JPS6319252Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Industrial application field]

This invention relates to an improvement in the structure of an automobile back door opening.

[Prior art]

As shown in FIG. 1, the conventional back door opening structure of an automobile equipped with a back door, such as a hatchback type rear gate door, is connected to the rear of a roof panel 10, and
The roof panel 10 consists of a back door opening lower frame 12 including a standing wall 12A that is long in the roof width direction at the lower rear position of the roof panel 10, and a back door opening upper frame 14 welded to the upper side of the back door opening lower frame 12. , a back door opening frame subassembly 16 constituting a roof side portion of the back door opening 18; disposed along the widthwise outside of the roof panel 10 and the widthwise outside of the back door (not shown); A roof side inner panel 20 extending to the front of the front corner of the opening 18, a roof side outer panel 22 disposed above a portion of the roof side inner panel 20 along the widthwise outer side of the roof panel 10 and the back door, and this roof side outer panel. A quarter panel 26 located above 22 and forming a part of the quarter window opening 24, and a back door opening roof 28 forming a widthwise side part and an upper corner of the back door opening 18 are integrated. Frame subassembly 30 formed by welding
and; the roof panel 10 and the back door opening frame subassembly 16.
and frame subassembly 30 are integrally welded to each other. In the assembly process of such a back door opening structure, first, the frame subassembly 30 is assembled.
and the back door opening frame subassembly 16, and spot weld them at the welding points 32A to 32D indicated by the cross marks in FIG. The roof panel 10 is set on the welded subassembly, and the welding points 34A to 34C indicated by X marks are set.
roof panel 10 and frame subassembly 3
0 and welded together. That is, conventionally, the back door opening frame subassembly 16 had to be welded to the frame subassembly 30 before the roof panel 1 could be welded.
0 and could not be welded. For this reason, in the past, such a work order was a constraint on the main body assembly line, and the assembly process had to be divided into parts, which required additional factory space and caused an increase in vehicle model changes. There was a problem in that it required a large amount of cost to change the line to accommodate the above. Furthermore, there was also the problem that the improvement in assembly accuracy was insufficient.

[Purpose of invention]

This idea was made in view of the above-mentioned conventional problems, and it is an automobile back door opening structure that can shorten the body assembly process and improve body precision. The purpose is to provide.

[Structure of the idea]

This invention includes a back door opening lower frame which is connected to the rear of the roof panel and includes a standing wall that is long in the roof width direction at the lower rear position of the roof panel, and which is welded to the upper side of this back door opening lower frame. a back door opening frame subassembly consisting of a back door opening upper frame having a structure including a back door opening, and constituting a roof side portion of the back door opening; A roof side inner panel extending to the front of the front corner of the back door opening, a roof side outer panel disposed above the portion of this roof side inner panel along the widthwise outer side of the roof panel and the back door, and A frame subassembly formed by integrally welding a quarter panel arranged and forming a part of a quarter window opening, and a back door opening roof forming a width direction side part and an upper corner part of the back door opening. In the automobile back door opening structure, the roof panel, the back door opening frame subassembly, and the frame subassembly are integrally welded to each other; extends to the quarter window opening, and the outer end in the width direction of the back door opening roof in the frame subassembly extends to the quarter window opening to constitute a part of the roof side outer panel; Further, an inner end in the width direction of the roof side inner panel is extended to a vertical wall of the back door opening lower frame, the roof panel is welded to the back door opening upper frame, and the back door opening lower frame is welded to the back door opening upper frame. The above object is achieved by overlapping and welding the widthwise outer extension of the frame to the quarter window opening portion of the frame subassembly.

[Effect of invention]

In this invention, a back door opening frame subassembly is attached to a roof panel in advance, and the back door opening frame subassembly, which was attached to the roof panel first, is welded to the frame subassembly.

【Example】

Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the same or corresponding parts as in the conventional back door opening structure shown in FIG. 1 are given the same reference numerals as in FIG. 1, and the explanation thereof will be omitted. In this embodiment, as shown in FIG. 2, a back door opening lower frame 12 is arranged connected to the rear of a roof panel 10, and includes a standing wall 12A that is long in the roof width direction at a lower rear position of the roof panel 10. , and a back door opening frame subassembly 16 consisting of a back door opening upper frame 14 welded to the upper side of the back door opening lower frame 12 and constituting the roof side portion of the back door opening 18; a roof side inner panel 20 disposed along the widthwise outer side of the back door (not shown) and the widthwise outer side of the back door (not shown), and extending to the front of the front corner of the back door opening 18;
0, a roof side outer panel 22 disposed above the portion along the widthwise outer side of the roof panel 10 and the back door; a quarter disposed above the roof side outer panel 22 and forming a part of the quarter window opening 24; a frame subassembly 30 formed by integrally welding a panel 26 and a back door opening roof 28 that constitutes the widthwise side portions and upper corner portions of the back door opening 18; 10. In the automobile back door opening structure in which the back door opening frame subassembly 16 and the frame subassembly 30 are integrally welded to each other, the outer end in the width direction of the back door opening upper frame 14 is connected to the quarter window opening. 24 to form an extension 14A, and the outer end of the back door opening roof 28 in the frame subassembly 30 in the width direction extends to the quarter window opening 24 to form an extension 14A of the roof side outer panel 22. forming a part of the roof side inner panel 20, and the inner end in the width direction of the roof side inner panel 20,
An extension portion 20A is formed by extending to the standing wall 12A of the back door opening lower frame 12, and the roof panel 10 is attached to the welding points 34A to 34.
An extension portion 14A that is welded to the back door opening upper frame 14 at C and extends outward in the width direction of the back door opening upper frame 14.
over the quarter window opening 24 portion of the frame subassembly 30 and attach the welding point 3.
6A to 36D are welded. That is, in this embodiment, after the back door opening frame subassembly 16 is attached to the roof panel 10 in advance by forming the extension portion 14A extending outward in the width direction on the back door opening upper frame 14, Extension part 14A
can be welded to the frame subassembly 30 side, thereby making it possible to attach the back door opening frame subassembly 16 to the roof panel 10 in advance. Further, in this embodiment, the extension portion 20A of the roof side inner panel 20 is extended to the standing wall 12A of the back door opening lower frame 12, and the welding point 36E is attached to the standing wall 12A.
It is spot welded. In this embodiment, the back door opening frame subassembly 16 is attached to the roof panel 1.
Since these can be welded to the frame subassembly 30 after being attached to the frame subassembly 30 first, constraints on the main body assembly line are eliminated.
This makes it possible to assemble the main body in one step, thereby reducing the number of steps. Therefore, the factory space can be reduced and the responsiveness to model changes can be improved. Furthermore, by attaching the back door opening frame subassembly 16 to the roof panel 10 in advance, it is possible to improve the relative positional accuracy and reduce the number of assembly standard installation steps. Furthermore, in this embodiment, the outer end in the width direction of the back door opening roof 28 is extended outward and is connected to the roof side outer panel 22.
Therefore, it is possible to reduce the number of parts and improve the dimensional accuracy of the opening portion.

[Effect of the idea]

Since the present invention is constructed as described above, it is possible to attach the back door opening frame subassembly to the roof panel in advance, thereby shortening the main body assembly process and improving assembly accuracy. Has excellent effects.

[Brief explanation of the drawing]

FIG. 1 is an exploded perspective view showing a conventional back door opening structure for an automobile, and FIG. 2 is an exploded perspective view showing an embodiment of the automobile back door opening structure according to the present invention. 10... Roof panel, 12... Back door opening lower frame, 12A... Standing wall, 14
...Backdoor opening atspa frame, 1
4A...Extension part, 16...Back door opening frame subassembly, 18...Back door opening, 20...Roof side inner panel, 20A...Extension part, 22...Roof side outer panel, 24...Quarter window opening , 26... Quarter panel, 28... Back door opening roof, 30... Frame subassembly, 34A to 34C, 36A to 36E
...welding point.

Claims (1)

[Scope of utility model registration request] a back door opening lower frame that is arranged in connection with the rear of the roof panel and includes a standing wall that is long in the roof width direction at a lower rear position of the roof panel;
and a back door opening frame subassembly consisting of a back door opening upper frame welded to the upper side of the back door opening lower frame and constituting the roof side portion of the back door opening; a roof side inner panel that is arranged along the outside in the width direction of the roof panel and extends in front of the front corner of the back door opening, and arranged above the part of the roof side inner panel that runs along the outside in the width direction of the roof panel and the back door; a roof side outer panel, a quarter panel disposed above the roof side outer panel and forming a part of the quarter window opening, and a back door opening roof forming the widthwise sides and upper corners of the back door opening. and a frame subassembly formed by integrally welding the roof panel, the backdoor opening frame subassembly, and the frame subassembly to each other. , a widthwise outer end of the back door opening top frame extends to the quarter window opening, and a widthwise outer end of the back door opening trunk of the frame subassembly extends to the quarter window opening. and forming a part of the roof side outer panel, and an inner end in the width direction of the roof side inner panel extends to a vertical wall of the back door opening lower frame, and the roof panel forms a part of the back door opening lower frame. A back door opening structure for an automobile, characterized in that the back door opening upper frame is welded to the front frame, and the outer extension in the width direction of the back door opening upper frame is overlapped and welded to the quarter window opening portion of the frame subassembly. .