Frame structure of a vehicle

Abstract

The present invention relates to a frame structure of a vehicle, comprising a first member composed of a metal plate, and a second member composed of a metal plate thinner than the metal plate of the first member, the second member being integrally connected to the first member by welding. A connecting portion between the first member and the second member has an inclined surface configured to connect an upper surface of the first member and an upper surface of the second member obliquely such that the upper surface of the second member is positioned lower than the upper surface of the first member in a gradual manner.

Description

[0001] Cross-references to related applications

[0002] This application claims the benefit of patent application No. 10-2020-0178595 filed on December 18, 2020, with the Korean Intellectual Property Office, the entire contents of which are incorporated herein by reference. Technical Field

[0003] This invention relates to a vehicle frame structure that can reduce weight and increase rigidity. Background Technology

[0004] The frame of a vehicle is typically formed by processing metal sheets and then joining the processed metal sheets together.

[0005] For example, refer to Figure 1 This illustrates the structure of a door frame for a vehicle door assembly, providing a method for manufacturing the door frame 130 of a door assembly 100 by welding individual components together. Specifically, the fan-shaped reinforcing frame 131, the B-pillar frame 132 (here, the B-pillar frame is the frame adjacent to the B-pillar at the door assembly), the roof frame 133, and the inner belt track 134 are each individually machined and then welded together. Each of the metal sheets of different thicknesses and materials is first machined to have the required rigidity for the fan-shaped reinforcing frame 131, the B-pillar frame 132, the roof frame 133, and the inner belt track 134, and then the fan-shaped reinforcing frame 131, the B-pillar frame 132, the roof frame 133, and the inner belt track 134 are welded together to manufacture the door frame 130.

[0006] However, during the individual manufacturing of the sector-shaped reinforcing frame 131, B-pillar frame 132, roof frame 133, and inner belt track 134, each component generates distribution, and during the welding of the sector-shaped reinforcing frame 131, B-pillar frame 132, roof frame 133, and inner belt track 134, assembly distribution occurs. Due to the accumulation of this distribution, quality problems arise, such as uneven clearances, wind or road noise being introduced into the interior, or reduced watertightness. In other words, as... Figure 2 and Figure 3 As shown, a glass guide channel 150 is installed in the door frame 130 and the inner panel 120. Due to the step formed on the side of the door frame 130 and the space (S) formed between the glass guide channel 150, wind noise or road noise is introduced into the interior, and moisture seeps into the space (S), thereby reducing the water tightness.

[0007] like Figure 4As shown, the door frame 230 of the door assembly 200 is manufactured as a single component, and can then be manufactured by adding and welding reinforcing members to certain portions thereof. The door frame 230 is formed from a metal sheet of the same material and thickness, and the rigidity of the door frame 230 is then enhanced by welding reinforcing members such as a fan-shaped reinforcing frame 231 or a latching reinforcing frame 232 to manufacture the door frame 230.

[0008] However, in this case, due to imperfect matching of the reinforcing components, the reinforcing components may not be applicable to narrow sections, and the welding torch may not be able to enter, making it impossible to apply the reinforcing components to all sections that require reinforcement. In order to improve rigidity, increasing the thickness of the door frame 230 results in an excessive increase in weight.

[0009] The background description is provided to help understand the background of the present invention and may include content previously unknown to those skilled in the art. Summary of the Invention

[0010] The present invention is designed to solve the above-mentioned problems. The purpose of the present invention is to provide a vehicle frame structure that enables each component to be manufactured with optimal thickness and material and to eliminate dispersion.

[0011] Another object of the present invention is to provide a vehicle frame structure that can solve problems such as sealing and noise introduction caused by steps in various components.

[0012] A vehicle frame structure according to the invention for achieving the above-mentioned objectives includes: a first member and a second member, the first member being composed of a metal plate, and the second member being composed of a metal plate with a thickness thinner than that of the metal plate of the first member, the second member being integrally connected to the first member by welding. The connection portion between the first member and the second member has an inclined surface, the inclined surface being configured to obliquely connect the upper surface of the first member and the upper surface of the second member, such that the upper surface of the second member is positioned at a gradually decreasing angle below the upper surface of the first member.

[0013] The inclined surface is formed by arranging and welding the upper surfaces of the first component and the upper surfaces of the second component at the same height, and then molding the upper surface of the first component to be higher than the upper surface of the second component.

[0014] With the first component and the second component welded together, the upper surface of the first component is molded by pressure processing to be higher than the upper surface of the second component.

[0015] The end that contacts the first component and the portion of the second component adjacent to it are inclined surfaces.

[0016] The height of the inclined surface is the difference between the thicknesses of the first component and the second component.

[0017] The upper surface of the first component is molded to be higher than the upper surface of the second component, such that the bottom surfaces of the first and second components are at the same height. The panel component is bonded to the bottom surfaces of the first and second components, and the paint fills the space formed between the first component, the second component, and the panel component.

[0018] The inclined surface is formed by arranging and welding the bottom surfaces of the first component and the second component at the same height, and then removing the end of the first component at an inclined angle.

[0019] The inclined surface is formed by grinding the portion of the first component that contacts the second component.

[0020] The inclined surface is formed to connect the upper surface of the first component and the upper surface of the second component.

[0021] An inclined surface is formed by arranging and welding the bottom surfaces of the first component and the second component at the same height, forming a weld at the joint between the first component and the second component, and then removing a portion of the weld at an inclined angle.

[0022] The inclined surface is formed by grinding the weld seam.

[0023] The weld is formed at the end of the second component that contacts the first component.

[0024] The weld is formed by soft welding.

[0025] The first component is one of the fan-shaped reinforcing frame and the B-pillar frame that constitute the door assembly, and the second component is one of the roof frame or the inner belt track that is attached to the fan-shaped reinforcing frame or the B-pillar frame.

[0026] The first component and the second component are welded together by tailor welded blank (TWB).

[0027] According to another aspect of the present invention, the frame structure of a vehicle may include: a first component, a second component, and a glass guide channel; the first component is composed of a metal plate; the second component is formed of a metal plate with a thickness thinner than that of the metal plate of the first component, and the second component is integrally connected to the first component by welding; the glass guide channel is arranged in the portion where the first component and the second component are connected in a stepped manner.

[0028] A protrusion is formed on the outside of the glass guide channel, protruding from the surface of the glass guide channel to fill the portion thereon where a step is formed between the first and second components.

[0029] Hollow holes are formed inside the protruding part of the glass guide groove.

[0030] The first component is one of the fan-shaped reinforcing frame and the B-pillar frame that constitute the door assembly, and the second component is one of the roof frame or the inner belt track that is attached to the fan-shaped reinforcing frame or the B-pillar frame.

[0031] The first component and the second component are welded together by welding with a weld plate (TWB).

[0032] The frame structure of the vehicle of the present invention having the structure described above can achieve lightweight and have sufficient rigidity.

[0033] Furthermore, it can reduce the dispersion generated during the manufacturing of vehicle frames, thereby improving quality and reducing waste, thus saving material consumption.

[0034] In addition, it can reduce wind noise or road noise generated at the step sections between components and improve water tightness. Attached Figure Description

[0035] Figure 1 This is a schematic diagram showing the frame structure of a vehicle according to the prior art.

[0036] Figure 2 It is along Figure 1 The cross-sectional view obtained by line II shown.

[0037] Figure 3 It is a cross-sectional view showing the state in which a space is formed between the door frame and the glass guide channel by a thickness step in the frame structure of a vehicle according to the prior art.

[0038] Figure 4 This is a schematic diagram illustrating the frame structure of a vehicle according to another example of the prior art.

[0039] Figure 5 This is a perspective view showing a door assembly to which the frame structure of a vehicle according to the present invention is applied.

[0040] Figure 6 This is an exploded perspective view showing a door assembly of a vehicle with a frame structure according to the present invention.

[0041] Figure 7 This is a plan view showing the frame structure of the vehicle according to the present invention.

[0042] Figures 8A to 8C This is a schematic diagram illustrating the manufacturing process of the frame structure of a vehicle according to a first exemplary embodiment of the present invention. Figure 8D This is a cross-sectional view showing the frame structure of a vehicle according to a first exemplary embodiment of the present invention.

[0043] Figures 9A to 9C This is a schematic diagram illustrating the manufacturing process of the frame structure of a vehicle according to a second exemplary embodiment of the present invention. Figure 9D This is a cross-sectional view showing the frame structure of a vehicle according to a second exemplary embodiment of the present invention.

[0044] Figures 10A to 10C This is a schematic diagram illustrating the manufacturing process of the frame structure of a vehicle according to a third exemplary embodiment of the present invention. Figure 10D This is a cross-sectional view showing the frame structure of a vehicle according to a third exemplary embodiment of the present invention.

[0045] Figure 11A This is a cross-sectional view showing the frame structure of a vehicle according to a fourth exemplary embodiment of the present invention. Figure 11B It is along Figure 11A The cross-sectional view of the frame structure obtained by line III-III shown is as follows. Figure 11C This is a cross-sectional view showing the glass guide channel applied to the frame structure of a vehicle according to a fourth exemplary embodiment of the present invention. Detailed Implementation

[0046] The frame structure of the vehicle according to the present invention will now be described in detail with reference to the accompanying drawings.

[0047] The vehicle frame structure according to the invention includes a first member 31 formed of a metal sheet, a second member 33 formed of a metal sheet thinner than the metal sheet of the first member 31 and welded to the first member 31, and an inclined surface 35 that is inclinedly connected to the upper surface of the first member 31 and the upper surface of the second member 33 to be lower toward the second member 33. The inclined surface 35 is included in the portion where the first member 31 and the second member 33 are joined, or in the portion where the steps are filled with glass guide grooves 50.

[0048] Here, the cross-section of the inclined surface 35 (which connects the upper surface of the first member 31 and the upper surface of the second member 33) can be formed as a slant line, a curve, or a mixture of slant lines and curves. In addition, the portion adjacent to the inclined surface 35 can be a plane parallel to the upper surface of the first member 31 or the upper surface of the second member 33.

[0049] Hereinafter, in order to understand the frame structure of the vehicle according to the present invention, the door frame 30 applied to the door assembly 1 of the vehicle will be described as an example.

[0050] like Figure 6 As shown, the door assembly 1 is made by connecting the outer panel 10 and the inner panel 20, and in order to enhance rigidity, the door frame 30, the outer belt track 41, the hinge reinforcement 42, and the latch reinforcement 43 are fastened; for airtightness, the glass guide channel 50 is assembled.

[0051] refer to Figure 7 The door frame 30 is manufactured by separately manufacturing the quadrant reinforce frame 31, the B-pillar frame 32, the roof frame 33, and the inner belt track 34, and then welding the connecting parts (W) together.

[0052] Specifically, according to the present invention, each component constituting the frame can be joined by welding, and each component is welded by tuned weld plate (TWB) welding. Specifically, TWB laser welding using a laser is preferred. TWB welding is a technique for cutting and welding metal plates of various materials and thicknesses into desired shapes. Therefore, the fan-shaped reinforcing frame 31, B-pillar frame 32, roof frame 33, and inner belt track 34 are cut and processed using metal plates of different thicknesses, and then welded using TWB laser welding.

[0053] Therefore, by cutting and welding metal sheets not only to reflect the car-line but also to reflect the oblique or curved shape according to the final product shape, the metal sheets can be utilized to the maximum extent, thereby minimizing waste. That is, taking the door frame 30 as an example, the fan-shaped reinforcing frame 31 is cut and processed according to each shape of the roof frame 33 and the inner belt track 34, and then welded such that the fan-shaped reinforcing frame 31 is joined to the roof frame 33 and the inner belt frame 34 along the vertical car-line (see line L1-L1), and the B-pillar frame 32 is joined to the roof frame 33 and the inner belt track 34 along the oblique line (see line L2-L2).

[0054] In addition, in the case of Figure 7 In the cross-section shown by line II-II, a step is created due to the thickness difference between the components constituting the door frame 30, resulting in problems caused by the step (wind noise, road noise, reduced water tightness). These problems can be solved by forming the portion formed by the step as an inclined surface 35, or by filling the space formed by the step. Each exemplary embodiment described below will be used to describe its specific method.

[0055] Figures 8A to 8C The frame structure of a vehicle according to a first exemplary embodiment of the present invention is shown.

[0056] This exemplary embodiment describes a door frame 30 applied to a door assembly 1, such as a vehicle frame.

[0057] In the vehicle's frame structure (which includes a first member 31 formed of a metal sheet and a second member 33 formed of a metal sheet thinner than the metal sheet of the first member 31 and welded to the first member 31), the inclined surface 35 is formed by welding the first member 31 and the second member 33 and then molding the first member 31 and the second member 33 to form an inclined surface 35 at the junction of the first member 31 and the second member 33.

[0058] Here, since the thickness of the first member 31 is greater than the thickness of the second member 33, the door frame 30 will be described by designating the fan-shaped reinforcing frame 31 as the first member 31 and the roof frame 33 as the second member 33. The first member 31 may be a fan-shaped reinforcing frame 31 or a B-pillar frame 32 with a relatively large thickness, and the second member 33 may be the roof frame 33 of the door assembly or an inner belt track 34, and is applied at the joint between the first member and the second member 33.

[0059] The fan-shaped reinforcing frame 31 and the roof frame 33 are located in the mold (D) so that their upper surfaces have the same height (see Figure 8A Since the sector-shaped reinforcing frame 31 is thicker than the roof frame 33, the bottom surface of the sector-shaped reinforcing frame 31 is positioned lower than the bottom surface of the roof frame 33.

[0060] Then, the parts of the fan-shaped reinforcing frame 31 that come into contact with the roof frame 33 are welded together. The fan-shaped reinforcing frame 31 and the roof frame 33 are welded using the above-described weld bar (TWB) method. Alternatively, the fan-shaped reinforcing frame 31 and the roof frame 33 are joined together by TWB laser welding using a laser as an energy source.

[0061] The fan-shaped reinforcing frame 31 and the roof frame 33 are integrally formed by welding (see...). Figure 8B Then, its components are arranged in the mold (D), and the upper surface of the fan-shaped reinforcing frame 31 is molded to be higher than the upper surface of the roof frame 33 (see...). Figure 8C The bottom surface of the fan-shaped reinforcing frame 31 and the roof frame 33 is molded using a press, so that the upper surface of the fan-shaped reinforcing frame 31 is higher than the upper surface of the roof frame 33.

[0062] As described above, when the upper surface of the fan-shaped reinforcing frame 31 is molded to be higher than the upper surface of the roof frame 33 using a press, the end of the fan-shaped reinforcing frame 31 and the portion adjacent to it are molded to be the inclined surface 35 on the roof frame 33, which has a relatively small thickness.

[0063] According to this exemplary embodiment, the height of the inclined surface 35 can be the difference between the thickness of the fan-shaped reinforcing frame 31 and the thickness of the roof frame 33.

[0064] Furthermore, the bottom surfaces of the fan-shaped reinforcing frame 31 and the roof frame 33 have the same height, and panel components (such as the inner panel 20 of the door assembly 1) can be attached to the bottom surfaces of the fan-shaped reinforcing frame 31 and the roof frame 33.

[0065] At this point, a space (S) is formed, surrounded by a fan-shaped reinforcing frame 31, a roof frame 33, and an inner panel 20. This space (S) can be filled with paint using a painting process. By filling the space with paint, it is possible to prevent the generation of wind noise or road noise caused by the space and to improve water tightness.

[0066] As described above, when the fan-shaped reinforcing frame 31 and the roof frame 33 are joined by TWB laser welding, the inclined surface 35 is formed by pressure forming to prevent the formation of a step between the fan-shaped reinforcing frame 31 and the roof frame 33, thus solving the problems caused by the step (wind noise, road noise and reduced water tightness).

[0067] Figure 8D This is a cross-sectional view of the state in which the glass guide channel 50 is applied to the frame structure of a vehicle according to a first exemplary embodiment of the present invention.

[0068] Figures 9A to 9C The frame structure of a vehicle according to a second exemplary embodiment of the present invention is shown.

[0069] According to this exemplary embodiment, in the vehicle frame structure (which includes a first member 31 formed of a metal plate and a second member 33 formed of a metal plate thinner than the metal plate of the first member 31 and welded to the first member 31), an inclined surface 35 is formed at the portion where the first member 31 and the second member 33 are joined.

[0070] According to this exemplary embodiment, the door frame 30 serves as the frame of the vehicle and will be described by designating a fan-shaped reinforcing frame 31 as the first member 31 and a roof frame 33 as the second member 33. Similarly, the first member 31 may be a fan-shaped reinforcing frame 31 or a B-pillar frame 32 with a relatively large thickness, and the second member 33 may be a roof frame 33 or an inner belt track 34.

[0071] However, according to this exemplary embodiment, the inclined surface 35 is formed by obliquely removing a portion of the fan-shaped reinforcing frame 31.

[0072] First, such as Figure 9A As shown, the fan-shaped reinforcing frame 31 and the roof frame 33 are arranged in the mold (D).

[0073] Furthermore, the fan-shaped reinforcing frame 31 is joined to the roof frame 33 using TWB laser welding. Since the fan-shaped reinforcing frame 31 is thicker than the roof frame 33, a step is formed between the fan-shaped reinforcing frame 31 and the roof frame 33 (see [link]). Figure 9B ).

[0074] To remove the step and connect the fan-shaped reinforcing frame 31 to the roof frame 33 via the inclined surface 35, a portion of the fan-shaped reinforcing frame 31 is removed by grinding the area where it contacts the roof frame 33. For example, when a portion of the fan-shaped reinforcing frame 31 passes through... Figure 9C When the “R1” in the process is being ground, the fan-shaped reinforcing frame 31 is connected to the roof frame 33 via the inclined surface 35.

[0075] Figure 9D This is a cross-sectional view of the state in which the glass guide groove 50 is applied to the frame structure of a vehicle according to a second exemplary embodiment of the present invention.

[0076] As described above, when the fan-shaped reinforcing frame 31 and the roof frame 33 are welded using TWB laser welding, a portion of the fan-shaped reinforcing frame 31 is ground to form an inclined surface 35 to prevent the formation of a step between the fan-shaped reinforcing frame 31 and the roof frame 33. This can prevent wind noise or road noise caused by the step and improve water tightness.

[0077] Figures 10A to 10C The frame structure of a vehicle according to a third exemplary embodiment of the present invention is shown.

[0078] According to this exemplary embodiment, as in the foregoing exemplary embodiment, the door frame 30 is used as, for example, the frame of a vehicle, and is described by designating a fan-shaped reinforcing frame 31 as the first component 31 and a roof frame 33 as the second component 33. Furthermore, the first component 31 may be a fan-shaped reinforcing frame 31 with a relatively large thickness or a B-pillar frame 32, and the second component 33 may also be a roof frame 33 or an inner belt track 34.

[0079] According to the present invention, a weld (B) may be formed between the first member 31 and the second member 33, and a portion of the weld (B) may be removed to form an inclined surface 35.

[0080] As in the third exemplary embodiment, the fan-shaped reinforcing frame 31 and the roof frame 33 are arranged in the mold (D) (see...). Figure 10A Furthermore, the fan-shaped reinforcing frame 31 and the roof frame 33 are joined using TWB laser welding. Since the fan-shaped reinforcing frame 31 is thicker than the roof frame 33, a step is formed between the fan-shaped reinforcing frame 31 and the roof frame 33.

[0081] The step between the fan-shaped reinforcing frame 31 and the roof frame 33 is formed by a weld (B) (see) Figure 10B The portion where the roof frame 33 contacts the fan-shaped reinforcing frame 31 is soft-welded using a flexible material to form a weld (B). Since the weld (B) is formed by soft welding, an inclined surface can be easily formed.

[0082] Subsequently, as Figure 10C As shown, when the grinding process is performed by... Figure 10C When the weld (B) is removed as shown in “R2”, an inclined surface is formed between the fan-shaped reinforcing frame 31 and the roof frame 33.

[0083] As described above, when a weld (B) is formed between the fan-shaped reinforcing frame 31 and the roof frame 33, the problem caused by the step (wind noise, road noise and reduced water tightness) can be solved by grinding a portion of the weld (B) to form an inclined surface 35.

[0084] Figure 10D This is a cross-sectional view showing the state in which the glass guide channel 50 is applied to the frame structure of a vehicle according to a third exemplary embodiment of the present invention.

[0085] Figures 11A to 11C The frame structure of a vehicle according to a fourth exemplary embodiment of the present invention is shown.

[0086] According to this exemplary embodiment, the door frame 30 serves as, for example, the frame of a vehicle. Furthermore, the door frame 30 is described by designating a fan-shaped reinforcing frame 31 as the first member 31 and a roof frame 33 as the second member 33. Similarly, the first member 31 may be a fan-shaped reinforcing frame 31 or a B-pillar frame 32 with a relatively large thickness, and the second member 33 may be a roof frame 33 or an inner belt track 34.

[0087] However, this exemplary embodiment fills the step formed between the first member 31 and the second member 33, thereby solving the problem caused by the step.

[0088] First, as in the second or third exemplary embodiment, TWB laser welding is used to weld the sector reinforcement frame 31 and the roof frame 33. A step caused by the difference between the thickness of the sector reinforcement frame 31 and the thickness of the roof frame 33 exists between the sector reinforcement frame 31 and the roof frame 33.

[0089] This invention solves the problems caused by steps (introduction of wind and road noise, reduced watertightness, etc.) by filling in the steps instead of removing them.

[0090] That is, by means of Figure 11B shown Figure 11A The glass guide groove 50 is filled in the step between the fan-shaped reinforcing frame 31 and the roof frame 33 on the cross section represented by line Ⅲ-Ⅲ, which solves the problem caused by the step.

[0091] Let's review the glass guide channel 50 that solves this problem, such as... Figure 11C As shown, a protrusion 51 is formed on the surface of the glass guide channel 50. Since the glass guide channel 50 is made of rubber and the protrusion 51 is formed on the surface of the glass guide channel 50, the space formed by the step between the fan-shaped reinforcing frame 31 and the roof frame 33 is filled by the deformation of the protrusion 51.

[0092] Specifically, a hollow cavity 52 is formed inside the portion of the glass guide channel 50 where the protrusion 51 is formed. Since the glass guide channel 50 itself is easily deformable due to the hollow cavity 52, this is advantageous for filling the space formed by the steps.

[0093] As described above, the exemplary embodiments have described a configuration for solving the problem caused by the step formed between the fan-shaped reinforcing frame 31 and the roof frame 33, but can also be applied to the step formed between the roof frame 33 and the B-pillar frame 32, the step formed between the fan-shaped reinforcing frame 31 and the inner belt track 34, and the step formed between the inner belt track 34 and the B-pillar frame 32.

[0094] Furthermore, exemplary embodiments can be applied to each frame constituting the vehicle and the vehicle door frame 30.

Claims

1. A frame structure for a vehicle, comprising: The first component is composed of metal plates; as well as The second component is composed of a metal plate that is thinner than the metal plate of the first component, and the second component is integrally connected to the first component by welding. The connection between the first component and the second component has an inclined surface, which is configured to inclinedly connect the upper surface of the first component and the upper surface of the second component, such that the upper surface of the second component is positioned lower than the upper surface of the first component in a gradually decreasing manner. The first component and the second component each have a bottom surface that is at the same horizontal position as each other. The frame structure further includes a panel member configured to be attached to the bottom surface of the first member and the bottom surface of the second member. The panel component and the connecting portion are spaced apart from each other, and the first component and the second component are spaced apart from each other, such that the coating is disposed in the space between the first component, the second component and the panel component.

2. The frame structure of a vehicle according to claim 1, wherein The inclined surface is configured to be integrally connected to the upper surfaces of the first component and the second component in such a way that the upper surface of the first component is higher than the upper surface of the second component.

3. The frame structure of the vehicle according to claim 2, wherein The upper surface of the first component is arranged to be higher than the upper surface of the second component through pressure processing.

4. The frame structure of a vehicle according to claim 1, wherein The connecting portion is configured to connect the end of the first component and the portion of the second component.

5. The frame structure of a vehicle according to claim 1, wherein The height of the inclined surface varies between the height of the first component and the height of the second component.

6. The frame structure of a vehicle according to claim 1, wherein The first component is one of the fan-shaped reinforcing frame and the B-pillar frame that constitute the door assembly. The second component is one of the roof frame or inner belt track that is attached to the fan-shaped reinforcing frame or the B-pillar frame.

7. The frame structure of a vehicle according to claim 1, wherein The first component and the second component are integrally connected to each other by welding with a welding plate.

8. A vehicle frame structure, comprising: The first component is composed of metal plates; as well as The second component is composed of a metal plate that is thinner than the metal plate of the first component, and the second component is integrally connected to the first component by welding. The connection between the first component and the second component has an inclined surface, which is configured to inclinedly connect the upper surface of the first component and the upper surface of the second component, such that the upper surface of the second component is positioned lower than the upper surface of the first component in a gradually decreasing manner. The connecting portion has an inclined surface, which is formed by arranging and welding the bottom surfaces of a first component and a second component at the same horizontal position, and then removing the end portion of the first component at an inclined angle.

9. The frame structure of a vehicle according to claim 8, wherein The portion of the first component that contacts the second component includes an inclined surface formed by grinding.

10. The vehicle frame structure according to claim 8, wherein, The inclined surface is configured to connect the upper surface of the first component and the upper surface of the second component.

11. A frame structure for a vehicle, comprising: The first component is composed of metal plates; as well as The second component is composed of a metal plate that is thinner than the metal plate of the first component, and the second component is integrally connected to the first component by welding. The connection between the first component and the second component has an inclined surface, which is configured to inclinedly connect the upper surface of the first component and the upper surface of the second component, such that the upper surface of the second component is positioned lower than the upper surface of the first component in a gradually decreasing manner. The connecting portion has an inclined surface, which is formed by arranging and welding the bottom surfaces of the first component and the second component at the same horizontal position, forming a weld at the joint between the first component and the second component, and then removing a portion of the weld at an incline.

12. The vehicle frame structure according to claim 11, wherein, The connecting portion is integrally attached to the upper surface of the second component and has an inclined surface by grinding the weld.

13. The vehicle frame structure according to claim 11, wherein, The connecting portion is integrally attached to the end of the first component that contacts the end of the second component.

14. The vehicle frame structure according to claim 11, wherein, The connecting portion is integrally attached to the first and second components via a soft solder weld.

15. A frame structure for a vehicle, comprising: The first component is composed of metal plates; The second component is composed of a metal plate that is thinner than the metal plate of the first component, and the second component is integrally connected to the first component by welding. A glass guide channel is arranged in the portion in which the first and second components are connected in a stepped manner; as well as A protrusion that extends from the outer surface of the glass guide groove toward the step between the first and second components. The first component and the second component each have a bottom surface that is at the same horizontal position as each other. The frame structure further includes a panel member configured to be attached to the bottom surface of the first member and the bottom surface of the second member.

16. The vehicle frame structure according to claim 15, wherein, The glass guide groove has holes.

17. The vehicle frame structure according to claim 15, wherein, The first component is one of the fan-shaped reinforcing frame that makes up the vehicle's door frame and the B-pillar frame. The second component is one of the roof frame or inner belt track that is attached to the fan-shaped reinforcing frame or the B-pillar frame.

18. The vehicle frame structure according to claim 15, wherein, The first component and the second component are configured to be integrally connected to each other by welding with a weld plate.

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