Frame longitudinal beam based on internal high-pressure integral forming process

Abstract

The utility model discloses a frame longitudinal beam based on an internal high-pressure integral forming process. Relates to the technical field of vehicles. Comprising a main beam, a plurality of mounting holes are formed in the main beam, the radial section of the main beam is in a U shape, an auxiliary beam is arranged on the inner side of the main beam, the radial section of the auxiliary beam is also in a U shape, and an opening of the main beam is opposite to an opening of the auxiliary beam; a plurality of energy absorption boxes are arranged on the inner side of the auxiliary beam and arranged at intervals in the length direction of the auxiliary beam, one side of each energy absorption box is connected with the auxiliary beam, and the other side of each energy absorption box is connected with the main beam. The auxiliary beam can move towards the inner side of the main beam and compress the energy absorption box. According to the auxiliary beam, the energy absorption box can be extruded through movement of the auxiliary beam, then the energy absorption effect on the impact force of the main beam is achieved, and the impact resistance of the main beam is improved.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, specifically to a frame longitudinal beam based on an internal high-pressure integrated molding process. Background Technology

[0002] The frame longitudinal beams are a crucial component of a car; they form part of the vehicle's skeleton and are typically located at the bottom of the chassis. Their primary function is to support the weight of the entire vehicle and transfer various loads from the road to the wheels and suspension system. By increasing the strength and rigidity of the frame, the car's performance, safety, and stability can be improved, thus providing a safer and more enjoyable driving experience for the driver and passengers.

[0003] Chinese patent document CN220809553U discloses a longitudinal beam structure for an automobile frame, specifically disclosing two parallel longitudinal beams. Horizontal plates are horizontally fixed to the opposite sidewalls of the two longitudinal beams near their upper and lower ends. Several support components are detachably installed between the two horizontal plates in the same group. Several horizontal beams are detachably installed parallel to each other along the longitudinal direction between the two longitudinal beams. The ends of the horizontal beams are fixed to the horizontal plates by locking devices. Buffer plates are also slidably installed at the front ends of the two longitudinal beams. This patent solves the problem of the cumbersome process of fixing the horizontal beams to the longitudinal beams in traditional technology, where at least two or more fastening screws are required at each end.

[0004] However, the combination of the buffer plate and spring set on the longitudinal beam in this patent is too simple and cannot effectively absorb energy, thus failing to improve the overall safety of the frame. Utility Model Content

[0005] To overcome the problem that existing longitudinal beams cannot reliably absorb collision kinetic energy, this application provides a frame longitudinal beam based on an internal high-pressure integrated molding process.

[0006] This application adopts the following technical solution: a frame longitudinal beam based on an internal high-pressure integrated molding process, including a main beam, the main beam having a plurality of mounting holes, the radial cross-section of the main beam being U-shaped, a secondary beam being provided on the inner side of the main beam, the radial cross-section of the secondary beam also being U-shaped, and the opening of the main beam being opposite to the opening of the secondary beam.

[0007] The inner side of the sub-beam is provided with a plurality of energy-absorbing boxes, which are spaced apart along the length of the sub-beam. One side of each energy-absorbing box is connected to the sub-beam, and the other side of each energy-absorbing box is connected to the main beam.

[0008] The secondary beam can move toward the inside of the main beam and compress the energy-absorbing box.

[0009] Optionally, a plurality of waist-shaped holes are provided on both sides of the main beam along its length, and a plurality of sliding rods are provided on both sides of the secondary beam along its length.

[0010] One end of the slide rod is connected to the sub-beam, and the other end of the slide rod is inserted into the waist-shaped hole and can slide within the waist-shaped hole.

[0011] Optionally, a plurality of the sliding rods are respectively and correspondingly inserted into a plurality of the waist-shaped holes, and the end face of the sliding rod away from the sub-beam is flush with the outer wall of the main beam;

[0012] The waist-shaped hole extends along the width direction of the main beam, and the length of the waist-shaped hole is greater than the movable amount of the secondary beam.

[0013] Optionally, the energy-absorbing box includes a cover, partitions, and support columns. The radial cross-section of the cover is U-shaped. Several partitions are spaced apart on the inner side of the cover. Each of the two end faces of the cover is provided with a partition. Adjacent partitions are connected by several support columns.

[0014] Optionally, the cover is made of a resilient rubber material, and several of the support columns located on both sides of the same partition are staggered.

[0015] Optionally, the support column is a hollow tubular shape.

[0016] Compared with the prior art, this application sets a secondary beam and an energy-absorbing box on the inner side of the main beam, so that the main beam or the secondary beam can move relative to each other after being impacted, and achieve the compression effect on the energy-absorbing box. Finally, the bending and fracture of the support column in the energy-absorbing box achieves the absorption and conversion of the impact force, playing a reliable energy absorption role and greatly improving the impact resistance of the main beam. Attached Figure Description

[0017] Figure 1 This is a schematic perspective view of this application;

[0018] Figure 2 yes Figure 1 Enlarged structural reference diagram at point A;

[0019] Figure 3 yes Figure 1 Reference diagram of the action state;

[0020] Figure 4 This is a reference diagram of the explosion state of this application;

[0021] Figure 5 This is a reference diagram of the explosion state of the energy-absorbing box;

[0022] Figure 6 This is a cross-sectional view of the internal structure of the energy-absorbing box;

[0023] In the diagram: 1. Main beam; 11. Mounting hole; 12. Waist-shaped hole; 2. Secondary beam; 20. Sliding rod; 3. Energy-absorbing box; 31. Cover; 32. Partition plate; 33. Support column. Detailed Implementation

[0024] The present application will now be further described in conjunction with the accompanying drawings and specific embodiments. It should be noted that, without conflict, the various embodiments or technical features described below can be arbitrarily combined to form new embodiments.

[0025] like Figure 1-6 As shown, the longitudinal beam of the vehicle frame based on the internal high-pressure integrated molding process includes a main beam 1. The main beam 1 has several mounting holes 11. The reserved mounting holes 11 are used to connect the main beam 1 and the crossbeam. That is, the mounting holes 11 of the main beam 1 are aligned with the crossbeam, and then bolts are inserted into the mounting holes 11 to fix the main beam 1 and the crossbeam, thereby assembling the vehicle frame. The radial cross section of the main beam 1 is U-shaped. A secondary beam 2 is provided on the inner side of the main beam 1. The radial cross section of the secondary beam 2 is also U-shaped. Both the main beam 1 and the secondary beam 2 are integrally molded structures. The opening of the main beam 1 is opposite to the opening of the secondary beam 2. Several energy-absorbing boxes 3 are provided on the inner side of the secondary beam 2. The energy-absorbing boxes 3 are spaced apart along the length direction of the secondary beam 2. One side of the energy-absorbing box 3 is connected to the secondary beam 2, and the other side of the energy-absorbing box 3 is connected to the main beam 1. The secondary beam 2 can move towards the inner side of the main beam 1 and compress the energy-absorbing boxes 3.

[0026] After the main beam 1 or the sub-beam 2 is impacted, relative movement can occur between the main beam 1 and the sub-beam 2. That is, the sub-beam 2 can continue to move towards the inside of the main beam 1, thereby compressing the energy-absorbing box 3 during the movement. In this way, the collapse or fragmentation of the energy-absorbing box 3 can reliably absorb energy, maximizing the impact resistance of the main beam 1 and thus improving the safety of the frame.

[0027] Several oblong holes 12 are provided on both sides of the main beam 1 along its length, and several sliding rods 20 are provided on both sides of the secondary beam 2 along its length. One end of the sliding rod 20 is connected to the secondary beam 2, and the other end of the sliding rod 20 is inserted into the oblong hole 12 and can slide within the oblong hole 12. Through the cooperation of the sliding rod 20 and the oblong hole 12, the movement direction of the secondary beam 2 can be restricted, ensuring that the impact force received by the main beam 1 or the secondary beam 2 can be quickly transmitted to the energy absorption box 3, thereby improving the energy absorption effect.

[0028] Several sliding rods 20 are inserted into several oblong holes 12, one by one. The end face of the sliding rod 20 away from the sub-beam 2 is flush with the outer wall of the main beam 1. The oblong holes 12 extend along the width direction of the main beam 1, and the length of the oblong holes 12 is greater than the movable amount of the sub-beam 2. The sliding rods 20 do not extend to the outside of the oblong holes 12, so as to play a guiding role and not affect the flatness of the outer surface of the main beam 1. At the same time, the large length of the oblong holes 12 ensures that the sliding rods 20 will not contact the end of the oblong holes 12 before the open end of the sub-beam 2 hits the inner wall of the main beam 1, thus ensuring that the sub-beam 2 has the maximum stroke, which is convenient for squeezing the energy-absorbing box 3.

[0029] The energy-absorbing box 3 includes a cover 31, partitions 32, and support columns 33. The radial cross-section of the cover 31 is U-shaped. Several partitions 32 are spaced apart on the inner side of the cover 31. Each of the two end faces of the cover 31 has a partition 32. Adjacent partitions 32 are connected by several support columns 33. When the main beam 1 and the secondary beam 2 are impacted, the energy-absorbing box 3 begins to absorb energy. Specifically, the cover 31 deforms, the distance between adjacent partitions 32 decreases, and during this process, several support columns 33 are compressed. In this way, the energy absorption effect is achieved through the deformation and breakage of a large number of support columns 33, ensuring that the impact force on the main beam 1 and the secondary beam 2 can be reliably absorbed by the energy-absorbing box 3.

[0030] The casing 31 is made of elastic rubber material, and several support columns 33 located on both sides of the same partition 32 are staggered. The support columns 33 are hollow tubular. The casing 31 can undergo elastic deformation, which plays a preliminary role in limiting the partition 32 and the support columns 33. Moreover, it will not affect the change in the distance between two adjacent partitions 32 after being squeezed, thus ensuring that the energy-absorbing box 3 can achieve the energy absorption function through the bending and breaking of the support columns 33.

[0031] The above embodiments are merely preferred embodiments of this application and should not be construed as limiting the scope of protection of this application. Any non-substantial changes and substitutions made by those skilled in the art based on this application shall fall within the scope of protection claimed by this application.

Claims

1. A vehicle frame longitudinal beam based on an internal high-pressure integrated molding process, comprising a main beam (1), wherein the main beam (1) is provided with a plurality of mounting holes (11), characterized in that, The radial section of the main beam (1) is U-shaped, and a secondary beam (2) is provided on the inner side of the main beam (1). The radial section of the secondary beam (2) is also U-shaped. The opening of the main beam (1) and the opening of the secondary beam (2) are arranged opposite to each other. The inner side of the sub-beam (2) is provided with a plurality of energy-absorbing boxes (3), and the plurality of energy-absorbing boxes (3) are spaced apart along the length direction of the sub-beam (2). One side of the energy-absorbing box (3) is connected to the sub-beam (2), and the other side of the energy-absorbing box (3) is connected to the main beam (1). The secondary beam (2) can move toward the inside of the main beam (1) and compress the energy-absorbing box (3).

2. The vehicle frame longitudinal beam based on the internal high-pressure integrated molding process according to claim 1, characterized in that, Several waist-shaped holes (12) are provided on both sides of the main beam (1) along its length, and several sliding rods (20) are provided on both sides of the secondary beam (2) along its length. One end of the slide rod (20) is connected to the sub-beam (2), and the other end of the slide rod (20) is inserted into the waist-shaped hole (12) and can slide within the waist-shaped hole (12).

3. The longitudinal beam of the vehicle frame based on the internal high-pressure integrated molding process according to claim 2, characterized in that, Several sliding rods (20) are respectively and correspondingly inserted into several waist-shaped holes (12), and the end face of the sliding rod (20) away from the sub-beam (2) is flush with the outer wall of the main beam (1); The waist-shaped hole (12) extends along the width direction of the main beam (1), and the length of the waist-shaped hole (12) is greater than the movable amount of the secondary beam (2).

4. The vehicle frame longitudinal beam based on the internal high-pressure integrated molding process according to claim 2, characterized in that, The energy-absorbing box (3) includes a cover (31), partitions (32) and support columns (33). The radial cross section of the cover (31) is U-shaped. Several partitions (32) are spaced apart on the inner side of the cover (31). Each of the two end faces of the cover (31) is provided with a partition (32). Adjacent partitions (32) are connected by several support columns (33).

5. The longitudinal beam of the vehicle frame based on the internal high-pressure integrated molding process according to claim 4, characterized in that, The cover (31) is made of elastic rubber material, and several support columns (33) located on both sides of the same partition (32) are staggered.

6. The vehicle frame longitudinal beam based on the internal high-pressure integrated molding process according to claim 5, characterized in that, The support column (33) is a hollow tubular shape.

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