JP5799978B2 - Clip and curtain airbag mounting structure - Google Patents

Description

  The present invention relates to a clip and a curtain airbag mounting structure using the clip. Hereinafter, the curtain airbag is also referred to as “CSA”. CSA is an abbreviation for Curtain Shield Airbag.

  Patent Document 1 discloses a conventional clip of a lock pin type in which a CSA is attached to a vehicle body, for example, an inner panel of a front pillar (also referred to as A pillar). Conventional clips have a clip body and a lock pin. The clip body includes a seat, a single leg extending in a direction away from the seat and inserted into the clip mounting hole of the body, and a pair of latches disposed in openings provided on both sides of the leg. And nails. The pair of locking claws extend from the joint portion with the leg portion away from the seat portion toward the seat portion. The outer surface of the locking claw is inclined in a direction approaching the clip center axis as it moves away from the seat.

  When the CSA is deployed, a tensile load is applied to pull the clip from the CSA in an oblique direction. Of this oblique tensile load, the load component in the clip axial direction is received by the clip axial shear strength of the locking claw, and the load component in the direction orthogonal to the clip axial direction is orthogonal to the clip axial direction of the leg. It is received by the shear strength in the direction.

JP 2010-144830 A

  However, the conventional clip such as Patent Document 1 in which the locking claw extends toward the seat has the following problems.

  Since the leg and the locking claw can be inserted through the clip mounting hole of the body when the clip is assembled, the protruding amount of the locking claw from the outer surface of the leg cannot be increased. It is not possible to increase the allowance of the hooking claw on the edge of the clip mounting hole. Therefore, when a request to increase the clip axial strength of the locking claw occurs, it may be difficult to satisfy the request. In addition, when the locking claw is provided at the opening of the leg, and the width of the locking claw is narrower than the width of the leg, there is a demand for further increasing the clip claw axial strength of the locking claw , It may be difficult to satisfy that requirement. Furthermore, if the width of the locking claw is too large, the leg portion width is reduced and the leg portion may break.

  In addition, since the opening where the locking claws are arranged is provided on both sides of the leg, the cross-sectional area of the leg in the direction perpendicular to the axis is the cross-sectional area when the inside of the outer shape of the leg is almost buried. The shear strength in the direction perpendicular to the axis of the leg is small. Therefore, even if it is intended to further increase the strength of the leg in the direction perpendicular to the axis, it may be difficult to satisfy the requirement.

  An object of the present invention is to provide a clip with improved strength and a CSA mounting structure using the clip.

  The clip of the present invention that achieves the above object and the CSA mounting structure using the clip can take the following modes. Reference numerals in parentheses correspond to numbers appearing in the drawings.

In the first aspect of the invention, the clip (10) comprises a clip body (20). The clip body (20) includes a pair of locking claws (30) that can be deformed in a direction approaching each other. The pair of locking claws (30) have inner surfaces (34) facing each other. Concavities and convexities (36) are provided on at least a part of the inner side surfaces (34) of the pair of locking claws (30) . The unevenness (36) provided in each locking claw (30) is a comb-shaped unevenness having a plurality of convex portions (36a) and a plurality of concave portions (36b) extending in the clip axis direction.
The unevenness (36) of one locking claw (30) and the unevenness (36) of the other locking claw (30) are the convex portion (36a) of one locking claw (30) and the other locking claw. (30) as the concave portion and (36b) with the recess (36b) is opposed locking claws (30) of the convex portion and (36a) one of the opposing other locking claws (30) of alternately It is shifted .
When the pair of locking claws (30) are tilted inward so as to approach each other, the convex portion (36a) of one locking claw (30) is received in the concave portion (36b) of the other locking claw (30), The convex portion (36a) of the other locking claw (30) is received in the concave portion (36b) of the one locking claw (30).

  In the second aspect of the present invention, in the first aspect, the clip body (20) has a seat (24). The pair of locking claws (30) are coupled to the seat (24) and extend in a direction away from the seat (24), and are connected to the shaft (40) and away from the seat (24). It consists of a nail | claw part (50) extended in a direction. The claw portions (50) of the pair of locking claws (30) are formed with protruding portions (56) protruding in directions away from each other.

  In the third aspect of the present invention, in the second aspect described above, the protrusion (56) is formed on the claw portion (50) over the entire width or almost the entire width of the locking claw (30). Here, “substantially full width” includes a range of about ± 20% of “full width” (hereinafter the same).

The fourth aspect of the present invention corresponds to the case where the clip (10) includes the lock pin (60) in any one of the first to third aspects. The lock pin (60) has a side surface (68). A space portion (38) is provided between the inner side surfaces (34) of the pair of locking claws (30), and the lock pin (60) can be inserted into the space portion (38). Lock pin (60)
Is inserted into the space portion (38), the tip surface of the convex portion (36a) of the inner side surface (34) of the pair of locking claws (30) comes into contact with the side surface (68) of the lock pin (60). The deformation of the locking claws (30) in the direction approaching each other is suppressed.

According to a fifth aspect of the present invention, in the fourth aspect, the unevenness (36) is formed on at least a part of the shaft part (40) and at least a part of the claw part (50) of the pair of locking claws (30). Is formed. The portion of the lock pin (60) corresponding to the shaft portion (40) of the locking claw (30) has a shaft of the locking claw (30) when the lock pin (60) is inserted into the space portion (38). The uneven part (70) which has the convex part (70a) which penetrates into the recessed part (36b) formed in the part (40) is formed.
According to a sixth aspect of the present invention, in the fourth aspect, the rock and pin (60) has a pin leg (66), the pin leg (66) has a constant thickness portion (72) on the root side, and a clip. It has a concavo-convex part (70) composed of a convex part (70a) and a concave part (70b) extending in the axial direction, and a constant tip-side thick part (74) thinner than the base-side constant thickness part (72).
When the lock pin (60) is inserted into the space portion (38), the tip surface of the convex portion (36a) of the inner surface (34) of the pair of locking claws (30) is formed on the tip side constant thickness portion (74). The pair of locking claws (30) are prevented from deforming in the direction approaching each other by abutting against the side surface (68), and the protrusion of the lock pin (60) is formed at a portion corresponding to the claw portion (50) of the locking claws (30). The portion (70a) enters the recess (36b) on the inner surface (34) of the locking claw (34) and fills the recess (36b).

In the seventh aspect of the present invention, the CSA attachment structure (2) attaches the CSA (80) to the vehicle body (90) using the clip (10) of any one of the first to sixth aspects. It consists of a structure.

According to a clip according to the first aspect, that has irregularities provided on the inner surface facing the pair of latch lugs. The unevenness provided in each locking claw is a comb-like unevenness having a plurality of convex portions and a plurality of concave portions extending in the clip axis direction.
The unevenness of irregularities and other locking pawl of the one locking pawl, the convex portion and the other locking claw of one of the locking claw recess and opposing to the other locking pawl projections and the one They are staggered so that the recesses of the locking claws face each other.
When the pair of locking claws are tilted inward so as to approach each other, the convex portion of one locking claw is received in the concave portion of the other locking claw, and the convex portion of the other locking claw is Received in the recess.
As a result, the deformable amount in the direction in which the pair of locking claws approach each other, that is, the amount of inward tilt, is increased as compared with the case where the unevenness is not provided.
As a result, while allowing the pair of locking claws to be inserted into the clip mounting holes, it is possible to increase the amount of engagement of the pair of locking claws with the clip mounting hole edge in the locking claw deformation direction, and The bending rigidity of the locking claw itself can be increased. As a result, shaving, crushing deformation and bending deformation of the locking claw in the clip axial direction are suppressed, and the holding force of the clip is increased.

  According to the clip according to the second aspect, the locking claw composed of the shaft portion and the claw portion extends in a direction away from the seat portion, and the claw portions of the pair of locking claws have protrusions protruding in the direction away from each other. Is formed. Therefore, compared to conventional clips where the distance from the clip center axis decreases as the outer surface of the locking claw moves away from the seat, the protruding part may have a large allowance with the clip mounting hole edge. And has a large shear cross-sectional area in the direction along the clip center axis through the inner surface of the clip mounting hole. As a result, when a load is applied to the protrusion from the edge of the clip attachment hole, the protrusion can withstand a sufficient shear strength.

According to the clip according to the third aspect, since the protrusion is formed on the claw part over the entire width or almost the entire width of the locking claw, the locking claw (corresponding to the claw part in the present invention) has the leg (the book). The shear strength of the locking claw and the claw portion in the clip axis direction and the direction perpendicular to the clip axis direction is increased as compared with the conventional clip formed only in a part of the width direction of the locking claw in the invention. .

  According to the clip which concerns on a 4th aspect, the deformation | transformation of the direction which a pair of latching claw approaches mutually is suppressed by inserting a lock pin in a space part, and a lock pin can be attached to a clip attachment hole edge.

According to the clip of the fifth aspect, when the lock pin is inserted into the space portion, the convex portion of the concave and convex portion of the lock pin enters the concave portion formed in the shaft portion of the locking claw, so the concave portion of the shaft portion Even when the clip is almost filled and the clip receives a shearing force from the edge of the clip mounting hole in the direction perpendicular to the axis, the deformation of the clip is suppressed and the holding force of the clip is increased.
According to the clip according to the sixth aspect, when the lock pin is inserted into the space portion, the front end surfaces of the convex portions on the inner side surfaces of the pair of locking claws abut against the side surfaces of the front end side constant thickness portion. The locking claw of the body is tilted inward and cannot be deformed, and the lock pin is locked at the edge of the clip mounting hole of the body so that it cannot be removed.

According to the CSA attachment structure according to the seventh aspect, since the CSA is attached to the vehicle body using a clip having a large strength, a CSA attachment structure with improved CSA retention strength can be provided.

It is a perspective view of the clip concerning one example of the present invention just before a lock pin is inserted in a clip main part. It is a perspective view of the clip of FIG. 1 when the lock pin is locked in the temporary holding hole. FIG. 2 is a perspective view of the clip of FIG. 1 when a lock pin is locked in a main holding hole. It is a front view of the clip of FIG. It is a top view of the clip of FIG. It is a bottom view of the clip of FIG. It is a side view of a clip in the state where the clip of Drawing 4 was attached to the clip attachment hole of a body. It is the sectional view on the AA line of the clip of FIG. It is the BB sectional view taken on the line of the clip of FIG. It is sectional drawing of the CSA attachment structure based on one Example of this invention. It is a clip arrangement | positioning figure of the CSA attachment structure of FIG.

The CSA attachment structure 2 which has the clip 10 which concerns on one Example of this invention, and the clip 10 as a main part is demonstrated with reference to FIGS. 1 to 9 show the clip 10, and FIGS. 10 and 11 show the CSA mounting structure 2. In the figure , P indicates a direction orthogonal to the CSA longitudinal direction. In FIGS. 10 and 11, FR indicates the front of the vehicle, IN indicates the inner side direction of the vehicle left-right direction, and UP indicates the upper side.

As shown in FIG. 1, the clip 10 includes a clip body 20. The clip 10 may include a lock pin 60 that is separate from the clip body 20.
The clip body 20 is made of a flexible resin material. The resin material is, for example, polyhexamethylene adipamide. However, other resin materials may be used as long as they are flexible and have a necessary strength. When the lock pin 60 is provided, the lock pin 60 is made of a resin material. The resin material of the lock pin 60 may or may not have flexibility. When the lock pin 60 is made of a flexible resin material, the lock pin 60 may be made of the same resin material as the clip body 20.

As shown in FIGS. 1 to 7, the clip main body 20 includes a head 22 and a pair of locking claws 30. The head 22 includes a seat 24. The outer shape of the cross section perpendicular to the clip center axis 10a of the head 22 and the pair of locking claws 30 is a rectangular shape with rounded corners. As shown in FIG. 10, when the CSA 80 is attached to the body 90 with the clip 10, the direction in which the long sides of the rectangular outer shape of the head 22 and the pair of locking claws 30 extend and the direction in which the CSA main body 80a extends. Are parallel to each other.

  As shown in FIGS. 1 and 2, when the lock pin 60 is provided, the clip body 20 has a lock pin insertion hole 20a extending in the direction along the clip center axis 10a at the center of the head. The central axis of the lock pin insertion hole 20a coincides with the clip central axis 10a. The lock pin insertion hole 20 a passes through the head 22 and communicates with the space 38 between the pair of locking claws 30. A part of the lock pin 60 can be inserted into the space 38 through the lock pin insertion hole 20a.

The pair of locking claws 30 are coupled to the head 22 at the head side end of the locking claw 30, extend in a direction away from the head 22, and are free ends on the side away from the head 22 of the locking claw 30. Ends at the end. The pair of latching claws 30 extends in the clip axis direction of the latching claws 30 (direction in which the clip center axis 10a extends) or in a direction orthogonal to the clip axis direction except for the head side end of the latching claws 30. Are separated from each other. The space 38 is located between the pair of separated locking claws 30. As shown in FIG. 7, the space portion 38 extends in the direction away from the seat portion 24 in the clip axis direction, and is open at the end portion of the space portion 38 opposite to the seat portion 24. The space 38 extends in a direction in which the long sides of the rectangular outer shape of the pair of locking claws 30 extend in a direction orthogonal to the clip axis direction, or the long side of the rectangular outer shape of the pair of locking claws 30 extends. Extending across the entire width of the space 38 and open at both ends of the space 38.

  Since each clip claw 30 is made of a resin material having flexibility, each of the lock claws 30 is formed in a direction in which the pair of lock claws 30 approach each other, that is, inward, around the head side end portion of each lock claw 30. It can be elastically deformed in the falling direction. Each locking claw 30 has an outer side surface 32 and an inner side surface 34 facing each other. The space 38 is located between the inner side surfaces 34 of the pair of locking claws 30.

As shown in FIG. 6 to FIG. 9, the locking claws 30 are formed on the inner surfaces 34 of the pair of locking claws 30 facing each other from the seat portion 24 site or from a portion spaced from the seat portion 24 in the clip axis direction. Concavities and convexities 36 are provided on the tip side portion. The unevenness 36 of one locking claw 30 is uneven in a direction facing the other locking claw 30. The unevenness 36 is provided so that the convex portion 36 a of the concave and convex portion 36 of one locking claw 30 and the concave portion 36 b of the concave and convex portion 36 of the other locking claw 30 face each other. That is, the pair of latching claws 30 have comb-like irregularities 36 on the inner side surface 34, and the irregularities 36 of one latching claw 30 and the irregularities 36 of the other latching claw 30 are one latching claw. The projections 36a of the 30 and the recesses 36b of the other locking claw 30 are alternately shifted in the direction in which the long sides of the rectangular outer shape of the pair of locking claws 30 extend. The convex portion 36a and the concave portion 36b extend in the clip axis direction in the illustrated example .

Since the convex portion 36a of one locking claw 30 and the concave portion 36b of the other locking claw 30 face each other, when the lock pin 60 is not inserted into the space portion 38, the pair of locking claws 30 are mutually connected. When it falls inward in the approaching direction, the convex portion 36 a of one locking claw 30 is received in the concave portion 36 b of the other locking claw 30. As a result, the amount of the pair of locking claws 30 that can fall inward is increased as compared with the case where the unevenness 36 is not provided, that is, when the inner surface is a flat surface. Even when the pair of latching claws 30 extends in the direction away from the seat portion 24 and ends at the free end, the pair of latching claws 30 approaches the seat portion 24 as in the conventional clip. It also holds if it extends and ends at the free end.

  When the pair of locking claws 30 extends in the direction away from the seat portion 24 and ends at the free end, the clip 10 further has the following structure.

  As shown in FIG. 7, the head portion 22 includes a seat portion 24 that is orthogonal to the clip center axis 10a, a narrow portion 22a that is located on the opposite side of the locking claw 30 from the seat portion 24, and a narrow portion 22a. A connecting portion 22b for connecting the seat portion 24; The width of the narrow portion 22a is narrower than the width of the seat portion 24, and the width of the connecting portion 22b gradually increases as the seat portion 24 is approached from the narrow width portion 22a.

  The pair of locking claws 30 includes a shaft portion 40 coupled to the seat portion 24 and extending in a direction away from the seat portion 24, and a claw portion 50 connected to the shaft portion 40 and extending in a direction away from the seat portion 24. The claw portion 50 is a portion of the locking claw 30 that is located on the tip side from the shaft portion 40. Protruding portions 56 that protrude in directions away from each other are provided on the outer surfaces of the claw portions 50 of the pair of locking claws 30. The projecting portion 56 constitutes a part of the claw portion 50 and is located on the outer side (the side far from the space portion 38) in the direction parallel to the seat portion 24 with respect to the extension line in the direction away from the seat portion 24 on the outer surface of the shaft portion 40 It is.

  When the pair of locking claws 30 are inserted into the clip mounting holes 92 of the body 90 and the clip 10 is mounted on the vehicle body 90, the shaft portion 40 of the locking claws 30 faces the inner peripheral surface of the clip mounting hole 92. The claw portion 50 passes through the clip attachment hole 92, and the claw portion 50 does not face the inner peripheral surface of the edge of the clip attachment hole 92. The amount of interference between the maximum protrusion 56 a of the protrusions 56 and the edge of the clip attachment hole 92 of the vehicle body 90 corresponds to the edge of the clip attachment hole 92 of the locking claw 30 when the clip 10 is attached to the body 90. This is a charge D (FIG. 7).

  The pair of shaft portions 40 includes an outer surface 42 that is separated from each other and an inner surface 44 that faces each other. A pair of nail | claw part 50 has the outer side surface 52 which mutually separated, and the inner side surface 54 which mutually opposes. The inner side surface 34 of the locking claw 30 has an inner side surface 44 of the shaft portion 40 and an inner side surface 54 of the claw portion 50. The outer surface 32 of the locking claw 30 has an outer surface 42 of the shaft portion 40 and an outer surface 52 of the claw portion 50. The outer surface 52 of the claw portion 50 has an engagement surface 52a that can be engaged with an edge portion of the clip attachment hole 92 when the clip 10 is attached to the body 90, and a clip that is connected to the engagement surface 52a and moves away from the seat portion 24. An enlarged inclined surface 52b that inclines so that the distance from the central axis 10a increases, and a reduced inclined surface 52c that connects to the enlarged inclined surface 52b and inclines so that the distance from the clip central axis 10a decreases as the distance from the seat portion 24 increases. And have. The maximum protrusion 56a is located at the transition from the enlarged inclined surface 52b to the reduced inclined surface 52c.

  By providing the claw portion 50 with the enlarged inclined surface 52b, the amount of interference with the edge of the clip mounting hole 92 of the locking claw 30 may be reduced even when the clip 10 is inclined due to an oblique load. It is suppressed. Further, by providing the reduced inclined surface 52c at the distal end portion of the claw portion 50, the pair of locking claws 30 are automatically tilted inward simply by pushing the clip 10 into the clip mounting hole 92 when the clip is attached. Can pass through the clip mounting hole 92.

  The protrusion 56 of each claw 50 is formed integrally with each locking claw 30 over the entire width or almost the entire width of each locking claw 30 in the direction orthogonal to the clip axis direction. Part of. On the other hand, in the conventional clip, when the pair of locking claws are arranged at the opening portion of the leg portion and extend in the direction approaching the seat portion and end at the free end, the locking claw is extended over the full width or almost the full width of the leg portion. Since it cannot form, the clip axial direction shear strength of a latching claw cannot be taken as large as this invention. Further, in the conventional clip, when the clip is inclined due to an oblique load, the clip axial shear longitudinal cross-sectional area of the locking claw is reduced, so that the clip axial shear strength of the locking claw is as large as the present invention. I can't take it.

  In the case of a clip with a lock pin as shown in FIGS. 1 to 9, the clip 10 includes a lock pin 60. As shown in FIG. 1, the lock pin 60 has a pin head 62 and a pin leg 66. A pin claw portion 64 is formed on the pin head 62. On the other hand, the head 22 of the clip body 10 receives the pin claw 64 in the wall of the lock pin insertion hole 20a and temporarily holds the lock pin 60, and the pin claw 64 and receives the pin claw 64. A book holding hole 28 for holding the book 60 is formed. In the lock pin insertion hole 20 a, the main holding hole 28 is provided on the back side of the temporary holding hole 26.

  The lock pin 60 has a side surface 68. The pin leg portion 66 of the lock pin 60 includes a root-side constant thickness portion 72, an uneven portion 70, and a tip-side constant thickness portion 74 that is thinner than the root-side constant thickness portion 72. The uneven part 70 has a convex part 70a and a concave part 70b. The lock pin thickness at the convex portion 70a is equal to the lock pin thickness at the root side constant thickness portion 72, and the lock pin thickness at the concave portion 70b is equal to the lock pin thickness at the tip side constant thickness portion 74.

  The pin leg portion 66 of the lock pin 60 can be inserted into the space portion 38 between the inner side surfaces 34 of the pair of locking claws 30. As shown in FIG. 9, when the lock pin 60 is inserted into the space portion 38, the tip surface of the convex portion 36 a of the unevenness 36 provided on the inner side surface 34 of the pair of locking claws 30 is the side surface 68 of the lock pin 60. In addition, for example, the deformation in the direction in which the pair of locking claws 30 approach each other by abutting against the side surface 68 of the distal end side constant thickness portion 74 is suppressed. At the claw portion 50, the lock pin 60 does not enter the recess 36b of the recess 36 and does not fill the space in the recess 36b.

  The unevenness 36 on the inner side surface 34 of the pair of locking claws 30 is formed on at least a part of the shaft part 40 and at least a part of the claw part 50 of the pair of locking claws 30. The concavo-convex portion 70 of the lock pin 60 is formed at a portion corresponding to the shaft portion 40 of the locking claw 30 when the pin leg portion 66 of the lock pin 60 is inserted into the space portion 38. As shown in FIG. 8, the convex portion 70 a of the concave and convex portion 70 of the lock pin 60 enters the concave portion 36 b of the pair of locking claws 30 when the pin leg portion 66 of the lock pin 60 is inserted into the space portion 38. Then, the recess 36b is filled with almost no gap.

  10 and 11 show the CSA mounting structure 2. The CSA attachment structure 2 may be referred to as a CSA attachment device 2. The CSA attachment structure 2 includes a CSA 80, a vehicle body 90 to which the CSA 80 is attached, and the above-described clip 10 for attaching the CSA 80 to the vehicle body 90.

  The vehicle body 90 to which the CSA 80 is attached is, for example, an A pillar. However, it is not limited to the A pillar. When the body 90 is an A pillar, the body 90 includes an inner panel 90a, an outer panel 90b, and a reinforcement 90c. FIG. 10 also shows a vehicle front shield glass 94, a weather strip 96, and an A pillar garnish 98.

The CSA 80 includes a main body 80a and a tab 80b. The CSA 80 is made of cloth and is housed in a space between the A pillar garnish 98 and the inner panel 90a in a state of being folded by roll folding or bellows folding. The outer shape of the cross section of the main body 80a of the CSA 80 is substantially circular as shown in FIG. 10 in the case of roll folding, and is substantially rectangular in the case of bellows folding. The CSA main body 80 a is located on the opposite side (vehicle rear side) of the clip 10 from the front shield glass 94, and extends along the CSA longitudinal direction L.

As shown in FIG. 10, the clip 10, the tabs 80b and the resin spacer 82 of CSA80, a state sandwiched between the head 22 and the inner panel 90a of the clip 10, Re mounting et to the inner panel 90a The

  As shown in FIG. 10, since the width of the narrow portion 22a of the head portion 22 of the clip body 20 is narrower than the width of the seat portion 24 in the direction P perpendicular to the CSA longitudinal direction, the outer shape of the cross section of the CSA 80 is the clip center axis. The width of the A pillar garnish 98 can be narrowed.

As shown in FIG. 10, the pair of locking claws 30 are inserted through the clip attachment holes 92 of the body 90 in a state where the clip 10 is attached to the body 90. When the pair of locking claws 30 are inserted through the clip mounting holes 92, the lock pin 60 is in the temporary holding hole 26 position, and the pin leg portion 66 is not inserted into the space 38 between the pair of locking claws 30. The pair of locking claws 30 can be deformed inwardly. After the pair of locking claws 30 are inserted through the clip mounting holes 92, the lock pin 60 is pushed from the temporary holding hole 26 to the main holding hole 28, and the pin leg portion 66 is inserted into the space 38 between the pair of locking claws 30. It is inserted and the pair of locking claws 30 is prevented from being deformed in a direction approaching each other. When the lock pin 60 is pushed into the main holding hole 28, the clip 10 is locked to the body 90 so that it cannot be removed.

  As shown in FIGS. 10 and 11, at the time of a vehicle collision, an inflation gas is supplied from an inflator (not shown), the CSA 80 expands, and the A pillar garnish 98 is pushed away from the inner panel 90a by this expansion pressure. The CSA 80 is deployed from the gap formed between the A pillar garnish 98 and the inner panel 90a into the vehicle interior and between the occupant and the side door (side glass) to restrain the occupant from the side door side. In FIG. 10, 98 ′ shows a state in which the A pillar garnish 98 is pushed out, and 80 ′ shows a part of the deployed state of the CSA 80. When the CSA 80 is deployed, an oblique tensile force is applied from the CSA 80 to the clip 10 in the pulling direction.

  Next, functions and effects of the clip 10 and the CSA mounting structure 2 will be described.

  First, since the unevenness 36 is provided on the inner side surfaces 34 of the pair of locking claws 30 that face each other, the deformable amount in the direction in which the pair of locking claws 30 approach each other is greater than when the unevenness 36 is not provided. Will be increased. As a result, while allowing the pair of locking claws 30 to be inserted into the clip mounting holes 92, the margin D of the locking claw deformation direction with the edges of the clip mounting holes 92 of the pair of locking claws 30 (FIG. 7). Reference) can be increased, and the bending rigidity of the locking claw 30 itself can be increased. As a result, shaving, crushing deformation and bending deformation of the locking claw 30 in the clip axial direction are suppressed, and the CSA holding force of the clip 10 is increased.

  Further, the locking claw 30 composed of the shaft part 40 and the claw part 50 extends in a direction away from the seat part 24, and the claw part 50 of the pair of locking claws 30 is formed with a protruding part 56 protruding in a direction away from each other. ing. An enlarged inclined surface 52b is formed on a part of the outer surface of the protrusion 56 so that the distance from the clip center axis 10a increases as the distance from the seat 24 increases. Therefore, as compared with the conventional clip in which the distance from the clip center axis is reduced as the outer surface of the locking claw is separated from the seat portion, the protruding portion 56 has a large allowance D with the edge of the clip mounting hole 92. Can have. Moreover, the projecting portion 56 can have a large shear cross-sectional area S (see FIG. 7) in a direction along the clip center axis 10a through the inner surface of the clip mounting hole 92. As a result, when a load is applied to the protrusion 56 from the edge of the clip attachment hole 92, the protrusion 56 can withstand a sufficient shear strength.

Further, since the outer side surface 52 of the claw portion 50 of the locking claw 30 is an enlarged inclined surface 52b that moves away from the clip center axis 10a as it moves away from the seat portion 24, an oblique tensile force is applied to the clip 10 from the CSA 80 in the pulling direction. Even if the clip 10 is inclined, the shear area S (see FIG. 7) of the protrusion 56 is maintained at a large value, and a large CSA holding force is ensured. On the other hand, in the conventional clip in which the locking claw extends from the coupling position with the leg part away from the seat part toward the seat part and the outer side surface is a reduced inclined surface that approaches the clip center axis as it is away from the seat part, When the clip is inclined, there is a problem that the shear cross-sectional area of the claw portion is reduced and the CSA holding force is reduced. However, in the present invention, the problem of the conventional clip is solved.

  Since the protruding portion 56 is formed on the claw portion 50 over the entire width or almost the entire width of the locking claw 30, the locking claw (corresponding to the claw portion 50 in the present invention) has a leg portion (in the locking claw 30 in the present invention). The shear strength of the claw portion 50 and the locking claw 30 in the clip axis direction and the direction orthogonal to the clip axis direction is increased as compared with the conventional clip that is formed only in a part of the width direction. CSA retention is increased.

Further, by inserting the lock pin 60 into the space 38, deformation of the pair of locking claws 30 toward each other is suppressed, and the clip 10 can be attached to the body 90 at the edge of the clip attachment hole 92 and locked. it can.

More specifically, when the pin claw portion 64 is engaged with the temporary holding hole 26, the constant-thickness portion 74 on the tip side of the pin leg portion 66 is not positioned between the pair of claw portions 50. Can fall down and deform. In this state, the pair of locking claws 30 are passed through the hole of the tab 80b of the CSA 80 and the hole of the spacer 82, and then the pair of locking claws 30 are attached to the body 90 while being deformed inwardly. Push into the clip mounting hole 92. After the pair of locking claws 30 are inserted through the clip mounting holes 92 of the body 90 and returned to their original positions where they are not tilted inward due to elastic deformation, the lock pins are moved to the positions where the pin claws 64 are engaged with the main holding holes 28. Push 60 in. In this state, since the constant thickness portion 74 at the tip end side of the pin leg portion 66 is located between the pair of claws 50 (FIGS. 9 and 6), the pair of locking claws 30 are inwardly deformed and the clip 10 cannot be deformed. It is locked at the edge of the 90 clip mounting holes 92 so that it cannot be removed.

  When the lock pin 60 is inserted into the space 38 until the pin claw portion 64 engages with the main holding hole 28, the convex portion 70 a of the concave and convex portion 70 of the lock pin 60 is formed on the shaft portion 40 of the locking claw 30. Since it penetrates into the recessed part 36b made, the recessed part 36b of the axial part 40 is substantially filled (FIG. 8, FIG. 6). As a result, even if the shaft portion 40 of the locking claw 30 of the clip 10 receives a shearing force from the edge of the clip mounting hole 92 in the direction orthogonal to the clip center axis 10a, the deformation of the clip 10 is suppressed and the CSA holding of the clip 10 is maintained. Power is increased.

  Further, according to the CSA attachment structure 2 according to the present invention, since the CSA 80 is attached to the body 90 of the vehicle using the clip 10 having a high strength, the CSA attachment structure 2 with improved holding strength of the CSA 80 can be provided.

2 CSA mounting structure 10 Clip 10a Clip center axis 20 Clip main body 24 Seat part 30 Locking claw 34 Inner side surface 36 Concavity and convexity 36a Convex part 36b Concave part 38 Space part 40 Shaft part 50 Claw part 52 Outer side face 52b Enlarged inclined surface 56 Projection part 60 Lock pin
66 Pin leg part 68 Side 70 Uneven part 70a Convex part
72 Root side constant thickness part
74 Tip side constant thickness part 80 CSA
90 Body 92 Clip mounting hole D

Claims (7)

With clip body,
The clip body includes a pair of locking claws that can be deformed in a direction approaching each other,
The pair of locking claws have inner surfaces facing each other,
Concavities and convexities are provided on at least a part of the inner side surfaces of the pair of engaging claws, and the unevenness provided on each engaging pawl has a plurality of convex portions and a plurality of concave portions extending in the clip axis direction. Shaped irregularities,
Wherein the concavo-convex of the concavo-convex and the other locking pawl of the one locking pawl, the projections of the one engaging pawl and the recess of the other locking pawl is opposed convex of the other locking pawl Are shifted alternately so that the portion and the concave portion of the one locking claw are opposed to each other,
When the pair of locking claws are tilted inward so as to approach each other, the convex portion of the one locking claw is received in the concave portion of the other locking claw, and the convex portion of the other locking claw is A clip that is received in the recess of the locking claw . The clip body has a seat;
The pair of locking claws include a shaft portion coupled to the seat portion and extending in a direction away from the seat portion, and a claw portion connected to the shaft portion and extending in a direction away from the seat portion,
The clip according to claim 1, wherein protrusions protruding in directions away from each other are formed on the claw portions of the pair of locking claws.   The clip according to claim 2, wherein the protrusion is formed on the claw portion over the entire width or substantially the entire width of the locking claw. The clip includes a lock pin, the lock pin having a side surface;
A space is provided between the inner surfaces of the pair of locking claws, and the lock pin can be inserted into the space,
When the lock pin is inserted into the space, the front end surface of the convex portion on the inner surface of the pair of locking claws abuts on the side surface of the lock pin and the pair of locking claws are deformed in a direction approaching each other. The clip according to any one of claims 1 to 3, wherein the suppression is suppressed. The unevenness is formed on at least a part of the shaft part and at least a part of the claw part of the pair of locking claws,
A portion of the lock pin corresponding to the shaft portion of the locking claw protrudes into the recess formed in the shaft portion of the locking claw when the lock pin is inserted into the space portion. The clip of Claim 4 in which the uneven | corrugated | grooved part which has a part is formed. The rock n pin has a pin leg, the pin leg has a constant thickness portion on the base side, a concavo-convex portion including a convex portion and a concave portion extending in the clip axis direction, and a constant thickness portion on the tip side thinner than the constant thickness portion on the root side. And
When the lock pin is inserted into the space portion, the tip surfaces of the convex portions on the inner side surfaces of the pair of locking claws are in contact with the side surfaces of the constant thickness portion on the tip side and the pair of locking claws approach each other. The clip according to claim 4, wherein the protrusion of the lock pin protrudes into the recess of the inner surface of the locking claw and fills the recess at a portion corresponding to the claw of the locking claw. . A curtain airbag mounting structure in which a curtain airbag is mounted on a vehicle body using the clip according to any one of claims 1 to 6 .

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