JP6304200B2 - Rear body structure of automobile - Google Patents

Description

  The present invention relates to a rear vehicle body structure in which a lift gate for opening and closing a rear cargo compartment opening is provided.

Conventionally, there is a structure shown in FIG.
In other words, a rear cargo compartment opening surrounded by a rear header at the rear end of the roof panel 91, left and right rear pillars formed corresponding to the rear end of the rear side outer panel 92, and a rear end portion is provided, and the rear cargo compartment opening is opened and closed. And a roof spoiler 95 is provided at the upper end of the lift gate 93 corresponding to the upper part of the rear window glass 94, and the left and right sides of the lift gate 93 corresponding to the left and right sides of the rear window glass 94 are provided. A side spoiler 96 is provided, and the traveling wind flowing on the upper surface of the vehicle is separated by the roof spoiler 95 described above, and the traveling wind flowing on the side surface of the vehicle is separated by the side spoiler 96 described above.

In the conventional structure shown in FIG. 9, due to the rear end design, the lift gate 93 is tilted forward. Specifically, when the front end of the lift gate 93 is tilted forward to a position close to the rear suspension support member (so-called damper support member). Since the load of the lift gate 93 is applied to the rear pillar, it is necessary to enlarge the closed cross section of the rear pillar.
In addition, a damper having a normal structure and an actuator for a power lift gate unit are usually provided between the above-described rear pillar and the lift gate 93, and a lift gate inner panel is installed to attach such a damper or actuator. It is recessed on the lift gate outer panel side.

  Further, the above-mentioned lift gate 93 needs to support the rear window glass 94, and a predetermined space is required between the lift gate inner panel and the lift gate outer panel of the lift gate 93 in order to ensure rigidity. As a result, the outer surface corresponding to the damper mounting portion of the lift gate outer panel protrudes rearward of the vehicle, and as shown in FIG. 9, the side spoiler 96 is formed with a protrusion 97 protruding rearward of the vehicle. Become.

Originally, the above-described side spoiler 96 peels off the traveling wind at the portion of the ridgeline 96a extending in the vertical direction on the inner side in the vehicle width direction. In addition, vortices are generated, aerodynamic resistance is increased, and in addition, the appearance is deteriorated due to the formation of the protruding portion 97.
For this reason, conventionally, it has been required to ensure both rear end design and improvement of aerodynamic characteristics.

  Incidentally, Patent Document 1 discloses a rear vehicle body structure in which a side spoiler is provided along a side edge of a rear window glass. However, Patent Document 1 discloses that a lift gate is tilted forward. The technical idea of ensuring both rear end design and improving aerodynamic characteristics is not disclosed.

  Further, in Patent Document 2, the recess behind the rear overfender is eliminated, and the quarter panel is inclined inward toward the rear of the vehicle body, in other words, a convex part for running wind separation is formed at the rear of the vehicle body. Has been disclosed.

  However, the conventional structure disclosed in Patent Document 2 has a problem that the degree of freedom in design deteriorates.

JP 2015-48024 A JP 2010-254193 A

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a rear body structure of an automobile that can achieve both improvement of aerodynamic resistance by making the peeling position outward in the vehicle width direction and ensuring rear end design.

  The rear body structure of a vehicle according to the present invention is a rear body structure of a vehicle provided with a lift gate for opening and closing a rear luggage compartment opening, and the lift gate outer on both sides of the rear window glass of the lift gate is provided with the lift gate. A side spoiler extending in the vertical direction along the gate outer is provided, and a ridge line portion for separating the traveling wind extends in the vertical direction on the outer surface in the vehicle width direction of the side spoiler, and the vehicle width is larger than the protrusion of the ridge line portion. On the inner side in the direction, an extension extending rearward is formed.

According to the above configuration, by providing the ridge line portion on the outer side in the vehicle width direction of the side spoiler in the vehicle width direction outside of the separation position, it is advantageous for the separation of traveling wind, and as a result, the aerodynamic characteristics are improved. It is possible to improve the rear end design by forming the extension portion so as to extend inward in the vehicle width direction and rearward of the protrusion of the ridge line portion.
In short, it is possible to achieve both rear end design and improved aerodynamic characteristics.

  In one embodiment of the present invention, the upper end of the extension part of the side spoiler is connected to the end part in the vehicle width direction of the roof spoiler located at the upper end part of the lift gate.

  According to the said structure, integral design property can be ensured by the connection of both spoilers of a side spoiler and a roof spoiler.

  In one embodiment of the present invention, the lift gate inner panel corresponding to the side spoiler is provided with a storage recess for storing a damper or an actuator of the power lift gate unit.

  According to the above configuration, the damper or the actuator of the power lift gate unit can be properly stored in the storage recess, so that the support of the damper or the actuator is optimized, the appearance of the lift gate is ensured, and the closed cross section of the rear pillar is enlarged. Can be established.

  According to the present invention, there is an effect that it is possible to achieve both improvement of aerodynamic resistance by making the peeling position outside in the vehicle width direction and ensuring the rear end design.

Side view of a main part of an automobile provided with a rear body structure of the present invention Plan view showing the rear body structure of an automobile Perspective view showing the rear body structure of an automobile 3 is a cross-sectional view taken along line AA in FIG. 2 is a cross-sectional view taken along line BB in FIG. Side view of the main part on the left side of the vehicle showing only the configuration on the lift gate side CC sectional view taken on line CC of FIG. Sectional view showing the state where the actuator of the power lift gate unit is housed instead of the damper of the normal structure A perspective view showing a rear body structure of a conventional automobile

  In the rear body structure of an automobile provided with a lift gate for opening and closing the rear cargo compartment opening, the purpose of achieving both aerodynamic resistance improvement by making the separation position outside the vehicle width direction and ensuring the rear end design is The lift gate outer on both sides of the rear window glass of the lift gate is provided with a side spoiler extending in the vertical direction along the lift gate outer, and a ridge portion for traveling wind separation on the outer side surface of the side spoiler in the vehicle width direction Is extended in the vertical direction, and an extension part extending rearward is formed on the inner side in the vehicle width direction than the protrusion of the ridge line part.

An embodiment of the present invention will be described in detail with reference to the drawings.
FIG. 1 is a side view of a main part of an automobile provided with the rear body structure, FIG. 2 is a plan view showing the rear body structure of the automobile, and FIG. 3 shows a rear body structure of the automobile. 4 is a cross-sectional view taken along line AA in FIG. 3, and FIG. 5 is a cross-sectional view taken along line BB in FIG.

  1 to 5, a rear header portion at the rear end of the roof panel 10, left and right rear pillars 12 (see FIGS. 4 and 5) formed corresponding to the rear end of the rear side outer panel 11, and a rear end portion at the rear portion of the vehicle body. The rear luggage compartment opening 13 (see FIG. 4) surrounded by is formed.

  As shown in FIGS. 1 to 3, the above-described rear side outer panel 11 is formed with a quarter window opening 14 between a rear pillar 12 and an intermediate pillar (not shown), and below the opening 14. The rear fender 15 is integrally formed with the wheel arch portion 16 at the lower portion of the rear fender 15.

  As shown in FIGS. 4 and 5, the above-described rear pillar 12 has a rear pillar inner 17 (specifically, a rear pillar inner panel), a rear pillar reinforcement 18, and a rear pillar outer 19 (specifically, a rear pillar outer panel) fixedly joined to each other. In this embodiment, the rear pillar 12 is formed in a slant structure having a front and a rear shape corresponding to a forward tilt structure of a lift gate 30 described later. ing.

  Specifically, the front end of the rear pillar 12 or the front end of a lift gate 30 described later is configured to tilt forward to a position close to a rear suspension support member (so-called damper support member) above the rear wheel house inner.

  As shown in FIG. 4, a rear pillar trim 21 is provided on the inner side in the vehicle width direction of the above-described rear pillar inner 17, and is fitted to the joint flange portion 22 of the rear pillar inner 17, the rear pillar reinforcement 18, and the rear pillar outer 19. The lip portion 23 a of the fixed weather strip 23 is formed so as to seal between the joint flange portion 22 and the above-described rear pillar trim 21.

As shown in FIG. 4, a recessed portion 19 a that is recessed toward the front of the vehicle, that is, toward the rear pillar reinforcement 18, is formed along the longitudinal direction of the rear pillar 12 at the vehicle width direction intermediate portion of the rear pillar outer 19. At the same time, a rear end bent portion 11a of the rear side outer panel 11 is joined and fixed to the rear pillar outer end portion 19b located outside the recessed portion 19a in the vehicle width direction by spot welding means or the like.
Instead of the structure of the above-described embodiment in which the rear pillar outer 19 and the rear side outer panel 11 are formed of separate members, the elements 19 and 11 may be integrally formed of the same member.

A lift gate 30 is provided to cover the rear cargo compartment opening 13 shown in FIG.
As shown in FIGS. 4 and 5, the lift gate 30 is formed by integrating a lift gate inner 31 (specifically, a lift gate inner panel) and a lift gate outer 32 (specifically, a lift gate outer panel) by hemming. Therefore, a lift gate reinforcement 33 is interposed between the lift gate inner 31 and the lift gate outer 32.

Further, a rear window glass 34 is bonded and fixed to the back surface (rear side surface) of the lift gate outer 32 using an adhesive, and an opening portion for the rear window between the lift gate inner 31 and the lift gate outer 32 is provided. (Not shown) is configured to ensure vehicle rear visibility.
The lift gate 30 described above is formed in a slant structure (a forward tilt structure) having a front and a rear and a low state.

As shown in FIGS. 1 to 5, the lift gate outer 32 on both sides in the vehicle width direction of the above-described rear window glass 34 of the lift gate 30 includes a side spoiler extending in the vertical direction along the lift gate outer 32 of the portion. 35 is provided.
The side spoiler 35 is for separating the traveling wind flowing on the side surface of the vehicle.

As shown in FIG. 4, a clip 35b is integrally or integrally formed on the above-described side spoiler 35 via a clip seat 35a. With respect to the washer member 35c disposed on the vehicle front side of the lift gate outer 32, as shown in FIG. The side spoiler 35 is attached to a predetermined portion of the lift gate outer 32 by locking the clip 35b.
The above-described side spoiler 35 is made of synthetic resin, and the side spoiler 35 is lifted from the outer end in the vehicle width direction of the rear window glass 34 at the cross-sectional position along the line AA in FIG. 3 (see FIG. 4). The lift gate inner 31 and the lift gate outer 32 are formed so as to cover a range from the hemming portion 30a to the outer side in the vehicle width direction.

  As shown in FIGS. 1 to 3, the side spoiler 35 includes an upper portion 35 </ b> A that extends in the vehicle width direction on the upper side, and a lower side that extends rearward and downward from the vehicle width direction outer side portion or intermediate portion of the upper portion 35 </ b> A. The part 35B is integrally formed in an inverted L shape in a rear view of the vehicle.

  As shown in FIG. 4, the side spoiler 35 described above has a vehicle width direction outer side surface 35d and a vehicle wind direction peeling surface formed on the vehicle width direction inner side end of the vehicle width direction outer side surface 35d at the lower side portion 35B. An outer ridge line portion 35e, an extension portion 35f formed on the inner side in the vehicle width direction of the outer ridge line portion 35e, an inner ridge line portion 35g for crosswind separation formed on the inner end in the vehicle width direction of the extension portion 35f, An inner bent portion 35h that is bent inward in the vehicle width direction and forward from the inner ridge line portion 35g, and an outer bent portion 35i that is bent from the outer end in the vehicle width direction of the vehicle width direction outer side surface 35d toward the front of the vehicle. Are integrally formed of synthetic resin.

  In this embodiment, the angle formed by the outer bent portion 35i and the vehicle width direction outer surface 35d is set to 130 ° to 140 °, and the angle formed by the vehicle width direction outer surface 35d and the extension portion 35f is 150 °. The angle formed between the extension portion 35f and the inner bent portion 35h is set to 100 ° to 110 °, but each opening angle is not limited to this value.

  As shown in FIG. 1 to FIG. 3, the outer ridge line portion 35e for stripping the traveling wind extends in the up-down direction, and the above-described extension portion 35f is closer to the vehicle than the protrusion 35j (see FIG. 4) of the outer ridge line portion 35e. It is formed so as to extend downward and rearward in the width direction.

  Here, the width of the extension portion 35f in the vehicle width direction (in other words, the interval in the vehicle width direction between the ridge line portions 35e and 35g) is wide above the lower side portion 35B of the side spoiler 35, and below the vehicle. It is formed so as to become narrower toward the rear.

  By providing the outer ridge line portion 35e on the outer side surface 35d in the vehicle width direction of the side spoiler 35, the separation position is made outward in the vehicle width direction, thereby separating the traveling wind e1 (see FIG. 4) flowing on the vehicle side surface. As a result, the aerodynamic characteristics are improved, and the above-described extension portion 35f is formed to extend rearward in the vehicle width direction inner side than the projection 35j (see FIG. 4) of the outer ridge line portion 35e. Thus, the rear end design is improved.

As shown in FIGS. 1 to 3 and 5, the upper end of the extension 35 f of the side spoiler 35 extends to the upper end of the upper portion 35 </ b> A of the side spoiler 35 and widens, and the upper portion 35 </ b> A includes the upper end of the extension 35 f. Is connected to the vehicle width direction end of the roof spoiler 36 located at the upper end of the lift gate 30, and the design is integrated as a whole by connecting these spoilers (side spoiler 35 and roof spoiler 36). It is configured to do.
Here, the above-described roof spoiler 36 is for separating the traveling wind flowing on the upper surface of the vehicle.

  As shown in FIGS. 1 to 3 and 5, the roof spoiler 36 described above is composed of two members, a front member 37 and a rear member 38, and both ends in the vehicle width direction of the rear member 38 are curved. A forward extending portion 38a is formed extending forward of the vehicle.

The aforementioned front member 37 is provided between a pair of left and right front extending portions 38a, 38a of the rear member 38, and the front end of the front member 37 and the front end of the front extending portion 38a are flush with each other. While being continuous in the width direction, the upper surface of the front member 37 and the upper surface of the rear member 38 including the front extending portion 38a are formed to be continuous in the vehicle width direction and the vehicle front-rear direction.
And the upper part 35A of the side spoiler 35 is connected with the front extension part 38a in the rear member 38 of the roof spoiler 36.

  FIG. 6 is a side view of the main part on the left side of the vehicle showing only the configuration on the lift gate side, and FIG. The rear body structure of the vehicle of this embodiment is formed symmetrically or substantially symmetrically.

  As shown in FIGS. 4 and 7, a damper 40 (so-called strut damper) or an actuator 41 of a power lift gate unit (see FIG. 8) is provided on the lower gate 35 </ b> B of the side spoiler 35 and the lift gate inner 31 corresponding to the vehicle longitudinal direction. A storage recess 31a for storing a reference) is provided.

  The above-described storage recess 31a is formed by recessing the lift gate inner 31 toward the lift gate outer 32, that is, the vehicle rear side. Further, as shown in FIG. 4, the storage recess 31a is opposed to the recess 19a of the rear pillar outer 19 in the rear pillar 12 in the vehicle front-rear direction. The storage recess 31a and the recess 19a constitute a lift gate. When 30 is closed, a storage space 42 for storing the damper 40 or the actuator 41 of the power lift gate unit (see FIG. 8) is formed.

  Accordingly, the damper 40 or the actuator 41 of the power lift gate unit (see FIG. 8) is appropriately stored in the above-described storage recess 31a, the support of the damper 40 or the actuator 41 is optimized, and the appearance of the lift gate 30 is ensured. The rear pillar 12 is constructed so as to achieve an increase in the size of the closed section 20.

  As shown in FIG. 5 and FIG. 7, one mounting portion 40 a (rear pillar side mounting portion) of the above-described damper 40 is formed at the overlapping portion of the rear pillar outer 19 and the rear pillar reinforcement 18 via the damper mounting bracket 43. The other mounting portion (lift gate side mounting portion) of the damper 40 is supported by a predetermined portion of the lift gate inner 31 corresponding to the lower part of the lift gate 30 on the outer side in the vehicle width direction of the rear window glass 34. .

  As shown in FIG. 7, a damper disposition space L1 is provided between the front and rear of the one mounting portion 40a of the damper 40 and the storage recess 31a (a distance in the vehicle front-rear direction). A closed cross-sectional space L2 for securing the lift gate rigidity is provided between the front and rear of the lift gate outer 32 corresponding to the front and rear sides of the lift gate outer 32 and the front end of the side bent portion 35h of the side spoiler 35. An arrangement space L3 for the rear window glass 34 is provided, and an offset space L4 is provided between the outer ridge line portion 35e and the inner ridge line portion 35g corresponding to the rear end of the side spoiler 35.

  Further, as shown in FIG. 4, in the vehicle width direction, a predetermined amount is offset between the vehicle width direction outer end portion of the rear window glass 34 and the outer ridge line portion 35e of the side spoiler 35, that is, the peeling position.

FIG. 8 is a cross-sectional view corresponding to FIG. 4 showing a state where the actuator 41 of the power lift gate unit is housed instead of the damper 40 having the normal structure, and the damper 40 of FIG. 4 and the actuator 41 of FIG. Since other configurations are substantially the same as those in FIG. 4, the same reference numerals are given to the same portions in FIG. 8 and the detailed description thereof is omitted.
In the figure, an arrow F indicates the front of the vehicle, an arrow R indicates the rear of the vehicle, an arrow IN indicates the inner side in the vehicle width direction, and an arrow OUT indicates the outer side of the vehicle.

The illustrated embodiment is configured as described above, and the operation will be described below.
When the traveling wind e1 flows from the rear side outer panel 11 to the vehicle width direction outer side surface 35d of the side spoiler 35 as shown by the phantom line arrow in FIG. 4, the outer ridge line portion 35e located on the outer side in the vehicle width direction of the side spoiler 35 The side flow (traveling wind e1) of the vehicle body is immediately separated to prevent the traveling wind e1 from wrapping around the rear surface of the lift gate 30, and the generation of turbulence can be suppressed to improve the aerodynamic resistance. .

  As shown in FIG. 4, the outer ridge line portion 35e described above is located on the outer side in the vehicle width direction and is formed by a sharp projection 35j as shown in FIG. Even if the angle formed with the portion 35f is an obtuse angle (specifically, 150 ° to 160 °), a sufficient peeling effect of the traveling wind e1 can be ensured.

  On the other hand, when a cross wind acts on the vehicle, the cross wind tends to flow inward in the vehicle width direction from the extension 35f of the side spoiler 35, but the cross wind is peeled off at the inner ridge line portion 35g and turbulent downstream. The aerodynamic resistance can be improved by suppressing the flow.

  As described above, the rear vehicle body structure of the vehicle of the above embodiment is a rear vehicle body structure provided with the lift gate 30 for opening and closing the rear cargo compartment opening 13, and the rear window glass 34 on both sides of the lift gate 30. The lift gate outer 32 is provided with a side spoiler 35 extending in the vertical direction along the lift gate outer 32, and a ridge line portion (outer ridge line) for separating the traveling wind is formed on the outer side surface 35 d of the side spoiler 35 in the vehicle width direction. Part 35e) is extended in the vertical direction, and an extension part 35f extending rearward is formed on the inner side in the vehicle width direction than the projection 35j of the ridge line part (outer ridge line part 35e) (FIG. 3). (See FIG. 4).

According to this configuration, the above-described ridge line part (outer ridge line part 35e) is advantageous for the separation of the traveling wind due to the outer side in the vehicle width direction of the separation position in which the side spoiler 35 is provided on the outer surface 35d in the vehicle width direction. As a result, the aerodynamic characteristics can be improved, and the extension portion 35f is formed so as to extend rearward on the inner side in the vehicle width direction from the projection 35j of the ridge line portion (outer ridge line portion 35e). It is possible to improve the performance.
In short, it is possible to achieve both rear end design and improved aerodynamic characteristics.

  In one embodiment of the present invention, the upper end of the extension 35f of the side spoiler 35 is connected to the vehicle width direction end of the roof spoiler 36 located at the upper end of the lift gate 30 (FIGS. 1 to 3). FIG. 5 and FIG. 6).

  According to this configuration, an integrated design can be ensured by connecting both the spoilers of the side spoiler 35 and the roof spoiler 36.

  In one embodiment of the present invention, the lift gate inner panel (lift gate inner 31) corresponding to the side spoiler 35 is provided with a storage recess 31a for storing the damper 40 or the actuator 41 of the power lift gate unit. (See FIGS. 4 and 8).

  According to this configuration, since the damper 40 or the actuator 41 of the power lift gate unit can be appropriately stored in the storage recess 31a, the support of the damper 40 or the actuator 41 is optimized, the aesthetic appearance of the lift gate 30 is ensured, The enlargement of the closed cross section of the rear pillar 12 can be established.

In the correspondence between the configuration of the present invention and the above-described embodiment,
The ridge line part for running wind peeling of this invention corresponds to the outer side ridge line part 35e of the embodiment,
Similarly,
The lift gate inner panel corresponds to the lift gate inner 31,
The present invention is not limited to the configuration of the above-described embodiment.

  As described above, the present invention is useful for a rear vehicle body structure in which a lift gate that opens and closes a rear cargo compartment opening is provided.

13 ... Rear cargo compartment opening 30 ... Lift gate 31 ... Lift gate inner (lift gate inner panel)
31a ... Storage recess 32 ... Lift gate outer 34 ... Rear window glass 35 ... Side spoiler 35d ... Vehicle width direction outer side surface 35e ... Outer ridge line part (ridge line part)
35f ... Extension 35j ... Projection 36 ... Roof spoiler 40 ... Damper 41 ... Actuator (actuator of power lift gate unit)

Claims (3)

A rear body structure of an automobile provided with a lift gate that opens and closes a rear luggage compartment opening,
The lift gate outer on both sides of the rear window glass of the lift gate is provided with a side spoiler extending in the vertical direction along the lift gate outer,
On the outer side surface in the vehicle width direction of the side spoiler, a ridge line portion for running wind separation is extended in the vertical direction,
A rear body structure of an automobile, wherein an extension extending rearward is formed on the inner side in the vehicle width direction than the protrusion of the ridge line portion. The rear body structure of the automobile according to claim 1, wherein the upper end of the extension part of the side spoiler is connected to the end part in the vehicle width direction of the roof spoiler located at the upper end part of the lift gate. The rear vehicle body structure according to claim 1 or 2, wherein a storage recess for storing an actuator of a damper or a power lift gate unit is provided in a lift gate inner panel corresponding to the side spoiler.

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