JP2018192885A - Vehicle body rear structure - Google Patents

Abstract

To provide a vehicle body rear structure capable of inhibiting a fall in a vehicle width direction of a rear shock tower by dispersing a load, which stems from input of a rear shock tower attachment in the vehicle width direction, to a side body outer panel.SOLUTION: A rear shock tower 7 extends upward from the vicinity of a rear suspension support 6 formed in a rear wheel house 3. The rear shock tower 7 is joined with a side body outer panel 2 using a reinforcement.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a vehicle body rear structure in which a rear shock tower is provided in the vicinity of a rear wheel house, and relates to a vehicle body rear structure that prevents the rear shock tower from collapsing to the outside of the vehicle body.

  A rear hall house that covers the wheels is provided at the rear of the vehicle body, and a shock absorber and a spring constituting the suspension are accommodated inside the rear hall house. The rear wheel house protrudes from the left and right interiors of the rear part of the vehicle body. A shock absorber and an upper end of a spring are attached to the upper surface of the rear wheel house. The rear wheel house is provided with a shock absorber and a cover that shields the upper end of the spring, so-called rear shock tower (also called a strut tower). The rear shock tower is provided in the vicinity of the rear wheel house, and is disposed so as to protrude upward on the indoor side of the rear part of the vehicle body (see Patent Document 1).

JP 2010-18087 A

  In the rear shock tower, when the rear shock tower mounting portion is input in the vehicle width direction, a deformation vibration mode in which the rear shock tower is tilted in the vehicle width direction occurs in a frequency band near 180 Hz, and the vibration level becomes high.

  The present invention provides a vehicle body rear structure capable of suppressing the rear shock tower from falling in the vehicle width direction by dispersing the load generated by the input of the rear shock tower mounting portion in the vehicle width direction to the side body outer panel. For the purpose.

  In order to solve the above-described problems, the present invention is provided with a rear shock tower extending upward from the periphery of a rear suspension support portion formed in the rear wheel house, and the rear shock tower and the side body outer panel are connected by reinforcement. .

  According to the vehicle body rear structure of the present invention, the rear shock tower can be prevented from falling in the vehicle width direction.

It is a perspective view which cuts and shows the vehicle body right side rear part of the vehicle body rear part structure by embodiment of this invention. It is the perspective view which looked at the rear shock tower part of the vehicle body rear part structure by embodiment of this invention from the room inner side. It is a perspective view which expands and shows the reinforcement attachment part X of FIG. FIG. 4 is a cross-sectional view taken along line AA in FIG. 3. It is a perspective view which shows the modification of the reinforcement of FIG. FIG. 6 is a cross-sectional view taken along line B-B in FIG. 5.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.
1 to 4 are perspective views showing an embodiment of the present invention.

    1 to 4, a rear wheel house 3 covered with a side body outer panel 2 is provided at the rear of the vehicle body 1. The rear wheel house 3 includes a rear wheel and a rear wheel. The shock absorber and spring of the rear suspension for supporting are housed.

The rear wheel house 3 includes a rear wheel house outer panel 4 and a rear wheel house inner panel 5. The rear wheel house inner panel 5 is provided with a rear suspension support 6 such as the shock absorber and the spring. It has been.
On the rear wheel house inner panel 5, a quarter inner center force, so-called rear shock tower 7, extends upward from the periphery of the support portion 6. The rear shock tower 7 has side wall portions 71 provided on both sides of a wall surface portion 70 extending upward so as to cover the upper portion of the support portion 6 that supports the shock absorber and the spring, and has a U-shaped cross section. It is formed as follows. In the rear shock tower 7, the side wall 71 is joined to the quarter inner panel 8 constituting the inner wall of the side body outer panel 2.

On the upper surface of the rear wheel house outer panel 4, there is provided a belt-like reinforcing reinforcement 9 for preventing deformation of the side body outer panel 2, that is, so-called stickiness, and the reinforcing reinforcement 9 has one end 9a. Are joined to the upper surface of the rear wheel house outer panel 4 by spot welding, a flat portion 9b in the middle is brought into contact with the inner surface of the side body outer panel 2, and the other end portion 9c is again attached to the upper surface of the rear wheel house outer panel 4. They are joined by spot welding. A flat portion 9 b in the middle of the reinforcing reinforcement 9 is connected to the inner surface of the side body outer panel 2 via a sealer 11. The reinforcing reinforcement 9 is formed with a plurality of bead portions 90 in the longitudinal direction, and the one end portion 9a has a step corresponding to a step portion (not shown) that is lowered from the upper surface 4a of the rear wheel house outer panel 4. A portion 91 is formed.
In the flat surface portion 9b, for example, two positioning holes 92 for positioning when the sealer 11 is applied and a weight reducing hole 93 provided therebetween are formed. In the reinforcing reinforcement 9, a similar stepped portion 94 is formed at the other end portion 9c across the plane portion 9b to provide a gap with the upper surface 4a of the rear wheel house outer panel 4. The bonding position P of the flat surface portion 9b of the reinforcing reinforcement 9 is provided at a predetermined interval above the joint portion Q of the rear wheel house outer panel 4 with the side body outer panel 2.

  In order to prevent the wall surface portion 70 of the rear shock tower 7 from falling in the direction of the arrow in FIG. 4 between the back side of the flat surface portion 9b in the middle of the belt-like reinforcing reinforcement 9 and the back surface of the wall surface portion 70. The belt-like reinforcement 10 for preventing the falling-down is provided. The belt-like collapse-preventing reinforcement 10 has one end 10 a joined to the back side of the flat surface part 9 b in the middle of the reinforcing reinforcement 9 and the other end 10 b joined to the back side of the wall part 70 of the rear shock tower 7. Yes. As a result, an input load in the vehicle width direction of the mounting portion of the wall surface portion 70 of the rear shock tower 7 is received by the side body outer panel 2 by the reinforcement 10 for preventing the falling, whereby the wall surface of the rear shock tower 7 is received. Deformation due to the collapse of the portion 70 can be suppressed.

  5 and FIG. 6 are modifications of the band-shaped reinforcing reinforcement 9 shown in FIG. 3 and FIG. 4 with the same reference numerals assigned and the description of the same parts omitted. In this case, the belt-like reinforcing reinforcement 9 </ b> B is formed in a substantially L shape instead of the falling-down reinforcement 10. As a result, the reinforcing reinforcement 9B is composed of the flat surface portion 9b and one wall surface portion 95 extending in the vehicle width direction between the one end portion 9a, and the one end portion 9a is directly formed on the wall surface portion 70 of the rear shock tower 7. It is joined to the back side. In this way, the wall surface portion 95 functions as a reinforcement for preventing falling between the wall surface portion 70 of the rear shock tower 7 and the side body outer panel 2.

  As described above, according to the present invention, the rear shock tower 7 extending upward from the periphery of the support portion 6 of the rear suspension member provided in the rear wheel house 3 is provided, and the rear shock tower 7 and the side body outer panel 2 are connected to each other. Since they are coupled by force, the rear shock tower 7 can be prevented from falling down. Since the wall surface portion 70 of the rear shock tower 7 extending upward and the side body outer panel 2 also extending upward are connected by the reinforcement 10 or the wall surface portion 95 so as to function as a reinforcement for preventing the falling, the rear suspension The load in the vehicle width direction transmitted to the shock tower 7 is transmitted to the side body outer panel 2, and the rear shock tower 7 can be prevented from falling down.

  The reinforcement 9 includes an end portion 9a connected to the rear shock tower 7, a reinforcement 10 or a wall surface portion 95 serving as a vehicle width direction portion extending outward from the end portion 9a in the vehicle width direction, and the vehicle width direction portion. And a flat portion 9b that is a vehicle front-rear direction portion that extends continuously in the vehicle front-rear direction and is bonded to the side body outer panel 2 on the flat portion 9b that is the vehicle front-rear direction portion. Since the bonding portion is provided, the load in the vehicle width direction from the rear shock tower 7 can be transmitted to the side body outer panel 2 to prevent the rear shock tower 7 from falling in the vehicle width direction.

  Since the reinforcement 9 is provided with an end portion 9a extending from the vehicle front-rear direction portion and joined to the rear wheel house 3, the rigidity of the reinforcement 9 is increased and the seating surface for bonding in the vehicle front-rear direction portion is provided. The flat surface portion 9b is stably arranged.

  In the reinforcement 9, the reinforcement 10 serving as the vehicle width direction portion and the plane portion 9b serving as the vehicle longitudinal direction portion are formed of different plates, and the vehicle width direction outer end portion of the vehicle width direction portion is the Joined to the vehicle longitudinal direction portion, the vehicle width direction portion, the one side end portion 9a extending on one side in the vehicle longitudinal direction across the joint portion of the vehicle longitudinal direction portion, and the other extending in the vehicle longitudinal direction on the opposite side A side end 9c is formed. In the reinforcement 9, the one end 9 a and the other end 9 c are joined to the rear wheel house 3. The rigidity of the reinforcement 9 is increased, and the flat surface portion 9b serving as an adhesion seating surface in the vehicle front-rear direction portion is stably disposed.

  Since the bonding surface of the reinforcement 9 and the side body outer panel 2 is located above the joint between the side body outer panel 2 and the rear wheel house 3, the bonding is performed at a portion with a small shape change away from the lower end. As a result, the rigidity of the side body outer panel 2 is ensured, which is a countermeasure against unevenness.

  Since the upper end portion of the rear shock tower 7 is joined to a member that extends in the front-rear direction of the vehicle body and is connected to the front and rear pillars, for example, a quarter window member, the upper portion of the rear shock tower 7 can be prevented from falling down.

  Since the reinforcements 9, 9B, 10 are provided with the bead portion 90 in the longitudinal direction, the rigidity in the longitudinal direction can be improved. Since the planar portion 9b is provided with two positioning holes 92, it is possible to achieve the mounting position or positioning when applying the sealer 11.

  The present invention is not limited only to the above-described embodiment. For example, as in the first embodiment, the reinforcing reinforcement 9 and the belt-like collapse prevention reinforcement 10 are combined. It may be configured by a plate, or, as in the second embodiment, as a belt-like reinforcing reinforcement 9B, the entire shape is changed to a reinforcement 10 for preventing falling down, and the overall shape is formed into a substantially L-shape. It can also be comprised so that it may serve as both reinforcement | strengthening and falling down by comprising between 9b and the one wall part 95 extended in the vehicle width direction between the one end parts 9a. Further, the rigidity can be improved by using three or more plates. Further, the material is not limited to steel, and aluminum or synthetic resin can also be used. Needless to say, the present invention can be appropriately modified and implemented without changing the technical scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Car body 2 Side body outer panel 3 Rear wheel house 4 Rear wheel house outer panel 5 Rear wheel house inner panel 6 Support part 7 Rear shock tower 70 Wall surface part 71 Side wall part 8 Quarter inner panel 9 Reinforcement reinforcement 9a One end part 9b Flat part 9c Other end portion 10 Reinforcement for preventing falling 11 Sealer 90 Bead portion 91, 94 Step portion 92 Positioning hole 93 Reduction hole

Claims (6)

  A rear structure of a vehicle body comprising a rear shock tower extending upward from the periphery of a support portion of a rear suspension member provided in a rear wheel house, and the rear shock tower and a side body outer panel being connected by reinforcement.   The reinforcement is connected to the rear shock tower, a vehicle width direction portion extending outward in the vehicle width direction from the end portion, and a vehicle front and rear continuously from the vehicle width direction outer end portion of the vehicle width direction portion. The vehicle body rear structure according to claim 1, further comprising a vehicle front-rear direction portion extending in a direction, and an adhesive portion that is bonded to the side body outer panel is provided in the vehicle front-rear direction portion.   The vehicle rear structure according to claim 2, wherein the reinforcement is provided with an end portion that extends from the vehicle front-rear direction portion and is joined to a rear wheel house.   In the reinforcement, the vehicle width direction portion and the vehicle front-rear direction portion are formed of different plates, and an outer end portion in the vehicle width direction of the vehicle width direction portion is joined to the vehicle front-rear direction portion. A one-side end portion extending to one side in the vehicle front-rear direction and a second end portion extending in the vehicle front-rear direction on the opposite side are formed. The vehicle body rear structure according to claim 2, wherein the side end and the other end are joined to the rear wheel house.   5. The vehicle body according to claim 2, wherein an adhesion surface between the reinforcement and the side body outer panel is located above a joint portion between the side body outer panel and a rear wheel house. Rear structure.   The vehicle body rear structure according to any one of claims 2 to 5, wherein an upper end portion of the rear shock tower is joined to a member extending in the front-rear direction of the vehicle body and connected to the front and rear pillars.

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