JP6664281B2 - Car front pillar structure - Google Patents

Description

  The present invention relates to a front pillar structure of an automobile, in which a front pillar garnish forming a design surface is mounted on an outer surface of a front pillar frame.

  The inner surface and the outer surface, which are the design surfaces, of the steel pipe reinforcing frame 13 are covered with a resin inner panel 10 and an outer panel 11, respectively, to constitute the front pillar 6, and the inner inner panel 10 is reinforced with a blind rivet. A method in which a rib 10b having a semicircular support surface formed on the inner surface of an inner panel 10 and attached to an reinforcing frame 13 with an adhesive while being temporarily fixed to the reinforcing frame 13 is known from Patent Document 1 below. .

  Also, an upper body 2 and a lower body 3 made of carbon fiber reinforced resin are assembled to the lower body 3 by metal joints 7, 7r at the lower end of a front pillar and the lower end of a rear pillar of the upper body 2 and assembled. 2. Since the upper vehicle body 2 is made of carbon fiber reinforced resin, it can form a design surface by itself.

JP-A-1-103586 JP 2012-162098 A

  By the way, the one described in Patent Document 1 requires an adhesive and a blind rivet 14 at the same time when the resin inner panel 10 is joined to the reinforcing frame 13 made of steel pipe, so that the assembling workability is reduced. There's a problem.

  Further, the one described in Patent Document 2 is not only expensive because the front pillar and the rear pillar are composed only of carbon fiber reinforced resin, but also different from a ductile metal member, it is made of carbon fiber reinforced resin. This member cannot expect the effect of absorbing energy due to deformation at the time of collision, and thus may have insufficient collision resistance.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a front pillar structure of an automobile which is inexpensive and excellent in assemblability, energy absorption and aesthetic appearance.

To achieve the above object, according to the invention as set forth in claim 1, a front pillar structure of an automobile in which a front pillar garnish is mounted on an outer surface of a front pillar frame, wherein the front pillar garnish includes the front pillar frame. A garnish body that is exposed to the outside of the vehicle body and that has a base portion at one end fixed to the inner surface of the garnish body and a fastening portion at the other end detachably fastened to the outer surface of the front pillar frame. A member, and a concave portion fixed to the inner surface of the garnish main body portion and fitted or engaged with a convex portion of the front pillar frame, and a bending restraint which can be fixed to the front pillar frame in cooperation with the fastening portion. and a member, the front SL base portion sandwiched between the garnish main body portion and the bending prevention member Front pillar structure of a vehicle is proposed, wherein the door.

According to the configuration of claim 1, the front pillar garnish attached to the outer surface of the front pillar frame has a garnish main body portion that covers the front pillar frame and is exposed to the outside of the vehicle body, and a base portion on one end side is provided on the inner surface of the garnish main body portion. A fixing member, which is fixed and the fastening portion on the other end side is detachably fastened to the outer surface of the front pillar frame, and a concave portion which is fixed to the inner surface of the garnish main body and fits or engages with the projection of the front pillar frame. Since it has a flexure suppressing member that can be fixed to the front pillar frame in cooperation with the fastening portion, while securing the energy absorption performance at the time of collision by increasing the freedom of setting the cross-sectional shape of the front pillar frame, The front pillar garnish covers the front pillar frame to ensure a beautiful appearance. Furthermore, the bending when the garnish main body is pressed by a finger can be suppressed by the bending suppressing member, and the front pillar garnish is fitted or engaged with the concave portion of the bending suppressing member at the projection of the front pillar frame at the time of assembly. By doing so, it is possible to temporarily fix and facilitate the fastening operation of the fixing member. Here, if the front pillar frame is made of metal, the energy absorption performance at the time of collision can be enhanced by its ductility, and if the front pillar frame is made of carbon fiber reinforced resin, the weight of the upper part of the vehicle body can be reduced. Further, since the base portion is sandwiched between the garnish main body portion and the deflection suppressing member, both the deflection suppressing member and the fixing member can be firmly fixed in a limited space on the inner surface of the garnish main body portion.

FIG. 2 is a perspective view of a left door portion of the automobile. FIG. 2 is a partially exploded view in two directions in FIG. 1. FIG. 3 is a sectional view taken along line 3-3 in FIG. 2. Operation | movement explanatory drawing at the time of assembling a front pillar garnish.

  Hereinafter, an embodiment of the present invention will be described with reference to FIGS. Note that the front-rear direction, left-right direction (vehicle width direction), and up-down direction in this specification are defined with reference to an occupant seated in a driver's seat.

  As shown in FIGS. 1 and 2, a pair of left and right roof side rails 12, 12 are arranged in the front-rear direction along both sides in the vehicle width direction of a roof panel 11 of the vehicle. The front pillar frames 13, 13 forming the skeleton of the pair of left and right front pillars P, P extend forward and downward from the front end of the front pillar. A door 15 whose front edge is openably and closably supported by a front pillar lower 14 extending downward from the front end of the front pillar frame 13 is a sashless door, and its door glass 16 is formed of a front pillar frame 13, a roof side rail 12, and a center pillar. The glass seal 18 is fitted along the glass seal 18. The outer surface of the front pillar frame 13 is covered with a front pillar garnish 19 forming a decorative surface. The upper edge and the left and right side edges of the windshield 20 are supported by the front edge of the roof panel 11 and the left and right front pillar frames 13, 13, respectively.

  As shown in FIGS. 2 and 3, the front pillar frame 13 is composed of an outer panel 21 and an inner panel 22 formed by pressing a steel plate, and two joining flanges 21 a and 21 b of the outer panel 21 and two joining flanges of the inner panel 22. 22a and 22b are joined by welding to form a hollow closed section. The front pillar garnish 19 has a garnish body 23 made of a thin plate made of GFRP (glass fiber reinforced resin), for example, six bending suppressing members 24 made of a block-shaped synthetic resin member, and an L-shaped cross section of a metal plate. And a fixing member 25 that is bent in a bent shape. The six deflection suppressing members 24 are arranged at predetermined intervals along the longitudinal direction of the garnish main body 23.

  The garnish main body 23 having a gently curved arc-shaped cross section is disposed so as to cover the front surface of the front pillar frame 13, and the front surface of the deflection suppressing member 24 is bonded to the rear surface of the vehicle width direction inside portion with an adhesive 26. On the front surface of the outer panel 21 of the front pillar frame 13, a trapezoidal convex portion 21 c is projected forward, and a trapezoidal concave portion 24 a formed on the rear surface of the deflection suppressing member 24 is formed with a convex portion of the front pillar frame 13. Fit into the part 21c. By this fitting, the garnish main body 23 can be temporarily fixed to the front surface of the front pillar frame 13. A step-shaped notch 24b is formed in the vehicle width direction outer half of the front surface of the deflection suppressing member 24, and a vehicle width direction inner end of the rear surface of the deflection suppressing member 24 is cut out in a step shape to form a storage portion 24c. Is done.

  The fixing member 25 includes a base portion 25a, a corner portion 25b, a bent portion 25c, and a fastening portion 25d in this order from one end side to the other end side, and the front surface of the base portion 25a is in the vehicle width direction of the garnish main body 23. The adhesive 27 is adhered to the rear surface of the outer portion and the rear surface of the base portion 25a is adhered to the front surface of the notch 24b of the deflection suppressing member 24 with the adhesive 28. The fastening portion 25 d of the fixing member 25 abuts on the outer surface of the front pillar frame 13 in the vehicle width direction. A retainer 29 having a constant cross section made of a metal extruded material is superimposed on the outer surface of the fastening portion 25d of the fixing member 25 in the vehicle width direction, and six retainers 29, the fastening portion 25d of the fixing member 25, and the six pillars penetrating the front pillar frame 13. When the bolts 30 are screwed into six weld nuts 31 provided on the inner surface of the front pillar frame 13, the front pillar garnish 19 and the retainer 29 are fastened to the front pillar frame 13 together. This joint tightening operation is facilitated by the temporary fixing by fitting the deflection suppressing member 24 and the front pillar frame 13 described above. A rubber glass seal 18 for sealing between the retainer 29 and the door glass 16 is fitted and supported.

  The outer end of the windshield 20 in the vehicle width direction is bonded to the front surface of the joining flanges 21 a and 22 a on the inner side in the vehicle width direction of the front pillar frame 13 with an adhesive 33 via a dam rubber 32. In this state, the outer end in the vehicle width direction of the windshield 20 partially fits into the storage portion 24c of the deflection suppressing member 24 of the front pillar garnish 19.

  Next, the operation of the embodiment of the present invention having the above configuration will be described.

  The front pillar garnish 19 is formed by bonding the front surface of the base portion 25a of the fixing member 25 to the rear surface of the garnish main body 23 with an adhesive 27, and then bonding the front surfaces of the plurality of deflection suppressing members 24 to the rear surface of the garnish main body 23 with an adhesive. 26, and the front surfaces of the notches 24b of the plurality of deflection suppressing members 24 are bonded to the rear surface of the base portion 25a of the fixing member 25 with an adhesive 28 in advance.

  Further, the windshield 20 is bonded in advance to the front surfaces of the joining flanges 21a and 22a on the inner side in the vehicle width direction of the front pillar frame 13 with an adhesive 33. From this state, the front pillar garnish 19 is elastically deformed so as to open as shown by arrows A and A in FIG. When the outer surface is put on the outer surface in the direction of arrow B, the concave portions 24a of the deflection suppressing members 24 are fitted into the convex portions 21c of the front pillar frame 13, and the fastening portions 25d of the fixing member 25 are connected to the outer surface of the front pillar frame 13 in the vehicle width direction. , The front pillar garnish 19 is elastically temporarily fixed to the front pillar frame 13 without requiring a special fixing tool.

  Then, with the retainer 29 superimposed on the outer surface of the fastening portion 25d of the fixing member 25 in the vehicle width direction, the bolts 30 penetrating the retainer 29, the fastening portion 25d of the fixing member 25, and the front pillar frame 13 are connected to the front pillar frame. The front pillar garnish 19 and the retainer 29 are fastened together to the front pillar frame 13 by screwing to the weld nuts 31 provided on the inner surface of the 13, and then the glass seal 18 is attached to the retainer 29 while elastically deforming the glass seal 18. As described above, since the concave portion 24a on the inner surface of the deflection suppressing member 24 has a shape to be fitted or engaged with the convex portion 21c on the outer surface of the front pillar frame 13, the front pillar garnish 19 is attached to the front pillar frame 13. Not only can it be temporarily fixed more securely, and the workability of the fastening operation of the fastening portions 25d by the bolts 30 can be further improved, but also the positional deviation of the assembled front pillar garnish 19 can be reliably prevented.

  As described above, the front pillar garnish 19 is finally fixed to the front pillar frame 13 with the bolts 30 in a state where the front pillar garnish 19 is temporarily fixed without requiring a special fastening member. Not only can this be prevented, but also the work of fastening the front pillar garnish 19 to the front pillar frame 13 can be facilitated.

  Moreover, the retainer 29 for supporting the glass seal 18 for sealing between the door glass 16 and the front pillar frame 13 and the front pillar garnish 19 are fastened together by bolts 30... And the number of bolts 30 can be reduced.

  Further, when the front pillar garnish 19 is mounted on the front pillar frame 13, the front pillar garnish 19 covers the outer surface of the front pillar frame 13, and is aligned with the roof panel 11 and the roof side rail 12, so that the appearance is secured. As a result, not only is it possible to increase the degree of freedom in setting the cross-sectional shape of the front pillar frame 13 without considering the appearance, but also the energy absorption performance at the time of collision is ensured by the ductile metal front pillar frame 13. can do.

  Further, since the garnish main body 23 is a plate-shaped member made of glass fiber reinforced resin having lower rigidity than metal, there is a possibility that the garnish main body 23 is deformed so as to be dented when pressed by hand. According to this, since the deflection suppressing members 24 are arranged in the space between the garnish main body 23 and the front pillar frame 13, the deformation of the garnish main body 23 is suppressed by supporting the load by the bending suppressing members 24. You. Moreover, since the front pillar frame 13 is made of metal, it is less expensive than the front pillar P made entirely of carbon fiber reinforced resin.

  The fixing member 25 is made of metal, and a base portion 25a fixed to the inner surface of the garnish main body 23 and a fastening portion 25d fastened to the outer surface of the front pillar frame 13 are bent via a corner portion 25b to make L Since it has a V-shaped cross section, the front pillar frame 13 can be securely held and temporarily fixed securely in cooperation with the deflection suppressing members 24. In addition, the loosening of the front pillar garnish 19 due to the creep of the resin is fixed to a metal. It can be suppressed by the member 25.

  Further, since the fixing member 25 has the bent portion 25c between the fastening portion 25d and the corner portion 25b, the bent portion 25c allows the fastening portion 25d to follow the curved front pillar frame 13 to enable strong fastening, The bent portion 25c causes the corner portion 25b to move outward in the vehicle width direction with respect to the fastening portion 25d, and the width of the deflection suppressing member 24 is enlarged to the full width of the front pillar frame 13 by that amount to reduce the deflection of the garnish main body portion 23. It can be suppressed more effectively.

  Further, since the base portion 25a of the fixing member 25 is sandwiched between the notch 24b of the garnish main body 23 and the bending suppressing member 24, both the bending suppressing member 24 and the base 25a are located in a limited space on the inner surface of the garnish main body 23. Can be firmly fixed.

  By the way, when the deflection suppressing member 24 is sufficiently extended to the joining flanges 21a and 22a inside the front pillar frame 13 in the vehicle width direction, the garnish main body 23 is supported in a wide area, and the deflection is more effectively suppressed. However, there is a possibility that the effective width of the joining flanges 21a and 22a is reduced by the amount of the protrusion of the deflection suppressing member 24, and the support strength of the windshield 20 is reduced. However, according to the present embodiment, the storage portion 24c into which the vehicle width direction outer end of the windshield 20 is fitted is formed at the vehicle width direction inner end of the deflection suppressing member 24, so that the windshield 20 is joined. It can be firmly supported on the flanges 21a and 22a with a sufficient area.

  As described above, the embodiments of the present invention have been described. However, various design changes can be made in the present invention without departing from the gist thereof.

  For example, the front pillar frame 13 of the embodiment does not necessarily need to be made of metal, but can be made of a material such as CFRP.

  Although the door 15 of the embodiment is a sashless door, it may be a sash-mounted door.

  The garnish body 23 is not limited to GFRP (glass fiber reinforced resin), but may be CFRP (carbon fiber reinforced resin).

  In the embodiment, the rear surface of the deflection suppressing member 24 is in contact with the front surface of the front pillar frame 13. However, even if a slight gap exists between the rear surface of the suppressing member 24 and the front surface of the front pillar frame 13. good.

13 front pillar frame
1 9 front pillar guard Nissi Interview
2 1c convex part
2 3 garnish main body 24 bending prevention member 24a concave portion <br/> 25 fixing member 25a base portion
2 5d fastening part

Claims (1)

A front pillar structure of a vehicle, wherein a front pillar garnish (19) is mounted on an outer surface of a front pillar frame (13),
The front pillar garnish (19) includes a garnish body (23) that covers the front pillar frame (13) and is exposed to the outside of the vehicle body, and a base (25a) on one end side is an inner surface of the garnish body (23). And a fastening member (25d) on the other end side, which is fixed to the outer surface of the front pillar frame (13) so as to be detachable, and a fixing member (25) fixed to the inner surface of the garnish body (23). The front pillar frame (13) has a concave portion (24a) fitted or engaged with the convex portion (21c), and can be fixed to the front pillar frame (13) in cooperation with the fastening portion (25d). and a bending prevention member (24), said base portion (25a) Japanese a Rukoto sandwiched between the garnish main body (23) and the bending prevention member (24) The front pillar structure of the automobile to be.

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