CN223590830U - Structure for connecting rear section of longitudinal beam with lower cross beam of rear floor - Google Patents
Structure for connecting rear section of longitudinal beam with lower cross beam of rear floorInfo
- Publication number
- CN223590830U CN223590830U CN202423276224.3U CN202423276224U CN223590830U CN 223590830 U CN223590830 U CN 223590830U CN 202423276224 U CN202423276224 U CN 202423276224U CN 223590830 U CN223590830 U CN 223590830U
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- Prior art keywords
- longitudinal beam
- plate
- rear section
- reinforcing
- connecting plate
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Abstract
The utility model discloses a connection structure of a rear section of a longitudinal beam and a lower cross beam of a rear floor, which comprises a rear section body of the longitudinal beam, a lower cross beam body and a longitudinal beam reinforcing member, wherein the longitudinal beam reinforcing member is arranged on the rear section body of the longitudinal beam, the longitudinal beam reinforcing member and the rear section body of the longitudinal beam form a cavity, and the lower cross beam body is connected with the longitudinal beam reinforcing member; the utility model provides a connection structure of a rear section of a longitudinal beam and a lower cross beam of a rear floor, wherein a longitudinal beam reinforcing member is arranged on a rear section body of the longitudinal beam so that the rear section body of the longitudinal beam forms a space cavity structure, and the lower cross beam body is connected to the longitudinal beam reinforcing member instead of being directly connected to the longitudinal beam, so that after the auxiliary frame is installed, the auxiliary frame is transmitted to the lower cross beam of the rear floor after being weakened through a cavity formed by the longitudinal beam reinforcing member and the rear section body of the longitudinal beam in the excitation transmission process, the structural rigidity is improved, the cavity structure also effectively absorbs energy and reduces vibration, the excitation transmitted to the side of a vehicle body is effectively reduced, and the riding comfort of a passenger cabin is improved.
Description
Technical Field
The utility model belongs to the technical field of vehicle body structures, and relates to a connection structure of a rear section of a longitudinal beam and a lower cross beam of a rear floor.
Background
The rear auxiliary frame is an important part in an automobile chassis system, is connected with an automobile body and a suspension system, bears and transmits forces and moments generated by running of the automobile under various working conditions, reduces the input of road vibration, and improves riding comfort. The rear auxiliary frame is connected with the vehicle body through a plurality of mounting points, wherein the connecting position of the rear section of the longitudinal beam and the lower cross beam of the rear floor is one of the common mounting points of the rear auxiliary frame.
As the common mounting point of back sub vehicle frame, the structural rigidity of longeron rear segment and rear floor underbeam's hookup location is crucial, if here structural rigidity is low, then is difficult to the installation demand to can directly influence the vibration transmission of sub vehicle frame, and then influence the driving travelling comfort in passenger cabin.
In order to solve the above problems, a connecting structure is needed, which can effectively improve the structural rigidity of the connecting position, effectively reduce the excitation transmitted to the vehicle body side and improve the riding comfort of the passenger cabin.
Disclosure of utility model
In view of the above, the utility model provides a connection structure of a rear section of a longitudinal beam and a lower cross beam of a rear floor, wherein a longitudinal beam reinforcing member is arranged on a rear section body of the longitudinal beam so that the rear section body of the longitudinal beam forms a space cavity structure, and the lower cross beam body is connected to the longitudinal beam reinforcing member instead of being directly connected to the longitudinal beam, so that after the auxiliary frame is installed, in the excitation transmission process, the auxiliary frame is transmitted to the lower cross beam of the rear floor after being weakened through a cavity formed by the longitudinal beam reinforcing member and the rear section body of the longitudinal beam, the structural rigidity is improved, the cavity structure also effectively absorbs energy and reduces vibration, the excitation transmitted to the side of a vehicle body is effectively reduced, and the riding comfort of a passenger cabin is improved.
The utility model relates to a connection structure of a rear section of a longitudinal beam and a lower cross beam of a rear floor, which comprises a rear section body of the longitudinal beam, a lower cross beam body and a longitudinal beam reinforcing member, wherein the longitudinal beam reinforcing member is arranged on the rear section body of the longitudinal beam, the longitudinal beam reinforcing member and the rear section body of the longitudinal beam form a cavity, and the lower cross beam body is connected with the longitudinal beam reinforcing member.
Further, still include coupling assembling, coupling assembling includes the lower connecting plate, and the lower crossbeam body is connected in longeron reinforcing member through the lower connecting plate.
Further, the connecting assembly further comprises an upper connecting plate, the upper connecting plate is covered on the lower connecting plate, the upper connecting plate and the lower connecting plate form a hollow cavity structure, and the upper connecting plate is lapped on the top surface of the longitudinal beam reinforcing member.
Further, the longeron reinforcing member includes reinforcing cover plate and backup pad, and reinforcing cover plate includes integrated into one piece's roof and curb plate, and the backup pad is connected in reinforcing cover plate's roof, and backup pad and curb plate correspond respectively and set up in roof Y to both ends so that longeron reinforcing member is the decurrent "nearly" style of calligraphy structure of opening, and longeron reinforcing member from top to bottom covers and locates longeron back end body and forms the cavity in longeron back end body's upper portion.
Further, the upper connecting plate is lapped on the top surface of the top plate, and the lower connecting plate is connected with the side plate.
Further, the two ends of the top plate in the X direction respectively extend to the rear section body of the longitudinal beam to form a supporting flanging, and the supporting flanging is connected to the top surface of the rear section body of the longitudinal beam.
Further, coupling assembling still includes the reinforcing plate in the connecting plate, and the reinforcing plate sets up in the position department between upper junction plate and lower connecting plate in the connecting plate, and the reinforcing plate is laminated in the bottom surface of upper junction plate along Y to one end in the connecting plate, and the reinforcing plate is laminated in the top surface of lower connecting plate along Y to the other end in the connecting plate.
Further, still include the longeron in reinforcing plate, the longeron back end body is the open cavity structure in bottom, and the position that the longeron in reinforcing plate corresponds longeron reinforcing member sets up in the cavity of longeron back end body, and the longeron in reinforcing plate separates the cavity of longeron back end body in the Z to.
Further, the rear part of the reinforcing plate in the longitudinal beam in the X direction is bent to the top of the rear section body of the longitudinal beam and is attached to the top surface of the cavity of the rear section body of the longitudinal beam.
The utility model has the beneficial effects that:
According to the connection structure of the rear section of the longitudinal beam and the lower cross beam of the rear floor, the longitudinal beam reinforcing member is arranged on the rear section body of the longitudinal beam, so that the rear section body of the longitudinal beam forms a space cavity structure, the lower cross beam body is connected to the longitudinal beam reinforcing member instead of being directly connected to the longitudinal beam, after the auxiliary frame is installed, the auxiliary frame is transmitted to the lower cross beam of the rear floor after being weakened through a cavity formed by the longitudinal beam reinforcing member and the rear section body of the longitudinal beam in the excitation transmission process, the structural rigidity is improved, the cavity structure also effectively absorbs energy and reduces vibration, excitation transmitted to the side of a vehicle body is effectively reduced, and the riding comfort of a passenger cabin is improved. In the utility model, the connecting component is also a space cavity structure formed by overlapping the multi-layer sheet metal parts, the structural rigidity of the connecting position is enhanced, the excitation transmitted to the vehicle body side by the auxiliary frame is effectively weakened by the multi-layer cavity structure, the structural rigidity and the energy absorption and vibration reduction capacity of the connecting position are further enhanced by the arrangement of the reinforcing plates in the longitudinal beam, the integral dynamic rigidity of the utility model is obviously improved, the utility model has good energy absorption and vibration reduction effects, and the driving comfort of the passenger cabin is practically improved.
Drawings
FIG. 1 is a top plan view of the structure of the present utility model;
FIG. 2 is a bottom isometric view of the present utility model;
FIG. 3 is a schematic view of the structure of the stringer stiffener of the present utility model;
FIG. 4 is a schematic exploded view of the structure of the stringer-stiffening member of the present utility model;
FIG. 5 is a schematic view of a connection assembly according to the present utility model;
FIG. 6 is a schematic exploded view of the structure of the connection assembly of the present utility model;
FIG. 7 is a schematic view of the installation structure of the reinforcing plate in the longitudinal beam of the present utility model.
Detailed Description
It should be noted that, in the description of the present specification, the terms "upper," "lower," "top," "bottom," "inner," "outer," "axial," "radial," "circumferential," and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, merely to facilitate description of the present utility model and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. It should be noted that, in this embodiment, X, Y and Z directions are both referred to the body of the rear section of the longitudinal beam, the X direction is the length direction of the body of the rear section of the longitudinal beam, the Y direction is the width direction of the body of the rear section of the longitudinal beam, the Z direction is the height direction of the body of the rear section of the longitudinal beam, and the upper, lower, top and bottom directions are also referred to the body of the rear section of the longitudinal beam, specifically, in this embodiment, the upper and top directions are described in the lower embodiment of fig. 2, but the front and rear directions are referred to the traveling direction of the vehicle, wherein the front is the front of the traveling direction of the vehicle, the right side is the front, the left side is the rear, and the above description is merely for the convenience of understanding the present utility model, but not limited thereto.
The utility model discloses a connection structure of a rear section of a longitudinal beam and a lower cross beam of a rear floor, which comprises a rear section body 8 of the longitudinal beam, a lower cross beam body 6 and a longitudinal beam reinforcing member, wherein the longitudinal beam reinforcing member is arranged on the rear section body 8 of the longitudinal beam, the longitudinal beam reinforcing member and the rear section body 8 of the longitudinal beam form a cavity, and the lower cross beam body 6 is connected with the longitudinal beam reinforcing member. In this embodiment, the longitudinal beam reinforcing member is disposed on the longitudinal beam rear section body 8, the lower cross beam body 6 is not directly connected to the longitudinal beam rear section body 8, but is connected to the longitudinal beam reinforcing member, and a cavity is further formed between the longitudinal beam reinforcing member and the longitudinal beam rear section body 8.
In this embodiment, the connecting assembly further comprises a lower connecting plate 5, and the lower cross beam body 6 is connected to the longitudinal beam reinforcing member through the lower connecting plate 5. In this embodiment, the coupling assembling still includes upper junction plate 3, and upper junction plate 3 covers and locates lower junction plate 5, and upper junction plate 3 and lower junction plate 5 form hollow cavity structure, and upper junction plate 3 overlap joint is in longeron reinforcement member's top surface. In this embodiment, the coupling assembling still includes reinforcing plate 4 in the connecting plate, and reinforcing plate 4 sets up in the connecting plate position department between upper junction plate 3 and lower junction plate 5 in the connecting plate, and reinforcing plate 4 laminating in the bottom surface of upper junction plate 3 along one end in the Y direction in the connecting plate, reinforcing plate 4 laminating in the top surface of lower junction plate 5 along the other end in the Y direction in the connecting plate. As shown in the figure, the upper connecting plate 3 and the lower connecting plate 5 in this embodiment are sheet metal parts with a shape of a Chinese character 'ji', the upper connecting plate 3 is covered from top to bottom along the Z direction to form a hollow cavity structure after the lower connecting plate 5, the lower edge of the upper connecting plate 3 is attached to the middle part of the side wall of the lower connecting plate 5, the lower edge of the lower connecting plate 5 is provided with a flanging structure, and one side, far away from the rear section body 8 of the longitudinal beam, of the lower connecting plate 5 is in fit with the lower cross beam body 6 and is connected through welding after being mutually overlapped. Set up a reinforcing plate 4 in the connecting plate 3 and the cavity of lower connecting plate 5 in, separate the cavity of upper connecting plate 3 and lower connecting plate 5 and carry out structural reinforcement, one side that reinforcing plate 4 is close to longeron back end body 8 in the connecting plate is as shown in the open box-packed structure, wherein be open towards longeron back end body 8 one side, reinforcing plate 4 is close to the inner wall face in the cavity of upper connecting plate 3 in the connecting plate one side laminating of longeron back end body 8 (laminating here means that the top surface of the surface of reinforcing plate 4 laminating in the connecting plate in the top surface of the cavity of upper connecting plate 3, the side laminating in the side of the cavity of upper connecting plate 3 of the surface of reinforcing plate 4 in the connecting plate, as shown in the drawings). One side of the connecting plate frame reinforcing plate, which is far away from the near longitudinal beam rear section body 8, is continuously bent and then attached to the top surface of the lower connecting plate 5, and is connected in a welding mode and the like.
In this embodiment, the longeron reinforcing member includes reinforcing cover plate 2 and backup pad 1, reinforcing cover plate 2 includes integrated into one piece's roof 201 and curb plate 202, the top periphery of backup pad 1 is laminated in the bottom surface of the roof 201 of reinforcing cover plate 2 through the turn-ups structure and is connected through welding, backup pad 1 and curb plate 202 correspond respectively and set up in roof 201Y to both ends so that longeron reinforcing member is open decurrent "nearly" style of calligraphy structure, longeron back end body 8 is the cavity structure that the bottom is open, and longeron reinforcing member suits with longeron back end body 8, longeron reinforcing member from top to bottom cover establishes behind longeron back end body 8, form the cavity in the upper portion of longeron back end body 8, the bottom side periphery of longeron back end body 8, backup pad 1 and curb plate 202 all is provided with the turn-ups structure, the turn-ups of backup pad 1 and curb plate 202 overlap in the turn-ups of longeron back end body 8's both sides as shown respectively and are connected through welding. The top surface undercut of roof 201 forms the overlap joint groove, and upper connecting plate 3 extends to the direction of longeron back end body 8 and overlap joint in the overlap joint inslot of roof 201 top surface, and the tip of one side of lower connecting plate 5 towards longeron back end body 8 then is laminated in the surface of curb plate 202 through the turn-ups structure and is connected in curb plate 202 through welded mode. The two ends of the top plate 201 in the X direction in this embodiment respectively extend to the rear section body 8 of the longitudinal beam to form a supporting flange 203, the supporting flange 203 extends to the surface of the rear section body 8 of the longitudinal beam, and the bottom side of the supporting flange 203 is bent and then attached to the top surface of the rear section body 8 of the longitudinal beam and is connected to the top surface of the rear section body 8 of the longitudinal beam in a welded manner.
In this embodiment, still include longeron internal reinforcement board 7, longeron internal reinforcement board 7 corresponds longeron reinforcing member's position and sets up in the cavity of longeron back end body 8, longeron internal reinforcement board 7 is provided with the turn-ups structure on the width direction of longeron back end body 8 (i.e. Y to), and the turn-ups structure of longeron internal reinforcement board 7 laminating is fixed in the lateral wall face of the cavity of roof beam back end body and through welded mode, and the cavity of longeron back end body 8 is separated in the Z to form two cavities to longeron internal reinforcement board 7. The X-direction rear part of the inner reinforcing plate 7 of the longitudinal beam is bent towards the top of the rear section body 8 of the longitudinal beam, and is attached to the top surface of the cavity of the rear section body 8 of the longitudinal beam after bending, so that the structural rigidity is further improved.
Finally, it is noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the same, and although the present utility model has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications and equivalents may be made thereto without departing from the spirit and scope of the technical solution of the present utility model, which is intended to be covered by the scope of the claims of the present utility model.
Claims (9)
1. The connection structure of the rear section of the longitudinal beam and the lower cross beam of the rear floor is characterized by comprising a rear section body of the longitudinal beam, a lower cross beam body and a longitudinal beam reinforcing member, wherein the longitudinal beam reinforcing member is arranged on the rear section body of the longitudinal beam, the longitudinal beam reinforcing member and the rear section body of the longitudinal beam form a cavity, and the lower cross beam body is connected with the longitudinal beam reinforcing member.
2. The structure for connecting a rear end of a side member to a rear underfloor cross member according to claim 1, further comprising a connecting assembly including a lower connecting plate, wherein the lower cross member body is connected to the side member reinforcement member through the lower connecting plate.
3. The structure for connecting a rear section of a longitudinal beam with a rear underfloor cross beam according to claim 2, wherein the connecting assembly further comprises an upper connecting plate, the upper connecting plate is covered on the lower connecting plate, the upper connecting plate and the lower connecting plate form a hollow cavity structure, and the upper connecting plate is lapped on the top surface of the longitudinal beam reinforcing member.
4. The structure for connecting a rear section of a longitudinal beam with an underfloor cross beam according to claim 3, wherein the longitudinal beam reinforcing member comprises a reinforcing cover plate and a supporting plate, the reinforcing cover plate comprises a top plate and a side plate which are integrally formed, the supporting plate is connected to the top plate of the reinforcing cover plate, the supporting plate and the side plate are respectively and correspondingly arranged at two ends of the top plate in the Y direction so that the longitudinal beam reinforcing member is of a downward opening 'nearly' shaped structure, and the longitudinal beam reinforcing member is covered on the rear section body of the longitudinal beam from top to bottom and forms a cavity at the upper part of the rear section body of the longitudinal beam.
5. The structure according to claim 4, wherein said upper connecting plate is overlapped with the top surface of said top plate, and said lower connecting plate is connected to said side plate.
6. The structure according to claim 4, wherein the two ends of the top plate in the X direction extend toward the rear end body of the side member to form support flanges, and the support flanges are connected to the top surface of the rear end body of the side member.
7. The structure for connecting a rear end of a side member to a rear underfloor cross member according to claim 3, wherein the connecting assembly further comprises an in-connecting-plate reinforcing plate disposed at a position between the upper connecting plate and the lower connecting plate, one end of the in-connecting-plate reinforcing plate in the Y direction is attached to the bottom surface of the upper connecting plate, and the other end of the in-connecting-plate reinforcing plate in the Y direction is attached to the top surface of the lower connecting plate.
8. The structure according to claim 1, wherein the structure further comprises an inner girder reinforcing plate, the inner girder reinforcing plate is of a cavity structure with an open bottom, the inner girder reinforcing plate is arranged in the cavity of the inner girder section body at a position corresponding to the girder reinforcing member, and the inner girder reinforcing plate separates the cavity of the inner girder section body in the Z direction.
9. The structure for connecting a rear section of a side member to an underfloor cross member according to claim 8, wherein the rear portion of the reinforcing plate in the side member in the X-direction is bent toward the top of the body of the rear section of the side member and is attached to the top surface of the cavity of the body of the rear section of the side member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202423276224.3U CN223590830U (en) | 2024-12-30 | 2024-12-30 | Structure for connecting rear section of longitudinal beam with lower cross beam of rear floor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202423276224.3U CN223590830U (en) | 2024-12-30 | 2024-12-30 | Structure for connecting rear section of longitudinal beam with lower cross beam of rear floor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN223590830U true CN223590830U (en) | 2025-11-25 |
Family
ID=97750259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202423276224.3U Active CN223590830U (en) | 2024-12-30 | 2024-12-30 | Structure for connecting rear section of longitudinal beam with lower cross beam of rear floor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN223590830U (en) |
-
2024
- 2024-12-30 CN CN202423276224.3U patent/CN223590830U/en active Active
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