JP2001030758A - Structure of back door lock reinforcing portion for wagon - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a structure of a back door lock reinforcing portion for a wagon, in which the vibration level due to resonance of back door can be suppressed further. SOLUTION: A structure for a back door lock reinforcing portion for a wagon is provided with a lower back outer panel 1 and lower back inner panel 2 which are welded to have a hollow portion. A lock reinforcing member 13 is welded on the inner surface of a door lock striker 5 fixing portion, which is provided on the lower back inner panel 2, near the periphery of a top face thereof and at the periphery thereof. A pair of leg portions 13c are provided integrally, extending downward from both side ends of the top wall of the lock reinforcing member 13 such that the lock reinforcing member 13 is bulkily protruded. Lower end portions f, g of the leg portions 13c are welded on the inner face of the lower back outer panel 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a reinforcing structure for a lower back panel of a wagon vehicle, and more particularly, to a structure of a back door lock reinforcing portion mounted on the lower back panel.

[0002]

2. Description of the Related Art The structure of a back door lock reinforcing portion of a conventional wagon vehicle is a perspective view of a main portion thereof, and FIG.
It is configured as shown in FIG. 6 which is a schematic sectional view taken along the line VI. That is, as shown in FIG. 5 and FIG. 6, the lower back panel is formed by abutting a press-formed lower back outer panel 1 and a press-formed lower back inner panel 2 having a concave portion 2 a formed at the center. Predetermined portions of the upper and lower edges are spot-welded to form a hollow structure. On the inner surface of the concave portion 2a of the lower back inner panel 2, a lock reinforcing member 3 in the form of a generally shallow inverted tray having a narrowed peripheral portion as shown in FIG. Spot welding is performed at predetermined locations a, b, c, and d, and the upper edge 3a of the lock reinforcing member 3
Are joined by driving a stud 4 in a state of being sandwiched between both upper edges of the lower back outer panel 1 and the lower back inner panel 2.

Further, a door lock striker 5 for locking a lower end of a back door (not shown) is mounted on a central portion of an upper surface of the concave portion 2a of the lower back inner panel 2. Further, a retainer 6 is applied to a central portion of the lower surface of the lock reinforcing member 3, and a pair of long holes 2 b formed in the base portion of the door lock striker 5 and the concave portion 2 a of the lower back inner panel 2 and the lock reinforcing member 3 are provided. Bolt 7 and nut 8 penetrating the formed pair of elongated holes 3b and retainer 6
As a result, the door lock striker 5 is fastened and fixed so that its position can be adjusted slightly.

[0004]

However, in the structure of the back door lock reinforcing portion, only the portion other than the upper edge 3a of the lock reinforcing member 3 is connected to the lower back inner panel 2. For this reason, it is necessary to further improve the support rigidity around the back door lock reinforcing portion and further suppress the vibration level of the back door resonance.

Accordingly, an object of the present invention is to provide a structure of a back door lock reinforcing portion of a wagon vehicle that can further suppress the vibration level of the back door resonance.

[0006]

According to one embodiment of the present invention, a lower back outer panel and a lower back inner panel are welded to form a hollow structure, and a door lock striker of the lower back inner panel is provided. In a structure of a back door lock reinforcing portion of a wagon vehicle in which a lock reinforcing member is welded to an inner surface of a fixed portion at a peripheral portion near a top surface and a peripheral portion thereof, a pair of lock reinforcing members extending downward at both side ends of a top wall of the lock reinforcing member. Are formed integrally, and the lock reinforcing member is extended in a bulk shape, and the lower ends of the pair of extended legs of the reinforcing member are welded to the inner surface of the lower back outer panel. In the above configuration, it is preferable that an upper edge portion of the lock reinforcing member is connected to be sandwiched between both upper edge portions of the lower back outer panel and the lower back inner panel.

[0007] According to the above configuration, the lock reinforcing member projects and supports the lower back inner panel and the lower back outer panel in a bulk structure, so that the support rigidity around the back door lock reinforcing portion is further improved. The vibration level of the back door resonance is further suppressed.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings. Note that components having the same or similar functions as those of the above-described conventional example are denoted by the same reference numerals and described. FIG. 1 is a perspective view of a main part of an embodiment of a structure of a back door lock reinforcing portion of a wagon vehicle according to the present invention. FIG. 2 is a schematic sectional view taken along the line II-II of FIG.
FIG. 3 is a schematic sectional view taken along the line III-III of FIG. 2, and FIG. 4 is a perspective view of the lock reinforcing member of the embodiment.

As shown in FIG. 1, a lower back panel according to the present invention comprises a press-formed lower back outer panel 1.
And a lower back inner panel 2 which is press-formed and has a concave portion 2a formed in the center portion, and predetermined portions of upper and lower edges thereof are spot-welded to form a hollow structure. According to the embodiment of the present invention, the inner surface of the concave portion 2a of the lower back inner panel 2 has:
As shown in FIG. 4, a bulk-shaped lock reinforcing member 13 having a narrowed peripheral portion is disposed so as to protrude toward the lower back outer panel 1 side. As shown by the dotted line in FIG. 1, the lock reinforcing member 13 is provided on the inner surface of the concave portion 2a of the lower back inner panel 2 at a predetermined portion a, b, c, d near the top surface periphery and at the periphery. The upper edge portion 13a of the lock reinforcing member 13 is spot-welded, and is joined by driving a stud 4 while being sandwiched between the upper edge portions of the lower back outer panel 1 and the lower back inner panel 2.

Further, as shown in FIGS. 2 and 3, lower ends f and g of a pair of downwardly extending legs 13c integrally formed on both side ends of the top wall of the lock reinforcing member 13 have lower back outer panels 1. Spot welded to the inner surface of

As in the prior art, a door lock striker 5 for locking a lower end of a back door (not shown) is placed at the center of the upper surface of the concave portion 2a of the lower back inner panel 2. A retainer 6 is applied to the center of the lower surface of the reinforcing member 13, and a pair of long holes 2 b formed in the base of the door lock striker 5 and the concave portion 2 a and a pair of long holes 13 b formed in the lock reinforcing member 13. The door lock striker 5 is fastened and fixed by a bolt 7 and a nut 8 that penetrate the door lock retainer 6 so that the position of the door lock striker 5 can be adjusted slightly. 14 is a concave portion 2a of the lower back inner panel 2.
Are a pair of reinforcing plates that reinforce the bent portions 2c at both ends.

According to the above-described embodiment, the lock reinforcing member 13 is formed to protrude toward the lower back outer panel 1 in a bulk shape, and predetermined portions a, b, c, and d near the top surface periphery and the periphery are formed. Recess 2a of lower back inner panel 2
And the lower end portions f and g of the legs 13c are spot-welded to the inner surface of the lower back outer panel 1, so that the lock reinforcing member 13 is formed of the lower back inner panel 2 and the lower back outer panel 1. The space will be supported by the bulk structure. Therefore, the supporting rigidity around the back door lock reinforcing portion is further improved, and the vibration level of the back door resonance is further suppressed. According to the experiment, the vibration level of the back door resonance was suppressed by 3 to 4 dB.

[0013]

As will be understood from the above description, according to the structure of the back door lock reinforcing portion of the wagon vehicle according to the present invention, the support rigidity around the back door lock reinforcing portion is further improved, and the back door resonance is improved. An excellent effect of further suppressing the vibration level of the motor is exhibited.

[Brief description of the drawings]

FIG. 1 is a perspective view of a main part of an embodiment of a structure of a back door lock reinforcing portion of a wagon vehicle according to the present invention.

FIG. 2 is a schematic sectional view taken along the line II-II in FIG.

FIG. 3 is a schematic sectional view taken along the line III-III in FIG. 2;

FIG. 4 is a perspective view of the lock reinforcing member of the embodiment.

FIG. 5 shows a structure of a back door lock reinforcing portion of a conventional wagon vehicle.

FIG. 6 is a schematic sectional view taken along the line VI-VI of FIG. 5;

FIG. 7 is a perspective view of the lock reinforcing member of the conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Lower back outer panel 2 Lower back inner panel 2a Depression 4 Tack 5 Door lock striker 6 Retainer 7 Bolt 8 Nut 13 Lock reinforcing member 13a Upper edge of lock reinforcing member 13c Leg of lock reinforcing member f, g Lower end of leg 14 Reinforcement plate

Claims (2)

[Claims] 1. A lower back outer panel and a lower back inner panel are welded to form a hollow structure, and a lock reinforcing member is provided on an inner surface of a door lock striker fixing portion of the lower back inner panel at a peripheral portion near a top surface and a peripheral portion thereof. In a structure of a back door lock reinforcing portion of a wagon vehicle formed by welding, a pair of legs extending downward are integrally formed on both side ends of a top wall of the lock reinforcing member to make the lock reinforcing member a bulk, The structure of the back door lock reinforcing portion of a wagon vehicle, wherein a lower end portion of the leg portion is welded to an inner surface of the lower back outer panel. 2. The wagon according to claim 1, wherein an upper edge portion of the lock reinforcing member is coupled between the upper edge portions of the lower back outer panel and the lower back inner panel. The structure of the back door lock reinforcement of the car.