Front door reinforcing structure and vehicle

Abstract

The front door reinforcing structure comprises a front door body and a supporting reinforcing pipe, the front door body is hinged to the side portion of a vehicle body, the supporting reinforcing pipe is arranged on the rear side of the interior of the front door body in the vertical direction, the lower end of the supporting reinforcing pipe is provided with an extending portion protruding towards the front side of the vehicle body, and the extending portion gradually inclines and extends towards the front lower portion. According to the front door reinforcing structure provided by the utility model, the supporting reinforcing tube plays a supporting role in the rear side of the interior of the front door body, the structural strength of the front door body is improved, the extension part located at the lower end of the front side of the supporting reinforcing tube can further enhance the supporting role of the supporting reinforcing tube, and the supporting performance of the rear area of the front door body is met; the problem that the strength of the side structure of the vehicle body is attenuated due to the fact that the vehicle does not have a B-column structure is solved, the impact resistance of the front door body is improved, and the riding safety of a driver and passengers is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of front door structures, and more specifically, relates to a front door reinforcement structure and a vehicle. Background Technique

[0002] As important load-bearing components of a vehicle, the A-pillar, B-pillar, and C-pillar of the vehicle play a crucial role. Among them, the B-pillar is the upright pillar connecting the front and rear doors of the vehicle, mainly playing a role in bridging the impact force from the side. Currently, in order to meet the usage needs of passengers, there are many vehicles without a B-pillar. This type of vehicle can provide good convenience when passengers get on and off the vehicle, and at the same time is also convenient for expanding the cockpit function, making the view of the occupants wider, bringing good convenience and freshness to the passengers.

[0003] However, vehicles without a B-pillar are relatively weaker in terms of body structure strength and stiffness compared to vehicles with a B-pillar, and it is difficult to resist the impact force suffered by the vehicle during a collision, with relatively poor overall safety performance, affecting the safety of the occupants during the ride. Content of the Utility Model

[0004] The purpose of the utility model is to provide a front door reinforcement structure and a vehicle, which can effectively improve the overall strength of the front door structure of a vehicle without a B-pillar and improve the safety of vehicle use.

[0005] To achieve the above object, the technical solution adopted by the utility model is: to provide a front door reinforcement structure, including a front door body and a support reinforcement tube. The front door body is hinged to the side of the vehicle body, and the support reinforcement tube is arranged vertically at the rear inside of the front door body. The lower end of the support reinforcement tube is provided with an extension portion protruding forward towards the front of the vehicle body, and the extension portion gradually extends obliquely forward and downward. In a possible implementation manner, a central reinforcement tube is also inserted into the support reinforcement tube, and the central reinforcement tube is connected to one side inner wall of the support reinforcement tube.

[0006] In a possible implementation manner, the support reinforcement tube includes an outer reinforcement plate and an inner reinforcement plate. The inner reinforcement plate is connected to the inner door panel of the front door body, and the inner reinforcement plate is connected to the side of the outer reinforcement plate close to the central axis of the vehicle body. The outer reinforcement plate and the inner reinforcement plate enclose a cavity that penetrates up and down to accommodate the central reinforcement tube, and the central reinforcement tube is connected to the side wall of the inner reinforcement plate, and the central reinforcement tube is located at the rear of the inner reinforcement plate.

[0007] In a possible implementation manner, the front side of the outer reinforcement plate extends obliquely inward towards the vehicle body, the front side of the inner reinforcement plate extends obliquely outward towards the vehicle body, the front side edge of the inner reinforcement plate is connected with a first flanging portion extending forward, and the front side edge of the outer reinforcement plate is connected with a second flanging portion connected to the first flanging portion.

[0008] In some embodiments, an extension plate that extends obliquely rearward and outward of the vehicle body is provided at the rear side of the inner reinforcement plate. A third flanging portion that extends obliquely rearward and outward of the vehicle body is connected to the rear side edge of the outer reinforcement plate, and the third flanging portion is connected to the front side wall of the extension plate.

[0009] In a possible implementation manner, the inner reinforcement plate and the central reinforcement tube respectively protrude upward from the outer reinforcement plate, and the upper ends of the inner reinforcement plate and the central reinforcement tube are flush. The inner reinforcement plate and the central reinforcement tube are both located at the rear side of the front window.

[0010] In a possible implementation manner, the central reinforcement tube includes a first plate body, a second plate body, a third plate body, and a fourth plate body that enclose a ring shape. The first plate body and the third plate body are arranged in parallel. The second plate body and the fourth plate body are both connected between the first plate body and the third plate body. The area of the first plate body is larger than the area of the second plate body, and the first plate body is connected to the side wall of the inner reinforcement plate.

[0011] In some embodiments, the distance between the second plate body and the fourth plate body gradually increases from the outside to the inside of the vehicle body.

[0012] In a possible implementation manner, mounting positions for installing locks are provided on the inner side wall of the support reinforcement tube. There are two mounting positions, and the two mounting positions are respectively arranged near the upper and lower ends of the support reinforcement tube. The mounting positions are located on the inner wall of the support reinforcement tube close to the central axis of the vehicle body.

[0013] In a possible implementation manner, an extension portion that protrudes forward of the vehicle body is provided at the lower end of the support reinforcement tube, and the extension portion gradually extends obliquely forward and downward.

[0014] Compared with the prior art, the solution shown in the embodiments of the present application provides a front door reinforcement structure. The support reinforcement tube forms a supporting effect inside the rear side of the front door body, improving the structural strength of the front door body. The extension portion located at the lower front side of the support reinforcement tube can further enhance the supporting effect of the support reinforcement tube, meeting the supporting performance of the rear area of the front door body, compensating for the attenuation of the structural strength of the vehicle body side caused by the absence of a B-pillar structure, enhancing the impact resistance performance of the front door body, and improving the safety of the passengers during driving.

[0015] The present utility model also provides a vehicle, and the vehicle includes a front door reinforcement structure. The support reinforcement tube of the above vehicle forms a supporting effect inside the rear side of the front door body, meeting the supporting performance of the rear area of the front door body. The extension portion located at the lower front side of the support reinforcement tube can further enhance the supporting effect of the support reinforcement tube, compensating for the attenuation of the structural strength of the vehicle body side caused by the absence of a B-pillar structure, enhancing the impact resistance performance of the front door body, and improving the safety of the passengers during driving. Description of the Drawings

[0016] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0017] Figure 1 It is a schematic top view sectional structure diagram of the front door strengthening structure provided by the embodiment of the present utility model (the outer panel of the front door is omitted);

[0018] Figure 2 For the embodiment of the present utility model Figure 1 An exploded structure diagram of the middle support strengthening tube and the central strengthening tube;

[0019] Figure 3 For the embodiment of the present utility model Figure 1 An overall structure diagram of the middle support strengthening tube and the central strengthening tube;

[0020] Figure 4 It is a schematic structure diagram after the front door strengthening structure provided by the embodiment of the present utility model is installed with the roof longitudinal beam (the outer panel of the front door and the outer strengthening plate are omitted);

[0021] Figure 5 For the embodiment of the present utility model Figure 1 A sectional structure diagram of the central strengthening tube in the embodiment.

[0022] Among them, the reference numerals in the drawings are as follows:

[0023] 11, inner panel of the front door; 2, middle support strengthening tube; 21, outer strengthening plate; 22, inner strengthening plate; 23, first flanging part; 24, second flanging part; 25, extension plate; 26, third flanging part; 27, installation position; 28, extension part; 3, central strengthening tube; 31, first plate body; 32, second plate body; 33, third plate body; 34, fourth plate body; 4, lock; 51, roof longitudinal beam. Specific embodiments

[0024] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present utility model more clearly understood, the following further details the present utility model in conjunction with the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0025] In the claims, description and above-mentioned drawings of the present utility model, the terms "front" and "rear" are in the same direction as the front and rear directions of the vehicle body, "left" and "right" are in the same direction as the left and right directions of the vehicle body, and "up" and "down" are in the same direction as the up and down directions of the vehicle body; the term "inner" refers to the direction towards the central axis of the vehicle body, and the term "outer" refers to the direction away from the central axis of the vehicle body, wherein the central axis of the vehicle body is parallel to the front and rear directions of the vehicle body. For the rest of the orientation terms, unless otherwise clearly defined, the use of terms such as "center", "lateral", "longitudinal", "horizontal", "vertical", "top", "bottom", "clockwise", "counterclockwise", "high", "low", etc. to indicate the orientation or positional relationship is based on the orientation and positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, so it should not be construed as limiting the specific protection scope of the present utility model.

[0026] Please refer to Figures 1 to 5 , and now the front door reinforcement structure and vehicle provided by the present utility model will be described. The front door reinforcement structure includes a front door body and a support reinforcement tube 2. The front door body is hinged to the side of the vehicle body. The support reinforcement tube 2 is arranged vertically inside the rear side of the front door body. The lower end of the support reinforcement tube 2 is provided with an extension part 28 protruding towards the front side of the vehicle body, and the extension part 28 gradually extends obliquely forward and downward.

[0027] Compared with the prior art, for the front door reinforcement structure provided in this embodiment, the support reinforcement tube 2 forms a supporting effect inside the rear side of the front door body, improving the structural strength of the front door body. The extension part 28 located at the lower front side of the support reinforcement tube 2 can further enhance the supporting effect of the support reinforcement tube 2, meeting the support performance of the rear part area of the front door body, making up for the attenuation of the structural strength of the side of the vehicle body caused by the absence of a B-pillar structure in the vehicle, improving the impact resistance performance of the front door body, and enhancing the safety of the passengers and drivers during driving.

[0028] In this embodiment, the extension part 28 at the lower end of the support reinforcement tube 2 can structurally reinforce the front lower corner position of the front door body, forming a stable support foundation, ensuring the reliable supporting effect of the support reinforcement tube 2, and meeting the structural support in the up and down direction of the vehicle body.

[0029] It should be noted that the inner front door panel 11 and the outer front door panel jointly enclose the front door body, providing sufficient space for the installation of the support reinforcement tube 2, enabling the support reinforcement tube 2 to form a supporting effect on the front door body.

[0030] The side part of the body of a vehicle without a B-pillar is provided with a side door opening, and the side opening is closed by a front door and a rear door of the vehicle. The front door body is hinged to the front side edge position of the side door opening, and the rear door body is slidably connected to the rear area of the side door opening. The middle part of the side door opening refers to the middle part of the side door opening in the front-rear direction, that is, the position corresponding to the installation position of the B-pillar in the original structure, and this position is also called the middle part of the vehicle side body.

[0031] The above vehicle adopts a structure without a B-pillar, which provides good convenience for passengers to get on and off the vehicle. At the same time, it can effectively expand the functions of the cockpit, broaden the vision of the occupants, and bring good convenience and freshness to customers. Due to the absence of a B-pillar on the side of the vehicle, the front door of the vehicle adopts a structure hinged to the A-pillar of the body, and the rear door of the vehicle is opened by swinging horizontally outside the body. When the rear door of the vehicle needs to be closed, it is closed by swinging horizontally inside the body. At this time, the support and reinforcement tube 2 swings with the front door body to a position adjacent to the rear door of the vehicle, and the support and reinforcement tube 2 forms an upper support effect in the middle part of the vehicle side body, playing an effect similar to that of a B-pillar, effectively improving the vehicle's ability to resist side impacts.

[0032] In a possible implementation manner, please refer to Figures 1 to 5 together. A central reinforcement tube 3 is also inserted into the support and reinforcement tube 2, and the central reinforcement tube 3 is connected to one side inner wall of the support and reinforcement tube 2.

[0033] In this embodiment, a central reinforcement tube 3 is also inserted into the support and reinforcement tube 2, and the two together form a double-layer reinforcement structure, ensuring the support effect on the front door body. The central reinforcement tube 3 is made by hot gas expansion forming. According to the principle of metal plastic deformation, the tube blank is heated in hot gas expansion forming, and under the action of high air pressure, the tube blank generates flow deformation in the mold to form a high-strength pipe fitting. The pipe obtained by the above method has high reliability in use. Compared with the traditional methods of casting, forging and welding, there is no weld seam generated, and the hot gas expansion forming method also improves the production efficiency of the pipe.

[0034] In some possible implementation manners, the above-mentioned support and reinforcement tube 2 adopts the structure as Figures 1 to 2 shown. Refer to Figures 1 to 2 . The support and reinforcement tube 2 includes an outer reinforcement plate 21 and an inner reinforcement plate 22. The inner reinforcement plate 22 is connected to the inner panel 11 of the front door body of the front door. The inner reinforcement plate 22 is connected to the side of the outer reinforcement plate 21 close to the vehicle body central axis. The outer reinforcement plate 21 and the inner reinforcement plate 22 enclose a cavity that penetrates up and down to accommodate the central reinforcement tube 3. The central reinforcement tube 3 is connected to the side wall of the inner reinforcement plate 22, and the central reinforcement tube 3 is located at the rear of the inner reinforcement plate 22.

[0035] In this embodiment, the support and reinforcement tube 2 adopts a form in which an outer reinforcement plate 21 and an inner reinforcement plate 22 are joined together. The two can be connected by connectors such as bolts, screws, rivets, etc., or can be connected by welding. The outer reinforcement plate 21 and the inner reinforcement plate 22 can enclose a cavity that penetrates up and down, and then the central reinforcement tube 3 can be arranged in position and installed in structure. After the central reinforcement tube 3 is installed on the support and reinforcement tube 2, it can be connected to the inner reinforcement plate 22 or the outer reinforcement plate 21, or can be connected to the inner reinforcement plate 22 and the outer reinforcement plate 21 respectively, all of which can ensure the reliability of the structural connection.

[0036] In some possible implementation manners, the above-mentioned feature that the outer reinforcement plate 21 adopts Figures 1 to 2 the structure shown. Refer to Figures 1 to 2 , the front side of the outer reinforcement plate 21 extends obliquely towards the inside of the vehicle body, the front side of the inner reinforcement plate 22 extends obliquely towards the outside of the vehicle body, a first flanging part 23 extending forward is connected to the front side edge of the inner reinforcement plate 22, and a second flanging part 24 connected to the first flanging part 23 is connected to the front side edge of the outer reinforcement plate 21.

[0037] In this embodiment, the first flanging part 23 of the inner reinforcement plate 22 can be mutually attached and welded to the second flanging part 24 of the outer reinforcement plate 21 to realize a reliable connection between the inner reinforcement plate 22 and the outer reinforcement plate 21. The settings of the first flanging part 23 and the second flanging part 24 effectively increase the connection area between the inner reinforcement plate 22 and the outer reinforcement plate 21, ensure the reliability of the connection between the two, and combined with the setting of the central reinforcement tube 3 inside the support and reinforcement tube 2, form an effective support in the up and down directions, and improve the vehicle's ability to resist side impacts.

[0038] In some embodiments, the above-mentioned feature that the inner reinforcement plate 22 can adopt Figures 1 to 2 the structure shown. Refer to Figures 1 to 2 , an extension plate 25 extending obliquely towards the rear outside of the vehicle body is provided on the rear side of the inner reinforcement plate 22, a third flanging part 26 extending obliquely towards the rear outside of the vehicle body is connected to the rear side edge of the outer reinforcement plate 21, and the third flanging part 26 is connected to the front side wall of the extension plate 25.

[0039] In this embodiment, the extension plate 25 on the rear side of the inner reinforcement plate 22 extends towards the outside of the vehicle body, the rear side edge of the outer reinforcement plate 21 is connected with a third flanging part 26, and the third flanging part 26 is connected to the front side wall of the extension plate 25, so that the rear parts of the inner reinforcement plate 22 and the outer reinforcement plate 21 can be reliably connected. The setting of the third flanging part 26 increases the connection area between the outer reinforcement plate 21 and the inner reinforcement plate 22, improves the connection strength between the two, and provides a stable installation foundation for the installation of the central reinforcement tube 3.

[0040] In some possible implementation manners, the above-mentioned features that the inner reinforcement plate 22 and the central reinforcement tube 3 adopt Figures 2 to 3The structure shown. Refer to Figures 2 to 3 , the inner reinforcement plate 22 and the central reinforcement tube 3 protrude upward from the outer reinforcement plate 21 respectively, the upper ends of the inner reinforcement plate 22 and the central reinforcement tube 3 are flush, and both the inner reinforcement plate 22 and the central reinforcement tube 3 are located at the rear side of the front window.

[0041] In this embodiment, the inner reinforcement plate 22 and the central reinforcement tube 3 protrude upward from the outer reinforcement plate 21, and the upper edge of the outer reinforcement plate 21 is flush with the lower edge of the front window, realizing effective avoidance of the front window. The combination of the inner reinforcement plate 22 and the central reinforcement tube 3 forms a reliable support at the rear of the front window, avoiding the attenuation of the side structure of the vehicle due to the absence of the B-pillar structure and improving the side impact resistance of the vehicle.

[0042] In some possible implementation manners, the above-mentioned feature central reinforcement tube 3 adopts such as Figure 5 The structure shown. Refer to Figure 5 , the central reinforcement tube 3 includes a first plate body 31, a second plate body 32, a third plate body 33 and a fourth plate body 34 that enclose a ring shape, the first plate body 31 and the third plate body 33 are arranged in parallel, both the second plate body 32 and the fourth plate body 34 are connected between the first plate body 31 and the third plate body 33, the area of the first plate body 31 is larger than the area of the second plate body 32, and the first plate body 31 is connected to the side wall of the inner reinforcement plate 22.

[0043] In this embodiment, the central reinforcement tube 3 adopts the form of combination of the first plate body 31, the second plate body 32, the third plate body 33 and the fourth plate body 34. The first plate body 31 and the third plate body 33 are arranged parallel to each other, the second plate body 32 and the fourth plate body 34 are arranged in the left-right direction, and the two can adopt the form of being parallel to each other or the form of an included angle, so that the whole central reinforcement tube 3 forms a trapezoidal structure, and this trapezoidal structure can be an isosceles trapezoid or a non-isosceles trapezoid, both of which can play a good structural support effect.

[0044] Specifically, the first plate body 31 with the largest area is connected to the side wall of the inner reinforcement plate 22, which is convenient for increasing the connection area between the central reinforcement tube 3 and the support reinforcement tube 2 and ensuring the overall structural support strength of the support reinforcement tube 2 and the central reinforcement tube 3.

[0045] In some embodiments, from the outside of the vehicle body to the inside of the vehicle body, the distance between the second plate body 32 and the fourth plate body 34 gradually increases, so that the cross-section of the central reinforcement tube 3 is an isosceles trapezoidal structure, which is convenient for forming a stable structure and using the isosceles trapezoidal structure to enhance the ability of the front door body to resist side impacts.

[0046] In some possible implementation manners, the above-mentioned feature support reinforcement tube 2 adopts such as Figures 2 to 4 The structure shown. Refer to Figures 2 to 4, on the inner sidewall of the support and reinforcement tube 2, there are installation positions 27 for installing the lock 4. There are two installation positions 27, and the two installation positions 27 are respectively arranged near the upper and lower ends of the support and reinforcement tube 2. The installation positions 27 are located on the inner sidewall of the support and reinforcement tube 2 close to the vehicle body central axis.

[0047] In this embodiment, the inner sidewall of the support and reinforcement tube 2 is also provided with installation positions 27 for installing the lock 4, and the height of the installation positions 27 is selected according to the installation requirements of the lock 4. The inner reinforcement plate 22 of the support and reinforcement tube 2 extends upward to the position of the roof longitudinal beam 51. The upper end of the outer reinforcement plate 21 is lower than the inner reinforcement plate 22 and is flush with the lower edge of the rear window. The installation positions 27 are arranged on the inner reinforcement plate 22, and the lock 4 is installed on the sidewall of the inner reinforcement plate 22 away from the vehicle body central axis, ensuring the accuracy of the installation position of the lock 4 and meeting the locking requirements of the lock 4.

[0048] Specifically, for the installation requirements of the vertical lock such as the lock 4, two locks 4 need to be installed at the positions near the upper and lower ends of the inner reinforcement plate 22 respectively. The two installation positions 27 provide a reliable installation basis for the lock 4. The bottom of the inner reinforcement plate 22 is provided with a bending part bent outward towards the vehicle body. The bending part is located above the sill beam, facilitating the reliable locking of the vehicle front door and the vehicle body through the lock 4.

[0049] Based on the same inventive concept, the embodiment of the present application also provides a vehicle, and the vehicle includes a front door reinforcement structure. The support and reinforcement tube 2 of the above vehicle forms a supporting effect inside the rear of the front door body, improving the structural strength of the front door body. The extension part 28 located at the lower front side of the support and reinforcement tube 2 can further enhance the supporting effect of the support and reinforcement tube 2, meeting the supporting performance of the rear part area of the front door body, making up for the attenuation of the structural strength of the vehicle body side caused by the absence of the B-pillar structure, enhancing the impact resistance performance of the front door body, and enhancing the safety of the passengers and drivers when riding in the vehicle.

[0050] The above is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. Front door reinforcement structure, characterized in that, It includes a front door body and a support and reinforcement pipe (2). The front door body is hinged to the side of the vehicle body. The support and reinforcement pipe (2) is arranged vertically at the rear inside of the front door body. The lower end of the support and reinforcement pipe (2) is provided with an extension part (28) protruding towards the front side of the vehicle body, and the extension part (28) gradually extends obliquely forward and downward.

2. The front door reinforcement structure according to claim 1, characterized in that, A central reinforcement pipe (3) is also inserted into the support and reinforcement pipe (2), and the central reinforcement pipe (3) is connected to one inner wall of the support and reinforcement pipe (2).

3. The front door reinforcement structure according to claim 2, characterized in that, The support and reinforcement pipe (2) includes an outer reinforcement plate (21) and an inner reinforcement plate (22). The inner reinforcement plate (22) is connected to the inner panel (11) of the front door of the front door body. The inner reinforcement plate (22) is connected to the side of the outer reinforcement plate (21) close to the central axis of the vehicle body. The outer reinforcement plate (21) and the inner reinforcement plate (22) enclose a cavity that penetrates up and down to accommodate the central reinforcement pipe (3). The central reinforcement pipe (3) is connected to the side wall of the inner reinforcement plate (22), and the central reinforcement pipe (3) is located at the rear of the inner reinforcement plate (22).

4. The front door reinforcement structure according to claim 3, characterized in that, The front side of the outer reinforcement plate (21) extends obliquely towards the inside of the vehicle body, the front side of the inner reinforcement plate (22) extends obliquely towards the outside of the vehicle body, the front side edge of the inner reinforcement plate (22) is connected with a first flanging part (23) extending forward, and the front side edge of the outer reinforcement plate (21) is connected with a second flanging part (24) connected to the first flanging part (23).

5. The front door reinforcement structure according to claim 4, wherein, The rear side of the inner reinforcement plate (22) is provided with an extension plate (25) extending obliquely towards the rear outside of the vehicle body. The rear side edge of the outer reinforcement plate (21) is connected with a third flanging part (26) extending obliquely towards the rear outside of the vehicle body, and the third flanging part (26) is connected to the front side wall of the extension plate (25).

6. The front door reinforcement structure according to claim 3, characterized in that The inner reinforcement plate (22) and the central reinforcement pipe (3) respectively protrude upwards from the outer reinforcement plate (21). The upper ends of the inner reinforcement plate (22) and the central reinforcement pipe (3) are flush. The inner reinforcement plate (22) and the central reinforcement pipe (3) are both located at the rear of the front window.

7. The front door reinforcement structure according to claim 3, characterized in that, The central reinforcement pipe (3) includes a first plate body (31), a second plate body (32), a third plate body (33) and a fourth plate body (34) that enclose a ring shape. The first plate body (31) and the third plate body (33) are arranged in parallel. The second plate body (32) and the fourth plate body (34) are both connected between the first plate body (31) and the third plate body (33). The area of the first plate body (31) is larger than the area of the second plate body (32). The first plate body (31) is connected to the side wall of the inner reinforcement plate (22).

8. The front door reinforcement structure according to claim 7, characterized in that, From the outside of the vehicle body to the inside of the vehicle body, the distance between the second plate body (32) and the fourth plate body (34) gradually increases.

9. The front door reinforcement structure according to any one of claims 1-8, characterized in that, An installation position (27) for installing a lock (4) is provided on the inner side wall of the support and reinforcement tube (2). There are two such installation positions (27), and the two installation positions (27) are respectively arranged near the upper and lower ends of the support and reinforcement tube (2). The installation position (27) is located on the inner wall of the support and reinforcement tube (2) on the side close to the vehicle body central axis.

10. A vehicle, characterized in that, The vehicle includes the front door reinforcement structure according to any one of claims 1-9.

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