Energy absorption type impact-resistant automobile frame cross beam

Abstract

The invention relates to the technical field of automobile frames, and particularly discloses an energy-absorbing type impact-resistant automobile frame cross member which comprises a main body cross frame, a front framework movably arranged on the front side of the main body cross frame through a buffer part, and a sensor arranged on the front framework; the air bag assembly is installed in the main body transverse frame in an embedded mode, and the air bag assembly is connected with an air inlet assembly on the back face of the main body transverse frame; the connecting piece is fixed to the edge position of the back face of the main body transverse frame, the connecting piece is further movably connected with a guide support, and the guide support controls the arc-shaped swing motion of the main body transverse frame. The energy absorption type impact-resistant automobile frame cross member is mounted in a front-mounted manner, so that buffer type energy absorption protection of a collided object can be performed during collision while isolation protection of a cab can be performed, and secondary impact damage of the collided object is reduced.

Description

Technical Field

[0001] The invention relates to the technical field of automobile frames, in particular to an energy-absorbing and impact-resistant automobile frame crossbeam. Background Art

[0002] Existing motor vehicles, such as trailers, trucks and vans, which are medium to large vehicles, have external frame crossbeams installed on the frame to improve the safety of the vehicle's cockpit and reduce the impact on the cockpit and the front of the vehicle body caused by collisions during vehicle driving. This provides anti-collision protection for the vehicle. The frame crossbeam, i.e., the anti-collision beam, is used to move the impact site forward when a collision occurs, thereby avoiding direct contact between the cockpit and the impact site.

[0003] Among them, although the installation of the frame crossbeam, i.e., the anti-collision beam, can reduce the direct contact between the cockpit and the impact components and provide protection for the driver in the cockpit, the front setting of the frame crossbeam may also pose a safety hazard in use; for example, when the trailer and truck body collides with other objects or human bodies during medium and low speed driving, the front frame crossbeam may directly contact the collided object and form an impact, and then under the inertial impact of the body, the collided object may be hit a second time to the front position of the cockpit. Although the force of the secondary impact may be greatly reduced, thus providing protection for the cockpit, the collided object may also suffer secondary damage under the secondary impact. In particular, if the collided object is a living organism with vital signs, since the frame crossbeam is generally in a lower position, the secondary impact caused by the collision impact may cause fatal injuries to vital parts of the victim's head or cervical vertebra, making this type of automobile frame crossbeam have limitations in use and safety hazards.

[0004] In view of the above problems, it is urgent to carry out innovative design based on the original automobile frame crossbeam. Summary of the invention

[0005] The purpose of the present invention is to provide an energy-absorbing and impact-resistant automobile frame cross beam to solve the problem that the existing automobile frame cross beams proposed in the above background technology can only isolate and protect the cockpit part of the vehicle body, but cannot protect the collided object, and will cause the collided object to suffer secondary damage under the secondary impact of the impact external force.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an energy-absorbing and impact-resistant automobile frame cross beam, comprising: a main body cross frame, a front frame movably provided with a front structure through a buffer member on the front side, and a sensor is provided on the front structure; it also comprises: an airbag assembly, embeddedly installed inside the main body cross frame, the airbag assembly is connected to the air intake assembly on the back side of the main body cross frame; a connecting member, fixed to the back edge position of the main body cross frame, wherein the connecting member is also movably connected with a guide bracket, and the guide bracket controls the arc-shaped swinging movement of the main body cross frame.

[0007] Preferably, the buffer is slidably connected to the front side of the main body cross frame, and a buffer spring is provided between the connections; and an isolation shell for internally hiding the buffer is provided in the main body cross frame.

[0008] Preferably, the airbag assembly is arranged at intervals in the upper and lower parts inside the front side of the main body cross frame, and holes are provided at the top and bottom of the main body cross frame where the airbag assembly is located; the airbag assembly is connected with the air intake assembly, the air intake assembly is connected with the airbag inflation assembly, and the airbag inflation assembly is installed on the frame.

[0009] Preferably, the guide bracket is arranged in an arc shape, and the guide bracket and the connecting member are in a penetrating sliding connection, wherein the back side of the guide bracket is mounted on the vehicle frame by bolts.

[0010] Preferably, an elastic member is provided at the through connection between the guide bracket and the connecting member, and the elastic member is configured as an arc-shaped segmented structure, wherein the elastic member is used for centering control of the connecting member in the middle of the guide bracket and for buffering energy release.

[0011] Preferably, the guide bracket is provided with a positioning hole and a barrier strip for storing and limiting the elastic member; one end of the elastic member is fixed to the end of the positioning hole, and the other end is connected to the outer wall of the connecting member, and the positioning hole and the barrier strip are both arc-shaped.

[0012] Preferably, a damping wheel is rotatably installed inside the middle section of the guide bracket, and the damping wheel is driven by a hydraulic component installed on the outer side of the guide bracket, wherein the damping wheel drives the connecting piece to move in an arc on the guide bracket through rotation and damping friction.

[0013] Preferably, a rubber expansion layer is provided on the outer side of the damping wheel, and a gap is reserved between the two, wherein the middle rotating shaft of the damping wheel is hollow, and the interior of the hollow rotating shaft is connected with the gap; wherein the idle rotating shaft is connected with the external pipe at the center of the back side of the guide bracket.

[0014] Preferably, the external pipe is connected to an airbag inflation assembly, and the airbag inflation assembly is mounted on a vehicle frame, wherein an electric control valve for controlling the inflation amount is provided on the external pipe.

[0015] Preferably, an elastic isolation belt is fixed between the outer edge of the front structure and the front edge of the main cross frame, a plastic layer is installed on the outer surface of the main cross frame, the plastic layer corresponds to the position of the airbag assembly, and both hollow ends of the main cross frame are covered with covers.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: the energy-absorbing and impact-resistant automobile frame crossbeam is installed in front, and can not only isolate and protect the cockpit, but also provide buffering energy-absorbing protection for the collided object during collision, thereby reducing the secondary impact damage of the collided object. The specific contents are as follows:

[0017] 1. Through the buffer-type movable installation of the front structure and the sensors and radar components installed thereon, the front structure is in direct contact with the object being hit. Under the impact of the collision, it can react quickly and expand the airbag component through the airbag inflation component, so that the secondary impact of the object being hit is undertaken by the airbag component, reducing the secondary damage to the object being hit;

[0018] Furthermore, a movably connected connecting piece and a guide bracket are provided, and the guiding bracket is used to center the connecting piece by means of an arc-shaped elastic piece thereon. At the same time, when the front structure collides with the object being collided, due to the connection between the connecting piece and the guide bracket, the impact force of the collision can cause the main body cross frame front structure to swing in an arc shape. This swinging process is different from the rigid connection positioning, and can effectively release the kinetic energy of the impact position through the swinging action, and give the object being collided a lateral push movement during the collision, thereby absorbing the impact kinetic energy of the collision.

[0019] 2. A damping wheel driven by a hydraulic component is provided, and a rubber expansion layer is provided on the outer side of the damping wheel to be inflated by the airbag inflation component during a collision, so that the overall volume of the damping wheel and the rubber expansion layer is increased, and under the rotation of the damping wheel, the main cross frame and the expanded airbag component thereon are flipped at an angle, and the flipped and moved airbag component is used to receive the collided object, so as to avoid the collided object from colliding with the cockpit of the car again due to inertial impact after the collision, causing secondary injury; and the kinetic energy of the impact is absorbed and protected for the collided object. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the overall front structure of Embodiment 1 of the present invention;

[0021] Figure 2 This is a schematic diagram of the distribution structure of the main body cross frame and the airbag assembly in the first embodiment of the present invention;

[0022] Figure 3 This is a schematic diagram of the main cross-frame structure of the present invention;

[0023] Figure 4 It is a schematic diagram of the connection structure between the airbag assembly and the air intake assembly of the present invention;

[0024] Figure 5 This is a schematic diagram of the installation structure of the buffer member of the present invention;

[0025] Figure 6This is a schematic diagram of the front structure of the connection between the connecting piece and the guide bracket of the present invention;

[0026] Figure 7 This is a schematic diagram of the side structure of the connection between the connecting piece and the guide bracket of the present invention;

[0027] Figure 8 It is a schematic diagram of the cross-sectional structure of the connection between the connecting piece and the guide bracket of the present invention;

[0028] Fig. 9 This is a schematic diagram of the distribution structure of the elastic member, the positioning hole and the barrier strip of the present invention;

[0029] Fig.10 This is a schematic diagram of the installation structure of the rubber expansion layer of the present invention;

[0030] Fig.11 This is a schematic diagram of the overall front structure of the second embodiment of the present invention;

[0031] Fig.12 This is a schematic diagram of the overall side structure of the second embodiment of the present invention;

[0032] Fig.13 It is a schematic diagram of the distribution and installation of the elastic isolation belt, the plastic layer and the sealing structure in the second embodiment of the present invention.

[0033] In the figure: 1. Main body cross frame; 2. Front structure; 3. Buffer; 301. Isolation shell; 4. Airbag assembly; 401. Hole; 5. Air intake assembly; 6. Connector; 7. Guide bracket; 8. Elastic member; 801. Positioning channel; 802. Barrier strip; 9. Damping wheel; 901. Rubber expansion layer; 10. External tube; 11. Elastic isolation belt; 12. Plastic layer; 13. Cover. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. 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 creative work are within the scope of protection of the present invention.

[0035] Example 1: Please refer to Figure 1-Figure 10 The present invention provides a technical solution: an energy-absorbing and impact-resistant automobile frame crossbeam, comprising: a main body cross frame 1, a front frame 2 is movably provided on the front side of the main body cross frame 1 through a buffer 3, and a sensor is provided on the front frame 2; the buffer 3 is connected to the front side of the main body cross frame 1 in a through-type sliding manner, and a buffer spring is provided between the connections; and an isolation shell 301 is provided in the main body cross frame 1 to hide the buffer 3; the above technical solution is as follows Figure 1 and Figure 5 As shown, when the frame crossbeam directly contacts and collides with the object being collided, the external force of the impact can make the buffer 3 slide and retract and release energy through the buffer spring in advance, so as to prevent the object being collided directly with the main cross frame 1, causing deformation, extrusion and damage to the main cross frame 1 and the objects inside it. At the same time, the installation and setting of sensors, including but not limited to pressure sensors and induction radars, etc., when the front frame 2 and the object being collided in an extrusion-type collision and exceed the preset threshold of the collision, the subsequent airbag assembly 4 and the airbag inflation assembly are controlled by the integrated circuit to be activated; wherein the setting of the isolation shell 301 isolates the sliding displacement area of ​​the buffer 3, so as to prevent the telescopic sliding of the buffer 3 from causing scratches or extrusion-type damage to the airbag assembly 4 inside the main cross frame 1.

[0036] The technical solution also includes the following settings: an airbag assembly 4, which is embedded and installed inside the main body cross frame 1, and the airbag assembly 4 is connected to the air intake assembly 5 on the back of the main body cross frame 1; the airbag assembly 4 is spaced apart at the upper and lower parts inside the front side of the main body cross frame 1, wherein holes 401 are provided on the top and bottom of the main body cross frame 1 where the airbag assembly 4 is located; the airbag assembly 4 is through-connected with the air intake assembly 5, and the air intake assembly 5 is connected to the airbag inflation assembly, and the airbag inflation assembly is installed on the vehicle frame; when the airbag inflation assembly is working due to the control of the above-mentioned sensor and the supporting circuit, the airbag inflation assembly expands the airbag assembly 4 to form a safety airbag structure on the outside of the main body cross frame 1, forming a package, so that the subsequent collision impact will directly act on the safety airbag, and the safety airbag is used to absorb the impact kinetic energy, so as to reduce the damage to the collided object and achieve effective protection of the collided object.

[0037] At the same time, in the present technical scheme, a connecting member 6 is also provided, which is fixed to the back edge position of the main cross frame 1, wherein the connecting member 6 is also movably connected with a guide bracket 7, and the guide bracket 7 controls the arc-shaped swinging movement of the main cross frame 1; the guide bracket 7 is arranged in an arc shape, and the guide bracket 7 and the connecting member 6 are in a through sliding connection, wherein the back of the guide bracket 7 is installed on the frame by bolts; an elastic member 8 is arranged at the through connection between the guide bracket 7 and the connecting member 6, and the elastic member 8 is arranged as an arc-shaped segmented structure, wherein the elastic member 8 is used for the center positioning control and buffering energy release of the connecting member 6 in the middle of the guide bracket 7; a positioning channel 801 and a barrier strip 802 for storing, storing and limiting the elastic member 8 are arranged on the guide bracket 7; wherein one end of the elastic member 8 is fixed to the end of the positioning channel 801, and the other end is connected to the outer wall of the connecting member 6, and the positioning channel 801 and the barrier strip 802 are both arranged in an arc shape.

[0038] The above technical solution is set up, and the elastic member 8 is used to limit the center of the connecting member 6, so that the connecting member 6 is positioned at the middle section of the guide bracket 7 in a natural state. When the front frame 2 on the main body cross frame 1 is directly collided, the kinetic energy of the impact will cause the elastic member 8 to be compressed and deformed under the action of the impact external force, so that the connecting member 6 moves on the arc-shaped guide bracket 7, and the impact kinetic energy is released by its movement. At the same time, when the connecting member 6 and the guide bracket 7 move relative to each other, the main body cross frame 1 and the front frame 2 will also move synchronously, giving the collided object an external force to drive it upward, preventing the collided object from falling to the lower part of the vehicle body due to the inertia force of the collision and the movement of the vehicle body, causing secondary crushing damage to the collided object; wherein the matching setting of the positioning channel 801 and the barrier strip 802 improves the stability of the elastic member 8 during compression and expansion deformation, prevents it from falling off and loosening, and further maintains the stability of the connecting member 6 sliding in an arc on the guide bracket 7.

[0039] Another example Figure 6-Figure 10 In the technical solution shown, a damping wheel 9 is rotatably installed inside the middle section of the guide bracket 7, and the damping wheel 9 is driven by a hydraulic component installed on the outer side of the guide bracket 7, wherein the damping wheel 9 drives the connecting member 6 to move in an arc shape on the guide bracket 7 through rotation and damping friction; a rubber expansion layer 901 is arranged on the outer side of the damping wheel 9, and a gap is reserved between the two, wherein the middle rotating shaft of the damping wheel 9 is hollow, and the inside of the hollow rotating shaft is connected with the gap; wherein the idle shaft is connected with an external pipe 10 at the center of the back side of the guide bracket 7; the external pipe 10 is connected to the airbag inflation component, and the airbag inflation component is installed on the frame, wherein the external pipe 10 is provided with an electrically controlled valve for controlling the inflation amount; wherein through the setting of the airbag inflation component, when a collision impact exceeding a preset threshold is generated, the airbag inflation component will synchronously introduce high pressure to make the damping wheel 9 The rubber expansion layer 901 on the outside of the nylon wheel 9 expands, and the setting of the electronically controlled valve stabilizes the maximum deformation expansion degree of the pressure-regulated rubber expansion layer 901 and prevents pressure release. Furthermore, under the action of the hydraulic components working synchronously, the hydraulic components can use driving components such as hydraulic rotation to rotate the damping wheel 9. During rotation, due to the damping friction between the expanded rubber expansion layer 901 and the middle outer wall of the connecting member 6, the connecting member 6, the main cross frame 1 and the front frame 2 are driven to change the positioning installation angle under the action of the rotation and damping friction external forces, so that the airbag assembly 4 on the front frame 2 can be rotated to a positioning position after deployment, so that the collided object will directly collide with the front frame 2 and the airbag assembly 4 of the changed direction during the subsequent secondary collision, thereby achieving the energy absorption and protection effect of the collision impact kinetic energy.

[0040] Embodiment 2: This embodiment is based on embodiment 1 and adopts Figure 11-13In the technical solution shown, an elastic isolation belt 11 is fixed between the outer edge of the front structure 2 and the front side edge of the main body cross frame 1, and a plastic layer 12 is installed on the outer surface of the main body cross frame 1. The plastic layer 12 corresponds to the position of the airbag assembly 4, and both hollow ends of the main body cross frame 1 are sleeved with covers 13; through the installation and setting of the elastic isolation belt 11, the plastic layer 12 and the cover 13, the three are isolated in use to achieve the protective effect of the isolated objects, reducing the adverse effects of the natural environment on the frame beam in normal use. At the same time, the plastic layer 12 and the cover 13 will not affect the expansion of the airbag assembly 4. When the airbag assembly 4 collides and expands, it will quickly detach or rupture, so that the airbag assembly 4 will be able to expand and expand on the outside of the main body cross frame 1 and the front structure 2, forming a good technical protection effect.

[0041] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An energy-absorbing and impact-resistant automobile frame crossbeam, comprising: A main body cross frame (1) has a front frame (2) movably arranged on its front side via a buffer member (3), and a sensor is arranged on the front frame (2); It is characterized by further comprising: An airbag assembly (4) is embedded in the interior of the main body cross frame (1), and the airbag assembly (4) is connected to an air intake assembly (5) on the back of the main body cross frame (1); The connecting member (6) is fixed to the back edge of the main body cross frame (1), wherein the connecting member (6) is also movably connected to a guide bracket (7), and the guide bracket (7) controls the arc-shaped swinging movement of the main body cross frame (1).

2. The energy-absorbing and impact-resistant automobile frame crossbeam according to claim 1, characterized in that: The buffer member (3) is slidably connected to the front side of the main body cross frame (1), and a buffer spring is provided between the connections; In addition, an isolation shell (301) for internally hiding the buffer component (3) is provided in the main body cross frame (1).

3. The energy-absorbing and impact-resistant automobile frame crossbeam according to claim 1, characterized in that: The airbag components (4) are arranged at intervals at the upper and lower parts of the front side of the main body cross frame (1), wherein the top and bottom parts of the main body cross frame (1) where the airbag components (4) are located are provided with holes (401); The airbag assembly (4) is connected to the air intake assembly (5), the air intake assembly (5) is connected to the airbag inflation assembly, and the airbag inflation assembly is mounted on the vehicle frame.

4. The energy-absorbing and impact-resistant automobile frame cross beam according to claim 1, characterized in that: The guide bracket (7) is arranged in an arc shape, and the guide bracket (7) and the connecting member (6) are in a penetrating sliding connection, wherein the back side of the guide bracket (7) is mounted on the vehicle frame by means of bolts.

5. The energy-absorbing and impact-resistant automobile frame cross beam according to claim 4, characterized in that: An elastic member (8) is provided at the through-connection between the guide bracket (7) and the connecting member (6), and the elastic member (8) is configured as an arc-shaped segmented structure, wherein the elastic member (8) is used for centering control of the connecting member (6) in the middle of the guide bracket (7) and for buffering and releasing energy.

6. The energy-absorbing and impact-resistant automobile frame cross beam according to claim 5, characterized in that: The guide bracket (7) is provided with a positioning hole (801) and a barrier strip (802) for storing and limiting the elastic member (8); One end of the elastic member (8) is fixed to the end of the positioning hole (801), and the other end is connected to the outer wall of the connecting member (6). At the same time, the positioning hole (801) and the barrier strip (802) are both arranged in an arc shape.

7. An energy-absorbing and impact-resistant automobile frame crossbeam according to claim 1 or 4, characterized in that: A damping wheel (9) is rotatably mounted inside the middle section of the guide bracket (7), and the damping wheel (9) is driven by a hydraulic assembly mounted outside the guide bracket (7), wherein the damping wheel (9) drives the connecting member (6) to move in an arc shape on the guide bracket (7) through rotation and damping friction.

8. The energy-absorbing and impact-resistant automobile frame cross beam according to claim 7, characterized in that: A rubber expansion layer (901) is arranged on the outer side of the damping wheel (9), and a gap is reserved between the two, wherein the middle rotating shaft of the damping wheel (9) is hollow, and the interior of the hollow rotating shaft is connected to the gap; The idle shaft is connected to the external pipe (10) at the center of the back side of the guide bracket (7).

9. The energy-absorbing and impact-resistant automobile frame cross beam according to claim 8, characterized in that: The external pipe (10) is connected to an airbag inflation component, and the airbag inflation component is mounted on a vehicle frame, wherein an electric control valve for controlling the inflation amount is arranged on the external pipe (10).

10. The energy-absorbing and impact-resistant automobile frame cross beam according to claim 1, characterized in that: An elastic isolation belt (11) is fixed between the outer edge of the front frame (2) and the front edge of the main cross frame (1), and a plastic layer (12) is installed on the outer surface of the main cross frame (1). The plastic layer (12) corresponds to the position of the airbag assembly (4), and both hollow ends of the main cross frame (1) are covered with covers (13).

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