JPH10203415A - Rear body structure of automobile - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate the exchanging work of parts of automobile, and to improve the strength and rigidity of a rear body by forming a working hole for loading the parts of automobile on a shelf part of an upper wall to be arranged on a cabin side of a strut member of approximately U-shaped section to form a closed section part. SOLUTION: A strut member 14 is formed in an approximately U-shaped section which is open downwardly, and the spot welding is performed by aligning lower edges of forward and rearward side walls 14B, 14C with an upper edge of forward and rearward walls 4B, 4C of a shelf part 4 in an approximately flush manner, and each side end part is spot-welded to an upper side part of right and left strut towers 8. The strut member 14 is provided with an extension part 16 of approximately U-shaped section which is open downwardly. A working hole 16a for the connecting work of a shock absorber is formed on an upper wall 16A of the extension part 16. A working hole 19 to be closed by an attachable/detachable lid 20 is formed at the position corresponding to a battery loading part on the shelf part 4 on the upper wall 14A to be arranged on a cabin R side of the strut member.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a rear body structure of a motor vehicle.

[0002]

2. Description of the Related Art Some automobiles include, for example, August 1993.
Nissan Motor Co., Ltd. New Model Manual Introduction of R33 type car As shown on page F-2, page F-7, page F-10, it is formed to bulge upward on the front part of the rear floor panel. It is known that a shelf is formed on the left and right strut towers so as to be joined to side surfaces thereof, and a battery as an easily replaceable automobile part is mounted on an upper wall of the shelf.

[0003]

A relatively heavy battery is mounted and fixed on a shelf located at a front portion of a trunk room, and enters a dead space in the trunk room surrounded by a rear seat back panel and a rear parcel panel. Since the battery is arranged, the dead space in the trunk room can be effectively used. On the other hand, when replacing the battery, it is necessary for the operator to get into the trunk room and replace the battery in the dead space. Therefore, it is undeniable that the workability is somewhat deteriorated.

Accordingly, the present invention is directed to a structure in which automobile parts are mounted on a ledge formed by bulging at the front of a rear floor panel. Another object of the present invention is to provide a rear body structure of an automobile capable of further increasing rigidity.

[0005]

According to the first aspect of the present invention, a shelf is formed on the front portion of the rear floor panel so as to bulge upward and is joined to the side surfaces of the left and right strut towers. In a structure in which easily replaceable automobile parts are mounted on the upper wall, the upper parts of the left and right strut towers above the shelf, and the upper edges of the front and rear walls of the shelf are joined to each other, A strut member having a substantially U-shaped cross-section that forms a closed cross-section between the shelf and the left and right strut towers is provided, and the strut member has an upper wall disposed on the side of the passenger compartment on the shelf. A work hole for mounting an automobile component is formed at a position corresponding to an automobile component mounting portion.

According to a second aspect of the present invention, an inspection hole which is closed by a blind lid is opened in the upper wall of the shelf according to the first aspect, adjacent to the mounting part for automobile parts. An opening is formed in the upper wall above the inspection hole adjacent to a work hole for mounting an automobile part, and the article holding means is removably inserted and arranged in the closed cross-section from the opening. And

According to a third aspect of the present invention, a working opening is formed in the rear wall of the strut member according to the second aspect of the present invention at a position where the inspection hole provided in the upper wall of the shelf can be seen. I have.

According to a fourth aspect of the present invention, the left and right ends of the strut member according to the first to third aspects extend toward the vehicle body side from the shock absorber connection seat of the shock absorber bracket on the upper surface of the strut tower, An extended portion constituting a closed cross section is formed around the shock absorber connection seat.

According to a fifth aspect of the present invention, the front edge of the rear parcel panel body is joined to the rear edge of the upper wall of the strut member according to any one of the first to fourth aspects, and the strut member is used to front the rear parcel panel front. Is characterized.

According to a sixth aspect of the present invention, the rear wall of the shelf and the rear wall of the strut member according to the first to fifth aspects are joined to be substantially flush with each other, and the rear wall of the shelf and the strut are joined together. A spare tire is leaned against the rear wall of the member and stored and fixed vertically.

According to a seventh aspect of the present invention, the easily replaceable automobile part according to the first to sixth aspects is a battery, and a battery bracket for mounting the battery on a shelf is fitted with a bottom of the battery. The bottom surface of the battery bracket is abutted on the upper wall of the shelf, and is joined to the front and rear walls of the peripheral flange of the battery bracket.

According to an eighth aspect of the present invention, a detachable lid is provided in the battery mounting work hole according to any one of the first to seventh aspects, and an upper surface of the battery when the lid is fixed is provided on an inner surface of the lid. And a battery pressing member for pressing against the battery.

[0013]

According to the first aspect of the present invention, the upper wall disposed on the cabin side of the strut member forming the closed cross section between the shelf and the right and left strut towers has an automobile part on the shelf. Since the working hole is formed at a position corresponding to the mounting portion, the replacement work of the automobile parts and the like can be easily performed through the working hole on the large vehicle cabin side, and the workability can be improved.

Further, in addition to the fact that the shelf functions as a strength member having a closed section extending between the left and right strut towers, the strut member extends in the vehicle width direction of the closed section extending between the left and right strut towers above the shelf section. To configure the skeletal member,
Not only can the inward fall rigidity of the strut tower be remarkably increased to improve the controllability, but also torsional rigidity at the rear of the vehicle body and rigidity in the vehicle width direction can be significantly increased in both the sedan type and the rear hatchback type. .

Further, since the front wall of the strut member functions as a rear seat back support panel and the rear seat back can be supported by the strut member, the support stability of the rear seat back can be further enhanced.

According to the second aspect, in addition to the effect of the first aspect, articles can be stored in the article holding means inserted and arranged in the closed cross section by effectively utilizing the closed cross section formed by the strut members. Therefore, convenience can be improved.

Further, since the opening for inserting the article holding means is set above the inspection hole provided in the upper wall of the shelf, the maintenance work of the vehicle-mounted parts mounted below the shelf is not required. By removing the article holding means from the room side, maintenance work can be easily performed through the inspection hole through the opening.

According to the third aspect, in addition to the effect of the second aspect, the maintenance work can be easily performed through the work opening in the rear wall of the strut member without removing the article holding means.

According to the fourth aspect, in addition to the effects of the first to third aspects, a closed cross section is formed around the shock absorber connection seat on the upper surface of the strut tower by the extension of the end of the strut member. Therefore, the mounting rigidity of the shock absorber can be further increased, and the sound vibration performance can be improved.

According to the fifth aspect, in addition to the effects of the first to fourth aspects, the front edge of the rear parcel panel body is joined to the rear edge of the upper wall of the strut member, and the rear parcel panel is joined by the strut member. The front part makes it possible to reduce the size of the rear parcel panel body and improve its assembly workability. In addition, the cooperation of the strut member and the rear parcel panel body significantly increases the rigidity of the rear waist of the vehicle body. be able to.

According to the sixth aspect, in addition to the effects of the first to fifth aspects, the spare tire is stored and fixed vertically by leaning against the rear wall of the shelf and the rear wall of the strut member. Therefore, the load of the spare tire can be received by these shelves and strut members serving as the strength skeletal members at the rear of the vehicle body, so that the mounting rigidity of the spare tire can be increased and the center of gravity of the spare tire is set substantially on the rear wheel. Therefore, the bending rigidity of the rear portion of the vehicle body can be increased.

Since the spare tire can be stored vertically at the front of the trunk room, the amount of overhang at the rear of the vehicle body can be reduced, and the degree of freedom in shaping the rear of the vehicle body can be increased.

According to the seventh aspect, in addition to the effects of the first to sixth aspects, the load of the battery as an automobile part is dispersed to the front and rear walls of the strut member via the front and rear flanges of the battery bracket. The battery load can be received by the strut member, and the battery load can be received at the joint portion of the front and rear flanges in a shear direction which is advantageous in terms of strength. And the mounting stability of the battery can be improved without increasing the thickness or increasing the size of the battery bracket.

According to the eighth aspect, in addition to the effect of the seventh aspect, the inner surface of the lid provided in the working hole in the upper wall of the strut member has a battery which presses against the upper surface of the battery when the lid is fixed. Since the pressing member is provided, the battery can be securely pressed and held by the battery bracket and the lid by fixing the lid to the upper wall, and the upper bracket and the stay member which are generally used for fixing the battery can be used. It can be unnecessary, and therefore, the workability of attaching and detaching the battery can be greatly improved.

[0025]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described below in detail with reference to the drawings.

1 to 3, reference numeral 1 denotes a rear floor panel. The rear floor panel 1 has a front portion 2 and a rear portion 3 having a front end portion overlapped with a rear end portion of the front portion 2 and joined by spot welding. It consists of.

A substantially rear half portion of the front portion 2 forms a shelf portion 4 which is formed to bulge upward, and a fuel tank 5 is mounted below the front portion 2.

The shelf 4 has peripheral flanges 4a at both ends.
Is overlapped on the side surfaces of the strut tower 8 and the rear side member 6 arranged on the side of the rear portion 3 of the rear floor panel 1 and joined by spot welding to form a closed cross section straddling the left and right rear side members 6 and the strut tower 8. As a strength member in the vehicle width direction.

In this embodiment, since the upper portions of the strut towers 8 are integrally press-formed at the upper central portions of the left and right rear wheel house inners 7, the peripheral flanges 4 a at both ends of the shelf 4 described above The rear wheel house inner 7 is abutted and joined to the side surface at the center.

A shock absorber bracket 9 having a relatively large thickness is fitted and fixed to the upper end of the strut tower 8, and the shock absorber connecting seat 9a is provided.
The upper end of the shock absorber of the rear suspension (not shown) is connected and fixed to support.

Battery 1 as easily replaceable automobile part
1 is mounted on the upper wall 4A at one side of the shelf 4 as described later, in this embodiment, on the left side, and a blind lid 13 is provided on the right side opposite to the upper wall 4A. An inspection hole 12 to be closed is provided, and the blind cover 13 is removed so that maintenance work of parts such as valves (not shown) of the fuel tank 5 can be performed through the inspection hole 12.

The strut members 14 extend over the upper portions of the left and right strut towers 8 above the shelf 4.
Are joined to form a closed section 15 in the vehicle width direction above the shelf 4.

The strut member 14 is formed in a substantially U-shaped cross section which is open downward and has front and rear side walls 14B, 14B.
The lower edge of C is aligned with the front edge of the shelf 4 and the upper edges of the rear walls 4B and 4C substantially flush with each other and joined by spot welding, and both side ends are spotted on the upper portions of the left and right strut towers 8. Joined by welding.

In the present embodiment, the strut member 14
At the both end portions thereof, there is provided an extension portion 16 having a substantially U-shaped cross section which is open to the lower side and extends toward the vehicle body side from the shock absorber connection seat portion 9a on the upper surface of the strut tower 8.

A work hole 16a for connecting the shock absorber is formed in the upper wall 16A of the extension 16 at a position corresponding to the shock absorber connection seat 9a, and a work hole 16a is formed in the center of the side. The downward bead portion 16b is recessed in the vehicle width direction, and the bead portion 16b is joined by spot welding to an upward bead portion 9b protruding in the vehicle width direction at the lateral center of the shock absorber bracket 9. In addition, the peripheral flange 16c of the front, rear lower edges and side edges
Is joined to the upper surface of the rear wheel house inner 7 and the rear pillar inner (not shown) by spot welding to form a closed cross section 17 around the shock absorber connecting seat 9a.

The battery 11 is mounted on the left side of the upper wall 4A of the shelf 4 via a battery bracket 18. The upper wall 4A of the strut member 14 has a position corresponding to the battery mounting portion on the shelf 4. Further, a working hole 19 for mounting a battery is formed.

The battery bracket 18 is formed in the shape of a flat rectangular tray into which the bottom of the battery 11 fits, and the bottom is recessed in a mountain shape with the bottom facing downward. Is joined to the upper wall 4A of the shelf 4 by spot welding, and the peripheral flange 18a is joined to the front and rear walls 14B, 14C of the strut member 14 by spot welding.

The work hole 19 has a bolt 22 on the upper wall 14A.
Is closed by an inverted tray-shaped lid 20 fixed by
The inner surface of the lid 20 is provided with a battery pressing member 21 that presses against the upper surface of the battery 11 when the lid 20 is fixed to the upper wall 14A with bolts.
And the battery bracket 18 so that it can be firmly fixed.

Further, the upper wall 14A of the strut member 14
On the right side opposite to the side where the working hole 19 is formed, an opening 23 is formed substantially immediately above the inspection hole 12 provided on the upper wall 4A of the shelf 4 adjacent to the working hole 19. An accessory box 24 as an article holding means having an openable and closable lid 25 is inserted and arranged in the closed section 15 from the opening 23.

The accessory box 24 has a closed section 15
Is formed at a height smaller than the height dimension of the box, and the flange 24a of the upper edge of the box is detachably fastened and fixed to the peripheral edge of the opening 23 by the bolt 22.

Further, the rear wall 14C of the strut member 14
In this embodiment, the working opening 26 is formed at a position where the inspection hole 12 provided in the shelf 4 can be seen, that is, at a position where the accessory box 24 does not obstruct the view on the side where the opening 23 is provided. 1 shows a sedan-type vehicle in which a front edge of a rear parcel panel main body 27 is joined to a rear edge of an upper wall 14A of the strut member 14 by spot welding, and the strut member 14 constitutes a rear parcel panel front. doing.

A spare tire bracket is provided on the side of the rear wall 4C of the shelf 4 on the side of the trunk room TR on the side of the outside of the rear wall 4C in the vehicle width direction. 28, the spare tire ST is attached to the rear wall 4C of the shelf 4 and the strut member 1
4 and fixed to the spare tire bracket 28 by leaning against the rear wall 14C, and the spare tires ST are stored vertically at the front of the trunk room TR.

In FIG. 2, 30 is a rear seat cross member,
Reference numeral 31 denotes a reinforcing member joined to the front edge of the upper wall 4A of the shelf 4 to reinforce the joint between the strut member 14 and the front wall 14B. Reference numeral 32 denotes a rear seat including a seat cushion 32a and a seat back 32b. .

According to the structure of the above embodiment, the upper wall 14A disposed on the vehicle cabin R side of the strut member 14 forming the closed cross section 15 between the shelf 4 and the left and right strut towers 8 has Since the work hole 19 closed by the detachable lid 20 is formed at a position corresponding to the battery mounting portion on the shelf 4, the replacement work of the battery 11 and the like are performed inside the wide vehicle compartment R. 19 can be easily performed, and workability can be improved.

In addition to the fact that the shelf 4 functions as a strength member having a closed cross-section extending between the left and right strut towers 8, the strut member 14 is provided above the shelf 4 between the left and right strut towers 8, 8. Of the vehicle width direction skeletal member having a closed cross-section that straddles the strut towers 8, 8, so that the rigidity of the strut towers 8 inside can be significantly increased to improve the operability, and of course, the strut towers 8, 8 can be improved in the outside of the sedan type vehicle as in this embodiment. In addition, even in a rear hatchback type vehicle, the torsional rigidity and rigidity in the vehicle width direction at the rear portion of the vehicle body can be significantly increased.

Particularly, in the sedan type vehicle of the present embodiment, the front edge of the rear parcel panel body 27 is joined to the rear edge of the upper wall 14A of the strut member 14, and the strut member 14 Since the panel front portion is configured, the rear parcel panel main body 27 can be reduced in size and its assembling workability can be improved.
By the cooperation of the strut member 14 and the rear parcel panel main body 27, the rigidity of the vehicle body rear waist can be significantly increased.

The extension 16 at the end of the strut member 14 forms a closed section 17 around the shock absorber connecting seat 9a on the upper surface of the strut tower 8, so that the mounting rigidity of the shock absorber is reduced. The sound and vibration performance can be improved further.

Further, the front wall 14B of the strut member 14
Can function as a rear seat back support panel to support the rear seat back 32b with the strut member 14, so that the support stability of the rear seat back 32b can be further enhanced.

On the other hand, the battery bracket 18 for holding the battery 11 has its bottom fixed on the upper wall 4A of the shelf 4, and has the front flange 18a and the rear flange in front of the strut member 14 and the rear walls 14B, 14C. To the front and rear walls 14B, 14C
The battery load can be received by the strut member 14 at the joint of the front and rear flanges 18a in a shear direction that is advantageous in terms of strength. The mounting stability of the battery can be improved without increasing the thickness of the battery bracket 18 or increasing the thickness or increasing the size of the battery bracket 18.

A battery holding member 21 which presses against the upper surface of the battery 11 when the lid 20 is fixed is provided on the inner surface of the lid 20 for closing the work hole 19 for mounting the battery.
Is provided, by fixing the lid 20 to the upper wall 14A, the battery 11 can be securely pressed and held between the battery bracket 18 and the lid 20. Therefore, the battery 11 is generally used for fixing the battery. The upper bracket and stay member can be eliminated,
The workability of attaching and detaching the battery can be greatly improved.

Further, in this embodiment, the accessory box 24 is formed from the opening 23 of the upper wall 14A in the side opposite to the battery mounting side by effectively utilizing the closed cross section 15 constituted by the strut member 14. Since they are inserted and arranged, accessories can be stored in the accessory box 24, and convenience can be improved.

Further, since the opening 23 is set at a position above the inspection hole 12 of the shelf 4,
When performing maintenance work on the vehicle-mounted parts such as the fuel tank 5 mounted on the lower side of the shelf 4, it is necessary to remove the accessory box 24 from the cabin R side and easily perform the maintenance work through the inspection hole 12 from the opening 23. In some cases, maintenance work can be performed from the inside of the trunk room TR through the work opening 26 provided in the rear wall 14C without removing the accessory box 24 in some cases.

Further, the spare tire ST is stowed over the rear wall 4C of the shelf 4 and the rear wall 14C of the strut member 14 and stored and fixed vertically, so that the load of the spare tire ST is reduced. It can be received by the shelf 4 and the strut member 14, which serve as a strength skeleton member at the rear of the vehicle body, so that the mounting rigidity of the spare tire ST can be increased and the center of gravity of the spare tire ST The bending rigidity at the rear of the vehicle body can be increased.

Further, since the spare tire ST can be stored vertically at the front of the trunk room TR, the amount of overhang at the rear of the vehicle body can be reduced, and the degree of freedom in shaping the rear of the vehicle body can be increased. be able to.

In the above-described embodiment, a battery that can be replaced by a user has been described as an easily replaceable automobile part. However, the present invention is not limited to this. The lid 20 may be one that closes the working hole 19, but for example, an opening is provided so that an indicator indicating the state of charge of the battery can be seen, and the working hole 19 is completely closed. It does not have to be closed. Furthermore, although the accessory box 24 has been described as an article storage means, for example, a rack member that supports audio 2 knits or the like may be used.

[Brief description of the drawings]

FIG. 1 is an exploded perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view taken along the line AA of FIG. 1;

FIG. 3 is a sectional view taken along the line BB of FIG. 1;

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 Rear floor panel 2 Front part 4 Shelf part 4A Top wall 4B Front wall 4C Rear wall 8 Strut tower 9 Shock absorber bracket 9a Shock absorber connection seat part 11 Battery (easy exchangeable automobile parts) 9 12 Inspection hole 13 Blind lid 14 Strut Member 14A Upper wall 14B Front wall 14C Rear wall 15 Closed cross section 16 Extended section 17 Closed cross section of strut tower upper surface 18 Battery bracket 18a Peripheral flange 19 Battery mounting work hole (Auto parts mounting work hole) 20 Lid 21 Battery holder 23 Opening 24 Accessory box (article holding means) 26 Working opening 27 Rear parcel panel body

Claims (8)

[Claims] 1. A shelf which is bulged upward from a front portion of a rear floor panel to be joined to side surfaces of left and right strut towers, and easily replaceable automobile parts are mounted on an upper wall of the shelf. The upper part of the left and right strut towers above the shelf, the front of the shelf,
A strut member having a substantially U-shaped cross-section joined to the upper edge of the rear wall and forming a closed cross-section between the shelf and the left and right strut towers is disposed on the vehicle cabin side of the strut member. A vehicle body mounting work hole formed at a position corresponding to the vehicle part mounting part on the shelf on the upper wall to be mounted. 2. An inspection hole, which is closed by a blind lid, is opened on the upper wall of the shelf adjacent to the mounting part for automobile parts, while an upper part of the upper wall of the strut member is provided with an automobile. 2. The rear body of an automobile according to claim 1, wherein an opening is formed adjacent to the component mounting work hole, and the article holding means is removably inserted and disposed in the closed cross section from the opening. Construction. 3. The rear body structure of an automobile according to claim 2, wherein a working opening is formed in a rear wall of the strut member at a position where the inspection hole provided in the upper wall of the shelf can be viewed. 4. A closed cross section is formed at both left and right ends of the strut member so as to extend toward the vehicle body side from the shock absorber connection seat of the shock absorber bracket on the upper surface of the strut tower, and around the shock absorber connection seat. An extending portion is formed.
4. The rear body structure of a vehicle according to any one of claims 3 to 5. 5. A rear parcel panel front portion comprising a strut member and a front edge portion of a rear parcel panel body joined to a rear edge portion of an upper wall of the strut member. A rear body structure of the vehicle according to any one of the above. 6. The rear wall of the shelf and the rear wall of the strut member are joined to be substantially flush with each other, and a spare tire is leaned over the rear wall of the shelf and the rear wall of the strut member. The rear body structure of a motor vehicle according to any one of claims 1 to 5, wherein the rear body structure is fixedly stored. 7. An easily replaceable automobile part is a battery, and a battery bracket for mounting the battery on a shelf is formed in a flat rectangular tray shape to which the bottom of the battery fits. 7. The battery device according to claim 1, wherein a bottom of the battery bracket is abutted on an upper wall of the shelf, and a front flange and a rear flange of the battery bracket are joined to front and rear walls of the strut member. The rear body structure of a car according to the present invention. 8. A detachable lid is provided in a work hole for mounting a battery, and a battery pressing member that presses against an upper surface of the battery when the lid is fixed is provided on an inner surface of the lid. The rear body structure of an automobile according to claim 7, wherein