JP2011225011A - Side structure of vehicle - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a side structure of a vehicle capable of controlling a deformed shape of a center pillar by inducing breakage at a prescribed portion when a load is applied from a vehicle side.SOLUTION: The side structure includes a rear side window 1 provided at a vehicle body side, and the center pillar 2 provided at a vehicle front side of the rear side window 1 and extending in a vehicle vertical direction. The center pillar 2 includes a center pillar inner panel 10 constituting a pillar internal surface, and a center pillar inner reinforcement 11 provided at the vehicle outside of the center pillar inner panel 10. The center pillar inner panel 10 located beneath a lower side 1a of the rear side window 1 is divided into an upper region A and a lower region B. In the lower region B of the center pillar inner panel 10, a first hole 12 is formed. In the lower region B, a constricted portion 13 is further formed at an upper position of the first hole 12.

Description

  The present invention relates to a vehicle side structure, and more particularly to a vehicle side structure applied to a three-door vehicle.

  In the vehicle body configuration of the 3-door vehicle, the rear side door is not provided as compared with the vehicle body configuration of the 5-door vehicle. For this reason, in a three-door vehicle, the center pillar can be formed with a wide setting, and a connecting structure with the quarter panel can be secured, so that the vehicle body has rigidity against an input load from the side of the vehicle (for example, (See Patent Documents 1 and 2).

On the other hand, a three-door vehicle has a vehicle body configuration similar to that of a five-door vehicle with a vehicle body configuration that is higher than that of the rear side window, and the rigidity balance between the upper and lower portions of the vehicle body is different.
Here, an advantageous deformed shape is that when a load is input from the side of the vehicle, the center pillar at a position directly below the side sill extending along the vehicle front-rear direction is broken at the lower position of the left and right door openings, The part and the upper part are deformed toward the vehicle interior side while maintaining the vertical outline. As a result, the bottom of the seat is pushed to move toward the passenger compartment, and the upper portion of the seat moves in parallel in the same direction.

JP-A-5-319301 JP-A-8-183475

However, in the side structure of the conventional three-door vehicle described above, since the rigidity of the center pillar portion is high, even if the fold is set just above the side sill, the middle portion and the upper portion of the center pillar have a vertical outline. There is a problem that the intermediate portion is likely to have a deformed shape (curve) that quickly enters the vehicle interior due to a difference in rigidity balance between the upper and lower portions.
In the conventional side structure described above, the center pillar is narrow due to the presence of the rear side window and the width in the front and rear of the vehicle is reduced. The center pillar is easily broken at the extended position of the horizontal line on the lower side of the rear side window, and it is difficult to achieve the deformation while maintaining the vertical outline of the upper part of the center pillar.

  The present invention has been made in view of such a situation, and an object of the present invention is to control the deformed shape of the center pillar by inducing bending at a predetermined position when a load is applied from the side of the vehicle. It is in providing the side part structure of a vehicle which can do.

  In order to solve the above-described problems of the prior art, the present invention includes a rear side window provided on a vehicle body side portion, and a center pillar provided on the vehicle front side of the rear side window and extending in the vehicle vertical direction. The center pillar includes a center pillar inner panel constituting an inner surface of the pillar, and a center pillar inner reinforcement provided on the vehicle outer side of the center pillar inner panel, and the center pillar is positioned below a lower side of the rear side window. In the side part structure of a three-door vehicle in which a pillar inner panel is divided into an upper part and a lower part, and a fragile part is provided in the lower part of the center pillar inner panel, the lower part of the center pillar inner panel, A second fragile portion is further provided above the fragile portion.

  In the present invention, the center pillar inner reinforcement is provided with a door switch wiring hole at the same height as the second weakened portion.

  In the present invention, the second weakened portion is a constriction formed by bending the center pillar inner panel.

  In the present invention, a quarter inner panel extending along the vehicle front-rear direction and a quarter member provided on the vehicle outer side of the quarter inner panel are disposed on the lower side of the rear side window.

As described above, a vehicle side structure according to the present invention includes a rear side window provided on a vehicle body side portion, and a center pillar provided on the vehicle front side of the rear side window and extending in the vehicle vertical direction. The center pillar includes a center pillar inner panel that constitutes an inner surface of the pillar, and a center pillar inner reinforcement that is provided on the vehicle outer side of the center pillar inner panel. The center pillar is located below the lower side of the rear side window. An inner panel is divided into an upper part and a lower part, and is for a three-door vehicle in which a weak part is provided at the lower part of the center pillar inner panel, and is the lower part of the center pillar inner panel, the weak part Since a second weakened portion is further provided at a higher position, the center just above the side sill is provided. When the part of the taper is broken, a second fold is induced in conjunction with this fold, and the part of the center pillar located above the second fold is deformed while maintaining the vertical contour line. Can do.
Therefore, according to the side part structure of the present invention, when a load is applied from the side of the vehicle, in addition to the fragile part of the lower part of the center pillar inner panel, it is possible to induce the fold of the intermediate part, The deformation shape of the center pillar can be controlled.

  In the present invention, the center pillar inner reinforcement is provided with a door switch wiring hole at the same height as the second fragile portion. Pillar breakage can be further promoted.

In the present invention, the second weakened portion is a constriction formed by bending the center pillar inner panel. Normally, the center pillar inner panel is formed in the same outer shape as the center pillar inner reinforcement and joined by spot welding. Therefore, not only the center pillar inner reinforcement but also the center pillar inner panel is used for door switch wiring. It was necessary to provide a hole, and it took time for processing.
According to the present invention, it is possible to reduce the weight of the center pillar inner panel due to the presence of the constriction that is the second weakened portion, and it is also unnecessary to form a hole for wiring the door switch on the center pillar inner panel. Further, since it is not necessary to pass the wiring through the hole, not only the cost can be reduced but also the workability can be improved.

  In the present invention, a quarter inner panel extending along the vehicle front-rear direction and a quarter member provided on the vehicle outer side of the quarter inner panel are disposed on the lower side of the rear side window. The rigidity of the center pillar part to be connected is improved and supported by the above two parts. Therefore, by receiving a load from the side of the vehicle around this connection part, the contour line whose upper part is vertical from the middle part of the center pillar It can be deformed while keeping

1 is a perspective view showing a part of a vehicle body to which a side structure of a three-door vehicle according to an embodiment of the present invention is applied. In FIG. 1, it is a perspective view which shows a part of vehicle body which removed the side body outer panel. It is the perspective view which looked at a part of vehicle body to which the side part structure of the three-door vehicle which concerns on embodiment of this invention is applied from the indoor side. In the side part structure of the three-door vehicle according to the embodiment of the present invention, it is a front view of the lower part of the center pillar inner panel constituting the center pillar as viewed from the indoor side. 1 is a cross-sectional view showing a center pillar at a location where a door switch is installed in a three-door vehicle to which a side structure according to an embodiment of the present invention is applied.

Hereinafter, the present invention will be described in detail based on illustrated embodiments.
1 to 5 show a side part structure of a vehicle according to an embodiment of the present invention.

  As shown in FIGS. 1 to 5, the side part structure according to the embodiment of the present invention is applied to a three-door vehicle, and mainly a rear side window 1 provided at an upper position on both left and right sides of the vehicle body, and the rear side window. 1, a center pillar 2 extending along the vehicle vertical direction, a side sill 3 having a closed cross-sectional shape extending along the vehicle front-rear direction at a lower position of the left and right door openings, and a vehicle of the side sill 3 A wheel house 4 provided at a rear position is provided, and a lower portion of the center pillar 2 is joined to intersect with the side sill 3. A side body outer panel 5 is provided outside the center pillar 2, the side sill 3, and the wheel house 4. The side body outer panel 5 covers the vehicle outside of the center pillar 2, the side sill 3, and the wheel house 4. Yes.

The side sill 3 includes a side body outer panel 5 on the outer side in the vehicle width direction, a side sill inner panel 6 on the inner side in the vehicle width direction, and a side sill strength 7 that extends in the vehicle front-rear direction and is provided inside to reinforce the side sill 3. The side body outer panel 5 and the side sill strength 7 are formed in a hat-shaped cross section in which an intermediate portion in the vertical direction protrudes outside the vehicle (opens inward in the vehicle width direction).
The side sill 3 has a closed cross-section by sandwiching the upper and lower flanges of the side sill strength 7 between the upper and lower flanges of the side body outer panel 5 and the side sill inner panel 6 and joining these three upper and lower flanges respectively.
Further, the rear end portion of the side sill 3 is joined to a wheel house 4 including a wheel house inner panel 4a and a wheel house outer panel 4b.

  As shown in FIGS. 1 to 3, the rear side window 1 of the present embodiment is formed in a rectangular shape in a side view including a lower side portion 1 a extending in the vehicle front-rear direction. A quarter inner panel 8 provided while extending along the vehicle front-rear direction inside the vehicle, and a quarter member 9 provided on the vehicle outer side of the quarter inner panel 8 are respectively disposed.

  On the other hand, as shown in FIGS. 1 to 5, the center pillar 2 of the present embodiment includes a side body outer panel 5 on the outer side in the vehicle width direction that forms the outer surface of the pillar, and a center pillar inner on the inner side in the vehicle width direction that forms the inner surface of the pillar. A panel 10 and a center pillar inner reinforcement 11 that extends in the vehicle vertical direction and is provided inside to reinforce the center pillar 2 are provided. The center pillar inner reinforcement 11 is provided on the vehicle outer side of the center pillar inner panel 10, and is formed in a hat-shaped cross section in which a middle portion in the front-rear direction protrudes outside the vehicle (opens inward in the vehicle width direction). The front and rear flanges 11 a are joined to the side body outer panel 5 and the flanges 5 a and 10 a of the center pillar inner panel 10, respectively.

  Further, the center pillar inner panel 10 positioned below the lower side 1a of the rear side window 1 of the present embodiment is divided into two regions consisting of an upper region A and a lower region B as shown in FIG. . Of these two regions, the lower region B of the center pillar inner panel 10 is provided with a first hole 12 that is a first weakened portion that lowers the rigidity of the center pillar inner panel 10. This first hole 12 is a hole for installing a speaker (not shown) mounted in the passenger compartment, and is located immediately above the side sill 3, and the presence of the first hole 12 When a load from the side of the vehicle is applied to the center pillar 2, the lower part of the center pillar inner panel 10 is configured to fold around a horizontal dotted line X 1 passing through the vertical center of the first hole 12 of the lower region B. Has been.

  Further, in the lower region B of the center pillar inner panel 10 of the present embodiment, at a position above the first hole 12, a constricted portion that is a second weakened portion that lowers the rigidity of the center pillar inner panel 10 13 is further provided. The constricted portion 13 is bent at the vehicle front side end portion 10a of the center pillar inner panel 10 so that the center pillar inner panel 10 enters the inner side of the panel (the vehicle rear side) from the outline C of the basic outer shape. It is formed by. When the load from the side of the vehicle is applied to the center pillar 2 due to the presence of the constricted portion 13, the lower portion of the center pillar inner panel 10 is folded around the dotted line X1 passing through the first hole 12 in the lower region B, In addition to this, the lower part of the center pillar inner panel 10 is configured to be folded about a horizontal dotted line X2 passing through the vertical center of the constricted part 13.

Moreover, on the vehicle front side of the center pillar inner reinforcement 11, as shown in FIGS. 4 and 5, the door switch wiring hole 14 is located at the same height as the constricted portion 13, which is the second fragile portion. Is provided. Due to the positional relationship between the door switch wiring hole 14 and the constricted portion 13, the center pillar inner panel 10 needs to have a door switch wiring hole corresponding to the hole 14 of the center pillar inner reinforcement 11. Will be lost.
As shown in FIGS. 1 and 5, the door switch 15 is a switch for turning on / off a room lamp or the like by reciprocating in conjunction with an opening / closing operation of a side door (not shown). It is attached to the attachment hole 16 provided in the side body outer panel 5 at the rear edge portion. The front end of the door switch 15 is disposed so as to protrude from the hole 14 of the center pillar inner reinforcement 11 toward the inside of the vehicle, and is connected to a harness (not shown).

Thus, in the side part structure of the three-door vehicle according to the embodiment of the present invention, the center pillar inner panel 10 positioned below the lower side 1a of the rear side window 1 is composed of the upper region A and the lower region B 2. In the lower region B of the center pillar inner panel 10, a first hole 12 that is a first fragile portion is provided, and a position above the first hole 12 is 2 is further provided, and the rigidity of the center pillar inner panel 10 is lowered at two locations in the lower region B. Therefore, when a load from the side of the vehicle is applied to the center pillar 2 or the like, the lower part of the center pillar inner panel 10 is centered on the dotted line X1 of the upper and lower center of the first hole 12 in the lower region B just above the side sill 3. The center pillar inner panel 10 located above the fold of the constricted portion 13 retains the vertical contour line C. Will be transformed.
Therefore, in the three-door vehicle to which the side part structure of the present embodiment is applied, when the load from the side of the vehicle is applied to the center pillar 2 or the like, the lower portion of the center pillar inner panel 10 is constricted with the first hole 12 and the constriction. It is possible to control the deformed shape of the center pillar 2 with an advantageous deformed shape by bending at two portions of the portion 13.

  Moreover, in the side part structure of this embodiment, since the constriction part 13 is provided in the vehicle front side edge part 10a of the center pillar inner panel 10, the center pillar inner panel 10 can be reduced in weight. Moreover, since the door switch wiring hole 14 provided on the vehicle front side of the center pillar inner reinforcement 11 is arranged at the same height as the constricted portion 13 of the center pillar inner panel 10, the center pillar inner panel 10 It is not necessary to provide a hole for wiring the door switch, and it is not necessary to drill a hole. Further, since it is not necessary to pass the wiring through the hole, not only the cost can be reduced but also the workability can be improved.

  While the embodiments of the present invention have been described above, the present invention is not limited to the above-described embodiments, and various modifications and changes can be made based on the technical idea of the present invention.

1 Rear side window 1a Lower side of rear side window 2 Center pillar 3 Side sill 4 Wheel house 5 Side body outer panel 6 Side sill inner panel 7 Side sill strength 8 Quarter inner panel 9 Quarter member 10 Center pillar inner panel 11 Center pillar inner reinforcement 12 First Hole (first vulnerable part)
13 Constricted part of the center pillar inner panel (second vulnerable part)
14 Door switch wiring hole 15 Door switch 16 Mounting hole A Upper area B Lower area C Contour line

Claims (4)

A rear side window provided on the side of the vehicle body, and a center pillar provided on the vehicle front side of the rear side window and extending in the vehicle vertical direction, the center pillar including a center pillar inner panel constituting an inner surface of the pillar; A center pillar inner reinforcement provided outside the vehicle of the center pillar inner panel, wherein the center pillar inner panel positioned below the lower side of the rear side window is divided into an upper part and a lower part, In the side part structure of a three-door vehicle in which a weak part is provided at the lower part of the panel,
A side part structure of a vehicle, wherein a second fragile portion is further provided in the lower portion of the center pillar inner panel at a position above the fragile portion.   2. The vehicle side structure according to claim 1, wherein the center pillar inner reinforcement is provided with a hole for a door switch wiring at the same height as the second weakened portion.   3. The vehicle side structure according to claim 1, wherein the second fragile portion is a constriction formed by bending the center pillar inner panel. 4.   The quarter inner panel extending along the vehicle front-rear direction and a quarter member provided on the vehicle outer side of the quarter inner panel are disposed on the lower side of the rear side window. The side part structure of the vehicle as described in.

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