CN116061661A - Back door welding assembly and automobile - Google Patents

Back door welding assembly and automobile Download PDF

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Publication number
CN116061661A
CN116061661A CN202310000237.9A CN202310000237A CN116061661A CN 116061661 A CN116061661 A CN 116061661A CN 202310000237 A CN202310000237 A CN 202310000237A CN 116061661 A CN116061661 A CN 116061661A
Authority
CN
China
Prior art keywords
back door
door lock
lock reinforcement
reinforcement
backdoor
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202310000237.9A
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Chinese (zh)
Inventor
潘伟鹏
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Chongqing Changan Automobile Co Ltd
Original Assignee
Chongqing Changan Automobile Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Chongqing Changan Automobile Co Ltd filed Critical Chongqing Changan Automobile Co Ltd
Priority to CN202310000237.9A priority Critical patent/CN116061661A/en
Publication of CN116061661A publication Critical patent/CN116061661A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60J—WINDOWS, WINDSCREENS, NON-FIXED ROOFS, DOORS, OR SIMILAR DEVICES FOR VEHICLES; REMOVABLE EXTERNAL PROTECTIVE COVERINGS SPECIALLY ADAPTED FOR VEHICLES
    • B60J5/00—Doors
    • B60J5/10—Doors arranged at the vehicle rear
    • B60J5/101—Doors arranged at the vehicle rear for non-load transporting vehicles, i.e. family cars including vans
    • B60J5/107—Doors arranged at the vehicle rear for non-load transporting vehicles, i.e. family cars including vans constructional details, e.g. about door frame, panels, materials used, reinforcements
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
    • Y02T10/00—Road transport of goods or passengers
    • Y02T10/10—Internal combustion engine [ICE] based vehicles
    • Y02T10/40—Engine management systems

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Body Structure For Vehicles (AREA)

Abstract

The invention provides a back door welding assembly and an automobile, wherein the back door welding assembly comprises: a back door outer plate, a back door inner plate and a back door lock reinforcement for assembling a back door lock body; the back door lock reinforcement is connected with the back door outer plate; the back door inner plate is provided with a door opening through which the back door lock reinforcement passes, and part of the back door lock reinforcement passes through the door opening of the back door inner plate from one side outside the automobile and is in a state facing the back door outer plate, so that the back door lock reinforcement and the back door inner plate enable the axial extension line of a back door lock pin assembled on the automobile body to be perpendicular to the rotation axis of the back door hinge, and the locking direction of the back door lock body is perpendicular to the axial extension line of the back door lock pin when the back door lock body is locked.

Description

Back door welding assembly and automobile
Technical Field
The invention relates to an automobile back door system, in particular to a back door welding assembly and an automobile.
Background
In recent years, as the income level of people increases, the requirements of the appearance Yan Zhi of automobiles become more and more strict. For the automobile main engine factory, in order to attract the eyes of customers, in the processes of the finalizing of the automobile model and the research and development of products, the back sliding model and the back lifting door structure are adopted more and more. In the design of the back door system of the automobile, as shown in fig. 1, the axial extension line 1 of the lock pin engaged with the back door lock body (fixed on the back door lock reinforcement) in the back door lock pin (fixed on the automobile body) passes through the rotation axis 2 of the back door hinge vertically, so as to ensure that the locking direction of the back door lock body is completely vertical to the back door lock pin at the moment of locking, and further improve the sound quality performance of locking the back door and the durability of the back door lock. As shown in fig. 2, a conventional back door lock reinforcement 4 is located between the back door inner panel 3 and the back door outer panel, and the back door lock reinforcement 4 is welded on the back door inner panel surface to secure structural strength of the back door lock area. When the automobile is in a back sliding shape and the structure is a back lifting door, the back door hinge rotation axis 2 is closer to the front direction than the traditional back door when being observed at the side surface of the automobile, and the height is also reduced. The axial extension line 1 of the lock pin is used for ensuring that the angle between the lock pin shaft of the back door lock pin and the horizontal plane is also reduced through the back door hinge axis 2, so that the back door lock becomes more prone, and meanwhile, the back door lock also changes along with the change of the angle of the back door lock pin, so that the fan tooth lock disc of the back door lock is likely to interfere with the back door inner plate. However, the back door inner plate cannot move forward at this time, so that the stamping depth of the back door inner plate can be deepened, the stamping forming difficulty is increased, and the overall strength of the back door is reduced. Therefore, a new back door lock reinforcement structure and a back door inner plate structure are needed to be designed to solve the problem.
Disclosure of Invention
The invention aims to solve the problem that in a back door structure with a back sliding shape, a back door lock leaf tooth lock disc and a back door inner plate interfere when a back door lock locking direction is perpendicular to a lock pin axial direction.
The technical scheme of the invention is as follows:
the invention provides a back door welding assembly, which comprises:
a back door outer plate, a back door inner plate and a back door lock reinforcement for assembling a back door lock body;
the back door lock reinforcement is connected with the back door outer plate;
the back door inner plate is provided with a door opening through which the back door lock reinforcement passes, and part of the back door lock reinforcement passes through the door opening of the back door inner plate from one side outside the automobile and is in a state facing the back door outer plate, so that the back door lock reinforcement and the back door inner plate enable the axial extension line of a back door lock pin assembled on the automobile body to be perpendicular to the rotation axis of the back door hinge, and the locking direction of the back door lock body is perpendicular to the axial extension line of the back door lock pin when the back door lock body is locked.
Preferably, the back door lock reinforcement is provided with a first welding positioning hole for positioning with the back door inner plate.
Preferably, the back door lock reinforcement is provided with a plurality of first welding points which form welding with the back door inner plate.
Preferably, the back door lock reinforcement includes:
a first back door lock reinforcement and a second back door lock reinforcement for assembling the back door lock body;
the second back door lock reinforcement is stacked on the first back door lock reinforcement, and the first back door lock reinforcement is exposed through a via hole on the second back door lock reinforcement;
the first welding positioning hole is formed on the first back door reinforcement;
the first welding point is formed on the second back door lock reinforcement;
the second back door lock reinforcement has a welding surface welded to the back door outer plate.
Preferably, a glue coating groove is further formed on the end face, facing the back door outer plate, of the second back door lock reinforcement, and glue coating used for bonding with the back door outer plate is coated in the glue coating groove.
Preferably, the first back door lock reinforcement forms the cavity towards the via hole one side direction of second back door lock reinforcement, be provided with on the first back door lock reinforcement and supply back door lock body to pass and enter into the installation via hole in the cavity, be provided with on the first back door lock reinforcement and be used for realizing that the back door lock body carries out a plurality of mounting points that fix.
Preferably, an emergency unlocking opening is formed in a side wall, facing the through hole of the second back door lock reinforcement, of the cavity of the first back door lock reinforcement, and the emergency unlocking opening is exposed through an opening in the back door outer plate.
The invention also provides an automobile comprising the back door welding assembly.
The beneficial effects of the invention are as follows:
the back door lock reinforcement is penetrated through the back door inner panel by opening a door opening in a back door reinforcement region on the back door inner panel. Under the conditions that the stamping depth of the back door inner plate is not increased and the stamping process forming requirement of the back door inner plate is met, the axial extension line of the back door lock pin passes through the rotation axis of the back door hinge, and therefore the sound quality performance of the back door locking and the durability of the back door lock are ensured.
Description of the drawings:
FIG. 1 is a schematic view of a back door latch axis and a back door rotational axis;
FIG. 2 is a schematic view of a conventional back door lock stiffener;
FIG. 3 is a schematic view of a back door lock reinforcement and a back door inner panel according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a second embodiment of the present invention showing the structure of the back door lock reinforcement and the back door inner panel from the view point of the inside of the vehicle;
FIG. 5 is a schematic view of a reinforcement member for a back door lock according to an embodiment of the present invention;
FIG. 6 is a schematic structural view of a first back door lock reinforcement according to an embodiment of the present invention;
FIG. 7 is a schematic view of a second back door lock reinforcement according to an embodiment of the present invention;
in the figure, the axial extension of the 1-back door lock pin, the 2-back door hinge rotation axis, the 5-back door lock reinforcement, the 6-back door inner plate, the 51-first back door lock reinforcement, the 52-second back door lock reinforcement; 525-first welding spots, 521-second welding positioning holes, 522-second welding spots, 523-welding surfaces, 524-glue coating grooves, 511-first welding positioning holes, 512-mounting points, 513-mounting through holes and 514-emergency unlocking openings.
The specific embodiment is as follows:
the embodiment of the invention provides a back door welding assembly, which aims to solve the problem of interference between a back door lock leaf tooth lock disc and a back door inner plate caused when the locking direction of a back door lock body is vertical to the axial extension line of a back door lock pin in a back door lifting door structure with a back sliding shape. As shown in fig. 3, unlike the conventional back door lock reinforcement 4 which is located between the back door outer panel and the back door inner panel 3, the present invention opens a door opening in the back door reinforcement area on the back door inner panel 6, so that the back door lock reinforcement 5 penetrates through the back door inner panel 6 through the opened door opening (i.e., the back door lock reinforcement 5 can escape through the door opening). Under the conditions that the stamping depth of the back door inner plate 6 is not increased and the stamping process forming requirement of the back door inner plate 6 is met, the axial extension line 1 of the back door lock pin vertically passes through the back door hinge rotation axis 2, and further the sound quality performance of the back door locking and the durability of the back door lock are ensured.
Referring to fig. 3 and 4, in the present embodiment, the door opening is opened in the area of the back door inner panel 6 that cooperates with the back door lock reinforcement 5, so that the back door lock reinforcement 5 is inserted from outside the vehicle through the door opening opened in the back door inner panel 6 and into the inside of the back door inner panel 6.
In this embodiment, in order to realize the assembly of the back door lock reinforcement 5 and the back door inner plate 6, two first welding positioning holes 511 with a size of brave 10 are provided on the back door lock reinforcement 5, the back door lock reinforcement 5 is positioned with the welding fixture through the two first welding positioning holes 511, and the back door lock reinforcement 5 is welded with the back door inner plate 6 after the back door lock reinforcement 5 is positioned with the welding fixture. Finally, the back door lock body is installed on the back door lock reinforcement 5 assembled with the back door inner plate 6, so that the axial extension line 1 of the back door lock pin smoothly and vertically passes through the back door hinge rotation axis 2 under the condition that the stamping process forming requirement of the back door inner plate 6 and the integral strength of the back door welding assembly are met.
Referring to fig. 5, 6 and 7, the back door lock reinforcement 5 in this embodiment is divided into a first back door lock reinforcement 51 and a second back door lock reinforcement 52, when the back door lock reinforcement 5 is welded, the first back door lock reinforcement 51 is placed on a welding fixture, two first welding positioning holes 511 with the size of 10 on the first back door lock reinforcement 5 are positioned with the welding fixture, then the second back door lock reinforcement 52 is stacked on the first back door lock reinforcement 51, two second welding positioning holes 521 with the size of 10 are also positioned with the welding fixture on the second back door lock reinforcement 52, and finally the first back door lock reinforcement 51 and the second back door lock reinforcement 52 are welded together through 10 second welding spots 522 on the second back door lock reinforcement plate 52, so as to ensure the welding strength.
Referring to fig. 4 and 5, after the back door lock reinforcement 5 and the back door inner plate 6 are positioned on the welding jig, the back door lock reinforcement 5 and the back door inner plate 6 are welded together through 11 first welding spots 525 provided on the second back door lock reinforcement 52 to form a back door inner plate welding assembly, so that the strength of the back door inner plate welding assembly is ensured while the molding requirement of the back door inner plate stamping process is met. Referring also to fig. 5, when the back door inner panel welding assembly is fastened and hemmed with the back door outer panel, the welding surface 523 of the second back door lock reinforcement 52, which is engaged with the back door outer panel, may also be welded with the back door outer panel. Further, the second back door lock reinforcement 52 has two glue coating grooves 524 respectively on the left and right on the terminal surface towards back door planking, and glue coating groove 524 peripheral surface is 2.5mm apart from back door planking, and glue coating groove 524's groove depth is 3mm, can scribble expansion gum in glue coating groove 524 and bond with back door planking, plays the effect of supporting back door planking, has further improved back door welding assembly's intensity.
Referring to fig. 6, a cavity is formed in a direction of one side of the via hole of the first back door lock reinforcement 51 facing the second back door lock reinforcement 52, a mounting point 512 of a back door lock body is formed on the first back door lock reinforcement 51, two mounting points 512 are formed on a plane of the first back door lock reinforcement 51, one mounting point 512 is formed on a vertical face of the first back door lock reinforcement 51, the back door lock body is placed in the cavity of the back door lock reinforcement 5 facing the second back door lock reinforcement 52 through the mounting via hole 513, and the mounting points 512 of three different planes ensure the firmness of the mounting of the back door lock body. Meanwhile, an emergency unlocking opening 514 for the back door lock body is formed in the first back door lock reinforcement member 51 (the emergency unlocking opening 514 is specifically formed in a side wall of a through hole of the cavity facing the second back door lock reinforcement member 52), an opening for exposing the emergency unlocking opening 514 is formed in the back door outer plate, and under the condition that an accident occurs in a vehicle and a vehicle door cannot be normally opened, an occupant can toggle an emergency unlocking handle of the back door lock body through the emergency unlocking opening 514, so that the back door is opened for emergency avoidance.
According to the back door welding assembly provided by the invention, the back door inner plate 6 is provided with the door opening, so that the back door lock reinforcement 5 penetrates through the back door inner plate 6, the axial extension line 1 of the back door lock pin is ensured to vertically pass through the back door hinge rotation axis 2, and further the sound quality performance of the back door locking of the back door in a slip shape and the durability of the back door lock are ensured. Meanwhile, the back door lock reinforcement 5 is divided into two independent small pieces, and is rigidly connected with the inner plate and the outer plate of the back door, so that the strength of the back door welding assembly is further improved.

Claims (8)

1. A backdoor welding assembly, comprising:
a back door outer plate, a back door inner plate (6) and a back door lock reinforcement (5) for assembling a back door lock body;
the back door lock reinforcement (5) is connected with the back door outer plate;
the back door inner plate (6) is provided with a door opening through which the back door lock reinforcement (5) passes, and part of the back door lock reinforcement (5) passes through the door opening of the back door inner plate (6) from one side outside the automobile and is in a state facing to the back door outer plate, so that the back door lock reinforcement (5) and the back door inner plate (6) enable an axial extension line (1) of a back door lock pin assembled on the automobile body to be perpendicular to a back door hinge rotation axis (2), and the locking direction of the back door lock body during locking is perpendicular to the axial extension line (1) of the back door lock pin.
2. The back door welding assembly according to claim 1, wherein the back door lock reinforcement (5) is provided with a first welding positioning hole (511) for positioning with a welding jig.
3. The backdoor welding assembly of claim 2, wherein the backdoor lock reinforcement (5) is provided with a plurality of first weld points (525) that form a weld with the backdoor inner panel (6).
4. A backdoor welding assembly according to claim 3, wherein the backdoor lock reinforcement (5) comprises:
a first back door lock reinforcement (51) and a second back door lock reinforcement (52) for assembling the back door lock body;
the second back door lock reinforcement (52) is stacked on the first back door lock reinforcement (51), and the first back door lock reinforcement (51) is exposed through a via hole on the second back door lock reinforcement (52);
the first welding positioning hole (511) is formed on the first back door reinforcement (51);
the first weld (525) is formed on the second back door lock reinforcement (52);
the second back door lock reinforcement (52) has a welding surface (523) that is welded to the back door outer plate.
5. The back door welding assembly according to claim 4, wherein the end surface of the second back door lock reinforcement member (52) facing the back door outer plate is further formed with a glue coating groove (524), and glue coating for bonding with the back door outer plate is coated in the glue coating groove (524).
6. The back door welding assembly according to claim 4, wherein the first back door lock reinforcement (51) forms a cavity facing the via hole side direction of the second back door lock reinforcement (52), a mounting via hole (513) for the back door lock body to pass through into the cavity is arranged on the first back door lock reinforcement (51), and a plurality of mounting points (512) for fixing the back door lock body are arranged on the first back door lock reinforcement (51).
7. The backdoor welding assembly of claim 6, wherein an emergency unlocking port (514) is provided on a side wall of the cavity of the first backdoor lock reinforcement (51) facing the via hole of the second backdoor lock reinforcement (52), the emergency unlocking port (514) being exposed through an opening in the backdoor outer panel.
8. An automobile comprising the back door welding assembly of any one of claims 1 to 7.
CN202310000237.9A 2023-01-02 2023-01-02 Back door welding assembly and automobile Pending CN116061661A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202310000237.9A CN116061661A (en) 2023-01-02 2023-01-02 Back door welding assembly and automobile

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202310000237.9A CN116061661A (en) 2023-01-02 2023-01-02 Back door welding assembly and automobile

Publications (1)

Publication Number Publication Date
CN116061661A true CN116061661A (en) 2023-05-05

Family

ID=86179638

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202310000237.9A Pending CN116061661A (en) 2023-01-02 2023-01-02 Back door welding assembly and automobile

Country Status (1)

Country Link
CN (1) CN116061661A (en)

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