Rear cabin framework assembly

Abstract

The utility model provides a rear cabin framework assembly which comprises a left structure assembly and a right structure assembly, one of the left structure assembly and the right structure assembly comprises a first connecting piece and a second connecting piece, the first connecting piece is provided with a first connecting part and a second connecting part, and the second connecting part is connected with a cross beam; one end of the rear longitudinal beam is connected with the first connecting part; the second connecting piece is provided with a third connecting part and a fourth connecting part, and the third connecting part is connected with the cross beam; the third connecting piece is provided with a fifth connecting part and a sixth connecting part; one end of the doorsill beam is connected with the sixth connecting part; the lap joint beam is provided with a seventh connecting part, and the seventh connecting part is connected with the fourth connecting part and the fifth connecting part; the fourth connecting piece is connected to the top of the lap joint beam; and the C column is vertically arranged on the fourth connecting piece. The rear cabin framework solves the problems that in the prior art, a rear cabin framework of an electric automobile is high in cost and poor in using effect.

Description

Technical Field

[0001] The utility model relates to the technical field related to automobiles, and in particular to a rear cabin frame assembly. Background Art

[0002] At present, the rear cabin frame of electric vehicles is mainly made of welded steel plates. Due to the large space size and complex structure, the cost of stamping molds is relatively high, especially in the prototype trial production stage. The high cost investment has brought great cost pressure to the development of new models. In addition, due to the high density and easy corrosion of steel plates, the body is heavy and the use effect is poor, which further increases the manufacturing cost.

[0003] That is to say, the rear cabin frame of electric vehicles in the prior art has the problems of high cost and poor use effect. Utility Model Content

[0004] The main purpose of the utility model is to provide a rear cabin frame assembly to solve the problems of high cost and poor use effect of the rear cabin frame of electric vehicles in the prior art.

[0005] In order to achieve the above-mentioned purpose, the utility model provides a rear cabin skeleton assembly, which includes a left structure assembly and a right structure assembly that are symmetrically arranged, and the left structure assembly and the right structure assembly are connected by a cross beam, and one of the left structure assembly and the right structure assembly includes: a first connecting member, the first connecting member has a first connecting portion and a second connecting portion that are arranged at an angle, the first connecting portion and the second connecting portion are at different heights relative to the cross beam, and the second connecting portion is connected to the cross beam; a rear longitudinal beam, one end of the rear longitudinal beam is connected to the first connecting portion, and the other end of the rear longitudinal beam extends in a direction away from the cross beam; a second connecting member Connecting member, the second connecting member has a third connecting portion and a fourth connecting portion arranged at an angle, and the third connecting portion is connected to the cross beam; the third connecting member, the third connecting member has a fifth connecting portion and a sixth connecting portion arranged at an angle; a sill beam, one end of the sill beam is connected to the sixth connecting portion, and the other end of the sill beam extends in a direction away from the cross beam, and the extension direction of the sill beam is opposite to the extension direction of the rear longitudinal beam; the lap beam, the lap beam has a seventh connecting portion, and the seventh connecting portion is connected to the fourth connecting portion and the fifth connecting portion; the fourth connecting member, the fourth connecting member is connected to the top of the lap beam; the C-pillar, the C-pillar is erected on the fourth connecting member.

[0006] Furthermore, the first connecting member includes: a first joint, the first joint includes a vertical first substrate, the first connecting part and the second connecting part are located on both sides of the first substrate, the first joint has a first connecting part so that the first joint is connected to the cross beam; a second joint, the second joint is detachably connected to the first joint, and the second joint has a first connecting part so that the second joint is connected to the rear longitudinal beam.

[0007] Furthermore, the first joint also includes: a first lap joint, the first lap joint is fixedly connected to the first substrate; a second lap joint, the second lap joint is connected to a side of the first substrate away from the first lap joint, and the second lap joint and the first substrate form a second connection portion.

[0008] Furthermore, the first joint also has a first inner cavity, the first lap joint and the first substrate form the first inner cavity, and the first joint also includes a first reinforcing rib arranged in the first inner cavity, and two ends of the first reinforcing rib are respectively connected to the first lap joint and the first substrate.

[0009] Furthermore, the first joint further comprises a first supporting plate, and two ends of the first supporting plate are respectively connected to an end of the first substrate away from the second connecting portion and an end of the second bridging member away from the first substrate.

[0010] Further, the second joint includes: an upright second substrate, which is detachably connected to the first joint; an upright third joint piece, which is fixedly connected to the second substrate, and an extension direction of the third joint piece is perpendicular to an extension direction of the second substrate; and a fourth joint piece, which is fixedly connected to the second substrate, and the fourth joint piece is spaced apart from the third joint piece so that the third joint piece, the second substrate and the fourth joint piece form a first connection portion.

[0011] Furthermore, the fourth joint has a second inner cavity, and the second joint also includes a second reinforcing rib, and the second reinforcing rib is arranged in the second inner cavity.

[0012] Further, at least a portion of the third bridging member and the fourth bridging member are both plate-like structures, and two opposite side surfaces of the rear longitudinal beam are respectively connected to the two plate-like structures.

[0013] Furthermore, the rear longitudinal beam has an inner cavity opened along the extension direction of the rear longitudinal beam, and the rear longitudinal beam also includes at least one reinforcing beam, which is arranged in the inner cavity to divide the inner cavity into a plurality of sub-cavities of unequal shapes.

[0014] Furthermore, the second connecting member includes: an upright third substrate, one end of the third substrate is connected to the seventh connecting portion; a fifth lap joint, the fifth lap joint is fixedly connected to the middle of the third substrate, and the fifth lap joint is arranged at an angle to the third substrate; a sixth lap joint, the sixth lap joint is fixedly connected to the other end of the third substrate, the fifth lap joint and the sixth lap joint form a third connecting portion, and the third connecting portion and the second connecting portion can connect two adjacent side surfaces of the beam.

[0015] Furthermore, the second connecting member also includes a second supporting plate, one end of the second supporting plate is connected to an end of the third substrate away from the sixth bridging member, and the other end of the second supporting plate is connected to an end of the fifth bridging member away from the third substrate.

[0016] Furthermore, an angle between a side of the fifth connecting piece facing the sixth connecting piece and the third substrate is greater than 0 degrees and less than 90 degrees.

[0017] Furthermore, the extension directions of the fifth connecting member and the sixth connecting member are parallel.

[0018] Further, the third connecting member includes: a fourth upright substrate, one end of which is connected to the seventh connecting portion; a seventh lap joint, which is fixedly connected to the middle of the fourth substrate and is arranged at an angle to the fourth substrate; an eighth lap joint, which is connected to one end of the fourth substrate away from the seventh connecting portion, and the seventh lap joint and the eighth lap joint form a sixth connecting portion, so that one end of the sill beam is connected to the sixth connecting portion.

[0019] Furthermore, an angle between a side of the seventh connecting piece facing the eighth connecting piece and the fourth substrate is greater than 0 degrees and less than 90 degrees.

[0020] Furthermore, an extending direction of the seventh connecting member is parallel to an extending direction of the eighth connecting member.

[0021] Further, the lap beam includes: a first base, at least a portion of which extends in a horizontal plane; a first connecting position, which is upright on the first base, and has a seventh connecting portion so that the first connecting position is connected to the second connecting member and the third connecting member; a second connecting position, which is located at the top of the first connecting position, and the extension direction of the second connecting position is opposite to the extension direction of the first base, and the second connecting position is connected to the fourth connecting member; a third connecting position, which is connected to an end of the first connecting position away from the second connecting position, and the extension direction of the third connecting position is parallel to the extension direction of the second connecting position, and the third connecting position is connected to the fourth connecting member.

[0022] Furthermore, the second connection position has a supporting inner cavity, and the lap beam also includes at least one supporting rib, and the supporting rib is located in the supporting inner cavity.

[0023] Further, the fourth connecting member includes: a second base, at least a portion of the second base extends in a horizontal plane; a lap assembly, the lap assembly is fixedly connected to the top of the second base, the lap assembly has an opening, the opening is arranged away from the cross beam, and the lap assembly is connected to the C-pillar; a fourth connecting position, the fourth connecting position is connected to a side of the second base away from the lap assembly, and the fourth connecting position is detachably connected to the lap beam.

[0024] Furthermore, the second base body includes: a fifth substrate, the fifth substrate extends on a horizontal plane, the overlapping component is located on the fifth substrate; a supporting component, the supporting component is located on a side of the fifth substrate away from the overlapping component, and the fourth connecting position is connected to the supporting component.

[0025] Furthermore, the supporting assembly includes: a first vertical plate and a second vertical plate arranged in parallel and at intervals, the first vertical plate and the second vertical plate are arranged perpendicular to the fifth base plate; a reinforcing plate, the two ends of the reinforcing plate are respectively connected to the first vertical plate and the second vertical plate, and the reinforcing plate is arranged at an angle to the first vertical plate.

[0026] Furthermore, the first vertical plate is connected to the end of the fifth substrate, the second vertical plate is connected to the middle of the fifth substrate, and one end of the second vertical plate away from the fifth substrate is connected to the fourth connection position.

[0027] By applying the technical solution of the utility model, the rear cabin skeleton assembly includes a symmetrically arranged left structure assembly and a right structure assembly, the left structure assembly and the right structure assembly are connected by a cross beam, one of the left structure assembly and the right structure assembly includes a first connecting member, a rear longitudinal beam, a second connecting member, a third connecting member, a door sill beam, a lap beam, a fourth connecting member and a C-pillar, the first connecting member has a first connecting portion and a second connecting portion arranged at an angle, the first connecting portion and the second connecting portion are at different heights relative to the cross beam, and the second connecting portion is connected to the cross beam; one end of the rear longitudinal beam is connected to the first connecting portion, The other end of the rear longitudinal beam extends in a direction away from the cross beam; the second connecting member has a third connecting portion and a fourth connecting portion arranged at an angle, and the third connecting portion is connected to the cross beam; the third connecting member has a fifth connecting portion and a sixth connecting portion arranged at an angle; one end of the sill beam is connected to the sixth connecting portion, and the other end of the sill beam extends in a direction away from the cross beam, and the extension direction of the sill beam is opposite to the extension direction of the rear longitudinal beam; the lap beam has a seventh connecting portion, and the seventh connecting portion is connected to the fourth connecting portion and the fifth connecting portion; the fourth connecting member is connected to the top of the lap beam; and the C-pillar is erected on the fourth connecting member.

[0028] The first connecting part and the second connecting part of different heights are arranged on the first connecting member, so that they are connected to the rear longitudinal beam and the cross beam of different heights respectively. When the rear longitudinal beam and the cross beam are impacted by external force, the first connecting member absorbs and disperses the external force received to prevent distortion and deformation. The rear longitudinal beam and the cross beam have good connection strength, thereby ensuring the position stability of the rear longitudinal beam and the cross beam in the height direction and the horizontal direction. At the same time, the second connecting member and the third connecting member are used to connect the sill beam and the cross beam arranged at an angle to prevent the sill beam from twisting and deforming inward, and a lap beam is further arranged outside the second connecting member and the third connecting member to prevent the sill beam from twisting and deforming outward. In addition, the C-pillar is placed upright on the fourth connecting member and connected with the lap beam. Due to the excellent anti-twisting effect of the lap beam, the position stability of the C-pillar can be ensured and the C-pillar can be prevented from tipping over. The present application reduces the processing difficulty of the left structure assembly and the right structure assembly by setting a symmetrical left structure assembly and a right structure assembly connected by a cross beam, reduces the production cost, and ensures the stability of the overall structure of the rear cabin skeleton assembly, and has a good anti-twisting effect when subjected to external force. By arranging the first connecting member, rear longitudinal beam, second connecting member, third connecting member, door sill beam, lap beam, fourth connecting member and C-pillar which are independently produced and connected together, small molds can be used for separate production, thus reducing the manufacturing cost of the molds, reducing the difficulty of production and processing, and the rear cabin frame assembly can have a higher structural strength. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The drawings constituting part of the present application are used to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the drawings:

[0030] Figure 1 A schematic diagram showing an angle of a rear cabin frame assembly of an optional embodiment of the utility model is shown;

[0031] Figure 2 Shows Figure 1 A schematic structural diagram of the first joint in FIG.

[0032] Figure 3 Shows Figure 1 A schematic diagram of the structure of the second joint in FIG.

[0033] Figure 4 Shows Figure 1 A schematic diagram of the cooperation between the first connecting member and the rear longitudinal beam;

[0034] Figure 5 Shows Figure 1 A schematic structural diagram of the second connecting member in FIG.

[0035] Figure 6 Shows Figure 1A schematic structural diagram of the third connecting member in FIG.

[0036] Figure 7 Shows Figure 1 A schematic structural diagram of the fourth connecting member in FIG.

[0037] Figure 8 Shows Figure 1 Structural schematic diagram of the lap beam in FIG.

[0038] Fig. 9 Shows Figure 1 Schematic diagram of the connection between the cross beam, rear longitudinal beam and door sill beam;

[0039] Fig.10 Shows Figure 1 Schematic diagram of the connection between the crossbeam, rear longitudinal beam, door sill beam and C-pillar at an angle;

[0040] Fig.11 Shows Figure 1 Schematic diagram of the connection between the crossbeam, rear longitudinal beam, door sill beam and C-pillar at another angle.

[0041] The above drawings include the following reference numerals:

[0042] 10. Left structural assembly; 20. Right structural assembly; 30. Crossbeam; 40. First connecting member; 41. First joint; 411. First base plate; 412. First lap joint; 413. Second lap joint; 414. First reinforcing rib; 415. First support plate; 42. Second joint; 421. Second base plate; 422. Third lap joint; 423. Fourth lap joint; 424. Second reinforcing rib; 50. Second connecting member; 51. Third base plate; 52. Fifth lap joint; 53. Sixth lap joint; 54. Second support plate; 60. Third connecting member; 61. fourth base plate; 62. seventh lap joint; 63. eighth lap joint; 64. third support plate; 70. lap beam; 71. first base body; 72. first connection position; 73. second connection position; 74. third connection position; 75. support rib; 80. fourth connection member; 81. second base body; 811. fifth base plate; 812. support assembly; 813. first vertical plate; 814. second vertical plate; 815. reinforcement plate; 82. lap assembly; 83. fourth connection position; 91. rear longitudinal beam; 911. reinforcement beam; 92. door sill beam; 93. C-pillar. DETAILED DESCRIPTION

[0043] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0044] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0045] In the present invention, unless otherwise specified, the directional words used, such as "up, down, top, bottom", usually refer to the directions shown in the drawings, or to the components themselves in the vertical, perpendicular or gravity directions; similarly, for ease of understanding and description, "inside and outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directional words are not used to limit the present invention.

[0046] In order to solve the problems of high cost and poor use effect of the rear cabin frame of electric vehicles in the prior art, the utility model provides a rear cabin frame assembly.

[0047] like Figures 1 to 11 As shown, the rear cabin skeleton assembly includes a symmetrically arranged left structure assembly 10 and a right structure assembly 20, the left structure assembly 10 and the right structure assembly 20 are connected by a cross beam 30, and one of the left structure assembly 10 and the right structure assembly 20 includes a first connecting member 40, a rear longitudinal beam 91, a second connecting member 50, a third connecting member 60, a door sill beam 92, a lap beam 70, a fourth connecting member 80 and a C-pillar 93, the first connecting member 40 has a first connecting portion and a second connecting portion arranged at an angle, the first connecting portion and the second connecting portion are at different heights relative to the cross beam 30, and the second connecting portion is connected to the cross beam 30; one end of the rear longitudinal beam 91 is connected to the first connecting portion, and the rear longitudinal beam 91 is connected to the first connecting portion. The other end of the longitudinal beam 91 extends in a direction away from the cross beam 30; the second connecting member 50 has a third connecting portion and a fourth connecting portion arranged at an angle, and the third connecting portion is connected to the cross beam 30; the third connecting member 60 has a fifth connecting portion and a sixth connecting portion arranged at an angle; one end of the sill beam 92 is connected to the sixth connecting portion, and the other end of the sill beam 92 extends in a direction away from the cross beam 30, and the extension direction of the sill beam 92 is opposite to the extension direction of the rear longitudinal beam 91; the lap beam 70 has a seventh connecting portion, and the seventh connecting portion is connected to the fourth connecting portion and the fifth connecting portion; the fourth connecting member 80 is connected to the top of the lap beam 70; the C-pillar 93 is erected on the fourth connecting member 80.

[0048] The first connecting member 40 is provided with a first connecting part and a second connecting part of different heights, so that they are respectively connected to the rear longitudinal beam 91 and the cross beam 30 of different heights. When the rear longitudinal beam 91 and the cross beam 30 are impacted by external force, the first connecting member 40 absorbs and disperses the external force received to prevent distortion and deformation. The rear longitudinal beam 91 and the cross beam 30 have good connection strength, thereby ensuring the position stability of the rear longitudinal beam 91 and the cross beam 30 in the height direction and the horizontal direction. At the same time, the second connecting member 50 and the third connecting member 60 are used to connect the sill beam 92 and the cross beam 30 at an angle to prevent the sill beam 92 from being distorted inwardly. Further, a lap beam 70 is provided outside the second connecting member 50 and the third connecting member 60 to prevent the sill beam 92 from being distorted outwardly. In addition, the C-pillar 93 is placed upright on the fourth connecting member 80 and connected to the lap beam 70. Due to the excellent anti-distortion effect of the lap beam 70, the position stability of the C-pillar 93 can be ensured to prevent the C-pillar 93 from tipping over. The present application reduces the processing difficulty of the left structure assembly 10 and the right structure assembly 20 by setting a symmetrical left structure assembly 10 and a right structure assembly 20 connected by a cross beam 30, reduces the production cost, and at the same time ensures the stability of the overall structure of the rear cabin skeleton assembly, and has a good torsion resistance effect when subjected to external force. By setting the first connecting member 40, the rear longitudinal beam 91, the second connecting member 50, the third connecting member 60, the threshold beam 92, the lap beam 70, the fourth connecting member 80 and the C-pillar 93 that are independently produced and connected together, small molds can be used for separate production, reducing the manufacturing cost of the mold, and the production and processing difficulty is low, and the rear cabin skeleton assembly can have a higher structural strength.

[0049] like Figures 2 to 4 As shown, the first connector 40 includes a first joint 41 and a second joint 42. The first joint 41 includes a first upright substrate 411. The first connection portion and the second connection portion are located on both sides of the first substrate 411. The first joint 41 has a first connection portion so that the first joint 41 is connected to the cross beam 30. The second joint 42 is detachably connected to the first joint 41. The second joint 42 has a first connection portion so that the second joint 42 is connected to the rear longitudinal beam 91. The detachable connection of the first joint 41 and the second joint 42 is conducive to the processing and forming of the first joint 41 and the second joint 42 respectively. The first substrate 411 can separate the first connection portion and the second connection portion on both sides, and a certain height difference can be set to adapt to the cross beam 30 and the rear longitudinal beam 91 with different heights.

[0050] Optionally, the first joint 41 and the second joint 42 are installed together by fasteners, and the connection or disconnection of the first joint 41 and the second joint 42 is achieved by disassembling the first joint 41 and the second joint 42, with high installation accuracy, convenient operation and firm connection.

[0051] Optionally, mounting holes are provided on both the first joint 41 and the second joint 42 , and the mounting holes on the first joint 41 and the second joint 42 are aligned, and fasteners are passed through the mounting holes to achieve connection between the first joint 41 and the second joint 42 .

[0052] Optionally, the mounting hole is a screw hole, the fastener may be a screw, and the first joint 41 and the second joint 42 can be assembled and disassembled by removing the screw.

[0053] like Figure 2 As shown, the first joint 41 also includes a first bridging piece 412 and a second bridging piece 413. The first bridging piece 412 is fixedly connected to the first substrate 411; the second bridging piece 413 is connected to a side of the first substrate 411 away from the first bridging piece 412, and the second bridging piece 413 and the first substrate 411 form a second connection portion. The first bridging piece 412 and the second bridging piece 413 are respectively connected to the two sides of the first substrate 411, which is conducive to the first bridging piece 412 and the second bridging piece 413 being respectively connected to the second joint 42 and the crossbeam 30. Figure 2 As shown, the first joint 41 also has a first inner cavity, and the first lap joint 412 and the first substrate 411 form the first inner cavity. The first joint 41 also includes a first reinforcing rib 414 disposed in the first inner cavity, and the two ends of the first reinforcing rib 414 are respectively connected to the first lap joint 412 and the first substrate 411. The first inner cavity is formed by the first lap joint 412 and the first substrate 411, and is separated by the first reinforcing rib 414, so that the first joint 41 has a plurality of cavities with triangular cross-sections, thereby improving the anti-twisting performance of the first substrate 411 and the first lap joint 412.

[0054] like Figure 2 As shown, the first joint 41 further includes a first support plate 415, and two ends of the first support plate 415 are respectively connected to an end of the first substrate 411 away from the second connection portion and an end of the second bridging member 413 away from the first substrate 411. In other words, the first substrate 411, the second bridging member 413 and the first support plate 415 can form a side surface of a triangular prism to prevent deformation between the first substrate 411 and the second bridging member 413.

[0055] like Figure 3As shown, the second joint 42 includes a second upright substrate 421, a third upright bridging piece 422 and a fourth upright bridging piece 423, the second substrate 421 is detachably connected to the first joint 41; the third upright bridging piece 422 is fixedly connected to the second substrate 421, and the extension direction of the third upright bridging piece 422 is perpendicular to the extension direction of the second substrate 421; the fourth upright bridging piece 423 is fixedly connected to the second substrate 421, and the fourth upright bridging piece 423 is spaced apart from the third upright bridging piece 422, so that the third upright bridging piece 422, the second substrate 421 and the fourth upright bridging piece 423 form a first connecting portion. By connecting the first joint 41 with the second upright substrate 421, the misalignment and deformation between the first joint 41 and the second joint 42 can be avoided. The third upright bridging piece 422 and the fourth upright bridging piece 423 are spaced apart on the second substrate 421 to form a first connecting portion, so that the second joint 42 can be stably connected to the rear longitudinal beam 91 on the opposite sides of the rear longitudinal beam 91.

[0056] like Figure 3 As shown, the fourth lap joint 423 has a second inner cavity, and the second joint 42 further includes a second reinforcing rib 424, which is disposed in the second inner cavity. A plurality of cavities with triangular cross sections can be provided for the second joint 42, thereby improving the anti-twisting performance of the fourth lap joint 423 and further ensuring the stable connection between the second joint 42 and the rear longitudinal beam 91.

[0057] like Figure 4 As shown, at least a portion of the third bridging member 422 and the fourth bridging member 423 are both plate-like structures, and two opposite sides of the rear longitudinal beam 91 are respectively connected to the two plate-like structures. In other words, the two opposite plate-like structures clamp the rear longitudinal beam 91, thereby preventing the rear longitudinal beam 91 from tilting laterally. Figure 1 As shown, the rear longitudinal beam 91 has an inner cavity opened along the extension direction of the rear longitudinal beam 91, and the rear longitudinal beam 91 also includes at least one reinforcing beam 911, which is arranged in the inner cavity to divide the inner cavity into a plurality of sub-cavities of unequal shapes, and the cross-sectional shape of the sub-cavity can be a rectangular or triangular cavity, which can strengthen the strength of the rear longitudinal beam 91 and improve the stability of the rear cabin frame assembly.

[0058] like Figure 5As shown, the second connecting member 50 includes a third substrate 51, a fifth bridging member 52 and a sixth bridging member 53, one end of the third substrate 51 is connected to the seventh connecting portion, the fifth bridging member 52 is fixedly connected to the middle of the third substrate 51, and the fifth bridging member 52 is arranged at an angle to the third substrate 51; the sixth bridging member 53 is fixedly connected to the other end of the third substrate 51, and the fifth bridging member 52 and the sixth bridging member 53 form a third connecting portion, and the third connecting portion and the second connecting portion can connect two adjacent side surfaces of the beam 30. By arranging the fifth bridging member 52 and the sixth bridging member 53 on the third substrate 51, while connecting one side surface of the beam 30, the beam 30 is prevented from turning over, and the two adjacent side surfaces of the beam 30 are connected together in combination with the second connecting portion, and the beam 30 is further prevented from rotating and twisting.

[0059] like Figure 5 As shown, the second connecting member 50 further includes a second supporting plate 54, one end of the second supporting plate 54 is connected to one end of the third substrate 51 away from the sixth bridging member 53, and the other end of the second supporting plate 54 is connected to one end of the fifth bridging member 52 away from the third substrate 51. In other words, the second supporting plate 54, the third substrate 51 and the fifth bridging member 52 can form a side surface of a triangular prism, thereby improving the ability of the second connecting member to resist lateral distortion.

[0060] Specifically, the angle between the side of the fifth joint 52 facing the sixth joint 53 and the third substrate 51 is greater than 0 degrees and less than 90 degrees, so that the second support plate 54 is located on the side where the angle between the fifth joint 52 and the third substrate 51 is obtuse, thereby reducing the risk of the side where the angle between the fifth joint 52 and the third substrate 51 is obtuse due to impact deformation.

[0061] Specifically, the extension directions of the fifth lap joint 52 and the sixth lap joint 53 are parallel. When the cross beam 30 is installed, the sixth lap joint 53 can extend into the interior of the cross beam 30, the fifth lap joint 52 connects one side of the cross beam 30 from the outside, and the sixth lap joint 53 connects the other two adjacent side surfaces from the inside, further improving the connection stability of the cross beam 30.

[0062] Optionally, the second connecting member 50 , the first joint 41 and the beam 30 are all provided with mounting holes. The mounting holes of the second connecting member 50 , the first joint 41 and the beam 30 are aligned, and fasteners are passed through the mounting holes to achieve connection between the second connecting member 50 , the first joint 41 and the beam 30 .

[0063] Optionally, the mounting hole is a screw hole, and the fastener may be a screw, and the second connecting member 50, the first joint 41 and the crossbeam 30 can be disassembled and assembled by removing the screw.

[0064] like Figure 6As shown, the third connecting member 60 includes a fourth substrate 61, a seventh bridging member 62 and an eighth bridging member 63, one end of the fourth substrate 61 is connected to the seventh connecting portion; the seventh bridging member 62 is fixedly connected to the middle of the fourth substrate 61, and the seventh bridging member 62 and the fourth substrate 61 are arranged at an angle; the eighth bridging member 63 is connected to an end of the fourth substrate 61 away from the seventh connecting portion, and the seventh bridging member 62 and the eighth bridging member 63 form a sixth connecting portion, so that one end of the threshold beam 92 is connected to the sixth connecting portion. By arranging the seventh bridging member 62 and the eighth bridging member 63 to be connected to the fourth substrate 61 respectively, the threshold beam 92 is prevented from flipping over, and the relative position between the threshold beam 92 and the cross beam 30 is ensured to be stable.

[0065] Specifically, the angle between the seventh bridging member 62 and the fourth substrate 61 is greater than 0 degrees and less than 90 degrees. The third connecting member 60 also includes a third support plate 64, which is arranged on the side where the angle between the seventh bridging member 62 and the fourth substrate 61 is an obtuse angle, so as to reduce the risk of deformation caused by impact at this position.

[0066] Specifically, the extension direction of the seventh bridging member 62 is parallel to the extension direction of the eighth bridging member 63. This is beneficial for stably connecting the threshold beam 92. The eighth bridging member 63 can extend into the threshold beam 92 to compensate for the dimensional tolerance of the threshold beam 92.

[0067] like Figure 8 and Fig. 9 As shown, the lap beam 70 includes a first base 71, a first connection position 72, a second connection position 73 and a third connection position 74, at least a portion of the first base 71 extends on a horizontal plane; the first connection position 72 is vertically disposed on the first base 71, and the first connection position 72 has a seventh connection portion, so that the first connection position 72 is connected to the second connection member 50 and the third connection member 60; the second connection position 73 is located at the top of the first connection position 72, the extension direction of the second connection position 73 is opposite to the extension direction of the first base 71, and the second connection position 73 is connected to the fourth connection member 80; the third connection position 74 is connected to an end of the first connection position 72 away from the second connection position 73, the extension direction of the third connection position 74 is parallel to the extension direction of the second connection position 73, and the third connection position 74 is connected to the fourth connection member 80. By arranging the first connection position 72 to be vertically disposed on the first base 71 and connected to the second connection member 50 and the third connection member 60, the first base 71 can provide support on a horizontal plane. The second connection position 73 and the third connection position 74 are arranged on the other side of the first connection position 72 , so as to provide a stable connection for the fourth connection member 80 .

[0068] like Figure 8 and Fig. 9As shown, the second connection position 73 has a support inner cavity, and the lap beam 70 further includes at least one support rib 75, and the support rib 75 is located in the support inner cavity. The structural stability of the second connection position 73 is improved, and the support inner cavity is divided by the support rib 75 to form a plurality of cavities with triangular cross-sections, which effectively prevents the second connection position 73 from being deformed and ensures the stability of the connection with the second connector 50 and the third connector 60.

[0069] Optionally, both the lap beam 70 and the second connecting member 50 are provided with mounting holes, and the lap beam 70 is respectively connected to the third substrate 51 of the second connecting member 50 and the fourth substrate 61 of the third connecting member 60 through the first connecting position 72 .

[0070] Optionally, both the lap beam 70 and the cross beam 30 are provided with mounting holes, and the lap beam 70 is connected to the cross beam 30 via the first base 71 using fasteners.

[0071] Optionally, the mounting hole is a screw hole, and the fastener may be a screw, and the lap beam 70, the second connecting member 50 and the cross beam 30 can be assembled and disassembled by removing the screw.

[0072] like Fig.10 and Fig.11 As shown, the third connecting member 60, the lap beam 70 and the threshold beam 92 are all provided with mounting holes. The mounting holes of the third connecting member 60, the lap beam 70 and the threshold beam 92 are aligned, and the fasteners are passed through the mounting holes to achieve the connection between the third connecting member 60, the lap beam 70 and the threshold beam 92.

[0073] Specifically, mounting holes are correspondingly provided on one end of the fourth substrate 61 and the first connecting position 72 to achieve connection between the two using fasteners, and mounting holes are also provided on one end of the eighth bridging member 63 and the seventh bridging member 62, which are correspondingly connected to the side and internal mounting holes of the door sill beam 92.

[0074] Optionally, the mounting hole is a screw hole, and the fastener may be a screw, and the third connecting member 60, the lap beam 70 and the threshold beam 92 can be disassembled and assembled by removing the screw.

[0075] like Figure 7As shown, the fourth connecting member 80 includes a second base 81, a lap assembly 82 and a fourth connecting position 83, at least a portion of the second base 81 extends in a horizontal plane; the lap assembly 82 is fixedly connected to the top of the second base 81, the lap assembly 82 has an opening, the opening is arranged away from the cross beam 30, and the lap assembly 82 is connected to the C-pillar 93; the fourth connecting position 83 is connected to a side of the second base 81 away from the lap assembly 82, and the fourth connecting position 83 is detachably connected to the lap beam 70. The lap assembly 82 and the fourth connecting position 83 are separated into upper and lower sides by the second base 81, and the lap assembly 82 and the C-pillar 93 can be stably connected without affecting the structural stability of the fourth connecting position 83. The opening of the lap assembly 82 is arranged away from the cross beam 30, which is convenient for assembling the C-pillar 93 from the outside and will not affect the stability of the existing connection structure.

[0076] Optionally, the lap joint assembly 82 is surrounded by a plurality of plate-like structures, and at least a portion of the C-pillar 93 may extend into the lap joint assembly 82 to achieve stable installation.

[0077] like Figure 7 As shown, the second base 81 includes a fifth substrate 811 and a support assembly 812. The fifth substrate 811 extends on a horizontal plane, and the lap assembly 82 is located on the fifth substrate 811; the support assembly 812 is located on a side of the fifth substrate 811 away from the lap assembly 82, and the fourth connection position 83 is connected to the support assembly 812. The lap assembly 82 and the support assembly 812 are respectively arranged on both sides using the fifth substrate 811 on the horizontal plane, which will not hinder the connection with the C-pillar 93, and at the same time ensure the stable cooperation between the second base 81 and the lap beam 70.

[0078] like Figure 7 As shown, the support assembly 812 includes a first vertical plate 813, a second vertical plate 814 and a reinforcing plate 815 which are arranged in parallel and at intervals. The first vertical plate 813 and the second vertical plate 814 are arranged perpendicular to the fifth base plate 811. The two ends of the reinforcing plate 815 are respectively connected to the first vertical plate 813 and the second vertical plate 814, and the reinforcing plate 815 is arranged at an angle to the first vertical plate 813. The two ends of the reinforcing plate 815 are respectively connected to the first vertical plate 813 and the second vertical plate 814 for support, which is conducive to improving the structural stability of the support assembly 812.

[0079] like Fig.10 As shown, the first vertical plate 813 is connected to the end of the fifth substrate 811, the second vertical plate 814 is connected to the middle of the fifth substrate 811, and the end of the second vertical plate 814 away from the fifth substrate 811 is connected to the fourth connection position 83. The second vertical plate 814 is used to separate the fifth substrate 811 from the fourth connection position 83 in height, which can match the height difference between the second connection position 73 and the third connection position 74 on the lap beam 70 to ensure connection stability.

[0080] like Fig.11 As shown, the fourth connecting member 80, the lap beam 70 and the C-pillar 93 are all provided with mounting holes. The mounting holes of the fourth connecting member 80, the lap beam 70 and the C-pillar 93 are aligned, and the fasteners are passed through the mounting holes to achieve the connection between the fourth connecting member 80, the lap beam 70 and the C-pillar 93.

[0081] Specifically, when the fourth connecting member 80 is connected to the lap beam 70, the fifth substrate 811 is connected to the mounting hole on the second connecting position 73, and the fifth substrate 811 is located above the second connecting position 73. The fourth connecting position 83 is connected to the mounting hole on the third connecting position 74, and the fourth connecting position 83 is located above the third connecting position 74. At least a portion of the lap assembly 82 has a mounting hole to be fixed on the outside of the C-pillar 93.

[0082] Optionally, the mounting hole is a screw hole, and the fastener may be a screw, and the fourth connecting member 80, the lap beam 70 and the C-pillar 93 can be disassembled and assembled by removing the screw.

[0083] Optionally, the material of the left structural assembly 10 and the right structural assembly 20 includes Al-Mg-Si-Cu-Mn aluminum alloy. The Al-Mg-Si-Cu-Mn aluminum alloy contains Al, Mg, Si, Cu, and Mn, and the specific composition ratio of Al, Mg, Si, Cu, and Mn can be adaptively adjusted as needed. The Al-Mg-Si-Cu-Mn aluminum alloy material has high strength and good load-bearing capacity.

[0084] Preferably, the first joint 41, the second joint 42, the second connecting member 50, the third connecting member 60, the lap beam 70, and the fourth connecting member 80 are respectively integrally formed.

[0085] Optionally, the components in the left structural assembly 10 and the right structural assembly 20 are extruded separately. While ensuring production efficiency and production accuracy, the positions and connection relationships of the components are utilized to improve the bearing capacity of the left structural assembly 10 and the right structural assembly 20, and improve the overall stability of the rear cabin frame assembly.

[0086] Obviously, the embodiments described above are only some embodiments of the utility model, not all embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0087] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0088] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the numbers used in this way can be interchanged where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0089] The above description is only the preferred embodiment of the utility model, and is not intended to limit the utility model. For those skilled in the art, the utility model can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A rear cabin frame assembly, characterized in that: The rear cabin frame assembly comprises a symmetrically arranged left structure assembly (10) and a right structure assembly (20), wherein the left structure assembly (10) and the right structure assembly (20) are connected via a crossbeam (30), and one of the left structure assembly (10) and the right structure assembly (20) comprises: a first connecting member (40), the first connecting member (40) comprising a first connecting portion and a second connecting portion arranged at an angle, the first connecting portion and the second connecting portion being at different heights relative to the crossbeam (30), and the second connecting portion being connected to the crossbeam (30); a rear longitudinal beam (91), one end of the rear longitudinal beam (91) being connected to the first connecting portion, and the other end of the rear longitudinal beam (91) extending in a direction away from the cross beam (30); a second connecting member (50), the second connecting member (50) having a third connecting portion and a fourth connecting portion arranged at an angle, the third connecting portion being connected to the crossbeam (30); A third connecting member (60), wherein the third connecting member (60) has a fifth connecting portion and a sixth connecting portion disposed at an angle; a threshold beam (92), one end of the threshold beam (92) being connected to the sixth connection portion, the other end of the threshold beam (92) extending in a direction away from the cross beam (30), and the extending direction of the threshold beam (92) being opposite to the extending direction of the rear longitudinal beam (91); A lap beam (70), the lap beam (70) having a seventh connection portion, the seventh connection portion being connected to the fourth connection portion and the fifth connection portion; a fourth connecting member (80), the fourth connecting member (80) being connected to the top of the lap beam (70); A C-pillar (93), wherein the C-pillar (93) is vertically disposed on the fourth connecting member (80).

2. The rear cabin frame assembly according to claim 1, characterized in that: The first connecting member (40) comprises: a first joint (41), the first joint (41) comprising a first upright substrate (411), the first connecting portion and the second connecting portion being located on both sides of the first substrate (411), the first joint (41) having a first connecting portion so as to connect the first joint (41) to the crossbeam (30); A second joint (42), the second joint (42) is detachably connected to the first joint (41), and the second joint (42) has a first connecting portion so that the second joint (42) is connected to the rear longitudinal beam (91).

3. The rear cabin frame assembly according to claim 2, characterized in that: The first connector (41) further comprises: A first connecting piece (412), wherein the first connecting piece (412) is fixedly connected to the first substrate (411); A second connecting piece (413), wherein the second connecting piece (413) is connected to a side of the first substrate (411) away from the first connecting piece (412), and the second connecting piece (413) and the first substrate (411) form the second connecting portion.

4. The rear cabin frame assembly according to claim 3, characterized in that: The first joint (41) also has a first inner cavity, and the first lap joint (412) and the first substrate (411) form the first inner cavity. The first joint (41) also includes a first reinforcing rib (414) arranged in the first inner cavity, and the two ends of the first reinforcing rib (414) are respectively connected to the first lap joint (412) and the first substrate (411).

5. The rear cabin frame assembly according to claim 3, characterized in that: The first joint (41) further comprises a first supporting plate (415), two ends of which are respectively connected to an end of the first substrate (411) away from the second connecting portion and an end of the second connecting member (413) away from the first substrate (411).

6. The rear cabin frame assembly according to claim 2, characterized in that: The second connector (42) comprises: a second substrate (421) disposed upright, wherein the second substrate (421) is detachably connected to the first connector (41); A third vertically-mounted connecting piece (422), the third connecting piece (422) being fixedly connected to the second substrate (421), and the extending direction of the third connecting piece (422) being perpendicular to the extending direction of the second substrate (421); A fourth connecting piece (423), wherein the fourth connecting piece (423) is fixedly connected to the second substrate (421), and the fourth connecting piece (423) is spaced apart from the third connecting piece (422), so that the third connecting piece (422), the second substrate (421) and the fourth connecting piece (423) form the first connecting portion.

7. The rear cabin frame assembly according to claim 6, characterized in that: The fourth connecting piece (423) has a second inner cavity, and the second joint (42) further includes a second reinforcing rib (424), and the second reinforcing rib (424) is arranged in the second inner cavity.

8. The rear cabin frame assembly according to claim 6, characterized in that: At least a portion of the third bridging member (422) and the fourth bridging member (423) are both plate-like structures, and two opposite side surfaces of the rear longitudinal beam (91) are respectively connected to the two plate-like structures.

9. The rear cabin frame assembly according to any one of claims 1 to 8, characterized in that: The rear longitudinal beam (91) has an inner cavity opened along the extension direction of the rear longitudinal beam (91), and the rear longitudinal beam (91) also includes at least one reinforcing beam (911), and the reinforcing beam (911) is arranged in the inner cavity to divide the inner cavity into a plurality of sub-cavities of unequal shapes.

10. The rear cabin frame assembly according to any one of claims 1 to 8, characterized in that: The second connecting member (50) comprises: a third substrate (51) disposed upright, one end of the third substrate (51) being connected to the seventh connecting portion; A fifth connecting piece (52), the fifth connecting piece (52) being fixedly connected to the middle part of the third substrate (51), the fifth connecting piece (52) being arranged at an angle to the third substrate (51); A sixth bridging piece (53), the sixth bridging piece (53) is fixedly connected to the other end of the third substrate (51), the fifth bridging piece (52) and the sixth bridging piece (53) form the third connecting portion, and the third connecting portion and the second connecting portion can connect two adjacent side surfaces of the crossbeam (30).

11. The rear cabin frame assembly according to claim 10, characterized in that: The second connecting member (50) further comprises a second supporting plate (54), one end of the second supporting plate (54) being connected to an end of the third substrate (51) away from the sixth bridging member (53), and the other end of the second supporting plate (54) being connected to an end of the fifth bridging member (52) away from the third substrate (51).

12. The rear cabin frame assembly according to claim 10, characterized in that: The angle between the side of the fifth connecting piece (52) facing the sixth connecting piece (53) and the third substrate (51) is greater than 0 degrees and less than 90 degrees.

13. The rear cabin frame assembly according to claim 10, characterized in that: The extension directions of the fifth connecting piece (52) and the sixth connecting piece (53) are parallel.

14. The rear cabin frame assembly according to any one of claims 1 to 8, characterized in that: The third connecting member (60) comprises: a fourth substrate (61) disposed upright, one end of the fourth substrate (61) being connected to the seventh connecting portion; A seventh connecting piece (62), the seventh connecting piece (62) being fixedly connected to the middle portion of the fourth substrate (61), the seventh connecting piece (62) and the fourth substrate (61) being arranged at an angle; An eighth bridging piece (63), the eighth bridging piece (63) being connected to an end of the fourth base plate (61) away from the seventh connecting portion, the seventh bridging piece (62) and the eighth bridging piece (63) forming the sixth connecting portion, so that one end of the door sill beam (92) is connected to the sixth connecting portion.

15. The rear cabin frame assembly according to claim 14, characterized in that: The angle between the side of the seventh connecting piece (62) facing the eighth connecting piece (63) and the fourth substrate (61) is greater than 0 degrees and less than 90 degrees.

16. The rear cabin frame assembly according to claim 14, characterized in that: The extension direction of the seventh connecting piece (62) is parallel to the extension direction of the eighth connecting piece (63).

17. The rear cabin frame assembly according to any one of claims 1 to 8, characterized in that: The lap beam (70) comprises: A first substrate (71), at least a portion of which extends in a horizontal plane; A first connecting position (72), the first connecting position (72) being vertically disposed on the first base (71), the first connecting position (72) having the seventh connecting portion, so that the first connecting position (72) is connected to the second connecting member (50) and the third connecting member (60); a second connecting position (73), the second connecting position (73) being located on the top of the first connecting position (72), the extension direction of the second connecting position (73) being opposite to the extension direction of the first base (71), and the second connecting position (73) being connected to the fourth connecting member (80); A third connecting position (74), the third connecting position (74) is connected to an end of the first connecting position (72) away from the second connecting position (73), the extension direction of the third connecting position (74) is parallel to the extension direction of the second connecting position (73), and the third connecting position (74) is connected to the fourth connecting member (80).

18. The rear cabin frame assembly according to claim 17, characterized in that: The second connection position (73) has a supporting inner cavity, and the lap beam (70) further comprises at least one supporting rib (75), wherein the supporting rib (75) is located in the supporting inner cavity.

19. The rear cabin frame assembly according to any one of claims 1 to 8, characterized in that: The fourth connecting member (80) comprises: a second substrate (81), at least a portion of which extends in a horizontal plane; A lap joint component (82), the lap joint component (82) being fixedly connected to the top of the second base body (81), the lap joint component (82) having an opening, the opening being arranged away from the cross beam (30), and the lap joint component (82) being connected to the C-pillar (93); A fourth connection position (83), the fourth connection position (83) is connected to a side of the second base body (81) away from the lap joint assembly (82), and the fourth connection position (83) is detachably connected to the lap joint beam (70).

20. The rear cabin frame assembly according to claim 19, characterized in that: The second substrate (81) comprises: a fifth substrate (811), the fifth substrate (811) extending on the horizontal plane, the bridge assembly (82) being located on the fifth substrate (811); A supporting component (812), wherein the supporting component (812) is located on a side of the fifth substrate (811) away from the overlapping component (82), and the fourth connecting position (83) is connected to the supporting component (812).

21. The rear cabin frame assembly according to claim 20, characterized in that: The support assembly (812) comprises: A first vertical plate (813) and a second vertical plate (814) are arranged in parallel and at intervals, wherein the first vertical plate (813) and the second vertical plate (814) are arranged perpendicular to the fifth base plate (811); A reinforcing plate (815), wherein two ends of the reinforcing plate (815) are respectively connected to the first vertical plate (813) and the second vertical plate (814), and the reinforcing plate (815) is arranged at an angle to the first vertical plate (813).

22. The rear cabin frame assembly according to claim 21, characterized in that: The first vertical plate (813) is connected to the end of the fifth substrate (811), the second vertical plate (814) is connected to the middle of the fifth substrate (811), and one end of the second vertical plate (814) away from the fifth substrate (811) is connected to the fourth connecting position (83).

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