Back door lock reinforcing structure and vehicle

Abstract

The utility model provides a back door lock reinforcing structure and a vehicle and belongs to the technical field of vehicle doors, the back door lock reinforcing structure comprises a reinforcing plate and supporting plates arranged on the left side and the right side of the reinforcing plate respectively, the front end of the reinforcing plate is connected with a back door inner plate, and the rear end of the reinforcing plate is connected with a back door outer plate. The supporting plate is connected between the reinforcing plate and the back door outer plate, and a triangular cavity is defined by the supporting plate, the reinforcing plate and the back door outer plate. According to the back door lock reinforcing structure, the reinforcing plate is matched with the two supporting plates, the triangular cavity is defined by the reinforcing plate, the supporting plates and the back door outer plate, and the structural stability of the back door lock reinforcing structure can be improved by means of the characteristic that a triangle has high structural stability; the failure problems such as cracking of the back door lock reinforcing structure under the jolting and accelerating working conditions are avoided, the problems that a traditional back door lock reinforcing structure is short in fatigue life and poor in installation stability are solved, and therefore the use performance of the back door lock is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of vehicle door, especially relates to a back door lock reinforcing structure, and simultaneously, the utility model relates to a vehicle with the back door lock reinforcing structure. BACKGROUND

[0002] The back door lock reinforcing plate assembly is an important part in the back door structure, has the back door lock body installation function and the effect of supporting the back door outer plate, in addition, the back door lock reinforcing plate is connected with the back door outer plate and inner plate and is a force transmission part, and the structural rigidity thereof has an extremely important effect on the stability of the back door.

[0003] The structural design of the back door lock reinforcing plate assembly in the prior art is not reasonable, when the vehicle runs on an accelerating bumpy road section, the back door shakes violently under the action of inertial force, so that the back door lock reinforcing plate assembly is prone to instability, which is not conducive to ensuring the stability of the back door lock installation, and easily causes abnormal sound in the back door lock reinforcing plate area, thereby affecting the comfort of the vehicle. UTILITY MODEL CONTENTS

[0004] Therefore, the utility model aims at providing a back door lock reinforcing structure to solve the poor stability of the back door lock reinforcing structure in the prior art.

[0005] To achieve the above-mentioned purpose, the technical scheme of the utility model is as follows:

[0006] A back door lock reinforcing structure comprises a reinforcing plate and support plates oppositely arranged on the left and right sides of the reinforcing plate.

[0007] The front end of the reinforcing plate is connected with the back door inner plate, the rear end of the reinforcing plate is connected with the back door outer plate, and the support plates are connected between the reinforcing plate and the back door outer plate and form a triangular cavity together with the reinforcing plate and the back door outer plate.

[0008] Further, the front and rear ends of the reinforcing plate are respectively provided with first and second flanges.

[0009] The first flange is connected with the back door inner plate, and the second flange is connected with the back door outer plate.

[0010] Further, in the up-down direction of the whole vehicle, the first flange is upwardly folded, and the second flange is downwardly folded.

[0011] Further, the first flange is connected with the back door inner plate through fasteners, and the fasteners connect the first flange and the back door inner plate together in the front-rear direction of the whole vehicle; and / or,

[0012] The first glue coating groove is arranged on the second flange.

[0013] Further, the first flange is provided with an upward protruding protruding part, and the protruding part is provided with a connecting part.

[0014] Further, the support plate comprises a main plate between the back door outer plate and the reinforcing plate, a third flange arranged at the bottom end of the main plate, and a fourth flange arranged at the rear end of the main plate.

[0015] The third flange is connected with the reinforcing plate, and the fourth flange is connected with the back door outer plate.

[0016] Further, in the left-right direction of the whole vehicle, the third flange is folded to the inside of the vehicle, and the fourth flange is folded to the outside of the vehicle.

[0017] Further, the fourth flange is provided with a second glue coating groove, and / or the fourth flange is provided with a weight-reducing hole.

[0018] Further, the main plate is provided with a reinforcing rib, and the reinforcing rib is extended from the third flange to intersect with the fourth flange.

[0019] Compared with the prior art, the utility model has the following advantages:

[0020] The back door lock reinforcing structure has the advantages that the support plates are arranged on the left and right sides of the reinforcing plate, the reinforcing plate, the support plates and the back door outer plate form a triangular cavity, the triangular cavity has high stability, the strength performance of the back door mounting structure is improved, the back door lock reinforcing structure is prevented from cracking and other failures under the working conditions of bumping and accelerating road sections, the problems of insufficient fatigue life, poor installation stability and easy abnormal sound of the traditional back door lock reinforcing structure are solved, and the use performance of the back door lock is ensured.

[0021] In addition, the first flange and the second flange facilitate increasing the connection area between the front end of the reinforcing plate and the inner plate of the back door and the connection area between the rear end of the reinforcing plate and the outer plate of the back door, thereby improving the connection strength between the reinforcing plate and the inner plate of the back door and the outer plate of the back door, and when an external force is impacted, the force can be better transmitted and dispersed, and the local stress concentration is reduced. In the up-down direction of the whole vehicle, the first flange is upwardly folded, and the second flange is downwardly folded, which facilitates improving the connection reliability between the reinforcing plate and the inner plate of the back door and the outer plate of the back door, and simultaneously helps to optimize the force transmission path, so that the whole back door lock reinforcing structure can more effectively bear the force from different directions. The fastener connects the first flange and the inner plate of the back door together along the front-rear direction of the whole vehicle, which can better adapt to the front-rear direction force in the process of vehicle driving, improves the stability of the connection, and reduces the risk of loosening and displacement; and the first glue groove is arranged, which facilitates arranging the glue, thereby increasing the connection strength between the second flange and the outer plate of the back door, and thereby facilitating improving the overall structural stability of the back door.

[0022] In addition, the connecting part on the protruding part provides an additional connection point for the back door lock reinforcing structure, can be more firmly connected with other related parts, and helps to improve the stability and reliability of the whole back door system. The existence of the main plate provides additional support force for the back door, which can effectively resist the extrusion and distortion of the back door caused by external force, and the third flange and the fourth flange are connected with the reinforcing plate and the outer plate of the back door respectively, thereby further enhancing the stability of the support plate and facilitating improving the supporting effect of the support plate.

[0023] Furthermore, the design that the third flange is folded inwardly into the vehicle and the fourth flange is folded outwardly out of the vehicle can more reasonably distribute the force in the left-right direction of the whole vehicle, when the vehicle is subjected to a lateral impact, the flange can disperse the force to a larger area, thereby reducing the local stress concentration and reducing the risk of damage to the back door. The second glue groove on the fourth flange facilitates connecting the fourth flange with the outer plate of the back door; and the weight-reducing hole on the fourth flange facilitates reducing the weight of the support plate. The arrangement of the reinforcing rib on the main plate can significantly improve the strength and rigidity of the support plate, so that the support plate can better bear various forces suffered by the back door in the process of use.

[0024] In addition, another purpose of the utility model is to provide a vehicle, wherein the back door lock reinforcing structure is arranged on the vehicle.

[0025] The vehicle has the back door lock reinforcing structure arranged thereon, so that the structural strength and durability of the back door lock are improved. BRIEF DESCRIPTION OF DRAWINGS

[0026] The drawings constituting a part of the utility model provide a further understanding of the utility model, and the illustrative embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute an improper limitation on the utility model. In the drawings:

[0027] Figure 1 The structural schematic view of the back door according to the embodiment one of the utility model;

[0028] Figure 2 The structural schematic view of the back door lock reinforcing structure and the back door outer plate in the connecting state according to the embodiment one of the utility model;

[0029] Figure 3 The structural schematic view of the cavity according to the embodiment one of the utility model;

[0030] Figure 4 The structural schematic view of the back door lock reinforcing structure and the back door inner plate in one perspective according to the embodiment one of the utility model;

[0031] Figure 5 The structural schematic view of the back door lock reinforcing structure and the back door inner plate in another perspective according to the embodiment one of the utility model;

[0032] Figure 6 The structural schematic view of the back door inner plate according to the embodiment one of the utility model;

[0033] Figure 7 The structural schematic view of the back door lock reinforcing structure in one perspective according to the embodiment one of the utility model;

[0034] Figure 8 The structural schematic view of the back door lock reinforcing structure in another perspective according to the embodiment one of the utility model;

[0035] Figure 9 The sectional view of A-A in Figure 8

[0036] Figure 10 The structural schematic view of the reinforcing plate according to the embodiment one of the utility model;

[0037] Figure 11 The structural schematic view of the supporting plate according to the embodiment one of the utility model.

[0038] Explanation of reference signs:

[0039] 1, back door outer plate; 2, back door inner plate; 3, reinforcing plate; 4, supporting plate;

[0040] 100, glass mounting port; 200, cavity;

[0041] 201, first part; 202, second part; 2021, front part; 2022, rear part; 203, through hole; 204, connecting arm; 2041, connecting flange; 205, through hole; ​

[0042] 301, first flange; 3011, first protrusion; 3012, protruding part; 3013, connecting hole; 3014, first mounting hole; 302, second flange; 3021, first glue applying groove; 303, fitting hole; 304, second mounting hole; 305, second protrusion; 306, long hole;

[0043] 401, main plate; 4011, reinforcing rib; 402, third flange; 403, fourth flange; 4031, third protrusion; 4032, second glue applying groove; 4033, weight-reducing hole. DETAILED DESCRIPTION

[0044] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict.

[0045] In the description of the utility model, it should be noted that the orientation words such as 'up, down, left, right, front, back' used in the embodiment are defined with the up-down direction, left-right direction and front-back direction of the automobile as the reference. Among them, the up-down direction of the automobile is also the height direction (Z direction) of the automobile, the front-back direction of the automobile is also the length direction (X direction) of the automobile, and the left-right direction of the automobile is also the width direction (Y direction) of the automobile. In addition, the terms 'first' and'second' are only for the purpose of description, and cannot be understood as indicating or implying relative importance.

[0046] In addition, in the description of the utility model, unless otherwise explicitly limited, the terms'mounting', 'connecting', 'connection' and 'connecting piece' should be understood broadly. For example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium, or the communication inside two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood in combination with specific circumstances.

[0047] The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0048] Embodiment one

[0049] The embodiment relates to a rear door lock reinforcing structure, which can improve the strength performance of the rear door lock area and solve the poor stability of the rear door lock reinforcing structure in the prior art.

[0050] In terms of overall structure, the rear door lock reinforcing structure in the embodiment includes a reinforcing plate 3 and support plates 4 arranged on the left and right sides of the reinforcing plate 3. The front end of the reinforcing plate 3 is connected to the rear door inner panel 2, the rear end of the reinforcing plate 3 is connected to the rear door outer panel 1, and the support plates 4 are connected between the reinforcing plate 3 and the rear door outer panel 1 and form a triangular cavity 200 together with the reinforcing plate 3 and the rear door outer panel 1.

[0051] The rear door lock reinforcing structure in the embodiment is arranged with the support plates 4 on the left and right sides of the reinforcing plate 3, and the reinforcing plate 3, the support plates 4 and the rear door outer panel 1 form a triangular cavity 200. The triangular shape has high stability, which helps to improve the strength and stability of the rear door lock reinforcing structure, avoid cracking and other failure problems of the rear door lock mounting structure on bumpy and accelerated road sections, solve the problems of insufficient fatigue life, poor installation stability and abnormal sound of the traditional rear door lock reinforcing plate, and thus ensure the use performance of the rear door lock.

[0052] Based on the above overall introduction, the structure of the rear door in the embodiment is shown in Figure 1 , the structure of the rear door lock and the rear door in the assembled state is shown in Figures 2 to 5 , and the exemplary structure of the rear door lock reinforcing structure is shown in Figures 7 to 11 . The rear door inner panel 2 and the rear door outer panel 1 form a mounting cavity below the glass mounting port 100, and the reinforcing plate 3, the support plates 4 and the rear door lock are arranged in the mounting cavity. The rear door inner panel 2 in the embodiment includes a first part 201 arranged below the glass mounting port 100 and extending downward along the up-down direction of the whole vehicle, and a second part 202 connected between the bottom end of the first part 201 and the rear door outer panel 1.

[0053] As shown in Figure 5 and Figure 6 , the cross section of the second part 202 is generally stepped and has a front part 2021 at the front end and a rear part 2022 connected to the rear end of the front part 2021. The front part 2021 is arranged more upward than the rear part 2022. The reinforcing plate 3 is specifically connected to the front part 2021, and the rear part 2022 is connected to the rear door outer panel 1.

[0054] To facilitate the installation of the rear door lock, three through holes 203 are arranged on the bottom of the rear door inner panel 2 along the width direction of the rear door, and a connecting arm 204 extending to the rear door outer panel 1 is arranged on the inner wall of the bottom of each through hole 203. The free end of the connecting arm 204 is connected to the rear door outer panel 1 through a connecting flange 2041. Such arrangement not only facilitates the lightweight arrangement of the rear door, but also improves the connection strength between the rear door inner panel 2 and the rear door outer panel 1.

[0055] As shown in Figure 5 The reinforcing plate 3 in the embodiment corresponds to the lower part of the through hole 203, the front half of the reinforcing plate 3 is located on the middle part of the front part 2021, the front part of the reinforcing plate 3 is connected with the front part 2021, the rear part of the reinforcing plate 3 is located above the rear part 2022 and is connected with the back door outer plate 1. In addition, a through hole 205 is arranged in the middle part of the rear part 2022 and is in communication with the mounting cavity, and the locking structure of the back door lock is exposed and arranged through the through hole 205.

[0056] As a preferred embodiment, as shown in Figure 7 and Figure 10 The first flange 301 and the second flange 302 are respectively arranged at the front end and the rear end of the reinforcing plate 3, the first flange 301 is connected with the back door inner plate 2, and the second flange 302 is connected with the back door outer plate 1. Here, the first flange 301 and the second flange 302 are beneficial to increase the connection area between the front end of the reinforcing plate 3 and the back door inner plate 2 and the connection area between the rear end of the reinforcing plate 3 and the back door outer plate 1, thereby improving the connection strength between the reinforcing plate 3 and the back door inner plate 2 and the back door outer plate 1, and better transmitting and dispersing force and reducing local stress concentration when subjected to external force impact.

[0057] Specifically, as shown in Figure 10 In the up-down direction of the whole vehicle, the first flange 301 is upwardly folded, and the second flange 302 is downwardly folded. Such arrangement is beneficial to improve the connection reliability between the reinforcing plate 3 and the back door inner plate 2 and the back door outer plate 1, and is also helpful to optimize the force transmission path, so that the whole back door lock reinforcing structure can more effectively bear the force from different directions.

[0058] As a feasible embodiment, the first flange 301 is connected with the back door inner plate 2 through fasteners, and the fasteners connect the first flange 301 and the back door inner plate 2 together in the front-rear direction of the whole vehicle. The fasteners connect the first flange 301 and the back door inner plate 2 together in the front-rear direction of the whole vehicle, which can better adapt to the force in the front-rear direction during vehicle driving, improve the stability of the connection, and reduce the risk of loosening and displacement.

[0059] In specific implementation, two fasteners are arranged at the two ends of the first flange 301, which is beneficial to improve the connection strength between the first flange 301 and the first part 201. The fasteners are arranged at the two ends of the first flange 301, and first mounting holes 3014 are respectively arranged at the two ends of the first flange 301 for the fasteners to pass through, and the fasteners can adopt products such as bolts and nuts which have fastening effect.

[0060] To further improve the use effect of the first flange 301, as shown in Figure 10As shown in FIG. 1, a plurality of first protrusions 3011 are arranged on the first flange 301 along the whole width direction of the vehicle, and the first protrusions 3011 protrude forward and are welded to the first part 201. This is conducive to further improving the connection strength between the first flange 301 and the back door inner panel 2, and the arrangement of the first protrusions 3011 can also increase the structural strength of the first flange 301.

[0061] In addition, the first flange 301 is provided with a protruding portion 3012 protruding upward, and the protruding portion 3012 is provided with a connecting portion. The connecting portion on the protruding portion 3012 provides an additional connecting point for the back door lock reinforcing structure, which can be more firmly connected with other related components, and helps to improve the stability and reliability of the whole back door system. Specifically, the protruding portion 3012 is exposed to the through hole 203 arranged in the middle, and the connecting portion includes a connecting hole 3013 arranged on the protruding portion 3012, and the back door lock is installed on the reinforcing plate 3 through the connecting hole 3013.

[0062] In this embodiment, as shown in FIG. 1, Figure 10 As shown in FIG. 1, a plurality of first protrusions 3011 are arranged on the first flange 301 along the whole width direction of the vehicle, and the first protrusions 3011 protrude forward and are welded to the first part 201. This is conducive to further improving the connection strength between the first flange 301 and the back door inner panel 2, and the arrangement of the first protrusions 3011 can also increase the structural strength of the first flange 301. Figure 10 As shown in FIG. 1, a plurality of first protrusions 3011 are arranged on the first flange 301 along the whole width direction of the vehicle, and the first protrusions 3011 protrude forward and are welded to the first part 201. This is conducive to further improving the connection strength between the first flange 301 and the back door inner panel 2, and the arrangement of the first protrusions 3011 can also increase the structural strength of the first flange 301.

[0063] As shown in FIG. 1, a plurality of first protrusions 3011 are arranged on the first flange 301 along the whole width direction of the vehicle, and the first protrusions 3011 protrude forward and are welded to the first part 201. This is conducive to further improving the connection strength between the first flange 301 and the back door inner panel 2, and the arrangement of the first protrusions 3011 can also increase the structural strength of the first flange 301. Figure 10 As shown in FIG. 1, a plurality of first protrusions 3011 are arranged on the first flange 301 along the whole width direction of the vehicle, and the first protrusions 3011 protrude forward and are welded to the first part 201. This is conducive to further improving the connection strength between the first flange 301 and the back door inner panel 2, and the arrangement of the first protrusions 3011 can also increase the structural strength of the first flange 301.

[0064] To further improve the structural strength of the reinforcing plate 3, still referring to FIG. 1, Figure 10As shown in FIG. 1, FIG. 2, and FIG. 3, the second protrusions 305 are arranged on the left and right ends of the reinforcing plate 3, and the second protrusions 305 are arranged along the front-rear direction of the vehicle. This is beneficial to the strength of the reinforcing plate 3 and the stability of force transmission. In addition, a plurality of long holes 306 are arranged on the rear end of the reinforcing plate 3 along the left-right direction of the vehicle. This is beneficial to reducing the weight of the reinforcing plate 3, thereby facilitating the lightweight design of the back door structure.

[0065] As a preferred embodiment, as shown in Figure 7 , Figure 8 and Figure 11 , the support plate 4 includes a main plate 401 located between the back door outer plate 1 and the reinforcing plate 3, a third flange 402 arranged at the bottom end of the main plate 401, and a fourth flange 403 arranged at the rear end of the main plate 401. The third flange 402 is connected to the reinforcing plate 3, and the fourth flange 403 is connected to the back door outer plate 1. The presence of the main plate 401 provides additional support to the back door, effectively resisting extrusion and distortion of the back door under external force. The third flange 402 and the fourth flange 403 are respectively connected to the reinforcing plate 3 and the back door outer plate 1, further enhancing the stability of the support plate 4 and improving the support effect of the support plate 4.

[0066] Specifically, as shown in Figure 9 and Figure 11 , in the left-right direction of the vehicle, the third flange 402 is folded inward, and the fourth flange 403 is folded outward. This arrangement makes the support plate 4 in the shape of "Z", which is simple in structure, easy to form, and has high structural stability. Here, the design of the third flange 402 folded inward and the fourth flange 403 folded outward can more reasonably distribute the force in the left-right direction of the vehicle. When the vehicle is subjected to lateral impact, the third flange 402 and the fourth flange 403 can disperse the force to a larger area, reducing local stress concentration and thus reducing the risk of damage to the back door.

[0067] As shown in Figure 3 and Figure 7 , in this embodiment, the main plate 401 of the support plate 4 is roughly triangular, and thus a triangular cavity 200 is formed between the two support plates 4, the reinforcing plate 3, and the back door outer plate 1. The triangle here refers to the cross section of the cavity 200 being triangular. This can take advantage of the high structural stability of the triangle to further improve the structural reliability of the back door lock reinforcing structure in use.

[0068] In the embodiment, the third flanging 402 is respectively overlapped on the reinforcing plate 3 and connected with the reinforcing plate 3 by welding. The third flanging 402 is preferably a long strip extending along the front-rear direction of the whole vehicle, so as to increase the connecting area and connecting strength between the third flanging 402 and the reinforcing plate 3. In particular, the third flanging 402, the front part of the reinforcing plate 3 and the front part 2021 are stacked together in the embodiment, forming a three-layer welding structure, which is beneficial to further improve the connecting strength between the reinforcing plate 3, the support plate 4 and the back door inner plate 2.

[0069] In particular, the third flanging 402, the front part of the reinforcing plate 3 and the front part 2021 are stacked together in the embodiment, forming a three-layer welding structure, which is beneficial to further improve the connecting strength between the reinforcing plate 3, the support plate 4 and the back door inner plate 2.

[0070] In the embodiment, the fourth flanging 403 is provided with a second glue groove 4032, so as to connect the fourth flanging 403 with the back door outer plate 1. As shown in Figure 11 In the embodiment, the fourth flanging 403 is provided with a second glue groove 4032, so as to connect the fourth flanging 403 with the back door outer plate 1. As shown in

[0071] In order to further improve the structural strength of the support plate 4, as shown in Figure 11 In order to further improve the structural strength of the support plate 4, as shown in

[0072] In order to solve the problem of the weak demand for reinforcement of the back door in the prior art, the fourth flanging 403 is arranged corresponding to the weak area of the back door outer plate 1 in the embodiment, so that the fourth flanging 403 can not only meet the connecting demand between the support plate 4 and the back door outer plate 1, but also be beneficial to the structural reinforcement of the weak area on the back door outer plate 1.

[0073] Considering that the positions of the weak areas on the rear door outer plate 1 are different on different vehicle models, when arranging on different vehicle models, the fourth flange 403 is still arranged corresponding to the weak area without changing the specifications of the reinforcing plate 3, as shown in Figure 9 the first included angle α formed between the main plate 401 and the third flange 402 and the second included angle β formed between the main plate 401 and the fourth flange 403 are adaptively changed to meet the use requirements of the strength improvement of the rear door outer plate 1 on different vehicle models.

[0074] The rear door lock reinforcing structure of the embodiment is beneficial to improving the strength performance of the rear door lock mounting area, so that even if the rear door shakes, the rear door lock reinforcing structure is not easy to crack, resonate and fail under the inertia force, thereby improving the fatigue durability of the rear door lock reinforcing structure, and improving the NVH performance of the vehicle and the mounting stability of the rear door lock.

[0075] Embodiment Two

[0076] The embodiment relates to a vehicle provided with the rear door lock reinforcing structure as described above.

[0077] The vehicle described in the embodiment is beneficial to improving the structural strength and durability of the rear door lock by arranging the rear door lock reinforcing structure.

[0078] The above is only a preferred embodiment of the utility model, and is not used to limit the utility model, and any modification, equivalent replacement, improvement and the like made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1.A rear door lock reinforcement structure, characterized in that: a reinforcement plate (3) and support plates (4) arranged on the left and right sides of the reinforcement plate (3) are included; a front end of the reinforcement plate (3) is connected to a rear door inner panel (2), a rear end of the reinforcement plate (3) is connected to a rear door outer panel (1), and the support plates (4) are connected between the reinforcement plate (3) and the rear door outer panel (1) and form a triangular cavity (200) with the reinforcement plate (3) and the rear door outer panel (1). 2.The rear door lock reinforcement structure according to claim 1, characterized in that: first and second flanges (301, 302) are arranged at the front and rear ends of the reinforcement plate (3), respectively; the first flange (301) is connected to the rear door inner panel (2), and the second flange (302) is connected to the rear door outer panel (1). 3.The rear door lock reinforcement structure according to claim 2, characterized in that: in a vertical direction of the vehicle, the first flange (301) is folded upward, and the second flange (302) is folded downward. 4.The rear door lock reinforcement structure according to claim 2, characterized in that: the first flange (301) is connected to the rear door inner panel (2) by a fastener, and the fastener connects the first flange (301) and the rear door inner panel (2) together in a longitudinal direction of the vehicle; and / or a first glue groove (3021) is arranged on the second flange (302). 5.The rear door lock reinforcement structure according to claim 2, characterized in that: a protruding portion (3012) protruding upward is arranged on the first flange (301), and a connecting portion is arranged on the protruding portion (3012). 6.The rear door lock reinforcement structure according to any one of claims 1 to 5, characterized in that: the support plate (4) includes a main plate (401) between the rear door outer panel (1) and the reinforcement plate (3), a third flange (402) arranged at a bottom end of the main plate (401), and a fourth flange (403) arranged at a rear end of the main plate (401); the third flange (402) is connected to the reinforcement plate (3), and the fourth flange (403) is connected to the rear door outer panel (1). 7.The rear door lock reinforcement structure according to claim 6, characterized in that: in a lateral direction of the vehicle, the third flange (402) is folded toward an inside of the vehicle, and the fourth flange (403) is folded toward an outside of the vehicle. 8.The rear door lock reinforcement structure according to claim 6, characterized in that: a second glue groove (4032) is arranged on the fourth flange (403); and / or a weight-reducing hole (4033) is arranged on the fourth flange (403). 9.The rear door lock reinforcement structure according to claim 6, characterized in that: a reinforcing rib (4011) is arranged on the main plate (401), and the reinforcing rib (4011) extends from the third flange (402) to intersect with the fourth flange (403). 10.A vehicle, characterized in that: The vehicle is provided with the back door lock reinforcing structure according to any one of claims 1 to 9. The vehicle is provided with the back door lock reinforcing structure according to any one of claims 1 to 9.

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