Vehicle body side wall framework structure and manufacturing method

Abstract

The invention relates to the technical field of vehicle body structures, in particular to a vehicle body side wall framework structure and a manufacturing method. The vehicle body side wall framework comprises a beam system structure and a joint structure for splicing and connecting the beam system structure; the beam system structure comprises a straight beam body; the connector structure comprises an A column lower connector, an A column upper connector, a B column upper connector, a B column lower connector, a C column upper connector and a rear wheel cover connector. The straight beam body comprises a column B, a column C, an upper edge beam and a lower edge beam; two ends of the first upper edge beam are respectively spliced with the A-column lower joint and the A-column upper joint, the A-column upper joint and the B-column upper joint, and the B-column upper joint and the C-column upper joint through a plurality of upper edge beams; the A column lower connector and the B column lower connector are connected through a lower edge beam, and the B column lower connector and the rear wheel cover connector are connected through a lower edge beam. The beam system structure is spliced with the joint structure, numerous parts are reduced, the beam system structure is of a straight structure, the length or height of a vehicle body can be adjusted by adjusting the length of the beam system structure, and the joint structure does not need to be adjusted.

Description

Technical Field

[0001] This invention relates to the field of vehicle body structure technology, specifically to a vehicle body side frame structure and its manufacturing method. Background Technology

[0002] Existing body-in-white structures typically employ sheet metal stamping, involving numerous sub-parts rigidly connected by 300-500 weld points. This complex welding process and fixed design make adjustments difficult. Different vehicle models have varying sizes and shapes, necessitating redesign. In van-type vehicles, the main differences lie in length and height, requiring a complete redesign of the body structure. This significantly extends the body-in-white development cycle and increases production costs.

[0003] Patent publication number "CN116985919A" discloses a structure for improving the rigidity of automobile body joints, comprising: an upper A-pillar joint, a middle A-pillar joint, a lower A-pillar joint, an upper B-pillar joint, a lower B-pillar joint, an upper C-pillar joint, a lower C-pillar joint, and a lower D-pillar joint; the lower A-pillar joint has a reinforcing structure; the upper A-pillar joint has a reinforcing structure; the upper C-pillar joint has a reinforcing structure; and the lower D-pillar joint has a reinforcing structure. This patented body structure is suitable for passenger cars. Adjusting the vehicle length or height requires changing the joint structure or the beam-column structure such as the A-pillar, necessitating the redesign of production molds. This makes adjusting the vehicle's length and height inconvenient. Therefore, a body structure that facilitates adjustment of vehicle length and height is needed. Summary of the Invention

[0004] The purpose of this invention is to overcome the shortcomings of the above-mentioned background technology and provide a vehicle body side frame structure and manufacturing method.

[0005] The technical solution adopted in this invention is: a vehicle body side frame structure, including a beam system structure and a joint structure for splicing and connecting the beam system structure; the beam system structure includes multiple straight beams; The connector structure includes a lower A-pillar connector, an upper A-pillar connector, an upper B-pillar connector, a lower B-pillar connector, an upper C-pillar connector, and a rear wheel arch connector. The straight beam includes a B-column, a C-column, an upper side beam, and a lower side beam; the top of the lower joint of the A-column is connected to the upper joint of the A-column, the upper joint of the B-column, and the upper joint of the C-column in sequence through multiple upper side beams; the bottom end of the first upper side beam is connected to the lower joint of the A-column, and the top end is inclined backward and connected to the upper joint of the A-column; the bottom of the lower joint of the A-column is connected to the lower joint of the B-column, and the lower joint of the B-column is connected to the rear wheel arch joint through lower side beams.

[0006] According to the present invention, a vehicle side frame structure is provided, wherein the two ends of the B-pillar are spliced ​​with the upper B-pillar connector and the lower B-pillar connector, and the two ends of the C-pillar are spliced ​​with the upper C-pillar connector and the rear wheel arch connector.

[0007] According to the present invention, a vehicle body side frame structure is provided, wherein the joint structure includes a die-cast part; the beam structure is extruded; the upper beam includes a second upper beam with both ends spliced ​​to the upper joint of the A-pillar and the upper joint of the B-pillar, and a third upper beam with both ends spliced ​​to the upper joint of the B-pillar and the upper joint of the C-pillar; the lower beam includes a first lower beam with both ends spliced ​​between the lower joint of the A-pillar and the lower joint of the B-pillar, and a second lower beam with both ends spliced ​​between the lower joint of the B-pillar and the rear wheel arch joint.

[0008] According to the present invention, a vehicle side frame structure is provided, wherein the beam structure is extruded; the A-pillar lower connector includes a vertical support part, a bottom connector part and a top connector part; the bottom end of the first upper beam is connected to the top connector part, and together with the A-pillar lower connector, forms the A-pillar support structure of the vehicle side frame.

[0009] According to the present invention, a vehicle body side frame structure includes a joint structure comprising die-cast parts; the A-pillar lower joint is formed by connecting a first joint body and a second joint body, both of which are die-cast parts, together to form a cavity beam-type structure; the first joint body includes a vertical support plate, a top joint side plate extending obliquely from the top of the vertical support plate toward the A-pillar upper joint, and a bottom joint side plate extending sequentially from the bottom of the vertical support plate; the first joint body has an inner groove extending from the top joint side plate through the vertical support plate to the bottom joint side plate; when the first joint body and the second joint body are connected together, they form a top joint portion and a bottom joint portion, both of which are cavity beam-type.

[0010] According to the present invention, the second joint body is also provided with a top joint side plate, a vertical support plate, a bottom joint side plate and an inner groove; the inner groove is provided with staggered reinforcing ribs.

[0011] According to a vehicle body side frame structure provided by the present invention, the A-pillar upper connector includes a first front connector portion facing the lower connector of the A-pillar and a first rear connector portion facing rearward, as well as a first inner connector portion located at the intersection of the first front connector portion and the first rear connector portion.

[0012] According to the present invention, a vehicle body side frame structure is provided, wherein the B-pillar joint includes a second front joint, a second lower joint, and a second rear joint; the connection between the second lower joint and the second front joint and the second rear joint is an arc-shaped transition connection; the second lower joint includes a U-shaped structure, and the two sides of the U-shaped arm of the second lower joint are connected to a first flap, and the first flap extends in an arc-shaped transition to connect to the corresponding second front joint or second rear joint.

[0013] According to the vehicle body side frame structure provided by the present invention, the B-pillar joint further includes a second inner joint located at the intersection of the second front joint, the second lower joint, and the second rear joint; the second front joint, the second rear joint, and the second lower joint form a T-shaped structure; the second front joint, the second rear joint, and the second inner joint form a T-shaped structure; the two sides of the second inner joint are respectively connected to the second front joint and the second rear joint in an arc transition.

[0014] According to the present invention, a vehicle body side frame structure includes a B-pillar joint comprising an upper panel, a grille body disposed on the lower side of the upper panel, and a U-shaped second lower joint portion disposed at the bottom end of the grille body. The U-shaped arm of the second lower joint portion extends forward and backward with arc-shaped segments, and the two arc-shaped segments are respectively connected to the lower plate of the front joint portion b and the lower plate of the second rear joint portion. The lower plate is connected to the grille body and is connected to the upper panel through a vertical plate. The grille body is connected to the arc-shaped segments on both sides. The U-shaped arm of the second lower joint portion is provided with a first flap. The second inner joint portion is connected to the grille body in a U-shaped structure, and the second flaps on both sides of its U-shaped arm are connected to the upper panel.

[0015] According to the present invention, a vehicle body side frame structure is provided, wherein the rear wheel cover joint includes a cover body and a wheel cover upper joint portion disposed on the cover body. The front end of the cover body is inclined forward and downward and connected to a wheel cover front joint portion. The wheel cover upper joint portion is provided with a reinforcing rib extending vertically on the surface of the cover body. The two ends of the second lower side beam are respectively connected to the rear end of the B-pillar lower joint and the wheel cover front joint.

[0016] According to the present invention, a vehicle body side frame structure is provided, wherein a crossbeam mounting plate is provided on the front end of the cover above the front joint of the wheel cover, and the crossbeam mounting plate is supported on the second lower side beam when the second lower side beam is connected to the front joint of the wheel cover; the crossbeam mounting plate is recessed to form a crossbeam mounting groove, and the inner end of the crossbeam mounting groove is open.

[0017] According to the present invention, a vehicle body side frame structure is provided, wherein a suspension mounting plate is provided on the side of the cover near the vehicle interior, and the front and rear sides of the suspension mounting plate are provided with diagonal bracing plates connected to the cover; the suspension mounting plate is provided with mounting holes for mounting the suspension structure; the two diagonal bracing plates are in the shape of an octagon or an inverted octagon.

[0018] According to a vehicle body side frame structure provided by the present invention, the rear wheel cover joint further includes a wheel cover rear joint portion disposed at the rear end of the cover body. The wheel cover rear joint portion includes a carrier plate connected to the cover body and a bracket connected to the carrier plate. The bracket is provided with a D-pillar mounting groove for mounting the D-pillar.

[0019] According to the present invention, a vehicle side frame structure is provided, wherein the joint structure further includes a D-pillar joint; the beam system structure further includes a fourth upper beam and a D-pillar, with the top and bottom ends of the D-pillar connected to the D-pillar joint and the rear end of the rear wheel arch joint, respectively; and the two ends of the fourth upper beam are connected to the upper C-pillar joint and the D-pillar joint, respectively.

[0020] According to the present invention, a side frame structure for a vehicle body includes a middle side beam, the two ends of which are connected to the C-pillar and D-pillar and are spaced below the fourth upper side beam; the middle side beam is fixed to the top of the rear wheel arch joint.

[0021] According to a vehicle body side frame structure provided by the present invention, the D-pillar joint includes a fourth front joint portion, a fourth lower joint portion, and a fourth inner joint portion.

[0022] In another aspect, the present invention provides a method for manufacturing a vehicle side frame structure, used to manufacture the vehicle side frame structure provided by the present invention, the method comprising, Multiple straight beams are extruded; the length of the multiple straight beams is set according to the vehicle length and height requirements. The die-cast parts form the upper B-pillar connector, lower B-pillar connector, upper C-pillar connector, rear wheel arch connector, and the first connector body and the second connector body; the first connector body and the second connector body are connected to form a cavity beam type lower A-pillar connector. Connect the upper and lower ends of the first upper beam to the upper and lower joints of the A-pillar, respectively. Connect the two ends of the B-pillar to the upper and lower joints of the B-pillar. Connect the two ends of the C-pillar to the upper joint of the C-pillar and the rear wheel arch joint. The upper joint of column A is connected to the upper joint of column B by the second upper beam, and the upper joint of column B is connected to the upper joint of column C by the third upper beam. Multiple lower beams connect the lower joints of the A-pillar and the B-pillar, and the lower joint of the B-pillar is connected to the front end of the rear wheel arch joint.

[0023] In another aspect, the present invention provides a method for manufacturing a long vehicle body side frame structure, the method comprising, Multiple straight beams are extruded; the length of the multiple straight beams is set according to the vehicle length and height requirements. The die-cast parts form the upper B-pillar connector, lower B-pillar connector, upper C-pillar connector, rear wheel arch connector, and the first connector body and the second connector body; the first connector body and the second connector body are connected to form a cavity beam type lower A-pillar connector. Connect the upper and lower ends of the first upper beam to the upper and lower joints of the A-pillar, respectively. Connect the two ends of the B-pillar to the upper and lower joints of the B-pillar. Connect the two ends of the C-pillar to the upper joint of the C-pillar and the rear wheel arch joint. The upper joint of column A is connected to the upper joint of column B by the second upper beam, and the upper joint of column B is connected to the upper joint of column C by the third upper beam. Multiple lower beams are used to connect the lower joint of the A-pillar to the lower joint of the B-pillar, and the lower joint of the B-pillar to the front end of the rear wheel arch joint. The upper C-pillar connector and the lower D-pillar connector are connected by the fourth upper beam, and the two ends of the lower D-pillar are respectively connected to the rear end of the lower D-pillar connector and the rear wheel arch connector. The straight beam also includes a middle side beam, which connects the two ends of the middle side beam to the C-column and D-column, and the middle part to the top of the rear wheel arch joint.

[0024] The beneficial effects of this invention include: 1. The body side frame is formed by splicing joints through a beam system structure, which reduces the number of parts and improves production efficiency. The first upper beam is spliced ​​to the lower A-pillar joint and the upper A-pillar joint at both ends. The upper A-pillar joint is connected to the upper B-pillar joint, and the upper B-pillar joint is connected to the upper C-pillar joint through the upper beams. The lower A-pillar joint is connected to the lower B-pillar joint, and the lower B-pillar joint is connected to the rear wheel arch joint through the lower beams to form the body side frame. The beam system structure is a straight beam body, which is suitable for box-type vehicles. The length or height of the body can be adjusted by adjusting the length of the beam system structure. There is no need to adjust the joint structure structure, which makes it convenient to adjust the length and height of the body. There is no need to redesign the body structure. The production molds of the joint structure are reused, which shortens the development cycle and reduces the production cost. 2. The beam system structure is extruded and molded, which makes it easy to adjust the production length of the beam system structure. There is no need to design molds of various length specifications, which is highly flexible and effectively saves production costs. The vertical support part of the A-pillar lower joint provides vertical load. The first upper beam is connected to the A-pillar lower joint to form an A-pillar support structure, which has good support strength when adjusting the vehicle height. 3. The joint structure adopts die casting process, which reduces the number of parts while ensuring the strength of the joint structure and facilitates rapid production; the A-pillar lower joint is formed by the die-cast first joint body and die-cast second joint body connected together, which further improves the support strength and ensures the personal safety of the driver; the two top joints are connected to form a cavity beam type joint, which increases the strength and improves the anti-roll performance; the bottom joint extends backward to facilitate the connection of the first lower side beam, and the top joint A extends obliquely to the A-pillar upper joint to facilitate the connection of the oblique A-pillar, ensuring that the oblique design of the A-pillar reduces wind resistance, provides support strength, and facilitates the adjustment of the vehicle height; 4. The first front joint of the A-pillar upper connector faces the lower joint of the A-pillar, which facilitates the inclined connection of the straight A-pillar. The first rear joint faces the rear, which facilitates the connection of the longitudinal first lower side beam. The first inner joint is located at the intersection of the first front joint and the first rear joint, which improves the strength of the connection and facilitates the connection of the roof crossbeam. 5. The B-pillar joint can be connected to the second upper beam, the third upper beam and the B-pillar through the second front joint, the second rear joint and the second lower joint respectively. The second lower joint is connected to the joints on the front and rear sides in an arc transition, which can release stress. The U-shaped second lower joint has a certain strength and is connected to the front joint and the rear joint through the flap on its U-shaped arm to improve strength. 6. The B-pillar joint can be connected to the roof crossbeam through the second inner joint. The second front joint, the second rear joint and the second lower joint form a T-shaped structure. The T-shaped structure of the second front joint, the second rear joint and the second inner joint provides higher strength and facilitates adjustment of vehicle length and height. It can be die-cast while ensuring strength. 7. The rear wheel cover joint has an upper wheel cover joint that can be connected to the C-pillar. The second lower beam is connected through the front wheel cover joint. The reinforcing ribs extending vertically along the surface of the cover on the upper wheel cover joint can improve the vertical support strength. 8. The floor beam is installed at the front end of the cover through the beam mounting plate. When the beam mounting plate is connected to the front joint of the wheel cover on the second lower beam, it can indirectly support the floor beam through the second lower beam, thereby improving the support strength. The recessed beam mounting groove facilitates positioning and installation while also improving the support strength. 9. The rear wheel arch connector is connected to the bracket via a carrier plate. The D-pillar is installed via the D-pillar mounting groove of the bracket, which is suitable for extended vehicle body designs. 10. The D-pillar joint is connected to the C-pillar joint via the fourth upper side beam and to the rear wheel arch joint via the D-pillar, which lengthens the rear of the vehicle body and improves the structural strength of the rear. 11. The method for manufacturing the body side frame structure provided by the present invention uses a straight beam structure of a set length through extrusion molding, which facilitates the adjustment of the length of the upper beam, lower beam, A-pillar and other beam structures; the joint structure adopts the die casting process, which reduces the number of parts and ensures the structural strength of the joint; the straight beam structure makes it easy to adjust the length to adjust the body height and length, reduces the design of development molds, shortens the development cycle and saves production costs; 12. The manufacturing method of the long body side frame structure is to connect the D-pillar with the fourth upper side beam, and connect the C-pillar and D-pillar with the middle side beam. At the same time, the middle of the middle side beam is connected to the top of the rear wheel arch joint, which lengthens the body while ensuring the strength of the body frame. The vehicle body side frame structure involved in this invention is formed by splicing a beam system structure with joints, which reduces the number of parts and improves production efficiency. The beam system structure includes multiple straight beams, which are suitable for box-type vehicles. The length or height of the vehicle body can be adjusted by adjusting the length of the beam system structure without adjusting the joint structure. This facilitates the adjustment of the vehicle body length and height, eliminates the need to redesign the vehicle body structure, reuses the production molds of the joint structure, shortens the development cycle, and reduces production costs. Attached Figure Description

[0025] Figure 1 : Structural diagram of the vehicle body side frame structure; Figure 2 : A structural diagram of the rear joint structure of the vehicle body side frame structure, excluding the beam system structure; Figure 3 A schematic diagram of the first connector body of the A-pillar under-pillar joint from a single perspective. Figure 4 : A structural schematic diagram of the first connector body of the A-pillar under-pillar connector from another perspective; Figure 5 Schematic diagram of one side of the second connector body Figure 6 : A schematic diagram of the structure on the other side of the second connector body; Figure 7 A schematic diagram of the A-pillar connector from one perspective; Figure 8 : A structural schematic diagram of the joint on the A-pillar from another perspective; Figure 9 : A three-dimensional structural diagram of the connector on the B-pillar; Figure 10 : A front view of the connector on the B-pillar; Figure 11 : Schematic diagram of the other side of the connector on the B-pillar; Figure 12 : 3D structural diagram of the D-pillar connector; Figure 13 : A front view structural diagram of the D-pillar joint; Figure 14 : A front view structural diagram of the rear wheel arch connector; Figure 15 : A three-dimensional structural diagram of the rear wheel arch connector; Figure 16 : Schematic diagram of the cross-section of column C; Figure 17 : Schematic diagram of the cross-sectional structure of the middle and side beams; Figure 18 : A schematic diagram of the structure in which the middle beam is fixed to the C-column via a connecting plate; Figure 19 : A comparative schematic diagram of the lengthened and heightened side frame structure of the vehicle body produced by the manufacturing method of the present invention; Wherein: 1-Beam system structure; 11-First upper beam; 12-Second upper beam; 13-Third upper beam; 14-Fourth upper beam; 15-B-column; 16-C-column; 161-Vertical side plate; 17-D-column; 18-First lower beam; 19-Second lower beam; 110-Middle beam; 111-Vertical bottom plate; 2-Joint structure; 21-Lower joint of A-column; 211-Vertical support plate; 212-Bottom joint side plate; 213-Top joint side plate; 214-Inner groove; 215-First joint body; 216-Second joint body; 22-Upper joint of A-column; 221-First front joint part; 222-First rear joint part; 223-First inner joint part; 23-Upper joint of B-column; 230-Second flap; 231-Second front joint part; 232-Second lower... 2321-First flap; 233-Second rear joint; 234-Second inner joint; 235-Upper panel; 236-Grate body; 237-Arc segment; 238-Lower plate; 239-Vertical plate; 24-C-pillar upper joint; 25-D-pillar joint; 251-Fourth front joint; 252-Fourth lower joint; 235-Fourth inner joint; 26-B-pillar lower joint; 27-Rear wheel arch joint; 271-Cover body; 272-Wheel arch upper joint; 273-Wheel arch front joint; 274-Wheel arch rear joint; 2741-Carrier plate; 2742-Bracket; 275-Crossbeam mounting plate; 276-Crossbeam mounting groove; 277-Suspension mounting plate; 2771-Diagonal brace plate; 3-Connecting plate; 31-Extension plate; 32-Anti-roll plate. Detailed Implementation

[0026] Embodiments of the present invention are described in detail below, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary, and the drawings are not drawn to scale and are intended to explain the present invention, and should not be construed as limiting the present invention.

[0027] In the description of this invention, it should be understood that the terms "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] This invention relates to a vehicle body side frame structure, applicable to, but not limited to, box-type vehicles. It is formed by splicing a beam system structure 1 with a joint structure 2, reducing numerous components and improving production efficiency. The beam system structure 1 includes multiple straight beams. The first upper beam 11 is spliced ​​at both ends to the lower A-pillar joint 21 and the upper A-pillar joint 22, respectively. The upper A-pillar joint 22 is connected to the upper B-pillar joint 23, and the upper B-pillar joint 23 is connected to the upper C-pillar joint 24 via upper beams. The lower A-pillar joint 21 is connected to the lower B-pillar joint 26, and the lower B-pillar joint 26 is connected to the rear wheel arch joint 27 via lower beams, forming the vehicle body side frame. The beam system structure 1 is a straight structure, suitable for box-type vehicles. Adjusting the length of the beam system structure 1 allows for adjustment of the vehicle body length or height without adjusting the joint structure 2, facilitating adjustments to the vehicle body length and height. It eliminates the need for redesigning the vehicle body structure, allows reuse of the production molds for the joint structure 2, shortening the development cycle and reducing production costs.

[0031] A vehicle body side frame structure, specifically, such as Figure 1-19As shown, the vehicle includes a beam structure 1 and a joint structure 2. Multiple joints of the beam structure 1 and joint structure 2 are spliced ​​together to form the side frame of the vehicle body. The beam structure 1 includes multiple straight beams, which facilitates the adjustment of the vehicle body length and height without changing the structure of the joint structure 2. When adjusting the length of the beam structure 1, the connection angle between the beam structure 1 and the joint structure 2 can remain unchanged. The joint structure 2 includes a lower A-pillar joint 21, an upper A-pillar joint 22, an upper B-pillar joint 23, a lower B-pillar joint 26, an upper C-pillar joint 24, and a rear wheel arch joint 27. The straight beams include a first upper side beam 11, a B-pillar 15, a C-pillar 16, an upper side beam, and a lower side beam. The two ends of the first upper side beam 11 are spliced ​​to the lower A-pillar joint. The top of the A-pillar upper connector 22 and the A-pillar lower connector are connected to the A-pillar upper connector, B-pillar upper connector and C-pillar upper connector in sequence through multiple upper side beams. That is, the A-pillar upper connector 22 and the B-pillar upper connector 23, and the B-pillar upper connector 23 and the C-pillar upper connector 24 are respectively connected by upper side beams. The bottom end of the first upper side beam is connected to the A-pillar lower connector, and the top end is inclined backward and connected to the A-pillar upper connector. The A-pillar lower connector 21 and the B-pillar lower connector 26, and the B-pillar lower connector 26 and the rear wheel arch connector 27 are respectively connected by lower side beams. The B-pillar 15 is spliced ​​with the B-pillar upper connector 23 and the B-pillar lower connector 26 at both ends, and the C-pillar 16 is spliced ​​with the C-pillar upper connector 24 and the rear wheel arch connector 27 at both ends.

[0032] In one implementation, such as Figure 2-13 As shown, the beam structure is extruded, and the joint structure 2 is produced using a die-casting process. One or more die-cast parts are connected to form a joint structure. The extruded beam structure 1 allows for easy adjustment of its length to suit different vehicle body lengths and heights. The upper beam includes a second upper beam 12, with both ends spliced ​​between the A-pillar joint 22 and the B-pillar joint 23, and a third upper beam 13, with both ends spliced ​​between the B-pillar joint 23 and the C-pillar joint 24. The lower beam includes a first lower beam 18, with both ends spliced ​​between the A-pillar lower joint 21 and the B-pillar lower joint 26, and a second lower beam 19, with both ends spliced ​​between the B-pillar lower joint 26 and the rear wheel arch joint 27. The use of die-cast parts for the joint structure 2 reduces the number of parts while ensuring its strength, facilitating rapid production. The extruded beam structure 1 allows for easy adjustment of its production length, eliminating the need for molds of various length specifications, providing high flexibility and effectively saving production costs.

[0033] In one implementation, such as Figure 3-4 As shown, the beam structure is extruded and formed; the A-column lower joint 21 includes a vertical support part, a bottom joint part located at the bottom of the vertical support part, and a top joint part located at the top of the vertical support part; the bottom joint part is located at the bottom of the vertical support part and extends backward, and the top joint part 213 is located at the top of the vertical support part and extends obliquely towards the A-column upper joint.

[0034] Based on the A-pillar under-joint 21 including a vertical support part, such as Figure 3-6 As shown, the joint structure 2 is produced by die casting; one or more die castings are connected to form a joint structure; the A-pillar lower joint 21 is a cavity beam-type structure formed by connecting a first joint body 215 and a second joint body 215, both of which are die castings; the first joint body 215 includes a vertical support plate 211, a top joint side plate 213 that extends obliquely from the top of the vertical support plate 211 toward the A-pillar upper joint 22, and a bottom joint side plate 212 that extends sequentially from the bottom of the vertical support plate 211; the first joint body 215 has an inner groove 214 that extends from the top joint side plate 213 through the vertical support plate 211 to the bottom joint side plate 212; when the first joint body 215 and the second joint body 216 are connected, they form a top joint part and a bottom joint part that are both cavity beam-type. The A-pillar lower joint 21 is formed by the die-cast first joint body 215 and the die-cast second joint body 216 being connected together, which further improves the support strength and ensures the personal safety of the driver; the two top joints are connected to form a cavity beam type joint, which increases the strength and improves the anti-roll performance.

[0035] In a specific plan, such as Figure 3-6 As shown, the second connector body 216 also has a top connector side plate 213, a vertical support plate 211, a bottom connector side plate 212, and an inner groove 214; the inner groove 214 extends from the top connector side plate 213 to the bottom connector side plate 214, and each inner groove 214 has staggered reinforcing ribs, which are connected to the groove wall. The inner groove 214 makes the vertical support plate 211 have a U-shaped cross section; when the first connector body 215 and the second connector body 216 are connected to form the A-pillar lower connector 21, the two top connector side plates 213 are connected to form the top connector part, the two bottom connector side plates 212 are connected to form the bottom connector part, and the two vertical support plates 211 are connected to form the vertical support part. The two inner grooves 214 are connected to form the inner cavity of the A-pillar lower connector 21. The reinforcing ribs of the first connector body 215 and the second connector body 216 can be correspondingly abutted; the first connector body 215 and the second connector body 216 can be welded or bolted together. The lower A-pillar joint 21 has an inner cavity with staggered reinforcing ribs to improve support strength. It provides vertical load through the vertical support part. The bottom joint extends backward to facilitate connection to the first lower side beam 18. The top joint A extends obliquely to the upper A-pillar joint 22 to facilitate connection to the oblique first upper side beam 11. This ensures that the oblique design of the A-pillar reduces wind resistance, provides support strength, and facilitates adjustment of the vehicle height.

[0036] Other joints in the joint structure 2 of the present invention can also be formed by connecting two die-cast joint bodies together, similar to the A-pillar joint 21, as needed.

[0037] In one implementation method, such as Figure 7-8As shown, the A-pillar upper connector 22 includes a first front connector portion 221 facing the A-pillar lower connector 21 and a first rear connector portion 222 facing rearward, as well as a first inner connector portion 223 located at the intersection of the first front connector portion 221 and the first rear connector portion 222; the upper end of the first upper beam 11 is connected to the first front connector portion 221, and the lower end is inclined forward and connected to the top connector portion. Specifically, the lower end of the first upper beam 11 is connected to the top connector portion. The first front connector portion 221 of the A-pillar upper connector 22 faces the A-pillar lower connector 21, which facilitates the inclined connection of the straight first upper beam 11; the first rear connector portion 222 faces rearward, which facilitates the connection of the longitudinal first lower beam 18; the first inner connector portion 223 is located at the intersection of the first front connector portion 221 and the first rear connector portion 222, which improves the strength of the connection and facilitates the connection of the roof crossbeam.

[0038] In some implementations, such as Figure 9-11 As shown, the B-pillar joint 23 includes a second front joint portion 231, a second lower joint portion 232, and a second rear joint portion 233. The connection between the second lower joint portion 232 and the second front joint portion 231 and the second rear joint portion 233 is an arc-shaped transition connection. The second lower joint portion 232 includes a U-shaped structure, with first flaps 2321 connected to both sides of the U-shaped arm. The first flaps 2321 extend in an arc-shaped transition connection to the corresponding second front joint portion 231 or second rear joint portion 233. The arc-shaped transition connection between the second lower joint portion 232 and the joint portions on both sides can release stress. The U-shaped second lower joint portion 232 has a certain strength, and the two first flaps 2321 on its U-shaped arm extend to connect the front joint portion and the rear joint portion, thereby improving the strength.

[0039] In one specific implementation, such as Figure 9-11 As shown, the B-pillar upper connector 23 includes an upper panel 235, a grille body 236 located below the upper panel 235, and a U-shaped second lower connector portion 232 located at the bottom end of the grille body 236. The U-shaped arm of the second lower connector portion 232 extends forward and backward with arc-shaped segments 237, respectively. The two arc-shaped segments 237 are respectively connected to the lower plate 238 of the front connector portion b and the lower plate 238 of the second rear connector portion 233. The lower plate 238 is connected to the grille body 236 and is connected to the upper connector 236 through a vertical plate 239. Panel 235, grille body 236 with arc-shaped segments 237 on both sides, the second lower joint 232 has a first flap 2321 on the U-shaped arm; the second inner joint 234 is connected to the grille body 236 in a U-shaped structure, and the second flaps 230 on both sides of its U-shaped arm are connected to the upper panel 235. This structure ensures the structural strength of the B-pillar upper joint 23, so that the B-pillar upper joint 23 can be die-cast by die-casting mold, which facilitates smooth demolding after die-casting, and at the same time reduces the weight of the joint.

[0040] The C-pillar upper connector 24 and B-pillar lower connector 26 involved in this invention may be the same as or different from the B-pillar upper connector 23.

[0041] Each joint involved in this invention can be designed as a U-shaped structure or a cavity beam structure.

[0042] In one implementation, such as Figure 1 , 14 As shown in Figure -15, the rear wheel arch connector 27 includes a cover body 271 and a wheel arch upper connector portion 272 disposed on the cover body 271. The front end of the cover body 271 is inclined forward and downward and connected to the wheel arch front connector portion 273, providing both vertical and longitudinal support loads. The wheel arch upper connector portion 272 is provided with reinforcing ribs extending vertically on the surface of the cover body 271. The two ends of the second lower side beam 19 are respectively connected to the rear end of the B-pillar lower connector 26 and the wheel arch front connector portion 273. The C-pillar 16 can be connected through the wheel arch upper connector portion 272, and the second lower side beam 19 can be connected through the wheel arch front connector portion 273. The reinforcing ribs extending vertically along the surface of the cover body 271 on the wheel arch upper connector can improve the vertical support strength.

[0043] Based on the rear wheel arch connector 27, which includes a cover 271, such as Figure 14-15 As shown, a crossbeam mounting plate 275 is provided on the front end of the cover 271, located above the wheel cover front joint 272. The crossbeam mounting plate 275 is supported on the second lower side beam 19 when it connects to the wheel cover front joint 272. The crossbeam mounting plate 275 is recessed to form a crossbeam mounting groove 276, with an open inner end. The floor crossbeam is installed at the front end of the cover 271 through the crossbeam mounting plate 275, and the second lower side beam 19 supports the crossbeam mounting plate 275, which can improve the support strength and stability. The recessed crossbeam mounting groove 276 facilitates positioning and installation while improving the support strength.

[0044] Based on the rear wheel arch connector 27, which includes a cover 271, such as Figure 14-15 As shown, a suspension mounting plate 277 is provided on the side of the cover 271 closest to the vehicle interior. The front and rear sides of the suspension mounting plate 277 are provided with diagonal bracing plates 2771 connected to the cover 271. The suspension mounting plate 277 is provided with mounting holes for mounting the suspension structure. The two diagonal bracing plates 2771 are in the shape of an inverted V or an inverted V.

[0045] Based on the rear wheel arch connector 27, which includes a cover 271, such as Figure 14-15 As shown, the rear wheel arch connector 27 also includes a rear wheel arch connector portion 274 located at the rear end of the cover body 271. The rear wheel arch connector portion 274 includes a carrier plate 2741 connected to the cover body and a bracket 2742 connected to the carrier plate. The bracket 2742 is provided with a D-pillar mounting groove for mounting the D-pillar 17. By connecting the bracket 2742 to the carrier plate 2741 and mounting the D-pillar through the D-pillar mounting groove of the bracket 2742, it is suitable for extended vehicle body designs while ensuring the structural strength of the rear end of the vehicle body.

[0046] To maintain stability and support strength when the vehicle body is extended, such as Figure 1-2 and Figure 12-13 As shown, the joint structure 2 also includes a D-column joint 25; the straight beam also includes a fourth upper beam 14 and a D-column 17, with the top and bottom ends of the D-column 17 connected to the rear ends of the D-column joint 25 and the rear wheel arch joint 27, respectively; the two ends of the fourth upper beam 14 are connected to the C-column upper joint 24 and the D-column joint 25, respectively.

[0047] The joint structure 2 also includes a D-pillar joint 25, such as Figure 1 As shown, the beam structure 1 also includes a middle side beam 110, with both ends of the middle side beam 110 connected to the C-column 16 and the D-column 17, and spaced below the fourth upper side beam 14; the top of the rear wheel arch joint 27 is fixed to the middle side beam 110, so that the connection point of the middle side beam 110, the rear wheel arch joint 27 and the D-column 17 forms a triangular structure, and the connection point of the middle side beam 110, the rear wheel arch joint 27 and the C-column 16 forms a triangular structure.

[0048] like Figure 12-13 As shown, the D-pillar joint 25 includes a fourth front joint 251, a fourth lower joint 252 and a fourth inner joint 253. The front and rear ends of the fourth upper beam 14 are respectively connected to the second rear joint 233 and the fourth front joint 251 of the B-pillar upper joint 23. The fourth lower joint 252 and the fourth inner joint 253 are both U-shaped structures.

[0049] like Figure 18 As shown, vertical side plates 161 are provided on the front and rear sides of C-pillar 16, and vertical bottom plate 111 is provided at the bottom of the middle side beam 110. The end of the middle side beam 110 can be connected to C-pillar 16 and D-pillar 17 respectively by two connecting plates 3. The connection method is riveting or self-tapping screw connection. The main body of the connecting plate 3 has a U-shaped structure to fit and fit the middle side beam 110. The U-shaped bottom plate of the main body of the connecting plate 3 extends to one side with an extension plate 31. The end of the U-shaped arm away from the middle side beam 110 extends backward and to the side. There are anti-roll plates 32, extension plates 31, and two anti-roll plates 32 used to fit and connect the adjacent walls of the C-pillar 16 (or D-pillar 17) to prevent the center beam 110 from tilting up and down relative to the C-pillar 16. One connecting plate 3 is fixed to the C-pillar 16 on one side and fixed to the end of the center beam 110 on the other side. Specifically, the extension plate 31 is riveted to the side of the C-pillar 16 (vehicle width direction), the anti-roll plates 32 are fitted and bolted to the rear side of the C-pillar 16 (vehicle rear direction), and the main body of the connecting plate 3 is riveted to the center beam 110. Two connecting plates 3 can be used at each end of the center beam 110 to fix it to the C-pillar 16 or D-pillar 17, such as two connecting plates 3 connecting the center beam 110 and the C-pillar 16 on both sides of the center beam 110 (vehicle width direction).

[0050] In a specific implementation plan, such as Figure 1As shown, the first rear joint 222 of the A-pillar upper joint 22 is sequentially connected to the second upper side beam 12, the B-pillar upper joint 23, the third upper side beam 13, the C-pillar upper joint 24, the fourth upper side beam 14, and the D-pillar joint 25. The second upper side beam 12, the third upper side beam 13, and the fourth upper side beam 14 are coaxial or parallel. The top of the first upper side beam 11 is connected to the first front joint 221 of the A-pillar upper joint 22, and the lower end is inclined forward to connect to the top joint of the A-pillar lower joint 21. The bottom joint of the A-pillar lower joint 21 is sequentially connected to the first lower side beam 18, the B-pillar lower joint 26, and the second lower beam 19. The lower side beam 18 and the second lower side beam 19 are coaxial or parallel. The rear end of the second lower side beam 19 is connected to the front joint 273 of the rear wheel arch. The two ends of the B-pillar 15 are connected to the upper joint 23 and the lower joint 26 of the B-pillar, respectively. The top and bottom of the C-pillar 16 are connected to the upper joint 272 of the wheel arch and the upper joint 24 of the C-pillar and the rear wheel arch joint 27, respectively. The top and bottom of the D-pillar 17 are connected to the rear joint 274 of the wheel arch and the rear joint 27 of the rear wheel arch, respectively. The front and rear ends of the middle side beam 110 are fixed to the C-pillar 16 and the D-pillar 17, respectively. The top of the rear wheel arch joint 27 is fixed to the middle side beam 110.

[0051] The vehicle body side frame of the present invention can be lengthened by extending the beam structure 1 as needed, such as... Figure 19 As shown, the upper and lower side beams are lengthened; the vertical beams such as B-pillar 15, C-pillar 16, and D-pillar 17 are heightened, while the first upper side beam 11 and the first lower side beam 18 are lengthened; in order to make the vehicle body longer while ensuring structural strength, multiple B-pillars 15, as well as matching B-pillar upper joints 23, B-pillar lower joints 26, upper and lower side beams can be added between the A-pillar upper joint 22 and the C-pillar upper joint 24, as well as suitable B-pillar upper joints 23, B-pillar lower joints 26, upper and lower side beams, etc. Figure 19 As shown in the long axis diagram, there are two B-pillar upper joints 23 connected between the A-pillar upper joint 22 and the C-pillar upper joint 24 via three upper side beams. There are two B-pillar lower joints 26 connected between the A-pillar lower joint 21 and the rear wheel arch joint 27 via three lower side beams. Each pair of corresponding B-pillar upper joints 23 and B-pillar lower joints 26 is connected by a B-pillar 15.

[0052] In another aspect, the present invention provides a method for manufacturing a vehicle side frame structure, used to manufacture the vehicle side frame structure provided by the present invention, the method comprising, S1. Extrusion molding of multiple straight beams, the length of which is set according to the vehicle length and height requirements; S2, die-cast B-pillar upper connector, B-pillar lower connector, C-pillar upper connector, rear wheel arch connector, and first connector body and second connector body; the first connector body and the second connector body are connected to form a cavity beam type A-pillar lower connector. S3. Connect the upper and lower ends of the first upper beam 11 to the upper connector 22 and the lower connector 21 of the A-pillar respectively. Connect the two ends of the B-pillar 15 to the upper connector 23 and the lower connector 26 of the B-pillar. Connect the two ends of the C-pillar 16 to the upper connector 24 of the C-pillar and the rear wheel arch connector 27. S4. The upper joint 22 of column A and the upper joint 23 of column B are connected by the second upper beam 12, and the upper joint 23 of column B and the upper joint 24 of column C are connected by the third upper beam 13. S5. The lower A-pillar connector 21 and the lower B-pillar connector 26 are connected by multiple lower side beams, and the lower B-pillar connector 26 is connected to the front end of the rear wheel arch connector 27.

[0053] In another aspect, the present invention provides a method for manufacturing a long vehicle body side frame structure, including the steps S1-S5 described above, and further including, S6. Connect the C-pillar joint 24 and the D-pillar joint 25 through the fourth upper beam 14, and connect the two ends of the D-pillar 17 to the rear end of the D-pillar joint 25 and the rear wheel arch joint 27 respectively. S7. The straight beam also includes a middle side beam 110, which connects the two ends of the middle side beam 110 to the C-column 16 and the D-column 17, and the top of the rear wheel arch joint 27 in the middle.

[0054] This invention provides a method for manufacturing a vehicle side frame structure, such as... Figure 19 As shown, using a straight beam structure 1, when adjusting the vehicle length or height, the original joint structure 2 can be used. When lengthening the vehicle body, there is no need to adjust the length of the first upper beam 11; simply lengthen the upper and lower beams on the rear side of the A-pillar joint. When increasing the vehicle height, the lengths of the first upper beam 11, the second upper beam 12, and the first lower beam 18 are correspondingly increased, so that the connection angles between the two ends of the first upper beam 11 and the A-pillar upper joint 22 and the A-pillar lower joint 21 remain unchanged, facilitating flexible adjustment of the vehicle body length.

[0055] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of protection of this invention is defined by the appended claims and their equivalents.

Claims

1. A vehicle body side frame structure, characterized in that: It includes beam systems and multiple joint structures connecting the beam systems; the beam system includes multiple straight beams; The connector structure includes a lower A-pillar connector, an upper A-pillar connector, an upper B-pillar connector, a lower B-pillar connector, an upper C-pillar connector, and a rear wheel arch connector. The straight beam includes a B-column, a C-column, an upper side beam, and a lower side beam; the top of the lower joint of the A-column is connected to the upper joint of the A-column, the upper joint of the B-column, and the upper joint of the C-column in sequence through multiple upper side beams; the bottom end of the first upper side beam is connected to the lower joint of the A-column, and the top end is inclined backward and connected to the upper joint of the A-column; the bottom of the lower joint of the A-column is connected to the lower joint of the B-column, and the lower joint of the B-column is connected to the rear wheel arch joint through lower side beams.

2. The vehicle body side frame structure as described in claim 1, characterized in that: The beam structure is extruded; the lower A-pillar joint includes a vertical support part, a bottom joint part, and a top joint part; the bottom end of the first upper beam is connected to the top joint part, and together with the lower A-pillar joint, they form the A-pillar support structure of the vehicle body side frame.

3. The vehicle body side frame structure as described in claim 2, characterized in that: The joint structure includes a die-cast part; the lower joint of the A-pillar is a cavity beam-type structure formed by connecting a first joint body and a second joint body, both of which are die-cast parts; the first joint body includes a vertical support plate, a top joint side plate that extends obliquely from the top of the vertical support plate toward the upper joint of the A-pillar, and a bottom joint side plate that extends sequentially from the bottom of the vertical support plate; the first joint body has an inner groove that extends from the top joint side plate through the vertical support plate to the bottom joint side plate; when the first joint body and the second joint body are connected together, they form a top joint part and a bottom joint part that are both cavity beam-type.

4. The vehicle body side frame structure as described in claim 1, characterized in that: The A-pillar connector includes a first front connector portion facing the lower A-pillar connector and a first rear connector portion facing backward, as well as a first inner connector portion located at the intersection of the first front connector portion and the first rear connector portion.

5. The vehicle body side frame structure as described in claim 1, characterized in that: The B-pillar connector includes a second front connector, a second lower connector, and a second rear connector; the connection between the second lower connector and the second front connector and the second rear connector is an arc-shaped transition connection; the second lower connector includes a U-shaped structure, and the two sides of the U-shaped arm of the second lower connector are connected to a first flap, and the first flap extends in an arc-shaped transition to connect to the corresponding second front connector or second rear connector.

6. The vehicle body side frame structure as described in claim 5, characterized in that: The B-pillar connector also includes a second inner connector located at the intersection of the second front connector, the second lower connector, and the second rear connector; the second front connector, the second rear connector, and the second lower connector form a T-shaped structure; the second front connector, the second rear connector, and the second inner connector form a T-shaped structure; the two sides of the second inner connector are respectively connected to the second front connector and the second rear connector in an arc transition.

7. A vehicle body side frame structure as described in claim 1, characterized in that: The rear wheel cover joint includes a cover body and a wheel cover upper joint part provided on the cover body. The front end of the cover body is inclined forward and downward and connected to the wheel cover front joint part. The wheel cover upper joint part is provided with a reinforcing rib extending vertically on the surface of the cover body. The two ends of the second lower side beam are respectively connected to the rear end of the B-pillar lower joint and the wheel cover front joint.

8. A vehicle body side frame structure as described in claim 7, characterized in that: The front end of the cover is provided with a crossbeam mounting plate located above the front joint of the wheel cover. The crossbeam mounting plate is supported on the second lower side beam when the second lower side beam is connected to the front joint of the wheel cover. The crossbeam mounting plate is recessed to form a crossbeam mounting groove, and the inner end of the crossbeam mounting groove is open.

9. A vehicle body side frame structure as described in claim 7, characterized in that: The rear wheel cover joint also includes a rear wheel cover joint portion located at the rear end of the cover body. The rear wheel cover joint portion includes a carrier plate connected to the cover body and a bracket connected to the carrier plate. The bracket is provided with a D-pillar mounting groove for mounting the D-pillar.

10. A vehicle body side frame structure as described in claim 1, characterized in that: The joint structure also includes a D-pillar joint; the straight beam also includes a fourth upper beam and a D-pillar, with the top and bottom ends of the D-pillar connected to the rear ends of the D-pillar joint and the rear wheel arch joint, respectively; the two ends of the fourth upper beam are connected to the upper C-pillar joint and the D-pillar joint, respectively.

11. A method for manufacturing a vehicle body side frame structure, characterized in that: The method for manufacturing a vehicle side frame structure as described in any one of claims 3-10 includes... Multiple straight beams are extruded; the length of the multiple straight beams is set according to the vehicle length and height requirements. The die-cast parts form the upper B-pillar connector, lower B-pillar connector, upper C-pillar connector, rear wheel arch connector, and the first connector body and the second connector body; the first connector body and the second connector body are connected to form a cavity beam type lower A-pillar connector. Connect the upper and lower ends of the first upper beam to the upper and lower joints of the A-pillar, respectively. Connect the two ends of the B-pillar to the upper and lower joints of the B-pillar. Connect the two ends of the C-pillar to the upper joint of the C-pillar and the rear wheel arch joint. The upper joint of column A is connected to the upper joint of column B by the second upper beam, and the upper joint of column B is connected to the upper joint of column C by the third upper beam. Multiple lower beams connect the lower joints of the A-pillar and the B-pillar, and the lower joint of the B-pillar is connected to the front end of the rear wheel arch joint.

12. A method for manufacturing a long vehicle body side frame structure, characterized in that: The method for manufacturing a vehicle side frame structure as described in claim 1 or 3 includes... Multiple straight beams are extruded; the length of the multiple straight beams is set according to the vehicle length and height requirements. The die-cast parts form the upper B-pillar connector, lower B-pillar connector, upper C-pillar connector, rear wheel arch connector, and the first connector body and the second connector body; the first connector body and the second connector body are connected to form a cavity beam type lower A-pillar connector. Connect the upper and lower ends of the first upper beam to the upper and lower joints of the A-pillar, respectively. Connect the two ends of the B-pillar to the upper and lower joints of the B-pillar. Connect the two ends of the C-pillar to the upper joint of the C-pillar and the rear wheel arch joint. The upper joint of column A is connected to the upper joint of column B by the second upper beam, and the upper joint of column B is connected to the upper joint of column C by the third upper beam. Multiple lower beams are used to connect the lower joint of the A-pillar to the lower joint of the B-pillar, and the lower joint of the B-pillar to the front end of the rear wheel arch joint. The upper C-pillar connector and the lower D-pillar connector are connected by the fourth upper beam, and the two ends of the lower D-pillar are respectively connected to the rear end of the lower D-pillar connector and the rear wheel arch connector. The straight beam also includes a middle side beam, which connects the two ends of the middle side beam to the C-column and D-column, and the middle part to the top of the rear wheel arch joint.

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