JP2014015087A - Jump base mounting structure of curtain air bag device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent fracture of a jump base made of resin with a simple configuration, and to stabilize the expansion direction of a curtain air bag.SOLUTION: A jump base 46 is configured such that a protrusion 94 projected from an outside end 72A in a vehicle body widthwise direction in a rib 72 provided to the side lower than a locking pawl locked to a roof side rail 14 is inserted into an insertion hole 96 formed in an inner panel 20. Then, gaps 98, 100 and 102 are set, respectively, between the protrusion 94 and the insertion hole 96, and between the outside end 72A in the vehicle body widthwise direction and the inner panel 20. Accordingly, when the moment M acts on the jump base 46 in the expansion of a curtain air bag 18, the jump base 46 can elastically be deformed to the outside in the body widthwise direction by each gap and can disperse a stress acting on the jump base 46. Then, the protrusion 94 and the outside end 72A in the vehicle body widthwise direction are brought into abutment with the inner panel 20, and thereby the displacement of a ramp 60 can be limited.

Description

  The present invention relates to an attachment structure for attaching a jump base of a curtain airbag device to a vehicle body.

  The curtain airbag device described in the following patent document includes a guide member (jump base) that guides the curtain airbag to deploy toward the passenger compartment when the curtain member (curtain airbag) is deployed. This jump base is formed separately from pillar trim (pillar garnish) by a resin material, and a pair of protrusions formed at the upper end are inserted into the insertion hole of the roof side rail inner panel, and the lower end is It is fastened and fixed to the inner panel by bolts and nuts. A guide portion (inclined portion) that descends inward in the vehicle width direction is formed at an intermediate portion in the vertical direction of the jump base, and the inflating direction of the curtain airbag is guided by the inclined portion.

JP 2008-230562 A

  In the curtain airbag device as described above, when the deployment pressure of the curtain airbag is input to the inclined portion of the resin jump table, an excessive force (moment) is applied to the jump table to push the inclined portion diagonally downward outward in the vehicle width direction. ) Acts and stress concentrates in the vicinity of the bolt at the lower end of the jump base. As a result, if the jump stand breaks in the vicinity of the bolt, the inclined portion may be displaced downward by the bag deployment pressure, and the deployment direction of the curtain airbag may become unstable.

  In consideration of the above facts, the present invention can prevent a resin jump table from being broken with a simple configuration, and can stabilize the deployment direction of the curtain airbag device. The purpose is to obtain.

  A jump base mounting structure for a curtain airbag device according to claim 1 is provided in a folded state between a roof side rail and a roof head lining, and the roof head lining is formed by a gas pressure generated by an inflator. A curtain airbag that extends into the vehicle compartment from between the door and the pillar garnish, and a locking portion that is formed of a resin material and is provided between the curtain airbag and the roof side rail, and is locked to the body inner panel. An inclined portion that descends inward in the vehicle width direction is provided on the lower side, and the deployment direction of the curtain airbag is guided by the inclined portion, and the vehicle width direction outside on the lower side of the locking portion. A protrusion protruding from the end toward the outside in the vehicle width direction is inserted into an insertion hole formed in the body inner panel. And a, and jumping the gap is set respectively between and between said body inner panel and the vehicle width direction outer end portion of said insertion hole and the protrusion.

  In the jump stand mounting structure of the curtain airbag device according to the first aspect, the curtain airbag is disposed in a folded state between the roof side rail and the roof head lining. Between the curtain airbag and the roof side rail, a jumping base having an inclined portion that descends inward in the vehicle width direction is provided. When the curtain airbag is deployed from between the roof head lining and the pillar garnish into the vehicle compartment by the gas from the inflator, the jump base guides the deployment direction of the curtain airbag by the inclined portion.

  Here, in the jump stand, a locking portion provided on the upper side of the inclined portion is locked to the body inner panel, and the vehicle is moved from the outer end in the vehicle width direction below the locking portion. A protruding portion protruding outward in the width direction is inserted into an insertion hole formed in the body inner panel. A gap (play) is set between the protrusion and the insertion hole, and between the outer end in the vehicle width direction and the body inner panel.

  For this reason, when the curtain airbag is deployed, an excessive load is applied to the slanted portion of the jumping base diagonally downward (in the direction perpendicular to the sloping portion) outside the vehicle width direction, and a moment acts on the jumping base. In this case, the jump base can be elastically deformed outward in the vehicle width direction with respect to the inner panel by the amount of the gaps. This elastic deformation can disperse the stress acting on the jumping base, and thereafter, the protrusion and the outer end in the vehicle width direction abut against the body inner panel, thereby limiting the displacement of the inclined portion. it can. Thereby, it is possible to prevent the jump base from being broken with a simple configuration, and to stabilize the deployment direction of the curtain airbag.

  A jumper base mounting structure for a curtain airbag device according to a second aspect of the present invention is the jumper base mounting structure according to the first aspect, wherein the gap between the outer end in the vehicle width direction and the body inner panel is above the protrusion. It is set larger on the lower side.

  In the invention according to claim 2, since the gap between the vehicle width direction outer side end portion of the jump base and the body panel is set as described above, the jump base is a locking portion on the upper side of the protrusion. As a fulcrum, it is possible to increase the deformation allowable amount when elastically deforming outward in the vehicle width direction. As a result, it is possible to effectively prevent the jump table from being broken. In addition, when the pillar is deformed inward in the vehicle width direction with the roof side rail as the center during a side collision, the load from the pillar is difficult to be input to the jump base due to the above configuration. It is possible to prevent displacement. Therefore, this also makes it possible to stabilize the deployment direction of the curtain airbag.

  A jump base mounting structure for a curtain airbag device according to a third aspect of the present invention is the jumper base mounting structure according to the first or second aspect, wherein the vehicle width direction outer end portion has a corner portion below the protrusion. The gap between the outer end in the vehicle width direction and the inner body panel is set larger on the lower side than on the upper side of the corner.

  In the invention according to claim 3, since the outer end in the vehicle width direction of the jump base is formed as described above, the protrusion of the jump base and the outer end in the vehicle width direction are separated from the body by the deployment pressure of the curtain airbag. Even after hitting the inner panel, the jump base can be elastically deformed with the corner portion as a fulcrum (center). Thereby, since it can suppress that stress concentrates on the periphery of the protrusion part and vehicle width direction outer side edge part in a jump stand, the fracture | rupture of a jump stand can be prevented effectively.

  As described above, in the jump stand mounting structure of the curtain airbag device according to the present invention, the resin jump stand can be prevented from being broken with a simple configuration, and the deployment direction of the curtain airbag is stabilized. be able to.

It is the perspective view which looked at the structure of the upper end side periphery of B pillar of the vehicle (automobile) to which the jump stand attachment structure of the curtain airbag apparatus which concerns on embodiment of this invention was applied from the vehicle interior side. It is a longitudinal cross-sectional view which shows the structure of the upper end side periphery of B pillar of the vehicle, and is a figure corresponding to the cut surface along the 2-2 line of FIG. It is a rear view of the jump stand which is a structural member of the curtain airbag device. It is a longitudinal cross-sectional view corresponding to the cut surface along line 4-4 in FIG. It is a longitudinal cross-sectional view corresponding to the cut surface along line 5-5 in FIG. It is the expanded sectional view which expanded a part of FIG.

  Hereinafter, the jump stand mounting structure 10 (hereinafter simply referred to as “jump stand mounting structure 10”) of the curtain airbag device according to the embodiment of the present invention will be described with reference to FIGS. In addition, the arrow FR, arrow UP, and arrow OUT that are appropriately described in each figure respectively indicate the front direction (traveling direction), the upward direction, and the outside in the vehicle width direction of the vehicle. Hereinafter, when the description is made simply using the front-rear direction and the up-down direction, the front-rear direction of the vehicle and the up-down direction of the vehicle are indicated unless otherwise specified.

<Configuration>
FIG. 1 is a longitudinal sectional view showing a partial configuration of a curtain airbag device 12 according to the present embodiment. As shown in FIG. 2, the curtain airbag device 12 includes a curtain airbag 18 disposed in a folded state between a roof side rail 14 and a roof head lining 16 of the vehicle body. First, the peripheral structure of the curtain airbag 18 will be described.

  The roof side rail 14 is configured by joining an inner panel (body inner panel) 20 and an outer panel 22, and is a skeleton member of a vehicle body that extends in the vehicle front-rear direction on both sides in the vehicle width direction at the top of the vehicle body. . Specifically, the roof side rail 14 is configured by joining the inner panel 20 and the outer panel 22 at least at the joint portion 24 on the inner side in the vehicle width direction. An outer reinforcement 26 is sandwiched between the inner panel 20 and the outer panel 22 and joined together at the joint 24. The outer end of the roof panel 27 in the vehicle width direction is joined to the joint 24. Further, the inner panel 20 and the outer reinforcement 26 are joined at the joint portion 28 on the outer side in the vehicle width direction with the upper end portion of the B pillar inner panel 32 of the B pillar 30 being sandwiched.

  The lower end portion of the outer panel 22 is continuous with the upper end portion of the B pillar outer panel 34. The lower part of the outer panel 22 is joined together with the outer reinforcement 26 and the inner panel 20 at the joint 28 between the A pillar and the B pillar (not shown) and between the C pillar and the B pillar 30 (not shown). As a result, the roof side rail 14 has a closed cross section (not shown). Further, 36 shown in FIG. 2 is a B-pillar outer reinforcement, and 38 shown in FIG. 2 is a center roof cross member spanned between the left and right roof side rails 14.

  The roof side rail 14 described above is covered from the inner side in the vehicle width direction (vehicle compartment 17 side) by the terminal portion 16A of the roof head lining 16. The above-described pillar inner panel 20 is covered from the vehicle compartment 17 side by a B pillar garnish 40 that is a pillar garnish. The B pillar garnish 40 is locked to the B pillar inner panel 20 by, for example, a clip (not shown).

  Next, the configuration of the curtain airbag device 12 will be described.

  As shown in FIG. 1, the curtain airbag device 12 includes a curtain airbag 18 described above, an inflator (gas generator) 42 that supplies gas into the curtain airbag 18, and a deployment direction of the curtain airbag 18. And a jump stand 46 (see FIG. 3).

  The curtain airbag 18 is disposed between the roof side rail 14 and the terminal portion 16A of the roof head lining 16 in a state of being folded in a long shape by a predetermined folding method (roll folding in this case). (In FIG. 2, the curtain airbag 18 is schematically shown for convenience of explanation). The curtain airbag 18 extends between the A pillar and the C pillar (not shown), for example, and extends in the vehicle front-rear direction so as to straddle the B pillar 30. A cylindrical gas supply port 18 </ b> A extends from an intermediate portion in the longitudinal direction of the curtain airbag 18. An inflator 42 is connected to the gas supply port 18A.

  The inflator 42 is formed in a substantially cylindrical shape, and is disposed between the roof side rail 14 and the roof head lining 16 in a state where the axial direction is along the vehicle front-rear direction. The inflator 42 is fixed to the inner panel 20 of the roof side rail 14 via a bracket (not shown).

  An air bag ECU (not shown) mounted on the vehicle is electrically connected to the inflator 42. A side collision detection sensor and a rollover sensor (not shown) mounted on the vehicle are electrically connected to the air bag ECU. It is connected to the. The airbag ECU activates the inflator 42 by energizing the inflator 42 when a side collision state or rollover state of the vehicle is detected by the side collision detection sensor and the rollover sensor.

  When the inflator 42 is operated, gas is ejected into the curtain airbag 18 through the gas supply port 18A. Thereby, the curtain airbag 18 is inflated, and the terminal portion 16A of the roof head lining 16 is pressed toward the vehicle compartment 17 by the inflation pressure of the curtain airbag 18. Then, as shown by a two-dot chain line in FIG. 2, the curtain airbag 18 is deployed in a curtain shape below the roof side rail 14 while bending (pushing open) the terminal portion 16 </ b> A toward the vehicle compartment 17 side. To do.

  On the other hand, the jump stand 46 is disposed between the curtain airbag 18 and the roof side rail 14 on the upper side of the B pillar 30. The jump base 46 is formed of a resin material, and is formed in a substantially rectangular shape when viewed from the vehicle width direction as shown in FIGS. The jump base 46 includes a main body 48 formed in a long plate shape along the vehicle longitudinal direction. The main body 48 is formed in a substantially arc shape with a cross-sectional shape seen from the vehicle front-rear direction projecting obliquely upward outward in the vehicle width direction, and the inner panel 20 of the roof side rail 14 and the curtain airbag 18. Is intervening between.

  Locking claws (locking portions) 50 and 52 that can be elastically deformed are integrally provided at both ends in the longitudinal direction of the main body 48 (both ends in the vehicle front-rear direction). As shown in FIG. 4, these locking claws 50, 52 are formed in a substantially U-shaped cross-section with the inner side in the vehicle width direction opened, and are respectively formed in the locking holes 54 formed in the inner panel 20. It is inserted. Further, on the base end side of the locking claws 50, 52, square tubular portions 56, 58 are provided so as to surround the base end sides of the respective locking claws 50, 52. The tips of the shaped portions 56 and 58 are in contact with the inner side surface of the inner panel 20 in the vehicle width direction. Thus, the inner panel 20 is sandwiched between the locking claws 50 and 52 and the cylindrical portions 56 and 58, and the jump base 46 is locked to the inner panel 20. In the present embodiment, the locking claw 50 and the cylindrical portion 56 on the vehicle front side are arranged with the vehicle vertical direction as the longitudinal direction when viewed from the vehicle width direction, and the locking claw 52 on the vehicle rear side and The cylindrical portion 58 is arranged with the longitudinal direction of the vehicle when viewed from the vehicle width direction.

  An inclined portion 60 extends from the lower end of the main body portion 48 toward an obliquely lower side on the inner side in the vehicle width direction. The inclined portion 60 is located on the lower side with respect to the curtain airbag 18, and the vehicle width direction outer end portion (lower end portion) is located near the lower end portion of the terminal portion 16 </ b> A of the roof head lining 16.

  A support portion 62 extends from the lower end of the inclined portion 60 toward the vehicle lower side. The support portion 62 extends along the lower end portion of the terminal portion 16A, and the support portion 62 is provided with a plurality of (here, three) bulge portions 62A that slightly bulge inward in the vehicle width direction. It has been. These bulging portions 62A are formed in a rectangular shape when viewed from the vehicle width direction, and the front end surfaces of these bulging portions 62A are in contact with the back surface of the lower end portion of the terminal portion 16A of the roof head lining 16. . Thus, the terminal portion 16A is prevented from being hit by a load from the inner side in the vehicle width direction.

  A lower wall portion 64 extends from the lower end of the support portion 62 toward an obliquely lower side on the outer side in the vehicle width direction, and the outer side in the vehicle width direction is opened by the inclined portion 60, the support portion 62, and the lower wall portion 64. A substantially U-shaped cross section is formed. Further, a plurality of ribs 66, 68, 70, 72, 74, 76 extending in the vehicle body vertical direction are provided on the back side (vehicle width direction outer side) of the main body portion 48, the inclined portion 60, the support portion 62 and the lower wall portion 64. 78 and 80 are provided integrally. Further, ribs 82, 84, 86, 88 extending in the vehicle up-down direction are formed on the upper and lower sides of each cylindrical portion 56, 58, respectively. These ribs improve the bending rigidity of the jump base 46.

  The ribs 66, 68, 78, 80 provided on both ends in the front-rear direction of the jump base 46 are formed with a pair of upper and lower protrusions 90, 92 that slightly protrude outward in the vehicle width direction. The tips of 90 and 92 are in contact with the inner side surface of the inner panel 20 in the vehicle width direction (see FIG. 5).

  Further, in the middle portion in the vertical direction of the pair of front and rear ribs (lower ribs) 72 and 76 provided on the lower side of the center side in the front and rear direction of the jump base 46, outer end portions 72A and 76A (hereinafter, referred to as the vehicle width direction), respectively. A columnar protrusion 94 protruding from the “outer ends 72A, 76A” to the outside in the vehicle width direction is integrally formed. These protrusions 94 are inserted into insertion holes 96 formed on the lower end side of the inner panel 20 of the roof side rail 14 as shown in FIGS. 2 and 6. These insertion holes 96 are formed in a circular shape having a larger diameter than the protrusions 94, and each protrusion 94 is inserted coaxially with respect to the insertion hole 96. Therefore, a ring-shaped gap 98 (see FIG. 6) is formed between each protrusion 94 and the inner periphery of the insertion hole 96.

  In addition, gaps 100 and 102 are formed on the upper and lower sides of each protrusion 94 between the outer ends 72A and 76A of the ribs 72 and 76 and the inner panel 20, respectively. The gap 102 on the lower side of each protrusion 94 is set larger than the gap 100 on the upper side of each protrusion 94.

  Further, corners 104 are formed below the projections 94 at the outer ends 72A and 76A of the ribs 72 and 76, and the outer ends 72A and 76A are located below the corners 104 at the vehicle side. It inclines toward the diagonally lower side on the inner side in the width direction. Accordingly, the gap between the outer end portions 72 </ b> A and 76 </ b> A and the inner panel 20 is set larger on the lower side than on the upper side of the corner portion 104.

<Action and effect>
Next, the operation and effect of this embodiment will be described.

  In the present embodiment, the curtain airbag 18 is disposed in a folded state between the roof side rail 14 and the roof head lining 16. Between the curtain airbag 18 and the roof side rail 14, a jump base 46 having an inclined portion 60 that descends inward in the vehicle width direction is provided. When the curtain airbag 18 is deployed into the passenger compartment 17 from between the roof head lining 16 and the B pillar garnish 40 by the gas from the inflator 42, the jumping base 46 is moved by the inclined portion 60. Guide the deployment direction. Thereby, generation | occurrence | production of the malfunction that the curtain airbag 18 expand | deploys between the B pillar 30 and the B pillar garnish 40 can be avoided.

  Here, in the jump base 46, locking claws 50 and 52 provided above the inclined portion 60 are locked to the inner panel 20 of the roof side rail 14. Further, the inner panel 20 is formed with a protruding portion 94 protruding outward from the outer end portions 72A, 76A of the ribs 72, 76 provided below the locking claws 50, 52 in the vehicle width direction. It is inserted into the insertion hole 96. A gap (play) 98 is set between each projection 94 and each insertion hole 96, and gaps (play) 100, 102 are formed between the outer end portions 72A, 76A and the inner panel 20. Is set.

  For this reason, when the curtain airbag 18 is deployed, an excessive force is input to the inclined portion 60 of the jump base 46 obliquely downward (in the direction orthogonal to the inclined portion 60) on the outer side in the vehicle width direction. When the moment M (see FIG. 2) is applied to the inner panel 20, the jump base 46 can be elastically deformed (rotated) outward in the vehicle width direction by the gaps 98, 100, and 102. This elastic deformation can disperse the stress acting on the jump base 46, and the projections 94 and the outer end portions 72A and 76A thereafter contact the inner body panel to limit the displacement of the inclined portion 60. Can do. Thereby, the break of the jump base 46 can be prevented with a simple configuration, and the deployment direction of the curtain airbag 18 can be stabilized, so that the deployment locus of the curtain airbag 18 can be made as intended. Become. Further, since it is not necessary to increase the strength of the jump base 46 in order to suppress breakage of the jump base 46, an increase in manufacturing cost and mass of the jump base 46 can be suppressed.

  Moreover, in the present embodiment, the gap 102 on the lower side of the protrusion 94 is set larger than the gap 100 on the upper side of the protrusion 94. For this reason, it is possible to increase the deformation allowable amount when the jump base 46 is elastically deformed outward in the vehicle width direction with the locking claws 50 and 52 above the protrusion 94 as fulcrums. As a result, breakage of the jump base 46 can be effectively prevented.

  Further, when the B pillar 30 is deformed inward in the vehicle width direction around the roof side rail 14 at the time of a side collision, the load from the B pillar 30 is difficult to be input to the jump base 46 by the above configuration. That is, at the time of a side collision, since the load from the bumper of the opponent vehicle is input to the lower side of the B pillar 30, the amount of deformation of the B pillar 30 inward in the vehicle width direction is greater on the lower side than on the upper side. For this reason, the lower end side of the hole edge of the insertion hole 96 is more greatly inward in the vehicle width direction than the upper end side. In the present embodiment, the lower gap 102 is the upper gap. Since it is set to be larger than 100, it is difficult for the jump base 46 to be pushed inward in the vehicle width direction by the inner panel 20, and the jump base 46 can be prevented from being inadvertently displaced by the load from the B pillar 30. . Accordingly, this also makes it possible to stabilize the deployment direction of the curtain airbag 18.

  Furthermore, in the present embodiment, the outer end portions 72A and 76A of the ribs 72 and 76 are formed with corners 104 below the protrusions 94, and the outer end portions 72A and 76A and the inner panel 20 are connected to each other. The gap between them is set larger on the lower side than on the upper side of the corner portion 104. For this reason, even after the projection 94 and the outer end portions 72A and 76A of the jump base 46 abut against the inner panel 20 due to the deployment pressure of the curtain airbag 18, the jump base 46 is elastically deformed with the corner portion 104 as a fulcrum (center). Can be made. Thereby, since it can suppress that stress concentrates on the periphery of the protrusion part 94 and outer side edge part 72A, 76A in the jump stand 46, the fracture | rupture of the jump stand 46 can be prevented effectively.

  In the present embodiment, the pair of front and rear projections 94 provided on the jump base 46 are inserted into the pair of front and rear insertion holes 96 formed in the inner panel 20. Since the contact with the inner periphery of the jump table 46 is supported, the support of the jump base 46 is stabilized, and the inclined portion 60 is prevented from tilting back and forth. Therefore, the deployment direction of the curtain airbag 18 can be stabilized also by this.

  In this embodiment, when the jump base 46 is attached to the roof side rail 14, the pair of locking claws 50 and 52 are inserted into the locking holes 54 of the inner panel 20, and the pair of protrusions 94 are Since it is only necessary to insert it into the insertion hole 96 of the panel 20, the mounting work of the jump stand 46 can be made extremely easy.

<Supplementary explanation of the embodiment>
In the above embodiment, the upper portion (main body portion 48) of the jump base 46 is configured to be locked to the inner panel 20 (body inner panel) by the pair of locking claws 50, 52. The upper part of the body may be locked (fastened) to the body inner panel by bolts and nuts or clips.

  In the above embodiment, the corners 104 are provided at the outer end portions 72A and 76A of the ribs 72 and 76 of the jump base 46. However, the shape of the ribs 72 and 76 is appropriately changed. can do.

  In the above embodiment, the gap 102 on the lower side of the protrusion 94 is set to be larger than the gap 100 on the upper side of the protrusion 94. However, the present invention is not limited to this. The size of the gap on the side can be changed as appropriate.

  Further, in the above embodiment, the insertion hole 96 into which the protrusion 46 of the jump base 46 is inserted is formed in the inner panel 20 of the roof side rail 14. What is necessary is just to be formed in the inner panel.

  Moreover, in the said embodiment, although it was set as the structure by which the jump stand 46 was provided in the upper end side of B pillar, it is not restricted to this, It is set as the structure by which the jump stand was provided in the upper end side of other pillars, such as C pillar. Also good.

  In addition, the present invention can be implemented with various modifications without departing from the scope of the invention. It goes without saying that the scope of rights of the present invention is not limited to the above embodiment.

DESCRIPTION OF SYMBOLS 10 Jump stand mounting structure of curtain airbag device 12 Curtain airbag device 14 Roof side rail 16 Roof head lining 18 Curtain airbag 20 Inner panel (body inner panel)
40 B pillar garnish 42 Inflator 46 Jump stand 60 Inclined part 72A, 76A Outer end part in the vehicle width direction 94 Projection part 96 Insertion hole 98, 100, 102 Gap 104 Corner part

Claims (3)

A curtain airbag that is disposed in a folded state between the roof side rail and the roof head lining, and that is deployed from between the roof head lining and the pillar garnish into the vehicle interior by the pressure of the gas generated by the inflator;
An inclined portion that is formed of a resin material and is provided between the curtain airbag and the roof side rail, and descends inward in the vehicle width direction below the locking portion locked to the body inner panel. And a projecting portion projecting outward from the outer end in the vehicle width direction on the lower side of the locking portion toward the outer side in the vehicle width is guided by the inclined portion. A jump base that is inserted into an insertion hole formed in an inner panel, and a gap is set between the protrusion and the insertion hole and between the outer end in the vehicle width direction and the body inner panel;
A jump base mounting structure for a curtain airbag device equipped with   The jump base mounting structure for a curtain airbag device according to claim 1, wherein a gap between the outer end portion in the vehicle width direction and the inner body panel is set larger on the lower side than on the upper side of the protrusion. .   A corner portion is formed on the vehicle width direction outer side end portion below the protrusion, and a gap between the vehicle width direction outer end portion and the body inner panel is formed above the corner portion. The jump stand structure of the curtain airbag device according to claim 1, wherein the jump base structure is also set to be large on the lower side.