Aluminum alloy profile car door framework and machining method thereof

Abstract

The invention relates to an aluminum alloy profile car door framework and a machining method thereof. The vehicle door framework comprises a door frame camber beam which is formed by bending an aluminum alloy profile and is of a closed structure, the profile is provided with an inner beam plate, an outer beam plate, a first connecting beam plate and a second connecting beam plate, the inner beam plate and the outer beam plate are oppositely arranged, and the first connecting beam plate and the second connecting beam plate are connected with the inner beam plate and the outer beam plate to enable the profile to be of the closed structure. A first connecting beam plate connecting the first end of the inner beam plate and the first end of the outer beam plate is provided with a mud groove used for limiting window glass, and the end, close to the outer beam plate, of the second connecting beam plate is provided with a limiting protrusion. The inner windowsill beam and the car door outer cross beam are transversely and fixedly mounted between the two side beams of the door frame camber beam, and a car door inner water cut is mounted on the inner windowsill beam; the car door outer cross beam is connected with the car door outer plate, a car door outer water cutting part is installed on the car door outer cross beam, and the car door outer water cutting part and the car door inner water cutting part are matched to limit car window glass. Therefore, the problems that the input cost of a vehicle door development mold is too high and the vehicle door is heavy are solved.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle body structure design, and in particular to an aluminum alloy profile vehicle door frame and a processing method thereof. Background Art

[0002] With the development of the automobile and logistics industries, the competition in the commercial vehicle market is becoming increasingly fierce. However, the doors of existing commercial vehicles are generally made of stamped sheet metal, and during the processing, this production process also has problems such as high mold investment costs in the early stage of processing, long development cycle, and heavy weight of the door itself, which results in excessively high door costs, and thus higher maintenance costs in the later stage.

[0003] Therefore, reducing mold investment in door development and achieving lightweight design are technical issues that commercial vehicles currently need to solve. Summary of the invention

[0004] In order to solve the problem of high investment cost of door development mold and heavy door weight, the present invention provides an aluminum alloy profile door frame and a processing method thereof, wherein the aluminum alloy profile door frame comprises:

[0005] A door frame curved beam of a closed structure formed by bending an aluminum alloy profile, the profile having an inner beam plate and an outer beam plate arranged opposite to each other, and a first connecting beam plate and a second connecting beam plate connecting the inner beam plate and the outer beam plate so that the profile has a closed structure;

[0006] The inner beam plate cooperates with the door opening sealing strip for sealing, the outer beam plate overlaps with the vehicle door outer plate, the first connecting beam plate connecting the first end of the inner beam plate and the first end of the outer beam plate is provided with a mud groove for limiting the vehicle window glass, and the second connecting beam plate is provided with a limiting protrusion at one end close to the outer beam plate;

[0007] An inner window sill beam and a door outer cross beam are transversely fixedly installed between two side beams of the door frame curved beam, and the inner window sill beam is connected to a door interior trim panel, and a door inner water cutout is installed on the door interior trim panel;

[0008] The vehicle door outer cross beam is connected to the vehicle door outer panel, and a vehicle door outer water cut is installed on the vehicle door outer cross beam, and the vehicle door outer water cut and the vehicle door inner water cut cooperate to limit the vehicle window glass.

[0009] In some embodiments, one end of the second connecting beam plate is connected to the inner beam plate, and the other end is connected between the first end and the second end of the outer beam plate, and the second end of the outer beam plate is bent toward the door outer panel.

[0010] In some embodiments, the limiting protrusion includes two protrusions protruding from the second connecting beam plate, the outer sealing strip of the vehicle door is fixedly installed on the limiting protrusion, and a sealing member is installed at the second end of the outer beam plate to ensure the sealing of the vehicle door.

[0011] In some embodiments, the inner window sill beam has a long plate and a short plate that are relatively arranged, the long plate is arranged at the upper end close to the inner water cut of the vehicle door, and the short plate is arranged at the lower end away from the inner water cut of the vehicle door; and a connecting plate and a step plate that are relatively arranged to connect the long plate and the short plate.

[0012] In some embodiments, the cross-section of the outer door beam is a trapezoidal structure, and the upper base of the trapezoidal structure is connected to the outer door panel, and the lower base of the trapezoidal structure has an extension protruding from the trapezoidal structure at one end close to the outer door water cut for installing the outer door water cut.

[0013] In some embodiments, the door frame curved beam further comprises a hinge reinforcement plate fixedly mounted on the second connecting beam plate, and the installation height of the hinge reinforcement plate on the door frame curved beam starts from the upper hinge of the vehicle door and ends at the lower hinge.

[0014] In some embodiments, the thickness of the first connecting beam plate is smaller than the thickness of the inner beam plate and / or the outer beam plate.

[0015] In some embodiments, the thickness of the inner beam plate and / or the outer beam plate is smaller than the thickness of the second connecting beam plate.

[0016] In some embodiments, the door frame curved beam is provided with an installation hole for installing the door lock at the door lock, and corresponding positions of the first connecting beam plate and the second connecting beam plate are provided with openings.

[0017] The vehicle door frame of the present invention mainly includes a door frame curved beam, an inner window sill beam and a vehicle door outer cross beam, and all three are made of aluminum alloy profiles. Among them, the door frame curved beam needs to bend the aluminum alloy profile into a closed frame structure. The profile for processing the door frame curved beam is composed of an inner beam plate, an outer beam plate, a first connecting beam plate and a second connecting beam plate. The first connecting beam plate is located at the inner circle of the door frame curved beam, and the mud groove thereon can limit the vehicle window glass; the second connecting beam plate is located at the outer circle of the door frame curved beam, and the limiting protrusion thereon cooperates with the outer sealing strip of the vehicle door to seal.

[0018] Since the above-mentioned door frame is made of aluminum alloy profiles, it greatly reduces the weight of the door and realizes the lightweight of the door. Furthermore, the processing of aluminum alloy profiles is also simpler and more efficient, and the mold investment cost is basically controlled at about 200,000 yuan by using aluminum alloy extrusion profiles for processing, which greatly saves the cost of door production molds compared to the 3 million yuan cost required for traditional stamping sheet metal molds. In addition, in terms of efficiency, the development cycle of aluminum alloy extrusion profile molds is basically about 25 days, while the development cycle of traditional stamping sheet metal molds is about 90 days. Therefore, the technical solution of the present invention can also greatly shorten the production cycle.

[0019] The present invention also provides a method for processing an aluminum alloy profile door frame, which is used to process the aluminum alloy profile door frame described in any one of the above items, comprising:

[0020] S100: heating the aluminum alloy blank and extruding it through different dies to obtain aluminum alloy profiles required for preparing a door frame curved beam, an inner window sill beam, and an outer door cross beam, which are profile a, profile b, and profile c respectively;

[0021] S200: bending the profile a so that the profile a is bent toward the first connecting beam plate, and bending the profile a to a closed structure to obtain a door frame bent beam having a door outer frame structure;

[0022] S300: Cutting the profile b and the profile c to a preset size to obtain an inner window sill beam and an outer door beam;

[0023] S400: The inner window sill beam and the outer door cross beam are fixedly installed between two side beams of the door frame curved beam to obtain a door frame.

[0024] Based on this processing method, the above-mentioned aluminum alloy profile door frame can be manufactured, and the manufactured door frame also has the characteristics of light weight, low cost and short construction period. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 A schematic cross-sectional view of a door frame curved beam of a vehicle door frame according to an embodiment is shown;

[0026] Figure 2 A schematic cross-sectional view of another position of a door frame curved beam of a vehicle door frame according to an embodiment is shown;

[0027] Figure 3 A schematic structural diagram of a door body and a part of a vehicle body according to an embodiment is shown;

[0028] Figure 4 Shows Figure 3 Sectional view at A in the middle;

[0029] Figure 5 Shows Figure 3 Sectional view at B in the middle;

[0030] Figure 6 Shows Figure 3 Sectional view at C in the middle;

[0031] Figure 7 Shows Figure 3 Sectional view at D in the middle;

[0032] Figure 8 Shows Figure 3 Sectional view at point E;

[0033] Fig. 9 Shows Figure 3 Sectional view at F in the middle;

[0034] Fig.10 A schematic structural diagram of a vehicle door body in an embodiment is shown.

[0035] Reference numerals:

[0036] 01 is the door body, 11 is the door frame curved beam, 111 is the inner beam plate, 112 is the outer beam plate, 113 is the mud groove, 114 is the limiting protrusion, 115 is the hinge reinforcement plate, 12 is the inner window sill beam, 13 is the outer cross beam of the door, 14 is the outer door panel, 141 is the outer door sealing strip, 142 is the outer door water cut, 15 is the door interior panel, 151 is the inner door water cut, 16 is the window glass, and 17 is the door lock; 02 is the vehicle body, 21 is the door opening sealing strip, 22 is the upper hinge, 23 is the lower hinge, 24 is the angle plate, 241 is the angle plate sealing strip, and 25 is the ceiling interior panel. DETAILED DESCRIPTION

[0037] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and thus implement the present disclosure, rather than implying any limitation on the scope of the present disclosure.

[0038] As used herein, the term "including" and its variants are to be interpreted as open-ended terms meaning "including but not limited to". The term "based on" is to be interpreted as "based at least in part on". The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment". The term "another embodiment" is to be interpreted as "at least one other embodiment". The orientation or position relationship indicated by the terms "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inner", "outer", "vertical", "horizontal", "lateral", "longitudinal" and the like is based on the orientation or position relationship shown in the accompanying drawings. These terms are mainly for better describing the present application and its embodiments, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation. In addition, in addition to being used to indicate an orientation or position relationship, some of the above terms may also be used to indicate other meanings, such as the term "upper" may also be used to indicate a certain dependency or connection relationship in some cases. For those of ordinary skill in the art, the specific meanings of these terms in this application can be understood according to the specific circumstances. In addition, the terms "install", "set", "provided with", "connected" and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0039] See also Figures 1 to 10 As shown, an aluminum alloy profile door frame provided by an embodiment of the present invention includes a door frame curved beam 11, an inner window sill beam 12 and an outer door cross beam 13.

[0040] Specifically, the door frame curved beam 11 is bent into a closed structure by an aluminum alloy profile, and the profile has an inner beam plate 111 and an outer beam plate 112 arranged opposite to each other, and a first connecting beam plate and a second connecting beam plate connecting the inner beam plate 111 and the outer beam plate 112 so that the profile has a closed structure. Figure 1 and Fig.10 As shown, and through Figures 3 to 9 , the structure of the door frame curved beam 11 is specifically described in combination with the cross-sectional views at different positions of the vehicle door frame.

[0041] The inner beam plate 111 cooperates with the door opening sealing strip 21 on the vehicle body 02 for sealing, the outer beam plate 112 overlaps the door outer panel 14, the first connecting beam plate connects the first end of the inner beam plate 111 and the first end of the outer beam plate 112, and is provided with a mud groove 113 for limiting the window glass 16. When the window glass 16 is raised or lowered, it is limited by the mud groove 113, so that it can be raised or lowered stably and safely.

[0042] In this embodiment, a door opening sealing strip 21 is installed at the stop of the vehicle body 02, and the door opening sealing strip 21 and the stop of the vehicle body 02 have an interference amount of 1.8mm-3mm, and the interference amount is preferably 2.2mm, to ensure that the door opening sealing strip 21 is clamped at the stop of the vehicle body 02. The door opening sealing strip 21 and the inner beam plate 111 of the door frame curved beam 11 have an interference of 4mm-6mm to ensure the sealing of the vehicle door, and the interference amount is preferably 5mm.

[0043] A limiting protrusion 114 is provided at one end of the second connecting beam plate close to the outer beam plate 112. Figure 1 to Figure 2 As shown, a door outer sealing strip 141 is installed in the limiting protrusion 114 to achieve sealing between the door body 01 and the vehicle body 02 when the door is closed.

[0044] like Fig. 9 ( Figure 3 Sectional view at F in the middle) to Fig.10 As shown, the inner window sill beam 12 and the door outer cross beam 13 are transversely fixedly installed between the two side beams of the door frame curved beam 11, and the inner window sill beam 12 is connected to the door interior trim panel 15, and the door inner water cut 151 is installed on the door interior trim panel 15.

[0045] The vehicle door outer cross beam 13 is connected to the vehicle door outer panel 14 , and a vehicle door outer water cut 142 is installed on the vehicle door outer cross beam 13 . The vehicle door outer water cut 142 and the vehicle door inner water cut 151 cooperate to limit the vehicle window glass 16 .

[0046] In this embodiment, if Figure 1 to Figure 2 As shown, one end of the second connecting beam plate is connected to the inner beam plate 111, and the other end is connected between the first end and the second end of the outer beam plate 112, and the second end of the outer beam plate 112 is bent toward the door outer panel 14. The second end of the outer beam plate 112 is exposed outside the closed structure of the door frame curved beam 11, and a sealing member is provided on the bent second end thereof to further ensure the sealing between the door body 01 and the vehicle body 02 when the door is closed, as shown in FIG. Figure 5 to Figure 6 As shown, they are respectively expressed as Figure 3 Cross-sectional views at points B and C.

[0047] As a preferred embodiment of the present application, the limiting protrusion 114 includes two protrusions protruding from the second connecting beam plate, see Figure 1 , Figure 2 and Figure 4 ( Figure 3 The outer door sealing strip 141 is fixedly mounted on the limiting protrusion 114, and the outer door sealing strip 141 is fixed by two protrusions to ensure the stability of the outer door sealing strip 141 when the door is opened and closed. In one embodiment of the present application, one of the protrusions is located on the second connecting beam plate, and the other is located on the second end of the outer beam plate 112, such as Figure 1 to Figure 2 As shown, the top of the protrusion located on the second connecting beam plate is bent toward the protrusion on the outer beam plate 112 to clamp and fix the door outer sealing strip 141. Of course, the structure and position setting of the limiting protrusion 114, under the premise of being able to achieve the fixed installation of the door outer sealing strip 141 and ensuring the sealing between the door outer sealing strip 141 and the vehicle body 02, other feasible structures are not limited.

[0048] Specifically, the outer door sealing strip 141 is clamped in the limiting protrusion 114 to play a role in sealing and aesthetics. There is an interference of 2mm-4mm between the outer door sealing strip 141 and the vehicle body 02. Preferably, the interference is 3mm to ensure sealing.

[0049] See also Fig. 9 The inner window sill beam 12 has a long plate and a short plate arranged opposite to each other, and a connecting plate and a step plate arranged opposite to each other to connect the long plate and the short plate. The long plate is arranged at the upper end close to the inner water cut 151 of the vehicle door, and the short plate is arranged at the lower end away from the inner water cut 151 of the vehicle door. A glass lifter for controlling the lifting of the vehicle window glass 16 is arranged at the groove formed by the step plate. The inner window sill beam 12 is also made of aluminum alloy profiles, which has low processing cost and short cycle. The inner window sill beam 12 after forming has lighter weight, and is an important component of the lightweight design of the vehicle door frame.

[0050] See also Fig. 9 The cross section of the door outer cross beam 13 is a trapezoidal structure, and the upper base of the trapezoidal structure is connected to the door outer panel 14, and the lower base of the trapezoidal structure has an extension protruding from the trapezoidal structure at one end close to the door outer water cut 142 for installing the door outer water cut 142.

[0051] In actual production, the above-mentioned outer water cut 142 of the door is clamped on the outer cross beam 13 of the door, and the inner water cut 151 of the door and the outer water cut 142 of the door press the window glass 16 tightly, and maintain an interference amount of 2mm-4mm with the window glass 16 to ensure that the glass will not shake when moving up and down. Preferably, an interference amount of 3mm is maintained, that is, the outer water cut 142 of the door and the inner water cut 151 of the door interfere with the window glass 16 by 3mm respectively.

[0052] In a preferred embodiment, Figure 2 , Figure 5 to Figure 6As shown, the door frame curved beam 11 also includes a hinge reinforcement plate 115 fixedly mounted on the second connecting beam plate, and the installation height of the hinge reinforcement plate 115 on the door frame curved beam 11 starts from the upper hinge 22 of the vehicle door and ends at the lower hinge 23, that is, the upper and lower ends of the hinge reinforcement plate 115 are respectively located at the positions corresponding to the upper hinge 22 and the lower hinge 23 of the door frame curved beam 11, so as to fix the upper hinge 22 and the lower hinge 23 on the hinge reinforcement plate 115. Specifically, the hinge reinforcement plate 115 is fixed to the second connecting beam plate by rivets, and the upper hinge 22 and the lower hinge 23 are preferably installed on the door frame curved beam 11 by bolts, and the nuts are welded to the hinge reinforcement plate 115 on the back side by projection welding.

[0053] like Figure 1 to Figure 2 As shown, the width of the open end of the mud groove 113 is smaller than the width of the bottom open end of the mud groove 113 , so as to limit the vehicle window glass 16 and prevent it from shaking.

[0054] The mud groove sealing strip is clamped in the mud groove 113 on the door frame curved beam 11, and plays the role of positioning the vehicle window glass 16. After installation, an interference amount of 2mm-4mm is set between the mud groove sealing strip and the vehicle window glass 16 to ensure the stability of the vehicle window glass 16 during vehicle driving and lifting. Preferably, the interference amount is set to 3mm.

[0055] In one embodiment of the present application, the thickness of the first connecting beam plate is smaller than the thickness of the inner beam plate 111 and / or the outer beam plate 112 .

[0056] Since the first connecting beam plate is located on the inner side of the door frame curved beam 11, during the bending process of the profile, the first connecting beam plate is subjected to compression force, and its thickness will increase to a certain extent, while the inner beam plate 111 and the outer beam plate 112 are located on both sides of the door frame curved beam 11, that is, the inner and outer sides of the car door, and their thickness deformation during the bending process is small. Therefore, in the preferred solution of this embodiment, the thickness of the inner beam plate 111 and the outer beam plate 112 are consistent, and the thickness of the first connecting beam plate is less than the thickness of the inner beam plate 111 and / or the outer beam plate 112, so as to avoid its thickening again due to compression during the bending process. As a result, the thickness of the door frame curved beam 11 finally formed by bending is basically uniform at the cross section, thereby avoiding the influence of uneven stress on the strength of the car door frame.

[0057] Preferably, the thickness of the inner beam plate 111 and / or the outer beam plate 112 is smaller than the thickness of the second connecting beam plate.

[0058] In this embodiment, since the second connecting beam plate is located outside the door frame curved beam 11, it is subjected to tensile force during the bending process of the profile, and its thickness will be reduced to a certain extent. Therefore, the thickness of the inner beam plate 111 and / or the outer beam plate 112 is set to be smaller than the thickness of the second connecting beam plate to avoid the second connecting beam plate being too thin due to stretching. As a result, the thickness of the door frame curved beam 11 formed by bending is basically uniform at the cross section, thereby avoiding the influence of uneven stress on the strength of the door frame.

[0059] The door frame curved beam 11 is provided with a placement hole for installing the door lock 17 at the door lock 17, and corresponding positions of the first connecting beam plate and the second connecting beam plate are both provided with openings.

[0060] In this embodiment, if Figure 8 As shown, it is a cross-sectional view of the door frame curved beam 11 at the door lock 17. It can be seen that openings of different sizes and structures are set at different positions of the door frame curved beam 11 to correspond to the structure of the door lock 17 and install and accommodate the door lock 17. It can be understood that the structure of the door frame curved beam 11 at the door lock 17 is affected by the structure of the door lock 17, and it is not limited to the structure shown in the figure. In the actual processing process, the processing at this location can be differentiated according to the actual needs of the door lock 17.

[0061] The door frame of the embodiment of the present invention mainly includes a door frame curved beam 11, an inner window sill beam 12 and an outer door cross beam 13, and all three are made of aluminum alloy profiles. Among them, the door frame curved beam 11 needs to bend the aluminum alloy profile into a closed frame structure. The profile for processing the door frame curved beam 11 is composed of an inner beam plate 111, an outer beam plate 112, a first connecting beam plate and a second connecting beam plate. The first connecting beam plate is located at the inner circle of the door frame curved beam 11, and the mud groove 113 thereon can limit the window glass 16; the second connecting beam plate is located at the outer circle of the door frame curved beam 11, and the limiting protrusion 114 thereon cooperates with the outer door sealing strip 141 for sealing.

[0062] Since the above-mentioned door frame is made of aluminum alloy profiles, it greatly reduces the weight of the door and realizes the lightweight of the door. Furthermore, the processing of aluminum alloy profiles is also simpler and more efficient, and the mold investment cost is basically controlled at about 200,000 yuan by using aluminum alloy extrusion profiles for processing, which greatly saves the cost of door production molds compared to the 3 million yuan cost required for traditional stamping sheet metal molds. In addition, in terms of efficiency, the development cycle of aluminum alloy extrusion profile molds is basically about 25 days, while the development cycle of traditional stamping sheet metal molds is about 90 days. Therefore, the technical solution of the present invention can also greatly shorten the production cycle.

[0063] The door frame is manufactured by bending and welding aluminum alloy profiles, and then assembled with some stamping parts to form a complete door structure.

[0064] The present invention guides the design of the door frame through 6 cross-sectional views, and the above scheme can be implemented through the following parameters during actual processing:

[0065] Depend on Figure 5 to Figure 6 It can be seen that the door interior panel 15 is installed on the door, and interferes with the door frame curved beam 11 by 0.3mm to ensure that the door interior panel 15 can be pressed tightly against the door. The door outer panel 14 is bonded to the door frame curved beam 11, and a 0.5mm gap is left between the door outer panel 14 and the door frame curved beam 11. The corner plate sealing strip 241 is fixed to the corner plate 24 by snaps, and a 6.2mm gap is left between the corner plate 24 and the door frame curved beam 11. The corner plate sealing strip 241 interferes with the door frame curved beam 11 by 5.6mm to ensure that the sealing strip is pressed tightly. Fig. 9 It can be seen that the door interior panel 15 is installed on the inner window sill beam 12, the door inner water cut 151 is installed on the door interior panel 15, and the door outer panel 14 is glued on the door outer cross beam 13, leaving a 0.5mm glue gap; the ceiling interior panel 25 is pressed on the inner side of the door opening sealing strip 21 to ensure the aesthetics of the door; Figure 8 It can be seen that the door lock 17 is installed on the door frame curved beam 11. Figure 8 The height of the door lock 17 can be determined by Figure 7 It can be seen that the threshold molding is pressed on the door opening sealing strip 21 to ensure the aesthetics of the interior of the car. The threshold molding is fixed by screws, and a groove is opened above the screws at the threshold molding to fix the plug cover to further ensure the aesthetics of the interior of the car and improve the sense of quality. The thickness of the door frame curved beam 11 is 2.5mm, the thickness of the door outer panel 14 is 1.5-2.5mm, preferably 2.5mm, the thickness of the hinge reinforcement plate 115 is 1.5-2mm, preferably 2mm, the thickness of the inner window sill beam 12 is 1-2mm, preferably 1mm, and the thickness of the door outer cross beam 13 is 1-2mm, preferably 1mm. The window glass 16 is made of laminated glass with a thickness of 6.76mm. The cross sections of other accessories and interior parts are processed according to actual processing requirements.

[0066] The above actual processing parameter implementation is only the preferred parameters in this embodiment. It is feasible to reasonably increase or decrease the above parameters in accordance with actual needs.

[0067] In addition, an embodiment of the present invention further provides a method for processing an aluminum alloy profile door frame, which is used to process the above-mentioned aluminum alloy profile door frame, and the processing steps include:

[0068] S100: Aluminum alloy blanks are heated and extruded through different dies to obtain aluminum alloy profiles required for preparing the door frame curved beam 11, the inner window sill beam 12 and the vehicle door outer cross beam 13, which are profile a, profile b and profile c respectively.

[0069] Due to different processing molds, profiles a, b and c have different cross-sectional structures. For details, see Figures 1 to 9 When the structure of profile a has sufficient strength, the door frame curved beam 11 formed by bending it also has a lighter weight. Similarly, the use of profile b and profile c also makes the weight of the fixing part of the window glass 16 lighter to a certain extent. Therefore, the processed door frame has the characteristics of being lightweight. On the other hand, since the mold cost of profile processing is lower and the production cycle is short, the production characteristics of low cost and high efficiency are also achieved.

[0070] S200: bending the profile a so that the profile a is bent toward the first connecting beam plate, and bending the profile a to a closed structure to obtain a door frame bent beam 11 having a door outer frame structure.

[0071] When the profile a is bent toward the first connecting beam, the mud groove 113 is located on the inner side of the door frame curved beam 11, so that the window glass 16 can be limited. Since the bending is performed toward the first connecting beam, it is preferred in this embodiment that the thickness of the inner beam 111 and the outer beam 112 in the profile a remain consistent, and the thickness of the first connecting beam is less than the thickness of the inner beam 111 and / or the outer beam 112, so as to avoid thickening again due to compression during the bending process. At the same time, the thickness of the inner beam 111 and / or the outer beam 112 is less than the thickness of the second connecting beam, so as to avoid the thickness of the second connecting beam being too small due to stretching. The above arrangement allows the thickness of the door frame curved beam 11 finally formed by bending to remain basically uniform at the cross section, so as to avoid uneven stress affecting the strength of the door frame.

[0072] S300: Cut the profile b and the profile c to a preset size to obtain an inner window sill beam 12 and an outer door cross beam 13 .

[0073] In the actual production process, the above steps S200 and S300 can be processed first, whether the door frame curved beam 11 or the inner window sill beam 12 and the outer door cross beam 13 are processed first, or they can be processed simultaneously, and the processing sequence is not limited.

[0074] S400: The inner window sill beam 12 and the vehicle door outer cross beam 13 are fixedly installed between two side beams of the door frame curved beam 11 to obtain a vehicle door frame.

[0075] The inner window sill beam 12 and the outer cross beam 13 of the vehicle door can be preferably fixedly installed on the door frame curved beam 11 by welding. Of course, in addition to welding, other methods such as bolt connection that can achieve good fixed connection are all desirable.

[0076] In this embodiment, step S200 further includes: during the bending process of the profile a, placing the hinge reinforcement plate 115 into the profile a and fixing it to the corresponding position of the second connecting beam plate of the profile a, so that after the bending is completed, the upper and lower ends are respectively located at the positions corresponding to the upper hinge 22 and the lower hinge 23 of the door frame curved beam 11, so that the upper hinge 22 and the lower hinge 23 are fixedly installed on the hinge reinforcement plate 115. Specifically, the hinge reinforcement plate 115 is fixed to the second connecting beam plate by rivets, and the upper hinge 22 and the lower hinge 23 are preferably installed on the door frame curved beam 11 by bolts, and the nuts are welded to the hinge reinforcement plate 115 on the back by projection welding. Preferably, the hinge reinforcement plate 115 is also processed by profiles.

[0077] In addition, after step S200 , the method further includes step S201 : performing hole drilling processing on the formed door frame curved beam 11 to reserve installation space for the door lock 17 and other components that need to be installed on the door frame curved beam 11 .

[0078] Those skilled in the art will appreciate that the above-mentioned embodiments are specific examples for implementing the present disclosure, and in actual applications, various changes may be made thereto in form and detail without departing from the scope of the present disclosure.

Claims

1. An aluminum alloy profile door frame, characterized in that: The door frame comprises: A door frame bent beam (11) of a closed structure formed by bending an aluminum alloy profile, the profile comprising an inner beam plate (111) and an outer beam plate (112) arranged opposite to each other, and a first connecting beam plate and a second connecting beam plate connecting the inner beam plate (111) and the outer beam plate (112) so that the profile presents a closed structure; The inner beam plate (111) cooperates with the door opening sealing strip (21) for sealing, the outer beam plate (112) overlaps the vehicle door outer panel (14), a mud groove (113) for limiting the vehicle window glass (16) is provided on the first connecting beam plate connecting the first end of the inner beam plate (111) and the first end of the outer beam plate (112), and a limiting protrusion (114) is provided on the end of the second connecting beam plate close to the outer beam plate (112); An inner window sill beam (12) and a door outer cross beam (13) are transversely fixedly mounted between two side beams of the door frame curved beam (11), and the inner window sill beam (12) is connected to a door interior trim panel (15), and a door inner water cut (151) is mounted on the door interior trim panel (15); The vehicle door outer cross beam (13) is connected to the vehicle door outer panel (14), and a vehicle door outer water cut (142) is installed on the vehicle door outer cross beam (13), and the vehicle door outer water cut (142) and the vehicle door inner water cut (151) cooperate to limit the vehicle window glass (16).

2. The aluminum alloy door frame according to claim 1, characterized in that: One end of the second connecting beam plate is connected to the inner beam plate (111), and the other end is connected between the first end and the second end of the outer beam plate (112), and the second end of the outer beam plate (112) is bent toward the door outer panel (14).

3. The aluminum alloy profile door frame according to claim 2, characterized in that: The limiting protrusion (114) comprises two protrusions protruding from the second connecting beam plate, the door outer sealing strip (141) is fixedly mounted on the limiting protrusion (114), and a sealing member is mounted on the second end of the outer beam plate (112) to ensure the sealing performance of the door.

4. The aluminum alloy profile door frame according to claim 1, characterized in that: The inner window sill beam (12) comprises a long plate and a short plate which are arranged opposite to each other, wherein the long plate is arranged at an upper end close to the inner water cut (151) of the vehicle door, and the short plate is arranged at a lower end away from the inner water cut (151) of the vehicle door; and a connecting plate and a step plate which are arranged opposite to each other and connect the long plate and the short plate.

5. The aluminum alloy profile door frame according to claim 1, characterized in that: The cross section of the vehicle door outer cross beam (13) is a trapezoidal structure, and the upper base of the trapezoidal structure is connected to the vehicle door outer panel (14), and the lower base of the trapezoidal structure has an end close to the vehicle door outer water cut (142) and has an extension portion protruding from the trapezoidal structure for installing the vehicle door outer water cut (142).

6. An aluminum alloy profile door frame according to any one of claims 1 to 5, characterized in that: The door frame curved beam (11) also includes a hinge reinforcement plate (115) fixedly mounted on the second connecting beam plate, and the installation height of the hinge reinforcement plate (115) on the door frame curved beam (11) starts from the upper hinge (22) of the vehicle door and ends at the lower hinge (23).

7. An aluminum alloy profile door frame according to any one of claims 1 to 5, characterized in that: The thickness of the first connecting beam plate is smaller than the thickness of the inner beam plate (111) and / or the outer beam plate (112).

8. The aluminum alloy profile door frame according to any one of claims 1 to 5, characterized in that: The thickness of the inner beam plate (111) and / or the outer beam plate (112) is smaller than the thickness of the second connecting beam plate.

9. An aluminum alloy profile door frame according to any one of claims 1 to 5, characterized in that: The door frame curved beam (11) is provided with a placement hole for installing the door lock (17) at the door lock (17), and corresponding positions of the first connecting beam plate and the second connecting beam plate are both provided with openings.

10. A method for processing an aluminum alloy profile door frame, characterized in that: For processing the aluminum alloy profile door frame according to any one of claims 1 to 9, the method comprises: S100: heating an aluminum alloy blank and extruding it through different dies to obtain aluminum alloy profiles required for preparing a door frame curved beam (11), an inner window sill beam (12) and an outer door cross beam (13), which are profile a, profile b and profile c respectively; S200: bending the profile a so that the profile a is bent toward the first connecting beam plate, and bending the profile a to a closed structure to obtain the door frame bent beam (11) having a door outer frame structure; S300: Cutting the profile b and the profile c to a preset size to obtain the inner window sill beam (12) and the outer door beam (13); S400: The inner window sill beam (12) and the vehicle door outer cross beam (13) are fixedly mounted between two side beams of the door frame curved beam (11) to obtain a vehicle door frame.

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