JP2014009746A - Fixture and curtain airbag fixing device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a fixture in which the elastic deformation of a spacer with respect to a reference insertion load of the fixture to a fixture mounting hole of a body can be enlarged in comparison with conventional spacers, and a CSA fixing device.SOLUTION: A fixture 1 comprises: a clip body 10; a lock pin 50; and a spacer 70. The spacer 70 includes an elastic deformation part 76 which is formed from a spacer portion closer to a spacer center of a leg part fitting hole 72 than both ends of the leg part fitting hole 72 in one direction of the spacer to both ends and capable of being deformed in a clip body axial direction. The spacer 70 has a rectangular shape in a planar view, and the one direction of the spacer 70 is e.g., a length direction of the spacer 70. Thus, the elastic deformation of the spacer 70 is increased. In a CSA fixing device 2 employing the fixture 1, the spacer 70 elastically deforms the elastic deformation part 76 to remove backlash among a main body head part 12, a tab 80b, the spacer 70 and a body 90 regardless of variation in distance between the main body head part 12 and the body 90.

Description

  The present invention relates to a fixture having a spacer, and a curtain airbag fixing device using the fixture. Hereinafter, the curtain airbag is also referred to as “CSA”. CSA is an abbreviation for Curtain Shield Airbag.

  Patent Document 1 discloses a fixture having a clip body, a lock pin, and a conventional spacer having an elastic piece elastically deformable in the axial direction of the clip body, and a CSA attached to a vehicle body using the fixture. A CSA fixation device is disclosed.

13 to 15 show a conventional spacer 170 disclosed in Patent Document 1. FIG.
FIG. 10 shows a comparison between the case where the conventional spacer 170 shown by a two-dot chain line is attached to the clip body 10 of the present invention and the case where the conventional spacer 170 is attached to the CSA fixing device 2 of the present invention in comparison with the present invention described later. Show.
FIG. 12 shows a conventional fixture 101 in which the conventional spacer 170 is mounted on the clip body 110 having the same structure as the clip body 10 of the present invention.
The two-dot chain line portion in FIG. 11 shows the insertion load into the body fixing tool mounting hole of the fixing tool 101 having the conventional spacer 170 versus the spacer deformation amount characteristic in comparison with the present invention.

  12-15, the spacer 170 has a substantially rectangular shape in plan view, and the plan view in which the main body leg portion 140 of the rectangular cross section of the clip main body 110 fits in the center of the rectangular shape is almost rectangular. Shaped leg fitting hole 172. The quadrilateral ring at the peripheral edge of the leg fitting hole 172 is a rigid body portion 174, and the rigid body portion 174 is on the same plane perpendicular to the central axis of the clip body 110. The spacer 170 has four elastic pieces 176 that are bent from the four sides of the rigid portion 174 and extend obliquely linearly in a direction away from the leg fitting hole 172 and the main body head 112 of the clip main body 110.

  In FIG. 10, the conventional spacer 170 and the tab 80 b of the CSA 80 are interposed between the main body head 12 of the clip main body 10 and the body 90. When there is a gap (hereinafter also referred to as “backlash”) between the main body head 12 of the clip body 10, the tab 80 b of the CSA 80, the spacer 170, and the body 90, the backlash amount d is the elastic piece of the spacer 170. If it is within the compression elastic deformation range of 176, the elastic piece 176 removes the backlash by the compression elastic deformation. However, the two-dot chain line in FIG. 10 shows a state in which the backlash exists between the elastic piece 176 and the body 90 in a free state, and the backlash cannot be absorbed by the compression elastic deformation of the elastic piece 176.

JP 2008-020006 A

The conventional spacer 170 has room for improvement in the following points.
In FIG. 12, when the clip body axial length (also referred to as “neck length”) between the body head 112 and the body of the clip body 110 corresponds to a long fixture 101, the conventional spacer 170 has an elastic piece. Unless the length of 176 is increased, the backlash amount d in the length under the neck cannot be absorbed by the elastic deformation of the elastic piece 176 as shown in FIG. If there is backlash, an appropriate insertion load cannot be obtained, which may cause abnormal noise. As indicated by a two-dot chain line in FIG. 11, the amount of elastic deformation in the clip body axial direction of the elastic piece 176 of the spacer 170 with respect to a predetermined reference insertion load (for example, 40 N) into the fixing tool mounting hole 90d of the body 90 is as follows. This is because it is small (for example, 0.3 mm).

  In addition, if the elastic piece 176 is lengthened until the backlash amount d disappears in FIG. 10, the attachment area of the spacer 170 to the body 90, that is, the area of the region where the spacer 170 is in contact with the body 90 increases, which is disadvantageous in terms of the attachment space. As a result, it becomes difficult to mount the fixture 101 and the CSA on the narrow A pillar.

  An object of the present invention is to increase the amount of elastic deformation of the spacer in the axial direction of the clip body with respect to the reference insertion load of the fixture to the fixture fixing hole of the body without increasing the mounting area of the spacer to the body than before. An object of the present invention is to provide a fixture that can be larger than the amount, and a CSA fixing device using the fixture.

  The fixture of the present invention that achieves the above object and the CSA fixing device using the same are as follows.

(1) The fixture of the present invention has a clip main body having a main body head and a main body leg, a lock pin that can be inserted into the clip main body, and a leg fitting hole in the central portion. And a spacer fitted to the main body leg of the clip main body. The spacer is formed from the spacer part closer to the center of the leg fitting hole than both ends of the leg fitting hole in a direction parallel to one direction in the plan view of the spacer to both ends in one direction in the plan view of the spacer. And an elastically deformable portion that is elastically deformable in the clip body axial direction.

(2) In the fixture of the above (1), the cross-sectional shape of the main body leg portion, the planar view shape of the spacer, and the shape of the leg fitting hole are all rectangular. One direction of the spacer is the longitudinal direction of the rectangular spacer. The rectangular shape includes a shape obtained by rounding corners of a rectangular shape and a shape in which a rectangular side is curved or uneven (hereinafter the same).

(3) In the fixing device of (2) above, a portion of the leg fitting hole closer to the center in the longitudinal direction of the spacer than the both ends of the leg fitting hole in the longitudinal direction of the spacer on the back surface of the clip body head facing surface In addition, a plurality of protrusions that protrude to the same plane are formed on the side away from the main body head in the clip main body axial direction. The plurality of protrusions include a first protrusion located at a central portion in the spacer longitudinal direction and a second protrusion located at a spacer portion spaced from the first protrusion in the spacer longitudinal direction.

(4) In the fixing device according to (3), the elastically deforming portion of the spacer is curved or inclined toward the side away from the head of the main body as it approaches both ends in the longitudinal direction of the spacer, and the portion of the second protrusion is Except for the spacer, the plate thickness decreases as it approaches both ends in the longitudinal direction.

(5) A CSA fixing device that fixes a CSA that is a member to be attached to a vehicle body using the fixture according to any one of (1) to (4) above, wherein the main body leg portion is a CSA. A plurality of tab leg insertion holes and spacer leg fitting holes are inserted into the fixing attachment holes formed on the body, and the lock pin is inserted into the clip body to the main holding position. In this state, the elastic deformation portion of the spacer is compressed and elastically deformed in the axial direction of the clip body.
The spacer removes the backlash between the main body head, the tab, the spacer, and the body due to the compression elastic deformation of the elastic deformation portion, regardless of variations in the distance between the main body head of the clip main body and the body.

According to the fixture of the above (1), the elastically deformable portion is moved from the spacer portion closer to the center of the leg fitting hole than both ends of the leg fitting hole in a direction parallel to one direction in a plan view of the spacer. Therefore, the range that can be elastically deformed compared to the conventional spacer is expanded in a direction parallel to the one direction in the plan view of the spacer. That is, the length of the elastic deformation portion of the spacer of the present invention is longer than the length of the elastic piece of the conventional spacer. Further, the elastic deformation portion starts from the peripheral edge portion itself of the leg fitting hole as compared with the conventional spacer.
As a result, for example, as shown in FIG. 11, the amount of elastic deformation of the spacer in the clip body axial direction with respect to a predetermined reference insertion load (for example, 40 N) of the fixture to the body fixture attachment hole is larger than the elastic deformation of the conventional spacer. Also increases, for example, from 0.3 mm to 3.3 mm. As a result, for example, as shown in FIG. 10, the elastic deformation portion can be compressed and elastically deformed in the axial direction of the clip body by applying the spacer tip to the body without making the length of the spacer longer than that of the conventional spacer.
As a result, an appropriate insertion load can be obtained, and it is suitable for variations in the axial distance (under neck length) of the clip body between the head of the clip body and the body, or for a fixture with a long under neck length. it can. In addition, the backlash of the fixture and the attached member can be stably suppressed without using a spacer.

  According to the fixing device of (2) above, the cross-sectional shape of the main body leg, the shape of the spacer in plan view, and the shape of the leg fitting hole are all rectangular, and one direction of the spacer is the length of the rectangular spacer. Since the direction is set, it is possible to easily cope with the narrow front pillar without increasing the size of the fixture in the direction orthogonal to the longitudinal direction of the rectangular spacer.

  According to the fixing device of (3) above, since a plurality of protrusions projecting to the same plane are formed, when removing the spacer set on the jig with the protrusions facing the jig side and assembling it to the clip body In addition, the placement of the spacer on the jig is stable.

  According to the fixture of (4) above, the elastic deformation portion of the spacer is curved or inclined, and the thickness decreases as it approaches both ends in the longitudinal direction of the spacer. It can be elastically deformed almost uniformly. The elastic deformation part does not elastically deform only at the root part. As a result, the amount of elastic deformation of the spacer in the clip body axial direction with respect to the amount of change in the insertion load of the fixture increases.

  According to the CSA fixing device of the above (5), the spacer is clipped regardless of variation or increase in the distance between the head of the clip body and the body (length under the neck) due to compression elastic deformation of the elastic deformation portion. Since the backlash between the main body head of the main body, the CSA tab, the spacer, and the body can be absorbed, it is not necessary to select and use a spacer in accordance with the variation and increase in the length under the neck when fixing the CSA. In addition, one type of fixture can be commonly used for a plurality of types of vehicles having different neck lengths, and the fixture can be shared across a plurality of types of vehicles.

It is a perspective view of the fixture concerning one example of the present invention. It is a front view of the fixing tool of FIG. It is a side view of the fixing tool of FIG. FIG. 3 is a layout diagram of a fixture in a vehicle. It is an expanded sectional view in the A pillar part of a CSA fixing device. It is a perspective view of a spacer among fixtures. It is a front view of the spacer of FIG. It is a rear view of the spacer of FIG. It is a side view of the spacer of FIG. It is a front view of the fixture which mounted | wore the fixing clip of this invention with the spacer of this invention and the conventional spacer (what was shown with the dashed-two dotted line) of patent document 1. FIG. It is a graph of the insertion load of the fixture into the body fixture attachment hole versus the deformation amount in the spacer thickness direction, where the solid line indicates the characteristics of the fixture of the present invention, and the two-dot chain line indicates the characteristics of the conventional fixture. It is a front view of the conventional fixture which mounted | wore the clip main body of the same structure as the clip main body of this invention with the conventional spacer of FIG. It is a perspective view of the conventional spacer disclosed in Patent Document 1. It is a front view of the conventional spacer of FIG. It is a side view of the conventional spacer of FIG.

A fixture 1 according to an embodiment of the present invention and a CSA fixing device 2 for attaching a CSA to a vehicle body using the fixture will be described with reference to FIGS.
In FIG. 5, FR indicates the front side of the vehicle, and IN indicates the inner side direction of the vehicle left-right direction.

[CSA fixing device]
As shown in FIG. 5, the CSA fixing device 2 is a device that uses a fixing tool 1 to fix a member to be attached, for example, a CSA 80 to a vehicle body 90.
The CSA fixing device 2 includes a member to be attached, for example, a CSA 80, and a fixture 1 for attaching the CSA 80 to a vehicle body 90 at a tab 80b portion. The attached member may be other than the CSA 80, for example, a CSA casing (not shown).

In FIG. 4, the vehicle body 90 to which the CSA 80 is attached is, for example, a front pillar (also referred to as an A pillar). However, it is not limited to the A pillar, and may be a side rail.
FIG. 5 shows an example in which the body to which the CSA 80 is attached is an A pillar. The A pillar 90 includes an inner panel 90a, an outer panel 90b, and a reinforcement 90c.
FIG. 5 also shows a vehicle front shield glass 92, weather strips 94 and 96, and A pillar garnish 98.

  The CSA 80 includes a main body portion 80a extending along the CSA longitudinal direction, and a tongue-like tab 80b extending from the main body portion 80a toward the fixture 1 at a plurality of positions in the longitudinal direction of the main body portion 80a. 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. 5 in the case of roll folding, and is substantially rectangular in the case of bellows folding. The CSA main body 80a is located on the opposite side (vehicle rear side) of the front shield glass 92 of the fixture 1.

  As shown in FIG. 5, at the time of a vehicle collision, an inflation gas is supplied from an inflator (not shown), the CSA 80 is deployed, and the A pillar garnish 98 is pushed away from the inner panel 90a by this deployment 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 to restrain the occupant from the side door side. In FIG. 5, 98 ′ shows a part of the state where the A-pillar garnish 98 is expanded, and 80 ′ shows a part of the deployed state of the CSA 80.

〔Fixture〕
As shown in FIGS. 1 to 3, the fixture 1 includes a clip main body 10 having a main body head portion 12 and a main body leg portion 40, and is separated from the clip main body 10 in the lock pin insertion hole 20 of the clip main body 10. The lock pin 50 is detachably inserted, and the clip body 10 is a separate body and includes a spacer 70 fitted to the body leg 40. The clip body 10, the lock pin 50, and the spacer 70 are made of a resin material having flexibility. The resin material is, for example, polyacetal or polyhexamethylene adipamide. However, other resin materials may be used as long as they are flexible and have a necessary strength.

[Clip body of fixture]
As shown in FIGS. 1 to 3 and 10, the shape of the main body head 12 and the main body leg portion 40 of the clip main body 10 is in a plane orthogonal to the clip main body central axis (clip main body axis) 10 a (FIG. 3). It is desirable that the outer shape of is rectangular. However, the shape is not limited to a rectangular shape, and may be an elliptical shape or a circular shape. The shape of the fixture mounting hole 90d of the body 90 is the same.
In the case of a rectangular shape, the rectangular shape includes a shape in which corners of the rectangular shape are rounded and a shape in which a rectangular side is curved or uneven. When the CSA 80 is attached to the fixture attachment hole 90d of the body 90 by the fixture 1, the direction in which the long side of the rectangular outer shape of the main body head 12 extends is parallel to the direction in which the CSA body 80a extends.

The main body head 12 of the clip main body 10 includes a seat portion 14 that is orthogonal to the central axis 10a of the clip main body 10, a narrow width portion 16 that is located on the opposite side of the main body leg 40 from the seat portion 14, and a narrow width portion 16. And a connecting portion 18 that connects the seat portion 14 to each other.
In the direction P perpendicular to the CSA longitudinal direction, the width of the narrow portion 16 is narrower than the width of the seat portion 14. Thereby, as shown in FIG. 5, the outer shape of the cross section of the CSA 80 can be brought close to the central axis 10 a of the clip body 10, and the width of the A pillar garnish 98 can be narrowed. The width of the connecting portion 18 in the direction P perpendicular to the CSA longitudinal direction increases from the narrow width portion 16 toward the seat portion 14.

  As shown in FIG. 1, the clip body 10 has a lock pin insertion hole 20 extending in the direction along the center axis 10 a of the clip body 10 at the center. The center axis of the lock pin insertion hole 20 coincides with the center axis 10 a of the clip body 10. The lock pin insertion hole 20 opens on the opposite side of the main body leg 40 in the direction along the central axis of the lock pin insertion hole 20. The lock pin insertion hole 20 extends from the upper end of the main body head 12 to the bottom wall formed near the lower end of the main body leg 40. The lock pin 50 is inserted in the axial direction from the opening of the lock pin insertion hole 20.

  As shown in FIG. 3, a backup rib 48 is provided in the lock pin insertion hole 20. The backup rib 48 extends downward from substantially the same height as the upper surface of the seat 14 to the bottom wall near the lower end of the main body leg 40. A space portion into which the pin leg portion 54 of the lock pin 50 is inserted is provided between the backup rib 48 and the inner surface of the hollow main body leg portion 40.

  As shown in FIGS. 1 to 3, the main body head 12 includes a pair of side walls 22 </ b> L extending in the CSA longitudinal direction L on both sides of the direction P perpendicular to the CSA longitudinal direction of the lock pin insertion hole 20, and the lock pin insertion hole 20. And a pair of side walls 22P extending in a direction P perpendicular to the CSA longitudinal direction. The pair of side walls 22L rise from the seat 14 to the opposite side of the main body leg 40 and extend to the tip of the main body head 12 along the axial direction of the clip main body. The pair of side walls 22 </ b> P rises from the seat portion 14 to the side opposite to the main body leg portion 40.

  The lock pin insertion hole 20 is covered with a pair of side walls 22L in a direction P orthogonal to the CSA longitudinal direction at least at the upper end in the vertical direction of FIGS. The lock pin insertion hole 20 is covered with a pair of side walls 22P extending in a direction P perpendicular to the CSA longitudinal direction at least at the upper end in the vertical direction of FIGS. Therefore, the lock pin insertion hole 20 is surrounded by a pair of side walls 22L and a pair of side walls 22P at least at the upper end in the vertical direction of FIGS.

The distance between the pair of side walls 22L in the direction P orthogonal to the CSA longitudinal direction is larger than the longitudinal end portion 22Le at the longitudinal center portion 22Lc.
The distance between the inner surfaces of the pair of side walls 22L extending in the CSA longitudinal direction L is wider than the width of the jig that is narrower than the adult human finger width in both the longitudinal central portion 22Lc and the longitudinal end portion 22Le. The dimensions are set narrower than the width. Accordingly, the jig enters the gap between the inner surfaces of the pair of side walls 22L, that is, the opening 20, but the finger does not enter or is difficult to enter.

  The main body leg portion 40 of the clip main body 10 extends in the direction orthogonal to the seat portion 14 from the seat portion 14 to the opposite side of the main body head portion 12. The main body leg portion 40 has a rectangular cross section parallel to the seat portion 14. A locking claw 42 that can be elastically displaced in a direction orthogonal to the side wall is provided on the side wall of the main body leg 40. As shown in FIGS. 1 to 3, two locking claws 42 may be provided, one for each pair of side walls extending in the CSA longitudinal direction L, or one for each of the four side walls. Four may be provided. The illustrated example shows a case where a total of two are provided.

  A flexible portion 44 is formed on the side wall of the main body leg portion 40 by separating the three sides from the side wall by a slit 46. The flexible portion 44 is connected to the side wall at the base at the end on the side away from the main body head 12. Each latching claw 42 is formed at a portion away from the base in the longitudinal direction of each flexible portion 44, and the outer end of the latching claw 42 is in the free state of the flexible portion 44, and the clip body central axis 10 a. It protrudes from the outer surface of the side wall of the main body leg part 40 in the direction orthogonal to.

  3, 5, and 10, when the main body leg portion 40 is attached to the edge of the fixture attachment hole 90 d of the inner panel 90 a, the locking claw 42 passes through the fixture attachment hole 90 d portion of the flexible portion 44. With the elastic deformation, the locking claw 42 moves backward toward the central axis 10a side of the clip body, and the locking claw 42 passes through the fixing tool mounting hole 90d. After passing, the latching claw 42 returns to its original position due to the elasticity of the flexible portion 44. Next, when the lock pin 50 is pushed from the temporary holding position P1 to the main holding position P2 in FIG. 3 and the pin leg portion 54 is interposed between the locking claw 42 and the backup rib 48, the locking claw 42 is clipped. The clip body 10 cannot be retracted from the peripheral part of the fixture mounting hole of the inner panel 90a.

When it becomes necessary to remove the clip main body 10 from the fixing tool mounting hole 90d portion of the body 90 during maintenance or the like, the clip main body is first used by using a lock pin removal tool or jig (not shown). Remove from 10.
Next, using a clip body removal jig (not shown), the locking claw 42 is retracted toward the clip body center axis 10a, and in this state, the clip body 10 is removed from the fixing tool mounting hole 90d. The locking claw 42 may be provided with a groove 44a. The bottom surface of the groove 44a may be a tapered surface 44b. When the clip body removal jig is inserted into the lock pin insertion hole 20, the clip body removal jig may contact the tapered surface 44b.

[Lock pin of fixture]
As shown in FIG. 1 and FIG. 3, the lock pin 50 has a lock pin center axis (lock pin axis) 50a. The lock pin center axis 50a is aligned with the clip body center axis 10a and is inserted into the lock pin insertion hole 20. Inserted. When the lock pin 50 is in the temporary holding position P1 in the middle of insertion into the lock pin insertion hole 20, the lock pin 50 is temporarily held (temporarily fixed) to the clip body 10, and the lock pin 50 is inserted into the lock pin insertion hole 20. When the lock pin 50 is in the full holding position P2 inserted to the back, the lock pin 50 is fully held (fixed) to the clip body 10.

  The outer shape of the lock pin 50 in a plan view viewed along the lock pin central axis 50a is substantially rectangular. When the CSA 80 is attached to the body 90 with the fixture 1 and the lock pin 50 is temporarily or permanently held on the lock pin main body 10, the rectangular length of the lock pin 50 when viewed along the lock pin central axis 50a. The direction in which the side extends and the direction in which the CSA body 80a extends are parallel to each other.

  The lock pin 50 includes a pin head portion 52 that is rectangular in plan view, and pin leg portions 54 that extend from the pin head portion 52 to the insertion side of the clip body substantially parallel to the lock pin center axis 50a. When two locking claws 42 are provided on the main body leg portion 40, two pin leg portions 54 are provided, one on each of the two long sides of the rectangular pin head 52. In the case where four locking claws 42 are provided on the main body leg portion 40, four pin leg portions 54 are provided, one on each side of the rectangular pin head 52. The illustrated example shows a case where two locking claws 42 are provided. The plurality of pin legs 54 are separated from each other and are connected only to the pin head 52.

  As shown in FIG. 3, the outer surfaces of the two pin leg portions 54 that are coupled to the long side of the rectangular pin head 52 and are opposed to each other are flexible in a direction perpendicular to the lock pin central axis 50a. And a pin claw portion 56 that is formed on the pin flexible portion 58 and protrudes in a direction away from the lock pin central axis 50a. The pin flexible portion 58 is coupled to the pin leg portion 54 at an end portion on the side far from the pin head portion 52. When the pin flexible portion 58 is elastically deformed, the pin claw portion 56 can be elastically displaced in a direction orthogonal to the lock pin central axis 50a.

  As shown in FIGS. 1 to 3, the pair of side walls 22 </ b> L of the main body head 12 of the clip body 10 has a direction P perpendicular to the CSA longitudinal direction of the clip body central axis 10 a at the longitudinal center portion 22 </ b> Lc of the side wall 22 </ b> L. Are provided with a temporary holding (temporary fastening) locking hole 26 penetrating the longitudinal center portion 22Lc and a main holding (final fastening) locking hole 28 below the temporary holding (final fastening) locking hole 28. The temporary holding and locking holes 26 and the main holding and locking holes 28 are provided in order from the distal end side of the main body head portion 12 to the seat portion 14 side, and are provided at intervals from each other in the clip main body axial direction. ing. The pin claw portion 56 protrudes outward from the outer surface of the pin leg portion 54. When the lock pin 50 is inserted into the lock pin insertion hole 20, the pin claw portion 56 is pushed by the pair of side walls 22L and is on the side of the lock pin central axis 50a. It is elastically displaced. When the pin claw portion 56 comes to the positions of the temporary holding locking hole 26 and the main holding locking hole 28, the pin claw portion 56 is returned to the original position by the elasticity of the pin flexible portion 58, and the temporary holding locking hole 26 and the main holding locking hole 26, respectively. It rushes into the locking hole 28.

  As shown in FIG. 1 to FIG. 3, the temporary holding and locking hole 26 is located at a predetermined distance from the tip of the main body head 12 on the side far from the main body leg 40 toward the main body leg 40. When the pin claw portion 56 of the lock pin 50 enters the temporary holding locking hole 26 and locks into the temporary holding locking hole 26, the temporary holding locking hole 26 is configured so that the top surface of the pin head 52 is the main body head. 12 is provided at a position that does not protrude from the tip of the body 12 to the side opposite to the main body leg 40. Thus, when the lock pin position is viewed on the basis of the lower surface position of the pin claw portion 56 (hereinafter the same), when the lock pin 50 is in the temporary holding position P1, the entire lock pin 50 is positioned in the lock pin insertion hole 20. To do. In this state, the top surface of the pin head 52 of the lock pin 50 does not protrude from the tip of the main body head 12 on the side far from the main body leg 40 to the side opposite to the main body leg 40.

  When the lock pin 50 is in the temporary holding position P <b> 1, the lower end of the pin leg portion 54 of the lock pin 50 is above the upper end position of the locking claw 42. Thus, when the main body leg portion 40 of the clip main body 10 is inserted into the clip mounting hole 90d of the body 90, the locking claw 42 can be retracted toward the clip main body central axis 10a, and the main body leg portion 40 is attached to the clip 90 of the body 90. It can be attached to the hole 90d portion.

  When the lock pin 50 is in the temporary holding position P1, when the clip body insertion load is applied to the clip body 10, the locking claw 42 is elastically displaced toward the side closer to the clip body center axis 10a and moves backward. It passes through the clip mounting hole 90d. After passing, the latching claw 42 is elastically returned to its original position, and the clip body 10 is attached to the clip attachment hole 90d portion of the vehicle body 90. At this time, the lock pin 50 is still in the temporary holding position P1.

  As shown in FIG. 1 to FIG. 3 and FIG. 10, the main holding locking hole 28 is provided further to the main body leg 40 side than the temporary holding locking hole 26 in a direction parallel to the clip main body axis 10 a. . When the clip body 10 is attached to the clip attachment hole 90d portion of the vehicle body 90 and the pin claw portion 56 is still in the temporary holding position P1, the lock pin 50 is inserted into the body leg portion by the lock pin insertion jig. When the pin is further pushed into the side 40, the pin flexible portion 58 is elastically deformed so as to be retracted toward the lock pin central axis 50a side, and the pin claw portion 56 is detached from the temporary holding locking hole 26 and moves toward the body leg 40 side. To do. When the pin claw portion 56 comes to the position of the main holding locking hole 28, the pin flexible portion 58 is elastically restored, the pin claw portion 56 enters and locks into the main holding locking hole 28, and the lock pin 50 is locked. It is held at the holding position P2.

  As shown in FIG. 3, when the lock pin 50 is in the main holding position P <b> 2, the lower end portion of the pin leg portion 54 of the lock pin 50 is lower than the upper end position of the main body flexible portion 44 of the main body leg portion 40 in the clip main body 10. The pin leg portion 54 is located between the main body flexible portion 44 of the main body leg portion 40 and the backup rib 48. As a result, the latching claw 42 of the clip body 10 cannot be elastically displaced toward the side closer to the clip body center axis 10 a, and the clip body 10 cannot be detached from the body 90 and is locked to the body 90. .

In the above description, the insertion load of the clip body 10 into the body 90 is a load greater than the sliding frictional force between the locking claw 42 and the inner surface of the fixture mounting hole 90d, and can be adjusted by selecting the bending rigidity of the body flexible portion 44. Value.
The insertion load of the lock pin 50 into the clip body 10 is a load greater than the sliding frictional force between the pin claw portion 56 and the inner surface of the longitudinal center portion 22Lc of the side wall 22L, and the selection of the bending rigidity of the pin flexible portion 58 is selected. The value can be adjusted by.
The lock pin insertion load is set higher than the clip body insertion load.

[Fixing device spacer]
The spacer 70 preferably has a rectangular shape in plan view. However, the shape is not limited to a rectangular shape, and may be an elliptical shape or a circular shape. In the case of a rectangular shape, the rectangular shape includes a shape in which corners of the rectangular shape are rounded and a shape in which a rectangular side is curved or uneven. In the example of FIG. 8, the spacer 70 has a rectangular shape in a plan view, and a leg fitting hole 72 is formed in the central portion in the longitudinal direction of the rectangular shape. The leg 40 is fitted. The spacer 70 has an elastic deformation portion 76 formed from the spacer portion closer to the center of the spacer longitudinal direction of the leg fitting hole 72 to both ends of the spacer 70 in the longitudinal direction than both ends of the leg fitting hole 72 in the longitudinal direction of the spacer. ing. The elastic deformation portion 76 can be elastically deformed in the clip body axial direction. A spacer portion between the elastic deformation portions 76 located on both sides in the longitudinal direction of the spacer 70 is a rigid body portion 74 having higher rigidity (not necessarily a complete rigid body) than the elastic deformation portion 76. The boundary between the rigid body portion 74 and the elastic deformation portion 76 in the spacer longitudinal direction is closer to the center in the spacer longitudinal direction of the leg fitting hole 72 than to both ends of the leg fitting hole 72 in the spacer longitudinal direction.

In a state where the spacer 70 is fitted to the body leg portion 40 of the clip body 10, the elastic deformation portion 76 of the spacer 70 is curved toward the side away from the body head 12 in the clip body axial direction as approaching both longitudinal ends of the spacer 70. Or is inclined and extends linearly. FIG. 6 and FIG. 7 show the case where it is curved. The elastic deformation portion 76 of the spacer 70 becomes thinner as it approaches the both ends in the longitudinal direction of the spacer except for a portion of a second protrusion 78b described below. The upper surface of the rigid portion 74 is substantially flat and is orthogonal to the clip body central axis 10a.
In the direction orthogonal to the longitudinal direction of the spacer 70, the spacer 70 extends linearly over the entire length between both ends, and does not have an elastic piece bent at both ends in the direction orthogonal to the longitudinal direction as in the prior art. .

  The elastic deformation portion 76 of the spacer 70 of the present invention and the elastic piece 176 of the conventional spacer 170 approach a flat shape when subjected to the compression force in the clip body axial direction. The spacer 70 of the present invention has a plan view shape before deformation so as not to protrude outward from the plan view outer shape of the conventional spacer 170 which is substantially flat even in a substantially flat state. As shown, the conventional spacer 170 is positioned a predetermined amount inside the outer shape of the planar view before deformation. Here, the predetermined amount is an amount that does not protrude from the deformed outer shape of the conventional spacer 170 even when the deformed outer shape of the spacer 70 is larger than the deformed outer shape. Thereby, the attachment area to the body 90 of the spacer 70 does not increase more than before.

  As shown in FIG. 10, the elastic deformation portion 76 of the spacer 70 of the present invention is longer than the elastic piece of the conventional spacer 170 in that the length of the elastically deformable portion is the rectangular shape of the spacer 70 in the free state of the spacer 70. Long in the longitudinal direction. Therefore, the amount of elastic deformation of the spacer 70 of the present invention in the clip body axial direction relative to the reference compression force in the clip body axial direction is larger than that of the conventional spacer 170. The backlash d in FIG. 10 is removed by the increase in the amount of elastic deformation. In the example shown in FIG. 11, the spacer 70 of the present invention is used when the reference compression force (the insertion load of the body 90 of the fixture 1 that is an assembly of the body clip 10 and the spacer 70 into the fixture mounting hole 90 d) is 40 N. The amount of elastic deformation is 3.3 mm, which is about 11 times as large as 0.3 mm of the amount of elastic deformation of the conventional spacer 170. Due to this increase in the amount of elastic deformation, the tip of the elastic deformation portion 76 hits the body 90 and the elastic deformation portion 76 is compressed and elastically deformed in the axial direction of the clip body, so that there is a gap between the elastic piece 176 and the body 90 of the conventional spacer 170 in FIG. The backlash d is removed.

  In the state where the spacer 70 is fitted to the main body leg portion 40 of the clip main body 10, the leg portion fitting hole 72 is located on the back surface of the spacer 70 facing the clip main body head from both ends of the leg fitting hole 72 in the longitudinal direction of the spacer. A plurality of projections 78 projecting to the same plane in the direction away from the head of the main body in the axial direction of the clip main body are formed in a portion closer to the center of the spacer in the longitudinal direction. When the spacer 70 is assembled to the clip body 10, the spacer 70 is placed on a jig having a flat upper surface, but the protrusion 78 is provided so that the spacer 70 can be stably placed on the jig. It is done. The tips of the plurality of projections 78 are positioned on the same plane so that the tips of all the projections 78 are in contact with the upper surface of the jig.

  As shown in FIGS. 6 to 9, the plurality of protrusions 78 includes a first protrusion 78a located at the center in the spacer longitudinal direction and a first spacer located at a spacer portion spaced from the first protrusion 78a in the spacer longitudinal direction. 2 projections 78b. The second protrusion 78 b may be located on the elastic deformation portion 76 of the spacer 70. In that case, since the rigidity of the portion where the second protrusion 78b of the elastic deformation portion 76 is located is increased by the second protrusion 78b, it does not elastically deform or hardly elastically deforms in the clip body axial direction. Similarly, the elastic deformation portion 76 is not elastically deformed or hardly elastically deformed in the axial direction of the clip body because the rigidity of the portion where the first protrusion 78a is located is increased by the first protrusion 78a. The first protrusions 78 a extend in the direction perpendicular to the spacer longitudinal direction from the end of the spacer in the direction perpendicular to the spacer longitudinal direction to the edge of the leg fitting hole 72. On the other hand, the second protrusion 78b extends in a direction perpendicular to the spacer longitudinal direction from the end of the spacer in the direction perpendicular to the spacer longitudinal direction to a position just before the edge of the leg fitting hole 72.

  The arrangement of the spacers 70 in the CSA fixing device 2 is as follows. 10 and 5, the main body leg portion 40 of the clip main body 10 is inserted through the leg portion insertion holes 80c of the tabs 80b formed in the CSA 80 and the leg portion fitting holes 72 of the spacer 70, and the body 90 is inserted. It is pushed into the fixture mounting hole 90d formed in the above. The main body head 12, the tab 80b of the CSA 80, the spacer 70, and the body 90 are arranged in this order in the clip body axial direction. Next, as shown in FIG. 3, when the lock pin 50 is inserted into the lock pin insertion hole 20 of the clip body 10 to the main holding position P <b> 2, the fixture 1 is locked to the body 90 so as not to come off. In this state, the elastic deformation portion 76 of the spacer 70 is compressed and elastically deformed in the clip body axial direction. The spacer 70 is formed by compressive elastic deformation of the elastic deformation portion 76, regardless of variations in the distance between the main body head 12 and the body 90 (the length under the neck) or an increase in the length under the neck. If there is a backlash d between the spacer 70 and the body 90, the backlash d is removed.

Next, functions and effects of the fixture 1 and the CSA fixing device 2 will be described.
[Lock pin body, lock pin action and effects]
Before attaching a member to be attached, for example, CSA 80 to the vehicle body 90 using the fixture 1, the fixture 1 is transported in a state where the lock pin 50 is attached to the clip body 10 at the temporary holding position P1, Handled.

  When a member to be attached, for example, CSA 80 is attached to the vehicle body 90, the body leg 40 of the clip body 10 to which the lock pin 50 is attached at the temporary holding position P1, the hole 80c of the tab portion 80b of the CSA 80, and the spacer 70, and then the body leg 40 is pushed into the fixture mounting hole 90d of the body 90. When the locking claw 42 passes through the fixing tool mounting hole 90d, the locking claw 42 moves backward toward the clip body central axis 10a with the elastic deformation of the body flexible portion 44. When the locking claw 42 passes the fixing tool mounting hole 90d, the locking claw 42 returns to the outer position by the elasticity of the main body flexible portion 44, and the clip body 10 is mounted on the body 90 at the fixing tool mounting hole 90d. The

  Next, the lock pin 50 is pushed from the temporary holding position P1 to the main holding position P2 with a jig. At the main holding position P 2, the pin leg 54 of the lock pin 50 comes between the main body flexible portion 44 and the backup rib 48, so that the locking claw 42 is centered on the clip main body with elastic deformation of the main body flexible portion 44. The elastic member cannot be elastically displaced toward the axis 10a, and the fixture 1 is locked to the body 90 so that it cannot be removed from the fixture attachment hole 90d.

  Conventionally, the lock pin 50 may be pushed from the temporary holding position P1 to the main holding position P2 due to the impact of the clips colliding with each other during transportation of the fixture 1. Alternatively, when the CSA 80 is attached to the vehicle body 90, the lock pin 50 may be accidentally pushed from the temporary holding position P1 to the main holding position P2 before the main body leg portion 40 is inserted into the fixture attachment hole 90d of the body 90. there were. In that case, the locking claw 42 cannot be elastically displaced toward the clip main body central axis 10a, and the main body leg 40 cannot be inserted into the fixture attachment hole 90d.

  However, in the present invention, when the lock pin 50 is in the temporary holding position P1, the lock pin 50 does not protrude from the clip body 10 as shown in FIGS. Therefore, during transportation of the fixture 1, it is prevented or suppressed that the lock pins 50 at the temporary holding position P1 are pushed into the main holding position P2 due to collision of the clips. Moreover, when attaching the clip main body 10 to the body 90, it is suppressed that the lock pin 50 in the temporary holding position P1 is accidentally pushed with a finger. Therefore, the erroneous insertion of the lock pin 50 from the temporary holding position P1 to the main holding position P2 is suppressed. As a result, the mounting of the fixture 1 on the body 90 of the vehicle does not occur.

  Further, since the lock pin insertion hole 20 of the main body head 12 is surrounded by a pair of side walls 22L and a pair of walls 22P, the clip main body 10 is pinched by the pair of side walls 22L and the clip main body 10 is inserted into the body. When pushing into the clip mounting hole 90d, it is possible to prevent the jig or finger from coming into contact with the lock pin 50 at the temporary holding position P1 and erroneously inserting the lock pin 50 from the temporary holding position P1 to the main holding position P2. .

  In addition, since the lock pin insertion load is set higher than the clip body insertion load, even if the clip body insertion load is accidentally applied to the lock pin 50 when the clip body 10 is pushed into the fixing attachment hole 90d of the body 90, the lock pin 50 is locked. It is suppressed that the pin 50 is pushed into the main holding position P2.

[Operation and effect of spacer]
Since the elastic deformation portion 76 is formed from the portion closer to the spacer longitudinal direction center of the leg fitting hole 72 to both ends of the spacer 70 in the longitudinal direction than the both ends of the leg fitting hole 72 of the spacer 70 in the longitudinal direction of the spacer. The range in which the elastic deformation portion 76 can be elastically deformed, that is, the length in the spacer longitudinal direction of the elastic deformation portion 76 is larger in the spacer longitudinal direction than the length in the spacer longitudinal direction of the elastic piece 176 of the conventional spacer 170.

  As a result, the value of [the amount of change in the insertion load of the fixture 1 into the fixture attachment hole 90d] / [the amount of elastic deformation of the spacer 70 in the clip body axial direction] increases. That is, as shown in FIG. 11, the amount of elastic deformation in the clip body axial direction of the elastic deformation portion 76 of the spacer 70 with respect to a reference insertion load, for example, 40N, increases from the conventional 0.3 mm to 3.3 mm of the present invention. Nevertheless, the length of the spacer 70 in the longitudinal direction is not increased, but rather is shorter in the free state as shown in FIG. As a result, the backlash can be absorbed without increasing the longitudinal length of the spacer 70 to obtain an appropriate insertion load, and the clip body axial distance between the body head 12 of the clip body 10 and the body 90 can be obtained. It is possible to deal with the variation in (neck length) and the clip body 10 having a long neck length. As a result, it is not necessary to selectively use the spacer 70 according to the length under the neck. Moreover, the backlash of the to-be-attached member (for example, CSA80) between the main body head 12 and the body 90 can be suppressed and absorbed stably.

  Further, since the elastic deformation portion 76 of the spacer 70 is curved or inclined and the thickness becomes thinner as it approaches the both ends in the longitudinal direction of the spacer 70, the elastic deformation portion 76 is elastically deformed almost uniformly over its entire length. it can. As a result, in the spacer 70 of the present invention, the elasticity of the elastic deformation portion 76 of the spacer 70 in the axial direction of the clip body with respect to the amount of change in the insertion load of the fixture 1 is compared with an elastic deformation portion or elastic piece having a structure that is deformed only at the root portion. The amount of deformation increases.

  Further, since the spacer 70 is formed with a plurality of protrusions 78 that protrude to the same surface, when the spacer 70 set on the jig is taken out with the protrusion 78 facing the jig side and assembled to the clip body 10. In addition, the placement of the spacer 70 on the jig is stable.

  Further, in the CSA fixing device 2 using the fixing tool 1, the spacer 70 can be more elastically deformed than the conventional spacer 170, and the distance between the main body head 12 of the clip main body 10 and the body 90 varies. Also, the backlash between the main body head 12, the CSA tab 80b, the spacer 70, and the body 90 can be absorbed. As a result, in fixing the CSA 80, it is not necessary to selectively use the spacer 70 in accordance with the variation in the length of the neck under the clip body. In addition, one type of fixture 1 can be used in common as a fixture for a plurality of types of vehicles having different neck lengths, and the fixture 1 can be shared across a plurality of types of vehicles.

The present invention is not limited to the CSA fixture 1. The present invention is also applicable to other lock pin type fixtures, for example, CSA casing fixtures.
Moreover, although the elastic deformation part 76 demonstrated as an example the case where it formed along the spacer longitudinal direction, it is not limited to this. For example, the elastic deformation portion 76 may be formed along a direction (short direction) perpendicular to the spacer longitudinal direction.

DESCRIPTION OF SYMBOLS 1 Fixing tool 2 CSA fixing device 10 Clip main body 10a Center axis of clip main body (clip main axis)
12 Main body head 20 Lock pin insertion hole 40 Main body leg 42 Locking claw 50 Lock pin 50a Lock pin center axis (lock pin axis)
52 Pin head 56 Pin claw portion 70 Spacer 72 Leg fitting hole 74 Rigid body portion 76 Elastic deformation portion 78 Protrusion 78a First protrusion 78b Second protrusion 80 Curtain airbag (CSA)
80b Tab 80c Leg insertion hole 90 Vehicle body 90d Fixture mounting hole

Claims (5)

A clip body having a body head and a body leg;
A lock pin insertable into the clip body;
A spacer having a leg fitting hole in the center portion and fitted to the main body leg of the clip body in the leg fitting hole;
A fixing device comprising:
The spacer is unidirectional in a plan view of the spacer from a spacer portion closer to the center of the leg fitting hole than both ends of the leg fitting hole in a direction parallel to the one direction in a plan view of the spacer. A fixture having an elastically deformable portion that is formed over both ends and is elastically deformable in the clip body axial direction.   The cross-sectional shape of the main body leg, the plan view shape of the spacer, and the shape of the leg fitting hole are all rectangular, and one direction of the spacer is the longitudinal direction of the rectangular spacer. The fixture described.   On the back surface of the main body head-facing surface of the spacer, the main body in the axial direction of the clip main body is located closer to the center of the leg fitting hole than the both ends of the leg fitting hole in the longitudinal direction of the spacer. A plurality of protrusions that protrude to the same surface are formed on the side away from the head, the plurality of protrusions including a first protrusion located at a central portion in the spacer longitudinal direction, and a length of the spacer extending from the first protrusion. The fixture according to claim 2, further comprising a second protrusion located at a spacer portion spaced in a direction.   The elastic deformation portion of the spacer is curved or inclined toward the side away from the head of the main body as it approaches both ends in the longitudinal direction of the spacer, and at both ends in the longitudinal direction of the spacer except for the portion of the second protrusion. The fixture according to claim 3, wherein the thickness of the plate becomes thinner as approaching. A curtain airbag fixing device for fixing a curtain airbag, which is a member to be attached, to a vehicle body using the fixture according to any one of claims 1 to 4,
Fixing attachment holes formed in the body by inserting a plurality of leg insertion holes of tabs formed in the curtain airbag and leg fitting holes of the spacers into the clip airbag. The lock pin is inserted into the clip body up to the main stop position, and in this state, the elastic deformation portion of the spacer is compressed and elastically deformed in the clip body axial direction.
The spacer is fixed to the curtain airbag, which eliminates backlash between the main body head, the tab, the spacer, and the body, regardless of variations in the distance between the main body head and the body due to the compression elastic deformation of the elastic deformation portion. apparatus.

Images