JP2008273395A - Airbag cover, instrument panel, and airbag device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a technique effective for smoothly cleaving a deployment door of an airbag cover according to a tear line when deploying and inflating an airbag for an occupant in a vehicle accident, and for smoothly deploying the deployment door cleaved at the tear line, in the airbag cover for covering the airbag for the occupant seat. <P>SOLUTION: In this airbag cover 100, a hinge part 113 of a deployment door is provided on an airbag cover body 110 side, and the hinge part 113 has a thickness intermittently variable in a thickness direction of the airbag cover body 110, and includes an extension line extending along a cover rear face. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a technique for constructing an airbag cover to be attached to a passenger airbag of a vehicle.

For example, Patent Document 1 below discloses an example of a conventional passenger airbag device. In this passenger seat airbag device, a tear line for tearing the airbag cover is provided on the airbag cover that covers the airbag for the passenger on the passenger seat, and the airbag cover is split along the tear line when the vehicle collides. The deployment door is deployed to allow the passenger seat passenger airbag to be deployed and inflated to the outside of the airbag cover.
JP 2004-1635 A

By the way, when designing this type of airbag device including various passenger airbags for restraining passengers, including passenger airbags, the deployment doors of the airbag covers are lined up when the passenger airbags are deployed and inflated. There is a high demand for the construction of a technology that allows the unfolding of the unfolding doors that are torn smoothly according to the tear line and that allows the unfolding operation of the unfolding doors to be smoothly performed.
Accordingly, the present invention has been made in view of the above points, and in an airbag cover that covers an airbag for a passenger of a vehicle, the deployment door of the airbag cover is tear-lined when the airbag for the passenger is deployed and expanded in the event of a vehicle accident. It is an object of the present invention to provide a technique effective for causing the deployment door to be smoothly deployed as well as the deployment door that has been cleaved at the tear line.

  In order to solve the above problems, the invention described in each claim is configured. The present invention can be applied to various types of vehicles, and is typically applied to configurations of airbag covers of various types of airbags that are mounted in correspondence with automobile seats.

  An airbag cover according to the present invention is an airbag cover mounted on a vehicle, and includes at least a container, an airbag cover main body portion, a tear line, a deployment door, and a hinge portion.

  The container in the present invention has a function of accommodating at least an occupant airbag. The container may be configured to store the entire passenger airbag, or may be configured to partially store the passenger airbag. Further, the container may be configured to directly accommodate the whole or a part of the passenger airbag, or may be a separate container that directly accommodates the entire or part of the passenger airbag. The structure which accommodates the whole or a part of passenger | crew airbag indirectly may be sufficient. In the configuration in which all or part of the passenger airbag is indirectly stored, another container that directly stores all or part of the passenger airbag and a container that stores the other container. The container in the present invention is configured as described above.

  The airbag cover main body portion according to the present invention extends along a facing surface facing the occupant, and a container is attached to a surface opposite to the occupant, and the occupant airbag is accommodated in the container. It is set as the structure which coat | covers. The “occupant airbag” here refers to restraining all or part of the chest, head, abdomen, shoulders, legs, etc. of the passenger, passenger, and rear passengers. Various types of airbags are widely included. In this case, the airbag cover can typically be attached to an instrument panel or a vehicle seat of the vehicle.

  The tear tear line in the present invention is configured as an airbag cover tear tear line (expected tear line) formed on the back surface of the cover of the airbag cover body. This tear line is typically a thinned portion in the thickness direction of the airbag cover body by die molding, ultrasonic processing, laser processing, etc., and is also referred to as a “thin portion” or “thinned portion”. Is done. In the present invention, the tear line coincides with a part or all of the cleavage line that is actually cleaved along the tear line. That is, it is sufficient that the tear line has a function of forming a cleavage line such that the airbag cover has a desired cleavage mode, and the tear line may be formed beyond the tear line. Moreover, the cover back surface here is prescribed | regulated as a surface on the back side when the side facing a vehicle occupant is made into the surface in the state in which the airbag cover was installed.

  The deployment door according to the present invention is configured as a door portion that is partitioned by a tear line in the airbag cover main body portion and that is torn and deployed at the tear line by being pressed by the deployment inflation load of the passenger airbag. This deployment door can be configured as a single or multiple piece door.

  The hinge part in this invention is formed in the deployment fulcrum area | region of a deployment door among airbag cover main-body parts, and is comprised as an elongate hinge part which accept | permits the deployment operation | movement of the said deployment door. The “deployment fulcrum region” here is a region corresponding to the base or base end when the tearing side of each part of the deployment door is the tip, and is called the base region or base end region of the deployment door. You can also. In particular, in the present invention, the hinge portion is configured to include an extended line extending along the back surface of the airbag cover while the thickness in the plate thickness direction of the airbag cover body portion is intermittently variable. The extending line may have a configuration in which the thickness of the airbag cover main body portion in the thickness direction changes stepwise, or may have a configuration in which the thickness gradually changes. In the present invention, it is sufficient that the extended line is included in the hinge portion, and all or a part of the hinge portion can be constituted by the extended line.

  According to such a configuration of the airbag cover according to the present invention, the first portion having a relatively small thickness and the second portion having a relatively large thickness at the hinge portion are formed. The door can be smoothly unfolded, and the strength of the hinge portion can be maintained by the second portion. Therefore, it is effective to ensure the smooth deployment performance of the deployment door. Regarding the configuration of the hinge portion, it is preferable that the groove depth of the first portion in the hinge portion is smaller than that of the tearing tear line. According to such a configuration, the appearance of the airbag cover when viewed from the cover surface is improved by suppressing the groove depth of the hinge portion, and the deployment door is split at the tear line during the deployment operation. Although it is easy to do, it is set as the structure which is hard to cleave in a hinge part. Thus, the deployment door that has been cleaved at the tear line is prevented from being cleaved at the hinge portion, and is effective in maintaining the hinge function at the hinge portion.

In the further form of the airbag cover which concerns on this invention, it is preferable that it is the structure further provided with a tether. The anchoring portion has a function of reinforcing the deployment door by securing the deployment door to the container in the deployment fulcrum region.
According to such a configuration, it is possible to further enhance the effect of maintaining the hinge function in the hinge portion even when an excessive load acts on the hinge portion when the occupant airbag is deployed and inflated. Moreover, even if the deployment door is cleaved at the hinge portion, the deployment door can be separated from the airbag cover main body portion by the anchoring portion.

In a further form of the airbag cover according to the present invention, the anchoring portion includes a protruding piece that protrudes from the inner wall surface of the container toward the accommodation space side of the container along the back surface of the container in the deployment fulcrum region. The projecting piece is attached to the deployment door, and the deployment door is preferably connected to the container.
According to such a structure, the rational structure which restrained the number of parts is implement | achieved by comprising a tether part integrally with a container. In particular, it is preferable that the anchoring portion is attached to the deployment door on the back surface of the cover in close contact. According to such a configuration, no space is formed between the anchoring portion and the back surface of the cover, and therefore insert molding can be used to provide the anchoring portion.

In a further form of the airbag cover according to the present invention, the protruding piece has at least one opening, and an extended line is disposed in a region corresponding to the opening in the airbag cover main body. A configuration is preferred.
According to such a configuration, since the extension line of the hinge portion, that is, the thinned portion in the airbag cover main body portion does not overlap with the anchoring portion, the plate thickness formed by the airbag cover main body portion and the anchoring portion is reduced. This is effective in increasing the reinforcing function of the deployment door by the tether.

An instrument panel according to the present invention is an instrument panel that extends in the longitudinal direction in the vehicle width direction (the left-right direction of the vehicle) in front of the front seat of the vehicle, and the airbag cover having the above-described configuration is provided integrally. Configuration.
Therefore, according to the configuration of the instrument panel according to the present invention, an instrument panel integrated with an airbag cover having an airbag cover effective for ensuring smooth deployment performance of the deployment door is provided. The

  The “instrument panel” here is a panel body (“width direction”) extending in front of the driver's seat and front passenger seat in the passenger compartment, that is, between the front window and the front seat occupant. This is also called a “dashboard”, not only a panel around the instrument such as the speedometer and tachometer in front of the driver's seat, but also a glove box for storing small items on the passenger's seat side, and an air bag module for the passenger seat Etc. are defined as a panel body widely including the entire panel up to the part where the etc. are mounted. Furthermore, it can also be referred to as an “instrument panel”, including a car air-conditioning outlet and a portion in which a car stereo is stored.

The airbag device according to the present invention includes at least an occupant airbag, a container, a gas supply device, and an airbag cover.
The occupant airbag of the present invention is configured as an airbag that restrains the occupant in the event of a vehicle accident. The container of the present invention is configured as an airbag container that houses a passenger airbag that has been folded in a predetermined manner such as roll folding, bellows folding, or mechanical folding. The gas supply device of the present invention has a function of supplying inflation gas to an occupant airbag so that the occupant airbag is deployed and inflated while protruding from the airbag housing body in the event of a vehicle accident. The airbag cover of the present invention is configured substantially the same as the above-described airbag cover. Therefore, according to such a configuration of the airbag apparatus according to the present invention, an airbag apparatus including an airbag cover effective for ensuring a smooth deployment performance of the deployment door is provided.

In the further form of the airbag apparatus which concerns on this invention, it is preferable that the said airbag cover is a structure further provided with a tether. The anchoring portion has a function of reinforcing the deployment door by securing the deployment door to the container in the deployment fulcrum region.
According to such a configuration, it is possible to further enhance the effect of maintaining the hinge function in the hinge portion even when an excessive load acts on the hinge portion when the occupant airbag is deployed and inflated. Moreover, even if the deployment door is cleaved at the hinge portion, the deployment door can be separated from the airbag cover main body portion by the anchoring portion.

In a further form of the airbag device according to the present invention, the anchoring portion includes a protruding piece that protrudes from the inner wall surface of the container along the back surface of the container toward the housing space side of the container in the deployment fulcrum region. The projecting piece is attached to the deployment door, and the deployment door is preferably connected to the container.
According to such a structure, the rational structure which restrained the number of parts is implement | achieved by comprising a tether part integrally with a container. In particular, it is preferable that the anchoring portion is attached to the deployment door on the back surface of the cover in close contact. According to such a configuration, no space is formed between the anchoring portion and the back surface of the cover, and therefore insert molding can be used to provide the anchoring portion.

In a further form of the airbag apparatus according to the present invention, the protruding piece has at least one opening, and an extended line is disposed in a region corresponding to the opening in the airbag cover main body. A configuration is preferred.
According to such a configuration, since the extension line of the hinge portion, that is, the thinned portion in the airbag cover main body portion does not overlap with the anchoring portion, the plate thickness formed by the airbag cover main body portion and the anchoring portion is reduced. This is effective in increasing the reinforcing function of the deployment door by the tether.

  As described above, according to the present invention, in the airbag cover that covers the passenger airbag of the vehicle, in particular, the hinge portion of the deployment door is provided on the airbag cover body portion side, and the hinge portion is provided on the airbag cover. By adopting a configuration that includes an extended line that extends along the back surface of the cover while the thickness of the body portion in the plate thickness direction is intermittently variable, it is possible to smoothly deploy the deployment door that has been cleaved at the tear line. became.

  Hereinafter, an airbag cover 100 according to an embodiment of the “airbag cover” of the present invention will be described with reference to the drawings.

  FIG. 1 shows an exploded perspective view of the airbag cover 100 of the present embodiment as viewed from the back side of the cover. As shown in FIG. 1, the airbag cover 100 of this embodiment includes at least an airbag cover main body 110 and a housing case 120.

  The airbag cover main body 110 is configured as a plate-like member that is three-dimensionally (three-dimensionally) molded from a resin material such as PP (polypropylene) material or TPO (olefin-based elastomer) material. The airbag cover main body 110 is a panel that forms a design surface of the airbag cover 100. A tear tear line 112 is formed on the cover back surface 111 of the airbag cover main body 110. The cover back surface 111 of the air bag cover main body 110 here is defined as the back surface when the surface facing the vehicle occupant is the front surface when the air bag cover 100 is installed.

  The tear line 112 is a thinned portion provided to allow the pair of deployment doors 110a and 110a to be deployed when the passenger seat occupant airbag is deployed and inflated. In the present embodiment, the airbag cover main body 110 is provided. It is comprised as a linear groove part formed in the cover back surface 111. The tear line 112 is defined as a linear thinned portion having a relatively small plate thickness among the plate thicknesses of the portions of the airbag cover main body 110. The tear line 112 includes a first tear line portion 112a extending in the vehicle width direction and a pair of second tear line portions 112b and 112b extending in a direction intersecting the first tear line portion 112a at both ends of the first tear line portion 112a. It is set as the structure containing.

  In the present embodiment, the airbag cover main body 110 is cleaved at the tear line 112 when the passenger-seat airbag is deployed and inflated, and the pair of deployment doors 110a and 110a are in a double-open state (a double-open state). In other words, the airbag cover body 110 is broken according to the tear line 112, and each deployment door 110a is deployed to the cover surface side of the airbag cover body 110 ("vehicle compartment side" in the present invention). It is configured. The deployment doors 110a and 110a here correspond to the “deployment door” in the present invention. The unfolding doors 110a and 110a that rotate in a flap shape during the unfolding operation are also referred to as “flap portions”.

  The housing case 120 is joined to a position corresponding to the opening portions of the deployment doors 110a and 110a on the cover back surface 111 (back surface of the top plate) of the airbag cover main body 110. This opening portion is a space region formed by the deployment doors 110a and 110a deployed when a vehicle accident occurs, and the airbag on the housing case 120 side is deployed and inflated while projecting toward the vehicle occupant side through this opening portion. Regarding the joining of the housing case 120, the airbag cover main body 110 and the housing case 120 are typically joined to each other using insert molding or vibration welding. The storage case 120 has a function of reinforcing the airbag cover main body 110 and a function of storing the passenger-seat occupant airbag stored in the retainer 130 when the retainer 130 is attached. The storage case 120 includes a base 121 that is opposed to and joined to the cover back surface 111 of the airbag cover main body 110, and leg pieces 122 that are erected from the base 121 in a direction away from the deployment doors 110a and 110a. It has. A plurality of openings 123 are formed in the standing part of the leg piece part 122, and the opening part 123 has a retainer (retainer 130 described later) for accommodating the passenger seat passenger airbag in the accommodation case 120. When attaching, it is used to hook a retaining portion (a hook portion 132 described later) on the retainer side. That is, the retainer can be attached to and detached from the housing case 120 via the locking portion.

  In addition, the storage case 120 forms a storage space 120a in an area defined by the base 121, the leg piece 122, and a retainer 130 described later. The storage space 120 a forms a storage space for storing a passenger-seat occupant airbag in a state where the retainer 130 is attached to the storage case 120. The passenger seat occupant airbag accommodated in the accommodation space 120a is further covered from the vehicle compartment side by the airbag cover main body 110.

  2 to 5 are referred to for the detailed configuration of the housing case 120. Here, FIG. 2 shows a perspective view of the airbag cover 100 of the present embodiment as viewed from the cover surface side. 3 shows a cross-sectional structure taken along line AA of the airbag cover 100 in FIG. 1, and FIG. 4 shows a cross-sectional structure taken along line BB of the airbag cover 100 in FIG. 1 shows a cross-sectional structure of the airbag cover 100 in FIG.

  As shown in FIGS. 2 and 3, the housing case 120 includes tether portions 124 and 124 that function to fasten the deployment doors 110 a and 110 a to the housing case 120 and thereby reinforce the deployment doors 110 a and 110 a. The anchoring part 124 here corresponds to the “tethering part” in the present invention. Each tether 124 is connected to the base 121 of the housing case 120 and is configured integrally with the housing case 120. Specifically, each tether 124 is a deployment fulcrum region 110b of each deployment door 110a, that is, a region that serves as a deployment fulcrum during the deployment operation of the deployment door 110a (also referred to as “base region” or “base end region”). 2, the projecting piece projects from the inner wall surface 120 b of the housing case 120 toward the housing space 120 a side of the housing case 120 along the cover back surface 111. Each anchoring portion 124 is configured to be attached to the deployment door 110 a on the cover back surface 111, and thereby each deployment door 110 a is secured to the housing case 120. By constructing each anchoring part 124 integrally with the housing case 120, a rational structure with a reduced number of parts is realized. The development fulcrum area 110b here corresponds to the “development fulcrum area” in the present invention.

  In the present embodiment, each anchoring portion 124 is particularly attached to the deployment door 110a on the back surface 111 of the cover in close contact. According to such a configuration, a space portion is not formed between the anchoring portion 124 and the cover back surface 111, and therefore insert molding can be used to provide the anchoring portion 124. If necessary, vibration welding or the like other than insert molding can be used. In this case, a space portion may be formed between the anchoring portion 124 and the cover back surface 111. Further, in the present embodiment, each anchoring portion 124 is formed in a shape having at least one opening, in the example shown in FIG. The opening 124 a here corresponds to the “opening” in the present invention.

  As shown in FIGS. 2 and 4, in the present embodiment, a long hinge 113 is formed in the deployment fulcrum region 110 b of each deployment door 110 a in the airbag cover main body 110. . Each hinge portion 113 has a function of allowing the unfolding operation of each unfolding door 110a. The hinge portion 113 here corresponds to the “long hinge portion” in the present invention. In the present embodiment, the hinge 113 is configured to include a plurality of extended lines that are particularly scattered in a region corresponding to the opening 124a in the development fulcrum region 110b.

  As shown in FIG. 5, each extending line constituting the hinge portion 113 is a portion extending along the cover back surface 111 while the thickness in the plate thickness direction of the airbag cover main body 110 is intermittently variable (“ It is also referred to as “perforated portion”. That is, each extended line is configured as a step-shaped groove formed in the cover back surface 111 of the airbag cover main body 110, and the first portion where the thickness of the airbag cover main body 110 in the thickness direction is relatively small. 113a and a second portion 113b having a relatively large thickness. The extended line (hinge portion 113) may be formed when the airbag cover 100 is molded, or may be formed by post-processing of the airbag cover 100 by cutting, laser processing, ultrasonic processing, or the like. Good.

  In particular, in the present embodiment, the hinge portion 113 is constituted by a plurality of extending lines scattered in a region corresponding to the opening portion 124a in the deployment fulcrum region 110b. Therefore, the extending line of the hinge portion 113, that is, the airbag cover main body Since the thinned portion in the portion 110 does not overlap with the anchoring portion 124, it is possible to prevent the plate thickness formed by the airbag cover main body portion 110 and the anchoring portion 124 from being reduced. This is effective for enhancing the reinforcing function of the deployment door 110a.

  According to the configuration of the airbag cover 100 of the present embodiment, the hinge portion 113 of the deployment door 110a is provided on the airbag cover main body 110 side, and the hinge portion 113 is provided with a plate thickness of the airbag cover main body 110. By adopting a configuration including the first portion 113a having a relatively small thickness with respect to the direction and the second portion 113b having a relatively large thickness, the first portion 113a can smoothly deploy the deployment door 110a. In addition, the strength of the hinge portion 113 can be maintained by the second portion 113b. Therefore, it is effective to ensure the smooth deployment performance of the deployment door 110a.

  Regarding the configuration of the hinge portion 113, the groove depth of the first portion 113a in the hinge portion 113 is preferably smaller than that of the tearing tear line 112. According to such a configuration, the appearance of the airbag cover 100 when viewed from the cover surface is improved by suppressing the groove depth of the hinge portion 113, and the deployment door 110a is provided with a tear line during the deployment operation. 112 is easily cleaved, but the hinge portion 113 is difficult to cleave. Accordingly, the deployment door 110a that is cleaved at the tear line 112 is prevented from cleaving at the hinge portion 113, and is effective in maintaining the hinge function at the hinge portion 113.

  Further, in this embodiment, since the anchoring portion 124 having the function of reinforcing the deployment door 110a is further provided, an excessive load is applied to the hinge portion 113 when the passenger seat passenger airbag is deployed and inflated. In addition, the effect of maintaining the hinge function in the hinge portion 113 can be further enhanced by the cooperation of the anchoring portion 124 and the hinge portion 113. Even if the deployment door 110a is torn at the hinge portion 113, the deployment door 110a can be separated from the airbag cover main body 110 by the anchoring portion 124.

  The airbag cover 100 having the above configuration constitutes an airbag device together with a passenger-seat occupant airbag that restrains the passenger-seat occupant. FIG. 6 is referred to regarding the configuration of the airbag device. FIG. 6 shows a cross-sectional structure of the airbag device 10 of the present embodiment. As shown in FIG. 6, an airbag device 10 that is an embodiment of an “airbag device” in the present invention is configured mainly by a retainer 130, an airbag 140, an inflator 150, and an airbag cover 100. . The airbag device 10 is also referred to as an “airbag module”.

  The airbag cover 100 of the airbag apparatus 10 is integrally provided by vibration welding or the like on the instrument panel 12 extending in the vehicle width direction (the vehicle left-right direction) in front of the front seat of the vehicle. It is done. The instrument panel 12 is a panel body (also referred to as “dashboard”) that extends in the left-right direction (vehicle width direction) in front of the driver seat and passenger seat in the passenger compartment, that is, between the front window and the front seat occupant. In addition, not only the panel around the instrument such as the speedometer and tachometer in front of the driver's seat, but also the glove that holds the part equipped with the airbag 140 of the present embodiment and the accessory on the passenger seat side It is defined as a panel body that includes the entire panel up to the box. Furthermore, it can also be called the instrument panel 12 including a part for storing a car air conditioner outlet and a car stereo. The instrument panel 12 here corresponds to the “instrument panel” in the present invention. In this case, a panel body including the airbag cover 100 in the instrument panel 12 can also be referred to as an “instrument panel”.

The retainer 130 has a function as an airbag housing body that houses the airbag 140 folded in advance in a predetermined folding manner (roll folding, bellows folding, mechanical folding, etc.). The retainer 130 in a state in which the airbag 140 is accommodated is attached to the accommodation case 120 by hooking the hook portion 132 to the opening 123 on the accommodation case 120 side. In this case, the accommodation case 120 indirectly accommodates the airbag 140 by accommodating the retainer 130 that directly accommodates the entire airbag 140. Therefore, the “accommodating body” in the present invention is constituted by the accommodating case 120 and the retainer 130 referred to here.
In the event of a vehicle accident, the airbag 140 expands and inflates while projecting toward the passenger seat, and has a function of restraining the passenger seated in the passenger seat. Typically, the chest or head of the passenger in the passenger seat is restrained by the airbag 140. The airbag 140 corresponds to the “occupant airbag” in the present invention.
The inflator 150 is attached to the retainer 130 and is connected to the airbag 140 through a gas supply path (not shown), and gas that supplies inflation gas generated in the event of a vehicle accident to the airbag 140 through the gas supply path. Configured as supply means. The inflator 150 constitutes the “gas supply device” in the present invention.

  Here, FIGS. 6 and 7 are referred to regarding the operation of the airbag apparatus 10 having the above-described configuration. Here, FIG. 7 shows a perspective view when the airbag cover 100 of the present embodiment is opened.

  In the event of a vehicle accident, when a vehicle collision or a collision prediction is made by sensors (not shown) mounted on the vehicle, the airbag device 10 is activated, and inflation gas flows from the inflator 150 to the airbag 140 through the gas supply path. Supplied. As a result, the airbag 140 is deployed and inflated while projecting out of the retainer 130 toward the deployment doors 110a and 110a of the airbag cover main body 110. The direction coincides with a direction toward an occupant restraint region in which the passenger occupant is restrained by the airbag 140, that is, a region where the passenger occupant is present. At this time, the deployment doors 110a and 110a are pressed by the deployment inflating load of the airbag 140 and are torn at the tear line 112, and are deployed through the hinge portion 113 as indicated by arrows in FIG. Thus, when the deployment doors 110a and 110a are opened, the airbag 140 protrudes toward the occupant restraint region by a further deployment and inflating operation, contributing to restraint of the passenger on the passenger seat. At this time, in the present embodiment, it is possible to maintain the strength in the hinge portion 113 and obtain a desired hinge performance by the cooperation of the hinge portion 113 and the anchoring body having the above-described configuration. The unfolding doors 110a and 110a are unfolded smoothly.

  In addition, regarding the structure of the hinge part 113 of the airbag cover main-body part 110 in the airbag cover 100 of this Embodiment, and the tether part 124 of the storage case 120, the structure different from the said structure can also be employ | adopted. In the present invention, for example, another embodiment shown in FIGS. 8 to 10 may be employed.

  As shown in FIG. 8, the airbag cover 200 according to another embodiment of the “airbag cover” in the present invention is different from the configuration of the airbag cover 100 in that it is related to the position of the opening 124 a of the anchoring portion 124. Instead, a configuration is adopted in which the hinge portion of the deployment door 110a is a single extended line connecting all the hinge portions 113. As shown in FIG. 9, in the airbag cover 300 of another embodiment of the “airbag cover” in the present invention, an opening portion such as an opening 124a is further added to the configuration of the airbag cover 200 shown in FIG. The structure which remove | eliminated from the anchoring part 124 is employ | adopted. Further, as shown in FIG. 10, in the airbag cover 400 of another embodiment of the “airbag cover” in the present invention, in the configuration of the airbag cover 300 shown in FIG. The structure which removed itself is adopted. According to the configuration of the airbag cover shown in FIGS. 8 to 10, the same operational effects as the airbag cover 100 of the above embodiment can be obtained, and at least the smooth deployment performance of the deployment door 110 a can be ensured. The

(Other embodiments)
The present invention is not limited to the above-described embodiment, and various applications and modifications are conceivable. For example, each of the following embodiments to which the above embodiment is applied can be implemented.

  In the above-described embodiment, the case where each anchoring portion 124 is configured integrally with the housing case 120 has been described. However, in the present invention, the member corresponding to each anchoring portion 124 has a separate structure from the housing case 120. You can also.

  In the above embodiment, the airbag cover main body 110 includes two pieces of deployment doors 110a and 110a. However, in the present invention, one or two or more deployment doors are provided on the airbag cover main body. You may make it provide.

  Further, in the above embodiment, the description has been given of the configuration in which the accommodation case 120 accommodates the retainer 130 that directly accommodates the entire airbag 140. However, in the present invention, the accommodation case 120 includes all or one of the airbags 140. The structure which accommodates a part directly can also be employ | adopted.

  Further, in the above embodiment, the airbag cover 100 of the airbag 140 that restrains the chest or head of the passenger in the passenger seat has been described. However, the airbag that is attached to the airbag that restrains other parts of the passenger in the passenger seat For airbags that restrain all or part of the chest, head, abdomen, shoulders, legs, etc. of the bag cover and passengers other than passengers (drivers, rear seats, etc.) The present invention can also be applied to the configuration of the airbag cover to be mounted. In this case, a vehicle seat or the like other than the instrument panel can be appropriately selected as the installation location of the airbag cover.

It is the disassembled perspective view which looked at the airbag cover 100 of this Embodiment from the cover back surface side. It is the perspective view which looked at the airbag cover 100 of this Embodiment from the cover surface side. It is a figure which shows the cross-section regarding the AA of the airbag cover 100 in FIG. It is a figure which shows the cross-section regarding the BB line of the airbag cover 100 in FIG. It is a figure which shows the cross-section regarding CC line of the airbag cover 100 in FIG. It is a figure which shows the cross-section of the airbag apparatus 10 of this Embodiment. It is a perspective view at the time of opening of the airbag cover 100 of this Embodiment. It is a perspective view which shows the structure of the airbag cover 200 of another embodiment. It is a perspective view which shows the structure of the airbag cover 300 of another embodiment. It is a perspective view which shows the structure of the airbag cover 400 of another embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Airbag apparatus 12 ... Instrument panel 100, 200, 300, 400 ... Airbag cover 110 ... Airbag cover main-body part 110a ... Deployment door 110b ... Deployment fulcrum area | region 111 ... Cover back surface 112 ... Tear line 112a ... 1st tear line part 112b ... 2nd tear line part 113 ... Hinge part 113a ... 1st site | part 113b ... 2nd site | part 120 ... Accommodating case 120a ... Accommodating space 120b ... Inner wall surface 121 ... Base part 122 ... Leg piece part 123 ... Opening part 124 ... Anchoring part 124a ... Opening part 130 ... Retainer 132 ... Hook part 140 ... Airbag 150 ... Inflator

Claims (9)

An airbag cover mounted on a vehicle,
A housing for housing an occupant airbag;
An airbag cover main body that extends along a facing surface facing the occupant and that covers the occupant airbag housed in the housing body, the housing body being attached to the back surface of the cover opposite to the occupant And
A tear line for tearing the airbag cover formed on the back surface of the cover of the airbag cover main body;
A deployment door that is partitioned by the tear line in the airbag cover main body, and that is cleaved and deployed at the tear line by being pressed by a deployment inflation load of the occupant airbag;
A long hinge portion formed in the deployment fulcrum region of the deployment door in the airbag cover main body, and allowing deployment operation of the deployment door;
With
The airbag cover is configured to include an extended line extending along the back surface of the cover while the thickness of the airbag cover main body in the plate thickness direction is intermittently variable. The airbag cover according to claim 1,
In the deployment fulcrum region, the airbag cover further includes a tether portion that fastens the deployment door to the container. The airbag cover according to claim 2,
The anchoring portion is a projecting piece projecting from the inner wall surface of the container along the back surface of the cover toward the housing space side of the container in the deployment fulcrum region, and the projecting piece covers the deployment door. An airbag cover characterized in that the airbag cover is configured to be worn, and thereby is configured to fasten the deployment door to the container. The airbag cover according to claim 3,
The airbag has a configuration in which the protruding piece has at least one opening, and the extended line is disposed in a region corresponding to the opening in the airbag cover main body. An instrument panel extending longitudinally in the vehicle width direction in front of the front seat of the vehicle,
An instrument panel, wherein the airbag cover according to any one of claims 1 to 4 is provided integrally. An airbag device mounted on a vehicle,
An occupant airbag that restrains the occupant in the event of a vehicle accident;
A container for accommodating the occupant airbag folded in a predetermined manner in advance;
A gas supply device that supplies inflation gas to the occupant airbag so that the occupant airbag is deployed and inflated while protruding from the airbag housing body in the event of a vehicle accident;
Have an airbag cover,
The airbag cover extends along a facing surface facing the occupant, and the accommodating body is attached to the back of the cover opposite to the occupant, and the occupant airbag is accommodated in the accommodating body. An airbag cover main body for covering
A tear line for tearing the airbag cover formed in the airbag cover body, and
A deployment door that is partitioned by the tear line in the airbag cover main body portion, and that is torn and deployed at the tear line by being pressed by a deployment inflation load of the occupant airbag;
A hinge portion that is formed in a deployment fulcrum region of the deployment door in the airbag cover main body, and allows a deployment operation of the deployment door;
With
The airbag device is characterized in that the hinge portion includes an extended line extending along the back surface of the cover while the thickness of the airbag cover main body portion in the plate thickness direction is intermittently variable. The airbag device according to claim 6,
The airbag apparatus further includes a tether portion that fastens the deployment door to the container in the deployment fulcrum region. The airbag device according to claim 7,
The anchoring portion is a projecting piece projecting from the inner wall surface of the container along the back surface of the cover toward the housing space side of the container in the deployment fulcrum region, and the projecting piece covers the deployment door. An airbag device, characterized in that the airbag device is configured to be worn, whereby the deployment door is connected to the container. The airbag device according to claim 8, wherein
The protruding piece has at least one opening, and the extended line is disposed in a region corresponding to the opening in the airbag cover main body.

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