Stepped full-frame front auxiliary frame

Abstract

The invention provides a stepped full-frame front subframe, which comprises a first cross beam, a second cross beam and two buffer rod groups, and is characterized in that each buffer rod group comprises a first longitudinal beam, a second longitudinal beam and a third longitudinal beam, one end of the first longitudinal beam is connected to the second longitudinal beam in a sliding manner, and the other end of the first longitudinal beam is connected to the third longitudinal beam in a sliding manner; a first buffering assembly is arranged at the end, close to the second longitudinal beam, of the first longitudinal beam. A second buffering assembly is arranged at the end, close to the third longitudinal beam, of the first longitudinal beam. According to the scheme, the first buffering assembly is arranged at the end, close to the second longitudinal beam, of the first longitudinal beam, and the second buffering assembly is arranged at the end, close to the third longitudinal beam, of the first longitudinal beam, so that when the third longitudinal beam slides towards the first longitudinal beam, non-Newtonian fluid in the second buffering assembly absorbs impact force for the first time; when the first longitudinal beam slides towards the second longitudinal beam, damping oil in the first buffering assembly absorbs impact force for the second time, and therefore the purpose of improving the impact resistance of the stepped full-frame front auxiliary frame is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of frame production, and specifically relates to a stepped full-frame front subframe. Background Art

[0002] In the automotive architecture, the front subframe of an automobile, as an important component in the chassis, is mainly used to support the steering gear and stabilizer bar, carry components such as the front control arm and powertrain mounts, and connect with the body to form the front horizontal module. With the development of automotive lightweighting, the use of alternative materials such as aluminum alloy has become the trend of automotive development.

[0003] However, the damping effect of the traditional front subframe is poor, resulting in weak impact resistance. Therefore, a front subframe with strong impact resistance is needed. Summary of the Invention

[0004] (1) Technical Problems to be Solved

[0005] In view of the deficiencies of the prior art, the present invention provides a stepped full-frame front subframe, which solves the problems raised in the above background art.

[0006] (2) Technical Solutions

[0007] To achieve the above objectives, the present invention is realized through the following technical solutions: A stepped full-frame front subframe, characterized in that: it includes a first crossbeam, a second crossbeam and two buffer rod groups, and is characterized in that: the buffer rod group includes a first longitudinal beam, a second longitudinal beam and a third longitudinal beam, one end of the first longitudinal beam is slidably connected to the second longitudinal beam, the other end of the first longitudinal beam is slidably connected to the third longitudinal beam, a first buffer assembly is arranged at one end of the first longitudinal beam close to the second longitudinal beam, a second buffer assembly is arranged at one end of the first longitudinal beam close to the third longitudinal beam, the first crossbeam is fixedly connected to the end of the third longitudinal beam away from the first longitudinal beam, a front arm bracket is slidably connected to the first crossbeam, a rear rotating arm is rotatably connected to the end of the second longitudinal beam away from the first longitudinal beam, and both ends of the second crossbeam are fixedly connected to the two rear rotating arms respectively.

[0008] Preferably, the first buffer assembly includes a third buffer plate and a fourth buffer plate. A first buffer cavity is opened at one end of the first longitudinal beam close to the second longitudinal beam. A third buffer plate is fixedly connected in the first buffer cavity. A third opening is opened on the third buffer plate. A fourth buffer plate is slidably connected in the first buffer cavity. A second sealing slide plate is fixedly connected to the end of the second longitudinal beam close to the first longitudinal beam. A second cavity is enclosed by the second sealing slide plate and the fourth buffer plate. A third cavity is enclosed by the fourth buffer plate and the first longitudinal beam. The second cavity is filled with damping oil, and the third cavity is filled with inert gas.

[0009] Preferably, a second limiting rod is fixedly connected to one end of the third buffer plate close to the second sealing slide plate. A limiting plate is fixedly connected to the end of the second limiting rod away from the third buffer plate. A current limiting plate is sleeved on the outer circumferential surface of the second limiting rod. A second elastic member is fixedly connected to the current limiting plate. One end of the second elastic member away from the current limiting plate is fixedly connected to the limiting plate. A current limiting groove is formed on one side of the third opening close to the second cavity.

[0010] Preferably, a first cavity is formed on one end face of the first longitudinal beam of the second buffer assembly close to the third longitudinal beam. The third longitudinal beam is slidably connected to the first cavity. The first cavity is filled with non-Newtonian fluid.

[0011] Preferably, a fourth cavity is formed at one end of the first cross beam away from the third longitudinal beam. A plurality of first elastic members are fixedly connected in the fourth cavity. A first sliding connecting rod is slidably connected in the fourth cavity. One end of the first sliding connecting rod is fixedly connected to the first elastic member. The other end of the first sliding connecting rod is fixedly connected to the front arm bracket.

[0012] Preferably, a first slot is formed on the second longitudinal beam. A second opening is formed on one side of the first slot. A first limiting rod is rotatably arranged in the second opening. Both ends of the first limiting rod are respectively fixedly connected to the two rear rotating arms. The rear rotating arm is rotatably connected to the first slot.

[0013] Preferably, first sleeves are fixedly connected to both ends of the first cross beam. A third sleeve base is fixedly connected to the surface of the rear rotating arm away from the second cross beam. A third sleeve is fixedly connected to the third sleeve base.

[0014] Preferably, a second sleeve is fixedly sleeved on the first longitudinal beam. A limiting seat is fixedly connected to the outer circumferential surface of the second sleeve. A first opening is formed on the limiting seat.

[0015] (III) Beneficial effects

[0016] The present invention provides a stepped full-frame front subframe. It has the following beneficial effects:

[0017] 1. By arranging a first buffer assembly at one end of the first longitudinal beam close to the second longitudinal beam and a second buffer assembly at one end of the first longitudinal beam close to the third longitudinal beam in this solution, when the third longitudinal beam slides towards the first longitudinal beam, the non-Newtonian fluid in the second buffer assembly absorbs the impact force for the first time. When the first longitudinal beam slides towards the second longitudinal beam, the damping oil in the first buffer assembly absorbs the impact force for the second time, so as to achieve the purpose of improving the impact resistance of the stepped full-frame front subframe. Description of the drawings

[0018] Figure 1 is the front view structural schematic diagram of the present invention;

[0019] Figure 2 is the top view structural schematic diagram of the present invention;

[0020] Figure 3 is Figure 2 the sectional structural schematic diagram of A-A in

[0021] Figure 4 is Figure 2 the sectional structural schematic diagram of B-B in

[0022] Figure 5 is Figure 3 the enlarged structural schematic diagram of C in

[0023] Figure 6 is Figure 3 the enlarged structural schematic diagram of D in

[0024] In the figure: 11, the first longitudinal beam; 12, the second longitudinal beam; 13, the third longitudinal beam; 14, the first cross beam; 15, the first sleeve; 16, the second sleeve; 17, the limit seat; 18, the first opening; 20, the first elastic member; 21, the first sliding link; 22, the front arm bracket; 23, the first slot; 24, the rear rotating arm; 25, the second opening; 26, the first limit rod; 27, the second cross beam; 28, the third sleeve base; 29, the third sleeve; 30, the first cavity; 31, the first sealing slide plate; 32, the second sealing slide plate; 33, the third buffer plate; 34, the fourth buffer plate; 35, the second cavity; 36, the third cavity; 37, the third opening; 38, the flow limiting groove; 39, the second limit rod; 40, the limit plate; 41, the flow limiting plate; 42, the second elastic member; 43, the fourth cavity. Detailed implementation manners

[0025] An embodiment of the present invention provides a stepped full-frame front subframe, as Figures 1-6 shown, including the first longitudinal beam 11, the second longitudinal beam 12, the third longitudinal beam 13, the first cross beam 14, the first sleeve 15, the second sleeve 16, the limit seat 17, the first opening 18, the first elastic member 20, the first sliding link 21, the front arm bracket 22, the first slot 23, the rear rotating arm 24, the second opening 25, the first limit rod 26, the second cross beam 27, the third sleeve base 28, the third sleeve 29, the first cavity 30, the first sealing slide plate 31, the second sealing slide plate 32, the third buffer plate 33, the fourth buffer plate 34, the second cavity 35, the third cavity 36, the third opening 37, the flow limiting groove 38, the second limit rod 39, the limit plate 40, the flow limiting plate 41, the second elastic member 42, and the fourth cavity 43.

[0026] As Figures 1-6As shown in the figure, the buffer rod group includes a first longitudinal beam 11, a second longitudinal beam 12 and a third longitudinal beam 13. One end of the first longitudinal beam 11 is slidably connected to the second longitudinal beam 12, and the other end of the first longitudinal beam 11 is slidably connected to the third longitudinal beam 13. A first buffer assembly is provided at one end of the first longitudinal beam 11 close to the second longitudinal beam 12, and a second buffer assembly is provided at one end of the first longitudinal beam 11 close to the third longitudinal beam 13. A first cross beam 14 is fixedly connected to the end of the third longitudinal beam 13 away from the first longitudinal beam 11. A forearm bracket 22 is slidably connected to the first cross beam 14. The end of the second longitudinal beam 12 away from the first longitudinal beam 11 is rotatably connected to a rear rotating arm 24. Both ends of a second cross beam 27 are fixedly connected to the two rear rotating arms 24 respectively.

[0027] The first buffer assembly includes a third buffer plate 33 and a fourth buffer plate 34. A first buffer cavity is opened at one end of the first longitudinal beam 11 close to the second longitudinal beam 12. The third buffer plate 33 is fixedly connected in the first buffer cavity. A third opening 37 is opened on the third buffer plate 33. A fourth buffer plate 34 is slidably connected in the first buffer cavity. A second sealing slide plate 32 is fixedly connected to the end of the second longitudinal beam 12 close to the first longitudinal beam 11. A second cavity 35 is defined by the second sealing slide plate 32 and the fourth buffer plate 34. A third cavity 36 is defined by the fourth buffer plate 34 and the first longitudinal beam 11. The second cavity 35 is filled with damping oil, and the third cavity 36 is filled with inert gas.

[0028] One end of the third buffer plate 33 close to the second sealing slide plate 32 is fixedly connected to a second limiting rod 39. The end of the second limiting rod 39 away from the third buffer plate 33 is fixedly connected to a limiting plate 40. A current limiting plate 41 is sleeved on the outer cylindrical surface of the second limiting rod 39. A second elastic member 42 is fixedly connected to the current limiting plate 41. The end of the second elastic member 42 away from the current limiting plate 41 is fixedly connected to the limiting plate 40. A current limiting groove 38 is opened on one side of the third opening 37 close to the second cavity 35.

[0029] For the second buffer assembly, a first cavity 30 is opened on the end face of the first longitudinal beam 11 close to the third longitudinal beam 13. The third longitudinal beam 13 is slidably connected to the first cavity 30. The first cavity 30 is filled with non-Newtonian fluid.

[0030] A fourth cavity 43 is opened at the end of the first cross beam 14 away from the third longitudinal beam 13. A number of first elastic members 20 are fixedly connected in the fourth cavity 43. A first sliding connecting rod 21 is slidably connected in the fourth cavity 43. One end of the first sliding connecting rod 21 is fixedly connected to the first elastic member 20, and the other end of the first sliding connecting rod 21 is fixedly connected to the forearm bracket 22.

[0031] A first slot 23 is formed in the second longitudinal beam 12, a second opening 25 is formed on one side of the first slot 23, a first limiting rod 26 is rotatably arranged in the second opening 25, and two ends of the first limiting rod 26 are respectively fixedly connected to two rear rotating arms 24, and the rear rotating arms 24 are rotatably connected to the first slot 23.

[0032] Both ends of the first cross beam 14 are fixedly connected with first sleeves 15, a third sleeve base 28 is fixedly connected to a surface of the rear rotating arm 24 away from the second cross beam 27, a third sleeve 29 is fixedly connected to the third sleeve base 28, a second sleeve 16 is fixedly sleeved on the first longitudinal beam 11, a limiting seat 17 is fixedly connected to an outer circumferential surface of the second sleeve 16, and a first opening 18 is formed in the limiting seat 17.

[0033] When the shock absorption and buffering of this solution are carried out, first, the front arm bracket 22 is subjected to an impact force. The front arm bracket 22 drives the first sliding link 21 towards the fourth cavity 43, and the first sliding link 21 compresses the first elastic member 20. Thus, the first elastic member 20 pushes the third longitudinal beam 13 towards the first longitudinal beam 11 through the first cross beam 14. The third longitudinal beam 13 compresses the non-Newtonian fluid in the first cavity 30 through the first sealing slide plate 31, so that the non-Newtonian fluid solidifies, and thus the first longitudinal beam 11 slides towards the second longitudinal beam 12.

[0034] Then, when the first longitudinal beam 11 slides towards the second longitudinal beam 12, the second longitudinal beam 12 compresses the damping oil on a side of the second cavity 35 close to the second sealing slide plate 32 and near the third buffer plate 33 through the second sealing slide plate 32. The damping oil enters the third opening 37 from the flow limiting groove 38 and enters the second cavity 35 on a side of the third buffer plate 33 close to the fourth buffer plate 34 after passing through the third opening 37.

[0035] Finally, after the damping oil enters the second cavity 35 on a side of the third buffer plate 33 close to the fourth buffer plate 34, it pushes the fourth buffer plate 34 to slide in a direction away from the third buffer plate 33. The fourth buffer plate 34 compresses the inert gas in the third cavity 36, and the impact force received by the front arm bracket 22 is absorbed through the solidification of the non-Newtonian fluid and the compression of the damping oil, thus completing the shock absorption and buffering.

[0036] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirits of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A stepped full-frame front subframe, comprising a first crossbeam (14), a second crossbeam (27) and two buffer rod groups, characterized in that: The buffer rod group includes a first longitudinal beam (11), a second longitudinal beam (12) and a third longitudinal beam (13). One end of the first longitudinal beam (11) is slidably connected to the second longitudinal beam (12), and the other end of the first longitudinal beam (11) is slidably connected to the third longitudinal beam (13). A first buffer assembly is provided at one end of the first longitudinal beam (11) close to the second longitudinal beam (12), and a second buffer assembly is provided at one end of the first longitudinal beam (11) close to the third longitudinal beam (13). The first cross beam (14) is fixedly connected to one end of the third longitudinal beam (13) away from the first longitudinal beam (11), and a forearm bracket (22) is slidably connected to the first cross beam (14). One end of the second longitudinal beam (12) away from the first longitudinal beam (11) is rotatably connected to a rear rotating arm (24), and both ends of the second cross beam (27) are fixedly connected to the two rear rotating arms (24).

2. The stepped full-frame front subframe according to claim 1, characterized in that: The first buffer assembly includes a third buffer plate (33) and a fourth buffer plate (34). A first buffer cavity is formed at one end of the first longitudinal beam (11) close to the second longitudinal beam (12). The third buffer plate (33) is fixedly connected in the first buffer cavity. A third opening (37) is formed on the third buffer plate (33). The fourth buffer plate (34) is slidably connected in the first buffer cavity. A second sealing slide plate (32) is fixedly connected to one end of the second longitudinal beam (12) close to the first longitudinal beam (11). A second cavity (35) is defined by the second sealing slide plate (32) and the fourth buffer plate (34). A third cavity (36) is defined by the fourth buffer plate (34) and the first longitudinal beam (11). The second cavity (35) is filled with damping oil, and the third cavity (36) is filled with inert gas.

3. The stepped full-frame front subframe according to claim 2, characterized in that: A second limiting rod (39) is fixedly connected to one end of the third buffer plate (33) close to the second sealing slide plate (32). A limiting plate (40) is fixedly connected to the end of the second limiting rod (39) away from the third buffer plate (33). A current limiting plate (41) is sleeved on the outer circumferential surface of the second limiting rod (39). A second elastic member (42) is fixedly connected to the current limiting plate (41). One end of the second elastic member (42) away from the current limiting plate (41) is fixedly connected to the limiting plate (40). A current limiting groove (38) is formed on one side of the third opening (37) close to the second cavity (35).

4. A stepped full-frame front subframe according to claim 2, characterized in that: A first cavity (30) is formed on the end face of the first longitudinal beam (11) of the second buffer assembly close to the third longitudinal beam (13). The third longitudinal beam (13) is slidably connected to the first cavity (30). The first cavity (30) is filled with non-Newtonian fluid.

5. A stepped full-frame front subframe according to claim 1, characterized in that: One end of the first cross beam (14) away from the third longitudinal beam (13) is provided with a fourth cavity (43). A number of first elastic members (20) are fixedly connected in the fourth cavity (43). A first sliding connecting rod (21) is slidably connected in the fourth cavity (43). One end of the first sliding connecting rod (21) is fixedly connected to the first elastic member (20), and the other end of the first sliding connecting rod (21) is fixedly connected to the forearm bracket (22).

6. The stepped full-frame front subframe according to claim 1, characterized in that: A first slot (23) is provided on the second longitudinal beam (12). A second opening (25) is provided on one side of the first slot (23). A first limiting rod (26) is rotatably arranged in the second opening (25). Two ends of the first limiting rod (26) are respectively fixedly connected to the two rear rotating arms (24). The rear rotating arm (24) is rotatably connected to the first slot (23).

7. The stepped full-frame front subframe according to claim 1, characterized in that: Both ends of the first cross beam (14) are fixedly connected with first sleeves (15). A third sleeve base (28) is fixedly connected to a surface of the rear rotating arm (24) away from the second cross beam (27). A third sleeve (29) is fixedly connected to the third sleeve base (28).

8. The stepped full-frame front subframe according to claim 1, characterized in that: A second sleeve (16) is fixedly sleeved on the first longitudinal beam (11). A limiting seat (17) is fixedly connected to an outer circumferential surface of the second sleeve (16). A first opening (18) is provided on the limiting seat (17).

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