Body-in-white assembly and assembling method

Abstract

The invention belongs to the technical field of body-in-white, and discloses a body-in-white assembly and an assembling method.The body-in-white assembly comprises a framework and a front wall assembly, the framework comprises a floor, a rear wall, a left side wall, a right side wall, an air window cross beam and a top cover which are sequentially welded, and the stable framework can still be formed through tailor welding in the state that no front wall exists; the strength of the front portion of a cab in the collision process is effectively guaranteed, the collision safety of a body-in-white assembly is enhanced, the front wall assembly comprises a front wall, an instrument board body and an instrument board cross beam, the front wall is of an integrally-formed structure and is different from a stamping part tailor-welded front wall of a traditional heavy commercial vehicle, and the front wall assembly is few in part, light in weight and capable of being independently subjected to anti-corrosion treatment; electrophoresis and paint spraying are not carried out along with the framework, the white vehicle body coating cost is reduced, the instrument board cross beam is installed on the front wall, the instrument board body is installed on the instrument board cross beam and the instrument board body, the front wall is riveted and fixed to the framework, the instrument board body, the instrument board cross beam and the front wall which is integrally die-cast are separately assembled, and the assembly efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of body-in-white, and particularly to a body-in-white assembly and an assembly method thereof. Background Art

[0002] With the development of vehicle manufacturing technology, the requirements for the structural strength of the vehicle body have been gradually increased. The body-in-white assembly includes structures such as the front panel, floor, side panel, and roof panel, and forms a welded body-in-white assembly after stamping and welding of steel plates.

[0003] The structure of the body-in-white is complex, resulting in complex processes, low production efficiency, high costs, low product precision, poor assembly quality, and reduced body quality. The front panel of traditional heavy commercial vehicles uses stamped parts for welding, with a large number of parts and heavy weight. Moreover, for an integrated front panel structure that integrates the front panel, floor, upper mounting of the suspension, and side panel A-pillar, it is impossible to perform sub-assembly of the inner panel of the front panel and the instrument panel and then integrally assemble them onto the body-in-white skeleton.

[0004] Therefore, there is an urgent need for a body-in-white assembly and an assembly method to solve the above problems. Summary of the Invention

[0005] According to one aspect of the present invention, there is provided a body-in-white assembly. The front panel is integrally die-cast, with fewer parts and lighter weight. The instrument panel body and the instrument panel crossbeam are separately sub-assembled with the front panel, improving the assembly efficiency. Moreover, the strength of the front part of the cab during a collision can still be ensured in the state without the front panel, enhancing the collision safety of the body-in-white assembly.

[0006] In order to solve the above problems existing in the prior art, the present invention adopts the following technical solutions:

[0007] A body-in-white assembly, comprising:

[0008] A skeleton, the skeleton includes a floor, a rear panel, a left side panel, a right side panel, a windshield crossbeam, and a roof panel that are sequentially welded;

[0009] A front panel assembly, the front panel assembly includes a front panel, an instrument panel body, and an instrument panel crossbeam. The front panel is an integrally formed structure. The instrument panel crossbeam is installed on the front panel, and the instrument panel body is installed on the instrument panel crossbeam and the instrument panel body. The front panel is riveted and fixed to the skeleton.

[0010] Preferably, the front panel includes a front panel body, a first crossbeam, and a second crossbeam. The first crossbeam and the second crossbeam are respectively arranged at the top and bottom of the front panel body, and a plurality of reinforcing ribs are arranged on both the first crossbeam and the second crossbeam.

[0011] Preferably, the front panel further includes a plurality of bosses, and the plurality of bosses are all arranged on the first cross beam and are used to fix the instrument panel cross beam and the instrument panel body.

[0012] Preferably, the front panel further includes a fixing plate, and the fixing plate is arranged on the front panel body.

[0013] Preferably, the body-in-white assembly further includes a connecting piece, the front panel is provided with a connecting hole, and the connecting piece passes through the connecting hole and is fixedly connected to the skeleton.

[0014] Preferably, there are a plurality of the connecting pieces, the front panel is provided with a plurality of the connecting holes, and the plurality of connecting pieces respectively pass through the corresponding connecting holes and are all fixedly connected to the skeleton.

[0015] According to another aspect of the present invention, the present invention provides a method for assembling a body-in-white assembly. Through the implementation of the above body-in-white assembly, the method for assembling the body-in-white assembly includes:

[0016] S100: Sequentially butt-weld and connect the floor, the rear panel, the left side panel, the right side panel, the windshield cross beam and the roof cover to form the skeleton;

[0017] S200: Install the instrument panel cross beam on the front panel through bolts, and then install the instrument panel body on the instrument panel cross beam and the front panel through bolts to form the front panel assembly;

[0018] S300: Rivet and fix the front panel assembly to the skeleton.

[0019] Preferably, the body-in-white assembly further includes a connecting piece, the front panel is provided with a connecting hole, and the connecting piece passes through the connecting hole and is fixedly connected to the skeleton;

[0020] The method for assembling the body-in-white assembly further includes, between S200 and S300:

[0021] S210: Connect the front panel assembly to the skeleton through the connecting piece.

[0022] Preferably, the method for assembling the body-in-white assembly further includes, between S100 and S200:

[0023] S110: Perform electrophoresis and painting treatment on the skeleton.

[0024] Preferably, the method for assembling the body-in-white assembly further includes, after S110:

[0025] S120: Perform anti-corrosion treatment on the front panel.

[0026] The beneficial effects of the present invention are:

[0027] The body-in-white assembly provided by the present invention, when the skeleton is assembled by welding, first weld the floor and the rear panel, then weld them with the left side panel and the right side panel, and finally weld the windshield crossbeam and the roof panel to form the overall load-bearing frame structure of the body-in-white assembly. In the state without the front panel, the A-pillars of the left side panel, the A-pillars of the right side panel, the windshield crossbeam, and the side sills on the left and right sides of the front part of the floor are welded and fixed to form a complete frame structure, effectively ensuring the strength of the front part of the cab during the collision, enhancing the collision safety of the body-in-white assembly, and the assembled stable skeleton is separately subjected to electrophoresis and painting. The front panel assembly includes a front panel, an instrument panel body, and an instrument panel crossbeam. The front panel is integrally die-cast, which is different from the traditional front panel assembled by stamping parts of heavy commercial vehicles. It has fewer parts and lighter weight, and is separately subjected to anti-corrosion treatment without undergoing electrophoresis and painting with the skeleton, reducing the painting cost of the body-in-white. First, assemble the instrument panel crossbeam to the front panel, then assemble the instrument panel body to the instrument panel crossbeam and the front panel. Finally, connect the front panel assembled with the instrument panel to the skeleton by self-piercing riveting to complete the assembly of the body-in-white assembly. The instrument panel body and the instrument panel crossbeam are separately sub-assembled with the integrally die-cast front panel on the interior sub-assembly line, improving the assembly efficiency.

[0028] The method for assembling the body-in-white assembly provided by the present invention sequentially welds and connects the floor, the rear panel, the left side panel, the right side panel, the windshield crossbeam, and the roof panel to form a skeleton, installs the instrument panel crossbeam on the front panel by bolts, then installs the instrument panel body on the instrument panel crossbeam and the front panel by bolts to form a front panel assembly, and rivets and fixes the front panel assembly to the skeleton. The front panel is integrally die-cast, which is different from the traditional front panel assembled by stamping parts of heavy commercial vehicles. It has fewer parts and lighter weight, and is separately subjected to anti-corrosion treatment without undergoing electrophoresis and painting with the skeleton, reducing the painting cost of the body-in-white. In the state without the front panel, a complete frame structure is formed, effectively ensuring the strength of the front part of the cab during the collision and enhancing the collision safety of the body-in-white assembly. The instrument panel body and the instrument panel crossbeam are separately sub-assembled with the integrally die-cast front panel on the interior sub-assembly line, improving the assembly efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is an exploded schematic view of the body-in-white assembly provided by Embodiment 1 of the present invention;

[0030] Figure 2 is a first structural schematic view of the front panel provided by Embodiment 1 of the present invention;

[0031] Figure 3 is a second structural schematic view of the front panel provided by Embodiment 1 of the present invention;

[0032] Figure 4 is a structural schematic view of the front panel assembly provided by Embodiment 1 of the present invention;

[0033] Figure 5Schematic diagram of the connection point between the front panel and the skeleton provided in the first embodiment of the present invention;

[0034] Figure 6 Flowchart of the white body assembly method provided in the second embodiment of the present invention.

[0035] Reference numerals:

[0036] 1. Skeleton; 11. Floor; 12. Rear panel; 13. Left side panel; 14. Right side panel; 15. Windshield crossbeam; 16. Roof panel;

[0037] 2. Front panel; 21. Front panel body; 22. First crossbeam; 23. Second crossbeam; 24. Boss; 25. Fixed plate;

[0038] 3. Instrument panel body;

[0039] 4. Instrument panel crossbeam;

[0040] 5. Reinforcing rib;

[0041] 6. Connector;

[0042] 7. Rivet. Detailed implementation manners

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present invention, rather than limiting the present invention. In addition, it should be noted that, for the sake of convenience of description, only parts related to the present invention rather than all structures are shown in the accompanying drawings.

[0044] In the description of the present invention, unless otherwise clearly defined and limited, the terms "connected", "connected to", and "fixed" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components or the interaction relationship between two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In the present invention, unless otherwise clearly specified and defined, the first feature being "on" or "under" the second feature may include direct contact between the first and second features, or may include the situation where the first and second features are not in direct contact but in contact through additional features therebetween. Moreover, the first feature being "above", "over" and "on top of" the second feature includes that the first feature is directly above and obliquely above the second feature, or merely means that the horizontal height of the first feature is higher than that of the second feature. The first feature being "under", "below" and "beneath" the second feature includes that the first feature is directly below and obliquely below the second feature, or merely means that the horizontal height of the first feature is lower than that of the second feature.

[0046] In the description of this embodiment, the orientation or positional relationships such as "upper", "lower", "left" and "right" are based on the orientation or positional relationships shown in the drawings, and are only for the convenience of description and simplifying the operations, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation. Therefore, it should not be construed as a limitation to the present invention. In addition, the terms "first" and "second" are only used for distinction in description and have no special meanings.

[0047] Embodiment 1

[0048] As Figures 1 - 5As shown in the figure, in this embodiment, the body-in-white assembly includes a frame 1 and a front panel assembly. Among them, the frame 1 includes a floor 11, a rear panel 12, a left side panel 13, a right side panel 14, a windshield crossbeam 15, and a roof panel 16, which are welded in sequence. The front panel assembly includes a front panel 2, an instrument panel body 3, and an instrument panel crossbeam 4. The front panel 2 is an integrally formed structure. The instrument panel crossbeam 4 is installed on the front panel 2, and the instrument panel body 3 is installed on the instrument panel crossbeam 4 and the instrument panel body 3. The front panel 2 is riveted and fixed to the frame 1. Specifically, self-piercing riveting is a cold forming process technology suitable for connecting lightweight materials, which is widely used in the automotive manufacturing field, especially in new energy vehicles and the lightweight design of body-in-white. When the frame 1 is assembled by welding, first weld the floor 11 and the rear panel 12, then weld them with the left side panel 13 and the right side panel 14, and finally weld the windshield crossbeam 15 and the roof panel 16 to form the overall load-bearing frame structure of the body-in-white assembly. In the state without the front panel 2, especially the A-pillars of the left side panel 13, the A-pillars of the right side panel 14, the windshield crossbeam 15, and the side sills on the left and right sides of the front part of the floor 11 are welded and fixed to form a complete frame structure, effectively ensuring the strength of the front part of the cab during a collision and enhancing the collision safety of the body-in-white assembly. The assembled stable frame 1 is separately electrocoated and painted. The front panel 2 is integrally die-cast, which is different from the traditional stamping and welding front panel 2 of heavy commercial vehicles. It has fewer parts and lighter weight, and is separately treated for anti-corrosion. It is not electrocoated and painted with the frame 1, reducing the body-in-white painting cost. The instrument panel body 3 and the instrument panel crossbeam 4 are separately assembled with the integrally die-cast front panel 2 on the interior subassembly line. This assembly method greatly improves the assembly efficiency. First, assemble the instrument panel crossbeam 4 to the front panel 2 through bolts, then assemble the instrument panel body 3 to the instrument panel crossbeam 4 and the front panel 2 through bolts. Finally, connect the front panel 2 assembled with the instrument panel to the frame 1 through multiple rivets 7 by self-piercing riveting to complete the assembly of the body-in-white assembly.

[0049] Further, continue to refer to Figures 1 - 5 , the front panel 2 includes a front panel body 21, a first crossbeam 22, and a second crossbeam 23. The first crossbeam 22 and the second crossbeam 23 are respectively arranged at the top and bottom of the front panel body 21, and a plurality of reinforcing ribs 5 are arranged on both the first crossbeam 22 and the second crossbeam 23. The first crossbeam 22, the second crossbeam 23, and the reinforcing ribs 5 are integrally formed with the front panel body 21 by a die-casting machine, eliminating the problem of stress concentration caused by traditional spot welding. The plurality of reinforcing ribs 5 are in a continuous structure, such as wavy, radial, X-shaped, etc., which can improve the local stiffness of the front panel 2, effectively inhibit the deformation of the front panel 2 under bumpy road conditions, and, during the frontal collision of the front panel 2, the reinforcing ribs 5 can guide the impact force to be diverted to the A-pillar and the sill beam, so that the collision force is dispersed and transmitted, further enhancing the collision safety of the body-in-white assembly and ensuring that the body-in-white assembly can pass the collision safety regulations.

[0050] Further, continue to refer toFigures 1 - 5 The front panel 2 further includes a plurality of bosses 24 and a fixing plate 25. The fixing plate 25 is disposed on the front panel body 21. The plurality of bosses 24 are all disposed on the first cross beam 22 and are used to fix the instrument panel cross beam 4 and the instrument panel body 3. The front panel body 21 is provided with a fixing plate 25 for fixing the exterior trim, pedal, windshield wiper, and suspension. There are four bosses 24 on the front panel body 21. The instrument panel is assembled with the first cross beam 22 of the front panel body 21 through the bosses 24. Preferably, a reinforcing rib 5 is provided at the lower part of the boss 24, which can improve the local stiffness of the first cross beam 22.

[0051] Furthermore, continue to refer to Figures 1 - 5 The body-in-white assembly further includes a connecting member 6. The front panel 2 is provided with a connecting hole. The connecting member 6 passes through the connecting hole and is fixedly connected to the skeleton 1. The number of the connecting members 6 is multiple. The front panel 2 is provided with a plurality of connecting holes. The plurality of connecting members 6 respectively pass through the corresponding connecting holes and are all fixedly connected to the skeleton 1. The connecting member 6 is set as a bolt. The front panel 2 assembled with the instrument panel is preliminarily connected to the skeleton 1 through the plurality of connecting members 6. Finally, the front panel 2 assembled with the instrument panel and the skeleton 1 are finally assembled through self-piercing riveting, with a stable structure and high stiffness.

[0052] Embodiment 2

[0053] This embodiment provides a method for assembling a body-in-white. As Figure 6 shown, through the implementation of the above body-in-white assembly, the method for assembling a body-in-white includes:

[0054] S100: Sequentially weld and connect the floor 11, the rear panel 12, the left side panel 13, the right side panel 14, the windshield cross beam 15, and the roof panel 16 to form the skeleton 1.

[0055] When the skeleton 1 is welded, first weld the floor 11 and the rear panel 12, then weld with the left side panel 13 and the right side panel 14, and finally weld the windshield cross beam 15 and the roof panel 16 to form the overall load-bearing frame structure of the body-in-white assembly. In the state without the front panel 2, especially the A-pillars of the left side panel 13, the A-pillars of the right side panel 14, the windshield cross beam 15, and the side upright beams on the left and right sides of the front part of the floor 11 are welded and fixed to form a complete frame structure, effectively ensuring the strength of the front part of the cab during a collision and enhancing the collision safety of the body-in-white assembly.

[0056] S110: Perform electrophoresis and painting treatment on the skeleton 1.

[0057] In the state without the front panel 2, a stable skeleton 1 can still be welded and formed, and electrophoresis and painting are performed on the skeleton 1 alone.

[0058] S120: Perform anti-corrosion treatment on the front panel 2.

[0059] The front panel 2 is integrally die-cast, different from the traditional front panel 2 of heavy commercial vehicles which is assembled by stamping parts. It has fewer parts and lighter weight. It is separately treated for anti-corrosion and does not undergo electrophoresis and painting with the frame 1, reducing the painting cost of the white body. Multiple reinforcing ribs 5 are provided on the integral front panel 2. During the frontal collision of the front panel 2, the reinforcing ribs 5 can guide the impact force to be diverted to the A-pillar and the sill beam, dispersing the collision force and further enhancing the collision safety of the white body assembly, ensuring that the white body assembly can pass the collision safety regulations.

[0060] S200: Install the instrument panel crossbeam 4 on the front panel 2 with bolts, and then install the instrument panel body 3 on the instrument panel crossbeam 4 and the front panel 2 with bolts to form the front panel assembly.

[0061] The instrument panel body 3 and the instrument panel crossbeam 4 are separately assembled with the integrally die-cast front panel 2 on the interior sub-assembly line. This assembly method greatly improves the assembly efficiency.

[0062] S210: Connect the front panel assembly to the frame 1 through the connector 6.

[0063] The connector 6 is set as a bolt. There are multiple connectors 6. The front panel 2 is provided with multiple connection holes. The multiple connectors 6 respectively pass through the corresponding connection holes and are fixedly connected to the frame 1. The front panel 2 with the assembled instrument panel is preliminarily connected to the frame 1 through the multiple connectors 6.

[0064] S300: Rivet and fix the front panel assembly to the frame 1.

[0065] The white body assembly assembly method provided in this embodiment, through the implementation of the white body assembly, sequentially forms the frame 1 by welding and connecting the floor 11, the rear panel 12, the left side panel 13, the right side panel 14, the windshield crossbeam 15 and the roof panel 16. Install the instrument panel crossbeam 4 on the front panel 2 with bolts, and then install the instrument panel body 3 on the instrument panel crossbeam 4 and the front panel 2 to form the front panel assembly, and rivet and fix the front panel assembly to the frame 1. The front panel 2 is integrally die-cast, different from the traditional front panel 2 of heavy commercial vehicles which is assembled by stamping parts. It has fewer parts and lighter weight. It is separately treated for anti-corrosion and does not undergo electrophoresis and painting with the frame 1, reducing the painting cost of the white body. In the state without the front panel 2, a complete frame structure is formed, effectively ensuring the strength of the front part of the cab during the collision and enhancing the collision safety of the white body assembly. The instrument panel body 3 and the instrument panel crossbeam 4 are separately assembled with the integrally die-cast front panel 2 on the interior sub-assembly line. This assembly method greatly improves the assembly efficiency.

[0066] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, rather than limitations on the implementation manners of the present invention. For those of ordinary skill in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present invention. It is not necessary and impossible to enumerate all implementation manners here. Any modifications, equivalent substitutions and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. A body-in-white assembly, characterized in that: include: A frame (1), the frame (1) comprising a floor (11), a rear enclosure (12), a left enclosure (13), a right enclosure (14), a windshield crossbeam (15), and a top cover (16) which are welded in sequence; A front enclosure assembly, the front enclosure assembly comprising a front enclosure (2), an instrument panel body (3) and an instrument panel cross beam (4); the front enclosure (2) is an integrally formed structure; the instrument panel cross beam (4) is mounted on the front enclosure (2); the instrument panel body (3) is mounted on the instrument panel cross beam (4) and the instrument panel body (3); the front enclosure (2) is fixed to the frame (1) by riveting.

2. The body-in-white assembly according to claim 1, characterized in that: The front enclosure (2) comprises a front enclosure body (21), a first cross beam (22) and a second cross beam (23), wherein the first cross beam (22) and the second cross beam (23) are respectively arranged at the top and the bottom of the front enclosure body (21), and a plurality of reinforcing ribs (5) are arranged on the first cross beam (22) and the second cross beam (23).

3. The body-in-white assembly according to claim 2, characterized in that: The front enclosure (2) further comprises a plurality of bosses (24), wherein the plurality of bosses (24) are all arranged on the first cross beam (22) and are used to fix the instrument panel cross beam (4) and the instrument panel body (3).

4. The body-in-white assembly according to claim 2, characterized in that: The front enclosure (2) further comprises a fixing plate (25), wherein the fixing plate (25) is arranged on the front enclosure body (21).

5. The body-in-white assembly according to claim 1, characterized in that: The body-in-white assembly also includes a connecting piece (6), the front enclosure (2) is provided with a connecting hole, and the connecting piece (6) passes through the connecting hole and is fixedly connected to the frame (1).

6. The body-in-white assembly according to claim 5, characterized in that: There are a plurality of connecting members (6), and the front enclosure (2) is provided with a plurality of connecting holes. The plurality of connecting members (6) respectively pass through the corresponding connecting holes and are fixedly connected to the frame (1).

7. A body-in-white assembly method, characterized in that: By implementing the body-in-white assembly as described in claims 1-6, the body-in-white assembly assembly method includes: S100: sequentially welding the floor (11), the rear enclosure (12), the left enclosure (13), the right enclosure (14), the windshield crossbeam (15), and the top cover (16) to form the frame (1); S200: installing the instrument panel cross beam (4) on the front enclosure (2) by means of bolts, and then installing the instrument panel body (3) on the instrument panel cross beam (4) and the front enclosure (2) by means of bolts to form the front enclosure assembly; S300: Riveting and fixing the front enclosure assembly to the frame (1).

8. The body-in-white assembly method according to claim 7, characterized in that: The body-in-white assembly further comprises a connecting member (6), the front enclosure (2) is provided with a connecting hole, the connecting member (6) passes through the connecting hole and is fixedly connected to the frame (1); The body-in-white assembly method further includes the following steps located between S200 and S300: S210: Connecting the front enclosure assembly to the frame (1) via the connecting member (6).

9. The body-in-white assembly method according to claim 7, characterized in that: The body-in-white assembly method further includes the following steps located between S100 and S200: S110: performing electrophoresis and spray painting on the skeleton (1).

10. The body-in-white assembly method according to claim 9, characterized in that: The body-in-white assembly method further includes, after S110: S120: performing anti-corrosion treatment on the front enclosure (2).

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