Connecting structure for vehicle cross beam, vehicle body assembly and bending device

Abstract

The invention relates to the technical field of vehicles, and discloses a connecting structure for a vehicle cross beam, a vehicle body assembly and a bending device. The connecting hole is formed in a cross beam, the connecting hole has a first extension length L1 in a first extension direction and a second extension length L2 in a second extension direction, the connecting piece is connected to a side wall of a vehicle, the connecting piece comprises a first section and a second section, and at least part of the first section penetrates through the connecting hole; the second section comprises a first side end and a second side end which are oppositely arranged, a second distance D2 between the first side end and the second side end in the second extending direction is equal to nL2, and the value range of n is 1.05-2, so that at least one of the first side end and the second side end of the second section extends out of the side edge of the connecting hole, and the first side end and the second side end of the second section extend out of the side edge of the connecting hole. Stable connection can be formed between the connecting hole and the connecting piece, and the cross beam is prevented from falling off from the side wall.

Description

Technical Field

[0001] This application relates to the field of automotive technology, and more particularly to a connection structure for vehicle crossbeams, a body assembly, and a bending device. Background Technology

[0002] This patent develops a pre-clamping bending device for automotive roofs to solve the problem of crossbeams falling off during the descent of a roller bed. This addresses the issue of frequent crossbeam falls affecting equipment uptime, particularly in factories operating on a high-speed, rhythmic production basis.

[0003] During vehicle manufacturing, the side panels and roofs of the vehicle are connected to the crossbeams using a pre-attached process. However, the vehicle body structure is usually transported using sleds and roller beds during manufacturing. Vibrations are easily generated during the descent of the roller bed, which can shake the front crossbeams out of the latches and cause them to fall off. This is especially problematic on fast-paced production lines, where frequent crossbeam falls can affect vehicle manufacturing efficiency. Summary of the Invention

[0004] To address the aforementioned problems in the prior art, this application provides a connection structure for vehicle crossbeams, a vehicle body assembly, and a bending device.

[0005] In a first aspect, embodiments of this application provide a connection structure for a vehicle crossbeam, including a connection hole and a connector; the connection hole is disposed on the crossbeam, and the connection hole has a first extension length L1 in a first extension direction and a second extension length L2 in a second extension direction, wherein the first extension direction and the second extension direction are perpendicular to each other. The connector is connected to the side panel of the vehicle. The connector includes a first section and a second section. One end of the first section is used to be directly or indirectly connected to the side panel assembly of the vehicle. The other end of the first section is provided with the second section. At least a portion of the first section passes through the connecting hole. The second section includes a first side end and a second side end that are disposed opposite to each other. The first side end and the second side end have a first distance D1 in the first extension direction and a second distance D2 in the second extension direction, where D1 < L1 and D2 = nL2, and the value of n ranges from 1.05 to 2.

[0006] Optionally, the projection of the direction P from the first side end to the second side end onto the plane G is the projection direction P'. The plane G is parallel to the first extension direction and the second extension direction. There is an angle β between the projection direction P' and the first extension direction, where 5º≤β≤90º.

[0007] Optionally, the first extension length L1 is 10-30mm, the second extension length L2 is 5-18mm, and the second distance D2 is 5.5-25mm.

[0008] Optionally, the connector is constructed as an integrally formed sheet structure; the first section has a first width W1, the second section has a second width W2, and the first width W1 is smaller than the second width W2.

[0009] Secondly, embodiments of this application provide a vehicle body assembly, the vehicle body assembly including a side panel and a crossbeam, characterized in that the side panel and the crossbeam are connected by a connection structure as described in the above technical solution.

[0010] Thirdly, embodiments of this application provide a bending device, including a base, a rotatable support arm on the base, and a driving component and a bending component on the support arm; The bending assembly includes a bending base and a clamping assembly. The bending base is rotatably connected to the support arm. The clamping assembly is provided on the bending base. The clamping assembly includes a clamping part. The driving assembly is used to drive the bending base to rotate relative to the support arm about a preset rotation axis M, so that the clamping part can rotate with the bending base relative to the support arm about the preset rotation axis M.

[0011] Optionally, the clamping part can switch between a clamping state and an open state, and the preset rotation axis M passes through the central region of the clamping part when it is in the clamping state.

[0012] Optionally, the clamping assembly includes two clamping arms, each clamping arm having a connecting portion, and the clamping arm being rotatably connected to the bending base via the connecting portion; The clamping part includes two clamping bodies, which are respectively connected to one end of the two clamping arms, and the other end of the clamping arms is connected to the clamping drive mechanism.

[0013] Optionally, one end of the clamping arm is provided with a connecting arm, the connecting arm extending at least along the preset rotation axis M, and the end of the connecting arm away from the clamping arm is provided with the clamping body.

[0014] Optionally, the support arm is provided with a connecting shaft, the bending base is connected to the connecting shaft, and the driving component is used to drive the bending base to rotate around the connecting shaft. The axis of the connecting shaft coincides with the preset rotation axis M.

[0015] This application provides a connection structure, body assembly, and bending device for a vehicle crossbeam, including a connection hole and a connector. The connection hole is disposed on the crossbeam and has a first extension length L1 in a first extension direction and a second extension length L2 in a second extension direction. The connector is connected to the side panel of the vehicle and includes a first section and a second section. One end of the first section is used to directly or indirectly connect to the side panel assembly of the vehicle, and the other end of the first section is provided with the second section. At least a portion of the first section passes through the connection hole. The second section includes a first side end and a second side end disposed opposite to each other. The first side end and the second side end have a first distance D1 in the first extension direction and a second distance D2 in the second extension direction, where D1 < L1 and D2 = nL2, and the value of n ranges from 1.05 to 2. Thus, at least one of the first side end and the second side end of the second section extends beyond the side of the connection hole, forming a stable connection between the connection hole and the connector, preventing the crossbeam from falling off the side panel. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the specific embodiments of this application or the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0017] Figure 1 The connection structure between the side panel and the crossbeam of an existing vehicle; Figure 2 This is an exemplary structural diagram of a connector without twisting or bending according to an embodiment of the present invention; Figure 3 This is a schematic diagram of the connection structure according to an embodiment of the present invention; Figure 4 A schematic diagram of a production line structure equipped with a bending device according to an embodiment of the present invention; Figure 5 This is a schematic diagram of the bending device according to an embodiment of the present invention; Figure 6 This is another structural schematic diagram of the bending device according to an embodiment of the present invention; Figure 7 This is a schematic diagram of the bending assembly according to an embodiment of the present invention; Figure 8 This is a partial structural schematic diagram of a bending assembly according to an embodiment of the present invention; Figure 9 This is a schematic diagram of the clamping part in a clamping state; Figure 10 This is a schematic diagram showing two positional states of the bending base according to an embodiment of the present invention.

[0018] Explanation of reference numerals in the attached figures: 11. Connecting hole; 12. Connector; 121. First section; 122. Second section; 123. First side end; 124. Second side end; 31. Base; 32. Support arm; 33. Bending base; 34. Clamping assembly; 35. Clamping part; 36. Drive assembly; 37. Clamping arm; 38. Connecting part; 39. Clamping body; 40. Clamping drive mechanism; 41. Connecting arm; 42. Connecting shaft; 43. Tilting drive mechanism; 44. Intermediate connector; 45. Rotating connector; 46. Mounting shaft; M, Preset rotation axis. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this disclosure clearer, the technical solutions of the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this disclosure, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0020] It should be noted that the terms "first," "second," etc., in the specification, claims, and drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence.

[0021] Various exemplary embodiments, features, and aspects of this disclosure will now be described in detail with reference to the accompanying drawings. The same reference numerals in the drawings denote elements that have the same or similar functions. Although various aspects of the embodiments are shown in the drawings, they are not necessarily drawn to scale unless specifically indicated otherwise.

[0022] The term “exemplary” as used herein means “serving as an example, embodiment, or illustration.” Any embodiment illustrated herein as “exemplary” is not necessarily to be construed as superior to or better than other embodiments.

[0023] In this disclosure, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent three cases: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in this disclosure, the terms "at least one" or "at least one" represent any combination of at least two of any one or more elements. For example, including at least one of A, B, and C can represent including any one or more elements selected from the set consisting of A, B, and C.

[0024] In the description of this disclosure, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the relative orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this disclosure 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. Since the embodiments disclosed in this disclosure can be arranged in different directions, these terms indicating direction are only for illustration and should not be regarded as limitations. For example, "upper" and "lower" are not necessarily limited to directions opposite to or consistent with the direction of gravity.

[0025] Furthermore, to better illustrate this disclosure, numerous specific details are set forth in the following detailed description. Those skilled in the art will understand that this disclosure can be practiced without certain specific details.

[0026] like Figure 2-3 As shown, this disclosure provides a connection structure for a vehicle crossbeam. This connection structure serves as a pre-overlap connection structure for the crossbeam, and is used for the pre-overlap connection between the vehicle's side panel, such as the side panel roof, and the crossbeam. Specifically, during the vehicle production process, the side panel roof and the crossbeam can be pre-overlapped, and the side panel roof and the crossbeam can be pre-overlapped and connected through this connection structure.

[0027] The connection structure includes a connection hole 11 and a connector 12. The connection hole 11 is disposed on the crossbeam. The connection hole 11 has a first extension length L1 in a first extension direction and a second extension length L2 in a second extension direction. The first extension direction and the second extension direction are perpendicular to each other.

[0028] Optionally, the connecting hole 11 can be configured as a rectangular hole, an elliptical hole, or an oblong hole.

[0029] The first extending direction can be the length extending direction of the connecting hole 11, and the second extending direction can be the width extending direction of the connecting hole 11. For example, the connecting hole 11 is a rectangular hole, the first extending direction is the long side extending direction of the rectangular hole, and the second extending direction is the short side extending direction of the rectangular hole.

[0030] The connector 12 is connected to the side panel of the vehicle. The connector 12 can be constructed as a single, integrally formed sheet structure. The connector 12 includes a first section 121 and a second section 122. One end of the first section 121 is used for direct or indirect connection to the side panel assembly of the vehicle, and the other end of the first section 121 is provided with the second section 122. At least a portion of the first section 121 passes through the connecting hole 11. Specifically, during the vehicle body manufacturing process, the vehicle crossbeam is pre-mounted on the vehicle side panel, for example, on the top cover of the vehicle side panel. During this mounting process, the connector 12 connecting the side panel passes through the connecting hole 11 provided on the crossbeam. At least a portion of the first section 121 of the connector 12 passes through the connecting hole 11, and the second section 122 of the connector 12 passes through the connecting hole 11 and extends from one side of the connecting hole 11 to the other side. Afterward, the connector 12 undergoes the expected deformation under external force to prevent it from detaching from the connecting hole 11. Figure 1 As shown, in existing vehicle body processing, when the connector 12 passes through the connecting hole 11, its length extension direction is generally perpendicular to the plane where the connecting hole 11 is located. Then, under the action of external force, the connector 12 tilts to one of its two sides to extend beyond the connecting hole 11 on the plane where the connecting hole 11 is located. For example, the connector 12 can be bent inward or outward so that the connector 12 overlaps with the plate with the connecting hole 11, preventing the connector 12 from coming out of the connecting hole 11. However, the connection stability of this connection method is poor, and the connector 12 is easy to come out of the connecting hole under the action of external vibration, causing the crossbeam to fall off.

[0031] Optionally, the connector 12 can be directly or indirectly connected to the top cover of the side enclosure. For example, the top cover of the side enclosure includes a side beam on which the connector 12 is provided. For example, the connector 12 is provided on the side beam, or the side beam is provided with a crossbeam connecting plate on which the connector 12 is provided.

[0032] like Figure 2-3As shown, in this embodiment, the second section 122 includes a first side end 123 and a second side end 124 disposed opposite to each other. The connector 12 is made of a plastic material, thereby enabling the connector 12 to undergo plastic deformation, specifically, it can be twisted and bent so that the projection direction of the direction from the first side end 123 to the second side end 124 in the plane where the connecting hole 11 is located rotates by a preset angle, which can be 5º-90º. Specifically, after the crossbeam is attached to the vehicle side panel, the connector 12 passes through the connecting hole 11. Before twisting the connector 12, the projection direction is defined as a first direction. After twisting the connector 12, the projection direction rotates to a second direction. The angle between the second direction and the first direction is 5º-90º, preferably 20º-80º, thereby causing at least one of the first side end 123 and the second side end 124 to extend its projection area or projection point in the plane where the connecting hole 11 is located beyond the side of the connecting hole 11.

[0033] For the torsion connector 12, which is in a bent state, there is a first distance D1 in the first extension direction and a second distance D2 in the second extension direction between its first side end 123 and its second side end 124, where D1 < L1 and D2 = nL2, and the value of n ranges from 1.05 to 2, preferably from 1.1 to 1.9, for example, n can be 1.2, 1.3, 1.4, 1.5, 1.6, 1.7 or 1.8. Thus, at least one of the first side end 123 and the second side end 124 extends beyond the side of the connecting hole 11, forming a stable connection between the connecting hole 11 and the connector 12, preventing the crossbeam from falling off the side wall.

[0034] Optionally, the second segment 122 includes a side connecting segment located between the first side end 123 and the second side end 124, the side connecting segment being connected to the other end of the first segment 121. Optionally, the distance between the first side end 123 and the side connecting segment is the same as the distance between the second side end 124 and the side connecting segment.

[0035] In an optional embodiment, the projection of the direction P from the first side end 123 to the second side end 124 onto the plane G is the projection direction P'. The plane G is parallel to both the first and second extending directions. For example, without considering the depth of the connecting hole 11, the plane containing the connecting hole 11 can be used as the plane G. The projection direction P' is the orthographic projection of the direction P onto the plane G, and there is an angle β between the projection direction P' and the first extending direction, where 5º≤β≤90º. The first and second extending directions are not vector directions extending in a single direction. The angle β between the projection direction P' and the first extending direction can be the smaller of the two angles between the projection direction P' and the line containing the first extending direction, or a 90º angle.

[0036] Preferably, 15º≤β≤85º, for example, β is 20º, 30º, 40º, 45º, 50º, 60º, 70º or 80º.

[0037] Specifically, for the connector 12 that has not been twisted or bent, the projection of the initial direction P0 from its first side end 123 to its second side end 124 into the plane G is the initial projection direction P0'. The initial projection direction P0' can be set to be basically parallel to the aforementioned direction. After the connector 12 is twisted and bent, the direction from its first side end 123 to its second side end 124 is switched to the aforementioned direction P.

[0038] Optionally, the first extension length L1 is 1.2-5 times the second extension length L2, preferably 1.3-4 times, for example 1.5 times, 1.8 times, 2 times, 2.2 times, 2.5 times, 3 times or 3.5 times.

[0039] The first extension length L1 is 10-30mm, preferably 12-26mm, such as 15mm, 18mm, 20mm, 22mm or 25mm.

[0040] Optionally, the second extension length L2 is 5-18 mm, preferably 7-16 mm, such as 10 mm, 12 mm or 15 mm.

[0041] Optionally, the second distance D2 is 5.5-25mm, preferably 7-22mm, for example 8mm, 10mm, 12mm, 15mm, 16mm, 18mm, 20mm or 22mm.

[0042] Optionally, D2 = L2 + ΔL, where ΔL is 0.5-15mm, preferably 2-12mm, for example, 4mm, 6mm, 8mm or 10mm.

[0043] Optionally, the connector 12 is constructed as an integrally formed sheet structure, and the thickness of the connector 12 is 0.5-1.8 mm, preferably 0.8-1.5 mm, for example 1 mm or 1.2 mm. The first segment 121 has a first width W1, and the second segment 122 has a second width W2, wherein the first width W1 is smaller than the second width W2.

[0044] Optionally, the second width W2 is 8-28mm, for example, 12mm, 15mm, 20mm, 22mm or 25mm.

[0045] Optionally, the second width W2 is 1.05-2.5 times the first width W1, preferably 1.1-2 times, such as 1.15 times, 1.2 times, 1.25 times, 1.3 times, 1.4 times, 1.5 times or 1.8 times.

[0046] The connector 12 undergoes plastic deformation after being twisted and bent. The second width W2 can be the distance between the first side end 123 and the second side end 124, that is, the actual distance between the two in space. The component or projection of this distance in the first extension direction constitutes the first distance D1, and the component or projection of this distance in the second extension direction constitutes the second distance D2.

[0047] This disclosure also provides a vehicle body assembly, which includes a side panel and a crossbeam, and the side panel and the crossbeam are connected by a connection structure as described in the above technical solutions.

[0048] Specifically, the side panel, especially the top cover of the side panel, is directly or indirectly connected to the connector 12, and the crossbeam is provided with the connection hole 11. The crossbeam is connected to the side panel through the cooperation of the connector 12 and the connection hole 11, thereby being fixedly set relative to the side panel.

[0049] Optionally, the two ends of the crossbeam are respectively provided with the connecting holes 11, and the left and right side panels of the vehicle are respectively provided with the connecting parts 12. Thus, the two ends of the crossbeam are respectively fixedly connected to the side panels through the connecting structure. Specifically, after the crossbeam is erected on the side panel, the connecting parts 12 are inserted into the connecting holes 11, and then the connecting parts 12 are twisted and bent to form the bent state as described in the above technical solution.

[0050] like Figure 4-10 As shown, this embodiment of the present disclosure also provides a bending device for bending a connector 12 connected to the side panel of a vehicle. Specifically, the connector 12 is twisted to bend it, thereby switching the connector 12 to the desired bending state and obtaining the connection structure as described in the above technical solution.

[0051] The bending device includes a base 31, which can be fixedly connected to the vehicle production line. The base 31 is equipped with a tilting drive mechanism 43 and a rotatable support arm 32. The tilting drive mechanism 43 controls the support arm 32 to tilt, allowing it to rotate to either a working position or a non-working position. The support arm 32 can tilt about an axis parallel to the direction of travel of the vehicle body at the corresponding production line position of the bending device.

[0052] Optionally, the tilting drive mechanism 43 can be configured as a cylinder assembly or a hydraulic cylinder assembly.

[0053] The support arm 32 is provided with a drive assembly 36 and a bending assembly. The bending assembly includes a bending base 33 and a clamping assembly 34. The bending base 33 is rotatably connected to the support arm 32. The bending base 33 is provided with the clamping assembly 34, which includes a clamping part 35 for clamping the connector 12 disposed on the side panel of the vehicle. The drive assembly 36 is used to drive the bending base 33 to rotate relative to the support arm 32 around a preset rotation axis M. The bending base 33 can rotate to one of a first preset position G1 and a second preset position G2, so that the clamping part 35 can rotate with the bending base 33 relative to the support arm 32 around the preset rotation axis M. Thus, the clamping part 35 drives the connector 12 it clamps to rotate around the preset rotation axis M, so that the connector 12 is torsional deformed, thereby torturing the connector 12 to the desired bending state.

[0054] Optionally, the clamping part 35 can switch between a clamping state and an open state. Specifically, after the crossbeam is erected on the side wall, the connector 12 on the side wall passes through the connecting hole 11. Then, the flipping drive mechanism 43 controls the support arm 32 to flip to the working position, and the clamping part 35 switches from the open state to the clamping state. In the clamping state, the clamping part 35 clamps the connector 12, so that the clamping part 35 can drive the connector 12 to rotate, causing the connector 12 to deform and be twisted to the desired bending state. Then, the clamping part 35 switches from the clamping state to the open state.

[0055] The preset rotation axis M passes through the central region of the clamping part 35 in the clamping state, thereby causing the clamping part 35 to rotate around the preset rotation axis M. Specifically, the connector 12 includes a connecting end and a free end disposed opposite to each other. The connecting end is used to connect to the side panel of the vehicle. The connector 12 includes a first segment 121 and a second segment 122 arranged sequentially along the direction from the connecting end to the free end. At least a portion of the width of the second segment 122 is greater than the width of the first segment 121. The direction parallel to or overlapping with the direction from the connecting end to the free end is taken as the length direction of the connector 12. The width direction of the connector 12 is perpendicular to its thickness direction and the length direction. The connector 12 includes a center line that passes approximately through its center in the width direction and extends along its length direction. In a preferred embodiment, during the side panel's transport and positioning process, the side panel is positioned such that when the clamping part 35 switches from the open state to the clamping state and clamps the connector 12, the distance between the center line and the preset rotation axis M is less than or equal to a preset distance threshold. The preset distance threshold is 0.01-4 mm, preferably 0.01-3 mm, for example, 0.05 mm, 0.1 mm, 0.2 mm, 0.5 mm, 0.8 mm, 1 mm, 1.2 mm, 1.5 mm, 2 mm, or 2.5 mm. Preferably, the center line substantially coincides with the preset rotation axis M, thereby allowing the connector to bend substantially around the center line.

[0056] Optionally, the clamping assembly 34 includes two clamping arms 37, each clamping arm 37 having a connecting portion 38. The clamping arms 37 are rotatably connected to the bending base 33 via the connecting portion 38. Preferably, the connecting portions 38 of the two clamping arms 37 are coaxially mounted to the bending base 33, and the two clamping arms 37 are rotatable about the same rotation axis. For example, the two clamping arms 37 can be connected to the same mounting shaft 46 disposed on the bending base 33, and can rotate about the mounting shaft 46 respectively.

[0057] The clamping part 35 includes two clamping bodies 39, which are used to apply a clamping action to the connecting body. The two clamping bodies 39 are respectively connected to one end of the two clamping arms 37. Each clamping arm 37 can drive one clamping body 39 to move. The other end of the clamping arm 37 is directly or indirectly connected to the clamping drive mechanism 40. The clamping drive mechanism 40 is used to drive the clamping arm 37 to rotate, so that the clamping assembly 34 can switch to one of the open state and the clamping state by the rotation of the clamping arm 37.

[0058] Optionally, the clamping drive mechanism 40 is configured as a pneumatic cylinder or a hydraulic cylinder. The clamping drive mechanism 40 is fixedly connected to the bending base 33, and the bending base 33 can drive the clamping drive mechanism 40 and the clamping assembly 34 to move synchronously. The clamping drive mechanism 40 includes an output shaft capable of reciprocating movement. The output shaft is rotatably connected to two intermediate connecting members 44. The intermediate connecting members 44 can be configured as connecting rods. One end of each of the two intermediate connecting members 44 is connected to the output shaft, and the other end of each of the two intermediate connecting members 44 is connected to the other end of each of the two clamping arms 37. Thus, by extending or retracting the output shaft of the clamping drive mechanism 40, the two intermediate connecting members 44 are driven to move forward or backward and rotate simultaneously. The two intermediate connecting members 44 respectively drive the two clamping arms 37 to rotate, so that the two clamping arms 37 rotate around their rotation axis.

[0059] Optionally, the intermediate connector 44 is configured as a connecting rod.

[0060] In an optional embodiment, one end of the clamping arm 37 is provided with a connecting arm 41, which extends at least along the preset rotation axis M, and the end of the connecting arm 41 away from the clamping arm 37 is provided with the clamping body 39. Thus, by positioning the clamping portion 35 including the clamping body 39 and the clamping arm 37 at different positions along the preset rotation axis M, it is possible to facilitate the rotation of components such as the bending base 33, the clamping arm 37, and the clamping drive mechanism 40 around the preset rotation axis M without contacting the vehicle body components.

[0061] In an optional embodiment, the support arm 32 is provided with a connecting shaft 42, the bending base 33 is connected to the connecting shaft 42, and the driving component 36 is used to drive the bending base 33 to rotate around the connecting shaft 42, wherein the axis of the connecting shaft 42 coincides with the preset rotation axis M.

[0062] Optionally, the bending base 33 and the connecting shaft 42 are rotatably connected, or the bending base 33 and the connecting shaft 42 are fixedly connected, and the connecting shaft 42 is rotatably connected to the support arm 32.

[0063] Optionally, the drive assembly 36 can be a pneumatic cylinder or a hydraulic cylinder. The output shaft of the drive assembly 36 is directly or indirectly connected to the bending base 33. For example, the output shaft is connected to a rotating connector 45 connected to the preset rotation axis M. The rotating connector 45 can rotate around the preset rotation axis M. The rotating connector 45 and the bending base 33 are fixedly arranged relative to each other and are directly or indirectly connected. The output shaft can drive the rotating connector 45 to rotate around the preset rotation axis M, thereby driving the bending base 33 to rotate around the preset rotation axis M.

[0064] The above description is merely an embodiment of this application and is not intended to limit the scope of this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.

[0065] Although embodiments of this application have been described in conjunction with the accompanying drawings, those skilled in the art can make various modifications and variations without departing from the spirit and scope of this application, and such modifications and variations all fall within the scope defined by the appended claims.

Claims

1. A connection structure for a vehicle crossbeam, characterized in that, It includes a connecting hole (11) and a connector (12); the connecting hole (11) is provided on the crossbeam, and the connecting hole (11) has a first extension length L1 in a first extension direction and a second extension length L2 in a second extension direction; The connector (12) is connected to the side panel of the vehicle. The connector (12) includes a first section (121) and a second section (122). One end of the first section (121) is used to be directly or indirectly connected to the side panel assembly of the vehicle. The other end of the first section (121) is provided with the second section (122). At least a portion of the first section (121) passes through the connecting hole (11). The second section (122) includes a first side end (123) and a second side end (124) disposed opposite to each other. The first side end (123) and the second side end (124) have a first distance D1 in the first extension direction and a second distance D2 in the second extension direction, where D1 < L1 and D2 = nL2, and the value of n ranges from 1.05 to 2.

2. The connection structure according to claim 1, characterized in that, The projection of the direction P from the first side end (123) to the second side end (124) onto the plane G is the projection direction P'. The plane G is parallel to the first extension direction and the second extension direction. There is an angle β between the projection direction P' and the first extension direction, where 5º≤β≤90º.

3. The connection structure according to claim 1, characterized in that, The first extension length L1 is 10-30mm, the second extension length L2 is 5-18mm, and the second distance D2 is 5.5-25mm.

4. The connection structure according to any one of claims 1 to 3, characterized in that, The connector (12) is constructed as an integrally formed sheet structure; the first section (121) has a first width W1, the second section (122) has a second width W2, and the first width W1 is smaller than the second width W2.

5. A vehicle body assembly, the vehicle body assembly comprising side panels and crossbeams, characterized in that, The side panel and the crossbeam are connected by a connection structure as described in any one of claims 1-4.

6. A bending device, characterized in that, Includes a base (31), on which a rotatable support arm (32) is provided, and on which a drive assembly (36) and a bending assembly are provided; The bending assembly includes a bending base (33) and a clamping assembly (34). The bending base (33) is rotatably connected to the support arm (32). The clamping assembly (34) is provided on the bending base (33). The clamping assembly (34) includes a clamping part (35). The driving assembly (36) is used to drive the bending base (33) to rotate relative to the support arm (32) around a preset rotation axis M, so that the clamping part (35) can rotate with the bending base (33) relative to the support arm (32) around the preset rotation axis M.

7. The bending device according to claim 6, characterized in that, The clamping part (35) can switch between a clamping state and an open state, and the preset rotation axis M passes through the central region of the clamping part (35) when it is in the clamping state.

8. The bending device according to claim 6, characterized in that, The clamping assembly (34) includes two clamping arms (37), each clamping arm (37) having a connecting part (38), and the clamping arm (37) being rotatably connected to the bending base (33) via the connecting part (38). The clamping part (35) includes two clamping bodies (39), which are respectively connected to one end of the two clamping arms (37), and the other end of the clamping arms (37) is connected to the clamping drive mechanism (40).

9. The bending device according to claim 8, characterized in that, One end of the clamping arm (37) is provided with a connecting arm (41), the connecting arm (41) extends at least along the preset rotation axis M, and the end of the connecting arm (41) away from the clamping arm (37) is provided with the clamping body (39).

10. The bending device according to claim 6, characterized in that, The support arm (32) is provided with a connecting shaft (42), the bending base (33) is connected to the connecting shaft (42), and the driving component (36) is used to drive the bending base (33) to rotate around the connecting shaft (42). The axis of the connecting shaft (42) coincides with the preset rotation axis M.

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