Automobile seat ejection system and control method thereof

Abstract

The application provides a car seat ejection system and a control method thereof, wherein the system comprises a hydraulic drive assembly, a generator, a controller and a magnet block; the hydraulic drive assembly comprises a hydraulic push rod, a conduit, an impeller machine, a hydraulic cylinder and a piston; the hydraulic cylinder is arranged in a cavity of a front longitudinal beam of the vehicle; one end of the hydraulic push rod is connected with the piston, and the other end of the hydraulic push rod extends to the front end of the cavity; two ends of the conduit are connected with the front end and the rear end of the hydraulic cylinder respectively; the impeller machine is arranged on the conduit and is used for driving the generator to work; the magnet block is arranged at the bottom of a mounting seat of a front seat in the vehicle; a longitudinal sliding groove is arranged on the vehicle floor and is used for sliding of the magnet block along the longitudinal direction of the vehicle; the magnet block is located in the front section of the longitudinal sliding groove; an electromagnet is arranged in the middle section and the rear section of the longitudinal sliding groove; and the controller is used for controlling whether the vehicle storage battery supplies power to the electromagnet close to the magnet block and whether the generator supplies power to each electromagnet. The application can improve the safety of passengers when the vehicle is in collision.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of vehicle active safety technology, and particularly relates to an automobile seat ejection system and a control method thereof. BACKGROUND

[0002] With the development of society, people pay more and more attention to the safety of automobiles, and require that the automobile can withstand strict frontal collision and side collision, so as to ensure the safety of drivers and passengers. In the process of using the automobile, the most likely to occur is the frontal collision. In order to ensure the safety of the people in the car, the front beam of the car body needs to have a certain energy absorption effect to absorb the energy transmitted by the frontal collision, and also needs to have sufficient rigidity to avoid crushing the front wall and the front windshield in the collision, thereby causing harm to the people in the car. However, with the popularization of electric vehicles, the unladen mass of the vehicle is getting larger and larger, while the steel used for the automobile has not had a revolutionary breakthrough, resulting in that the energy absorption effect of the front space of the vehicle is insufficient, and the injury of the passengers in the electric vehicle is more serious under the same speed collision.

[0003] The prior art mainly uses higher strength steel plates, aluminum alloys and other means for the collision components to improve the energy absorption of the front part of the vehicle, so as to ensure the integrity of the passenger compartment and the safety of the passengers, but the improvement of the energy absorption is limited, because the strength of the collision components has reached the limit, and the plasticity of the higher strength material is seriously reduced, which is easy to break and fail, resulting in that the safety of the passengers in the collision is not improved much. Therefore, how to design an automobile seat ejection system and a control method thereof to improve the safety of the passengers has become a technical problem that needs to be solved by the technical personnel in the field. SUMMARY

[0004] The purpose of the present application is to provide an automobile seat ejection system to solve the above technical problems in the prior art. Another purpose of the present application is to provide a control method of the automobile seat ejection system.

[0005] To achieve the above purpose, the present application provides the following technical solutions:

[0006] An ejection system for a car seat includes a hydraulic drive assembly, a generator, a controller, and a magnet. The hydraulic drive assembly includes a hydraulic push rod, a guide tube, an impeller, a hydraulic cylinder, and a piston disposed within the hydraulic cylinder. The hydraulic cylinder is disposed within a cavity of the front longitudinal beam of the vehicle. One end of the hydraulic push rod is connected to the piston, and the other end of the hydraulic push rod extends through the hydraulic cylinder to a front end near the cavity. One end of the guide tube is connected to the front end of the hydraulic cylinder, and the other end of the guide tube is connected to the rear end of the hydraulic cylinder. The impeller is disposed on the guide tube and is used to drive the generator. The magnet is disposed at the bottom of the mounting base of the front seat in the vehicle. A longitudinal groove is provided on the vehicle floor for the magnet to slide along the longitudinal direction of the vehicle. The magnet is located in the front section of the longitudinal groove, and electromagnets are disposed in the middle and rear sections of the longitudinal groove. The controller is used to control whether the vehicle battery supplies power to the electromagnets in the middle section near the magnet, and also to control whether the generator supplies power to each of the electromagnets.

[0007] Preferably, a push plate is vertically disposed at the end of the hydraulic push rod away from the hydraulic cylinder.

[0008] Preferably, the hydraulic push rod is connected to the middle position of the push plate.

[0009] Preferably, the mounting base includes a vertical rod and an inclined rod, the upper end of the inclined rod being connected to the rear side of the vertical rod, and the lower end of the inclined rod being connected to the magnet block in the longitudinal groove.

[0010] Preferably, the number of electromagnets provided in the middle section is at least two, and each electromagnet is evenly distributed in the extension direction of the middle section.

[0011] Preferably, the number of electromagnets provided in the rear section is at least two, and each electromagnet is evenly distributed in the extension direction of the rear section.

[0012] Preferably, the longitudinal groove is a cylindrical groove with an elongated opening at the top, and a plurality of electromagnets are uniformly arranged on the circumferential inner wall of the middle and rear sections of the longitudinal groove.

[0013] A control method based on the above-described automotive seat ejection system, comprising:

[0014] When the vehicle is in normal operation, the controller controls the vehicle battery to supply power to the electromagnet near the magnet block in the middle section, so that the polarity of the front end of the electromagnet near the magnet block is the same as the polarity of the rear end of the magnet block, so as to use the repulsive force between the electromagnet and the magnet block to prevent the magnet block from sliding backward along the longitudinal groove.

[0015] When the vehicle is subjected to a frontal collision, the front end of the vehicle front longitudinal beam collapses backward, the hydraulic push rod pushes the piston to move backward in the hydraulic cylinder, so that the hydraulic oil impacts the blades of the impeller machine when flowing through the impeller machine, drives the impeller machine to operate, thereby driving the generator to generate electricity, the controller controls the generator to supply power to each electromagnet, and the polarity of the front end of the electromagnet is opposite to the polarity of the rear end of the magnet block, so as to utilize the magnetic attraction of the electromagnet to the magnet block to drive the magnet block to move to the rear section of the longitudinal sliding groove, so that the front row seat moves to the rear end of the vehicle.

[0016] The beneficial effects of the present application are that:

[0017] The automobile seat ejection system and the control method thereof can utilize the magnetic attraction of the electromagnet to the magnet block to drive the front row seat to move backward when the vehicle is subjected to a frontal collision, thereby effectively reducing the possibility of the front cabin intrusion causing harm to the passengers, and further improving the safety of the passengers in the collision. BRIEF DESCRIPTION OF DRAWINGS

[0018] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the embodiments will be briefly introduced, and the specific embodiments of the present application will be further described in detail with reference to the drawings, in which

[0019] Figure 1 A schematic view of the hydraulic drive assembly provided in the embodiments of the present application;

[0020] Figure 2 A schematic view of the connection between the impeller machine and the conduit provided in the embodiments of the present application;

[0021] Figure 3 A schematic view of the generator provided in the embodiments of the present application;

[0022] Figure 4 A schematic view of the magnet block installed in the longitudinal sliding groove provided in the embodiments of the present application.

[0023] Markings in the drawings:

[0024] 11, hydraulic push rod, 12, hydraulic cylinder, 13, piston, 14, conduit, 15, impeller machine,

[0025] 16, push plate, 17, blade, 18, rotating shaft;

[0026] 21, vehicle front longitudinal beam, 22, cavity; 31, driving coil, 32, driven coil;

[0027] 41, front row seat, 42, vertical rod, 43, inclined rod, 44, magnet block;

[0028] 51. Vehicle body floor; 52. Longitudinal groove; 61. Electromagnet; 62. Wire. Detailed Implementation

[0029] To enable those skilled in the art to better understand the technical solution of the present invention, the present solution will be further described in detail below with reference to specific embodiments.

[0030] like Figures 1 to 4 As shown, this embodiment of the invention provides an automotive seat ejection system, which includes a hydraulic drive assembly, a generator, a controller, and a magnet 44. The hydraulic drive assembly includes a hydraulic push rod 11, a conduit 14, an impeller 15, a hydraulic cylinder 12, and a piston 13 disposed within the hydraulic cylinder. The hydraulic cylinder is disposed within a cavity 22 of a front longitudinal beam 21 of the vehicle. One end of the hydraulic push rod 11 is connected to the piston 13, and the other end of the hydraulic push rod 11 extends through the hydraulic cylinder to a front end near the cavity. One end of the conduit 14 is connected to the front end of the hydraulic cylinder, and the other end of the conduit is connected to the... The hydraulic cylinder is connected at its rear end; the impeller is mounted on the guide tube, and the impeller 15 is used to drive the generator; the magnet 44 is mounted at the bottom of the mounting base of the front seat 41 in the vehicle, and a longitudinal groove 52 is provided on the vehicle floor 51 for the magnet to slide along the longitudinal direction of the vehicle; the magnet is located in the front section of the longitudinal groove, and electromagnets 61 are provided in the middle and rear sections of the longitudinal groove; the controller is used to control whether the vehicle battery supplies power to the electromagnets near the magnet in the middle section, and also to control whether the generator supplies power to each of the electromagnets.

[0031] The car seat ejection system provided in this embodiment of the invention can use the magnetic attraction of electromagnet 61 to magnet block 44 to move the front seat backward when the vehicle is subjected to a frontal collision, thereby effectively reducing the possibility of injury to the occupants caused by intrusion into the front of the cockpit, and thus improving the safety of the occupants during a collision.

[0032] Furthermore, a push plate 16 is vertically provided at the end of the hydraulic push rod 11 away from the hydraulic cylinder, which can increase the contact area between the hydraulic push rod and the front longitudinal beam when the front end of the vehicle's front longitudinal beam collapses, thus facilitating the hydraulic push rod to push the piston movement in a timely and rapid manner.

[0033] Specifically, the hydraulic push rod is connected to the middle position of the push plate 16, thereby making the force on the hydraulic push rod more uniform.

[0034] Further, the mounting base comprises a vertical rod 42 and an inclined rod 43, the upper end of the inclined rod 43 is connected with the rear side of the vertical rod, and the lower end of the inclined rod is connected with the magnet block in the longitudinal sliding groove, so that the front row seat can be better supported, and the structure of the mounting base is relatively simple. It can be understood that when the magnet block moves backward in the longitudinal sliding groove, the lower end of the vertical rod also moves backward in the longitudinal sliding groove. In an embodiment, the lower end of the vertical rod can also be connected with the magnet block.

[0035] Specifically, the number of electromagnets 61 arranged in the middle section is at least two, and each electromagnet is uniformly distributed in the extension direction of the middle section. By this scheme, the electromagnets at different positions in the vehicle longitudinal direction are sequentially controlled to generate magnetic attraction force on the magnet block, so as to realize the rapid backward movement of the magnet block, thereby realizing the rapid backward movement of the front row seat.

[0036] It can be preferred that the number of electromagnets 61 arranged in the rear section is at least two, and each electromagnet is uniformly distributed in the extension direction of the rear section, so that the electromagnets at different positions in the vehicle longitudinal direction in the rear section are sequentially controlled by the controller to generate magnetic attraction force on the magnet block, so as to further realize the rapid backward movement of the magnet block, thereby realizing the rapid backward movement of the front row seat, and further improving the occupant safety in vehicle collision. It can be understood that the rotating shaft 18 of the impeller machine 15 is coaxially connected with the central axis of the driving coil 31 of the generator; when the driving coil is rotated by the impeller machine, the relative motion between the driving coil 31 and the driven coil 32 is generated, thereby generating alternating current.

[0037] Specifically, the longitudinal sliding groove is a cylindrical sliding groove with a long strip-shaped opening at the upper part, and a plurality of electromagnets are uniformly arranged on the circumferential inner wall of the middle section and the rear section of the longitudinal sliding groove. By this scheme, each electromagnet at the same position in the vehicle longitudinal direction and circumferentially distributed is simultaneously energized by the controller, so as to generate stronger magnetic attraction force on the magnet block, thereby facilitating the rapid backward movement of the magnet block. It can be understood that when the magnet block moves backward in the longitudinal sliding groove, the lower part of the vertical rod and the inclined rod slides backward in the long strip-shaped opening; the extension direction of the long strip-shaped opening is the same as the extension direction of the longitudinal sliding groove; the alternating current generated by the generator is converted into direct current by the converter and then supplied to the electromagnets; the vehicle longitudinal direction is the vehicle body length direction, and the direction from the front to the rear is the front-to-back direction. Each electromagnet at the same position in the vehicle longitudinal direction and circumferentially distributed can be a group, and it can be preferred that the electromagnets arranged in the middle section and the rear section have a total of five to seven groups, and specifically, there can be five groups, such as two groups of electromagnets arranged in the middle section of the longitudinal sliding groove, which are sequentially marked as group A and group B from front to back, and three groups of electromagnets arranged in the rear section, which are sequentially marked as group C, group D and group E from front to back. Figure 4

[0038] ​The application also provides a control method of the automobile seat ejection system.

[0039] When the vehicle is running normally, the controller controls the vehicle storage battery to supply power to the electromagnet close to the magnet block in the middle section (i.e., the electromagnet at the front end of the middle section), so that the polarity of the front end of the electromagnet close to the magnet block is the same as that of the rear end of the magnet block, and the repulsive force between the electromagnet and the magnet block is used to prevent the magnet block from sliding backward along the longitudinal sliding groove, thereby fixing the front seat.

[0040] When the vehicle is subjected to a frontal collision, the front end of the vehicle front longitudinal beam 21 collapses backward, the piston 13 is pushed backward in the hydraulic cylinder 12 by the hydraulic push rod 11, so that the hydraulic oil impacts the blades 17 of the impeller machine 15 when flowing through the impeller machine, drives the rotating shaft 18 of the impeller machine to rotate, thereby driving the generator to generate electricity, the controller controls the vehicle storage battery to stop supplying power to the electromagnet 61 close to the magnet block in the middle section, controls the generator to supply power to each electromagnet, and reverses the polarity of the front end of the electromagnet to the polarity of the rear end of the magnet block, so as to use the magnetic attraction force of the electromagnet on the magnet block to drive the magnet block to move to the rear section of the longitudinal sliding groove, so that the front seat moves to the rear end of the vehicle, thereby reducing the possibility of the front part of the cockpit invading the driver and causing injury.

[0041] The control method of the automobile seat ejection system provided by the application also has the above technical effects.

[0042] Further, when the controller controls the generator to supply power to each electromagnet and reverses the polarity of the front end of the electromagnet to the polarity of the rear end of the magnet block, the electromagnets can be supplied with power from front to rear in the longitudinal direction of the vehicle, and only one electromagnet is powered at the same time.

[0043] Preferably, when the controller controls the generator to stop supplying power to the electromagnet at the front end of the middle section and supply power to the electromagnet behind the electromagnet, the controller controls the vehicle storage battery to supply power to the electromagnet and makes the polarity of the rear end of the electromagnet the same as that of the front end of the magnet block, at this time, the front end of the magnet block moves close to the rear end of the electromagnet, and the repulsive force between the electromagnet and the magnet block and the magnetic attraction force of the electromagnet behind the electromagnet on the magnet block are used to make the magnet block move backward quickly.

[0044] In a specific embodiment, as Figure 4As shown, in the middle section and rear section of the longitudinal sliding slot, there are A group, B group, C group, D group and E group electromagnets from front to rear. When the vehicle is running normally, the controller controls the vehicle battery to supply power to the A group electromagnets (i.e. the electromagnet group located at the front end of the middle section), and makes the polarity of the front end of each electromagnet in the group the same as the polarity of the rear end of the magnet block, so that the repulsive force between the A group electromagnets and the magnet block makes the magnet block unable to slide backward along the longitudinal sliding slot, thereby achieving the fixation of the front row seats.

[0045] When the vehicle is subjected to a frontal collision, the front end of the vehicle front longitudinal beam 21 collapses backward, the piston is pushed to move backward in the hydraulic cylinder by the hydraulic push rod 11, so that the hydraulic oil drives the impeller machine to operate when flowing through the impeller machine, thereby driving the generator to generate electricity. At this time, the controller controls the vehicle battery to stop supplying power to the A group electromagnets, controls the generator to supply power to the A group electromagnets, and makes the polarity of the front end of each electromagnet in the A group electromagnets opposite to the polarity of the rear end of the magnet block, so as to use the magnetic attraction of the A group electromagnets to the magnet block to drive the magnet block to move backward (the front row seats move toward the rear end of the vehicle) and gradually approach the A group electromagnets.

[0046] After a certain time delay, such as 0.04s, at this time the magnet block is located between the A group electromagnets and the B group electromagnets, the controller controls the generator to stop supplying power to the A group electromagnets and to supply power to the B group electromagnets, and makes the polarity of the front end of the B group electromagnets opposite to the polarity of the rear end of the magnet block, while the controller controls the vehicle battery to supply power to the A group electromagnets, so that the polarity of the rear end of the A group electromagnets is the same as the polarity of the front end of the magnet block, so that the magnet block is moved backward by the repulsive force of the A group electromagnets, and at the same time the magnet block is moved backward by the magnetic attraction of the B group electromagnets, thereby realizing the rapid backward movement of the magnet block and the rapid backward movement of the front row seats.

[0047] After a certain time delay, such as 0.02s, the magnet block is located between the B group electromagnets and the C group electromagnets, the controller controls the generator to stop supplying power to the B group electromagnets and to supply power to the C group electromagnets, and makes the polarity of the front end of each electromagnet in the C group electromagnets opposite to the polarity of the rear end of the magnet block, so as to use the magnetic attraction of the electromagnets in the C group to the magnet block to drive the magnet block to continue to move backward, and the front row seats continue to move backward.

[0048] After a certain time delay, such as 0.012s, the magnet block is located between the C group electromagnets and the D group electromagnets, the controller controls the generator to stop supplying power to the C group electromagnets and to supply power to the D group electromagnets, and makes the polarity of the front end of each electromagnet in the D group electromagnets opposite to the polarity of the rear end of the magnet block, so as to use the magnetic attraction of the electromagnets in the D group to the magnet block to drive the magnet block to continue to move backward, and the front row seats continue to move backward.

[0049] After delaying a certain time, such as 0.025 seconds, the magnet block is located between the D group electromagnet and the E group electromagnet, the controller controls the generator to stop supplying power to the D group electromagnet and to supply power to the E group electromagnet, and the polarity of the front end of each electromagnet in the E group is opposite to the polarity of the rear end of the magnet block, the magnetic attraction force of each electromagnet in the E group to the magnet block is used to drive the magnet block to move backward to the rear end of the longitudinal sliding groove, and the front row seat is moved backward to the rear end of the longitudinal sliding groove, so that the passenger has a larger collision energy absorption space in front, thereby effectively improving the safety of the passenger.

[0050] It can be understood that the direction of the current supplied by the generator to the A group electromagnet is opposite to the direction of the current supplied by the on-board storage battery to the A group electromagnet. Figure 1 The arrow in the figure indicates the flow direction of the hydraulic oil; the generator is connected with each electromagnet 61 through a wire 62; control logic can be designed in the controller, so that the first three groups of electromagnets (namely the A group, the B group and the C group electromagnets) are used to accelerate the rear movement of the magnet block, and the last two groups of electromagnets (namely the D group and the E group electromagnets) are used to decelerate the rear movement of the magnet block, so as to ensure that when the magnet block stops at the rear end of the longitudinal sliding groove, the front row seat is subjected to a smaller impact and stops stably; the above five groups of electromagnets are supplied with power by the generator at the same time, so that sufficient voltage can be ensured to quickly move the magnet block backward; the energization time of each group of electromagnets can be different for different vehicle models, and the specific energization time is obtained by the designer through actual calibration.

[0051] When the vehicle is subjected to a frontal collision, the magnet block pulls the front row seat to move backward, thereby creating a larger survival space for the passenger, and better resisting the local deformation of the cockpit; when the steering machine invades, the A column breaks and the like occur on the vehicle, the possibility of injury of the passenger can be effectively reduced.

[0052] The above is only the preferred embodiment of the present application, it should be pointed out that these examples are only used to illustrate the present application and not used to limit the scope of the present application, and after reading the content of the present application, those skilled in the art can make various modifications or changes to the present application, and these equivalent forms also fall within the scope defined by the appended claims of the present application.

Claims

1. A car seat ejection system characterized by, It includes a hydraulic drive assembly, a generator, a controller, a magnet block, the hydraulic drive assembly includes a hydraulic push rod, a conduit, an impeller machine, a hydraulic cylinder and a piston arranged in the hydraulic cylinder, the hydraulic cylinder is arranged in the cavity of the front longitudinal beam of the vehicle, one end of the hydraulic push rod is connected with the piston, the other end of the hydraulic push rod extends out of the hydraulic cylinder to the front end near the cavity; One end of the conduit is connected with the front end of the hydraulic cylinder, the other end of the conduit is connected with the rear end of the hydraulic cylinder; the impeller machine is arranged on the conduit, and the impeller machine is used to drive the generator to work; the magnet block is arranged at the bottom of the mounting seat of the front row seat in the vehicle, and a longitudinal sliding groove for sliding the magnet block along the longitudinal direction of the vehicle is arranged on the floor of the vehicle body; the magnet block is located in the front section of the longitudinal sliding groove, and electromagnets are arranged in the middle section and the rear section of the longitudinal sliding groove; the controller is used to control whether the vehicle-mounted storage battery supplies power to the electromagnet near the magnet block in the middle section, and is also used to control whether the generator supplies power to each electromagnet.

2. The automotive seat ejection system of claim 1, wherein The end of the hydraulic push rod away from the hydraulic cylinder is vertically provided with a push plate.

3. The automotive seat ejection system of claim 2, wherein The hydraulic push rod is connected with the middle part of the push plate.

4. The automotive seat ejection system of claim 1, wherein The mounting seat includes a vertical rod and an inclined rod, the upper end of the inclined rod is connected with the rear side of the vertical rod, and the lower end of the inclined rod is connected with the magnet block in the longitudinal sliding groove.

5. The automotive seat ejection system of claim 1, wherein The number of electromagnets arranged in the middle section is at least two, and each electromagnet is uniformly distributed in the extension direction of the middle section.

6. The automotive seat ejection system of claim 5, wherein, The number of electromagnets arranged in the rear section is at least two, and each electromagnet is uniformly distributed in the extension direction of the rear section.

7. The automotive seat ejection system of claim 1, wherein The longitudinal sliding groove is a cylindrical sliding groove with a long strip-shaped opening in the upper part, and a plurality of electromagnets are uniformly arranged on the circumferential inner wall of the middle section and the rear section of the longitudinal sliding groove.

8. A control method of the automobile seat ejection system according to claim 1, characterized by, It includes: When the vehicle is normally driven, the controller controls the vehicle-mounted storage battery to supply power to the electromagnet near the magnet block in the middle section, so that the polarity of the front end of the electromagnet near the magnet block is the same as that of the rear end of the magnet block, so as to utilize the repulsive force between the electromagnet and the magnet block to prevent the magnet block from sliding backward along the longitudinal sliding groove; When the vehicle is subjected to a frontal collision, the front end of the front longitudinal beam of the vehicle collapses backward, the piston is pushed backward in the hydraulic cylinder through the hydraulic push rod, so that the hydraulic oil impacts the blades of the impeller machine when flowing through the impeller machine, drives the impeller machine to operate, thereby driving the generator to generate electricity, the controller controls the generator to supply power to each electromagnet, and the polarity of the front end of the electromagnet is opposite to that of the rear end of the magnet block, so as to utilize the magnetic attraction of the electromagnet to the magnet block to drive the magnet block to move to the rear section of the longitudinal sliding groove, so that the front row seat moves to the rear end of the vehicle.

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