where an occupant is exposed to the outside of the vehicle.

Conventionally, various techniques for restraining an occupant by attaching an airbag device to a motorcycle vehicle are known. For example, in a motorcycle, when a forward collision occurs, a technique is known in which an airbag accommodated in a case attached to a vehicle body frame is inflated and inflated by inflation gas, thereby restraining an occupant (for example, , See Patent Document 1).
By the way, in this type of vehicle in which the vehicle operation is normally performed in a state where the occupant is exposed to the outside of the vehicle, each component of the airbag device is easily affected by moisture caused by rain or humidity. A configuration is effective in which water brought into the apparatus is discharged from the retainer inner region to the retainer outer region through a drain opening provided at the bottom of the retainer. On the other hand, the configuration in which the airbag apparatus itself is exposed to severe conditions that are easily affected by vibrations of the engine or the like, and it is assumed that the vibrations cause deformation of members such as the retainer at the location where the airbag is assembled. Further, it is required to prevent gas and residue in the airbag from flowing out to the outside of the retainer through the inside of the retainer and the drain opening.
JP 2002-137777 A

  Therefore, the present invention has been made in view of such a point, and a water discharge function in a retainer for an airbag device mounted on a vehicle in which vehicle operation is normally performed in a state where an occupant is exposed to the outside of the vehicle, and It is an object of the present invention to provide a technique effective for imparting a function of preventing gas and residue in an airbag from flowing out to a region outside a retainer, and thereby enabling proper use of the airbag.

  In order to achieve the above object, the invention described in each claim is configured. The inventions described in these claims can typically be applied to configurations of airbag devices mounted on various vehicles in which vehicle operations are normally performed in a state where an occupant is exposed to the outside of the vehicle. In this specification, a vehicle in which vehicle operation is normally performed in a state where the occupant is exposed to the outside of the vehicle includes a motorcycle such as a motorcycle or a scooter, and the occupant has three or more traveling wheels. Vehicles that ride and sit (for example, three-wheeled motorbikes used for home delivery, three-wheeled or four-wheeled buggy motorcycles for running on rough roads), as well as snowmobiles, etc. Vehicles that are saddleed and seated, and vehicles that have no roof or can open the roof (open cars, convertibles or cabriolets) are widely included.

  An airbag apparatus according to the present invention is an airbag apparatus mounted on a vehicle in which vehicle operation is normally performed in a state where an occupant is exposed to the outside of the vehicle, and includes an airbag, an inflator, a retainer, a fastening element, and a drain At least an opening and an interposition part are provided.

  The airbag is configured as a bag-like airbag or gas bag that is deployed and inflated in the passenger restraint area in the event of a vehicle accident. This airbag is accommodated in the retainer in a predetermined folding manner. The “occupant restraint area” here includes a wide area around the occupant connected to the occupant, such as the occupant front, occupant side, occupant upper side, and occupant lower side of the occupant restrained in the event of an accident. In addition, regarding the “predetermined folding mode” referred to here, typically, one or more of bellows folding that folds in a bellows shape, roll folding that winds up in a roll shape, or mechanical folding is combined. Folding modes and the like are included.

  The inflator includes at least an inflator body, an inflator flange, and a gas injection port. The inflator main body is configured as a cylindrical main body portion that generates air bag inflation gas. This inflator body is typically configured to accommodate an igniter (ignition device), an ignition agent, a gas generating agent, a filter, and the like. An inflator flange is comprised as a flange part standingly arranged in the surrounding wall part of an inflator main body. The gas injection port is configured as a gas injection portion inserted into the airbag through the inflator insertion opening of the airbag.

  The retainer accommodates the airbag and the inflator and has a retainer opening into which the inflator body is inserted. The term “accommodation” as used herein is intended to broadly encompass forms in which all or a part of each of the airbag and the inflator as the objects to be accommodated is accommodated. The fastening element serves to fasten and fix the opening edge of the inflator insertion opening of the airbag to the retainer. With respect to the fastening element, a fastening structure using bolts and nuts, a fastening structure using rivets, or the like can be appropriately employed.

  By the way, in this type of vehicle in which the vehicle operation is normally performed in a state where the occupant is exposed to the outside of the vehicle, each component of the airbag device is easily affected by moisture caused by rain or humidity. A configuration is effective in which water brought into the apparatus is discharged from the retainer inner region to the retainer outer region through a drain opening provided at the bottom of the retainer. On the other hand, since it is assumed that the airbag device itself is subjected to severe conditions that are easily affected by vibrations of the engine or the like, the vibrations may cause deformation of members such as the retainer. In addition, it is required to prevent the gas and residue in the airbag from flowing out to the area outside the retainer through the area inside the retainer and the drain opening.

  Therefore, this airbag device includes a drain opening and an interposition part as further components. The drain opening is configured as a portion for draining that communicates between the retainer inner region and the retainer outer region formed between the airbag and the retainer at the bottom of the retainer. On the other hand, the interposition part is interposed on a path from the gas injection port inserted into the airbag to the drain opening through the inflator insertion opening and the retainer inner region, and blocks the flow of fluid flowing through the path. Configured as Thereby, for example, the gas or residue (burnt) injected from the gas injection port is reflected by the intervening portion interposed on the path, thereby preventing flow from the inflator insertion opening to the retainer inner region. It is possible. Therefore, it is effective to prevent the gas and residue in the airbag from flowing out to the area outside the retainer and adversely affecting the fuel stored in the fuel storage section. The “retainer outer region” here is defined as a region other than the retainer inner region when the side in which the airbag is accommodated is the retainer inner region.

  As described above, according to such a configuration of the airbag apparatus according to the present invention, in the retainer, the airbag apparatus mounted on the vehicle in which the vehicle operation is normally performed in a state where the occupant is exposed to the outside of the vehicle. A water discharge function and a function of preventing outflow of gas and residue in the airbag to the region outside the retainer are provided, so that the airbag can be used appropriately.

  Moreover, in the airbag apparatus of the further form concerning this invention, the said interposition part is the structure interposed between the gas-injection port further inserted in the airbag, and the opening edge part of an inflator insertion opening. Is preferred. According to such a configuration, the interposition part has an inflator insertion opening in the airbag in addition to the function of preventing the gas and residue injected from the gas injection port from flowing from the inflator insertion opening to the retainer inner region. This is rational because it has a function of protecting the opening edge of the gas from gas and residues.

  Moreover, in the airbag apparatus of the further form concerning this invention, it is preferable that the said fastening fixing element is comprised using a bag ring, a bolt shaft, and a nut. The bag ring is configured as a member that is attached to the airbag within the airbag. The bolt shaft is configured as a long-axis-shaped bolt portion that extends from the bag ring through the opening edge of the airbag and the retainer to the region outside the retainer. The nut is configured as a nut portion that can be engaged with the bolt shaft from the outside region of the retainer. According to such a configuration, the air bag adopting a tightening structure with bolts and nuts in the structure for preventing gas and residue in the air bag from flowing out to the outside region of the retainer through the retainer inside region and the drain opening. An apparatus is provided.

  Moreover, in the airbag apparatus of the further form concerning this invention, the said retainer is a structure arrange | positioned in the peripheral area | region of the fuel storage part which stores the fuel for engine drive among each site | part of a vehicle. preferable. The "fuel storage section" here includes a fuel tank that stores most of the fuel in a lump, a flow path on the inflow side with respect to the fuel tank, a flow path on the flow side with respect to the fuel tank, and on each of these flow paths. Various devices to be arranged are widely included. In addition, the “peripheral region of the fuel storage unit” here includes a wide range of regions that are close to or connected to the upper, side, front, and rear of the fuel storage unit. According to such a configuration, in the airbag device in which the retainer is disposed in the peripheral region of the fuel storage unit, the gas and the residue in the airbag flow out to the region outside the retainer and are stored in the fuel storage unit. It is possible to prevent adverse effects on the fuel.

  The motorcycle with an airbag device according to the present invention is normally operated in a state where an occupant is exposed to the outside of the vehicle, and the airbag inflating gas is supplied to the airbag when the vehicle collides forward. The airbag is a motorcycle with an airbag device on which an airbag device that deploys and inflates in an occupant restraint region in front of the occupant to restrain the occupant is mounted. As used herein, “frontal collision” widely includes a mode in which a motorcycle vehicle collides with a collision object in a running state or a stationary state, for example, another vehicle, a pedestrian, an obstacle, or the like, on the front side. In addition, the “occupant restraint area” referred to here extends in the forward movement direction of the occupant when the occupant tries to move toward the front of the motorcycle by the kinetic energy at the time of a front collision, and It is defined as a space for restraining the passenger to be thrown away. In this motorcycle with an airbag device, it is preferable to adopt the configuration of each airbag described above as the airbag device. According to such a configuration, there is provided an airbag apparatus motorcycle equipped with an airbag apparatus that is effective in preventing the gas and residues in the airbag from flowing out to the outside of the retainer.

  As described above, according to the present invention, in the airbag device mounted on the vehicle in which the vehicle operation is normally performed in a state where the occupant is exposed to the outside of the vehicle, in particular, in the retainer formed between the airbag and the retainer. A drain opening for draining the area and the outside area of the retainer, and a path from the gas injection port inserted in the airbag to the drain opening through the inflator insertion opening and the retainer inner area. By providing an intervening portion that blocks the flow of fluid flowing through the path, the airbag device is provided with a water discharge function in the retainer and a function of preventing gas and residue in the airbag from flowing out to the outside of the retainer. The proper use of the airbag became possible.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. First, the overall configuration of the motorcycle 100 will be described with reference to FIG. Here, FIG. 1 is a side view of a motorcycle 100 according to an embodiment of the “vehicle” or “motorcycle with an airbag device” of the present invention, and an airbag is attached to the vehicle of the motorcycle 100. A state in which the device 110 is mounted is shown.

  As shown in FIG. 1, a motorcycle 100 is a vehicle in which a vehicle operation is normally performed in a state where an occupant R is exposed to the outside of the vehicle. The seat 103, the handle 104, the front wheel 106 and the rear wheel 107, the engine 109, and the like are configured as a so-called touring type motorcycle.

  A region on the front side of the occupant seated on the seat 103 and above the vehicle body constituting portion 101 of the motorcycle 100 serves as an occupant restraint region 140 for restraining the occupant R properly when the motorcycle 100 undergoes a forward collision. It is prescribed. The occupant restraint area 140 here corresponds to the “occupant restraint area” in the present invention. In the present embodiment, the “front collision” refers to various collision objects on the front side of the motorcycle 100 (for the sake of convenience, for example, other motorcycles, various vehicles other than motorcycles, bicycles, pedestrians, Widely encompassing forms that collide against obstacles such as obstacles and guardrails. Further, the “occupant restraint area 140” in the present embodiment is an area corresponding to the “occupant restraint area” in the present invention, and the occupant R seated on the seat 103 faces the front of the vehicle by the kinetic energy at the time of a frontal collision. When the vehicle is about to move, it is defined as a space for restraining the occupant who extends on the forward movement direction line of the occupant and is thrown away forward of the vehicle.

  A headlight, various meters, switches, a windshield, and the like are provided on a front portion 102 on the vehicle front side of the vehicle body constituting portion 101. A fuel tank 105 and an airbag device (also referred to as “airbag module”) 110 are mounted in a region between the front portion 102 and the seat 103. The fuel tank 105 is a tank that stores fuel for driving the engine 109. The airbag device 110 is disposed above the fuel tank 105 (and behind the fuel tank 105) so as to expand and inflate in the occupant restraint area 140 in the event of a vehicle accident. It is comprised as an apparatus which restrains a passenger | crew by the airbag 121) mentioned later. The airbag device 110 corresponds to the “airbag device” in the present invention.

  2 and 3 are referred to for a specific configuration of the airbag device 110. Here, FIG. 2 shows a cross-sectional structure of the airbag device 110 in FIG. FIG. 3 shows a partially enlarged view of region A in FIG.

  As shown in FIG. 2, the airbag device 110 of the present embodiment is mainly configured by an airbag 121, a retainer 111, an inflator 113, a webbing 117, a module cover 120, and the like.

  The airbag 121 is formed into a three-dimensional bag shape by using a base fabric made of the same material as that of an automobile airbag fabric and sewing a plurality of pieces of the base fabric together. The airbag 121 is folded in a predetermined folding manner and accommodated in a bottomed box-like retainer 111. Here, the “predetermined folding mode” is typically a folding mode in which one or more of bellows folding that folds into a bellows shape, roll folding that winds up in a roll shape, or mechanical folding is combined. It is said. In the folded state, the airbag 121 is preferably arranged so that the stitched portion 117a with the webbing 117 faces upward, that is, the stitched portion 117a faces the airbag opening 111c side of the retainer 111. The airbag opening 111c is configured as an opening portion that allows the airbag 121 to be deployed or protruded out of the retainer 111 above the bottomed box-like retainer 111. Thereby, when the airbag 121 accommodated in the retainer 111 is deployed or protrudes out of the retainer 111 through the airbag opening 111c of the retainer 111, the deployment operation or the projection operation of the airbag 121 is inhibited by the webbing 117. Hateful. The airbag 121 here corresponds to an “airbag” in the present invention.

  The webbing 117 is configured as a long tether, and one end of the webbing 117 is stitched to the airbag 121, and the other end is connected to a vehicle body side fastener (not shown). This webbing 117 fulfills the function of fastening the airbag 121 to the vehicle body side of the motorcycle 100. As a result, the behavior when the airbag 121 is deployed and inflated can be stabilized, and the restraint stability when the deployed and inflated airbag 121 restrains the occupant R can be secured by the webbing 117. Is done. The webbing 117 can be configured by one or a plurality of webbings as necessary. The webbing 117 is typically made of a webbing material similar to that of an automobile seat belt (processed into a belt shape using resin fiber yarns), or a material similar to an airbag cloth. Alternatively, it can be formed by processing into a string shape. Further, in the configuration that secures restraint stability when restraining the occupant R by the airbag 121 itself, the webbing 117 that fastens the airbag 121 to the vehicle body side can be omitted.

  The module cover 120 is configured as a member that covers the folded airbag 121 in the accommodated state by covering the airbag opening 111c of the retainer 111 from above, and has at least a top plate portion 120a and a standing portion 120b. The module cover 120 is typically molded by molding using a resin material. The top plate portion 120a of the module cover 120 extends substantially horizontally in the opening surface direction in the region of the airbag opening 111c of the retainer 111, thereby forming a plate-like portion that defines the upper surface of the airbag device 110. Composed. Further, although not particularly illustrated, a tear line is formed on the top plate portion 120a as a planned tear line that is to be cleaved when receiving a deployment and inflation force from the airbag 121. The standing portion 120b of the module cover 120 is a plate extending along the standing wall surface of the retainer 111 in the vertical direction intersecting with the extending surface of the top plate portion 120a from the lower surface (back surface) of the top plate portion 120a. It is configured as a shaped part. In addition, a webbing through hole 120c that communicates the inside and the outside of the module cover 120 is formed on the rear side (occupant side) of the standing portion 120b, and the webbing 117 is connected to the module through the webbing through hole 120c. The cover 120 can extend between the inside of the cover and the outside of the cover. The module cover 120 and the retainer 111 are connected to each other by attaching and fixing the standing portion 120b to the standing wall surface of the retainer 111 via a fastener (not shown).

  The inflator 113 has at least a function of generating airbag inflation gas so that the folded airbag 121 is inflated while being deployed from the retainer 111 in the event of a vehicle collision. In the present embodiment, the inflator 113 is configured as a so-called cylinder-type inflator in which a cylindrical inflator body 113a is disposed horizontally. The inflator 113 is provided with a gas injection port 113b through which an air bag inflation gas flows out from the inflator body 113a, and the gas injection port 113b is disposed in an air bag inner region 121a inside the air bag 121. The generated inflation gas is directly supplied to the airbag inner area 121a. The inflator 113, the inflator main body 113a, and the gas injection port 113b referred to here constitute the “inflator”, “inflator main body”, and “gas injection port” in the present invention, respectively.

  Although not particularly shown, the inflator body 113a of the inflator 113 contains an igniter (ignition device), an ignition agent, a gas generating agent, a filter, and the like. This igniter (ignition device) is electrically connected to a long harness at a connector at the bottom of the case of the inflator 113, and this harness is connected to a vehicle-side control unit (not shown). In such a configuration, when a vehicle collision is detected, a control signal from the control unit on the vehicle side is transmitted to the igniter (ignition device) of the inflator 113 through the harness, and airbag inflation gas is generated.

  The retainer 111 is configured as a case body that houses the airbag 121 and the inflator 113 folded in the above-described folding manner. The retainer 111 here corresponds to the “retainer” in the present invention. Specifically, a retainer-internal region 130 of the retainer 111 is formed by the first space portion 111a formed in a concave shape at the bottom of the retainer 111 and the second space portion 111b other than the first space portion 111a. Has been. The first space portion 111a is a space portion that mainly houses the inflator 113, and the second space portion 111b is a space portion that mainly houses the airbag 121. Further, a drainage opening 115 for draining is provided at the bottom of the retainer 111 so as to communicate the retainer inner region 130 and the retainer outer region 131 formed between the airbag 121 and the retainer 111. In the motorcycle 100 in which the vehicle operation with the occupant exposed to the outside of the vehicle is in a normal state, each component of the airbag device 110 is easily affected by moisture due to rain or humidity. It is possible to discharge the water brought into the area from the retainer inner region 130 to the retainer outer region 131 through the drain opening 115 (see the arrow indicating the water discharge direction in FIG. 3). The drain opening 115 here corresponds to the “drain opening” in the present invention.

  In the present embodiment, the retainer 111 is disposed in a peripheral region of the fuel storage portion including the fuel tank 105. The fuel tank 105 here constitutes the “fuel storage section” in the present invention. That is, the “fuel storage unit” includes a fuel tank 105 that stores most of the fuel in a lump, a flow path on the inflow side with respect to the fuel tank 105, a flow path on the flow side with respect to the fuel tank 105, and each of these flow paths. Various devices arranged on the route are widely included. The airbag 121 and the inflator 113 housed in the retainer 111 are attached and fixed to the retainer 111 via a fastening and fixing element 123. The fastening element 123 here corresponds to the “clamping element” in the present invention.

  As shown in FIG. 3, the airbag 121 has an inflator insertion opening edge 121b, and the inflator insertion opening edge 121b has a gas injection port 113b of the inflator 113 inserted into the airbag inner area 121a. Inflator insertion opening 122 is provided. The inflator insertion opening edge 121b and the inflator insertion opening 122 here correspond to the “opening edge” and the “inflator insertion opening” in the present invention, respectively.

  Further, the fastening fixing element 123 used for fastening and assembling the inflator 113 and the airbag 121 configured as described above is attached from the inside of the airbag 121 to the inflator insertion opening edge 121b of the airbag 121 in the assembled state. The bag ring 124 is configured by using a long shaft-like bolt shaft 125 extending from the bag ring 124 and a nut 126 that can be engaged with the bolt shaft 125. The bolt shaft 125 of the fastening element 123 can be inserted into a through hole 127 that penetrates the inflator insertion opening edge 121b of the airbag 121 and the retainer 111 in common. The bag ring 124, the bolt shaft 125, and the nut 126 here correspond to “bag ring”, “bolt shaft”, and “nut” in the present invention, respectively.

  Meanwhile, in the airbag apparatus 110 having the above-described configuration, the above-described measures in which the drainage opening 115 is provided in the retainer in response to the fact that each component is easily affected by moisture due to rain or humidity are effective. Since the airbag apparatus 110 itself is exposed to harsh conditions that are easily affected by vibration of the engine 109 and the like, it is assumed that the vibration causes deformation of the retainer 111 at the assembly position of the airbag 121. In such a case, there is a concern that the gas or residue in the airbag inner region 121a may flow out to the retainer outer region 131 through the retainer inner region 130 and the water drain opening 115 described above. The retainer inner region 130 and the retainer outer region 131 here correspond to the “retainer inner region” and the “retainer outer region” in the present invention, respectively.

  Therefore, in the present embodiment, while maintaining the water discharge function at the drain opening 115 on the one hand, on the other hand, in order to ensure the function of preventing the outflow of gas and residues in the airbag inner area 121a to the retainer outer area 131, The structure using the bag ring 124 is adopted. Specifically, the bag ring 124 includes at least a main body portion 124a and an interposition portion 124b. The main body portion 124 a of the bag ring 124 performs the original function of the bag ring that presses the inflator insertion opening edge 121 b of the airbag 121 from the airbag inner region 121 a against the retainer 111. On the other hand, the interposition part 124b of the bag ring 124 is configured as a part connected to the main body part 124a and extending in a crossing manner with the main body part 124a. The interposition part 124b here corresponds to the “interposition part” in the present invention.

  This interposition part 124b is interposed on a path from the gas injection port 113b of the inflator 113 inserted in the airbag inner area 121a to the drain opening 115 through the inflator insertion opening 122 and the retainer inner area 130. It functions to block the flow of fluid flowing through the. That is, the interposition part 124b realizes a rational structure in which a function of preventing the outflow of gas and residue is added to the original function of the bag ring 124. As a result, the gas and the residue injected from the gas injection port 113b are reflected by the interposition part 124b as indicated by the white arrow shown in FIG. 3, for example, and flow from the inflator insertion opening 122 to the retainer inner region 130. It is possible to prevent this. Therefore, even in a configuration in which the water draining opening 115 is provided to ensure the water discharging function, the gas and residue ejected from the gas ejection port 113b are prevented from flowing to the retainer outside region 131 through the water draining opening 115. As a result, it is possible to prevent the gas and residue in the airbag from flowing out to the outside of the retainer and adversely affecting the fuel stored in the fuel storage section such as the fuel tank 105.

  Further, the interposition part 124b is configured to be interposed between the gas injection port 113b inserted in the airbag and the inflator insertion opening edge 121b of the inflator insertion opening 122. As a result, the interposition part 124b has the function of preventing the gas or residue injected from the gas injection port 113b from flowing from the inflator insertion opening 122 to the retainer inner region 130, and further, the inflator insertion in the airbag 121 is inserted. This is reasonable because it has a function of protecting the inflator insertion opening edge 121b of the opening 122 from gas and residue.

  When the motorcycle 100 having the above configuration causes a collision accident on the traveling direction side, the occupant tends to move (throw away) toward the front of the motorcycle 100. In the present embodiment, when the control signal from the vehicle-side control unit is transmitted to the inflator 113 of the airbag device 110 through the harness by the detection of the front collision, the inflator 113 is activated and the inflator 113 The generated airbag inflation gas is started to be supplied into the airbag 121. Thereby, for example, in the airbag device 110 in FIG. 2 that is in a state before the operation, the deployment operation or the projection operation of the airbag 121 is started in the direction of the arrow 10. Then, as the airbag inflation gas continues to be sent into the airbag 121 from the gas injection port 113 b of the inflator 113, the inflating portion is sequentially formed from the inside of the airbag 121.

  Immediately after the start of the operation of the airbag device 110, the airbag 121 presses the top plate portion 120a of the module cover 120 from the lower surface by its deployment and expansion force. The module cover 120 is cleaved along a tear line (not shown) as a planned tear line when the top plate portion 120a receives a deployment and inflation force from the airbag 121, and the vehicle front side of the standing portion 120b is hinged to the front of the vehicle. The air bag opening 111c of the retainer 111 is operated to release the covering state. As a result, the deployment and inflation of the airbag 121 is allowed, and the airbag 121 is deployed or protrudes outside the retainer 111 through the airbag opening 111c of the retainer 111. It should be noted that the shape and position of the tear line in the top plate portion 120a, the hinge forming portion when the module cover 120 is deployed, and the like can be changed as necessary. For example, a tear line is provided in a central region in the front-rear direction of the vehicle among the respective portions of the top plate portion 120a, and the top plate portion 120a is split into a portion that expands toward the front of the vehicle and a portion that expands toward the rear of the vehicle along the tear line. It can also be configured to.

  In addition, when the airbag 121 starts to be expanded and inflated, the webbing 117 stitched to the airbag 121 starts to act on a tensile load via one end, and the airbag 121 is expanded and inflated at a desired position. Is assisted through webbing 117. When the airbag 121 is fully deployed and inflated, a completed inflation state is formed, the inflated airbag 121 is formed in an occupant restraint area (occupant restraint area 140 in FIG. 1) formed in front of the occupant R. Thus, the occupant R who intends to move in the forward movement direction by the kinetic energy at the time of the vehicle collision is restrained by the inflated airbag 121.

  As described above, according to the above-described embodiment, with respect to the airbag device mounted on the motorcycle 100 in which the vehicle operation with the occupant exposed to the outside of the vehicle is in a normal state, the water discharge function in the retainer 111, and The airbag device 110 that provides a function of preventing the airbag 121 from flowing out into the retainer outer region 131 of the gas and the residue in the airbag inner region 121a and thus enables the airbag 121 to be used appropriately, and the airbag device 110 are mounted. A motorcycle 100 is provided.

(Other embodiments)
In addition, this invention is not limited only to said embodiment, A various application and deformation | transformation can be considered. For example, each of the following embodiments to which the above embodiment is applied can be implemented.

  In the above-described embodiment, the configuration in which the bag ring 124 including the interposition part 124b is provided with the function of preventing the outflow of gas and residue in addition to the original function of the bag ring 124 is described. A corresponding portion can be prepared as a component separate from the buckling 124. Further, in the present invention, it is sufficient that the interposition part 124b is interposed at least on the path from the gas injection port 113b of the inflator 113 to the drain opening 115 through the inflator insertion opening 122 and the retainer inner region 130. Further, the structure provided with a portion corresponding to the interposition part 124b may be applied to an airbag apparatus including a cylinder-type inflator as in the above embodiment, or a columnar, cylindrical or disk-shaped inflator, You may apply to the airbag apparatus provided with what is called a disk type inflator.

  In the above-described embodiment, the case where the tightening structure using bolts and nuts is described. However, in the present invention, another tightening structure such as a tightening structure using rivets may be employed.

  In the above-described embodiment, the so-called touring type motorcycle 100 has been described. However, other types of motorcycles such as a scooter type having a space allowing lateral movement of the occupant legs between the handle and the seat, The present invention can also be applied to a motorcycle vehicle having a wheel structure of two or more wheels other than the motorcycle 100, or a vehicle having no roof or capable of opening the roof (open car, convertible or cabriolet).

  In the above embodiment, the case where the airbag device 110 is disposed above the fuel tank 105 (and behind the fuel tank 105) is described. As long as 121 can be deployed and inflated in a desired region, the location of the airbag device 110 in the vehicle body can be changed as appropriate. For example, the airbag device 110 can be disposed at a position shifted backward or forward of the vehicle from the position shown in FIG.

1 is a side view of a motorcycle 100 according to an embodiment of a “vehicle” or “motorcycle” of the present invention, and shows a state in which an airbag device 110 is mounted on the vehicle of the motorcycle 100. FIG. It is a figure which shows the cross-section of the airbag apparatus 110 in FIG. It is the elements on larger scale of the A area | region in FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 100 ... Motorcycle 101 ... Car body structure part 102 ... Front part 103 ... Seat 104 ... Handle 105 ... Fuel tank 106 ... Front wheel 107 ... Rear wheel 109 ... Engine 110 ... Airbag device 111 ... Retainer 111a ... 1st space part 111b ... 2nd space part 111c ... Air bag opening 112 ... Retainer opening 113 ... Inflator 113a ... Inflator body 113b ... Gas injection port 115 ... Drain opening 117 ... Webbing 117a ... Suture part 120 ... Module cover 120a ... Top plate part 120b ... Standing Installation part 120c ... Webbing through-hole 121 ... Airbag 121a ... Airbag inner region 121b ... Inflator insertion opening edge 122 ... Inflator insertion opening 123 ... Tightening fixing element 124 ... Bag ring 124a ... Body part 124 ... intermediate portion 125 ... bolt 126 ... Nut 127 ... through hole 130 ... retainer area 131 ... extra-retainer area 140 ... occupant restraining region R ... passenger

Claims (5)

An airbag device mounted on a vehicle in which vehicle operation is normally performed in a state where an occupant is exposed to the outside of the vehicle,
In the event of a vehicle accident,
An inflator body for generating airbag inflation gas; and an inflator having a gas injection port that is inserted into the airbag through the inflator insertion opening of the airbag and injects the airbag inflation gas generated in the inflator body. ,
A retainer for housing the airbag and the inflator;
A fastening element that fastens and fixes the opening edge of the inflator insertion opening to the retainer of the airbag;
At the bottom of the retainer, a drain opening for draining communicating between the retainer inner region and the retainer outer region formed between the airbag and the retainer;
An intervening portion interposed on a path from the gas injection port inserted into the airbag to the drain opening through the inflator insertion opening and the retainer inner region, and blocking the flow of fluid flowing through the path; ,
An airbag device characterized by comprising: The airbag device according to claim 1,
The air bag apparatus, wherein the interposition part is further interposed between the gas injection port inserted in the air bag and the opening edge. The airbag device according to claim 1 or 2,
The tightening and fixing element extends from the bag ring to the outer region of the retainer through the opening edge of the airbag and the retainer. An airbag device comprising: a long shaft-shaped bolt shaft; and a nut engageable with the bolt shaft from the retainer outer region, wherein the bag ring constitutes the interposition portion. The airbag device according to any one of claims 1 to 3,
The air bag apparatus according to claim 1, wherein the retainer is disposed in a peripheral region of a fuel storage portion that stores fuel for driving the engine among the parts of the vehicle. The vehicle is operated in a state where the occupant is exposed to the outside of the vehicle, and the airbag is expanded in the occupant restraint area in front of the occupant by supplying the airbag inflation gas to the airbag at the time of a frontal collision of the vehicle. A motorcycle with an airbag device equipped with an airbag device that inflates and restrains an occupant,
The motorcycle with an airbag device, wherein the airbag device according to any one of claims 1 to 4 is used as the airbag device.

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