JP2014180891A - Front part car body structure of open car - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a front part car body structure of an open car which can prevent or suppress backward or inward displacement of the upper part of a front piller in a car due to collision load and prevent or suppress torsion deformation of the front piller due to excessive opening of a door panel.SOLUTION: In a front part car body structure, in the lower part of a front piller, there is formed an enlarged part 3' which is enlarged toward the car front, car rear and car outside from the upper part connected to the lower part and is fixed to the front end part of a rocker member, and a hinge retainer 12 has a hinge attachment surface 12a having a bead 12e which has a shape corresponding to the enlarged part 3' and extends in the car forward/backward direction and a leg part 12d which is formed so as to be bent from the upper end of the hinge attachment surface 12a toward a piller inner 10. The hinge attachment surface 12a is fixed to a piller outer 9 so as to be superimposed on the enlarged part 3', and the leg part 12d is fixed to the piller inner 10. The piller outer 9 is made to intervene on the hinge attachment surface 12a, and a door hinge is fixed.

Description

  The present invention relates to a front vehicle body structure for an open car in which a hinge retainer is disposed in a front pillar, and a door outer is fixed to the hinge retainer via a pillar outer.

  As a front body structure of an automobile equipped with a conventional fixed ceiling panel, a structure in which a hinge retainer is disposed in a portion facing the front wheel of the front pillar and the facing portion is curved so as to follow the tire outer peripheral shape. There is a structure (see Patent Document 2) in which a hinge rein hose having a U-shaped cross section is disposed in a portion facing the front wheel of the front pillar (see Patent Document 1).

JP-A-10-244959 JP 2001-315664 A

  When the structure described in Patent Document 1 is employed in an automobile that does not support the upper part of the front pillar such as an open car, the lower cross-sectional area of the front pillar is smaller than the upper part, so that the lower part having a small cross-sectional area at the time of a vehicle collision As a starting point, there is a problem that the upper part of the pillar is displaced rearward or inward of the vehicle.

In order to secure the rigidity required for the front pillar of an open car by adopting the structure of Patent Document 2, it is necessary to increase the thickness of the pillar or pillar rein hose, or to dispose a large reinforcing member below the pillar. There are concerns that the cost and vehicle weight will increase and productivity will deteriorate.

The present invention has been made in view of the above-described conventional situation, and can prevent or suppress the front pillar upper portion from being displaced rearward or inward of the vehicle due to a collision load, and the deformation of the front pillar caused by excessive opening of the door. An object of the present invention is to provide a front body structure of an open car that can prevent or suppress the above.

In the present invention, a pillar inner and a pillar outer are coupled in a cylindrical shape, and a hinge retainer is disposed in a lower portion of a front pillar fixed to a front end portion of a rocker member, and a door hinge is attached to the hinge retainer. In the front car body structure of the open car fixed by interposing,
A lower part of the front pillar is formed with an enlarged part that extends from the upper part connected to the lower part to the vehicle front side and the vehicle outer side and is fixed to the front end of the rocker member, and the hinge retainer corresponds to the enlarged part. A hinge mounting surface having a shape, a U-shaped cross section having an upper side and a lower side bent from the upper end and the lower end of the hinge mounting surface to the pillar inner, and the hinge mounting surface being at least a part thereof Is fixed to the pillar outer so as to overlap with the enlarged portion, and a leg portion is extended to at least one of the upper and lower sides, the leg portion is fixed to the pillar inner, and the pillar outer is interposed on the hinge mounting surface. The door hinge is fixed.

  According to the present invention, at least a part of the hinge retainer having a hinge attachment surface having a shape corresponding to the enlarged portion is formed in the lower portion of the front pillar, and the enlarged portion is formed to extend forward and outward of the vehicle. The rigidity of the lower portion of the front pillar can be increased, and the occurrence of a break in rigidity due to the formation of the enlarged portion can be eliminated or suppressed by the hinge retainer. As a result, even in a vehicle that does not support the upper part of the pillar, such as an open car, the front pillar can be prevented or suppressed from falling backward or inward from the lower part as a starting point, and passenger protection performance can be improved.

  In addition, the pillar inner and pillar outer are bridged and connected at the enlarged part by fixing the leg part extended on at least one of the upper and lower sides of the hinge mounting surface to the pillar inner, improving the rigidity of the door mounting part of the front pillar Thus, it is possible to prevent or suppress the front pillar from being twisted and deformed due to over-opening of the door.

Furthermore, in the case of a vehicle frontal collision (hereinafter referred to as a frontal collision), the front wheel tire comes into contact with the enlarged part that is enlarged forward and fixed to the rocker member at an early stage, so that the frontal collision load can be quickly transmitted to the rocker member. . Further, since the hinge retainer has a U-shaped cross section and has a ridge line extending in the vehicle front-rear direction, the front collision load can be stably received by the rocker member, and unnecessary deformation of the front pillar can be suppressed.

Since such an effect can be realized by devising the shape of the hinge retainer and the like, the vehicle weight and cost can be reduced and productivity can be improved as compared with the case where a dedicated reinforcing member is provided.

It is a side view which shows typically the open car provided with the side part vehicle body structure by Example 1 of this invention. It is the side view which removed the pillar inner and looked at the hinge retainer attachment state in the right front pillar of the said structure from the vehicle inside. FIG. 3 is a cross-sectional front view (a cross-sectional view taken along line III-III in FIG. 2) in a state where the hinge retainer of the structure is attached. It is a figure for demonstrating the inclusion relation of the hinge retainer which concerns on this invention, and the hinge retainer which concerns on Example 1. FIG. FIG. 5 is a cross-sectional plan view (cross-sectional view taken along the line V-V in FIG. 2) of the structure having the hinge retail attachment state. It is the perspective view seen from the vehicle inside diagonal front of the said right side hinge retainer.

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

  1 to 5 are views for explaining a side body structure of an open car according to a first embodiment of the present invention. In this embodiment, front, rear, left, and right refer to the front of the vehicle from the vehicle interior. This means front, back, left, and right as viewed.

In the figure, 1 is an open car, and the skeleton of the open car 1 has the following configuration. A pair of left and right rocker members 2 and 2 extending in the longitudinal direction of the vehicle are disposed on both the left and right sides in the vehicle width direction, and although not shown, the front end portions and the rear end portions of the left and right rocker members 2 and 2 are not shown. The front cross member and the rear cross member are coupled to each other, and a floor panel is disposed on the cross member and the rocker member 2. The lower end of the front pillar 3 extending upward is coupled to the front end of the rocker member 2, and the lower end of the center pillar 4 extending upward is coupled to the rear. A rear end portion of the upper member 6 extending forward is coupled to the upper portion of the front pillar 3, and a front end portion of the quarter member 7 extending rearward is coupled to the upper end portion of the center pillar 4. Further, the midway portion of the quarter member 7 and the rear end portion of the rocker member 2 are coupled by a reinforcing member 8.

A door opening a is formed by the front pillar 3, the center pillar 4 and the rocker member 2, and a door 5 is disposed in the door opening a. The door 5 is supported on the front pillar 3 by upper and lower door hinges 5a and 5b so as to be openable and closable outward of the vehicle.

In addition, 19 is a front wheel, 20 is a rear wheel, each said frame | skeleton structural member is covered with the exterior panel, and the ceiling panel (not shown) is arrange | positioned above the compartment so that opening and closing is possible.

  The rocker member 2 is formed in a cylindrical shape extending in the vehicle front-rear direction by connecting the rocker outer 2a and the rocker inner 2b with flange portions 2c and 2d so as to form a hollow shape.

The front pillar 3 has a cross-sectional hat-shaped pillar outer 9 having an outer surface 9a and front and rear surfaces 9b and 9c, and a cross-sectional hat-shaped pillar inner 10 similarly having an inner surface 10a and front and rear surfaces 10b and 10c. Are formed by welding the flange portions 9d, 9e and 10d, 10e, and extending in the vertical direction. A pillar rein hose 11 is sandwiched between the pillar outer 9 and the pillar inner 10.

An enlarged portion 3 ′ is formed in the lower portion 3 a of the front pillar 3, that is, in a portion adjacent to the connecting portion to the rocker member 2. The enlarged portion 3 'is formed by enlarging the lower portion 3a from the upper portion 3b connected to the lower portion 3a toward the front of the vehicle, the rear direction, and the vehicle outer side. Specifically, the lower part of the outer side surface 9a of the pillar outer 9 has a front-rear dimension D that increases downward (see FIG. 2) and is positioned outward of the vehicle (outside in the vehicle width direction / see FIG. 3) downward. Thus, the outer inclined surface 9a ′ is inclined. The lower portion of the front surface 9b is a front inclined surface 9b 'that is inclined so that the lower portion is positioned in front of the vehicle, and the lower portion of the rear surface 9c is a rear curved surface 9c' that is bent so that the lower portion is positioned in the rear of the vehicle. (See FIG. 2).

Here, the enlarged portion 3 ′ in the present embodiment means a portion A shown in FIG. 2 in a vehicle side view, and a portion B shown in FIG. 3 in a vehicle front view.

The lower end portion 9f of the pillar outer 9 following the outward inclined surface 9a 'is welded and fixed to the upper edge portion of the rocker outer 2a of the rocker member 2 to form a coupling portion, and the lower end portion 10f of the pillar inner 10a is It is inserted into the rocker member 2 and clamped and fixed to the flanges 2c and 2d.

A hinge retainer 12 made of sheet metal is disposed in the enlarged portion 3 ′ of the front pillar 3. The hinge retainer 12 includes a hinge attachment surface 12a, front and rear flange portions 12b and 12c formed at the front and rear edges of the hinge attachment surface 12a, and upper and lower ends of the hinge attachment surface 12a. It has upper and lower beads 12g, 12h, which are formed to extend in the front-rear direction, and leg portions 12d bent from the upper bead 12g to the pillar inner 10a side.

Here, as shown in FIG. 4A, the hinge retainer according to the first aspect of the present invention is formed by bending from the upper end and the lower end of the hinge mounting surface 12a toward the pillar inner 10a, and the lower side portions 12g ', 12h. And a leg portion 12d is formed to extend on at least one of the upper and lower side portions 12g 'and 12h'.

As shown in FIG. 4 (b), the hinge retainer 12 according to the first embodiment forms the corner portion of the hinge mounting surface 12a and the upper and lower side portions 12g 'and 12h' into the frame shape. Thus, the upper and lower beads 12g and 12h are formed, and the leg portion 12d is formed to extend from the upper bead 12g. That is, the U-shaped cross section referred to in the present invention is a concept including the case where upper and lower beads 12g and 12h are formed on the upper and lower corner portions.

The hinge mounting surface 12a is set to a shape that substantially matches the shape of the enlarged portion 3 'portion of the outer surface 9a of the pillar outer 9, that is, a shape in which the front-rear direction dimension D increases toward the lower side. It is fixed by welding. The hinge mounting surface 12a is formed with a bead portion 12e protruding inward of the vehicle and extending in the vehicle front-rear direction, and a door hinge fixing nut member 13a is fixed.

The front flange portion 12 b substantially matches the shape of the enlarged portion 3 ′ portion of the front surface 9 b of the pillar outer 9. In other words, the front flange portion 12 b is inclined so as to be positioned forward as it goes downward, and is fixed to the front surface 9 b of the pillar outer 9 by welding. Similarly, the rear flange portion 12 c substantially matches the shape of the enlarged portion 3 ′ portion of the rear surface 9 c of the pillar outer 9. That is, the rear flange portion 12 c is curved so as to be located rearward as it is below, and is fixed to the rear surface 9 c of the pillar outer 9 by welding.

The leg portion 12d extends from the pillar outer 9 side to the pillar inner 10 side, and a fixing nut member 14a is fixed to a mounting flange 12f that is bent at the tip thereof. The mounting flange 12f is a bolt 14. And the nut member 14a are fastened and fixed to the inner side surface 10a of the pillar inner 10.

Here, when viewed from the side of the vehicle, the hinge retainer 12 substantially overlaps with the enlarged portion A (see FIG. 2), and the lower edge of the hinge mounting surface 12a overlaps with the enlarged portion B (see FIG. 2). (See FIG. 3).

The lower door hinge 5b is disposed at the hinge retainer 12 portion of the pillar outer 9, and the door hinge 5b is fastened and fixed to the hinge mounting surface 12a by a bolt 13 and the nut member 13a. Yes. The lower door hinge 5b and the upper door hinge 5a support the door 5 so that it can be opened and closed.

According to the present embodiment, the lower portion 3a of the front pillar 3 is formed with an enlarged portion 3 'that extends in the front, rear, and vehicle outer sides, and the hinge mounting surface 12a having a shape corresponding to the enlarged portion 3' is formed. Since the hinge retainer 12 is arranged and fixed so as to overlap the enlarged portion 3 ', the rigidity of the lower portion 3a of the front pillar 3 can be increased, and the formation of the enlarged portion 3' causes a break in rigidity. Can be suppressed by the hinge retainer 12. As a result, even in a vehicle such as an open car that does not support the upper part of the pillar, the front pillar 3 can be prevented or suppressed from falling backward or inward from the lower part 3a as a starting point, and passenger protection performance can be improved. .

  Further, the pillar inner 10 and the pillar outer 9 are bridged and connected by the enlarged portion 3 'by fixing the leg portion 12d bent at the upper end of the hinge mounting surface 12a to the inner side surface 10a of the pillar inner 10, so that the door of the front pillar 12 is connected. The rigidity around the mounting portion can be increased, and thereby the front pillar 3 can be prevented or suppressed from being twisted and deformed due to the door 5 being opened excessively.

Furthermore, at the time of a frontal collision of the vehicle, since the tire of the front wheel 19 comes into contact with the enlarged portion 3 ′ that is enlarged forward and fixed to the rocker member 2 at an early stage, the frontal collision load can be quickly transmitted to the rocker member 2. Further, since the hinge retainer 12 has a lower bead 12g, 12h on the hinge mounting surface 12a on the upper corner and the lower corner portion extending in the vehicle front-rear direction, the lower ridges 12g, 12h are shown in FIG. As compared with the case of the simple U-shape shown in a), the front collision load can be received more stably by the rocker member 2, and unnecessary deformation of the front pillar 3 can be suppressed.

Such effects can be realized by devising the shape of the lower part 3a of the front pillar 3 and the hinge retainer 12, etc., so that the vehicle weight and cost can be reduced as compared with the case where a dedicated reinforcing member is provided, and the productivity is improved. Can be improved.

In the above embodiment, the leg portion 12d is formed at the upper end portion of the hinge mounting surface 12a. However, the leg portion 12d 'may be formed at the lower end portion, or may be formed at both the upper end portion and the lower end portion. . When both are provided, the rigidity of the lower part 3a of the front pillar 3 can be further increased.

DESCRIPTION OF SYMBOLS 1 Open car 2 Rocker member 3 Front pillar 3 'Enlarged part 3a Lower part 3b of front pillar Upper part 5 Door 5b Door hinge 9 Pillar outer 10 Pillar inner 12 Hinge retainer 12a Hinge mounting surface 12d Leg part 12e Bead

Claims (1)

A pillar inner and a pillar outer are coupled in a cylindrical shape, a hinge retainer is disposed in the lower part of the front pillar fixed to the front end of the rocker member, and a door hinge is fixed to the hinge retainer via the pillar outer. In the front car structure of the open car
In the lower part of the front pillar, an enlarged part is formed which expands from the upper part connected to the lower part to the vehicle front side and the vehicle outer side and is fixed to the front end part of the rocker member,
The hinge retainer has a U-shaped cross section having a hinge mounting surface having a shape corresponding to the enlarged portion, and an upper and lower side bent from the upper and lower ends of the hinge mounting surface toward the pillar inner. age,
Fixing the hinge mounting surface to the pillar outer so that at least a part of the hinge mounting surface overlaps the enlarged portion, extending a leg portion to at least one of the upper and lower sides, and fixing the leg portion to the pillar inner;
A front vehicle body structure for an open car, wherein the door hinge is fixed with the pillar outer interposed on the hinge mounting surface.

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