JP2014172464A - Vehicle read door structure, and manufacturing method for vehicle rear door - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle rear door structure that can secure degrees of freedom in design, reduce cost and weight, suppress deformation of a lamp installation portion and improve formability and yield, and to provide a manufacturing method for a vehicle rear door.SOLUTION: In s vehicle rear door structure, an outer panel 17 provided with an upper panel 21 and a lower panel 22, is divided vertically. In butted parts 41 on both sides in a vehicle width direction of the upper panel 21 are respectively formed first notches 31 opened downwards. In butted parts 45 on both sides in the vehicle width direction of the lower panel 22 are respectively formed second notches 35 opened upwards. When the butted parts 41 of the upper panel 21 and the butted parts 45 of the lower panel 22 are butted to be jointed, the first notches 31 are communicated with the second notches 35 to form opening parts 36 to be installed with a rear combination lamp 3.

Description

  The present invention relates to a vehicle rear door structure to which a rear combination lamp of a vehicle such as an automobile is attached, and a method for manufacturing a vehicle rear door to which a rear combination lamp is attached.

  As rear doors of vehicles such as automobiles, so-called flip-up type rear doors such as luggage doors such as sedans and back doors such as station wagons and minivans are known. Such a rear door generally includes an inner panel disposed on the inner side of the vehicle, an outer panel provided on the outer side of the inner panel, and a door trim provided on the inner side of the inner panel. .

  As such a rear door, for example, as shown in Patent Document 1, an upper panel and a lower panel are provided, and an upper part for attaching a rear combination lamp to the lower side of both end portions in the vehicle width direction of the upper panel. A mounting portion is formed, a lower mounting portion for mounting a rear combination lamp is formed at both ends of the lower panel in the vehicle width direction, and the mounting portion of the rear combination lamp is formed from the upper mounting portion and the lower mounting portion. A rear door is proposed in which an opening for fitting a rear combination lamp is provided in the lower mounting portion, and an outer panel is formed by welding a lower end portion of the upper panel and an upper end portion of the lower panel. ing.

  Further, as disclosed in Patent Document 2, a panel main body and a lamp mounting panel in which an opening for fitting a rear combination lamp is formed, and the panel main body and the lamp mounting panel are welded. A rear door having an outer panel is proposed.

  Further, as shown in FIG. 7, an upper panel 121 and a lower panel 122 are provided, and an attachment portion 126 for attaching a rear combination lamp is formed above both ends of the lower panel 122 in the vehicle width direction. A rear door is known in which an opening 127 for fitting a rear combination lamp into the mounting portion 126 is opened, and an outer panel 117 is formed by welding a lower end portion of the upper panel 121 and an upper end portion of the lower panel 122. It has been.

  In the rear door as shown in Patent Document 1, since the lower end portion of the upper panel and the upper end portion of the lower panel are formed linearly along the vehicle width direction, the upper panel and the lower panel are welded together. Since the joint portion is linear, the workability of the welding operation is improved.

  In the rear door as shown in Patent Document 2, the lamp mounting panel having a larger cross-sectional depth is a separate member from the panel main body, so that the moldability when press-molding the panel main body is improved and the lamp mounting panel is improved. The moldability when molding is improved.

  In addition, since the formability when the panel body is press-molded is improved, the lamp dummy portion, which is a portion where the lamp that is necessary for attaching the lamp mounting panel to the panel body, cannot shine, is reduced.

  In the rear door as shown in FIG. 7, the joint portion B where the upper panel 121 and the lower panel 122 are welded is provided along the periphery of the attachment portion 126 to which the rear combination lamp is attached. Since it becomes a shape along the parting line of the combination lamp (the shape of the rear combination lamp), the joint B can be provided according to the appearance shape of the rear combination lamp, and the degree of freedom of the appearance shape of the rear combination lamp is ensured. The

JP 2006-282104 A Japanese Patent No. 4251348

  However, the conventional rear door shown in Patent Document 1 has a problem in that the degree of freedom in designing the rear door is reduced because the rear combination lamp is arranged avoiding the straight joint.

  In addition, the conventional rear door shown in Patent Document 2 has lamp mounting panels provided at both ends in the vehicle width direction of the panel main body separately from the panel main body. As the number of parts increases, the number of spot welding points and sealer application points when the lamp mounting panel is attached to the panel body increases, resulting in an increase in cost and weight.

  Further, in the conventional rear door shown in FIG. 7, since the joint portion B is formed along the parting of the rear combination lamp, the mounting portion 126 protrudes from the upper end of the lower panel 122, and the lower panel 122 There is a risk that the mounting portion 126 may be deformed due to vibration or impact during transportation of the motor.

  Further, in the conventional rear door shown in FIG. 7, the mounting portion 126 having a large cross-sectional depth and a complicated shape is integrally formed with the lower panel 122 by press molding. However, there is a limit to improving the yield of press forming of the lower panel 122 because there is a limit to improving the formability.

  The present invention aims to solve such problems. That is, the present invention secures a degree of freedom in design, suppresses cost and weight, suppresses deformation of a mounting portion of the rear combination lamp, and improves the formability and yield, and the vehicle An object of the present invention is to provide a method for manufacturing a rear door.

  In order to solve the above problems and achieve the object, a vehicle rear door structure according to the present invention is provided with an inner panel, an outer side of the inner panel, and divided in the vertical direction. A rear door structure for a vehicle having an outer panel joined to each other, wherein the outer panel is provided with an upper panel and a lower panel, and is divided in the vertical direction, on both ends of the upper panel in the vehicle width direction. Each of the lower end portions is formed with a first cutout portion opened downward, and each of the upper end portions on both ends in the vehicle width direction of the lower panel is formed with a second cutout portion opened upward. When the lower end portion of the upper panel and the upper end portion of the lower panel are butted and joined, the first cutout portion and the second cutout portion communicate with each other to attach a rear combination lamp. It is characterized in that the opening is formed.

  A vehicle rear door structure according to a second aspect of the present invention is the vehicle rear door structure according to the first aspect, wherein the lower end portion of the upper panel and the upper end portion of the lower panel are brought into contact with each other. The junction is formed in a straight line along the vehicle width direction.

  A vehicle rear door structure according to a third aspect of the present invention is the vehicle rear door structure according to the first or second aspect, wherein the lower end portion of the upper panel and the upper end portion of the lower panel are It is characterized by being joined by laser brazing.

  According to a fourth aspect of the present invention, there is provided a vehicle rear door manufacturing method comprising: an inner panel; and an outer panel provided outside the inner panel and divided in the vertical direction and joined to each other. A method for manufacturing a rear door for a vehicle, wherein the outer panel includes an upper panel and a lower panel, and is divided in a vertical direction. 1 opening is formed, a second opening is formed on each of the upper end sides of the lower panel in the vehicle width direction, and the lower end portion of the upper panel and the upper end portion of the lower panel are abutted and joined. The lower side of the first opening is cut to form a first notch, and the upper side of the second opening is cut to form a second notch. The first notch and the second notch To communicate with It is characterized by forming an opening combination lamp is attached.

  According to the vehicle rear door structure of the present invention described in claim 1, the outer panel includes the upper panel and the lower panel and is divided in the vertical direction, and the lower ends of both ends of the upper panel in the vehicle width direction. Each of the portions is formed with a first cutout portion opened downward, and each of the upper end portions on both ends in the vehicle width direction of the lower panel is formed with a second cutout portion opened upward, When the lower end portion of the upper panel and the upper end portion of the lower panel are butted and joined, the first cutout portion and the second cutout portion communicate with each other to form an opening for attaching a rear combination lamp. Since the rear combination lamp can be attached to this opening, the rear combination lamp can be mounted more freely than before, and the design of the rear door It is possible to improve the degree of freedom.

  Further, since the outer panel is formed by abutting and joining the lower end portion of the upper panel and the upper end portion of the lower panel, the number of parts of the rear door can be reduced, and the cost and weight can be suppressed. .

  In addition, the opening for attaching the rear combination lamp is formed by communicating the first notch at the lower end of the upper panel and the second notch at the upper end of the lower panel. Since the first notch and the second notch (mounting part for attaching the rear combination lamp) do not protrude from the upper end of the lower panel, the first notch and It can suppress that a 2nd notch part (attachment part for attaching a rear combination lamp) deform | transforms.

  In addition, since the rear combination lamp is attached to the opening formed by communicating the first notch portion and the second notch portion, a mounting panel for attaching the rear combination lamp is not necessary, and a simple structure notch Since the rear combination lamp can be attached to the opening formed from the portion, the moldability of the upper panel and the lower panel is improved, and the moldability and yield of the outer panel can be improved.

  According to the rear door structure for a vehicle of the present invention described in claim 2, the joint portion obtained by abutting and joining the lower end portion of the upper panel and the upper end portion of the lower panel is linearly formed along the vehicle width direction. Since it is formed, workability at the time of abutting and joining the upper panel and the lower panel can be improved.

  According to the vehicle rear door structure of the present invention described in claim 3, since the lower end portion of the upper panel and the upper end portion of the lower panel are joined by laser brazing, compared to conventional spot welding, It is possible to increase the bonding speed, improve the bonding strength and rigidity, improve the appearance of the bonded portion, and reduce the weight.

  According to the vehicle rear door manufacturing method of the present invention described in claim 4, the outer panel includes an upper panel and a lower panel and is divided in the vertical direction, and both end sides of the upper panel in the vehicle width direction. A first opening is formed at each of the lower end sides of the lower panel, and a second opening is formed at each of the upper end sides of the lower panel in the vehicle width direction. The lower end of the upper panel and the lower panel The upper end of each of the first openings is cut and joined, and the lower side of the first opening is cut to form a first cutout, and the upper side of the second opening is cut to form a second cutout, Since the first cutout and the second cutout are communicated to form an opening to which the rear combination lamp is attached, the first opening having higher mechanical strength than the cutout before the upper panel and the lower panel are joined. And a second opening is formed From Rukoto can mechanical strength during transport of the upper panel and lower panel are greatly improved, to prevent deformation during transport.

  In addition, since the upper panel and the lower panel can be joined while maintaining significantly improved mechanical strength, deformation during joining of the upper panel and the lower panel can be prevented.

It is a top view which shows the rear part of a motor vehicle. It is a perspective view for demonstrating the state which opened the back door. It is a top view of the outer panel and inner panel which constitute a back door. It is a principal part enlarged view of the opening part for attaching a rear combination lamp. It is a top view for demonstrating the structure of an outer panel. (A) is a top view of an upper panel, (B) is a top view of a lower panel. It is a principal part enlarged view at the time of joining of an upper panel and a lower panel. It is a top view of the rear combination lamp attachment part of the conventional rear door.

  Embodiments of the present invention will be described below with reference to the accompanying drawings. The embodiments of the present invention described below are merely representative embodiments of the present invention, and the present invention is not limited to the embodiments. Therefore, the present invention can be implemented with various modifications within the scope not departing from the gist of the present invention, that is, those that can be easily conceived by those skilled in the art, substantially the same, and so-called equivalent ranges.

  FIG. 1 is a rear view of a vehicle 1 such as an automobile. FIG. 2 is a top view of the vehicle rear door (hereinafter referred to as “back door”) 2 to which the vehicle rear door structure according to the embodiment of the present invention is applied. FIG. 3 is a plan view of a state in which the outer panel 17 to which the vehicle rear door structure according to the embodiment of the present invention is applied is fixed to the inner panel 16. FIG. 4 is a plan view of the lamp mounting portion 26. FIG. 5 is a plan view of the upper panel 21 and the lower panel 22 constituting the outer panel 17.

  As shown in FIG. 1, for example, a vehicle rear door structure according to an embodiment of the present invention is applied to the rear part of a vehicle 1 such as a one-box type automobile called a station wagon or minivan. A door 2 and a rear combination lamp 3 are provided.

  The rear combination lamp 3 includes a back lamp portion 8 having a backup lamp, and a brake lamp portion 9 having a brake lamp, a turn signal lamp, and a tail lamp. As shown in FIG. Provided at both ends in the vehicle width direction of the back door 2, as shown in FIG. 2, a brake lamp portion 9 is provided at the rear pillar 12 of the vehicle 1.

  The rear combination lamp 3 has a back lamp portion 8 and a brake lamp portion 9 arranged side by side, and is formed with an integrated design that is integrally arranged. In the rear combination lamp 3, the back lamp portion 8 is fixed to the back door 2 and the brake lamp portion 9 is fixed to the rear pillar 12 by a fixture such as a bolt.

  The back lamp unit 8 and the brake lamp unit 9 include, for example, an LED (Light Emitting Diode) as a light source, a socket that holds and fixes the LED, a reflecting mirror that reflects the light of the LED, and the LED A lens that collects or scatters the light, a housing that houses the LED, the socket, the reflecting mirror, and the lens, and a back lamp portion 8 and a brake lamp portion 9 that cover the housing. A cover lens that forms an appearance design, and the lens and the reflecting mirror provide appropriate light distribution.

  The brake lamp unit 9 is provided with a red reflecting plate that reflects the light of the headlamp of the vehicle behind the cover lens, and the lens corresponding to the brake lamp is red, and the lens corresponding to the turn signal lamp. Is orange.

  The back door 2 is a so-called flip-up type rear door for a vehicle. As shown in FIG. 1, a back lamp portion 8 constituting the rear combination lamp 3 and auxiliary braking are provided outside the back door 2. A high-mount stop lamp 4 as a light and a garnish 6 for attaching the high-mount stop lamp 4 to the back door 2 are provided. As shown in FIG. A back door balancer 13 for flipping up the back door 2, a hinge 14 that rotatably supports the back door 2, and a door trim 18 are provided. A back door glass 5 is attached to the back door 2.

  As shown in FIGS. 2 and 3, the back door 2 includes an inner panel 16 disposed on the inner side of the vehicle and an outer panel 17 attached to the outer side of the inner panel 16.

  As shown in FIG. 1, the high-mount stop lamp 4 is disposed on the center line passing through the center in the vehicle width direction of the vehicle 1 in the vertical direction, and is disposed on the upper end side of the back door 2. The high-mount stop lamp 4 includes, for example, a plurality of red LEDs as a light source, and is configured such that the plurality of red LEDs are visually recognized.

  As shown in FIG. 1, the garnish 6 is provided so as to cover the upper end portion of the back door 2, and holds the high mount stop lamp 4 in the center portion. The garnish 6 is integrally formed of a synthetic resin having excellent weather resistance such as acrylonitrile-butadiene-styrene copolymer resin (ABS resin), and has a surface treatment such as a chrome plating treatment.

  As shown in FIG. 2, the back door balancer 13 is provided on each of the left and right sides in the vehicle width direction, and the right back door balancer 13 includes the upper part on the inner side of the right rear pillar 12 and the inner side of the back door 2. The left back door balancer 13 is connected to the upper part of the left rear pillar 12 on the inner side of the vehicle and the intermediate part of the left side of the back door 2 on the inner side of the vehicle, respectively. The back door balancer 13 is configured by, for example, a hydraulic cylinder that hydraulically operates a cylinder that is provided to be extendable and contractible.

  As shown in FIG. 2, the hinge 14 is provided by connecting both end sides of the upper end of the back door 2 inside the vehicle and the upper end of the opening 11. The hinge 14 is made of, for example, stainless steel and is fixed by a fixture such as a bolt.

  The back door glass 5 is fixed by an adhesive applied to the peripheral edge of the opening (see FIG. 3) 23 of the back door 2, and for example, polyvinyl butyral resin (PVB resin) is sandwiched between two plate glasses. A so-called safety glass is used, such as laminated glass that has been sandwiched and pressure-bonded, or tempered glass in which a plate glass is heated and then rapidly cooled to form a compressive stress layer on its surface.

  The inner panel 16 is formed, for example, by press-molding an automotive thin steel sheet such as a cold-rolled steel sheet for automobiles or a high-tensile steel sheet for automobiles. The inner panel 16 is integrally formed in a required form by press molding, and is hemmed and spot welded to an edge portion of the outer panel 17 described later.

  The outer panel 17 is formed, for example, by press-molding an automotive thin steel sheet such as an automotive cold-rolled steel sheet or an automotive high-tensile steel sheet. As shown in FIG. 3, the outer panel 17 includes an upper panel 21 integrally formed in a required form by press molding, and a lower panel 22 integrally formed in a required form by press molding. And the lower panel 22 are abutted and joined together.

  The upper panel 21 is hemmed and spot welded to the edge of the inner panel 16. As shown in FIGS. 3 and 4, the upper panel 21 has an opening 23 for attaching the back door glass (see FIGS. 1 and 2) 5 and an abutting portion (but abutted with and joined to the lower panel 22). 41) and a first notch 31 for attaching the back lamp 8 is provided.

  As shown in FIG. 5, the upper panel 21 includes an extension portion 30 provided at both ends of the abutting portion 41 at the end in the vehicle width direction, and a vehicle width direction of the tip portion of the abutting portion 41. And a connecting portion 29 connected to the extending portion 30 along the extension line of the connecting portion 29. After the lower panel 22 and the upper panel 21 described later are joined, the connecting portion 29 is cut off. Thus, the first notch 31 is formed from the first opening 39.

  The opening 23 is formed in a shape along the peripheral edge of the back door glass 5 and opens to a size that supports the back door glass 5 by coming into contact with the peripheral edge of the inner surface of the back door glass 5. Has been.

  As shown in FIG. 5, the abutting portion 41 is formed at the lower end of the upper panel 21 and is formed in a linear shape along the vehicle width direction. The abutting portion 41 has a tip portion bent toward the vehicle interior and is formed to face a tip portion of an abutting portion 45 of the lower panel 22 described later.

  As shown in FIGS. 3 and 4, the first cutout portion 31 is provided on both ends of the abutting portion (see FIG. 5) 41 formed in a linear shape, and is located above the back lamp portion (see FIG. 1) 8. It is formed along the shape of and is opened downward. Moreover, the 1st notch part 31 is provided in the flange part 28 hollowed in the vehicle inside, and the extension part 30 is formed in the edge part of a vehicle width direction.

  The extension portion 30 is formed to extend to a straight line extending along the vehicle width direction of the tip portion of the abutting portion 41, and the tip portion is bent toward the inside of the vehicle, and an extension portion ( (See FIG. 5).

  As shown in FIG. 4, the extension portion 30 has a front end portion and an end portion in the vehicle width direction overlapped with a flange portion (not shown) of the inner panel 16, and a paint sealer applied to the overlapped portion, The tip portion and the end portion are bonded to the flange portion of the inner panel 16.

  As the coating sealer, for example, an adhesive such as a thermosetting epoxy resin is used, and after being applied in the coating process, it is cured in the baking process. In addition, a well-known sealing material can be employ | adopted for a coating sealer, if functions, such as waterproof, dustproof, and rust prevention, are exhibited.

  The lower panel 22 is hemmed and spot welded to the edge of the inner panel 16. As shown in FIGS. 3 and 4, the lower panel 22 includes a mounting portion 24 to which a license plate (not shown) is attached, an abutting portion (see FIG. 5) 45 which is abutted against and joined to the upper panel 21, and a back surface. A second cutout portion 35 for attaching the lamp portion (see FIG. 1) 8 is provided.

  As shown in FIG. 5, the lower panel 22 has an extension 34 provided at both ends of the abutting portion 45 at the end in the vehicle width direction, and a vehicle width direction of the tip portion of the abutting portion 45. And a connecting portion 33 connected to the extending portion 34 along the extension line, and the connecting portion 33 is cut off after the upper panel 21 and the lower panel 22 are joined. .

  The mounting portion 24 has an upper end portion formed continuously with the abutting portion 45, and is formed in a rectangular shape along the outer shape of the license plate so that the license plate can be attached.

  As shown in FIG. 5, the abutting portion 45 is formed at the upper end of the lower panel 22 and is formed in a linear shape along the vehicle width direction. The abutting portion 45 is formed so that the tip end portion is bent inward of the vehicle and is opposed to the tip end portion of the abutting portion 41 of the upper panel 21.

  Thus, the abutting portion 41 of the upper panel 21 and the abutting portion 45 of the lower panel 22 are formed in a straight line shape along the vehicle width direction, and both the abutting portion 41 and the abutting portion 45 are formed. Since the front end portions of the upper panel 21 are bent toward the inside of the vehicle and face each other, the abutting portions 41 of the upper panel 21 and the abutting portion 45 of the lower panel 22 are abutted against each other by laser brazing. 45 can be easily joined.

  In laser brazing, the surface of the abutting portion 41 of the upper panel 21 and the surface of the abutting portion 45 of the lower panel 22 are irradiated with a laser beam and heated, and a wire brazing material is supplied to the laser beam irradiating portion. Thus, both the abutting portions 41 and 45 are continuously joined while the brazing material is melted with the laser beam. As the brazing material, an alloy having a lower melting point than the upper panel 21 and the lower panel 22, for example, a copper alloy or the like is used.

  Such laser brazing can locally heat only the joint portion between the abutting portion 41 of the upper panel 21 and the abutting portion 45 of the lower panel 22, thereby suppressing thermal distortion of the upper panel 21 and the lower panel 22. be able to.

  Thus, since the thermal distortion of the upper panel 21 and the lower panel 22 can be suppressed, the mechanical strength can be improved by reducing the residual stress, and the appearance of the joint portion (see FIGS. 3 and 4) B Can be suppressed.

  Further, since the abutting portion 41 of the upper panel 21, the abutting portion 45 of the lower panel 22 and the brazing material can be heated at high speed by laser beam irradiation, the upper panel 21 and the lower panel 22 are joined at high speed. Can do.

  As shown in FIGS. 3 to 5, the second notch portion 35 is provided on both ends of the abutting portion 45 formed in a straight line, and follows the shape of the lower side of the back lamp portion (see FIG. 1) 8. And is formed open upward. The second cutout portion 35 abuts the abutting portion 41 of the upper panel 21 and the abutting portion 45 of the lower panel 22, and the distal end portion of the extension portion 30 of the upper panel 21 and the distal end portion of the extension portion 34 of the lower panel 22. Are formed so as to communicate with the first notch 31 when both the abutting portions 41 and 45 and the both extended portions 30 and 34 are joined. Moreover, the 2nd notch part 35 is provided in the flange part 32 hollowed in the vehicle inside, and the extension part 34 is formed in the edge part of a vehicle width direction.

  The extension portion 34 is formed to extend to a straight line extending along the vehicle width direction of the tip portion of the abutting portion 45, and the tip portion is bent toward the inside of the vehicle, and the extension portion 30 of the upper panel 21 is formed. Is formed so as to face the front end portion.

  The extension portion 34 has a front end portion and an end portion in the vehicle width direction overlapped with a flange portion (not shown) of the inner panel 16, and the front end portion and the end portion are applied by a coating sealer applied to the overlapped portion. Are bonded to the flange portion of the inner panel 16.

  As described above, the first cutout portion 31 of the upper panel 21 is formed on both end sides of the linear abutting portion 41, and the second cutout portion 35 of the lower panel 22 is on both end sides of the linear abutment portion 45. And the first cutout portion 31 is formed along the shape of the upper side of the back lamp portion (see FIG. 1) 8 and the second cutout portion 35 is formed in the shape of the lower side of the back lamp portion 8. Further, since the first cutout portion 31 and the second cutout portion 35 are formed so as to communicate with each other, the abutment portion 41 and the extension portion 30 of the upper panel 21 and the abutment portion of the lower panel 22 are formed. As shown in FIG. 4, when the outer panel 17 and the extension portion 34 are brought into contact with each other and joined, the back lamp portion 8 along the shape of the back lamp portion 8 is provided at both ends of the outer panel 17 in the vehicle width direction. Attach Opening 36 is formed of.

  Since the back lamp portion 8 can be attached to the opening 36 formed in this way, the attachment panel is attached to the outer panel 17 as compared with a conventional rear door that requires an attachment panel in addition to the upper panel 21 and the lower panel 22. Since spot welding and application of a sealer to be attached to the lens are omitted and the number of parts is reduced, the cost can be reduced and the weight can be reduced.

  Moreover, since the opening part 36 for attaching the back lamp part 8 is formed in the both ends of the junction part B, a back lamp is avoided compared with the conventional rear door in which the back lamp part 8 is arrange | positioned avoiding the junction part B. Since the freedom degree of arrangement | positioning of the part 8 becomes high, the freedom degree of the design of the back door 2 can be improved.

  Further, when the opening 36 for attaching the back lamp portion 8 is brought into contact with the abutting portion 41 and the extension portion 30 of the upper panel 21 and the abutting portion 45 and the extension portion 34 of the lower panel 22, the upper portion is joined. First cutout portions 31 provided at both ends of the abutting portion 41 of the panel 21 and opened below the upper panel 21, and provided at both ends of the abutting portion 45 of the lower panel 22 and above the lower panel 22 Since the first notch 31 and the extension 30 do not protrude from the lower end of the upper panel 21 and the second notch 35 is opened from the upper end of the lower panel 22. Since the extension portion 34 does not protrude, the second and lower panels 22 and 22 are transported when the upper panel 21 and the lower panel 22 are transported. A notch 31 and the extension 30, and the second cut portion 35 and the extension 34 can be prevented from being deformed by vibration or impact.

  As shown in FIGS. 3 and 4, an extension 30 is formed by providing a first notch 31 in the flange 28 of the upper panel 21, and a second notch in the flange 32 of the lower panel 22. Since the extension portion 34 is formed by providing 35, the back lamp portion 8 is attached as compared with the conventional rear door in which the attachment portion having a complicated shape for attaching the back lamp portion 8 is integrally formed by press molding. Since the structure of the opening 36 for this purpose is simplified, the formability of press molding can be improved, and the yield of press molding can be improved.

  Further, since the annular lamp mounting portion 26 is formed by the opening 36 in which the first cutout portion 31 and the second cutout portion 35 communicate with each other, the mechanical strength of the lamp mounting portion 26 can be increased, and the back lamp portion. 8 can be firmly fixed to the lamp mounting portion 26.

  Next, a method for manufacturing the back door 2 according to an embodiment of the present invention configured as described above will be described with reference to FIGS.

  As shown in FIG. 5, the upper panel 21 is provided on both ends in the vehicle width direction on the extension portion 30 and on the extension line in the vehicle width direction of the abutting portion 41 and connected to the extension portion 30. 29 and a first opening 39 formed between the extension portion 30 and the connecting portion 29 and is integrally formed by press molding, and the lower panel 22 has both ends in the vehicle width direction. On the side, the extension portion 34 is provided on the extension line in the vehicle width direction of the abutting portion 45 and is connected to the extension portion 34, and is sandwiched between the extension portion 34 and the connection portion 33. The second opening 40 is formed and is integrally formed by press molding.

  The upper panel 21 and the lower panel 22 that are integrally formed in this manner are butted together, the joined portions are joined by laser brazing, and the upper panel 21 and the lower panel 22 are joined to form the outer panel 17.

  At this time, as shown in FIG. 6, the joint portion B between the upper panel 21 and the lower panel 22 is formed by joining the butting portion 41 of the upper panel 21 and the butting portion 45 of the lower panel 22, and the upper panel. The distal end portion of the extension portion 30 of 21 and the distal end portion of the extension portion 34 of the lower panel 22 are joined and formed.

  Subsequently, both connecting portions 29 and 33 are cut out along the cutting lines a and b indicated by broken lines in the drawing, and as shown in FIG. 4, an opening 36 to which the back lamp portion (see FIG. 1) 8 is attached is formed. Form.

  At this time, since the joint portion B is formed between the butted portions 41 and 45 and the extended portions 30 and 34, the mechanical strength of the butted portions 41 and 45 and the extended portions 30 and 34 is greatly improved. Therefore, it is possible to suppress the deformation of the both butted portions 41 and 45 and the two extended portions 30 and 34 when the both connecting portions 29 and 33 are cut along the cutting lines a and b.

  Subsequently, as shown in FIG. 3, the outer panel 17 formed by joining the upper panel 21 and the lower panel 22 and the inner panel 16 are fixed by hemming and spot welding.

  Subsequently, as shown in FIGS. 1 and 2, the back lamp portion 8, the garnish 6, the high-mount stop lamp 4, the back door glass 5, the back door trim 18 and the like are assembled to form the back door 2, and a wire (not shown) A harness or the like is wired and the back door 2 is attached to the vehicle 1 by the hinge 14 and the back door balancer 13 so as to be flipped up.

  As described above, the vehicle rear door structure according to an embodiment of the present invention includes an inner panel 16 and an outer panel that is provided on the vehicle exterior side of the inner panel 16 and is divided in the vertical direction and joined to each other. A rear door structure for a vehicle having a panel 17, wherein the outer panel 17 includes an upper panel 21 and a lower panel 22 and is divided in a vertical direction, and a vehicle width direction of an abutting portion 41 of the upper panel 21 First notch portions 31 that are opened downward are formed on both ends of each of the two, and second notches that are opened upward are formed on both ends in the vehicle width direction of the abutting portion 45 of the lower panel 22. When the portion 35 is formed and the abutting portion 41 of the upper panel 21 and the abutting portion 45 of the lower panel 22 are abutted and joined, Said second cutout portion 35 and the first cut-out portion 31 is characterized in that the opening 36 for attaching the back lamps portion 8 of the rear combination lamp 3 communicates is formed.

  As described above, the outer panel 17 includes the upper panel 21 and the lower panel 22 and is divided in the vertical direction, and is opened downward to each of the abutting portions 41 on both ends in the vehicle width direction of the upper panel 21. A first notch 31 is formed, and a second notch 35 opened upward is formed in each of the abutting portions 45 on both ends of the lower panel 22 in the vehicle width direction. When the abutting part 41 and the abutting part 45 of the lower panel 22 are abutted and joined, the first notch part 31 and the second notch part 35 communicate with each other to attach the back lamp part 8 36 is formed, the back lamp portion 8 can be attached to the opening 36, so that the rear combination lamp 3 can be attached more than before. Increases the degree of freedom of location, it is possible to improve the degree of freedom of the back door 2 design.

  Moreover, since the outer panel 17 is formed by abutting and joining the abutting portion 41 of the upper panel 21 and the abutting portion 45 of the lower panel 22, the number of parts of the back door 2 can be reduced, and the cost can be reduced. And can reduce the weight.

  Further, the opening 36 for attaching the back lamp portion 8 is formed by communication between the first notch 31 of the abutting portion 41 of the upper panel 21 and the second notch 35 of the abutting portion 45 of the lower panel 22. Therefore, the first notch 31 and the second notch 35 (attachment part for attaching the back lamp part 8) do not protrude from the abutting part 41 of the upper panel 21 and the abutting part 45 of the lower panel 22. It can suppress that the 1st notch part 31 and the 2nd notch part 35 (attachment part for attaching the back lamp part 8) deform | transform by receiving a vibration, an impact, etc. at the time of transportation.

  In addition, since the back lamp portion 8 is attached to the opening portion 36 formed by communicating the first notch portion 31 and the second notch portion 35, a mounting panel for attaching the back lamp portion 8 becomes unnecessary, Since the back lamp portion 8 can be attached to the opening portion 36 formed by the both cutout portions 31 and 35 having a simple structure, the formability of the upper panel 21 and the lower panel 22 is improved, and the outer panel 17 Formability and yield can be improved.

  Further, in the vehicle rear door structure according to the embodiment of the present invention, the joining portion B in which the abutting portion 41 of the upper panel 21 and the abutting portion 45 of the lower panel 22 are brought into contact with each other is joined along the vehicle width direction. Therefore, the workability when the upper panel 21 and the lower panel 22 are brought into contact with each other can be improved.

  Further, in the vehicle rear door structure according to the embodiment of the present invention, the abutting portion 41 of the upper panel 21 and the abutting portion 45 of the lower panel 22 are joined by laser brazing. In comparison with this, it is possible to increase the bonding speed, improve the bonding strength and rigidity, improve the appearance of the bonded portion, and reduce the weight.

  In the method for manufacturing the back door 2 according to the embodiment of the present invention, the outer panel 17 includes the upper panel 21 and the lower panel 22 and is divided in the vertical direction. A first opening 39 is formed on each of the abutting portions 41 side, and a second opening 40 is formed on each of the abutting portion 45 sides on both ends of the lower panel 22 in the vehicle width direction. The butting portion 41 of the panel 21 and the butting portion 45 of the lower panel 22 are butted and joined, and the connecting portion 29 located below the first opening 39 is cut to form the first notch portion 31. The connecting portion 33 located above the second opening 40 is cut to form a second cutout portion 35, and the first cutout portion 31 and the second cutout portion 35 are communicated with each other to provide a back lamp. 8 is formed, the first opening 39 and the second opening 40 are formed before the upper panel 21 and the lower panel 22 are joined. Is greatly improved, and deformation of the upper panel and the lower panel during transportation can be prevented.

  Moreover, since the upper panel 21 and the lower panel 22 can be joined while maintaining significantly improved mechanical strength, deformation during joining of the upper panel 21 and the lower panel 22 can be prevented.

  In the above-described embodiment of the present invention, the back door 2 to which the vehicle rear door structure according to the present invention is applied has been described. . That is, the vehicle rear door structure according to the present invention can be applied to a rear door provided with a part of a rear combination lamp and provided in a flip-up manner at the rear of the vehicle.

  Further, in the embodiment of the present invention, the case where the back lamp portion 8 is attached to the opening portion 36 has been described. However, at least a part of the lamps constituting the rear combination lamp 3 may be attached to the opening portion 36, Further, a rear combination lamp 3 may be attached.

  The rear door structure for a vehicle and the rear door for a vehicle according to the present invention can be used as a rear door of a vehicle such as an automobile, ensuring freedom of design, reducing cost and weight, and suppressing deformation of a lamp mounting portion. And it can utilize as a rear door which can improve a moldability and a yield.

1 Vehicle 2 Back door (rear door)
3 Rear combination lamp 8 Back lamp section (rear combination lamp)
16 Inner panel 17 Outer panel 21 Upper panel (upper panel)
22 Lower panel (lower panel)
26 Lamp mounting portion 29 Connection portion 30 Extension portion 31 First notch portion 33 Connection portion 34 Extension portion 35 Second notch portion 36 Opening portion 39 First opening 40 Second opening 41 Abutting portion (lower end portion)
45 Butting part (upper end)
B joint

Claims (4)

A vehicle rear door structure having an inner panel and an outer panel provided on the outer side of the inner panel and divided in the vertical direction and joined to each other,
The outer panel is divided in the vertical direction with an upper panel and a lower panel,
Each of the lower ends of both ends of the upper panel in the vehicle width direction is formed with a first cutout portion opened downward,
Each of the upper ends of both ends in the vehicle width direction of the lower panel is formed with a second cutout portion opened upward,
When the lower end portion of the upper panel and the upper end portion of the lower panel are butted and joined, the first cutout portion and the second cutout portion communicate with each other to form an opening for attaching a rear combination lamp. A rear door structure for a vehicle characterized by being provided.   2. The vehicle according to claim 1, wherein a joint portion formed by abutting and joining the lower end portion of the upper panel and the upper end portion of the lower panel is formed linearly along the vehicle width direction. Rear door structure.   The vehicle rear door structure according to claim 1 or 2, wherein a lower end portion of the upper panel and an upper end portion of the lower panel are joined by laser brazing. A vehicle rear door manufacturing method comprising an inner panel and an outer panel provided on the outer side of the inner panel and split in the vertical direction and joined to each other,
The outer panel is divided in the vertical direction with an upper panel and a lower panel,
A first opening is formed in each of the lower end sides on both ends in the vehicle width direction of the upper panel,
A second opening is formed on each of the upper end sides of the lower panel in the vehicle width direction,
Butt and join the lower end of the upper panel and the upper end of the lower panel,
Excising the lower side of the first opening to form a first notch, excising the upper side of the second opening to form a second notch,
A method for manufacturing a rear door for a vehicle, wherein the first cutout portion and the second cutout portion are communicated to form an opening to which a rear combination lamp is attached.

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