JP5005518B2 - Automotive pillar trim - Google Patents

Description

  The present invention relates to a pillar trim of an automobile equipped with an air bag as a safety measure at the time of a side collision.

  In the automobile pillar trim described in Patent Document 1, two jump bases for guiding the inflation of the airbag are integrally projected upward on the top of the pillar trim body, and at the end of each jump base, An insertion portion that is inserted into the insertion port of the pillar portion of the vehicle body and engages with the periphery of the insertion port from the outside of the vehicle is integrally projected toward the outside of the vehicle. These jump stands are reinforced by ribs. The pillar trim main body near the lower side of the two jumping bases has a boss portion integrally projecting toward the vehicle outer side, and a clip inserted into the positioning hole of the pillar portion of the vehicle body is attached to the boss portion. ing.

On the other hand, the pillar trim of the automobile described in Patent Document 2 also has a shape different from that of Patent Document 1, but the pin-shaped boss part inserted into the positioning hole of the pillar part of the vehicle body projects integrally toward the outside of the vehicle. And the base of the boss is reinforced by triangular reinforcing ribs.
Japanese Patent No. 3866733 Japanese Patent No. 3759596

  By the way, in the above-mentioned Patent Document 1, the jumping table is reinforced by ribs. However, since a large inflation pressure acts instantaneously on the jumping table when the airbag is inflated, further measures for strengthening the jumping table may be taken. desirable. Further, since a large inflation pressure acts instantaneously on the insertion portion when the airbag is inflated, higher strength is desired. Furthermore, since the inflation pressure that has acted on the jump base and the insertion portion when the airbag is inflated also acts on the boss portion, a higher strength is also desired on the boss portion.

  Further, in Patent Document 2, the boss portion is reinforced by the reinforcing rib. However, at the time of assembly, the tip of the boss portion abuts against the edge of the positioning hole and is whitened or damaged by the action of bending force. There is a problem of end.

  The present invention has been made in view of the above points, and the object of the present invention is to increase the strength of the jumping base, the plug-in portion, and the boss portion, and to prevent the boss portion from being whitened or damaged during assembly. It is to be.

  In order to achieve the above object, the present invention is characterized in that the vicinity of the intersection between the jump base and the connecting portion connected to each other by the connecting portion and the boss portion are integrally connected by the reinforcing rib.

  Specifically, the present invention relates to an automobile in which an airbag is disposed so as to extend in the longitudinal direction of the vehicle body on the inside of the vehicle on the roof side and is covered and stored from the inside of the vehicle by a top ceiling. The following solution was taken for a resin-made pillar trim having a pillar trim body that is positioned and has a lower end edge of the top ceiling connected to the upper portion and covering the inner surface of the pillar portion of the vehicle body.

In other words, the invention according to claim 1 is provided on the outer side of the upper portion of the pillar trim main body, on the upper wall portion for guiding the airbag to the inner side of the vehicle, and on both ends of the upper wall portion in the longitudinal direction of the vehicle body. At least three jump tables formed in a substantially U-shaped cross-section with the provided side wall portions are integrally projected upward so as to be separated from each other in the longitudinal direction of the vehicle body, and each of the adjacent jump tables The lower ends of the opposing side wall portions are integrally connected to each other by a connecting portion projecting from the pillar trim body toward the vehicle outer side, and the vehicle outer side of each connecting portion is inserted into the insertion port of the pillar portion of the vehicle body. An insertion portion that locks from the vehicle outer side to the periphery of the insertion port is integrally projected toward the vehicle outer side, and the pillar trim body between the adjacent connection portions and below the both connection portions has a positioning hole for the pillar portion. Directly or indirectly into Boss is integrally projected toward the vehicle exterior that, near intersections between the two joining portions sandwiched by jumping of the side wall lower end and the connecting portion crosses the plate surface and the longitudinal direction of the vehicle body, the pillar trim It is characterized by being integrally connected to the boss part by a plate-like reinforcing rib integrally formed on the vehicle outer surface of the main body .

According to a second aspect of the present invention, in the first aspect of the present invention, the lower ends of both side wall portions of the jump stand sandwiched between the two connecting portions are downwardly directed toward the front or rear of the vehicle body when assembled to the vehicle body. The boss portion is located near the intersection between the lower end of the side wall portion and the connecting portion located on the lower side of the both side wall portions of the jump stand sandwiched between the two connecting portions. Are integrally connected to each other .

  According to the first aspect of the present invention, since the jump stand is supported from below by the boss portion through the reinforcing rib, the support rigidity is increased. Thereby, even if a large inflation pressure acts on the jump base when the airbag is inflated, the pressure is dispersed to the boss portion via the reinforcing rib, so that damage to the jump base due to the inflation pressure is reduced.

  Moreover, since the insertion part is provided integrally with the connection part and the connection part is supported from below by the boss part via the reinforcing rib, the support rigidity of the insertion part is also increased. As a result, even if a large inflation pressure acts on the insertion portion when the airbag is inflated, the inflation pressure is dispersed to the boss portion via the connecting portion and the reinforcing rib, so that damage to the insertion portion due to the inflation pressure is reduced. Is done.

  Even when the tip of the boss part abuts against the edge of the positioning hole during assembly and receives bending force, the bending force is distributed to the jumping base and the connecting part via the reinforcing ribs. Whitening phenomenon is prevented.

Moreover, since the end surface along the longitudinal direction of the reinforcing rib is supported integrally from the vehicle inner side by the pillar trim body, the supporting rigidity of the reinforcing rib is increased. As a result, the force acting on the reinforcing rib from the jumping base, the plug-in portion, and the boss portion when the airbag is inflated or assembled is also dispersed in the pillar trim body, so that deformation or breakage of the reinforcing rib itself is prevented.

  According to the invention of claim 2, since the reinforcing rib connects the side wall portion closer to the boss portion and the boss portion of the both side wall portions, the side wall portion far from the boss portion and the boss portion. The length of the reinforcing rib in the vertical direction is shorter than when the portions are connected with the reinforcing rib. Therefore, the rigidity of the reinforcing rib itself is increased. In addition, since the concave portion for forming the reinforcing rib of the mold is shortened, the mold structure is simplified and the mold can be easily removed to reduce molding defects.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 1 is a diagram showing a right side surface in an interior of a vehicle, and a front occupant P1 and a rear occupant P2 seated on a front seat and a rear seat (not shown) are indicated by phantom lines. A front pillar portion (A pillar portion) 1, a center pillar portion (B pillar portion) 3, and a rear pillar portion (C pillar portion) 5 that extend in the vertical direction are arranged in order from the front of the vehicle body. A front door 7 is disposed between the A pillar portion 1 and the B pillar portion 3, and a rear door 9 is disposed between the B pillar portion 3 and the C pillar portion 5. The inner surface of each pillar portion 1, 3, 5 of the vehicle body is covered with a resin A pillar trim 11, a B pillar trim 13, and a C pillar trim 15. Among them, the B pillar trim 13 is composed of an upper upper pillar trim 13a and a lower lower pillar trim 13b, and a seat belt shoulder anchor 17 of a seat belt for a front seat is disposed above the upper pillar trim 13a. The shoulder anchor 17 is configured so that the height position can be adjusted up and down according to the physique of the front occupant P1.

  2 shows the upper part of the upper pillar trim 13a corresponding to the B pillar portion 3. In FIG. 2, 19 is an outer pillar panel constituting the B pillar portion 3, and 21 is an inner joined to the inner side of the outer pillar panel 19. It is a pillar panel. On the inner side of the upper end (roof side) of the inner pillar panel 21, an airbag 23 of an airbag device for protecting the head of the occupant when the vehicle collides is provided from the A pillar portion 1 to the B pillar portion 3. It is arranged so as to extend in the longitudinal direction of the vehicle body up to the vicinity of the C pillar portion 5. The airbag 23 is folded and stored between a top ceiling 25 that covers the inner side of the inner pillar panel 21.

  An upper pillar trim 13a of the B pillar trim 13 is located below the airbag 23, and the upper pillar trim 13a includes a pillar trim body 27 that covers the inner surface of the B pillar portion 3. As shown in FIGS. 3 and 4, the pillar trim main body 27 is formed in a substantially U-shaped cross section by a front side portion 27 a on the vehicle inner side and a side surface portion 27 b on the front side and the rear side. In the center of the front portion 27a, a long hole portion 29 corresponding to the height adjustment of the seat belt shoulder anchor 17 is provided.

  The upper end edge of the front portion 27a of the pillar trim body 27 is inclined downward (downwardly forward) toward the front of the vehicle body (left side in FIG. 4). A jump stand support wall 41 is formed on the vehicle outer side (rear side) surface of the front portion 27a through the step portion 40 rather than the lower portion thereof. On the outer side of the upper part of the pillar trim body 27, that is, on the jump stand support wall 41, three jump stands 31, 33, 35 are separated from each other in the vehicle longitudinal direction along the upper edge in order from the front of the vehicle body. And it protrudes integrally toward upper direction so that the airbag 23 may be supported from the downward direction. These jump bases 31, 33, 35 are integrally connected to a pair of side wall portions 31a, 33a, 35a that are spaced apart from each other in the longitudinal direction of the vehicle body and the vehicle exterior at the upper ends of both side wall portions 31a, 33a, 35a. The wall portions 31b, 33b, 35b are formed in a substantially U-shaped cross section, and further, the inner edge portions of the side wall portions 31a, 33a, 35a and the inner side portions of the upper wall portions 31b, 33b, 35b are formed. Front wall portions 31c, 33c, and 35c that integrally connect the edge portions are provided. These front wall portions 31 c, 33 c, and 35 c constitute a part of the jump stand support wall 41. In addition, on the vehicle inner side of each front wall portion 31c, 33c, 35c, two protrusions 49 extending in the vertical direction with a space in the front-rear direction of the vehicle body are provided to protrude toward the vehicle inner side. Guide surfaces 31d, 33d, and 35d for guiding the airbag 23 to the inside of the vehicle face the inside of the vehicle on the upper walls 31b, 33b, and 35b of the jump bases 31, 33, and 35, respectively. The guide surfaces 31d, 33d, and 35d are inclined upward toward the vehicle outer side. The lower end of the side wall 33a of the central jump stand 33 is located on a line that is inclined downward toward the front of the vehicle body when assembled to the vehicle body along the inclined upper edge of the front portion 27a.

The lower ends of the opposite side wall portions 31a and 33a of the adjacent jump bases 31 and 33 are integrally connected to each other by a plate-like connecting portion 37 projecting toward the vehicle outer side to the pillar trim body 27. The lower ends of the opposite side wall portions 33a, 35a of the bases 33, 35 are also integrally connected to each other by a plate-like connecting portion 39 protruding from the pillar trim body 27.

  Here, as described above, the lower end of the front side wall 33a of the central jump base 33 is located below the lower end of the rear side wall 33a of the jump base 33. Is positioned below the rear connecting portion 39.

  A plate-like insertion portion 63 is integrally provided projecting upward at the end of the connecting portions 37 and 39 on the vehicle outer side. In addition, on the back surface (vehicle outer side) of each insertion portion 63 and the lower surface of each of the connection portions 37 and 39, three protruding rib ribs 63a are formed so as to extend over these. An insertion port 61 is opened in the inner pillar panel 21 (B pillar portion 3), and the insertion portion 63 is inserted into the insertion port 61.

  A boss 43 is formed on the back surface of the pillar trim body 27 between the two connecting portions 37 and 39 adjacent to each other via the central jump stand 33 and below the connecting portions 37 and 39 toward the vehicle exterior. Projected as a single unit. The boss portion 43 includes a boss portion main body 43a that protrudes substantially perpendicularly from the rear surface of the front portion 27a of the pillar trim main body 27, and the boss portion main body 43a includes two side walls 43b that are spaced apart from each other in the longitudinal direction of the vehicle body and face each other. An upper wall 43c that connects the upper ends of the side walls 43b, a top wall 43d that is formed integrally with the side walls 43b and the tip (outer end) of the upper wall 43c, the top wall 43d, and the back surface of the front portion 27a The two side walls 43b and the upper wall 43c are connected to each other so as to be connected to the top wall 43d and separated from each other by two ribs 43e. Thereby, the boss | hub part 43 has comprised the hollow shape which has the opening part 43g below. And the positioning pin part 43f which protrudes toward the vehicle outer side is integrally formed in the vehicle outer surface of the top surface wall 43d of the boss portion main body 43a. A positioning hole 65 is formed below the insertion opening 61 of the inner pillar panel 21 (B pillar portion 3), and the positioning pin portion 43f of the boss portion 43 is inserted into the positioning hole 65.

  Further, the upper wall 43c of the boss portion 43 is in the vicinity of the intersection of the connecting portion 37 and the lower end of the side wall portion 33a on the vehicle body front side of the both side walls 33a of the jump stand 33 sandwiched between the connecting portions 37 and 39. The plate surfaces intersect with the vehicle body front-rear direction and are integrally connected by plate-like reinforcing ribs 45 with the plate surface facing the vehicle body front-rear direction. The reinforcing rib 45 has an end face in the longitudinal direction formed integrally with a surface (back surface) on the vehicle exterior side of the pillar trim main body 27.

  A front vertical rib 51a and a rear vertical rib 51b extending in the vertical direction are positioned on the vehicle body front-rear direction end portions 27b and 27c side on the vehicle exterior side (the side shown in FIG. 3) of the front portion 27a of the pillar trim body 27. As shown in FIG. A plurality of horizontal ribs 53a are integrally formed on the front side of the front vertical rib 51a, and a plurality of horizontal ribs 53b are integrally formed on the rear side of the rear vertical rib 51b. The vertical ribs 51a and 51b and the boss portion 43 are connected by ribs 55 extending in the longitudinal direction of the vehicle body. Further, the boss portion 43 and the stepped portion 40 are integrally connected by a rib 57 provided substantially parallel to the reinforcing rib 45.

  As described above, in the present embodiment, since the jump base 33 is supported from below by the boss portion 43 via the reinforcing rib 45, the support rigidity is increased. Further, the insertion part 63 on the front side of the vehicle body is provided integrally with the connecting part 37, and the connecting part 37 is supported from below by the boss part 43 via the reinforcing rib. Is also growing. Further, since the reinforcing rib 45 is supported by the pillar trim body 27 from the vehicle inner side, the supporting rigidity of the reinforcing rib 45 is also increased.

  Further, the lower end edge of the top ceiling 25 is connected to the upper end of the pillar trim main body 27 in contact with the outside of the vehicle. When the airbag 23 expands and is folded downward from the folded state and is guided by the guide surfaces 31d, 33d, and 35d of the jump bases 31, 33, and 35, the top sealing 25 is caused by the inflation pressure of the airbag 23. The lower end edge of the airbag 23 is pushed to the inside of the vehicle, and the airbag 23 is inflated to the inside of the vehicle.

  In order to attach the upper pillar trim 13 a configured as described above to the B pillar portion 3, first, while tilting the upper pillar trim 13 a so that the insertion portion 63 of the upper pillar trim 13 a corresponds to the insertion port 61 of the inner pillar panel 21. The insertion part 63 is inserted into the insertion port 61. Then, the upper pillar trim 13a is pressed against the inner pillar panel 21 in a state where the upper pillar trim 13a is positioned by making the positioning pin portion 43f of the boss portion 43 correspond to the positioning hole 65 of the inner pillar panel 21. Then, the positioning pin portion 43f is fitted into the positioning hole 65 with its tip abutting against the edge of the positioning hole 65, and the insertion portion 63 is locked to the periphery of the insertion port 61 from the outside of the vehicle. At this time, a bending force due to contact with the periphery of the positioning hole 65 is applied to the tip of the positioning pin portion 43f. This bending force is distributed to the jump base 33 and the connecting portion 37 on the front side of the vehicle body via the reinforcing rib 45. Therefore, damage to the positioning pin portion 43f and whitening phenomenon are prevented. Further, since the reinforcing rib 45 is formed integrally with the pillar trim main body 27, and the force acting on the reinforcing rib 45 from the boss portion 43 is also distributed to the pillar trim main body 27, deformation and breakage of the reinforcing rib 45 are prevented.

  Further, at the time of a side collision, the airbag 23 is inflated and inflated to the vehicle interior side, and the inflation pressure acts so as to press the jump base 33 obliquely downward on the outside of the vehicle. Accordingly, the jump table 33 is prevented from being damaged by the expansion pressure. At this time, the same expansion pressure also acts on the insertion portion 63 on the front side of the vehicle body, but since the pressure is distributed to the boss portion 43 via the connecting portion 37 and the reinforcing rib 45, the insertion portion due to the expansion pressure is used. Damage to 63 is prevented and reduced. Further, the reinforcing rib 45 is formed integrally with the pillar trim main body 27, and the pressure acting on the reinforcing rib 45 from the jump base 33 or the insertion portion 63 on the front side of the vehicle body is also distributed to the pillar trim main body 27. Therefore, the reinforcing rib 45 itself Is prevented from being deformed or damaged.

  Further, the reinforcing rib 45 connects the boss portion 43 to the vicinity of the intersection of the side wall portion 33a on the vehicle body front side where the lower end portion of the both side wall portions 33a of the jump base 33 is positioned on the lower side and the connecting portion 37, and the boss portion 43. Since the lower end of the side wall portion 33a on the front side of the vehicle body is closer to the boss portion 43 than the lower end of the side wall portion 33a on the rear side of the vehicle body, the vertical length of the reinforcing rib 45 is equal to the side wall portion 33a on the rear side of the vehicle body and the connecting portion 39. Compared with the case where the reinforcing rib 45 that connects the vicinity of the intersection with the boss portion 43 is provided. Accordingly, the rigidity of the reinforcing rib 45 itself is increased, and the concave portion for forming the reinforcing rib 45 of the molding die is shortened, so that the mold structure is simplified and the mold removal is facilitated to reduce molding defects.

  Further, the lower end of the reinforcing rib 45 is connected to the upper wall 43c of the boss portion 43, and both ends of the upper wall 43c in the longitudinal direction of the vehicle body are connected to both side walls 43b of the boss portion 43. When the downward pressing force is applied, the boss portion 43 is not damaged.

  Further, since the boss portion 43 has a hollow shape having an opening portion 43g below, the surface of the connecting portion of the boss portion 43 in the pillar trim main body 27 is free from sink marks due to resin shrinkage after molding, and the appearance of the pillar trim main body 27 is improved. Will not be damaged.

In the above embodiment, an example in which the present invention is applied to the B pillar trim 13 has been described. However, the present invention can also be applied to the A pillar trim 11 and the C pillar trim 15. Further, the upper side edge of the pillar trim main body 27 is inclined downward toward the rear of the vehicle body, and the lower ends of both side walls of the jump base connected to the reinforcing rib 45 are positioned on a line inclined downward toward the rear of the vehicle body. The present invention is applicable even when

  In the above embodiment, the pillar trim main body 27 is provided with three jump bases 31, 33, 35, but may be provided with four or more.

  In the above embodiment, the boss portion 43 provided integrally with the pillar trim main body 27 is directly inserted into the positioning hole 65. However, for example, a clip is attached to the boss portion 43, and the clip is positioned in the positioning hole 65. You may make it insert indirectly, such as making it insert in.

  Further, in the above embodiment, the reinforcing rib 45 is formed so that the end surface along the longitudinal direction is integrally formed on the back surface of the pillar trim main body 27, but has a slight gap between the end surface and the back surface of the pillar trim main body. May be.

  INDUSTRIAL APPLICABILITY The present invention is useful as a pillar trim of an automobile equipped with an air bag as a safety measure at the time of a side collision.

It is a side view of the right side in the vehicle interior part of the motor vehicle provided with the pillar trim which concerns on embodiment of this invention. FIG. 4 is a cross-sectional view corresponding to the line AA in FIG. 3 showing a state in which an upper pillar trim is attached to the vehicle body side. It is the perspective view which looked at the upper part of the upper pillar trim from the vehicle outside. It is the perspective view which looked at the upper part of the upper pillar trim from the vehicle inside diagonally upward.

3 B pillar 11 A pillar trim 13 B pillar trim 13a Upper pillar trim 15 C pillar trim 23 Air bag 25 Top sealing 27 Pillar trim body
31, 33 , 35 jump stand
31a, 33a , 35a side wall
31b, 33b , 35b upper wall part 37 , 39 connection part 43 boss part 45 reinforcing rib 61 insertion port 63 insertion part
65 positioning holes

Claims (2)

In an automobile in which the airbag (23) is disposed so as to extend in the longitudinal direction of the vehicle body on the inner side of the vehicle on the roof side and is covered and stored from the inner side of the vehicle by the top sealing (25) , the airbag (23) is disposed below the airbag (23) . A pillar trim made of resin having a pillar trim body (27) that is positioned and has a lower end edge of the top ceiling (25) connected to the upper part and covering a vehicle inner side surface of the pillar part (3) of the vehicle body,
On the outer side of the upper part of the pillar trim body (27) , there are an upper wall part (31b, 33b , 35b) for guiding expansion of the airbag (23) to the inner side of the car , and the upper wall part (31b, 33b). , 35b) at least three jump bases (31 , 33, 35) formed in a substantially U-shaped cross section with side wall portions (31a, 33a, 35a) provided at both ends in the vehicle longitudinal direction, The lower ends of the opposing side wall portions (31a, 33a, 35a) of the adjacent jump bases (31 , 33, 35) that protrude integrally upward so as to be separated from each other are connected to the pillar trim body (27). Are integrally connected to each other by connecting portions (37, 39) projecting outward ,
Each connecting portion in the vehicle outer side of the (37, 39), spigot for engaging the exterior side in the plugged by insertion inlet (61) peripheral to the body of the pillar (3) of the insertion opening (61) (63) projecting integrally toward the outside of the vehicle,
The pillar trim body (27 ) between the adjacent connecting portions (37, 39) and below the connecting portions (37, 39 ) is directly or indirectly connected to the positioning hole (65) of the pillar portion (3). The boss portion (43) to be inserted into the vehicle is integrally projected toward the outside of the vehicle,
The near intersections of the side wall portion and (33a) bottom and the connecting portion (37) of the two joining portions jumping sandwiched between (37, 39) (33) intersects the plate surface and the longitudinal direction of the vehicle body, the pillar trim body A pillar trim of an automobile, wherein the pillar trim is integrally connected to the boss portion (43) by a plate-like reinforcing rib (45) integrally formed on the outer surface of the vehicle (27) . The pillar trim of an automobile according to claim 1.
The lower ends of both side wall portions (33a) of the jump stand (33) sandwiched between the two connecting portions (37, 39) are positioned on a line inclined downward toward the front or rear of the vehicle body when assembled to the vehicle body. ,
Near the intersection between the lower end of the side wall portion (33a) located on the lower side of the both side wall portions (33a) of the jump stand (33) sandwiched between the two connection portions (37, 39) and the connection portion (37) Is a pillar trim of an automobile which is integrally connected to the boss portion (43 ) by the reinforcing rib (45) .

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