JP5776592B2 - Clip and pillar garnish or curtain airbag mounting device using the clip - Google Patents

Description

The present invention relates to a clip comprising a tether clip or a curtain airbag mounting clip, and a pillar garnish or curtain airbag mounting apparatus for mounting a pillar garnish or curtain airbag on a vehicle body using the clip. The main part of the clip and the pillar garnish or curtain airbag attachment device are the same.
Hereinafter, a tether clip and a pillar garnish attachment device will be described as an example, but this description is also applicable to a curtain airbag attachment clip and a curtain airbag attachment device.

  Patent Document 1 discloses a tether clip that attaches a pillar garnish containing a curtain airbag to an A pillar and prevents the scattering of the pillar garnish when the curtain airbag is deployed. The tether clip includes a tether portion that engages with the pillar garnish when the pillar garnish is opened halfway during deployment of the curtain airbag, and restricts further opening of the pillar garnish, and a tether clip that locks the tether clip to the body panel. A body attaching portion having a pawl.

  Further, Patent Document 2 integrally forms an unlocking operation portion protruding outward at the tip of a locking claw that is defined by a slit in a hollow box-shaped body mounting portion. Discloses another type of tether clip that improves the removability of the pillar garnish.

  If the operation part for unlocking of Patent Document 2 is provided at the tip of the locking claw of the tether clip of Patent Document 1, it differs from the present invention in some drawings (FIGS. 1 to 7) of the present invention. A comparative tether clip is obtained, in which the shape of the part is indicated with the symbol C. The comparative tether clip is used for comparative study when developing the tether clip of the present invention, and is not conventionally known.

As shown in FIGS. 4 to 7 and 9, the comparative tether clip 100 includes the body mounting portion 12.
0 and a locking claw 130 which is coupled to the body mounting portion at one end in the longitudinal direction and is separated from the body mounting portion by the slit 124 except at one end in the longitudinal direction. As shown in FIG. 5, the locking claw 130 has a claw main portion 132 and an inclined surface 134, and an inclination starting point 134 a of the inclined surface is a position separated by a dimension B from the slit end 124 a toward the claw main portion 132. The locking claw 130 has a constant thickness A from the slit end 124a to the starting point 134a of the inclined surface. Further, as shown in FIG. 7, the shape of the end portion of the slit 124 is two sides 124b and 124c extending in the axial direction of the body attachment portion at an interval, and an orthogonal side 124d extending linearly in a direction perpendicular to the two sides. And has a shape having a corner 124e at the intersection of the two sides and the orthogonal side.

JP 2007-098986 A

JP 2011-133014 A

The comparative tether clip 100 and the tether clips of Patent Documents 1 and 2 have room for improvement in the following points.
The resistance of the tether clip 100 against the shear load applied from the body panel to the locking claw 130 of the tether clip 100 as a reaction force of the removal load (F shown in FIG. 11) acting on the tether clip 100 from the pillar garnish when the curtain airbag is deployed. That is, the removal resistance of the tether clip 100 is low. This is because the base thickness dimension A of the locking claw 130 is small and the longitudinal dimension B of the constant thickness portion of the locking claw 130 is large. In that case, when an extraction load is applied to the locking claw 130, bending and buckling deformation occurs at the base of the locking claw 130, as shown in FIG. The shear surface length Sc of the portion 132 is reduced, and the removal resistance is not increased.

  In order to increase the removal resistance of the tether clip 100, the thickness A of the base of the locking claw 130 must be increased. In this case, since the position of the outer surface of the base of the locking claw 130 is regulated from the inner diameter of the clip mounting hole 82, the position of the inner surface 138 of the base of the locking claw 130 has to be moved inward. However, when the position of the inner surface 138 of the locking claw 130 is moved inward, the amount of interference between the inner surfaces of the locking release operation portion 140 increases, and the load when being pushed by the edge of the clip mounting hole 82 increases. The clip insertion load into the clip attachment hole of the body panel and the clip removal load from the clip attachment hole are as shown by broken lines in FIG. Therefore, it is not easy to increase the removal resistance.

  The objective of this invention is providing the pillar garnish or curtain airbag attachment apparatus which attached the pillar garnish or the curtain airbag to the body using the clip which raised the extraction resistance.

  A sub-object of the present invention is a clip in which the removal resistance of the clip is increased without increasing the insertion load and removal load of the clip, and the pillar garnish or curtain in which the pillar garnish or curtain airbag is attached to the body using the clip. The object is to provide an airbag mounting device.

(1) clip of the present invention for solving the above-mentioned problems, and the body attachment part, a locking claw, a body mounting portion extends in the axial direction of the body attachment part, the locking claw is body mounting The body has a longitudinal direction parallel to the axial direction of the portion, and has a joint portion with the body attachment portion at one end in the longitudinal direction , and is separated from the body attachment portion by a slit except for the joint portion .
Locking claw is provided a claw main portion projecting radially outward of the body mounting portion than the outer surface of the body mounting portion at a site halfway formed latching claws longitudinally integral claw, integrally with the engaging claw and it is locking claws in the longitudinal direction of the coupling portion and extends from the end opposite radially outwardly of the body attachment part unlocking operation unit has a claw main section, the axis of the body attachment part An outer surface extending in parallel with the direction, a plane connected to an end opposite to the coupling portion of the outer surface and extending in a direction perpendicular to the axial direction of the body mounting portion, and inclined with respect to the axial direction of the body mounting portion from the outer surface And an inclined surface extending linearly between the starting point of the inclination on the coupling portion side and the end portion on the coupling portion side of the outer surface ,
Body mounting portion axial position of the origin of the inclination of the inclined surface and the body attachment part axial position of the coupling portion side end of the slits are substantially coincident with each other in the body mounting portion axial direction.
Inclined plane has signed a binding outer surface in the same body attachment part axial position as the coupling portion side end of the end portion and the slit of the coupling portion of the pawl main portion outer surface.
In this case, it is only necessary that the starting point of the inclination and the end of the slit substantially coincide with each other at the end of the locking claw in the width direction in the body attaching portion axial direction. In addition, “substantially coincidence” means that a deviation to the width dimension of the slit, preferably half the slit width, is allowed in the axial direction of the body attachment portion.

(2) In the clip of (1) above, the axial end of the body attachment portion of the slit has a semicircular shape when viewed from the front of the slit, and the end of the slit is attached to the semicircular body on the semicircle It is a partial axial direction end point.

“Semi-circle” means “a substantially semi-circular shape, for example, a semi-oval, an ellipse, a shape in which a straight line extending in a direction perpendicular to the body attachment portion axial direction is connected to a straight line extending in the body attachment portion axial direction with a curve that cannot be regarded as a corner, Etc. "

( 3 ) In the clip of (1) or ( 2 ) above,
The starting point of the inclined surface of the inclined surface is separated from the end of the slit by the distance B from the end of the slit, and has a locking claw having a constant thickness A from the end of the slit to the starting point of the inclined surface of the inclined surface. Compared to the comparison clip that has the same structure as the above clip except for having a corner,
The inner surface position of the locking claw at the starting point of the inclination of the inclined surface of the clip, the inner surface position of the locking claw at a position separated from the end of the slit of the clip by the distance B, and the relationship at the starting point of the inclination of the inclined surface of the clip The inner surface position of the locking claw at the position of the slit of the comparison clip, the inner surface position of the locking claw at a position separated by a distance B from the edge of the comparison clip, and the comparison clip While being made equal to the thickness dimension A of the locking claw at the end position of the slit,
The thickness dimension T of the locking claw at a position separated from the end of the slit of the clip by the distance B is made larger than the thickness dimension A of the locking claw at a position separated from the end of the slit of the comparison clip by the distance B. .
Here, “the position of the inner surface of the locking claw” is “the distance of the inner surface of the locking claw from the axis of the body mounting portion”.

( 4 ) In any one of the clips (1) to ( 3 ) above,
The clip is a tether clip or curtain airbag mounting clip.

( 5 ) The pillar garnish or curtain airbag mounting device of the present invention that solves the above-described problems is a body panel having a clip mounting hole, a curtain airbag, a pillar garnish, and a pillar garnish or curtain airbag. Any one of the above-mentioned (1) to ( 4 ) clips used for attaching to the body panel at the attachment hole portion.

  According to the clip of (1) above, since the position of the inclination starting point of the inclined surface is substantially coincided with the position of the slit end in the axial direction of the body mounting portion, the locking is performed at a position separated from the end of the slit by the distance B. The claw thickness T is thicker than the claw thickness A at a distance B from the slit end of the comparison clip, improving the bending rigidity and buckling resistance of the claw root. To do. As a result, when a compressive shearing load is applied in the axial direction of the body mounting portion from the edge of the clip mounting hole of the body panel to the locking claw of the clip when the curtain airbag is deployed, bending deformation and seating at the base of the locking claw Bending and the inclination of the nail main part by them are suppressed. As a result, the shearing surface length Sp at the claw main part becomes larger than the shearing surface length Sc of the comparative clip, and the removal resistance of the clip is increased.

  In addition, according to the clip of (1) above, since the position of the starting point of the inclined surface of the inclined surface moves to the position of the end of the slit, the bending point of the locking claw becomes farther from the locking release operation portion than the comparative clip. When the dimension between the outer surfaces of the claw main portions of the locking claw is the same as the diameter of the clip mounting hole of the body, the amount of interference between the inner surfaces of the pair of locking release operation portions is reduced. Further, the span between the inner surface of the locking release operation portion and the bending point of the locking claw is increased. Furthermore, the angle of the inclined surface of the locking claw becomes gentle. As a result, the insertion / removal load of the clip into the clip mounting hole of the body panel is reduced, and the insertion property and the removal property at the time of service are improved.

In addition, according to the clip of (1) above, since the claw main portion has the outer surface (32a in FIG. 6) extending in the axial direction of the body attachment portion, the claw main portion upper surface directly without the inclined surface passing through the claw main portion outer surface. Compared with the case where it connects to, the shearing surface length Sp of a nail | claw main part becomes long, and anti-extraction force is increased.
In addition, since the claw main part has a plane perpendicular to the body mounting part axial direction on the opposite side of the inclined surface and the body mounting part axial direction, the corner of the clip mounting hole edge of the body panel is inclined to the top surface of the claw main part. The lower surface of the edge of the clip mounting hole bites into the surface (32c in FIG. 6) and comes into contact with the axis orthogonal plane (32b in FIG. 6) and receives the extraction load on the axis orthogonal plane (32b in FIG. 6). After that time, the removal resistance of the clip is stabilized. If there is no plane perpendicular to the axis (32b in FIG. 6) and the entire upper surface of the claw main body is formed of a slope, the radial direction of the body mounting portion is applied to the slope (32c in FIG. 6) when an axial removal load is applied. Since a component force directed inward is generated and the main nail portion is bent inward in the body attachment portion radial direction, the shear surface approaches the outer end of the main nail portion, and the shear surface length Sp of the main nail portion (FIG. 8) There is a possibility that the removal resistance of the clip will be reduced. However, since the nail main portion has an axis orthogonal to the plane (32b in FIG. 6), the drop resistance is not reduced or suppressed.

  According to the clip of (2) above, since the end shape of the slit is almost semicircular when viewed from the front of the slit, the notch effect is hardly generated at the slit end when a load is applied to the clip. When the slit end shape has a corner, stress may concentrate on the corner and a crack may be generated from the corner. However, since the slit end is almost semicircular, the crack generation is suppressed. Further, the width at the slit end of the locking claw is increased by a substantially semicircular diameter, the strength of the locking claw root is improved, and the breaking at the locking claw root is suppressed.

According to the clip of ( 3 ), it is not necessary to shift the position of the inner surface (38 in FIG. 5) of the locking claw inward in order to increase the thickness and rigidity of the base portion of the locking claw. As a result, the amount of interference between the inner surfaces of the pair of unlocking operation portions does not increase, and the insertion load of the clip into the clip mounting hole of the body does not increase.

According to the clip of ( 4 ) above, since the clip is a tether clip or a curtain airbag mounting clip, when the extraction force is applied to the tether clip or the curtain airbag mounting clip when the curtain airbag is deployed, the clip can withstand this extraction force. Thus, scattering of the pillar garnish or detachment of the curtain airbag can be prevented.

According to the pillar garnish or curtain airbag mounting device of ( 5 ) above,
1)-( 4 ) clip is used, so the clip detachment force can be increased more than the pillar garnish or curtain airbag mounting device using the comparison clip, and the scattering of the pillar garnish when deploying the curtain airbag Alternatively, the curtain airbag can be prevented from coming off. Further, it is not necessary to change the structure of the pillar garnish that houses the body panel, the clip mounting hole, and the curtain airbag.

It is the perspective view which combined and showed the different part of the comparison tether clip of the tether clip concerning one Example of this invention. FIG. 2 is a view taken in the direction of arrow X in FIG. It is a Y arrow line view of FIG. FIG. 4 is an external view of the different portions of the tether clip and the comparative tether clip of FIG. 1, showing the unlocking state of the locking claws, and removing the cross-sectional hatching at the cross-sectional portion along line 4-4 of FIG. 1. FIG. 5 is a partially enlarged view of FIG. 4. FIG. 4 is a cross-sectional view taken along line 4-4 of FIG. 1, also showing the unlocked state of the locking claw of the difference between the tether clip and the comparative tether clip of FIG. FIG. 2 is an enlarged front view of an end of a slit and a vicinity thereof, showing different portions of a comparative tether clip of the tether clip of FIG. 1. It is sectional drawing of the tether clip of FIG. 6 which shows the schematic image of a deformation | transformation of the latching claw when the extraction load is applied to the tether clip. It is sectional drawing of a comparison tether clip which shows the general | schematic image of a deformation | transformation of the latching claw of a comparison tether clip when a removal load is applied to a tether clip. 2 is a graph of insertion load versus insertion amount for the tether clip and comparative tether clip of FIG. It is sectional drawing of the pillar garnish attachment apparatus which attached the pillar garnish which accommodated the curtain airbag to the body panel using the tether clip of FIG.

The clip 10 which consists of a tether clip or a curtain airbag mounting clip according to the embodiment of the present invention and the pillar garnish or curtain airbag mounting device 60 according to the embodiment of the present invention using the clip 10 are attached to the tether clip 10 and the pillar garnish. The apparatus 60 will be described as an example with reference to FIGS.
1 to 10 show a tether clip 10, and FIG. 11 shows a pillar garnish attachment device 60 that uses the tether clip 10 to attach a pillar garnish 70 to a vehicle body panel 80.

<< Structure >>
[Tether clip]
First, the structure of the tether clip 10 will be described.
The tether clip 10 is made of a flexible resin. Flexible resins include polyhexamethylene adipamide, polyamide, and the like. However, it is not limited to polyhexamethylene adipamide or polyamide as long as it is a flexible resin.

As shown in FIGS. 1 to 3, the tether clip 10 includes a body attachment portion 20 and a locking claw 30 formed at the body attachment portion 20 site. The tether clip 10 may further include a seat portion 50, a tether portion 52, an anchor portion 54, and engagement holding portions 56 provided on both sides of the tether portion 52. The body attachment portion 20 extends from the seat portion 50 in a direction orthogonal to or substantially orthogonal to the seat portion 50, and the tether portion 52, the anchor portion 54, and the engagement holding portion 56 are connected to the body attachment portion 20 from the seat portion 50. Extends to the opposite side. The body mounting portion 20 has a locking claw 30.
A flange portion 42 extending radially outward from the body mounting portion 20 and having flexibility in the axial direction of the body mounting portion may be provided in a portion between the seat portion 50 and the seat portion 50.

Of the pillar garnish attachment device 60, the portions necessary for the description of the tether clip 10 will be schematically described in advance. Details will be described in a pillar garnish mounting device 60 described later.
As shown in FIG. 11, the tether clip 10 is attached to the vehicle body panel 80 at the body attachment portion 20 site. The tether clip 10 inserts the body attachment portion 20 into a clip attachment hole 82 provided in the body panel 80 and sandwiches the edge of the clip attachment hole 82 between the flange portion 42 and the locking claw 30, whereby the body panel 80. Mounted on. Further, the tether clip 10 has a pillar garnish by sandwiching an edge of a rectangular locking hole 76a formed in the bottom wall portion 76 of the tether storage portion 74 of the pillar garnish 70 by the engagement holding portion 56 and the seat portion 50. 70 is engaged. When the curtain airbag 90 is deployed, the pillar garnish 70 is pushed by the curtain airbag 90 and opens away from the body panel 80. When the pillar garnish 70 is partially opened, the anchor portion 54 engages with the edge of the locking hole 76a of the pillar garnish 70, and the pillar garnish 70 is prevented from further opening, and the scattering of the pillar garnish 70 is restricted. The

  As shown in FIGS. 1 to 6, the body mounting portion 20 of the tether clip 10 is formed of a hollow body having an outer surface 22. The body attachment portion 20 has an axial direction that is a direction in which the axis of the body attachment portion 20 extends.

One or more locking claws 30 are provided on the body mounting portion 20. In the illustrated example, a case is shown in which a pair of locking claws 30 are provided on the body mounting portion 20 with the axis of the body mounting portion 20 interposed therebetween.
The locking claw 30 has a longitudinal direction parallel to the axial direction of the body mounting portion 22. The locking claw 30 is coupled to the body mounting portion 20 at one end in the longitudinal direction of the locking claw, and is separated from the body mounting portion 20 by the slit 24 except for one end in the longitudinal direction. In the posture in which the body mounting portion 20 is directed vertically and the seat portion 50 is disposed on the upper side of the body mounting portion 20, the slit 24 has an inverted U shape. The two lower ends of the slit 24 when arranged in an inverted U shape constitute an end 24 a of the slit 24.

  The locking claw 30 includes an inclined surface 34, a claw main portion 32, an extended surface 36, a locking release operation unit 40, from the slit end 24 a toward the seat 50 in the longitudinal direction of the locking claw, And has an inner surface 38 inside. Each part will be described in detail below.

  The claw main portion 32 is formed integrally with the locking claw 30 and protrudes outward in the radial direction of the body mounting portion 20 from the outer surface 22 of the body mounting portion 20 at a midway position in the locking claw longitudinal direction. The claw main portion 32 includes an outer surface 32a extending in the axial direction of the body attaching portion 22, a plane 32b connected to the outer surface 32a and extending in a direction perpendicular to the axial direction of the body attaching portion 22, and a plane 32b connected to the plane 32b. The connecting surface 32c is inclined and extends between the installation surface 36 and the installation surface 36. The outer surface 32 a is located radially outward from the inner diameter of the clip mounting hole 82, and extends in the circumferential direction while forming an arc around the axis of the body mounting portion 20.

  The inclined surface 34 is formed integrally with the locking claw 30 and extends between the inclined starting point 34a located on one end side in the locking claw longitudinal direction from the claw main portion 32 and the claw main portion 32. It is inclined with respect to the axial direction. The direction of inclination of the inclined surface 34 is a direction in which the distance from the axis of the body mounting portion 20 increases in the radial direction of the body mounting portion 20 from the starting point 34 a of the inclination toward the claw main portion 32. The inclined surface 34 extends in the circumferential direction while forming an arc around the axis of the body mounting portion 20.

  The extending surface 36 extends in the axial direction of the body mounting portion 22, and extends in the circumferential direction while forming an arc around the axis of the body mounting portion 20. When the tether clip 10 is mounted on the body panel 80, the extended surface 36 faces the inner surface of the edge of the clip mounting hole 82 in the body mounting portion radial direction.

  The unlocking operation unit 40 is provided integrally with the latching claw 30, and the body from the other end in the longitudinal direction of the latching claw (an end on the opposite side of the coupling claw 30 to the body mounting portion 20). The mounting portion extends outward in the radial direction. The unlocking operation part 40 extends to a position farther from the axis of the body attaching part 22 than the outer surface 32 a of the claw main part 32. The unlocking operation unit 40 is operated when the tether clip 10 is removed from the body panel 80 during service. The claw main part 32 is displaced to the axis side of the body mounting part 22 by pushing the locking release operating part 40 toward the axis side of the body mounting part 22, and the outer surface 32 a of the claw main part 32 is moved to the radius of the clip mounting hole 82. The claw main portion 32 is allowed to be inserted through the clip mounting hole 82 by being displaced further toward the inner diameter side.

The position of the inclination starting point 34a of the inclined surface 34 and the position of the end 24a of the slit 24 on one end side in the locking claw longitudinal direction substantially coincide with each other in the body attachment portion axial direction.
In this case, the inclination starting point 34a and the end 24a of the slit 24 at the end in the width direction of the locking claw 30 only need to be substantially coincident with each other in the axial direction of the body attaching portion. Since the outer surface of the inclined surface 34 is an arc surface extending in the circumferential direction centering on the axis of the body attaching portion 20, the starting point 34 a of the inclination draws an arc in the axial direction of the body attaching portion. It is only necessary that the position of the inclination starting point 34a of the inclined surface 34 at the end of the direction substantially coincides with the position of the end 24a of the slit 24 in the axial direction of the body attaching portion.
In addition, “substantially coincidence” is assumed to allow an axial displacement of the body attachment portion about the width dimension of the slit 24. This is because the tether clip 10 is manufactured by molding, so that it is difficult to obtain a highly accurate dimension.

  As shown in FIG. 7, the end portion in the axial direction of the body mounting portion of the slit 24 is a semicircular shape that extends in a semicircular shape when viewed from the front of the slit between two sides 24b and 24c extending in the axial direction of the body mounting portion of the slit 24. It has a part 24d. The end 24a of the slit 24 is an end point in the axial direction of the body attachment portion of the semicircular portion 24d. The “semicircle” of the semicircular portion 24d includes “substantially semicircular”, for example, a semi-oval and an ellipse.

  The tether clip 10 of the present invention has the following structure with respect to the comparative tether clip 100 described above. However, in the comparative tether clip 100, the inclination starting point 134a of the inclined surface 134 is separated from the slit end 124a by the distance B toward the claw main portion 132, and the dimension A is from the slit end 124a to the inclination starting point 134a of the inclined surface. The tether clip 10 has the same structure as or substantially the same structure as the tether clip 10 of the present invention except that the claw 130 has a constant thickness and the slit end 124a has a corner 124e.

In the tether clip 10 of the present invention, the body attachment portion axial position of the slit end 24 a remains the same as the body attachment portion axial position of the slit end 124 a of the comparative tether clip 100.
In this state, the body attachment portion axial position of the inclination starting point 34a of the inclined surface 34 is in the body attachment portion axial direction until the position substantially coincides with the body attachment portion axial position of the slit 124a of the comparative tether clip 100. Has been moved.

In the tether clip 10 of the present invention, the inclination starting point 134a of the comparative tether clip 100 is moved to the slit end 124a in the axial direction of the body mounting portion 120, so that the position of the inclination starting point 34a of the inclined surface 34 and the locking claw The position of the end 24a of the slit 24 on one end side in the longitudinal direction is substantially coincided with each other in the body attachment portion axial direction. That is, the slit end 124 a is not moved to the starting point 134 a inclined in the axial direction of the body mounting portion 120.
Thereby, the body mounting portion axial length of the inclined surface 34 of the tether clip 10 of the present invention is longer than the axial length of the body mounting portion axial direction of the inclined surface 134 of the comparative tether clip 100, and the inclination of the tether clip 10 of the present invention is inclined. The slope of the surface 34 becomes gentler than the slope of the sloped surface 134 of the comparative tether clip 100.

  Further, in the tether clip 10 of the present invention, the position of the inner surface 38 of the locking claw 30 at the inclination starting point 34 a of the inclined surface 34 of the tether clip 10, and the position separated from the slit end 24 a of the tether clip 10 by the distance B. The position of the inner surface 38 of the locking claw 30 and the thickness dimension of the locking claw 30 at the inclination starting point 34a of the inclined surface 34 of the tether clip 10 are respectively related to the slit end position 124a of the comparative tether clip 100. The position of the inner surface 124a of the pawl 130, the position of the inner surface 138 of the locking claw 130 at a position separated from the slit end 124a of the comparative tether clip 100 by a distance B, and the slit end position 124a of the comparative tether clip 100 It is kept equal to the thickness dimension A of the locking claw 130.

  In this state, the thickness dimension T of the locking claw 30 at a position separated from the slit end 24a of the tether clip 10 of the present invention by the distance B is a position separated from the slit end 124a of the comparative tether clip 100 by the distance B. The thickness c is larger than the thickness dimension A of the locking claw 130.

  Next, the parts of the tether clip 10 other than the body mounting portion 20 and the locking claw 30, that is, the seat portion 50, the tether portion 52, the anchor portion 54, and the engagement holding portion 56 provided on both sides of the tether portion 52 are structured. explain.

As shown in FIGS. 1-3, the seat part 50 consists of a substantially rectangular flat plate with thickness.
At least a part of the upper side of the inverted U shape of the slit 24 may be hung on the lower surface of the seat portion 50.
The tether portion 52 and the engagement holding portion 56 extend from the seat portion 50 to the side opposite to the body attaching portion 20.

  As shown in FIG. 1 to FIG. 3 and FIG. 11, the tether portion 52 is connected to a linear portion 52 a rising from the seat portion 50 and extending linearly, and an end portion of the linear portion 52 a opposite to the seat portion 50. And a bending portion 52b that bends. However, the linear portion 52a may be omitted and the curved portion 52b may rise directly from the seat portion 50. The cross section of the straight portion 52a and the curved portion 52b, which is cut in a direction perpendicular to the longitudinal direction of the tether portion 52, is rectangular. The bending direction of the bending portion 52b is directed in a direction orthogonal to the longitudinal direction of the pillar garnish 70 in FIG. 11, but may be directed in the longitudinal direction of the pillar garnish 70. Hereinafter, the case where the pillar garnish 70 is directed in the direction orthogonal to the longitudinal direction will be described.

  As shown in FIG. 1 to FIG. 3 and FIG. 11, the anchor portion 54 is connected to the end portion of the tether portion 52 opposite to the seat portion 50. The anchor portion 54 has a shape similar to a ginkgo leaf that gradually expands from an end portion connected to the tether portion 52 toward an opposite end portion. The anchor portion 54 has a rectangular cross section. The long side of the rectangular cross section of the anchor portion 54 is shorter than the long side of the rectangular locking hole 76 a of the pillar garnish 70 and is longer than the short side, and the short side of the cross section of the anchor portion 54 is the rectangular shape of the pillar garnish 70. It is shorter than the short side of the locking hole 76a.

The anchor portion 54 is inserted through the locking hole 76a so that the longitudinal direction of the cross-section is aligned with the direction in which the long side of the locking hole 76a extends, and rotated 90 degrees after passing through the locking hole 76a. 74. When the curtain airbag 90 is deployed, when the pulling force F (FIG. 11) is received from the pillar garnish 70, the tether portion 52 extends so as to approach a straight line, and the pillar garnish 70 opens. When the pillar garnish 70 is opened halfway, the anchor portion 54 engages with the edge of the locking hole 76a, and further opening of the pillar garnish 70 is prevented, and the pillar garnish 70 is prevented from scattering.

  As shown in FIGS. 1 to 3, a pair of engagement holding portions 56 are provided, one on each side of the tether portion 52. The engagement holding portion 56 has a rising portion 56a that rises from the seat portion 50 on the same side as the tether portion 52, and a bulging portion 56b that is connected to the rising portion 56a and bulges in a direction perpendicular to the rising direction of the rising portion 56a. .

  The bulging portion 56b can be elastically deformed in a direction orthogonal to the rising direction of the rising portion 56a. When the bulging portion 56b is inserted into the locking hole 76a of the pillar garnish 70 and stored in the storage portion 74, the bulging portion 56b is pushed back from the edge of the locking hole 76a and is retracted to pass through the locking hole 76a. After the insertion, the bulging portion 56b is elastically returned to the original bulging position, the edge of the locking hole 76a is sandwiched between the bulging portion 56b and the seat portion 50, and the tether clip 10 engages the pillar garnish 70. Hold. In this state, when the curtain airbag 90 is deployed, when the pulling force F (FIG. 11) is received from the pillar garnish 70, the edge of the locking hole 76a elastically deforms the bulging portion 56b, thereby causing the bulging portion 56b portion to move. The pillar garnish 70 is opened until the anchor portion 54 is engaged with the edge of the locking hole 76a. In this state, the pillar garnish 70 is half-opened, and the curtain airbag 90 is deployed in the vehicle interior through the gap between the pillar garnish 70 and the body panel 80. In FIG. 11, the half-open pillar garnish 70 and the deployed curtain airbag 90 are indicated by a two-dot chain line.

[Pillar garnish mounting device]
Next, the structure of the pillar garnish attachment device 60 will be described.
The pillar garnish attachment device 60 attaches the body panel 80 having the clip attachment hole 82, the pillar garnish 70 that houses the curtain airbag 90, and the pillar garnish 70 to the body panel 80 at the clip attachment hole 82 portion of the body panel 80. And the tether clip 10 used for the above.

  The body panel 80 is a front pillar panel of the vehicle. The front pillar panel 80 includes an inner panel 80a, a reinforcement 80b, and an outer panel 80c. A clip mounting hole 82 is formed in the inner panel 80a. The pillar garnish 70 is attached to the inner panel 80a by the tether clip 10 at the clip attachment hole 82 site.

  The curtain airbag 90 is made of cloth, and is disposed between the pillar garnish 70 and the body panel 80 in a folded state. The curtain airbag 90 is attached to the body panel 80 by a normal clip provided at a portion different from the tether clip 10 at the tab portion. The curtain airbag 90 is attached to the body panel 80 by a normal clip before the pillar garnish 70 is attached to the body panel 80 by the tether clip 10.

  The pillar garnish 70 includes a garnish main body 72 and a tether storage portion 74 formed on at least one part in the longitudinal direction of the pillar garnish on the back side thereof. The tether storage part 74 has a bottom wall part 76, and a rectangular locking hole 76 a is formed in the bottom wall part 76. In FIG. 11, the long side of the locking hole 76a is oriented in the pillar garnish longitudinal direction. The pillar garnish 70 is held by the tether clip 10 by the edge portion of the locking hole 76 a being sandwiched between the seat portion 50 of the tether clip 10 and the engagement holding portion 56.

The pillar garnish 70 is attached to the body panel 80 by inserting the body attachment portion 20 of the tether clip 10 into the clip attachment hole 82 of the body panel 80 with the tether clip 10 pre-engaged with the pillar garnish 70. . Locking claw 30 at the time of insertion
Is pushed at the edge of the clip mounting hole 82, the locking claw 30 bends radially inward of the body mounting portion 20 and can be inserted through the clip mounting hole 82 site. After insertion, the locking claw 30 returns to its original position by elasticity. When the attachment is completed, the edge of the clip attachment hole 82 is sandwiched between the flange portion 42 and the locking claw 30. Since the flange portion 42 is flexible in the body attachment portion axial direction, the gap (backlash) between the edge portion of the clip attachment hole 82 and the locking claw 30 is absorbed.

  When it becomes necessary to remove the pillar garnish 70 from the body panel 80 at the time of service or the like, the pillar garnish 70 is pulled away from the body panel 80. At this time, the locking hole 76a of the bottom wall portion 76 elastically displaces the bulging portion 56b of the engagement holding portion 56 inward and passes through the bulging portion 56b, and the anchor portion 54 locks the bottom wall portion 76. The pillar garnish 70 is moved until it engages with the hole 76a and stops. In this state, since there is a gap between the pillar garnish 70 and the body panel 80, a hand or a jig is inserted through the gap, and the pair of unlocking operation portions 40 are sandwiched between fingers or jigs to perform the unlocking operation. The portion 40 is elastically displaced inward. When the inner surfaces of the pair of unlocking operation portions 40 come into contact with each other, the distance between the outer surfaces 32a of the main claws 32 of the pair of locking claws 30 is equal to or smaller than the inner diameter of the clip mounting hole 82. 30 can be inserted through the clip mounting hole 82. In this state, the body attaching portion 20 is pulled out from the body panel 80 through the clip attaching hole 82, and the pillar garnish 70 together with the tether clip 10 is removed from the body panel 80.

  The curtain airbag 90 is deployed by supplying inflation gas from the inflator at the time of vehicle side collision and rollover. When the curtain airbag 90 is deployed, the pillar garnish 70 receives the deployment pressure of the curtain airbag 90 and opens away from the body panel 80. As shown by a two-dot chain line in FIG. 11, when the pillar garnish 70 is opened halfway, the anchor portion 54 engages with the edge of the locking hole 76a to prevent further opening of the pillar garnish 70. The curtain airbag 90 is deployed between the side window glass and the occupant's head through the gap between the pillar garnish 70 and the body panel 80 that are opened halfway, and restrains and protects the occupant's head.

  When the anchor portion 54 is engaged with the pillar garnish 70 when the curtain airbag 90 is deployed, the deployment load of the curtain airbag 90 is applied to the tether clip 10 as an extraction load F (FIG. 11) via the pillar garnish 70. As a reaction force, a compressive shear load is applied to the locking claw 30 of the tether clip 10 from the edge of the clip mounting hole 82 of the body panel 80. Since the pillar garnish 70 which the locking claw 30 shears and breaks is scattered together with the tether clip 10, the tether clip 10 must have an extraction resistance more than the locking claw 30 can withstand the shear load.

<< Action and effect >>
[Tether clip]
First, the operation and effect of the tether clip 10 will be described.
In the tether clip 10 of the present invention, the position of the inclination starting point 34a of the inclined surface 34 is substantially coincided with the position of the end 24a of the slit in the axial direction of the body attachment portion. Therefore, as shown in FIG. 5, the thickness T of the locking claw 30 at a position separated from the slit end 24a by the distance B is equal to the locking position at a position separated from the slit end 124a of the comparative tether clip 100 by the distance B. It becomes thicker than the thickness A of the nail 130. As a result, the bending rigidity and buckling resistance of the base portion of the locking claw 30 are improved.

FIG. 8 shows the combined deformation of the bending and buckling of the base portion of the locking claw 30 of the tether clip 10 when the extraction load is applied, and FIG. 9 shows the locking claw of the comparative tether clip 100 when the extraction load is applied. Fig. 3 shows a combined deformation of 130 root bending and buckling.
As can be seen from the comparison between FIG. 8 and FIG. 9, when the curtain airbag is deployed, a compressive shear load is applied in the axial direction of the body attachment portion from the edge of the clip attachment hole 82 of the body panel 80 to the locking claw 30 of the tether clip 10. When applied, in the present invention, bending deformation and buckling at the base portion of the locking claw 30 and inclination of the claw main portion 32 due to them are suppressed as compared with the comparative tether clip 100. By suppressing the inclination of the claw main portion 32, the shear surface length Sp in the claw main portion 32 becomes larger than the shear surface length Sc of the comparative tether clip. As a result, the removal resistance of the tether clip 10 is increased.
When the extraction load test was performed, it was confirmed that when the extraction load of the comparative tether clip 100 is 100%, the extraction load of the tether clip 10 of the present invention is 122%, and the resistance force is increased by 22%. It was.

  Further, as shown in FIG. 5, the position of the starting point 34a of the inclined surface 34 is moved to the position of the slit end 24a. Therefore, compared to the comparative tether clip 100, the bending point of the locking claw 30 is farther from the inner surface of the locking release operation unit 40. As a result, when the dimension between the outer surfaces of the claw main portion 32 of the locking claw 30 is the same as the diameter of the clip mounting hole 82, the amount of interference between the inner surfaces of the pair of locking release operation portions 40 is reduced. Further, the span between the inner surface of the locking release operation unit 40 and the bending point of the locking claw 32 is increased. Furthermore, the angle of the inclined surface 34 of the locking claw 30 becomes gentle. As a result, as shown in FIG. 10, the insertion load of the tether clip 10 of the present invention into the clip mounting hole 82 is lower than that of the comparative tether clip 100. The removal load of the tether clip 10 also conforms to the insertion load of the tether clip 10.

  In addition, since the end shape of the slit 24 is substantially semicircular when viewed from the front of the slit, the notch effect is unlikely to occur at the end 24a of the slit when an extraction load is applied to the tether clip 10. When the slit end shape has a corner 124e as in the comparative tether clip 100, there is a possibility that a crack may occur from the corner 124e. However, in the tether clip 10 of the present invention, the end shape of the slit 24 is almost semicircular, Crack generation is suppressed. Further, since the width at the slit end 24a of the locking claw 30 is increased by a substantially semicircular diameter, the strength of the base of the locking claw 30 is improved, and this also breaks the base of the locking claw 30. It is suppressed.

  Further, since the claw main portion 32 has an outer surface 32a extending in the body attachment portion axial direction, the claw main body 32 has a claw as compared with the case where the inclined surface 34 is directly connected to the claw main portion upper surface 32b or 32c without passing through the claw main portion outer surface 32a. The main part 32 becomes thicker. Accordingly, the shear surface length Sp of the claw main portion 32 is longer than the shear surface length Sc of the comparative tether clip 100, and the removal resistance of the tether clip 10 of the present invention is increased compared to the comparative tether clip 100. Here, the “shear surface length of the claw main portion” is a surface extending in the axial direction of the body attachment portion passing through the inner surface of the clip attachment hole 82 and between the flat surface 32b of the claw main portion 32 and the inclined surface 134. It is defined as the axial length of the body mounting part. The reason why the flat surface 32b is used instead of the connecting surface 32c is that when the load from the edge of the clip mounting hole 82 is received by the flat surface 32b, the position where the load is applied is stabilized.

  Since the claw main portion 32 has a plane 32b perpendicular to the axial direction of the body attachment portion, the removal resistance is stabilized after receiving the removal load on the axis orthogonal surface 32b. If the axis orthogonal plane 32b is constituted by the inclined surface 32c, when an axial removal load is applied, a component force is generated on the inclined surface 32c inward in the radial direction of the body mounting portion, so that the claw main portion 32 is moved to the body mounting portion radius. Since it is bent inward in the direction, the shear surface approaches the outer end of the claw main portion 32, and the shear surface length Sp of the claw main portion 32 is reduced, which may reduce the removal resistance of the tether clip 10. However, in the nail | claw main part 32 with the axis orthogonal surface 32b, the fall of extraction resistance is suppressed.

When the position of the inclination starting point 34a of the inclined surface 34 and the position of the slit end 24a substantially coincide with the axial direction of the body attaching portion, the position of the inclination starting point 34a of the inclined surface 34 in the axial direction of the body attaching portion is compared. The tether clip 1 of the present invention has been moved in the axial direction of the body mounting portion to the position substantially coincident with the axial position of the body end of the slit 124a of the clip 100.
Thus, the bending rigidity and buckling resistance of the base portion of the locking claw 30 at 0 can be improved, and the removal resistance of the tether clip 10 can be increased, and the insertion and removal loads can be reduced.
On the other hand, when the body attachment portion axial position of the slit end 24a is moved in the body attachment portion axial direction to the body attachment portion axial position of the inclination starting point 134a of the inclined surface 134 of the comparative tether clip 100, The above effect cannot be obtained.

When the position of the inclination starting point 34a is moved so as to approach the slit end 124a, (the length in the axial direction of the body mounting portion of the locking claw 30 from the flat surface 32b of the claw main portion 32 to the slit end 24a) / (engagement) The ratio R of the pawl 30 width) is about 1.9 or more.
On the other hand, when the end 124a of the slit is moved so as to approach the position of the starting point 34a of the inclination, (the length in the axial direction of the body attachment portion of the locking claw 30 from the flat surface 32b of the claw main portion 32 to the slit end 24a) / The ratio R of (the width of the locking claw 30) is about 1.0 to 1.85.
When the position of the starting point 34a of the inclination and the position of the end 124a of the slit are substantially matched, the above-mentioned ratio R is determined to be about 1.9 to determine which of the position of the starting point 34a of the inclination and the position of the end 124a of the slit is moved. One guideline can be above or below.
In addition, the width dimension of the latching claw 30 is a width dimension other than the slit end.

  Further, in order to increase the thickness and rigidity of the base portion of the locking claw 30, the inner surface position of the locking claw 30 is not shifted inward. As a result, the amount of interference between the inner surfaces of the pair of unlocking operation portions 40 does not increase, and the insertion load of the tether clip 10 into the clip attachment hole 82 of the body 80 does not increase compared to the comparative tether clip 100. As the inclined surface 34 becomes longer, as shown in FIG. 10, the maximum value of the insertion load of the tether clip 10 is rather lowered as compared with the comparative tether clip 100.

[Pillar garnish mounting device]
Since the pillar garnish attachment device 60 uses the above-described tether clip 10, the removal resistance of the tether clip 10 can be increased more than the pillar garnish attachment device using the comparative tether clip 100, and the curtain airbag 90 can be deployed. The scattering of the pillar garnish 70 at the time can be suppressed. In addition, by improving the removal resistance of the tether clip 10, the deployment pressure of the curtain airbag 90 can be increased, thereby shortening the deployment time of the curtain airbag 90.
Moreover, it is not necessary to change the structure of the pillar garnish 70 that houses the body panel 80, the clip attachment hole 82, and the curtain airbag 90, and the design of the peripheral structure is not changed.

In the above description, the tether clip 10 is used as the clip 10 and the pillar garnish mounting device 60 is used as the mounting device 60. However, the present invention is not limited to these, and the clip 10 may be a curtain airbag mounting clip. The attachment device 60 may be the curtain airbag attachment device 60.
In the case of the curtain airbag mounting clip, the structure of the body mounting portion 20 of the curtain airbag mounting clip 10 is the same as that of the body mounting portion 20 of the tether clip 10 except that the outer surface shape of the body mounting portion 20 is substantially rectangular. Can be applied mutatis mutandis.
In the case of the curtain airbag attachment device, the clip 10 is attached to the body panel 80 by the curtain airbag 90, but in the case of the tether clip attachment device, the clip 10 is attached to the body panel 80 by the pillar garnish 70. .

DESCRIPTION OF SYMBOLS 10 Tether clip 20 Body attachment part 22 Outer surface 24 Slit 24a Slit end 30 Locking claw 32 Claw main part 32a Outer surface 32b Plane surface 34 orthogonal to body attachment part axial direction Inclined surface 34a Inclined starting point 36 Extension surface of locking claw 38 Inner surface 40 of locking claw Unlocking operation unit 60 Pillar garnish mounting device 70 Pillar garnish 80 Body panel 82 Clip mounting hole 90 Curtain airbag 100 Comparative tether clip

Claims (5)

A body mounting portion and a locking claw;
The body mounting part extends in the axial direction of the body mounting part ,
The locking claw is detached from the body mounting portion by a slit except the coupling portion has a coupling portion between the body mounting portion in the longitudinal direction of the end having parallel longitudinal and axial direction of the body attachment part ,
The locking claw has a claw main portion projecting radially outward of the body mounting portion than the outer surface of the body mounting portion is formed latching claws longitudinally middle portion integrally claw, integrally with the engaging claw and unlocking operating portion extending from the longitudinal direction of the coupling portion of the provided locking claws opposite end radially outwardly of the body attachment part, has a,
The claw main portion includes an outer surface extending in parallel with the axial direction of the body mounting portion, a flat surface connected to an end opposite to the coupling portion of the outer surface and extending in a direction perpendicular to the axial direction of the body mounting portion, An inclined surface that is inclined with respect to the axial direction and extends linearly between a starting point of an inclination on the coupling portion side of the outer surface and an end portion on the coupling portion side of the outer surface ,
A clip,
The body mounting portion axial position of the origin of the inclination of the inclined surface and the body attachment part axial position of the coupling portion side end of the slit are substantially coincident with each other in the body mounting portion axial direction,
The clip in which the inclined surface connects the end portion on the coupling portion side of the outer surface and the coupling portion outer surface at the same body attachment portion axial position as the coupling portion side end of the slit .   The end of the slit in the body mounting portion in the axial direction has a substantially semicircular shape in the front view of the slit, and the end of the slit is the end point in the axial direction of the substantially semicircular body mounting portion on the substantially semicircular shape. The clip according to claim 1. The starting point of the inclined surface of the inclined surface is separated from the end of the slit by the distance B from the end of the slit, and has a locking claw having a constant thickness A from the end of the slit to the starting point of the inclined surface of the inclined surface. Compared to the comparison clip that has the same structure as the clip except for having a corner,
The position of the inner surface of the locking claw at the starting point of the inclination of the inclined surface of the clip, the position of the inner surface of the locking claw at a position separated from the end of the slit of the clip by a distance B, and the inclination of the clip The thickness dimension of the engaging claw at the starting point of the surface inclination is the position of the inner surface of the engaging claw at the end position of the slit of the comparison clip and the position separated from the end of the slit of the comparison clip by the distance B, respectively. While keeping the inner surface position of the pawl and the thickness dimension A of the pawl at the end position of the slit of the comparison clip,
A thickness dimension T of the locking claw at a position spaced from the end of the slit of the clip by a distance B is larger than a thickness dimension A of the locking claw at a position spaced by a distance B from the end of the slit of the comparison clip. The clip according to claim 1 or 2 , wherein the clip is provided. The clip according to any one of claims 1 to 3 , wherein the clip is a tether clip or a curtain airbag mounting clip. A body panel having a clip mounting hole, a curtain airbag, a pillar garnish, and the pillar garnish or the curtain airbag are used to mount the pillar garnish or the curtain airbag to the body panel at a clip mounting hole portion of the body panel. A pillar garnish or a curtain airbag mounting device comprising the clip according to claim 4 .

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