JP3082602B2 - Rear parcel panel reinforcement structure - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcement structure for a rear parcel panel of a motor vehicle, and more particularly to a reinforcement structure around a mounting portion of a trunk hinge bracket.

[0002]

2. Description of the Related Art FIG. 5 shows the structure of a conventional rear parcel panel. A rear parcel panel 1 is formed by joining a parcel center 1A and a parcel side 1B, and is formed by bending the side edge of the parcel side 1B. It is joined and fixed to the rear pillar inner 10 via the flange 1a.

The front wall 2 of the rear parcel panel 1 functions as a seat back support panel for a rear seat (not shown).
A concave portion 3a is formed at the rear end of the upper wall 3 in the vehicle width direction, and a rear waist panel 4 is joined so as to close the concave portion 3a. A closed cross-section 5 extending in the vehicle width direction is formed with the recess 3a to form a frame structure in the vehicle width direction at the rear waist portion.

[0004] On both sides of the rear waist panel 4, a front extending portion 6 joined to the upper wall 3 of the parcel side 1B is provided.
A mounting hole 7 for a trunk hinge bracket (not shown) is formed in a portion where the upper wall 3 and the front extension portion 6 overlap.

In this trunk hinge bracket, a bulge supporting a hinge arm is inserted into the mounting hole 7 from below, and the trunk hinge bracket is fastened and fixed to the back surface of the overlapped portion with a bolt and a nut.

A rear seat belt (not shown) is provided between the front edge of the rear parcel panel 1 and the overlapped portion of the front extension 6 so as to be close to the front edge of the front extension 6. A mounting hole 8 for the retractor is formed, and a seat belt retractor is inserted into the mounting hole 8 from above and fastened and fixed to an edge of the hole.

A speaker mounting hole 9 (not shown) is formed in the upper wall 3 of the parcel center 1A adjacent to the mounting hole 8, and the speaker is inserted into the mounting hole 9 from above and fixed. ing.

This similar structure is disclosed, for example, in Japanese Utility Model Laid-Open No. 1-579.
No. 49, Japanese Utility Model Laid-Open No. 2-69558, and the like.

[0009]

SUMMARY OF THE INVENTION Rear parcel panel 1
Since the relatively large mounting hole 8 for the seat belt retractor is formed in front of the trunk hinge bracket mounting portion of the upper wall 3, the rigidity of the trunk hinge bracket mounting portion of the upper wall 3 is reduced.

In order to compensate for this reduction in rigidity, it is conceivable to join a rainforce around the mounting hole 8. However, since the upper wall 3 is flat, it is similar to the rainforce 11 joined around the mounting hole 9 for the speaker. A rainfight is joined and arranged over a wide area around the mounting hole 8, or a rainfose 11 joined around the mounting hole 9 for the speaker is extended over a wide area around the mounting hole 8 for the seat belt retractor. In any case, it is unavoidable that the rainforce becomes large and disadvantageous in weight and cost.

In addition, when the rainforce becomes large in size, the space for disposing other functional components such as electronic control components disposed behind the upper wall 3 of the rear parcel panel 1 is restricted, and the function space is reduced. This causes a problem that the layout of parts becomes difficult.

Accordingly, the present invention provides a reinforcement structure for a rear parcel panel which can reduce the size of the rainforce as much as possible and can increase the rigidity of the mounting portion of the trunk hinge bracket on the upper wall of the rear parcel panel.

[0013]

According to a first aspect of the present invention, a trunk hinge bracket is fixedly connected to a back surface of a portion where a side upper wall of a rear parcel panel and a rear waist panel overlap, and a front edge of the rear parcel panel is provided. In a structure in which a mounting hole for a seatbelt retractor is formed between a portion and the overlapped portion, a closed section extending in the vehicle width direction by joining a parcel reinforcement to the rear side of a front edge of the rear parcel panel. Forming a portion, and straddling the lower side of the mounting hole in a substantially U-shape, arranging a strip-shaped rainforce in the front-rear direction and joining the rear end to the back surface of the overlapped portion, while the front end is The rear parcel panel was sandwiched and joined to the joint between the upper wall and the parcel reinforcement, and was placed in the closed section to protrude, and the front end was abutted against the back of the front wall of the rear parcel panel. It is a symptom.

According to a second aspect of the present invention, a flange is formed downward on both side edges of a portion provided outside the closed cross section of the strip-shaped reinforce according to the first aspect, and is disposed in the closed cross section. It is characterized in that a bead portion is formed in the front and rear direction at the center of the portion to be provided.

[0015]

According to the first aspect of the present invention, the rear end portion of the rainfight arranged in the front-rear direction with the lower side of the mounting hole straddling in a substantially U-shape is overlapped with the rear waist panel on the side upper wall of the rear parcel panel. It has a multi-panel structure and is joined to the high rigidity overlapping part, and the front end is sandwiched and joined to the joint between the upper wall of the front edge of the rear parcel panel and the parcel reinforcement which is arranged behind the rear wall Then, the front edge protrudes into the closed cross-section constituting the vehicle width direction skeletal structure, and the front end is joined to the back surface of the front wall of the rear parcel panel, and firmly attached to the front and rear ends of the closed cross-section. Therefore, even if the reinforce is in the form of a strip, the reinforce functions as a beam connecting the front and rear high-rigidity parts across the mounting hole and applies the load acting on the trunk hinge bracket mounting part. Closure And it is possible to rationally distributed strain on parts, it is possible to increase further the strength and rigidity of the mounting hole formation portion.

Further, since the rainfose is formed in the shape of a strip and is disposed in the front-rear direction, the size of the rainfose can be reduced and the area occupied by the rainfose can be reduced to the side of the vehicle body. A sufficient space for disposing various functional components disposed on the back side of the wall can be secured, and the degree of freedom in the layout of disposing the functional components can be increased.
Moreover, weight reduction and cost reduction can be realized.

According to the second aspect, a flange formed downward on both side edges of a portion provided outside the closed cross-section of the strip-shaped rainforce, and a central portion of the portion provided inside the closed cross-section. Since the bending rigidity and torsional rigidity of the reinforcement are increased by the bead portion formed in the front-rear direction,
The beam function of the rainforce can be further enhanced, and the strength and rigidity of the mounting hole forming portion can be further increased.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings, in which the same reference numerals are given to the same parts as in the above-mentioned conventional construction.

In FIGS. 1 and 2, the parcel center 1A
The rear parcel panel 1 formed by joining the parcel side 1B and the parcel side 1B is joined to a rear pillar inner 10 (see FIG. 4) via a bent flange 1a on the side edge of the parcel side 1B.

A rear waist panel 4 is joined so as to cover a concave portion 3a formed at the rear end of the upper wall 3 of the rear parcel panel 1, and a vehicle width is formed by a convex portion 4a formed on the rear waist panel 4 and the concave portion 3a. A closed cross-section 5 extending in the vehicle width direction is formed at the rear waist portion to form a frame structure in the vehicle width direction.

The front extending portions 6 formed on both sides of the rear waist panel 4 are joined to the upper wall 3 of the parcel side 1B to form a multi-panel structure, and pivotally support the hinge arm 21 of the trunk hinge bracket 20. Bulging part 20a
Is inserted from below into the mounting hole 7 formed in the overlapping portion, and the trunk hinge bracket 20 is fastened and fixed to the back surface of the overlapping portion with a bolt / nut 22.

Behind the front edge of the rear parcel panel 1, flanges 12a at the front and rear edges of a parcel reinforcement 12 are joined to the back of the front wall 2 and the back of the upper wall 3, respectively. A closed cross-section 13 extending in the width direction is formed to form a vehicle width direction frame structure.

In this embodiment, the area of the closed section 13 is enlarged by bulging the front edge portion upward.

A mounting hole 8 for the seat belt retractor 23 is provided between the overlapped portion of the upper wall 3 and the front extending portion 6 and the closed cross section 13 near the front edge of the front extending portion 6. A strip-shaped rainfall 14 is arranged in the front-rear direction so as to straddle the lower side of the mounting hole 8 in a substantially U-shape.

The rear end of the rainforce 14 is
And the front end of the front extending portion 6 is fixed by spot welding to the back surface of the overlapped portion.

The central portion of the rainfour 14 is clamped to a joint portion between the upper wall 3 of the front edge portion of the rear parcel panel 1 and the flange 12a at the rear of the parcel reinforce 12 and joined by spot welding to close. It is arranged to project into the cross-sectional portion 13 and has its front end abutted against the back surface of the front wall 2 of the rear parcel panel 1 and is joined by spot welding. The joint between the central portion and the front end has a flat shape. That is, it is formed so as to extend linearly in the front-rear direction.

A seat belt retractor 23 for a rear seat is inserted into the mounting hole 8 from above, and a hook 24a formed at the front end of the bracket 24 is engaged with the locking hole 15 formed at the front edge of the mounting hole 8. And the bracket 24
The rear end of the front extension 6 is fastened and fixed to the joint between the front end of the front extension 6 and the rear end of the upper wall 3 and the reinforcement 14 by bolts and nuts 25. In FIG. 1, reference numeral 23a denotes a seat belt wound around the seat belt retractor 23.

According to the structure of the above-described embodiment, the rear end of the reinforcement 14 arranged in the front-rear direction with the lower side of the mounting hole 8 for the seat belt retractor 23 straddling in a substantially U-shape,
The front extension portion 6 of the rear waist panel 4 is overlapped on the upper wall 3 of the parcel side 1B and joined to a highly rigid portion having a multi-panel structure, and the front end of the reinforcement 14 is connected to the rear parcel panel 1 Of the front edge of the parcel reinforcement 12 and the flange 12a at the rear of the parcel reinforcement 12 so as to protrude into the closed cross-section 13 constituting the vehicle width direction frame structure of the front edge. It is arranged, and the front end portion is joined to the back surface of the front wall 2 of the rear parcel panel 1 and is firmly joined to the front and rear ends of the closed cross section 12. Also, the rain force 14 functions as a beam connecting the front and rear high rigidity portions across the mounting hole 8 so that the load acting on the mounting portion of the trunk hinge bracket 20 is rationally distributed to the closed section 13. Bets are made, it is possible to increase further the strength and rigidity of the mounting hole 8 formed portion. In particular, since the space between the center joint and the front end joint of the rainforce 14 is flat, it functions effectively as a beam.

As a result, it is possible to stabilize the opening / closing operation of the trunk lid by increasing the mounting rigidity of the trunk hinge, and also to avoid a deviation in the parting between the trunk lid and the periphery of the trunk opening, thereby providing a sense of quality and quality. Reliability can be improved.

Further, since the rainforce 14 is formed in a strip shape and is disposed in the front-rear direction on the back side of the upper wall 3 of the parcel side 1B, the size of the rainforce 14 can be reduced and the area occupied by the arrangement can be reduced. By making it the side of the vehicle body,
A space for disposing functional components such as electronic components (not shown) disposed on the rear side of the upper wall 3 of the rear parcel panel 1 can be sufficiently secured, and the degree of freedom in disposing layout of the functional components can be increased. .

FIGS. 3 and 4 show different embodiments of the rainforce 14, wherein a flange 14a is bent downward at both side edges of a portion of the rainforce 14A disposed outside the closed cross-section 13. FIG. A bead portion 14b protruding downward is formed at the center of a portion provided in the closed section 13 in the front-rear direction.

Also in this embodiment, the reinforcement 14A is formed so as to extend linearly from the center joint to the front end joint. On the other hand, the upper wall 3 of the parcel side 1B is embossed into a cross-sectional shape corresponding to the portion where the bead portion 14b is formed, and the bead portion 14b is formed between the upper wall 3 and the rear flange 12a of the parcel reinforcement 12. Polymerized and joined by spot welding.

Therefore, according to this embodiment, since the bending rigidity and the torsional rigidity of the strip-shaped reinforce 14A are enhanced by the flanges 14a on the both side edges and the bead portion 14b in the center, the beam function of the reinforce 14A is improved. Further, the strength and rigidity of the portion where the mounting hole 8 is formed can be further increased.

In the above embodiment, the front edge of the rear parcel panel 1 is bulged upward to enlarge the area of the closed cross section 13, but the front edge is formed flat. Of course, it is good.

[0035]

As described above, according to the present invention, the following effects can be obtained.

According to the first aspect, the lower side of the mounting hole for the seat belt retractor provided on the upper side wall of the rear parcel panel in front of the mounting portion of the trunk hinge bracket extends in a substantially U-shape in a strip shape. The rear fence is arranged in the front-rear direction, and the rear end of the rain fence is joined to a high rigidity overlapped portion having a multi-panel structure with an upper wall of a rear parcel panel and a front extension of a rear waist panel,
The front end is clamped and fixed to the joint between the upper wall of the front edge of the rear parcel panel and the parcel reinforcement which is arranged on the back side of the rear parcel panel. Since it is arranged so as to protrude, and the terminal portion is abutted against the back surface of the front wall of the rear parcel panel and joined to the front and rear ends of the closed cross-section portion, it is firmly joined to the front and rear ends of the closed cross-section portion. Even if it is plate-shaped, the rainforce functions as a beam connecting the front and rear high-rigidity portions across the mounting hole, so that the load acting on the trunk hinge bracket mounting portion is rationally distributed and loaded to the closed cross-section. The strength and rigidity of the mounting hole forming portion can be further increased.

As a result, not only can the mounting rigidity of the trunk hinge be increased and the opening / closing operation of the trunk lid can be stabilized, but also the deviation of the parting between the trunk lid and the periphery of the trunk opening can be avoided, and the sense of quality and quality can be improved. The reliability can be further improved.

Further, since the rainfose is formed in the shape of a strip and is disposed in the front-rear direction, the size of the rainfose can be reduced, and the area occupied by the rainfose can be reduced to the side of the vehicle body. A sufficient space for disposing various functional components disposed on the back side of the wall can be secured, and the degree of freedom in the layout of disposing the functional components can be increased.

In addition, by reducing the size of the rainforce, the weight and cost of the vehicle body can be reduced.

According to the second aspect, a flange formed downward on both side edges of a portion disposed outside the closed cross-section of the strip-shaped rainfall, and a central portion of the portion disposed inside the closed cross-section. Since the bending rigidity and the torsional rigidity of the reinforcement are enhanced by the bead portions formed in the front-rear direction, the beam function of the reinforcement can be further enhanced, and the strength rigidity of the mounting hole forming portion can be further enhanced.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a perspective view of the embodiment.

FIG. 3 is a perspective view showing a different example of a rainforce.

FIG. 4 is a sectional view taken along line AA of FIG. 3;

FIG. 5 is a perspective view showing a conventional structure.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Rear parcel panel 2 Front wall 3 Upper wall 4 Rear waist panel 6 Front extension part 8 Mounting hole for seat belt retractor 12 Purcell rainforce 13 Closed section 14 Rainforce

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁷ , DB name) B62D 25/08

Claims (2)

(57) [Claims] 1. A trunk hinge bracket is connected and fixed to a back surface of an overlapping portion between a side upper wall of a rear parcel panel and a rear waist panel, and a seat belt retractor is provided between a front edge portion of the rear parcel panel and the overlapping portion. In a structure in which a mounting hole is formed, a parcel reinforcement is joined to the rear side of the front edge of the rear parcel panel to form a closed cross-section extending in the vehicle width direction, and While the side straddling in a substantially U-shape, a strip-shaped rain fence is arranged in the front-rear direction and the rear end is joined to the back surface of the overlapped portion, while the front end is the upper wall of the rear parcel panel and the parcel rain fence. The rear parcel panel reinforcement structure is characterized in that it is sandwiched and joined to the joint portion of the rear parcel panel and protrudes into the closed cross-section, and the front end portion is abutted against the back surface of the front wall of the rear parcel panel and joined. Build. 2. A flange is formed downward on both side edges of a portion disposed outside the closed cross section of the rainforce,
2. The reinforcing structure for a rear parcel panel according to claim 1, wherein a bead portion is formed in a front-rear direction at a central portion of a portion provided in the closed cross section.