Back door and supporting device thereof

Abstract

The utility model discloses a back door which comprises a back door inner plate, the back door inner plate is provided with a vertical plate part and a flat plate part arranged at the bottom of the vertical plate part, the flat plate part is provided with a first lock catch mounting through hole, and a first connecting hole penetrating through the vertical plate part is formed in the position, close to the first lock catch mounting through hole, of the vertical plate part; the utility model further discloses a back door supporting device which is used for the back door and comprises a connecting piece and a supporting frame connected to the connecting piece, the supporting frame comprises a bent rod fixedly connected to the connecting piece and a supporting leg fixedly connected to the bent rod, and the connecting piece is provided with a fixed mounting hole capable of being aligned with the first connecting hole. According to the back door and the supporting device for the back door, the problem that the covered edge of the lower edge of the inner plate of the back door falls off can be solved on the premise that cost is low.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of automobile manufacturing, and particularly relates to a back door and a supporting device thereof. BACKGROUND

[0002] The back door of an automobile, also known as a trunk lid, is an openable part at the rear of the vehicle. In the process of automobile manufacturing, in order to ensure the electrophoresis effect of the vehicle body, an auxiliary supporting device is needed to prop up the back door so that the back door is in a half-open state. In the prior art, because there is no mounting point on the back door for the special connection of the auxiliary supporting device, a supporting rod is generally used to prop up the back door, one end of the supporting rod is connected with a door lock mounting hole of the back door, and the other end of the supporting rod is supported on the rear skirt of the automobile. This way, the door lock mounting hole can be directly used as the connecting point of the supporting rod, and the structure is relatively simple; however, in actual use, because the position of the door lock mounting hole is close to the lower edge of the back door, and the axis direction of the door lock mounting hole is close to the direction in which the lower edge of the back door is separated, the lower edge of the back door is prone to being separated during transportation and electrophoresis. At present, the problem of separation of the lower edge of the back door is generally solved by increasing the thickness of the back door or adding a welding point at the position where the lower edge of the back door is separated, but the overall manufacturing cost is increased. Therefore, it is urgent to improve the structure of the existing back door and the supporting device for the back door so as to solve the problem of separation of the lower edge of the back door at a lower cost. SUMMARY

[0003] Therefore, the utility model aims at providing a back door and a supporting device for the back door, which can solve the problem of separation of the lower edge of the back door at a lower cost.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a back door, comprising a back door inner plate, the back door inner plate is provided with a vertical plate part and a flat plate part arranged at the bottom of the vertical plate part, a first lock catch mounting through hole is arranged on the flat plate part, and a first connecting hole for mounting of a back door supporting device is arranged on the vertical plate part adjacent to the first lock catch mounting through hole.

[0005] Further, a lock catch reinforcing plate is further arranged, the lock catch reinforcing plate is fixedly connected to the flat plate part and is provided with a second lock catch mounting through hole aligned with the first lock catch mounting through hole.

[0006] Further, the lock catch reinforcing plate is provided with an upwardly extending upper turning edge abutting against the vertical plate part, and a second connecting hole aligned with the first connecting hole is arranged on the upper turning edge.

[0007] Further, the first connecting hole and the second connecting hole are respectively arranged as at least two in the width direction of the vehicle body.

[0008] Further, the upturned edge is provided with two groups of guide protrusions along the vehicle body width direction, and the second connecting hole is located between the two groups of guide protrusions.

[0009] Further, the guide protrusion has an arc-shaped cross section.

[0010] Further, the edges of the lock catch reinforcing plate on both sides along the vehicle body width direction are provided with vertical flanges.

[0011] The utility model also provides a back door supporting device for the back door, which comprises a connecting piece and a supporting frame connected to the connecting piece, the supporting frame comprising a bent rod fixedly connected to the connecting piece and a supporting leg fixedly connected to the bent rod, and the connecting piece is provided with a fixed mounting hole alignable with the first connecting hole.

[0012] Further, the connecting piece is a connecting plate, and the two ends and the bottom of the connecting plate in the length direction are provided with guide portions.

[0013] Further, the bent rod has an L-shaped structure, and a handle is fixedly connected to the tail end of the bent rod.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The back door can solve the problem of the edge of the back door inner plate being detached at a low cost. Specifically, a first connecting hole is arranged on the vertical plate of the back door inner plate, which can be used as a connecting installation point of an auxiliary supporting device. The first connecting hole is adjacent to the first lock catch mounting through hole, and the auxiliary supporting device can be connected to the first connecting hole through the first lock catch mounting through hole, without affecting the electrophoresis effect. The first connecting hole is arranged on the vertical plate, away from the bottom edge of the back door inner plate, and the direction of the first connecting hole is close to perpendicular to the direction of the edge of the back door inner plate, so that the decomposed force in the direction of the edge of the back door inner plate is small, which can reduce the risk of the edge of the back door inner plate being detached.

[0016] The back door supporting device has a simple structure, can be connected to the back door, and can reduce the manufacturing cost.

[0017] Other advantages, objects and features of the utility model will be described in the following description, and will be apparent to those skilled in the art based on the following description, or can be taught from the practice of the utility model. The objects and other advantages of the utility model can be achieved and obtained by the following description. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 is a schematic view of a back door structure

[0019] Figure 2 is a schematic view of a back door support device structure Figure 1 is a partial enlarged view at the circle

[0020] Figure 3 is a schematic view of a back door support device structure

[0021] Figure 4 is a schematic view of a cross-sectional structure of a back door support device installed on a back door

[0022] Reference signs: 1 - inner back door panel; 101 - vertical plate part; 102 - flat plate part; 103 - first lock mounting through hole; 104 - first connecting hole; 105 - edge covering; 2 - lock reinforcing plate; 201 - second lock mounting through hole; 202 - upward turning edge; 202a - guide protruding part; 203 - second connecting hole; 204 - vertical turning edge; 3 - connecting piece; 301 - fixed mounting hole; 302 - guide part; 4 - support frame; 401 - bent rod; 402 - support leg; 5 - handle; 6 - outer back door panel; 7 - back tail skirt. DETAILED DESCRIPTION

[0023] The embodiments of the present application will be described in detail with specific examples, and those skilled in the art can easily understand other advantages and effects of the present application from the content disclosed in the specification. The present application can also be implemented or applied by other different embodiments, and each detail in the specification can be modified or changed based on different viewpoints and applications without departing from the spirit of the present application. It should be noted that the drawings provided in the following embodiments are only used to illustrate the basic concept of the present application, and the following embodiments and features in the embodiments can be combined with each other without conflict.

[0024] Please refer to Figures 1-4The embodiment discloses a back door, which comprises a back door inner plate 1, the back door inner plate 1 is provided with a vertical plate part 101 and a flat plate part 102 arranged at the bottom of the vertical plate part 101, a first lock catch mounting through hole 103 is arranged on the flat plate part 102, and a first connecting hole 104 which penetrates through the vertical plate part 101 and can be used for mounting a back door supporting device is arranged at a position adjacent to the first lock catch mounting through hole 103 on the vertical plate part 101; of course, the back door further comprises a back door outer plate 6 and the like, the back door outer plate 6 is fixedly buckled with the back door inner plate 1 to form the back door with an inner cavity structure, and the bottom of the back door outer plate 6 is folded to complete edge covering 105 of the lower edge of the back door inner plate 1, and the part of the structure is the same as that of a conventional automobile back door, and will not be described here; here, the vertical plate part 101 and the flat plate part 102 are relative to the horizontal plane and the vertical plane in the closed state of the back door; the vertical plate part 101 and the flat plate part 102 of the back door inner plate 1 are usually an integral structure, and the first lock catch mounting through hole 103 is usually a rectangular hole, which are consistent with the structure of the existing back door inner plate 1, and will not be described here.

[0025] The back door in the structure design can solve the problem of the edge covering 105 of the lower edge of the back door inner plate 1 being pulled out at a lower cost; specifically, the first connecting hole 104 which penetrates through the vertical plate part 101 of the back door inner plate 1 can be used as a connecting mounting point of the back door supporting device, and since the first connecting hole 104 is arranged adjacent to the first lock catch mounting through hole 103, the back door supporting device can be connected with the first connecting hole 104 by being inserted from the first lock catch mounting through hole 103; without affecting the electrophoresis effect; since the first connecting hole 104 is arranged on the vertical plate part 101 and away from the edge covering 105 of the bottom edge of the back door inner plate 1, and the first connecting hole 104 is close to perpendicular to the pulling-out direction of the edge covering 105 of the lower edge of the back door inner plate 1, the component force in the pulling-out direction of the edge covering 105 of the lower edge of the back door inner plate 1 is small, which can reduce the risk of the edge covering 105 of the lower edge of the back door inner plate 1 being pulled out; the structure only needs to add a connecting hole to the back door inner plate 1, which is convenient to install, such as a bolt inserted from the first connecting hole 104 to connect the back door supporting device with the back door, which is conducive to ensuring a low cost; in addition, the first connecting hole 104 can also be used as a process hole of a back door inner trim panel, and the first connecting hole 104 is shielded by the back door inner trim panel, so that one hole has multiple uses, and the manufacturing cost is also saved.

[0026] In the embodiment, the lock reinforcing plate 2 is fixedly connected to the flat plate portion 102 and is provided with a second lock mounting through hole 201 aligned with the first lock mounting through hole 103. Specifically, the lock reinforcing plate 2 is fixed to the back door inner plate 1 by welding. The lock reinforcing plate 2 is arranged to enhance the structural strength of the lock mounting portion of the back door. The second lock mounting through hole 201 aligned with the first lock mounting through hole 103 can avoid the auxiliary supporting device, which can be inserted from the position, thereby simplifying the installation.

[0027] In the embodiment, the lock reinforcing plate 2 is provided with an upwardly extending upper turning edge 202 abutting against the vertical plate portion 101, and the upper turning edge 202 is provided with a second connecting hole 203 aligned with the first connecting hole 104. It can be understood that the upper turning edge 202 can be fixed to the vertical plate portion 101 by spot welding. In this structure, the upper turning edge 202 is designed, and the second connecting hole 203 aligned with the first connecting hole 104 is arranged on the upper turning edge 202, which can effectively enhance the structural strength of the connecting point, thereby effectively improving the structural strength of the connection between the auxiliary supporting device and the back door inner plate 1, ensuring the connection reliability. In use, the auxiliary supporting device can be connected by bolts passing through the first connecting hole 104 and the second connecting hole 203, which is convenient to install. Of course, the upper turning edge 202 can also enhance the connection reliability of the lock reinforcing plate 2 and the back door inner plate 1.

[0028] In the embodiment, the first connecting hole 104 and the second connecting hole 203 are arranged as two in the vehicle body width direction. Specifically, they are arranged as two. Arranging two can improve the reliability of the connection and installation, and ensure the stability of the auxiliary supporting device after installation.

[0029] In the embodiment, the upper turning edge 202 is provided with two groups of guide protrusions 202a in the vehicle body width direction, and the second connecting hole 203 is located between the two groups of guide protrusions 202a. It can be understood that the guide protrusions 202a are usually protruded to the back door inner cavity side to form a guide for the installation of the back door supporting device. The specific structure of the guide protrusions 202a is not limited, such as a beveled or rounded surface on the side of the guide protrusions 202a close to the second connecting hole 203, to realize the guiding effect for the installation of the back door supporting device. The two groups of guide protrusions 202a can realize the guiding effect for the installation of the auxiliary supporting device, which is conducive to the accurate and rapid positioning of the auxiliary supporting device, reduces the installation difficulty of the auxiliary supporting device, and further reduces the manufacturing cost.

[0030] In the embodiment, the guide protrusion 202a has an arc-shaped cross section. The arc-shaped guide protrusion 202a is simple in structure, easy to process, and can be integrally stamped and formed with the upper flange 202, thereby being conducive to low cost.

[0031] In the embodiment, the lock catch reinforcing plate 2 is provided with a vertical flange 204 on the edge of each side in the vehicle body width direction. The vertical flange 204 is perpendicular to the plate surface of the lock catch reinforcing plate 2. The vertical flanges 204 on the two sides are provided to enhance the rigidity of the lock catch reinforcing plate 2 and further improve the use reliability of the overall structure.

[0032] A back door supporting device for the back door described above, comprising a connecting piece 3 and a supporting frame 4 connected to the connecting piece 3, wherein the supporting frame 4 comprises a bent rod 401 fixedly connected to the connecting piece 3 and a supporting leg 402 fixedly connected to the bent rod 401, and the connecting piece 3 is provided with a fixed mounting hole 301 alignable with the first connecting hole 104; specifically, the bent rod 401 is fixedly welded to the connecting piece 3, the connecting piece 3 is preferably a connecting plate, and the fixed mounting hole 301 is preferably a threaded hole; the supporting leg 402 is arranged perpendicularly or nearly perpendicularly to the bent rod 401; the back door supporting device has a simple overall structure, is conducive to the connection and installation of the back door, and is conducive to reducing manufacturing costs; at the same time, the back door supporting device has a compact overall structure and a small size, and is conducive to lightweight design; in use, the connecting piece 3 is inserted through the first lock catch mounting through hole 103, and then the fixing of the connecting piece 3 to the back door inner panel 1 is completed through a bolt, and the supporting leg 402 can abut against the automobile rear skirt 7, thereby stably supporting the back door and keeping the back door in a half-open state, so as to ensure the normal performance of the subsequent electrophoresis process.

[0033] In the embodiment, the connecting piece 3 is a connecting plate, and the connecting plate is provided with guide portions 302 at both ends and the bottom in the length direction; specifically, the guide portions 302 are guide fillets provided at corresponding positions; the connecting plate has a simple and reliable structure, and is conducive to the distribution of the fixed mounting hole 301; the three guide portions 302 are provided to ensure the quick and accurate positioning of the connecting piece 3 during installation and improve assembly efficiency.

[0034] In the embodiment, the bent rod 401 has an L-shaped structure, and a handle 5 is fixedly connected to the tail end of the bent rod 401; the bent rod 401 having an L-shaped structure is simple in structure and is conducive to adapting to changes in the shape of the back door inner panel; the handle 5 is provided to facilitate the lifting of the back door during subsequent manufacturing processes, reduce the touching of the back door body by workers, and ensure the cleanliness of the vehicle body.

[0035] Finally, it is explained that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced by equivalents without departing from the purpose and scope of the present application. The technical solutions of the present application should be covered in the scope of the claims of the present application.

Claims

1. A back door, characterized by: The utility model relates to a back door inner plate (1) which comprises a vertical plate part (101) and a flat plate part (102) arranged at the bottom of the vertical plate part (101), wherein the flat plate part (102) is provided with a first lock mounting through hole (103), and the vertical plate part (101) is provided with a first connecting hole (104) which penetrates the vertical plate part (101) and can be used for mounting a back door support device at a position adjacent to the first lock mounting through hole (103).

2. The tailgate of claim 1, wherein: The utility model also comprises a lock reinforcing plate (2) which is fixedly connected to the flat plate part (102) and is provided with a second lock mounting through hole (201) aligned with the first lock mounting through hole (103).

3. The tailgate of claim 2, wherein: The lock reinforcing plate (2) is provided with an upwardly extending upper turning edge (202) which abuts against the vertical plate part (101), and the upper turning edge (202) is provided with a second connecting hole (203) aligned with the first connecting hole (104).

4. The tailgate of claim 3, wherein: The first connecting hole (104) and the second connecting hole (203) are respectively arranged in at least two groups along the vehicle body width direction.

5. The tailgate according to claim 3 or 4, characterized in that: The upper turning edge (202) is provided with two groups of guide protrusions (202a) along the vehicle body width direction, and the second connecting hole (203) is located between the two groups of guide protrusions (202a).

6. The tailgate of claim 5, wherein: The guide protrusions (202a) have an arc-shaped cross section.

7. The tailgate of claim 3, wherein: The edges of the lock reinforcing plate (2) on both sides along the vehicle body width direction are provided with vertical turning edges (204).

8. A back door support device for a back door according to any one of claims 1 to 7, characterized in that: The utility model relates to a connecting piece (3) and a support frame (4) connected to the connecting piece (3), wherein the support frame (4) comprises a bent rod (401) fixedly connected to the connecting piece (3) and a support leg (402) fixedly connected to the bent rod (401), and the connecting piece (3) is provided with a fixed mounting hole (301) which can be aligned with the first connecting hole (104).

9. The deck lid support arrangement of claim 8, wherein: The connecting piece (3) is a connecting plate, and the two ends and the bottom of the connecting plate in the length direction are provided with guide portions (302).

10. The deck lid support arrangement of claim 8, wherein: The bent rod (401) has an L-shaped structure, and a handle (5) is fixedly connected to the tail end of the bent rod (401).

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