JP6143543B2 - Airbag device - Google Patents

Description

  The present invention relates to an airbag apparatus including an airbag cover that covers a folded airbag.

  In an airbag apparatus provided with an airbag cover, the airbag is generally held by the airbag cover, and the airbag cover is attached to the vehicle member. In the event of an emergency of the vehicle, the airbag jumps out of the airbag cover and inflates and deploys within the vehicle. At that time, since the airbag is disposed in a predetermined region of the vehicle compartment, the airbag needs to be securely held by the airbag cover. On the other hand, the airbag apparatus which hold | maintains an airbag is conventionally known by attaching an airbag to the case body (holding member) fixed to an airbag cover (refer patent document 1).

FIG. 12 is a cross-sectional view showing an example of a conventional airbag device 100 including a holding member 102 for the airbag 101, and shows a part of the airbag device 100.
As illustrated, the airbag device 100 includes a folded airbag 101, a holding member 102 that holds the airbag 101, an inflator 103, and an airbag cover 110. The airbag cover 110 includes an airbag grid 111 that covers the airbag 101, and a peripheral wall 112 that is formed on the back side of the airbag grid 111.

  When the airbag device 100 is assembled, the plurality of locking claws 104 of the holding member 102 are pushed into the peripheral wall 112. Subsequently, while deforming the peripheral wall 112, the locking claw 104 is moved to the insertion hole 113 of the peripheral wall 112 and inserted into the insertion hole 113. The retaining member 102 is fixed to the peripheral wall 112 by the locking claw 104 being locked to the peripheral wall 112 in the insertion hole 113. Thereby, the holding member 102 is attached to the airbag cover 110, and the assembly of the airbag apparatus 100 is completed.

  When the airbag apparatus 100 is operated, the airbag 101 is inflated in the peripheral wall 112 by the gas supplied from the inflator 103 to push open the airbag grid 111. Thereafter, the airbag 101 is inflated and deployed in the vehicle while being held by the holding member 102. When the airbag 101 is inflated and deployed, the deployment direction of the airbag 101 is regulated by the peripheral wall 112, and the airbag 101 is deployed toward the airbag grid 111. At the same time, the airbag 101 pushes the peripheral wall 112 outward and applies a force to the peripheral wall 112. Therefore, the peripheral wall 112 is required to have sufficient strength to withstand the force applied from the airbag 101, and the peripheral wall 112 tends to be thick.

  However, as the peripheral wall 112 becomes thicker, the peripheral wall 112 becomes difficult to be deformed, and it becomes difficult to push the locking claws 104 of the holding member 102 into the peripheral wall 112. Therefore, the holding member 102 cannot be easily attached to the airbag cover 110, and the attaching work of the holding member 102 takes time. Further, when the locking claw 104 is enlarged in order to prevent the holding member 102 from falling off, it becomes more difficult to attach the holding member 102 to the airbag cover 110. Thus, the conventional airbag apparatus 100 cannot be easily assembled, and there is room for improvement from the viewpoint of improving the workability of the assembly.

JP 2009-154669 A

  The present invention has been made in view of the above-described conventional problems, and an object of the present invention is to easily attach the holding member for holding the airbag to the airbag cover to facilitate the assembly operation of the airbag apparatus.

The present invention relates to an airbag device including an airbag cover, an airbag disposed in the airbag cover, and a holding member that holds the airbag and is attached to the airbag cover. Is formed between the peripheral wall and the outer wall, the outer wall that is formed on the back side of the airbag grid and surrounds the airbag, the outer wall that is formed on the rear side of the airbag grid and is located outside the peripheral wall, and And a fixing portion that fixes the holding member inserted into the gap portion, and the holding member has an insertion portion that is inserted into the gap portion and fixed to the fixing portion. attached to the bag cover, the airbag cover has a plurality of fixing portions which consists of a fixed part formed in the fixed portion and the outer wall formed in the peripheral wall, the holding member, the airbag cover A plurality of insertion portions fixed to a number of fixing portions, and the insertion portion fixed to the fixing portion of the peripheral wall and the insertion portion fixed to the fixing portion of the outer wall alternate along a predetermined edge of the holding member It is the airbag apparatus arrange | positioned in .

  According to the present invention, it is possible to easily attach the holding member for holding the airbag to the airbag cover to facilitate the assembly operation of the airbag apparatus.

It is sectional drawing which shows the airbag apparatus of 1st Embodiment. It is a perspective view which shows an airbag cover seeing from a back side. It is a figure which shows typically the half cross section of the airbag apparatus of 1st Embodiment. It is a figure which shows the airbag apparatus of 2nd Embodiment. It is a figure which shows the airbag apparatus of 3rd Embodiment. It is a figure which shows the airbag apparatus of 4th Embodiment. It is a figure which shows the airbag apparatus of 5th Embodiment. It is a figure which shows the airbag apparatus of 6th Embodiment. It is a perspective view which shows the airbag apparatus of 7th Embodiment. It is a perspective view which shows an airbag cover seeing from a back side. It is a perspective view which shows a holding member seeing from the front side. It is sectional drawing which shows the example of the conventional airbag apparatus.

An embodiment of an airbag device of the present invention will be described with reference to the drawings.
The airbag device of the present embodiment is a protection device that protects a vehicle occupant with an airbag, and is attached to vehicle members of various vehicles. The vehicle member is a member constituting the vehicle, and the airbag device is attached to a predetermined vehicle member in the vehicle. Hereinafter, the airbag device will be described by taking the passenger seat airbag device as an example.

(First embodiment)
FIG. 1 is a cross-sectional view showing the airbag apparatus 1A of the first embodiment, and schematically shows the airbag apparatus 1A attached to a vehicle 90.
As illustrated, the vehicle 90 includes an instrument panel 91, a fixing member 92 to which the airbag apparatus 1 </ b> A is fixed, and a fixing bolt 93. The instrument panel 91 is a vehicle member positioned below a windshield (not shown), and is disposed in front of a front seat (here, a passenger seat) (not shown). The fixing member 92 is disposed in the instrument panel 91. 1 A of airbag apparatuses are attached to the instrument panel 91, and are fixed to the fixing member 92 with the volt | bolt 93 within the instrument panel 91. FIG.

  1 A of airbag apparatuses are the airbag 2 which can be inflate-deployed, the inflator 3, the airbag cover 10 which accommodates the airbag 2, the holding member 4 to which the airbag 2 is attached, and the bracket fixed to the holding member 4 6 is provided. The inflator 3 is attached to the airbag 2, and the airbag 2 and the inflator 3 are attached to the holding member 4. The holding member 4 is made of a plate-like member, and holds the folded airbag 2 and inflator 3. The airbag 2 is formed of a base fabric and is disposed in the airbag cover 10 in a folded state.

  The holding member 4 includes a plurality of insertion portions 5 that are inserted into the airbag cover 10, and the plurality of insertion portions 5 include locking claws 5 </ b> A that are locked to the airbag cover 10. The insertion portion 5 is a connecting portion that connects the holding member 4 to the airbag cover 10, and includes a protruding piece that protrudes from the holding member 4 toward the airbag cover 10. The insertion portion 5 is formed integrally with the edge of the holding member 4, and a locking claw 5 </ b> A is formed at the distal end of the insertion portion 5. The insertion portion 5 is fixed to the airbag cover 10 by the locking claws 5 </ b> A being locked to the airbag cover 10. The holding member 4 is connected to the airbag cover 10 by the insertion portion 5 and attached to the back side of the airbag cover 10. Thereby, the airbag 2 and the inflator 3 are attached to the airbag cover 10, and the airbag apparatus 1A is assembled.

  The instrument panel 91 has an opening 94 for deployment of the airbag 2 and a peripheral portion 95 formed on the periphery of the opening 94. The opening 94 has a shape (here, a rectangular shape) in which the airbag 2 can be deployed, and opens toward the vehicle compartment 96 of the vehicle 90. The airbag 2 in the airbag cover 10 passes through the opening 94 and expands from the opening 94 to the vehicle compartment 96. The peripheral edge portion 95 is composed of a step portion surrounding the opening portion 94, and is formed on the entire periphery of the opening portion 94.

  The airbag device 1 </ b> A is inserted into the opening 94 from the front side of the instrument panel 91 and attached to the instrument panel 91. At that time, the airbag cover 10 contacts the peripheral edge portion 95 and is attached to the instrument panel 91 at the opening 94. Further, the bracket 6 of the airbag device 1 </ b> A is fixed to the fixing member 92 by a bolt 93. Thereby, the airbag apparatus 1 </ b> A is fixed to the fixing member 92 and is maintained in a state of being attached to the instrument panel 91.

  In the event of an emergency of the vehicle, the inflator 3 generates gas in the airbag 2 and supplies the gas to the airbag 2. The airbag 2 is deployed while being expanded by gas, and pushes the airbag cover 10 open. The airbag 2 jumps out of the airbag cover 10 into the vehicle compartment 96 and is inflated and deployed in a predetermined area in the vehicle compartment 96. Thus, the airbag 2 is deployed on the front side of the airbag cover 10 and inflated and deployed in front of the passenger seat so as to cover a part of the instrument panel 91. The passenger in the passenger seat is received and protected by the airbag 2.

Next, the airbag cover 10 will be described in detail.
FIG. 2 is a perspective view showing the airbag cover 10 as seen from the back side. The airbag cover 10 is formed so as to be closed on the front side and open toward the back side.
In addition, a back side is the side (airbag 2 side) by which the folded airbag 2 is arrange | positioned. The airbag 2 is disposed on the back side of the airbag cover 10 and the instrument panel 91. On the other hand, the front side is the space side where the airbag 2 is deployed, and here is the passenger side (vehicle compartment 96 side). In the vehicle 90, the occupant is located on the front side of the airbag cover 10 and the instrument panel 91, and the airbag 2 is deployed toward the front side of the airbag cover 10 and the instrument panel 91. Further, the back surface is a back surface that cannot be seen by the passenger, and the front surface is a front surface that can be seen by the passenger.

  As shown in FIGS. 1 and 2, the airbag cover 10 is a cover member that covers the folded airbag 2 and is formed of a synthetic resin. For example, the entire airbag cover 10 is molded in the mold by injection molding using a mold. The airbag cover 10 includes a plate-shaped airbag grid 11, a peripheral wall 12 surrounding the folded airbag 2, an outer wall 13 positioned outside the peripheral wall 12 (opposite side of the airbag 2), A gap (called a gap) 14 formed between the outer walls 13 and a fixing portion 15 for fixing the holding member 4 are provided. The airbag 2 is disposed in the peripheral wall 12 and is covered with the airbag grid 11.

  The airbag grid 11 is a lid that closes the opening 94 of the instrument panel 91, and is formed in a shape corresponding to the opening 94. When the airbag cover 10 is attached to the instrument panel 91, the airbag grid 11 is fitted into the opening 94 from the front side of the instrument panel 91 and is disposed in the opening 94. In this state, the surface of the instrument panel 91 and the surface of the airbag grid 11 are arranged without a step. Further, the outer edge portion of the airbag grid 11 contacts the peripheral edge portion 95. Inside the vehicle 90, the airbag grid 11 is pushed open by the airbag 2 that is deployed.

  The peripheral wall 12 and the outer wall 13 are formed of a cylindrical portion formed on the back side (back side) of the airbag grid 11, and protrude from the airbag grid 11 to the back side of the airbag cover 10. Moreover, the surrounding wall 12 and the outer wall 13 are double walls which have the clearance gap part 14 between each other, and are juxtaposed in the state which opened the predetermined space | interval. The peripheral wall 12 is an inner wall formed on the inner side (the airbag 2 side) of the outer wall 13 and is disposed between the outer wall 13 and the airbag 2. The outer wall 13 is formed side by side with the peripheral wall 12, and the peripheral wall 12 and the outer wall 13 are arrange | positioned in parallel or non-parallel. Here, the outer wall 13 is located outside the entire peripheral wall 12 and surrounds the peripheral wall 12. The peripheral wall 12 and the outer wall 13 have similar shapes and protrude from the airbag grid 11 by the same distance.

  The gap 14 is a space (gap between walls) between the peripheral wall 12 and the outer wall 13, and is defined by the peripheral wall 12 and the outer wall 13. The fixing part 15 is a fixing means for fixing the holding member 4 in the gap part 14, and fixes the holding member 4 (insertion part 5) inserted into the gap part 14. The airbag cover 10 has a plurality of fixing portions 15 corresponding to the plurality of insertion portions 5 of the holding member 4. The plurality of insertion portions 5 are each fixed to the fixing portion 15. The peripheral wall 12 and the outer wall 13 are arranged at an interval at which the insertion portion 5 can be inserted, and the gap portion 14 is formed to have a dimension at which the insertion portion 5 can be inserted. The insertion part 5 of the holding member 4 is fixed to the fixing part 15 when it is inserted into the gap part 14 from the tip of the peripheral wall 12 and the outer wall 13 (open end of the gap part 14) and moves to the fixing part 15. The holding member 4 is fixed to the airbag cover 10 by the insertion portion 5 fixed to the fixing portion 15 and attached to the airbag cover 10 together with the airbag 2.

  The plurality of fixing portions 15 of the airbag cover 10 are respectively formed on one or both of the peripheral wall 12 and the outer wall 13 to fix the insertion portion 5 of the holding member 4. The plurality of insertion portions 5 are fixed to one or both fixing portions 15 of the peripheral wall 12 and the outer wall 13, respectively. Each fixing portion 15 has an insertion hole 16 formed in one or both of the peripheral wall 12 and the outer wall 13. That is, the fixing portion 15 and the insertion hole 16 are formed in the peripheral wall 12 and / or the outer wall 13, and the insertion portion 5 is fixed to the fixing portion 15 of the peripheral wall 12 and / or the outer wall 13. In the first embodiment, the fixing portion 15 and the insertion hole 16 are formed in the peripheral wall 12, and the insertion portion 5 is fixed to the fixing portion 15 of the peripheral wall 12 in the insertion hole 16. Other embodiments will be described later.

  The airbag cover 10 has a plurality of fixing portions 15 that are arranged in a distributed manner on the peripheral wall 12. The insertion hole 16 has a rectangular shape or a slit shape, and is formed in the fixing portion 15 of the peripheral wall 12. Here, the peripheral wall 12 and the outer wall 13 are formed in a rectangular shape having four wall surfaces and are thinner than the airbag grid 11. The plurality of fixing portions 15 and the insertion holes 16 are formed on two opposing wall surfaces (opposing wall surfaces 12 </ b> A) of the peripheral wall 12 corresponding to the plurality of insertion portions 5. The insertion hole 16 is a locking hole for locking the locking claw 5A of the insertion portion 5, and the fixing portion 15 is a locking portion for locking the locking claw 5A. The locking claw 5 </ b> A is inserted into the insertion hole 16 of the fixing portion 15 and is locked to the fixing portion 15. The locking claws 5 </ b> A of the plurality of insertion portions 5 are locked to the fixing portions 15 of the peripheral wall 12 in the insertion holes 16. The insertion portion 5 is fixed to the fixing portion 15 of the peripheral wall 12 by the locking claws 5 </ b> A locked to the fixing portion 15.

FIG. 3 is a diagram schematically showing a half cross section of the airbag apparatus 1A of the first embodiment, and shows a simplified airbag apparatus 1A. Moreover, 1 A of airbag apparatuses shown in FIG. 3 respond | correspond to the part containing the insertion part 5 on the left in the airbag apparatus 1A shown in FIG.
As illustrated, the fixing portion 15 has an insertion hole 16 formed in the peripheral wall 12, and the locking claw 5 </ b> A is inserted into the insertion hole 16 from the gap portion 14 (outer wall 13 side).

  The locking claw 5 </ b> A of the insertion portion 5 includes a protrusion that is hooked to the fixing portion 15 in the insertion hole 16, and is formed at the tip of the insertion portion 5 toward the inside (the peripheral wall 12 side). The locking claw 5 </ b> A is inserted into the insertion hole 16 of the fixed portion 15 and locked so as to be hooked on the fixed portion 15. Further, the protruding dimension of the locking claw 5 </ b> A is smaller than the thickness of the peripheral wall 12. Therefore, the locking claw 5A is locked to the fixing portion 15 of the peripheral wall 12 in a state that does not penetrate the insertion hole 16 (a state that does not protrude from the insertion hole 16 to the inside of the peripheral wall 12 (airbag 2 side)). The

  In a state where the insertion portion 5 of the holding member 4 is disposed in the gap portion 14, the locking claw 5 </ b> A is locked to the fixing portion 15, and the insertion portion 5 is fixed to the fixing portion 15. The insertion portion 5 is formed to have the same thickness as the gap portion 14 or thicker than the gap portion 14. When the insertion portion 5 is fixed to the fixing portion 15, the insertion portion 5 is disposed in the gap portion 14 while being sandwiched between the peripheral wall 12 and the outer wall 13, and contacts the peripheral wall 12 and the outer wall 13 in the gap portion 14. To do. When the insertion portion 5 is thicker than the gap portion 14, the insertion portion 5 widens the gap portion 14 and is disposed in the gap portion 14, and the peripheral wall 12 and the outer wall 13 are elastically deformed by the insertion portion 5.

  At the time of assembling the airbag apparatus 1A, the folded airbag 2 and inflator 3 are attached to the holding member 4. Next, the locking claws 5 </ b> A of the plurality of insertion portions 5 are pushed between the peripheral wall 12 and the outer wall 13 and inserted into the gap portion 14. Along with this, the peripheral wall 12 and the outer wall 13 are elastically deformed, and the locking claw 5 </ b> A moves along the peripheral wall 12 to the insertion hole 16. Subsequently, the locking claw 5A is inserted into the insertion hole 16 of the peripheral wall 12, and the peripheral wall 12 and the outer wall 13 are restored. When inserting the locking claw 5A into the gap portion 14, both the peripheral wall 12 and the outer wall 13 may be elastically deformed, or one of the peripheral wall 12 and the outer wall 13 may be elastically deformed.

  The locking claws 5 </ b> A of the plurality of insertion portions 5 are respectively disposed in the insertion holes 16 and hooked on the fixing portions 15 of the peripheral wall 12. Thus, the locking claw 5A is prevented from coming out of the insertion hole 16, the locking claw 5A is locked to the fixing portion 15, and the insertion portion 5 is fixed to the fixing portion 15. Moreover, the holding member 4 is attached to the airbag cover 10 by the insertion part 5, and the assembly of the airbag apparatus 1A is completed. The airbag 2 and the inflator 3 are attached to the airbag cover 10 and disposed in a space between the airbag cover 10 and the holding member 4. Thereafter, the airbag device 1 </ b> A is mounted on the vehicle 90.

  When the airbag 2 is inflated and deployed, the airbag 2 is inflated in the peripheral wall 12 by the gas supplied from the inflator 3 and pushes the airbag grid 11 toward the front side. The airbag grid 11 is deformed and curved to the front side by the force applied from the airbag 2. Subsequently, a tear line (not shown) formed on the airbag grid 11 is torn and a door portion is formed on the airbag grid 11. The airbag 2 is deployed in the vehicle compartment 96 by pushing the door portion open. At that time, the airbag 2 applies a force to the peripheral wall 12 by pushing the peripheral wall 12 to the outside (the outer wall 13 side). At the same time, the deployment direction of the airbag 2 is regulated by the peripheral wall 12, and the airbag 2 is deployed toward the airbag grid 11. Further, the airbag 2 is guided by the peripheral wall 12 and is deployed in the passenger compartment 96.

  When the airbag 2 is inflated and deployed, due to the force applied from the airbag 2, the peripheral wall 12 is deformed outward so as to inflate and is pressed against the insertion portion 5 and the outer wall 13. On the other hand, the insertion portion 5 in the gap portion 14 presses the peripheral wall 12 that deforms outward, and suppresses deformation of the peripheral wall 12. Further, the outer wall 13 suppresses the insertion portion 5 and also suppresses the peripheral wall 12 that is deformed outward, thereby suppressing the deformation of the peripheral wall 12. The peripheral wall 12, the insertion portion 5, and the outer wall 13 receive a force applied from the airbag 2 in a state where at least a part thereof is in contact.

  As described above, in the airbag apparatus 1A of the first embodiment, the holding member 4 can be easily attached to the airbag cover 10 by inserting the insertion portion 5 into the gap portion 14 and fixing the insertion portion 5 to the fixing portion 15. Can do. Therefore, the assembling work of the airbag device 1A can be facilitated, and the assembling workability can be improved. Further, the peripheral wall 12 or the outer wall 13 that holds the insertion portion 5 can prevent the insertion portion 5 from being detached from the fixing portion 15.

  The peripheral wall 12 can be pressed by the insertion portion 5 and the outer wall 13 to suppress deformation of the peripheral wall 12. At the same time, the peripheral wall 12, the insertion portion 5, and the outer wall 13 jointly receive a force applied to the peripheral wall 12 from the airbag 2. Therefore, it is not necessary to make the peripheral wall 12 and the outer wall 13 thick, and the peripheral wall 12 and the outer wall 13 can be made thinner than the conventional peripheral wall. Accordingly, since the peripheral wall 12 and the outer wall 13 are easily deformed, the holding member 4 can be easily attached to the airbag cover 10 by easily inserting the insertion portion 5 into the gap portion 14.

  As the peripheral wall 12 and the outer wall 13 become thinner, unevenness (cooling unevenness) is suppressed in the cooling method of the airbag grid 11 when the airbag cover 10 is formed. As a result, when the airbag grid 11, the peripheral wall 12, and the outer wall 13 are integrally formed, sink marks corresponding to the peripheral wall 12 and the outer wall 13 are less likely to occur on the surface of the airbag grid 11. Further, since the occurrence of sink marks is prevented only by forming the outer wall 13 on the outer side of the peripheral wall 12, the structure of the airbag cover 10 is suppressed from being complicated, and the structure of the airbag cover 10 can be simplified. it can. As a result, the weight of the airbag cover 10 can be reduced, and the airbag cover 10 can be easily molded. Since the molding process of the airbag cover 10 is simplified, labor and time required for molding the airbag cover 10 can be reduced.

  Therefore, sink marks can be easily prevented from being generated on the surface of the airbag grid 11 when the airbag cover 10 is molded, and the appearance of the airbag cover 10 can be improved. By making the peripheral wall 12 and the outer wall 13 thinner than the airbag grid 11, the influence of the peripheral wall 12 and the outer wall 13 on the sink marks of the airbag grid 11 can be reduced, and the occurrence of sink marks can be more reliably prevented.

  By inserting the locking claw 5 </ b> A of the insertion portion 5 into the insertion hole 16, the holding member 4 can be easily attached to a predetermined position of the airbag cover 10. Further, by locking the locking claw 5 </ b> A to the fixing portion 15 in the insertion hole 16, the insertion portion 5 can be easily and reliably fixed to the fixing portion 15. The movement of the airbag cover 10 relative to the holding member 4 can be suppressed by the locking claws 5 </ b> A in the insertion hole 16. When the airbag 2 is inflated and deployed, the peripheral wall 12 is pushed by the airbag 2 and deformed outward. As a result, the locking claw 5A is maintained in a state of being located in the insertion hole 16 of the peripheral wall 12, and the locking claw 5A is prevented from being detached from the fixing portion 15. When the locking claw 5A does not penetrate the insertion hole 16 and is locked to the fixing portion 15 of the peripheral wall 12, the contact between the locking claw 5A and the airbag 2 can be prevented.

  By inserting the insertion portion 5 between the peripheral wall 12 and the outer wall 13, the insertion portion 5 can be stably disposed in the gap portion 14. Further, since the peripheral wall 12 is firmly pressed by the insertion portion 5 and the outer wall 13, the deformation of the peripheral wall 12 can be reliably suppressed. When the insertion part 5 is thicker than the gap part 14, the insertion part 5 is arranged in the gap part 14 with the gap part 14 widened. As a result, even if the gap portion 14 is widened due to deterioration of the peripheral wall 12 and the outer wall 13 or the like, the insertion portion 5 is maintained between the peripheral wall 12 and the outer wall 13.

  The airbag device 1 </ b> A may be attached to the instrument panel 91 from the back side of the instrument panel 91. The insertion portion 5 may be fixed to the fixing portion 15 by a fixing mechanism other than the locking claw 5 </ b> A and the insertion hole 16. The peripheral wall 12 and the outer wall 13 may be formed to have the same thickness or different thicknesses. The peripheral wall 12 and the outer wall 13 may be formed so as to protrude from the airbag grid 11 by different distances. At that time, the peripheral wall 12 may be longer than the outer wall 13, and the outer wall 13 may be longer than the peripheral wall 12. The outer wall 13 may be formed so as to be located outside a part of the peripheral wall 12 in accordance with the number and position of the insertion portions 5. In this case, the gap portion 14 is formed outside a part of the peripheral wall 12.

  Next, an airbag device according to another embodiment (second to seventh embodiments) partially different from the airbag device 1A of the first embodiment will be described. The airbag devices of the second to seventh embodiments are basically configured in the same manner as the airbag device 1A of the first embodiment, and exhibit the same effects as the airbag device 1A of the first embodiment. Accordingly, in the following, items that are different from those already described will be described, and description of the same items as those already described will be omitted. Moreover, since the difference of the airbag apparatus of 1st-7th embodiment is only the insertion part 5 and the airbag cover 10, only the insertion part 5 and the airbag cover 10 are in 2nd-7th embodiment. explain.

(Second Embodiment)
FIG. 4 is a view showing the airbag apparatus 1B of the second embodiment, and shows the airbag apparatus 1B in the same manner as FIG.
As illustrated, in the airbag apparatus 1B of the second embodiment, the locking claw 5A of the insertion portion 5 is different from the airbag apparatus 1A of the first embodiment. The locking claw 5 </ b> A includes a hook that is hooked on the fixing portion 15, and has a hooking portion 5 </ b> B that is hooked on the fixing portion 15 outside the insertion hole 16. The locking claw 5 </ b> A penetrates the insertion hole 16 of the fixing portion 15 and is locked so as to be hooked on the fixing portion 15 of the peripheral wall 12.

  The hook portion 5B is a folded portion obtained by folding the insertion portion 5 and is located at the tip of the locking claw 5A. The locking claw 5A has a bent shape or a curved shape by the hook portion 5B. After the locking claw 5 </ b> A is inserted into the insertion hole 16, the hook portion 5 </ b> B is disposed inside the peripheral wall 12 and hooked to the fixing portion 15 on the opposite side of the gap portion 14. Thereby, the locking claw 5A is locked to the fixing portion 15 of the peripheral wall 12, and the locking portion 5B prevents the locking claw 5A from coming out of the insertion hole 16. Accordingly, it is possible to prevent the locking claw 5A from being detached from the fixing portion 15 and to reliably fix the insertion portion 5 to the fixing portion 15. The fixing portion 15 is sandwiched between the hook portion 5B and the insertion portion 5 in the gap portion 14.

(Third embodiment)
FIG. 5 is a view showing an airbag device 1C of the third embodiment, and shows the airbag device 1C in the same manner as FIG.
As illustrated, in the airbag device 1C of the third embodiment, the insertion portion 5 in the gap 14 is different from the airbag device 1A of the first embodiment. The insertion portion 5 of the holding member 4 has a protrusion 5 </ b> C that contacts the peripheral wall 12 or the outer wall 13 in the gap portion 14. Here, the protrusion 5 </ b> C is formed on the outer wall 13 side of the insertion portion 5 and contacts the outer wall 13. With the protrusion 5 </ b> C, the thickness of the insertion portion 5 can be adjusted in accordance with the size of the gap portion 14.

  For example, the insertion portion 5 including the protrusion 5 </ b> C is formed with the same thickness as the gap portion 14 or thicker than the gap portion 14 by the protrusion 5 </ b> C. When the insertion portion 5 is fixed to the fixing portion 15, the insertion portion 5 is disposed in the gap portion 14 while being sandwiched between the peripheral wall 12 and the outer wall 13. When the insertion portion 5 is thicker than the gap portion 14, the insertion portion 5 widens the gap portion 14 and is disposed in the gap portion 14. In addition, when the insertion part 5 has the protrusion 5C, the thickness of the insertion part 5 means the dimension of the thickness direction of the insertion part 5 including the height of the protrusion 5C. Moreover, you may form the hook part 5B in the insertion part 5 of 3rd Embodiment.

(Fourth embodiment)
FIG. 6 is a view showing an airbag device 1D of the fourth embodiment, and shows the airbag device 1D in the same manner as FIG.
As illustrated, in the airbag device 1D of the fourth embodiment, the insertion portion 5 and the fixing portion 15 are different from the airbag device 1A of the first embodiment. The fixing portion 15 is formed on the outer wall 13, and the insertion portion 5 is fixed to the fixing portion 15 of the outer wall 13. Further, the fixing portion 15 has an insertion hole 16 formed in the outer wall 13.

  The locking claw 5 </ b> A is formed at the distal end of the insertion portion 5 toward the outside (the outer wall 13 side), is inserted into the insertion hole 16 from the gap portion 14 (the peripheral wall 12 side), and is locked to the fixing portion 15. The insertion portion 5 is fixed to the fixing portion 15 of the outer wall 13 by the locking claw 5A. When the airbag 2 is inflated and deployed, the peripheral wall 12 is pushed by the airbag 2 and deformed outward, and the insertion portion 5 and the locking claw 5A are pushed by the peripheral wall 12 toward the outer wall 13 side. As a result, the locking claw 5A is maintained in a state positioned in the insertion hole 16 of the outer wall 13, and the locking claw 5A is prevented from being detached from the fixing portion 15. In addition, you may form the hook part 5B or the protrusion 5C in the insertion part 5 of 4th Embodiment.

(Fifth embodiment)
FIG. 7 is a view showing an airbag apparatus 1E of the fifth embodiment, and shows the airbag apparatus 1E in the same manner as FIG.
As illustrated, in the airbag apparatus 1E of the fifth embodiment, the insertion portion 5 is different from the airbag apparatus 1A of the first embodiment. The insertion portion 5 has a locking claw 5A that fits in the insertion hole 16, and the locking claw 5A has a pair of tapered portions T. By fitting the locking claw 5 </ b> A into the insertion hole 16, the locking claw 5 </ b> A can be prevented from moving in the insertion hole 16, and the insertion portion 5 can be stably fixed to the fixing portion 15.

  When the locking claw 5A is inserted into the insertion hole 16, in FIG. 7, the pair of tapered portions T hit the upper and lower edges of the insertion hole 16, and the vertical movement of the locking claw 5A and the insertion part 5 is restricted. The In this state, when the insertion portion 5 comes into contact with the outer wall 13, the insertion portion 5 is pressed by the outer wall 13, and the locking claw 5 </ b> A is prevented from coming out of the insertion hole 16. At the same time, in FIG. 7, the movement of the locking claw 5A and the insertion portion 5 in the left-right direction is restricted. The holding member 4 is firmly attached to the airbag cover 10 without moving relative to the airbag cover 10. In addition, you may form 5 C of protrusions in the insertion part 5 of 5th Embodiment. The fixing portion 15 and the insertion hole 16 may be formed in the outer wall 13, and the locking claw 5 </ b> A may be fitted into the insertion hole 16 of the outer wall 13.

(Sixth embodiment)
FIG. 8 is a view showing an airbag device 1F of the sixth embodiment, and shows the airbag device 1F in the same manner as FIG.
As illustrated, in the airbag device 1F of the sixth embodiment, the fixing portion 15 and the insertion portion 5 are different from the airbag device 1A of the first embodiment. The fixing portion 15 is formed on the peripheral wall 12 and the outer wall 13, and the insertion portion 5 is fixed to the fixing portion 15 of the peripheral wall 12 and the outer wall 13. The fixing portion 15 has an insertion hole 16 formed in the peripheral wall 12 and the outer wall 13. The fixing portion 15 and the insertion hole 16 are formed in alignment with the peripheral wall 12 and the outer wall 13, and are disposed at positions where the peripheral wall 12 and the outer wall 13 face each other.

  The insertion portion 5 has a pair of locking claws 5A that fit into the insertion holes 16 of the peripheral wall 12 and the outer wall 13, and each of the pair of locking claws 5A has a pair of tapered portions T. The locking claws 5 </ b> A are formed at the distal end of the insertion portion 5 toward the inside and the outside, and are inserted into the insertion holes 16 of the peripheral wall 12 and the outer wall 13 from the gap portion 14. Thereby, the locking claw 5A is simultaneously locked to the fixing portion 15 of the peripheral wall 12 and the outer wall 13, and the insertion portion 5 is simultaneously fixed to the fixing portion 15 of the peripheral wall 12 and the outer wall 13. By fixing the insertion portion 5 to the fixing portion 15 formed on both the peripheral wall 12 and the outer wall 13, the insertion portion 5 can be firmly fixed to the fixing portion 15. Further, the force applied from the insertion portion 5 to the fixing portion 15 can be distributed to the peripheral wall 12 and the outer wall 13. By fitting the locking claw 5 </ b> A into the insertion hole 16, the locking claw 5 </ b> A can be prevented from moving in the insertion hole 16, and the insertion portion 5 can be stably fixed to the fixing portion 15.

  When the locking claw 5A is inserted into the insertion hole 16, the tapered portions T of the pair of locking claws 5A hit the upper and lower edges of the insertion hole 16 in FIG. Movement is regulated. Further, the pair of locking claws 5 </ b> A are pressed by the peripheral wall 12 and the outer wall 13, and the locking claws 5 </ b> A are prevented from coming out of the insertion hole 16. At the same time, in FIG. 8, the lateral movement of the locking claw 5A and the insertion portion 5 is restricted. The holding member 4 is firmly attached to the airbag cover 10 without moving relative to the airbag cover 10. In addition, you may form 5 C of protrusions in the insertion part 5 of 6th Embodiment.

(Seventh embodiment)
FIG. 9 is a perspective view showing the airbag apparatus 1G of the seventh embodiment, and shows the airbag apparatus 1G viewed from the back side. 10 is a perspective view showing the airbag cover 10 as seen from the back side, and FIG. 11 is a perspective view showing the holding member 4 as seen from the front side.
As illustrated, in the airbag device 1G of the seventh embodiment, the fixing portion 15 and the insertion portion 5 are different from the airbag device 1A of the first embodiment. The airbag cover 10 has a plurality of fixing portions 15, and the holding member 4 has a plurality of insertion portions 5 that are fixed to the plurality of fixing portions 15 of the airbag cover 10.

  The plurality of fixing portions 15 include a plurality of fixing portions (first fixing portions 15 </ b> A) formed on the peripheral wall 12 and a plurality of fixing portions (second fixing portions 15 </ b> B) formed on the outer wall 13. The plurality of insertion portions 5 include a plurality of insertion portions (first insertion portion 5D) fixed to the first fixing portion 15A of the peripheral wall 12 and a plurality of insertion portions (first insertion portions) fixed to the second fixing portion 15B of the outer wall 13. 2 insertion portion 5E). The first insertion portion 5D has a locking claw 5A (inner locking claw) formed toward the inner side (the peripheral wall 12 side), and the second insertion portion 5E is formed toward the outer side (the outer wall 13 side). 5A (outside locking claw). The first insertion portions 5D and the second insertion portions 5E are alternately arranged along predetermined edges of the holding member 4. 15 A of 1st fixing parts and the 2nd fixing part 15B are the 1st insertion part 5D and the 2nd insertion part which were alternately formed in the surrounding wall 12 and the outer wall 13 in the predetermined | prescribed wall surface of the surrounding wall 12 and the outer wall 13, and are arrange | positioned alternately. Fix 5E.

  Here, the holding member 4 is formed in a rectangular shape having four sides (edge portions), and the first insertion portion 5 </ b> D and the second insertion portion 5 </ b> E are alternately arranged at the edge portion of the holding member 4. The peripheral wall 12 and the outer wall 13 are formed in a rectangular shape having four wall surfaces, and the first fixing portion 15A and the second fixing portion 15B are alternately formed on the opposing wall surfaces of the peripheral wall 12 and the outer wall 13. The locking claws 5A of the first insertion portion 5D and the second insertion portion 5E are inserted into the insertion holes 16 of the first fixing portion 15A and the second fixing portion 15B, respectively, and the first fixing portion 15A and the second fixing portion 15B are inserted. It is locked to. Thereby, the first insertion portion 5D and the second insertion portion 5E are fixed to the first fixing portion 15A and the second fixing portion 15B, respectively.

  In the seventh embodiment, the holding member 4 can be stably attached to the airbag cover 10 by the insertion portions 5D and 5E fixed to the peripheral wall 12 and the outer wall 13. Further, the force applied to the fixing portions 15A and 15B from the insertion portions 5D and 5E can be distributed to the peripheral wall 12 and the outer wall 13. When inserting the alternately arranged insertion portions 5D and 5E into the gap portion 14, the peripheral wall 12 is pushed by the first insertion portion 5D and deformed inward, and the outer wall 13 is pushed by the second insertion portion 5E. Deform outward. Along with this, the gap portion 14 greatly expands, so that the insertion portions 5D and 5E can be easily inserted into the gap portion 14 and fixed to the fixing portions 15A and 15B. In addition, you may form the hook part 5B or the protrusion 5C in the insertion parts 5D and 5E of 7th Embodiment.

  As mentioned above, although embodiment which attaches airbag apparatus 1A-1G to the instrument panel 91 was described, you may attach airbag apparatus 1A-1G to panels other than the instrument panel 91. FIG. Moreover, you may attach airbag apparatus 1A-1G to vehicle members other than a panel. That is, the present invention can be applied not only to a passenger seat airbag apparatus but also to various airbag apparatuses including an airbag cover.

  DESCRIPTION OF SYMBOLS 1A-1G ... Airbag apparatus, 2 ... Airbag, 3 ... Inflator, 4 ... Holding member, 5 ... Insertion part, 5A ... Locking claw, 5B ... Hook , 5C ... projection, 6 ... bracket, 10 ... airbag cover, 11 ... airbag grid, 12 ... peripheral wall, 13 ... outer wall, 14 ... gap, 15, ..Fixing part, 16 ... insertion hole, 90 ... vehicle, 91 ... instrument panel, 92 ... fixing member, 93 ... bolt, 94 ... opening, 95 ... Peripheral part, 96.

Claims (4)

An airbag device comprising: an airbag cover; an airbag disposed in the airbag cover; and a holding member that holds the airbag and is attached to the airbag cover,
The airbag cover includes an airbag grid that covers the airbag, a peripheral wall that is formed on the back side of the airbag grid and surrounds the airbag, an outer wall that is formed on the back side of the airbag grid and is located outside the peripheral wall, and between the peripheral wall and the outer wall. And a fixing portion that fixes the holding member inserted into the gap portion,
The holding member has an insertion portion that is inserted into the gap portion and fixed to the fixing portion, and is attached to the airbag cover by the insertion portion ,
The airbag cover has a plurality of fixing parts including a fixing part formed on the peripheral wall and a fixing part formed on the outer wall,
The holding member has a plurality of insertion portions fixed to the plurality of fixing portions of the airbag cover,
The airbag apparatus by which the insertion part fixed to the fixing | fixed part of a surrounding wall and the insertion part fixed to the fixing | fixed part of an outer wall are alternately arrange | positioned along the predetermined | prescribed edge part of a holding member . In the airbag apparatus described in Claim 1,
The airbag apparatus arrange | positioned in a clearance gap in the state where the insertion part of the holding member was pinched | interposed into the surrounding wall and the outer wall. In the airbag apparatus described in Claim 1 or 2,
An airbag device in which an insertion part of a holding member is thicker than a gap part, and the gap part is widened and disposed in the gap part. In the airbag apparatus as described in any one of Claim 1 thru | or 3,
The airbag apparatus in which the insertion part of a holding member has the protrusion which contacts a surrounding wall or an outer wall within a clearance gap part.

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