A lower collision channel assembly structure and vehicle

Abstract

The present invention relates to the field of automobile technology, and specifically to a lower collision channel assembly structure and a vehicle, wherein the lower collision channel assembly structure comprises a crossbeam and two longitudinal beams; the two ends of the crossbeam are respectively fixedly connected to a longitudinal beam; at least one connecting member is fixedly arranged on the crossbeam; the longitudinal beam is a hollow structure, and the longitudinal beam comprises a first mounting hole, a second mounting hole and at least one third mounting hole; a threaded sleeve is fixedly arranged in the first mounting hole, a reinforcing sleeve is arranged in the second mounting hole, and a mounting sleeve is fixed in the third mounting hole; the threaded sleeve is used to connect with the bracket assembly; the mounting sleeve is used to connect with the front subframe assembly of the vehicle by bolts; the present invention reduces the number of bolts used by welding the crossbeam and the longitudinal beam into an integrated structure, which is conducive to lightweighting; and a second mounting hole is opened on the longitudinal beam to provide an installation space for the vehicle cooling system, and a reinforcing sleeve is arranged in the second mounting hole to improve the bearing capacity of the lower collision channel assembly structure.

Description

Technical Field

[0001] The present invention relates to the field of automobile technology, and in particular to a lower collision channel assembly structure and a vehicle. Background Art

[0002] With the improvement of vehicle safety performance, the design and application of lower collision channel assemblies are becoming more and more extensive. The main function of the lower collision channel assembly is to increase the channel for transmitting force, achieve better energy absorption effect, and improve the safety performance of the entire vehicle.

[0003] Depending on the vehicle's market positioning, both steel and aluminum lower crumple zone assemblies are used. Aluminum lower crumple zone assemblies offer better lightweighting and are more commonly used in new energy vehicles and mid-to-high-end vehicles. Lower crumple zone assemblies primarily consist of crossmembers and longitudinal beams.

[0004] The aluminum lower impact channel assembly's longitudinal beams connect to the front subframe. Due to the significant distance (over 500mm) between the lower impact channel assembly's crossbeam and the front subframe's mounting point, aluminum profile design is limited. The longitudinal beams are typically segmented and bolted together. The crossbeams are typically welded together using a single-sided overlap. The lower impact channel assembly is often joined using a combination of welding and bolting, resulting in suboptimal lightweighting. The crossbeams are typically single-sided overlapped, resulting in moderate joint strength.

[0005] Based on the shortcomings of the existing technology, it is urgent to study a lower collision channel assembly structure and a vehicle to solve the above problems. Summary of the Invention

[0006] In order to solve the above technical problems, the present invention provides a lower collision channel assembly structure and a vehicle. The present invention welds the crossbeam and the longitudinal beam into an integrated structure, which can reduce the number of bolts used, is conducive to lightweighting, reduces assembly hours and saves costs; and by opening a second mounting hole on the longitudinal beam to provide an installation space for the vehicle cooling system, and arranging a reinforcing sleeve in the second mounting hole, the load-bearing capacity of the longitudinal beam is improved, thereby improving the load-bearing capacity of the lower collision channel assembly structure.

[0007] The present invention discloses a lower collision channel assembly structure, which is used to be connected to the front subframe assembly of the vehicle, the front bumper of the vehicle and a bracket assembly for fixing the energy absorption box, and includes a crossbeam and two longitudinal beams;

[0008] The two ends of the cross beam are respectively fixedly connected to one of the longitudinal beams; at least one connecting member is fixedly provided on the cross beam, and the connecting member is used to connect to the front bumper of the vehicle;

[0009] The longitudinal beam is a hollow structure, and includes a first mounting hole, a second mounting hole and at least one third mounting hole;

[0010] A threaded sleeve is fixedly provided in the first mounting hole, a reinforcing sleeve is provided in the second mounting hole, and a mounting sleeve is fixedly provided in the third mounting hole;

[0011] The threaded sleeve is used to be connected to the bracket assembly; the mounting sleeve is used to be connected to the front subframe assembly of the vehicle through bolts.

[0012] Furthermore, a notch is provided at one end of the longitudinal beam, and the notch is L-shaped.

[0013] Furthermore, the crossbeam includes a first straight portion, an arc portion and a second straight portion arranged in sequence, the arc portion is arc-shaped, and the notch of one longitudinal beam is welded and fixed to the first straight portion, and the notch of another longitudinal beam is welded and fixed to the second straight portion.

[0014] Furthermore, the threaded sleeve is used to be fixedly connected to the bracket assembly through bolts, the threaded sleeve is a T-shaped structure, and the inner wall of the threaded sleeve is provided with threads.

[0015] Furthermore, at least one compression rib for absorbing crush energy is provided on the longitudinal beam, and the compression rib is provided near the notch.

[0016] Furthermore, the number of the connecting members is four, and the four connecting members are arranged at intervals along the length direction of the beam.

[0017] Furthermore, the axis of the second mounting hole is arranged parallel to the axis of the third mounting hole, the axis of the second mounting hole is consistent with the height direction of the longitudinal beam, and the axis of the first mounting hole is consistent with the width direction of the longitudinal beam.

[0018] Furthermore, the crossbeam is a hollow structure with unequal wall thickness, and reinforcing ribs are provided inside the crossbeam, and the reinforcing ribs are provided along the length direction of the crossbeam.

[0019] The present invention also protects a vehicle comprising a bracket assembly, an energy absorption box, a front subframe assembly structure of the vehicle, a front bumper of the vehicle, and the lower collision channel assembly structure as described above;

[0020] The energy absorption box is fixedly arranged on the bracket assembly, and the lower collision channel assembly structure is fixedly connected to the bracket assembly, the front bumper of the vehicle and the front subframe assembly structure of the vehicle respectively.

[0021] Furthermore, the bracket assembly includes a first bracket and two second brackets, and both ends of the first bracket are fixedly connected to the two second brackets respectively;

[0022] One end of one of the second brackets is threadedly connected to the threaded sleeve of one of the longitudinal beams, and one end of another of the second brackets is threadedly connected to the threaded sleeve of another of the longitudinal beams. The mounting sleeve is fixedly connected to one end of the front subframe assembly of the vehicle by a bolt, and the mounting sleeve is fixedly connected to the other end of the front subframe assembly of the vehicle by a bolt.

[0023] The implementation of the embodiments of the present invention has the following beneficial effects:

[0024] 1. The present invention welds the crossbeam and longitudinal beam into an integrated structure, which can reduce the number of bolts used, facilitate lightweighting, reduce assembly man-hours, and save costs. Furthermore, by providing a second mounting hole on the longitudinal beam to provide installation space for the vehicle cooling system and installing a reinforcing sleeve in the second mounting hole, the load-bearing capacity of the longitudinal beam is improved, thereby improving the load-bearing capacity of the lower collision channel assembly structure.

[0025] 2. The present invention provides a threaded sleeve connected to the bracket assembly, and provides a mounting sleeve connected to the front subframe assembly of the vehicle, which is beneficial to improving the bearing capacity of the longitudinal beam and increasing the force transmission channel. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the technical solution of the present invention, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present invention, and those skilled in the art can derive other drawings based on these drawings without inventive effort.

[0027] Figure 1 This is a structural diagram of the lower collision channel assembly structure described in this embodiment;

[0028] Figure 2 A top view of the lower collision channel assembly structure of this embodiment;

[0029] Figure 3 This is a structural diagram of the longitudinal beam described in this embodiment;

[0030] Figure 4 This is a structural diagram of the lower collision channel assembly structure and the front subframe assembly described in this embodiment after being connected.

[0031] Among them, the reference numerals in the figure correspond to:

[0032] 1-crossbeam; 2-longitudinal beam; 3-front subframe assembly; 4-second bracket; 5-energy absorption box; 6-first bracket; 11-connector; 12-first straight portion; 13-arc portion; 14-second straight portion; 15-reinforcement rib; 21-first mounting hole; 22-second mounting hole; 23-third mounting hole; 24-threaded sleeve; 25-reinforcement sleeve; 26-mounting sleeve; 27-notch; 28-pressed rib. DETAILED DESCRIPTION

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts shall fall within the scope of protection of the present invention.

[0034] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention 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 invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0035] The existing technology has the following shortcomings: The aluminum lower impact channel assembly longitudinal beam is connected to the front subframe. Due to the long distance (over 500mm) between the lower impact channel assembly crossbeam and the front subframe mounting point, the aluminum profile design is limited. The longitudinal beam is typically segmented and assembled with bolts. The crossbeam and longitudinal beam are typically welded together using a single-sided overlap. The lower impact channel assembly is often connected using a combination of welding and bolting, resulting in suboptimal lightweighting. The crossbeam and longitudinal beam are typically single-sided overlapped, resulting in limited joint strength.

[0036] In response to the defects of the prior art, the present invention welds the crossbeam and the longitudinal beam into an integrated structure, which can reduce the number of bolts used, facilitate lightweighting, reduce assembly hours and save costs; and by opening a second mounting hole on the longitudinal beam to provide an installation space for the vehicle cooling system, and arranging a reinforcing sleeve in the second mounting hole, the load-bearing capacity of the longitudinal beam is improved, thereby improving the load-bearing capacity of the lower collision channel assembly structure.

[0037] Example 1

[0038] See attached Figures 1 to 4 , this embodiment provides a lower collision channel assembly structure, which is used to be connected to the front subframe assembly 3 of the vehicle, the front bumper of the vehicle and the bracket assembly for fixing the energy absorption box 5, including a crossbeam 1 and two longitudinal beams 2;

[0039] The two ends of the crossbeam 1 are respectively fixedly connected to one of the longitudinal beams 2; at least one connecting member 11 is fixedly provided on the crossbeam 1, and the connecting member 11 is used to connect to the front bumper of the vehicle;

[0040] The longitudinal beam 2 is a hollow structure, and includes a first mounting hole 21, a second mounting hole 22 and at least one third mounting hole 23;

[0041] A threaded sleeve 24 is fixedly installed in the first mounting hole 21, a reinforcing sleeve 25 is installed in the second mounting hole 22, and a mounting sleeve 26 is fixed in the third mounting hole 23;

[0042] The threaded sleeve 24 is used to connect to the bracket assembly; the mounting sleeve 26 is used to connect to the front subframe assembly 3 of the vehicle through bolts.

[0043] It should be noted that: in this embodiment, the crossbeam 1 and the longitudinal beam 2 are welded into an integrated structure, which can reduce the number of bolts used, facilitate lightweighting, reduce assembly man-hours and save costs; and by opening a second mounting hole 22 on the longitudinal beam 2 to provide an installation space for the vehicle cooling system, and providing a reinforcing sleeve 25 in the second mounting hole 22, the load-bearing capacity of the longitudinal beam 2 is improved, thereby improving the load-bearing capacity of the lower collision channel assembly structure.

[0044] It should also be noted that: in this embodiment, a threaded sleeve 24 is provided to be connected to the bracket assembly, and a mounting sleeve 26 is provided to be connected to the front subframe assembly 3 of the vehicle, which is beneficial to improving the bearing capacity of the longitudinal beam and increasing the force transmission channel.

[0045] In this embodiment, the crossbeam 1, the longitudinal beam 2, the mounting sleeve 26, the threaded sleeve 24, and the reinforcement sleeve 25 are all made of aluminum profiles and extruded aluminum. The crossbeam 1, the longitudinal beam 2, the mounting sleeve 26, the threaded sleeve 24, and the reinforcement sleeve 25 are welded together, which reduces the number of bolts used, facilitates lightweighting, reduces assembly time, and saves costs.

[0046] Specifically, the cross-section of the reinforcement sleeve 25 is waist-shaped.

[0047] In this embodiment, the angle between the upper and lower end surfaces of the longitudinal beam 2 and the horizontal plane is 4.5°, which can reduce the height difference between the longitudinal beam 2 and the cross beam in the Z direction, increase the overlap area, and improve the connection strength.

[0048] In this embodiment, the number of the third mounting holes 23 is equal to the number of the mounting sleeves 26 , and the axis of the third mounting hole 23 coincides with the axis of the mounting sleeve 26 .

[0049] Specifically, there are two third mounting holes 23 , and the two third mounting holes 23 pass through the longitudinal beam 2 ; the mounting sleeve 26 is fixedly disposed inside the longitudinal beam 2 .

[0050] In other possible embodiments, the number of the third mounting holes 23 is not limited, and the number of the third mounting holes 23 can be set according to actual conditions.

[0051] Preferably, a notch 27 is provided at one end of the longitudinal beam 2 , and the notch 27 is L-shaped.

[0052] Preferably, the crossbeam 1 includes a first straight portion 12, an arc portion 13 and a second straight portion 14 arranged in sequence, the arc portion 13 is arc-shaped, and the notch 27 of one longitudinal beam 2 is welded and fixed to the first straight portion 12, and the notch 27 of the other longitudinal beam 2 is welded and fixed to the second straight portion 14.

[0053] Specifically, the arc portion 13 is configured to be in an arc shape, so that the longitudinal beam 2 bears the collision load, thereby improving the bearing capacity of the longitudinal beam 2 .

[0054] Specifically, the longitudinal beam 2 is overlapped with the cross beam 1 by an L-shaped notch, and the two are connected by 5 welds, which can improve the welding strength and enhance the bearing capacity of the lower collision channel assembly structure.

[0055] Preferably, the threaded sleeve 24 is used to be fixedly connected to the bracket assembly through bolts. The threaded sleeve 24 is a T-shaped structure, and the inner wall of the threaded sleeve 24 is provided with threads.

[0056] Preferably, at least one compression rib 28 for absorbing collapse energy is provided on the longitudinal beam 2 , and the compression rib 28 is provided near the notch 27 .

[0057] Specifically, by providing the compression ribs 28 on the longitudinal beam 2 , when the lower collision channel assembly structure is subjected to a collision load, the longitudinal beam can fully collapse and absorb energy.

[0058] In this embodiment, the number of the compression ribs 28 is four, two of the compression ribs 28 are arranged on one side of the longitudinal beam 2 , and the other two of the compression ribs 28 are arranged on the other side of the longitudinal beam 2 .

[0059] In other embodiments, the number of the pressing ribs 28 is not limited, and the number of the pressing ribs 28 is determined according to actual conditions.

[0060] Preferably, the number of the connecting members 11 is four, and the four connecting members 11 are arranged at intervals along the length direction of the beam 1 .

[0061] In some possible embodiments, the connecting member 11 is a rivet nut, which is fixedly disposed on the crossbeam 1 , and the crossbeam 1 is fixedly connected to the front bumper of the vehicle via the rivet nut.

[0062] Preferably, the axis of the second mounting hole 22 is arranged parallel to the axis of the third mounting hole 23 , the axis of the second mounting hole 22 is consistent with the height direction of the longitudinal beam 2 , and the axis of the first mounting hole 21 is consistent with the width direction of the longitudinal beam 2 .

[0063] Preferably, the crossbeam 1 is a hollow structure with unequal wall thickness, and reinforcing ribs 15 are provided inside the crossbeam 1 , and the reinforcing ribs 15 are provided along the length direction of the crossbeam 1 .

[0064] Specifically, the crossbeam 1 adopts a hollow structure with unequal wall thicknesses, and the wall thickness can be designed to be different according to the load conditions, which is conducive to lightweighting and thus saving costs.

[0065] In some possible embodiments, the length of the reinforcing rib 15 is equal to the length of the crossbeam 1 , so that the bearing capacity of the entire crossbeam 1 is increased.

[0066] The present invention also protects a vehicle comprising a bracket assembly, an energy absorption box 5, a front subframe assembly 3 structure of the vehicle, a front bumper of the vehicle and the lower collision channel assembly structure as described above;

[0067] The energy absorption box 5 is fixedly arranged on the bracket assembly, and the lower collision channel assembly structure is fixedly connected to the bracket assembly, the front bumper of the vehicle and the front subframe assembly 3 of the vehicle respectively.

[0068] Preferably, the bracket assembly includes a first bracket 6 and two second brackets 4, and both ends of the first bracket 6 are fixedly connected to the two second brackets 4 respectively;

[0069] One end of one of the second brackets 4 is threadedly connected to the threaded sleeve 24 of one of the longitudinal beams 2, and one end of another of the second brackets 4 is threadedly connected to the threaded sleeve 24 of another of the longitudinal beams 2. The mounting sleeve 26 is fixedly connected to one end of the front subframe assembly 3 of the vehicle by a bolt, and the mounting sleeve 26 is fixedly connected to the other end of the front subframe assembly 3 of the vehicle by a bolt.

[0070] The installation process of the vehicle with the lower collision channel assembly structure is as follows: the two ends of the first bracket 6 are respectively fixedly connected to the two second brackets 4; the two threaded sleeves 24 are respectively fixedly connected to the two second brackets 4 by bolts; the energy absorption box 5 is fixedly set on the second bracket 4; the mounting sleeves on the two longitudinal beams are respectively fixedly connected to the front subframe assembly 3 of the vehicle by bolts.

[0071] In a vehicle having the lower collision channel assembly structure, the crossbeam 1 and the longitudinal beam 2 are welded into an integrated structure, which can reduce the number of bolts used, facilitate lightweighting, reduce assembly man-hours and save costs; and by opening a second mounting hole 22 on the longitudinal beam 2 to provide an installation space for the vehicle cooling system, and providing a reinforcing sleeve 25 in the second mounting hole 22, the load-bearing capacity of the longitudinal beam 2 is improved, thereby improving the load-bearing capacity of the lower collision channel assembly structure.

[0072] Although the present invention has been described through preferred embodiments, the present invention is not limited to the embodiments described herein but includes various changes and modifications that may be made without departing from the scope of the present invention.

[0073] In this document, directional terms such as front, back, top, and bottom are defined based on the positions of components in the accompanying drawings and relative to each other, and are intended only for clarity and convenience in describing the technical solution. It should be understood that the use of these directional terms should not limit the scope of protection claimed in this application.

[0074] In the absence of conflict, the above embodiments and features in the embodiments can be combined with each other.

[0075] The above disclosure is only a preferred embodiment of the present invention and certainly cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are still within the scope of the present invention.

Claims

1. A lower collision channel assembly structure, used to be connected to a front subframe assembly (3) of a vehicle, a front bumper of the vehicle and a bracket assembly for fixing an energy absorption box (5), characterized in that: It comprises a crossbeam (1) and two longitudinal beams (2); Both ends of the crossbeam (1) are fixedly connected to one of the longitudinal beams (2); at least one connecting member (11) is fixedly provided on the crossbeam (1), and the connecting member (11) is used to connect to the front bumper of the vehicle; The longitudinal beam (2) is a hollow structure, and the longitudinal beam (2) includes a first mounting hole (21), a second mounting hole (22) and at least one third mounting hole (23); a notch (27) is provided at one end of the longitudinal beam (2), and the notch (27) is L-shaped; A threaded sleeve (24) is fixedly provided in the first mounting hole (21), a reinforcing sleeve (25) is provided in the second mounting hole (22), and a mounting sleeve (26) is fixedly provided in the third mounting hole (23); the cross section of the reinforcing sleeve (25) is waist-shaped; The threaded sleeve (24) is used to be connected to the bracket assembly; the mounting sleeve (26) is used to be connected to the front subframe assembly (3) of the vehicle via bolts.

2. The lower collision channel assembly structure according to claim 1, characterized in that: The crossbeam (1) comprises a first straight portion (12), an arc portion (13) and a second straight portion (14) which are arranged in sequence, the arc portion (13) being arc-shaped, and a notch (27) of one longitudinal beam (2) being welded and fixed to the first straight portion (12), and a notch (27) of another longitudinal beam (2) being welded and fixed to the second straight portion (14).

3. The lower collision channel assembly structure according to claim 1, characterized in that: The threaded sleeve (24) is used for being fixedly connected to the bracket assembly via bolts. The threaded sleeve (24) is a T-shaped structure, and the inner wall of the threaded sleeve (24) is provided with threads.

4. The lower collision channel assembly structure according to claim 1, characterized in that: At least one compression rib (28) for absorbing collapse energy is provided on the longitudinal beam (2), and the compression rib (28) is provided near the notch (27).

5. The lower collision channel assembly structure according to claim 1, characterized in that: The number of the connecting members (11) is four, and the four connecting members (11) are arranged at intervals along the length direction of the crossbeam (1).

6. The lower collision channel assembly structure according to claim 1, characterized in that: The axis of the second mounting hole (22) is arranged parallel to the axis of the third mounting hole (23), the axis of the second mounting hole (22) is consistent with the height direction of the longitudinal beam (2), and the axis of the first mounting hole (21) is consistent with the width direction of the longitudinal beam (2).

7. The lower collision channel assembly structure according to claim 1, characterized in that: The crossbeam (1) is a hollow structure with unequal wall thicknesses, and a reinforcing rib (15) is provided inside the crossbeam (1), wherein the reinforcing rib (15) is provided along the length direction of the crossbeam (1).

8. A vehicle, characterized in that: It comprises a bracket assembly, an energy absorption box (5), a front subframe assembly (3) structure of a vehicle, a front bumper of the vehicle and a lower collision channel assembly structure according to any one of claims 1 to 7; The energy absorption box (5) is fixedly arranged on the bracket assembly, and the lower collision channel assembly structure is fixedly connected to the bracket assembly, the front bumper of the vehicle and the front subframe assembly (3) structure of the vehicle respectively.

9. A vehicle according to claim 8, characterized in that: The bracket assembly comprises a first bracket (6) and two second brackets (4), and two ends of the first bracket (6) are fixedly connected to the two second brackets (4) respectively; One end of one of the second brackets (4) is threadedly connected to a threaded sleeve (24) of one of the longitudinal beams (2), and one end of another of the second brackets (4) is threadedly connected to a threaded sleeve (24) of another of the longitudinal beams (2). The mounting sleeve (26) is fixedly connected to one end of the front subframe assembly (3) of the vehicle via bolts, and the mounting sleeve (26) is fixedly connected to the other end of the front subframe assembly (3) of the vehicle via bolts.

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