Automobile impact buffer

Abstract

The invention relates to the technical field of vehicle buffering, in particular to an automobile impact buffer which comprises a bearing type frame, the bearing type frame comprises a cross beam and a longitudinal beam, a buffer frame plate is installed on the longitudinal beam of the bearing type frame, and a first-stage buffer assembly used for buffering the inner side of the cross beam is arranged on the outer side of the buffer frame plate. A second-stage buffering assembly is arranged on the inner side of the buffering frame plate, the supporting strength of the second-stage buffering assembly is larger than that of the first-stage buffering assembly, and the second-stage buffering assembly is used for buffering impact force exceeding the buffering stroke of the first-stage buffering assembly. And two groups of lateral buffering assemblies for buffering the side surfaces of an impact object penetrating through the cross beams are arranged on the longitudinal beams of the bearing type frame. Through the arrangement of the lateral buffering assembly, when a vehicle collides with an object and the object penetrates through the cross beam of the bearing type vehicle frame and intrudes into a vehicle body, the lateral buffering assembly can be automatically started to clamp the object from the two sides, the buffering contact face with the object is enlarged, and the situation that the object intrudes into a battery bin to cause a major accident of fire is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle buffering, in particular to an automobile impact buffer. Background Art

[0002] The automobile impact buffer is a device used to buffer the impact force by doing work when the automobile is hit, so as to protect the safety of the vehicle and the people in the vehicle. The existing patent number CN114906084A proposes an automobile impact hydraulic buffer, which includes an arc plate, the arc plate has an arc plate-shaped hollow structure, the arc plate is arranged at the front end or rear end of the automobile, the interior of the arc plate is provided with a front baffle and a rear baffle, the outer side of the rear baffle is provided with a reinforcement sleeve, the reinforcement sleeve has a hollow columnar structure; the interior of the reinforcement sleeve is provided with a hydraulic buffer rod and a hydraulic cylinder, the movable end of the hydraulic buffer rod is fixedly connected to the rear baffle, the bottom of the rear baffle is provided with an auxiliary baffle, the auxiliary baffle has a guard column, the guard column has a cylindrical structure, the bottom of the guard column has a truncated cone structure, the top of the guard column is coaxially provided with a connecting column, and the top surface of the connecting column is fixedly connected with a first spring member.

[0003] The above-mentioned automobile impact buffer buffers the impact encountered by the vehicle by arranging and setting a number of buffer components. However, its buffer component can only buffer the frontal impact force, and the buffering strength and stroke are limited. When the new energy vehicle collides with objects such as piers at high speed, the strong impact force will damage the vehicle frame, exceed the buffering stroke of the buffer component, and invade the battery compartment of the vehicle, thereby causing the battery compartment to be damaged and catch fire, which is very likely to endanger people's lives.

[0004] For this reason, a car impact buffer is proposed. Summary of the invention

[0005] In order to overcome the deficiencies of the prior art, the present invention provides an automobile impact buffer.

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions: including a load-bearing frame, the load-bearing frame includes a crossbeam and a longitudinal beam, a buffer frame plate is installed on the longitudinal beam of the load-bearing frame, a first-level buffer component for buffering the inner side of the crossbeam is arranged on the outer side of the buffer frame plate, a second-level buffer component is arranged on the inner side of the buffer frame plate, the supporting strength of the second-level buffer component is greater than that of the first-level buffer component, and the second-level buffer component is used to buffer the impact force that exceeds the buffering stroke of the first-level buffer component.

[0007] Two groups of lateral buffer components are arranged on the longitudinal beam of the load-bearing frame for buffering the side of the impact object penetrating the cross beam, and the two groups of lateral buffer components are arranged opposite to each other in the up-down and left-right directions.

[0008] The lateral buffer assembly includes a travel support plate, which is installed on the load-bearing frame and located on the inner side of the buffer frame plate. A slide groove and a guide rail are provided in the middle of the travel support plate, and a travel slider is slidably installed on the guide rail. A plurality of slots connected to the slide groove are arranged on the travel slider, and a liquid flow groove is provided between adjacent slots. The liquid flow groove connects two adjacent slots end to end. A liquid injection groove connected to the slots at corresponding positions is provided on one side of the travel support plate, and a push pin is sleeved in the slot. A side of the push pin corresponding to the slide groove is a curved surface, and the wall surface of the travel slider corresponding to the push pins on both sides is also a curved surface. A connecting column is connected to the travel slider, and a sealing cover plate is connected to the travel support plate. The sealing cover plate is provided with a through hole for the sliding of the connecting column and a pipe mouth connected to the liquid injection groove. A group of side buffer plates is installed on the connecting column, and the number of a group of side buffer plates is two and they are respectively located on the upper and lower sides of the buffer frame plate.

[0009] A driving assembly for driving the traveling slider to move is arranged on the inner side of the traveling support plate, and a three-level buffer assembly is also arranged on the side buffer plate.

[0010] As a preferred technical solution of the present invention, the primary buffer assembly includes at least three front buffers, and a plurality of the front buffers are installed at equal intervals on the outside of the buffer frame and abut against the load-bearing frame.

[0011] As a preferred technical solution of the present invention, the secondary buffer assembly includes an energy absorption box, through holes are opened on the buffer frame plate corresponding to the positions of the several pre-buffers, and a mounting plate is sleeved in the through holes, the front buffers are installed on the mounting plate, the positions on the inner side of the buffer frame plate corresponding to the several pre-buffers are connected to the energy absorption box, a crushing energy absorbing structure is installed inside the energy absorption box, the crushing energy absorbing structure is connected to the mounting plate, and the buffering strength of the crushing energy absorbing structure is greater than the buffering strength of the pre-buffer.

[0012] As a preferred technical solution of the present invention, the driving assembly includes an injection piston assembly, which is connected to the inner side of the traveling support plate. The injection piston assembly includes a piston cylinder, a piston and a plug rod. The piston is sleeved in the piston cylinder. The injection piston assembly is filled with a medium. A telescopic device for advancing the piston is installed on the injection piston assembly. The telescopic device is connected to the plug rod. The end of the injection piston assembly is connected and connected to an infusion tube. The free ends of the two infusion tubes are respectively connected and connected to the injection grooves of the two lateral buffer assemblies. A detection sensor for detecting the movement of the mounting plate is installed on the inner side of the energy absorption box. A protective cover for protecting the detection sensor is installed in the energy absorption box.

[0013] As a preferred technical solution of the present invention, a normally closed solenoid valve is installed on the infusion tube, a sleeve is connected to the side buffer plate corresponding to the side of the connecting column, the sleeve cover is arranged on the connecting column, a sliding hole is opened on one side of the sleeve, a limit pin sleeved in the sliding hole is connected to the connecting column, a pressure sensor is installed on the side of the connecting column corresponding to the moving direction of the sleeve, the pressure sensor is in contact with the sleeve, a propulsion spring is connected between the piston in the injection piston assembly and the piston cylinder, and the propulsion spring is in an energy storage state.

[0014] As a preferred technical solution of the present invention, the corresponding surfaces of the two side buffer plates on the same side are respectively provided with adjustment grooves and connected with pins, guide rails are installed in the adjustment grooves and are slidably connected with the pins on the corresponding sides, and resistance members are arranged in the adjustment grooves.

[0015] As a preferred technical solution of the present invention, the three-stage buffer assembly includes a laminating frame, a groove is opened on one side corresponding to the center of the side buffer plate, and a laminating frame is arranged in the groove, a hole is opened on one side corresponding to the center of the laminating frame and a plurality of buffer rollers are rotatably installed, a plurality of cams are arranged in a ring in the middle of the buffer roller, and a buffer piston assembly 1 is installed at the position corresponding to the plurality of buffer rollers on the inner side wall of the laminating frame, the buffer piston assembly 1 is composed of a piston cylinder, a piston and a plug rod, and the outer end of the plug rod of the buffer piston assembly 1 abuts against the middle of the buffer roller, a side buffer is installed in the laminating frame, and a buffer piston assembly 2 is also installed in the laminating frame, the buffer piston assembly 2 is composed of a piston cylinder, a piston and a plug rod, and the plug rod of the buffer piston assembly 2 is in the same direction and connected to the telescopic end of the side buffer, and the plurality of buffer piston assemblies 1 are all connected and communicated with a transmission pipe, the free end of the transmission pipe is connected and communicated with the buffer piston assembly 2, and the buffer piston assembly 1 is filled with a medium.

[0016] As a preferred technical solution of the present invention, a guide wheel is rotatably installed at the outer end of the side buffer plate, the guide wheel protrudes from one side of the corresponding center of the side buffer plate, and gear teeth are provided in the middle of the guide wheel. A driven gear is rotatably installed in the side buffer plate, and the driven gear is meshed with the gear teeth. The upper and lower ends of the driven gear are connected with connecting plates, and the connecting plates are connected to the bonding frame. A number of buffer rollers are arranged obliquely, and the inclination angle of the arrangement is consistent with the angle corresponding to the gear teeth and the center of the driven gear.

[0017] Compared with the prior art, the present invention can achieve the following beneficial effects:

[0018] 1. Through the setting of the lateral buffer component, when the vehicle collides with an object and the object penetrates into the vehicle body through the crossbeam of the load-bearing frame, it can automatically start to clamp the object from both sides, expand the buffer contact surface with the object, and thus improve the buffer effect, avoiding major accidents such as objects invading the battery compartment and causing fire.

[0019] 2. After the buffer roller collides with the object, the movement of the object is used to generate rotation, and the side buffer is driven to continuously operate to do work during the rotation. While buffering and reducing the impact force, it avoids the problem of hard contact causing wear of the buffer roller and other structures and making it unable to buffer, thereby extending the buffer period and improving the buffer effect.

[0020] 3. Through the setting of the guide wheel, the guide wheel contacts the object before the buffer roller, and drives the fitting frame to rotate and extend with the help of the movement of the object, so that the buffer roller can adapt to the side angle of the object and adjust to a fixed angle to ensure that the object fully contacts several buffer rollers and achieve the best buffering effect. Through the inclined arrangement of several buffer rollers, several buffer rollers can achieve the effect of rotating with the guide wheel as the axis, so as to fit the object at the same time.

[0021] 4. Through the pressure sensor's detection of pressure, the side buffer plate can be appropriately expanded according to the pressure. When a conical object invades the interior of the car, the impact force is transferred to the side buffer plate and other structures to avoid damage to the structure and increase vibration, and extend the buffer period.

[0022] 5. By setting up the traveling support plate, a number of push pins are extended in sequence to push the traveling slider to move, so that the traveling slider can be moved from one side to the other side, expanding the moving range and avoiding the problem that traditional telescopic equipment needs to occupy lateral space. When an object invades the vehicle from one side or the center, the side buffer plate can move to the corresponding position for lateral buffering.

[0023] 6. Through the setting of the first and second level buffer components, it is possible to buffer impact forces of different degrees, and combines the advantages of two buffering methods. When dealing with small impacts, the resettable first level buffer component is used for buffering, so as to ensure long-term buffering. When dealing with large impacts, the second level buffer component is used to avoid situations where the buffer exceeds the buffering stroke, the instantaneous kinetic energy is too large to be buffered, etc., to ensure the realization of the buffering effect.

[0024] 7. When the side buffer plate that is not connected to the connecting column contacts the object in advance, the side buffer plate connected to the connecting column can continue to move to contact the object by sliding the pin in the adjustment groove, thereby ensuring the effect of applying pressure to the contact object and being able to adapt to objects of different upper and lower widths to maintain contact and buffer.

[0025] 8. When the vehicle encounters a power failure due to a collision, the normally closed solenoid valve loses power and becomes normally open. The thrust spring pulls the piston of the injection piston assembly to press the medium out to implement the lateral buffering function, and uses elastic force to apply pressure to make the buffer roller contact the object that invades the vehicle, thereby ensuring the realization of the buffering function and improving the protection effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the top structure of the present invention;

[0027] Figure 2 It is a front structural schematic diagram of the present invention after the load-bearing frame is separated;

[0028] Figure 3 It is a schematic diagram of the separation structure of the side buffer plate and the travel support plate of the present invention;

[0029] Figure 4 It is a schematic diagram of the top structure of the traveling support plate of the present invention;

[0030] Figure 5 It is a cross-sectional structural schematic diagram of the laminating frame of the present invention;

[0031] Figure 6 It is a schematic cross-sectional view of the energy absorption box of the present invention;

[0032] Figure 7 It is a cross-sectional structural schematic diagram of the liquid injection piston assembly of the present invention;

[0033] Figure 8 It is a schematic cross-sectional structural diagram of the buffer piston assembly 1 and the buffer piston assembly 2 of the present invention.

[0034] Among them: 10, load-bearing frame; 11, buffer frame plate; 12, travel support plate; 13, travel slider; 14, liquid flow groove; 15, injection groove; 16, push pin; 17, connecting column; 18, sealing cover plate; 19, side buffer plate; 20, front buffer; 21, energy absorption box; 22, crushing energy absorption structure; 23, mounting plate; 24, injection piston assembly; 25, telescopic device; 26, infusion tube; 27, normally closed solenoid valve; 2 8. Detection sensor; 29. ​​Sleeve; 30. Limit pin; 31. Pressure sensor; 32. Propulsion spring; 33. Lamination frame; 34. Buffer roller; 35. Cam; 36. Buffer piston assembly 1; 37. Side buffer; 38. Buffer piston assembly 2; 39. Transmission tube; 40. Adjustment groove; 41. Latch; 42. Resistance spring; 43. Guide wheel; 44. Gear teeth; 45. Driven gear; 46. Connecting plate; 47. Slot. DETAILED DESCRIPTION

[0035] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can be obtained from commercial channels.

[0036] Embodiment: Figure 1-8 As shown, a car impact buffer includes a load-bearing frame 10, and the load-bearing frame 10 includes a crossbeam and a longitudinal beam. It should be noted that the longitudinal beam connected to the crossbeam uses an energy-absorbing bracket. The energy-absorbing bracket is an existing well-known technology and is not described here. A buffer frame plate 11 is installed on the longitudinal beam of the load-bearing frame 10. A primary buffer component for buffering the inner side of the crossbeam is arranged on the outer side of the buffer frame plate 11, and a secondary buffer component is arranged on the inner side of the buffer frame plate 11. The supporting strength of the secondary buffer component is greater than that of the primary buffer component. The secondary buffer component is used to buffer the impact force that exceeds the buffering stroke of the primary buffer component.

[0037] Two groups of lateral buffer components are arranged on the longitudinal beam of the load-bearing frame 10 for buffering the side of the impact object penetrating the cross beam, and the two groups of lateral buffer components are arranged opposite to each other in the up-down and left-right directions.

[0038] The lateral buffer assembly includes a travel support plate 12, which is mounted on the load-bearing frame 10 and located on the inner side of the buffer frame plate 11. A slide groove and a guide rail are provided in the middle of the travel support plate 12, and a travel slider 13 is slidably installed on the guide rail. A plurality of slots 47 connected to the slide groove are arranged on the travel slider 13, and an S-shaped liquid flow groove 14 is provided between adjacent slots 47. The liquid flow groove 14 connects two adjacent slots 47 end to end. A liquid injection groove 15 connected to the slot 47 at the corresponding position is provided on one side of the travel support plate 12, and a T-shaped propulsion pin 16 is sleeved in the slot 47. The propulsion pin 16 has a curved surface on one side corresponding to the slide groove. The wall surfaces of the thrust pins 16 on both sides corresponding to 13 are also curved surfaces. A connecting column 17 is connected to the traveling slider 13, and a sealing cover plate 18 is connected to the traveling support plate 12. The sealing cover plate 18 is connected to a sealing strip that seals the liquid flow groove 14, the liquid injection groove 15 and the slot 47. The sealing cover plate 18 is provided with a through hole for the sliding of the connecting column 17 and a pipe mouth connected to the liquid injection groove 15. A group of side buffer plates 19 are installed on the connecting column 17. The number of the side buffer plates 19 in a group is two and they are respectively located on the upper and lower sides of the buffer frame plate 11. It should be noted that magnets that attract each other are provided in the longitudinal beam of the load-bearing frame 10 and the side buffer plates 19 to limit the side buffer plates 19.

[0039] A driving assembly for driving the traveling slider 13 to move is arranged on the inner side of the traveling support plate 12 , and a three-level buffer assembly is also arranged on the side buffer plate 19 .

[0040] like Figure 1 and Figure 6 As shown, the primary buffer assembly includes five front buffers 20 , and the front buffers 20 are installed at equal intervals on the outside of the buffer frame plate 11 and abut against the load-bearing frame 10 .

[0041] The secondary buffer assembly includes an energy absorption box 21. Through holes are opened at positions corresponding to the plurality of pre-buffers 20 on the buffer frame plate 11, and mounting plates 23 are sleeved in the through holes. The pre-buffers 20 are installed on the mounting plate 23. Positions corresponding to the plurality of pre-buffers 20 on the inner side of the buffer frame plate 11 are connected to the energy absorption box 21. A crushing energy absorption structure 22 is installed inside the energy absorption box 21. The crushing energy absorption structure 22 is connected to the mounting plate 23. The buffering strength of the crushing energy absorption structure 22 is greater than the buffering strength of the pre-buffer 20. The crushing energy absorption structure 22 is an existing well-known technology, including a plurality of crushing components connected end to end. When subjected to a large impact force, it can absorb energy through its own deformation and destruction, thereby achieving the effect of buffering the large impact force. The material can be cast iron or ceramic, which will not be elaborated here.

[0042] like Figure 3 and Figure 7 As shown, the driving assembly includes an injection piston assembly 24, which is connected to the inner side of the traveling support plate 12. The injection piston assembly 24 includes a piston cylinder, a piston and a plug rod. The piston is sleeved in the piston cylinder, and the plug rod is connected to the piston and passes through the piston cylinder. The structure and function of the piston assembly are existing common technologies and are not elaborated here. The injection piston assembly 24 is filled with a medium, which is specifically hydraulic oil. A telescopic device 25 for advancing the piston is installed on the injection piston assembly 24, and the telescopic device 25 is connected to the plug rod. The end of the injection piston assembly 24 is connected and communicated with an infusion tube 26, and the free ends of the two infusion tubes 26 are respectively connected and communicated with the injection grooves 15 of the two lateral buffer assemblies. A detection sensor 28 for detecting the movement of the mounting plate 23 is installed on the inner side of the energy absorption box 21, and a protective cover for protecting the detection sensor 28 is installed in the energy absorption box 21.

[0043] A normally closed solenoid valve 27 is installed on the infusion tube 26. The normally closed solenoid valve 27 is a well-known technology. When power is turned on, it is in a state of closing the infusion tube 26. It will not be elaborated here. A sleeve 29 is connected to the side buffer plate 19 corresponding to the side of the connecting column 17. The sleeve 29 is covered on the connecting column 17. A sliding hole is opened on one side of the sleeve 29. A limit pin 30 sleeved on the sliding hole is connected to the connecting column 17. A pressure sensor 31 is installed on the side of the connecting column 17 corresponding to the moving direction of the sleeve 29. The pressure sensor 31 is in contact with the sleeve 29. A propulsion spring 32 is connected between the piston and the piston cylinder in the injection piston assembly 24, and the propulsion spring 32 is in an energy storage state.

[0044] like Figure 5 As shown, the corresponding surfaces of the two side buffer plates 19 on the same side are respectively provided with adjustment grooves 40 and connected with pins 41, guide rails are installed in the adjustment grooves 40 and are slidably connected with the pins 41 on the corresponding sides, and resistance members are arranged in the adjustment grooves 40, which are specifically resistance springs 42 with relatively large elastic force.

[0045] like Figure 2 , Figure 5 and Figure 8 As shown, the three-stage buffer assembly includes a laminating frame 33, a groove is opened on one side corresponding to the center of the side buffer plate 19, and the laminating frame 33 is arranged in the groove, a hole is opened on one side corresponding to the center of the laminating frame 33 and a plurality of buffer rollers 34 are rotatably installed, the buffer rollers 34 are in an I-shape and a plurality of cams 35 are arranged in a ring shape in the middle, and a buffer piston assembly 36 is installed at the positions corresponding to the plurality of buffer rollers 34 on the inner side wall of the laminating frame 33, and the buffer piston assembly 36 is also composed of a piston cylinder, a piston and a plug rod, and the outer end of the plug rod of the buffer piston assembly 36 is curved And it abuts against the middle part of the buffer roller 34. A side buffer 37 is installed in the laminating frame 33. A buffer piston assembly 2 38 is also installed in the laminating frame 33. The buffer piston assembly 2 38 is also composed of a piston cylinder, a piston and a plug rod. The plug rod of the buffer piston assembly 2 38 is in the same direction and connected to the telescopic end of the side buffer 37. Several buffer piston assemblies 1 36 are connected and communicated with a transmission pipe 39. The free end of the transmission pipe 39 is connected and communicated with the buffer piston assembly 2 38, and the buffer piston assembly 1 36 is filled with a medium, which is specifically hydraulic oil.

[0046] A guide wheel 43 is rotatably installed at the outer end of the side buffer plate 19. The guide wheel 43 protrudes from one side of the corresponding center of the side buffer plate 19. A gear tooth 44 is provided in the middle of the guide wheel 43. A driven gear 45 is rotatably installed inside the side buffer plate 19. The driven gear 45 meshes with the gear tooth 44. The upper and lower ends of the driven gear 45 are connected to connecting plates 46, and the connecting plates 46 are connected to the laminating frame 33. A plurality of buffer rollers 34 are arranged obliquely, and the inclination angle of the arrangement is consistent with the angle corresponding to the center of the gear tooth 44 and the driven gear 45.

[0047] It should be noted that, in order to demonstrate the structural features, this embodiment sets a larger structural size and adopts a larger volume of equipment. In actual use, the structural size can be adjusted according to the vehicle use space, which does not affect the implementation of the structural function of this embodiment.

[0048] Working principle:

[0049] Before use: the side buffer plate 19 is adsorbed by a magnet on the longitudinal beam of the load-bearing frame 10 for limiting, and the telescopic device 25, the normally closed solenoid valve 27, the detection sensor 28 and the pressure sensor 31 are connected to the vehicle's power and control system.

[0050] When in use: First, when a small impact occurs, the front buffer 20 drives the piston to squeeze the oil to do work through the telescopic end, thereby absorbing the impact force to achieve the purpose of buffering.

[0051] In the second step, when the impact force is too large and exceeds the buffer stroke of the front buffer 20, the front buffer 20 is pushed to slide into the energy absorption box 21, and the broken energy absorption structure 22 is deformed and broken by the force and absorbs the impact force, thereby reducing the impact force. At this time, the detection sensor 28 detects the movement of the mounting plate 23, drives the normally closed solenoid valve 27 to open the infusion tube 26, and the telescopic device 25 pushes the piston to squeeze the medium in the injection piston assembly 24, and injects the medium into the injection tank 15 through the infusion tank 26. The medium is injected into the slot 47 through the injection tank 15, and pressure is applied to push the push pin 16 out, and the push pin 16 is pushed out. After contacting the curved surface of the traveling slider 13, the traveling slider 13 is pushed to slide. After the push pin 16 slides to the limit, the orifice of the liquid flow groove 14 connected to the slot 47 is opened, and the medium is injected into the next slot 47 through the liquid flow groove 14, and the traveling slider 13 continues to slide. The traveling slider 13 drives the side buffer plate 19 to slide through the connecting column 17 until it contacts the side of the object that breaks through the crossbeam of the load-bearing frame 10. At this time, the guide wheel 43 first contacts the object, and the guide wheel 43 is driven to rotate by the object in contact. When the guide wheel 43 rotates, it drives the bonding frame 33 from the side buffer plate through the meshing with the driven gear 45. The punch plate 19 is rotated out until a plurality of buffer rollers 34 hit the side of the object. Then, when the object invades the battery compartment of the vehicle, the buffer roller 34 rotates by hitting the object. When the buffer roller 34 rotates until the cam 35 hits the plug rod of the buffer piston assembly 1 36, the curved surface is used to apply pressure to the plug rod of the buffer piston assembly 1 36, so that the piston injects the medium in the buffer piston assembly 1 36 into the buffer piston assembly 2 38 through the transmission pipe 39. The piston in the buffer piston assembly 2 38 is driven by the medium to drive the plug rod to drive the telescopic shaft of the side buffer 37 to slide and do work. When the wheel 34 rotates until the cam 35 is away from the plug rod of the buffer piston assembly 36, the telescopic end of the side buffer 37 rebounds and resets, and by pushing the plug rod of the buffer piston assembly 38, the piston of the buffer piston assembly 38 presses the injected hydraulic oil back into the buffer piston assembly 36, pushing the plug rod of the buffer piston assembly 36 to reset, completing a working cycle. Therefore, during the intrusion of an object, the side buffer roller 34 rotates and works to produce a buffering effect on the side of the object, further buffering the impact force of the object, avoiding damage to the structure caused by hard contact, and extending the buffering period.

[0052] In the third step, when the side buffer plate 19 that is not connected to the connecting column 17 contacts the object in advance, the side buffer plate 19 connected to the connecting column 17 continues to move to contact the object through the sliding of the pin 41 in the adjustment groove 40, thereby ensuring the effect of applying pressure to the contact object and being able to adapt to objects of different upper and lower widths to maintain contact for buffering.

[0053] In the fourth step, when a conical object invades the interior of the car, the buffer roller 34 attached to the object will be subjected to an outward expansion force as the object invades, and the expansion force will act on the pressure sensor 31 through the sleeve 29. When the pressure sensor 31 senses that the pressure exceeds the threshold, it drives the transmission shaft of the telescopic device 25 to move back. At this time, the space inside the injection piston assembly 24 expands, and the traveling slider 13 can push the push pin 16 to retract through external force to inject the medium back into the injection piston assembly 24, and drive the connecting column 17 to expand outward for a certain distance, so as to avoid excessive resistance pressure and transfer the impact force to the side buffer plate 19 and other structures, thereby avoiding damage to the structure and increased vibration, and extending the buffer period.

[0054] In the fifth step, when the vehicle encounters a power failure due to a collision, the normally closed solenoid valve 27 loses power and becomes normally open, and the thrust spring 32 pulls the piston of the injection piston assembly 24 to press the medium out to implement the lateral buffering function, and uses elastic force to apply pressure to make the buffer roller 34 contact the object that invades the vehicle.

[0055] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. An automobile impact buffer, comprising a load-bearing frame (10), the load-bearing frame (10) comprising a crossbeam and a longitudinal beam, characterized in that: A buffer frame (11) is installed on the longitudinal beam of the load-bearing frame (10), a primary buffer assembly for buffering the inner side of the cross beam is arranged on the outer side of the buffer frame (11), and a secondary buffer assembly is arranged on the inner side of the buffer frame (11), the support strength of the secondary buffer assembly is greater than that of the primary buffer assembly, and the secondary buffer assembly is used to buffer the impact force that exceeds the buffer stroke of the primary buffer assembly; Two sets of lateral buffer components are provided on the longitudinal beams of the load-bearing frame (10) for buffering the sides of the impacting object penetrating the cross beams, and the two sets of lateral buffer components are arranged in opposite directions in the vertical and left-right directions; The lateral buffer assembly includes a travel support plate (12), which is mounted on the load-bearing frame (10) and located on the inner side of the buffer frame plate (11). A slide groove and a guide rail are provided in the middle of the travel support plate (12). A travel slider (13) is slidably mounted on the guide rail. A plurality of slots (47) connected to the slide groove are arranged on the travel slider (13). A liquid flow groove (14) is provided between adjacent slots (47). The liquid flow groove (14) connects two adjacent slots (47) end to end. A liquid injection groove (15) connected to the slots (47) at corresponding positions is provided on one side of the travel support plate (12). , a push pin (16) is sleeved in the slot (47), and a side of the push pin (16) corresponding to the slide groove is a curved surface, and the wall surface of the moving slider (13) corresponding to the push pins (16) on both sides is also a curved surface, and the moving slider (13) is connected to a connecting column (17), and the moving support plate (12) is connected to a sealing cover plate (18), and the sealing cover plate (18) is provided with a through hole for sliding the connecting column (17) and a pipe mouth connected to the injection groove (15), and a group of side buffer plates (19) are installed on the connecting column (17), and the number of the group of side buffer plates (19) is two and they are respectively located on the upper and lower sides of the buffer frame plate (11); A driving assembly for driving the traveling slider (13) to move is provided on the inner side of the traveling support plate (12), and a three-level buffer assembly is also provided on the side buffer plate (19).

2. The automobile impact buffer according to claim 1, characterized in that: The primary buffer assembly includes at least three front buffers (20), and the plurality of front buffers (20) are installed at equal intervals on the outside of the buffer frame plate (11) and abut against the load-bearing frame (10).

3. The automobile impact buffer according to claim 2, characterized in that: The secondary buffer assembly comprises an energy absorption box (21); positions on the buffer frame plate (11) corresponding to the plurality of pre-buffers (20) are all provided with through holes, and a mounting plate (23) is sleeved in the through holes; the pre-buffers (20) are mounted on the mounting plate (23); positions on the inner side of the buffer frame plate (11) corresponding to the plurality of pre-buffers (20) are all connected to the energy absorption box (21); a crushing energy absorption structure (22) is installed inside the energy absorption box (21); the crushing energy absorption structure (22) is connected to the mounting plate (23); and the buffering strength of the crushing energy absorption structure (22) is greater than the buffering strength of the pre-buffer (20).

4. The automobile impact buffer according to claim 3, characterized in that: The driving assembly includes a liquid injection piston assembly (24), the liquid injection piston assembly (24) is connected to the inner side of the travel support plate (12), the liquid injection piston assembly (24) includes a piston cylinder, a piston and a plug rod, the piston is sleeved in the piston cylinder, the liquid injection piston assembly (24) is filled with a medium, a telescopic device (25) for advancing the piston is installed on the liquid injection piston assembly (24), the telescopic device (25) is connected to the plug rod, the end of the liquid injection piston assembly (24) is connected to and communicated with an infusion tube (26), the free ends of the two infusion tubes (26) are respectively connected to and communicated with the liquid injection grooves (15) of the two lateral buffer assemblies, a detection sensor (28) for detecting the movement of the mounting plate (23) is installed on the inner side of the energy absorption box (21), and a protective cover for protecting the detection sensor (28) is installed in the energy absorption box (21).

5. The automobile impact buffer according to claim 4, characterized in that: A normally closed electromagnetic valve (27) is installed on the infusion tube (26), and a sleeve (29) is connected to the side buffer plate (19) corresponding to one side of the connecting column (17). The sleeve (29) is covered on the connecting column (17), and a sliding hole is opened on one side of the sleeve (29). A limit pin (30) sleeved on the sliding hole is connected to the connecting column (17). A pressure sensor (31) is installed on the side of the connecting column (17) corresponding to the moving direction of the sleeve (29). The pressure sensor (31) contacts the sleeve (29). A propulsion spring (32) is connected between the piston and the piston cylinder in the injection piston assembly (24), and the propulsion spring (32) is in an energy storage state.

6. The automobile impact buffer according to claim 3, characterized in that: The corresponding surfaces of the two side buffer plates (19) on the same side are respectively provided with adjustment grooves (40) and connected with latches (41); a guide rail is installed in the adjustment groove (40) and is slidably connected with the latches (41) on the corresponding sides; and a resistance member is provided in the adjustment groove (40).

7. The automobile impact buffer according to claim 6, characterized in that: The three-stage buffer assembly includes a laminating frame (33), a groove is provided on one side of the side buffer plate (19) corresponding to the center, and a laminating frame (33) is arranged in the groove, a hole is opened on one side of the laminating frame (33) corresponding to the center and a plurality of buffer rollers (34) are rotatably installed, a plurality of cams (35) are provided in the middle of the buffer rollers (34) in an annular shape, and a buffer piston assembly (36) is installed at the position corresponding to the plurality of buffer rollers (34) on the inner side wall of the laminating frame (33), and the buffer piston assembly (36) is composed of a piston cylinder, a piston and a plug rod, and the outer end of the plug rod of the buffer piston assembly (36) abuts against the piston cylinder. The bonding frame (33) is provided with a side buffer (37) and a buffer piston assembly (38) which is installed in the bonding frame (33). The buffer piston assembly (38) is composed of a piston cylinder, a piston and a plug rod. The plug rod of the buffer piston assembly (38) is connected to the telescopic end of the side buffer (37) in the same direction. A plurality of buffer piston assemblies (36) are connected and communicated with a transmission pipe (39). The free end of the transmission pipe (39) is connected and communicated with the buffer piston assembly (38), and the buffer piston assembly (36) is filled with a medium.

8. The automobile impact buffer according to claim 7, characterized in that: The outer end of the side buffer plate (19) is rotatably mounted with a guide wheel (43), the guide wheel (43) protruding from one side of the corresponding center of the side buffer plate (19), a gear tooth (44) is provided in the middle of the guide wheel (43), a driven gear (45) is rotatably mounted inside the side buffer plate (19), the driven gear (45) is meshed with the gear tooth (44), the upper and lower ends of the driven gear (45) are connected with a connecting plate (46), the connecting plate (46) is connected to the laminating frame (33), and a plurality of buffer rollers (34) are arranged in an inclined manner, and the inclination angle of the arrangement is consistent with the angle corresponding to the center of the gear tooth (44) and the driven gear (45).

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