JP6727258B2 - Car backdoor structure - Google Patents

Description

The present invention relates to a backdoor structure for an automobile, in which a decorative garnish extending in the vehicle width direction is fixed to the lower rear surface of a backdoor body that opens and closes a rear opening of a vehicle body, and parts are arranged between the backdoor body and the garnish. ..

An ornamental garnish, which is fixed to the rear surface of the back door body that opens and closes the rear opening of the vehicle body, has an emblem support portion that extends downward in the vertical direction and a mounting component support portion that extends horizontally forward from the lower end of the emblem support portion. A rear monitoring camera that is formed in a crank-shaped cross section having a license support portion that extends downward in the vertical direction from the front end of the component support portion, and that has a rear monitoring camera that captures an image of the rear of the vehicle body is attached to the upper surface of the attachment component support portion. 1 is known.

JP, 2014-210529, A

By the way, in the above-mentioned conventional one, not only is there a restriction on the design because the garnish needs to be formed in a crank-shaped cross section, but the rear monitoring camera is fixed only to the synthetic resin garnish and the back door body made of steel plate is fixed. Since it is not fixed to the rear, the supporting rigidity of the rear monitoring camera may be insufficient.

The present invention has been made in view of the above circumstances, and an object of the present invention is to secure support rigidity of a component with respect to a garnish while suppressing restrictions on the design of the garnish provided on the back door.

In order to achieve the above object, according to the invention described in claim 1, a decorative garnish extending in the vehicle width direction is fixed to a lower portion of a rear surface of a back door body that opens and closes a rear opening of a vehicle body, and the back door is provided. a back door structure for an automobile in which to place the component between the main body and the garnish, wherein the component is fixed to the rear hatch main body and said garnish comprises a reinforcing plate sandwiched between the rear hatch main body and the garnish The lower edge of the reinforcing plate comes into contact with a folding flange obtained by folding the lower portion of the garnish forward, and the reinforcing plate includes a bulge portion that bulges forward above the folding flange, and the reinforcing plate is the back. A vehicle back door structure is proposed in which a nut with which a bolt for fastening to a door body is screwed is provided on the rear surface of the bulging portion .

Na us, fog lamp 14 of the embodiment corresponds to the component of the present invention, weld nuts 22 for implementation of forms you corresponds to the nut of the present invention.

According to the structure of claim 1, a decorative garnish extending in the vehicle width direction is fixed to the lower portion of the rear surface of the back door body that opens and closes the rear opening of the vehicle body, and parts are arranged between the back door body and the garnish. Since the parts are fixed to the backdoor body and the garnish respectively, the parts can be firmly supported without giving the garnish a special shape, and the backdoor body and the garnish are connected to each other through the parts, so The rigidity of the back door body and the garnish can be increased .

Further , a reinforcing plate sandwiched between the back door body and the garnish is provided, and the lower edge of the reinforcing plate comes into contact with the folding flange formed by folding the lower part of the garnish forward, and the reinforcing plate bulges forward above the folding flange. Since the nut with the bulging portion and with which the bolt for fastening the reinforcing plate to the back door body is screwed is provided on the rear surface of the bulging portion, it is possible to position the reinforcing plate with the folding flange and improve the assembly workability. Not only can the garnish be integrated with the reinforcing plate to be easily and reliably fastened to the back door body by screwing the bolt onto the nut .

It is a perspective view which shows the rear surface of the back door of a motor vehicle. FIG. 2 is a two-direction arrow view of FIG. 1 (a perspective view showing the front surface of the back door). It is a 3 direction arrow line view (front view of a garnish) of FIG. FIG. 4 is a four-direction arrow view of FIG. 2 (a rear view of the back door body). FIG. 5 is an enlarged arrow view of a 5A portion and a 5B portion of FIG. 3. FIG. 6A is an enlarged sectional view taken along line 6A-6A and line 6B-6B of FIG. 3. FIG. 7 is an enlarged sectional view taken along line 7-7 of FIG. 3. FIG. 8 is an enlarged sectional view taken along line 8-8 of FIG. 3. FIG. 9 is an enlarged sectional view taken along line 9-9 of FIG. 3. FIG. 10 is an enlarged sectional view taken along line 10-10 of FIG. 3.

Hereinafter, an embodiment of the present invention will be described with reference to FIGS. The front-rear direction, the left-right direction (vehicle width direction), and the up-down direction in this specification are defined with reference to an occupant seated in the driver's seat.

As shown in FIG. 1, a back door 11 that covers an opening of a rear portion of a vehicle body of an automobile in an openable and closable manner covers a back door body 12 made of a steel plate whose upper end is pivotally supported by the vehicle body, and a lower rear surface of the back door body 12. A decorative garnish 13 formed in a plate shape with a synthetic resin such as ABS or polypropylene. A window portion 12a into which a door glass is fitted is formed in the center of the back door body 12, fog lamps 14 are provided on both sides of the garnish 13 in the vehicle width direction, and are formed at both ends of the garnish 13 in the vehicle width direction. The left and right combination lamps 15 provided on the rear part of the vehicle body are in contact with the semicircular recess 13a.

As shown in FIG. 2, the back door body 12 includes an outer panel 16 having a rectangular opening having the same shape as the window 12a and an inner panel 17 having a pentagonal opening slightly larger than the window 12a. Only the triangular portion facing the lower side of the window portion 12a is a single plate of the outer panel 16 and the other portions of the outer panel 16 and the inner panel 17 have a hollow closed cross section.

As shown in FIGS. 2 to 4, a reinforcing plate 18 made of a metal plate is fixed between both ends of the garnish 13 in the vehicle width direction and both ends of the lower portion of the back door body 12 in the vehicle width direction. To be done. The vehicle width direction end of the garnish 13 is provided with an upper protrusion 13b and a lower protrusion 13c that surround the semicircular recess 13a, and there is a semicircular recess 18a at the vehicle width end of the reinforcing plate 18. The upper protrusion 18b and the lower protrusion 18c that surround the are overlapped. The lower end of the back door body 12 has a slightly smaller dimension in the vehicle width direction, from which the lower protrusion 18c of the reinforcing plate 18 and the lower protrusion 13c of the garnish 13 protrude outward in the vehicle width direction.

Bag-shaped portions 13d and 13e that open inward in the vehicle width direction are formed on the upper protruding portion 13b and the lower protruding portion 13c of the garnish 13, and the inner surface of the lower bag-shaped portion 13e extends in the vehicle width direction. A large number of linear ribs 13f that extend are provided to project (see FIGS. 3 and 5B). Further, a folding flange 13g that is folded back toward the front is formed at the lower edge of the garnish 13, and the lower edge of the reinforcing plate 18 is locked to this folding flange 13g (FIG. 3, FIG. 5(B) and (See FIG. 7).

A first mounting seat 19 formed of a synthetic resin in a plate shape is fixed along the upper edge of the garnish 13 by adhesion. An upper portion of the reinforcing plate 18 is superposed on the front surface of the first mounting seat 19 and is reinforced from the front side. The reinforcing plate 18 is fastened to the garnish 13 by screwing the tapping screw 20 penetrating the plate 18 into the first mounting seat 19 (see FIGS. 3 and 7). Further, the second mounting seat 13h projects forward from the lower part of the garnish 13, the lower part of the reinforcing plate 18 is superposed on the front surface of this second mounting seat 13h, and the tapping screw 21 penetrating the reinforcing plate 18 from the front The reinforcing plate 18 is fastened to the garnish 13 by being screwed into the mounting seat 13h (see FIG. 3). At this time, the reinforcing plate 18 is positioned with respect to the garnish 13 by fitting the lower edge of the reinforcing plate 18 into the folded flange 13g at the lower edge of the garnish 13 (see FIG. 7).

Bulging portions 18d and 18e that bulge forward are formed in the upper and lower portions of the reinforcing plate 18, and a weld nut 22 is provided in a space behind the bulging portions 18d and 18e (FIG. 3, FIG. (See FIGS. 4, 6 and 7).

As shown in FIGS. 3, 4, and 8 to 10, the fog lamp 14 includes a box-shaped case 23 for housing the lamp therein, and a lens 24 provided on the rear surface of the case 23. A convex portion 24a that projects rearward from the center of the 24 and fits into the opening 13i of the garnish 13 exposes the rear portion of the vehicle body so that it can be irradiated.

Four brackets 23a to 23d project outward from the outer periphery of the case 23 of the fog lamp 14, a circular screw hole 23e is formed in the bracket 23a, and a U-shaped bolt groove 23f is formed in the bracket 23b. A circular screw hole 23g and a U-shaped bolt groove 23h are formed in 23c, and a circular screw hole 23i and a U-shaped bolt groove 23j are formed in the bracket 23d. Nuts 25 are provided on the rear surfaces of the three bolt grooves 23f, 23h, and 23j, respectively.

In the fog lamp 14 having such a structure, the upper and lower edges of the lens 23 are temporarily fixed to the upper and lower edges of the opening 13i of the garnish 13 with the double-sided tape 26. Then, the three tapping screws 27 penetrating the three screw holes 23e, 23g, 23i of the case 23 of the fog lamp 14 are screwed into the front surface of the garnish 13 and the first and second mounting seats 194, 13h of the garnish 13. As a result, the case 23 of the fog lamp 14 is permanently fixed to the garnish 13.

Then, a bolt 28 penetrating the upper portion of the back door body 12 and the reinforcing plate 18 is screwed into the weld nut 22 (see FIGS. 3, 5A and 6A), and By bolting the bolt 29 penetrating the reinforcing plate 18 to the weld nut 22 (see FIGS. 3, 5B, 6B and 7), the reinforcing plate 18 together with the garnish 13 is attached to the backdoor body. It is fastened to 12. Further, the garnish 13 is fastened to the back door body 12 by fastening the outer panel 16 on the upper portion of the back door body 12 to the first mounting seat 19 with a plurality of clips 30 (see FIGS. 3 and 8).

In this state, the upper end of the garnish 13 and the rear surface of the outer panel 16 of the back door body 12 with which the garnish 13 abuts are sealed by the foam sealing member 32, and are partitioned between the garnish 13 and the outer panel 16 so that the fog lamp 14 can be protected. Water is prevented from entering the storage space (see FIGS. 3, 5A, and 7 to 9).

In this way, when the garnish 13 is fastened to the back door body 12, the three bolts penetrating the three bolt grooves 23f, 23h, and 23j of the outer panel 16 of the back door body 12 and the case 23 of the fog lamp 14 are penetrated. The fog lamp 14 is completely fixed to the outer panel 16 by screwing 31 into the nut 25 of the case 23 through the working opening 17a formed in the inner panel 17 (see FIGS. 3 and 9).

Next, the operation of the embodiment of the present invention having the above configuration will be described.

The decorative garnish 13, which is superposed on the lower rear surface of the back door body 12 of the back door 11, includes an upper protruding portion 18b protruding outward in the vehicle width direction so as to surround an upper portion of an inner edge in the vehicle width direction of the combination lamp 15, and the combination. A lower protrusion 18c protruding outward in the vehicle width direction so as to surround a lower portion of the inner edge of the lamp 15 in the vehicle width direction, and a reinforcing plate 18 made of a metal plate on the front surface of the upper protrusion 18b and the lower protrusion 18c. The garnish 13 made of synthetic resin is reinforced with the reinforcing plate 18 so that the garnish 13 is prevented from being deformed or damaged even if the back door 11 is opened and closed by grasping the garnish 13 portion. Not only that, but the weight of the back door body 12 can be reduced by constructing a part of the back door body 12 made of a heavy steel plate with the garnish 13 made of synthetic resin.

Moreover, by providing the combination lamp 15 at the rear part of the vehicle body, it is possible to increase the degree of freedom in design as compared with the case where it is provided on the back door 11 side, and the garnish 13 is provided on the upper protruding portion 18b and the lower protruding portion 18c. Since the circular arc-shaped recess 13a is provided, the garnish 13 can be arranged so as to surround the inner edge of the round combination lamp 15 in the vehicle width direction.

Further, bag-shaped portions 13d, 13e into which the reinforcing plate 18 is inserted are formed on the front surface of the garnish 13 on the outer side in the vehicle width direction, and the bag-shaped portions 13d, 13e are provided with an upper protruding portion 18b and a lower protruding portion 18c of the reinforcing plate 18. Since the front end of the garnish 13 is inserted and the reinforcing plate 18 is fastened to the first mounting seat 19 and the second mounting seat 13h projecting on the front surface of the garnish 13 in the vehicle width direction by the tapping screws 20 and 21, Even if there is a difference in the amount of thermal expansion between the garnish 13 and the metal reinforcing plate 18, the difference in the amount of thermal expansion is due to the upper protruding portion 18b and the lower protruding portion 18c of the reinforcing plate 18 with respect to the bag-shaped portions 13d and 13e. Can be absorbed by the relative movement of.

Further, since the reinforcing plate 18 is fixed to the garnish 13 by using the first mounting seat 19 for mounting the garnish 13 on the back door body 12 and the second mounting seat 13h for mounting the fog lamp 14 on the garnish 13, Since it is not necessary to provide a special mounting seat on the plate 18, the weight of the reinforcing plate 18 can be reduced. Moreover, since the rib 13f for contacting and positioning the reinforcing plate 18 is provided on the inner surface of the lower bag-shaped portion 13e of the garnish 13, it is possible to prevent the reinforcing plate 18 from rattling and generating noise while the vehicle is running. Instead, the rib 13f reinforces the garnish 13 to increase its strength, and the deformation of the garnish 13 can be prevented even when the vicinity of the lower bag-shaped portion 13e is gripped when the back door 11 is opened and closed.

In particular, since the rib 13f is formed in the vehicle width direction so as to be directed to the opening of the lower bag-shaped portion 13e, the reinforcing plate 18 can be easily inserted into the lower bag-shaped portion 13e and the assembling work can be performed. The property is improved. Moreover, since the bag-shaped portions 13d and 13e are provided on the upper and lower portions of the garnish 13, the upper bag-shaped portion 13d prevents the garnish 13 from warping and the lower bag-shaped portion 13e opens and closes the back door 11. It is possible to secure strength against the load.

Also, since the first mounting seat 19 projects forward from the garnish 13, not only can a space for accommodating the fog lamp 14 be secured between the garnish 13 and the outer panel 16 of the back door body 12, but also the upper end of the garnish 13 and the outer panel 16 can be secured. Since the foam sealing member 32 is disposed between the foam sealing member 32, it is possible to prevent the infiltration of water into the space for housing the fog lamp 14 by the foam sealing member 32.

Further, the back door body 12 has an annular closed cross-section skeleton in which the outer panel 16 and the inner panel 17 are combined, and the garnish 13 is attached to the lower part of the closed cross-section skeleton, so that the strength of the back door body 12 is increased by the closed cross-section skeleton. As a result, it is possible to prevent the back door main body 12 from being deformed or damaged when the back door 11 is opened and closed by grasping the portion of the garnish 13.

Further, the lower edge of the reinforcing plate 18 is brought into contact with the folding flange 13g obtained by folding back the lower portion of the garnish 13, and the reinforcing plate 18 is provided with a bulging portion 18e which bulges forward above the folding flange 13g. Since the weld nut 22 with which the bolt 29 for fastening to the back door body 12 is screwed is provided on the rear surface of the bulging portion 18e, it is possible to position the reinforcing plate 18 with the folding flange 13g and improve the workability of assembly. Instead, by screwing the bolt 29 into the weld nut 22, the garnish 13 can be easily and reliably fastened to the back door body 12 integrally with the reinforcing plate 18.

Further, the fog lamp 14 arranged in the space defined between the back door body 12 and the garnish 13 is fixed to the garnish 13 with three tapping screws 27, and the outer panel 16 of the back door body 12 is fixed with three bolts 31. Since the fog lamp 14 can be firmly supported without giving the garnish 13 a special shape such as a crank-shaped cross section, the back door body 12 and the garnish 13 are connected to each other via the fog lamp 14, The fog lamp 14 enhances the rigidity of the back door body 12 and the garnish 13.

Further, since the fog lamp 14 is temporarily fixed to the garnish 13 with the double-sided tape 26, the workability when the fog lamp 14 is finally fixed to the garnish 13 with the three tapping screws 27 can be improved, and the double-sided tape 26 can fix the fog lamp 14 to the garnish 13. The fixing strength can be increased.

Further, since the inner panel 17 of the back door body 12 has the working opening 17a, the operation of the three bolts 31 for fastening the fog lamp 14 to the outer panel 16 can be performed through the working opening 17a of the inner panel 17 without any hindrance. You can

Further, since the convex portion 24a of the lens 24 of the fog lamp 14 is fitted in the opening 13i of the garnish 13, the lens 24 of the fog lamp 14 can be accurately positioned with respect to the garnish 13.

Although the embodiments of the present invention have been described above, the present invention can be modified in various ways without departing from the scope of the invention.

For example, the component of the present invention is not limited to the fog lamp 14 of the embodiment.

Further, although the fog lamp 14 is fixed by the three tapping screws 27 and the three bolts 31 in the embodiment, the type and number of fastening means thereof are arbitrary.

Further, in the embodiment, the first mounting seat 19 is formed as a separate member from the garnish 13, but it may be formed integrally with the garnish 13, or the second mounting seat 13h may be formed integrally with the garnish 13. However, it may be configured as a separate member from the garnish 13.

Further, the seal member of the present invention is not limited to the foam seal member 32 of the embodiment.

Further, the adhesive member of the present invention is not limited to the double-sided tape 26 of the embodiment.

12 back door body 13 garnish 13a recess 13b upper protrusion 13c lower protrusion 13g folding flange 13i opening 14 fog lamp (part)
15 combination lamps
16 Outer panel 17 Inner panel 17a Work opening 18 Reinforcement plate 18e Bulging portion 19 First mounting seat (mounting seat)
22 Weld nut (nut)
24 lens 26 double-sided tape (adhesive member)
29 bolts 32 foam sealing member (sealing member)

Claims (1)

A decorative garnish (13) extending in the vehicle width direction is fixed to the lower rear surface of the back door body (12) that opens and closes the rear opening of the vehicle body, and a part () is provided between the back door body (12) and the garnish (13). 14) is a back door structure of an automobile in which
The component (14) is fixed to the back door body (12) and the garnish (13), respectively , and includes a reinforcing plate (18) sandwiched between the back door body (12) and the garnish (13), The lower edge of the reinforcing plate (18) is brought into contact with the folding flange (13g) obtained by folding the lower portion of the garnish (13) forward, and the reinforcing plate (18) expands forward above the folding flange (13g). A nut (22) having a bulging portion (18e) that protrudes, and a bolt (29) for fastening the reinforcing plate (18) to the back door body (12) is screwed into the bulging portion (18e). A back door structure for an automobile, which is provided on the rear surface of the vehicle.