JP2011148464A - Back door structure of vehicle - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a back door structure of a vehicle suppressing vibration and noise by reducing weight by providing a large opening part in an inner panel lower half part and securing rigidity by an inclined part and a reinforcing member for reinforcing a latch mounting part. <P>SOLUTION: The lower half part 3C includes an intermediate side part 3D constituting a lower side of a windshield opening part 18 at a vertical direction intermediate position of a back door, a lower side part 3E constituting a lower side of the back door, the opening part 19 formed between the intermediate side part 3D and the lower side part 3E, lower part side parts 3F provided on right and left sides of the opening part 19, and the inclined part 3G for connecting the vicinity of a connecting part of the intermediate side part 3D and the lower part side parts 3F and the lower side part 3E to be inclined in a vehicle width direction. The reinforcing member 23 is provided at a substantial center part of a vehicle width direction of the lower side part 3E to reinforce the latch mounting part. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a vehicle back door structure, and more specifically, the back door includes an inner panel and an outer panel, and the inner panel includes an upper side that forms the upper side of the windshield opening, and a lower side from the left and right of the upper side. It is related with the back door structure of the vehicle comprised from the upper side part extended in this, and the lower half part connected to the lower end of this upper side part.

Generally, in a vehicle such as a wagon car, an opening is provided in the rear wall of the vehicle body, and the opening is opened and closed by a back door.
When the above-mentioned back door is closed, it is connected by a striker on the vehicle body side and a latch on the back door side, while the road surface irregularities are input as external vibrations through the tires when the vehicle is running. In order to prevent the generation of noise from the back door caused by the above, it is desired to secure sufficient rigidity at the lower portion of the back door.

In response to such a demand, a vehicle back door structure disclosed in Patent Document 1 has already been invented.
That is, in a back door that opens and closes by turning an opening provided on the rear surface of the vehicle body around the upper side via a hinge provided on an upper side portion of the opening, the back door includes an inner panel and an outer panel. A latch that is configured as a hollow body and that allows the engaging member of the latch housed inside the back door to face the lower surface of the inner panel so that it can engage with the striker on the vehicle body side when closed. And the latch is attached to the lower surface of the inner panel via a reinforcing plate that reinforces the periphery of the opening for the latch in the inner panel. An upper extension that extends and is joined to the outer panel is provided, and the inner panel is joined to the upper extension.

According to the conventional structure disclosed in Patent Document 1, the rigidity of the lower surface portion of the inner panel is improved, the deformation thereof is suppressed, and the accompanying vibration and noise can be suppressed. On the other hand, there were the following problems.
That is, in the conventional structure, a large opening is not formed in a portion below the intermediate side that constitutes the lower side of the windshield opening at the intermediate position in the vertical direction of the back door, and the portion Since there is no technical idea of providing a large opening, the vibration and noise can be suppressed by securing rigidity and the back door can be reduced in weight by providing a large opening. There was a problem that could not be done.

JP 2009-23480 A

  Therefore, the present invention provides a large opening in the lower half of the inner panel to reduce the weight, and also secures rigidity and suppresses vibration and noise by the inclined portion and the reinforcing member that reinforces the latch mounting portion. An object of the present invention is to provide a vehicle back door structure that can be used.

In the vehicle back door structure according to the present invention, the back door includes an inner panel and an outer panel, and the inner panel includes an upper side portion that forms the upper side of the windshield opening, and an upper side that extends downward from the left and right sides of the upper side portion. A vehicle back door structure comprising a side portion and a lower half portion connected to the lower end of the upper side portion, wherein the lower half portion is a windshield opening at an intermediate position in the vertical direction of the back door. Provided on the left and right sides of the opening, the intermediate side that forms the lower side of the part, the lower side that forms the lower side of the back door, the opening formed between the intermediate side and the lower side, A lower side portion, a vicinity of a connecting portion between the intermediate side portion and the lower side portion, and an inclined portion that connects the lower side portion with an inclination in the vehicle width direction. It is installed at the center of the lower side in the vehicle width direction. Those having a reinforcing member for reinforcing the mounting portion of the switch.
According to the above configuration, since the opening is formed between the intermediate side and the lower side, the opening can be formed large. Then, by providing such a large opening in the lower half of the inner panel, the weight of the entire inner panel or back door can be reduced.

In addition, the back door is provided with an inclined portion that connects the vicinity of the connecting portion between the intermediate side portion and the lower side portion and the lower side portion in an inclined manner in the vehicle width direction, and a reinforcing member that reinforces the attachment portion of the latch. Since rigidity is ensured and deformation is suppressed by securing this rigidity, vibration and noise can be suppressed.
In short, it is possible to achieve both weight reduction by providing a large opening and suppression of vibration and noise by ensuring rigidity.

In an embodiment of the present invention, a joint portion is provided at the middle position in the vehicle width direction of the intermediate side portion so as to extend toward the outer panel and to be joined to the outer panel.
According to the above configuration, since the intermediate side portion and the outer panel are joined in the front-rear direction at the joint portion, the rigidity of the intermediate side portion can be ensured, thereby further suppressing vibration and noise. .

In one embodiment of the present invention, the inclined portion includes a joint portion that extends toward the outer panel and is joined to the outer panel.
According to the said structure, since an inclination part and an outer panel are joined to the front-back direction by the said junction part, the rigidity of an inclination part can be ensured and, thereby, a vibration and noise can be suppressed further.

In one embodiment of the present invention, the joint portion is provided on a substantially straight line in the vehicle width direction.
According to the above configuration, since the outer panel and the intermediate side portion or the outer panel and the inclined portion are joined via the joint portion provided substantially linearly in the vehicle width direction, it is possible to efficiently ensure rigidity. it can.

In one embodiment of the present invention, the joint portion is joined to the outer panel by welding, and an exterior product is provided on the outer side of the outer panel.
You may set the above-mentioned exterior goods to a garnish or a license plate (so-called number plate).
According to the above configuration, since the joining portion and the outer panel are joined by welding, rigidity can be ensured by this welding, and weld marks and the like can be covered with an exterior product provided on the outer side of the outer panel, Can be prevented.

In one embodiment of the present invention, a connecting portion that connects the intermediate portion of the inclined portion and the lower side portion or the lower portion is provided.
According to the said structure, the rigidity of an inclination part can be ensured by the above-mentioned connection part, Thereby, a vibration and a noise can be suppressed further.

In one embodiment of the present invention, the reinforcing member is configured to connect the inner panel and the outer panel.
According to the said structure, since an inner panel and an outer panel are connected by a reinforcement member, the further improvement in rigidity can be aimed at.

In one embodiment of the present invention, a connecting member that extends and connects the inner panel and the outer panel in the front-rear direction is provided on a side portion of the reinforcing member.
According to the said structure, since an inner panel and an outer panel are connected by a connection member, further ensuring of rigidity can be achieved.

In one embodiment of the present invention, the reinforcing member is configured by integrally including the connecting member.
According to the above configuration, since the reinforcing member and the connecting member are integrated, it is possible to achieve both reduction in the number of parts and cost reduction.

In one embodiment of the present invention, the connecting member is provided so as to cover the latch from the side.
According to the above configuration, since the latch is covered with the connecting member from the side portion, unauthorized access to the latch can be prevented, and theft can be prevented.
For example, a lever is provided to release the latch from the access opening when the battery stops and the latch does not move. The unauthorized access can be prevented.

  According to the present invention, a large opening is provided in the lower half of the inner panel to reduce the weight, and the rigidity is ensured by the inclined portion and the reinforcing member that reinforces the latch mounting portion, thereby suppressing vibration and noise. There is an effect that can be done.

The rear view which shows the back door structure of the vehicle of this invention Rear view of inner panel Perspective view of inner panel 1 is a cross-sectional view taken along line AA in FIG. Rear view of reinforcement member Plan view of the reinforcing member Left side view of FIG. Right side view of FIG. Perspective view of reinforcing member The perspective view which shows the reinforcement structure by a reinforcement member The expanded sectional view of the site | part corresponded to the BB line of FIG. The perspective view which shows the other Example of a reinforcement member The perspective view which shows other Example of a reinforcement member

  For the purpose of achieving both weight reduction by providing a large opening and suppression of vibration and noise by ensuring rigidity, the back door includes an inner panel and an outer panel, and the inner panel includes a windshield opening. In a vehicle back door structure comprising an upper side portion constituting the upper side, an upper side portion extending downward from the left and right of the upper side portion, and a lower half portion connected to the lower end of the upper side portion The lower half includes an intermediate side that forms the lower side of the windshield opening at the intermediate position in the vertical direction of the back door, a lower side that forms the lower side of the back door, the intermediate side, and the lower side An opening formed between the lower side part, the lower side part provided on the left and right of the opening part, the vicinity of the connecting part of the intermediate side part and the lower side part, and the lower side part in the vehicle width direction. An inclined portion that is inclined and joined; Provided with configured and realized by constituting that comprises a reinforcing member for reinforcing the mounting portion of the latch is provided in the vehicle width direction substantially central portion of the lower side.

An embodiment of the present invention will be described in detail with reference to the drawings.
The drawings show a vehicle back door structure. In FIGS. 1, 2 and 3, the back door 1 is constructed by joining an outer panel 2 shown in FIG. 1 and an inner panel 3 shown in FIGS. Is.

Prior to the description of the detailed structure of the back door 1, first, the structure on the vehicle body side will be described. As shown in the sectional view taken along line AA in FIG. 1, the floor surface of the luggage compartment 4 is formed. A rear floor 5 (floor panel) is provided, and a spare tire pan 6 that is stepped downward is provided at the center of the rear floor 5 in the vehicle width direction.
A rear end panel 7 rising upward by a predetermined amount is attached to the rear end portion of the rear floor 5, and a rear end member 8 is joined and fixed to the rear side of the rear end panel 7. A rear end closed section 9 extending in the vehicle width direction is formed between the rear end panel 7 and the lower body rigidity. In FIG. 4, reference numeral 10 denotes a resin rear bumper.

  On the other hand, a roof panel 11 is provided as a roof portion that covers the vehicle compartment and the cargo compartment 4 from above, and a roof reinforcement 12 is provided on the rear compartment side of the roof panel 11 and the roof reinforcement. Further, a rear header 13 is joined to the cargo compartment side of the ment 12 and a header closed section 14 extending in the vehicle width direction is formed between the roof panel 11 and the rear header 13 to improve the rigidity of the upper vehicle body. Yes.

Further, an opening 15 is provided in the rear wall of the vehicle body, and the opening 15 is configured to be opened and closed by the back door 1 described above.
The above-described back door 1 is configured to be openable and closable by a back door hinge (not shown) provided on the stepped-down portion 11a of the roof panel 11 corresponding to the header closed section 14, and when the back door 1 is closed. The latch 16 provided at the lower portion of the back door 1 is engaged with the striker 17 on the body side to ensure the back door closed state.
Here, the above-described striker 17 is provided at a substantially central portion in the vehicle width direction at an upper bent portion of the rear end panel 7, that is, at a portion corresponding to the rear end closed section 9.

  Next, a specific configuration of the inner panel 3 of the back door 1 will be described in detail with reference to FIGS.

2 is a rear view of the inner panel 3, and FIG. 3 is a perspective view thereof. As shown in FIGS. 2 and 3, the inner panel 3 includes an upper side 3A constituting the upper side of the windshield opening 18 and The upper side portions 3B and 3B extending downward from the left and right of the upper side portion 3A, and the lower half portion 3C connected to the lower ends of the upper side portions 3B and 3B, the lower half portion 3C Formed between the intermediate side 3D constituting the lower side of the windshield opening 18 at the middle position in the vertical direction of the door 1, the lower side 3E constituting the lower side of the back door 1, and the intermediate side 3D and the lower side 3E. The opening 19, the lower side portions 3F and 3F provided on the left and right sides of the opening 19, the vicinity of the connecting portion between the intermediate side portion 3D and the lower side portion 3F, and the lower side portion 3E. Inclined portions 3G and 3G that are inclined and joined in the direction and left and right inclined portions 3G and 3 Configured to include a respective intermediate portion of the connecting portion 3H for connecting the lower side portion 3F or bottom portion 3E, and 3H, the.
As shown in FIGS. 4 and 1, a back door window 20 is disposed in the windshield opening 18.

  As shown in FIGS. 2 and 3, hinge reinforcements 21 and 21 are integrally joined and fixed to the rear surfaces (rear surfaces) on the left and right sides of the upper side 3A. Yes.

In addition, damper reinforcements 22 and 22 are integrally joined and fixed so as to straddle the vehicle width direction end portion of the intermediate side portion 3D and the lower portion of the upper side portion 3B.
Further, a reinforcing member 23 (a so-called latch rain) that reinforces the attachment portion of the latch 16 is provided at a substantially central portion in the vehicle width direction of the lower side portion 3E.

  As shown in FIG. 3, a latch opening 24 is provided in the latch mounting portion of the lower side 3 </ b> E of the inner panel 3 of the back door 1, and the reinforcing member 23 described above is provided around the latch opening 24. It is for reinforcing.

  5 is a rear view of the reinforcing member 23, FIG. 6 is a plan view of the reinforcing member, FIG. 7 is a left side view of FIG. 5, FIG. 8 is a right side view of FIG. FIG. 3 is a perspective view showing a reinforcing structure by a reinforcing member.

As shown in FIG. 5 to FIG. 10, the reinforcing member 23 described above is located on the vehicle width direction side portion of the base portion 26 and the base portion 26 having the opening 25 corresponding to the latch opening 24. Side wall portions 27 are provided to extend and connect the inner panel 3 and the outer panel 2 in the front-rear direction.
In this embodiment, as shown in FIGS. 5 to 10, the above-described side wall portion 27 is provided on both sides of the reinforcing member 23 with the latch opening 24 (see FIG. 3) interposed therebetween.

  As shown in FIG. 6, joint flanges 27a and 27b are integrally formed on the front and rear sides of the left and right side wall portions 27 and 27, respectively, and the inner panel side joint flanges 27a and 27a ( The front side joining flange) is formed by bending inward in the vehicle width direction, and the outer panel side joining flanges 27b and 27b (rear side joining flanges) are formed by bending outward in the vehicle width direction.

Moreover, as shown in FIG. 6, the side wall parts 27 and 27 of both sides are formed so that distance may spread from the inner panel 3 side toward the outer panel 2 side. That is, the left and right side wall portions 27, 27 are formed in a C shape in plan view as shown in the figure.
Further, as shown in FIG. 5, the side wall portions 27 and 27 on both sides are formed so that the distance increases from the lower side to the upper side, and the left and right side wall portions 27 and 27 are rear views shown in FIG. In FIG.

Of the left and right side wall portions 27, 27, when the electromagnetic latch is used as the above-described latch 16, the right side wall portion 27 is formed with a recess 28 for allowing the harness to pass therethrough and in front of the base portion 26. Forming openings 29 and 29 are formed between the left and right portions and the front lower portions of the left and right side wall portions 27 and 27.
The base member 26 of the reinforcing member 23 thus configured is fixed to the periphery of the latch opening 24 in the lower side 3E of the inner panel 3 by spot welding, and the inner panel side connecting flanges 27a and 27a are connected to the inner panel. The outer panel side joining flanges 27b and 27b are joined to the outer panel 2 by spot welding.

  That is, the reinforcing member 23 described above is configured to connect the inner panel 3 and the outer panel 2. In this embodiment, the inner panel 3 and the outer panel 2 are connected to the side of the reinforcing member 23. Side wall portions 27 and 27 are integrally provided as connecting members that extend in the front-rear direction, and the left and right side wall portions 27 and 27 cover the latch 16 (see FIG. 4) from both the left and right side portions. Is provided.

  By the way, as shown in FIG. 2 and FIG. 3, a plurality of joint portions 30 that extend rearward, that is, toward the outer panel 2 side and are joined to the outer panel 2 at the lower portion of the intermediate side portion 3D in the vehicle width direction. 31 and 32 are bent and formed integrally apart from each other in the vehicle width direction.

Each of the plurality of joint portions 30, 31, and 32 is provided in a substantially linear shape in the vehicle width direction.
Each of the plurality of joints 30, 31, and 32 has a substantially horizontal portion and a bent portion integrally formed at the rear end of the substantially horizontal portion, and the bead 30a is formed in the substantially horizontal portion. , 31a, 32a are integrally formed to improve the rigidity of the joints 30, 31, 32 themselves.

Further, as shown in FIGS. 2 and 3, the upper part (that is, the position near the opening 19) in the middle in the longitudinal direction of the inclined portions 3 G and 3 G extends rearward, that is, toward the outer panel 2 side, and the outer panel 2. A pair of left and right joints 33 and 34 to be joined are integrally bent.
Each of the pair of joint portions 33 and 34 is provided substantially linearly in the vehicle width direction. In this embodiment, the joints 33, 31, and 34 are also provided substantially linearly in the vehicle width direction.

Here, each of the pair of joint portions 33 and 34 has an extension portion extending rearward and a bent portion integrally formed at the front end (rear end) of the extension portion. Beads 33a and 34a are formed integrally with each other so as to improve the rigidity of the joints 33 and 34 themselves.
Similarly, a bead 3a is also formed in the connecting portion 3H described above, so that the rigidity of the connecting portion 3H itself is improved.

The pair of joint portions 33 and 34 provided in the inclined portion 3G and the central joint portion 31 among the plurality of joint portions 30, 31, and 32 provided in the intermediate side portion 3D are shown in FIGS. As shown, the outer panel 2 is joined by spot welding, and a garnish 35 is provided on the outer side of the outer panel 2 as an example of an exterior product.
The joints 30 and 32 on both sides of the plurality of joints 30, 31 and 32 provided on the intermediate side 3 </ b> D are bonded to the outer panel 2 using an adhesive 36 (shown by a circle for convenience of illustration). It is what is done.

Further, the outer panel side joint portions 27b, 27b on the side wall portions 27, 27 on both sides of the reinforcing member 23 provided on the lower side portion 3E are license plates 37 as exterior products provided on the outer side of the outer panel 2 (see FIG. 1). ), The upper joining points c and d are joined to the outer panel 2 by spot welding, and the lower part is bonded to the outer panel 2 using an adhesive 36 (shown by a circle for convenience of illustration). It is glued to.
In the figure, reference numeral 38 denotes a door trim provided on the back door 1 on the cargo compartment 4 side. In the figure, arrow F indicates the front of the vehicle, arrow R indicates the rear of the vehicle, and arrow UP indicates the upper side of the vehicle.

  As described above, in the vehicle back door structure of the embodiment shown in FIGS. 1 to 11, the back door 1 includes the inner panel 3 and the outer panel 2, and the inner panel 3 covers the upper side of the windshield opening 18. A vehicle back door comprising an upper side 3A, an upper side 3B extending downward from the left and right sides of the upper side 3A, and a lower half 3C connected to the lower end of the upper side 3B. In the structure, the lower half 3C includes an intermediate side 3D constituting the lower side of the windshield opening 18 at an intermediate position in the vertical direction of the back door 1, and a lower side 3E constituting the lower side of the back door 1. , An opening 19 formed between the intermediate side 3D and the lower side 3E, a lower side 3F provided on the left and right sides of the opening 19, the intermediate side 3D and the lower side Near the joint with the portion 3F and the lower side And a reinforcing member 23 that is provided at an approximately central portion in the vehicle width direction of the lower side portion 3E and reinforces the attachment portion of the latch 16. (Refer to FIGS. 2 to 4).

  According to this configuration, since the opening 19 is formed between the intermediate side 3D and the lower side 3E, the opening 19 can be formed large. By providing such a large opening 19 in the lower half 3C of the inner panel 3, it is possible to reduce the weight of the inner panel 3 to the back door 1 as a whole.

Further, an inclined portion 3G for connecting the vicinity of the connecting portion between the intermediate side portion 3D and the lower side portion 3F and the lower side portion 3E in an inclined manner in the vehicle width direction, and a reinforcing member for reinforcing the attachment portion of the latch 16 23, the rigidity of the back door 1 is ensured, and the deformation around the latch mounting portion is suppressed by ensuring the rigidity, so that vibration and noise can be suppressed.
In short, it is possible to achieve both weight reduction by providing the large opening 19 and vibration and noise suppression by securing rigidity.

Further, the intermediate side portion 3D is provided with joint portions 30, 31, 32 that extend toward the outer panel 2 side and are joined to the outer panel 2 at an intermediate position in the vehicle width direction (see FIGS. 3 and 4).
According to this configuration, since the intermediate side 3D and the outer panel 2 are joined in the front-rear direction by the joints 30, 31, and 32, the rigidity of the intermediate side 3D can be ensured, whereby vibration and noise can be secured. Can be further suppressed.

Further, the inclined portion 3G is provided with joint portions 33 and 34 that extend toward the outer panel 2 and are joined to the outer panel 2 (see FIGS. 3 and 11).
According to this configuration, since the inclined portion 3G and the outer panel 2 are joined in the front-rear direction by the joint portions 33, 34, the rigidity of the inclined portion 3G can be ensured, thereby further suppressing vibration and noise. can do.

In addition, the joint portion (in this embodiment, each joint portion 30, 31, 32, or each joint portion 33, 34) is provided on a substantially straight line in the vehicle width direction (see FIG. 2).
According to this configuration, the outer panel 2 and the intermediate side portion 3D, or the outer panel 2 and the inclined portion 3G are connected via the joint portions 30, 31, 32 or the joint portions 33, 34 provided on a substantially straight line in the vehicle width direction. Since it is joined, the rigidity can be efficiently secured.

The joints 33, 31, and 34 are joined to the outer panel 2 by welding, and an exterior product (see the garnish 35) is provided on the outer side of the outer panel 2 (see FIGS. 4 and 11).
According to this configuration, since the joint portions 33, 31, and 34 and the outer panel 2 are joined by welding, rigidity can be ensured by this welding, and an exterior product (such as a weld mark or the like provided on the outer side of the outer panel 2) Since it can be covered with garnish 35), deterioration of the appearance can be prevented.

Furthermore, a connecting portion 3H that connects the intermediate portion of the inclined portion 3G and the lower side portion 3F or the lower side portion 3E is provided (see FIGS. 2 and 3).
According to this configuration, the rigidity of the inclined portion 3G can be ensured by the above-described connecting portion 3H, and thereby vibration and noise can be further suppressed.

Moreover, the reinforcing member 23 is configured to connect the inner panel 3 and the outer panel 2 (see FIG. 10).
According to this structure, since the inner panel 3 and the outer panel 2 are connected by the reinforcing member 23, the rigidity can be further improved.

Further, a connecting member (refer to the side wall portion 27) that extends and connects the inner panel 3 and the outer panel 2 in the front-rear direction is provided on the side portion of the reinforcing member 23 (see FIG. 9).
According to this configuration, since the inner panel 3 and the outer panel 2 are coupled by the coupling member (see the side wall portion 27), further rigidity can be ensured.

Further, the reinforcing member 23 is configured integrally with the connecting member (see the side wall portion 27) (see FIG. 9).
According to this configuration, since the reinforcing member 23 and the connecting member (see the side wall portion 27) are integrally formed, it is possible to achieve both reduction in the number of parts and cost reduction.

In addition, the connecting member (see the side wall 27) is provided so as to cover the latch 16 from the side (see FIGS. 2 to 4).
According to this configuration, since the latch 16 is covered from the side by the connecting member (see the side wall 27), unauthorized access to the latch 16 can be prevented and theft can be prevented.

  For example, a lever is provided to unlock the latch 16 from the access opening when the battery 16 is raised and the latch 16 does not move. This unauthorized access can be prevented by the connecting member (see the side wall portion 27).

FIG. 12 is a perspective view showing another embodiment of a reinforcing member (so-called latch rain).
5-9, the reinforcing member 23 is integrally formed with the base portion 26 and the left and right side wall portions 27, 27. However, in this embodiment shown in FIG. 26 and left and right side wall portions 27 and 27 are formed separately, and the reinforcing member 23 is configured by combining them.

If comprised in this way, since the moldability of the base part 26 and the side wall part 27 will improve, the reinforcement member 23 with a high dimensional accuracy can be obtained.
In this embodiment shown in FIG. 12 as well, the other configurations, operations, and effects are almost the same as those of the previous embodiment. Therefore, in FIG. Detailed description thereof will be omitted.
FIG. 13 is a perspective view showing still another embodiment of a reinforcing member (so-called latch rain).

In each of the previous embodiments shown in FIGS. 9 and 12, the reinforcing member 23 includes a base portion 26 and left and right side wall portions 27, 27. In this embodiment shown in FIG. The reinforcing member 23 is configured only by the portion 26.
Therefore, an opening 25 corresponding to the latch opening 24 (refer to the previous figure) is formed in the base portion 26, and an inner panel side joining flange 26a is integrally bent at the front portion of the base portion 26. The outer panel side joint flange 26b is integrally bent at the rear portion of the base portion 26.

  The inner panel side joining flange 26a is joined to the lower side 3E of the inner panel 3 by welding or adhesion, and the outer panel side joining flange 26b is joined to the outer panel 2 by welding or adhesion.

Even with this configuration, the mounting portion of the latch 16 can be reinforced by the reinforcing member 23 including the base portion 26, and the inner panel 3 and the outer panel 2 can be connected by the reinforcing member 23. Is.
In FIG. 13, the same parts as those in the previous figure are denoted by the same reference numerals, and detailed description thereof is omitted.

In the correspondence between the configuration of the present invention and the above-described embodiment,
The exterior product of this invention corresponds to the garnish 35 of the embodiment,
Similarly,
The connecting member corresponds to the side wall portion 27,
The present invention is not limited to the configuration of the above-described embodiment.

DESCRIPTION OF SYMBOLS 1 ... Back door 2 ... Outer panel 3 ... Inner panel 3A ... Upper side part 3B ... Upper side part 3C ... Lower half part 3D ... Middle side part 3E ... Lower side part 3F ... Lower side part 3G ... Inclined part 3H ... Connection part 16 ... Latch 18 ... Wind shield opening 19 ... Opening 23 ... Reinforcing member 27 ... Side wall (connecting member)
30-34 ... Joint 35 ... Garnish (exterior product)

Claims (10)

The back door has an inner panel and an outer panel,
The inner panel comprises an upper side portion constituting the upper side of the windshield opening;
An upper side portion extending downward from the left and right of the upper side portion;
A lower half portion connected to the lower end of the upper side portion, and a vehicle back door structure comprising:
The lower half is an intermediate side that forms the lower side of the windshield opening at the intermediate position in the vertical direction of the back door;
A lower side constituting the lower side of the back door;
An opening formed between the intermediate side and the lower side;
Lower side portions provided on the left and right of the opening,
In addition to being configured to include a sloped portion that joins the vicinity of the coupling portion between the intermediate side portion and the lower side portion and the lower side portion in a vehicle width direction,
A vehicle back door structure provided with a reinforcing member provided at a substantially central portion in the vehicle width direction of the lower side portion to reinforce a mounting portion of the latch. The vehicle back door structure according to claim 1, further comprising a joint portion that extends toward the outer panel and is joined to the outer panel at an intermediate position in the vehicle width direction of the intermediate side portion. The back door structure for a vehicle according to claim 1, wherein the inclined portion includes a joint portion that extends toward the outer panel and is joined to the outer panel. 4. The vehicle back door structure according to claim 2, wherein the joint portion is provided on a substantially straight line in the vehicle width direction. The joint is joined to the outer panel by welding,
The back door structure for a vehicle according to any one of claims 2 to 4, wherein an exterior product is provided on the outer side of the outer panel. The vehicle back door structure according to any one of claims 1 to 5, further comprising a connecting portion that connects an intermediate portion of the inclined portion to the lower side portion or the lower side portion. The back door structure for a vehicle according to any one of claims 1 to 6, wherein the reinforcing member is configured to connect the inner panel and the outer panel. The vehicle back door structure according to any one of claims 1 to 7, wherein a connecting member that extends and connects the inner panel and the outer panel in the front-rear direction is provided on a side portion of the reinforcing member. The back door structure for a vehicle according to claim 8, wherein the reinforcing member is integrally provided with the connecting member. The vehicle back door structure according to claim 8 or 9, wherein the connecting member is provided so as to cover the latch from a side portion.

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