CN113246889B - Automatic automobile anti-collision device and method - Google Patents
Automatic automobile anti-collision device and method Download PDFInfo
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- CN113246889B CN113246889B CN202110546512.8A CN202110546512A CN113246889B CN 113246889 B CN113246889 B CN 113246889B CN 202110546512 A CN202110546512 A CN 202110546512A CN 113246889 B CN113246889 B CN 113246889B
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- mounting frame
- air bag
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- damping device
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
- B60Q9/008—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling for anti-collision purposes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
- B60R19/18—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact
- B60R19/20—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects characterised by the cross-section; Means within the bumper to absorb impact containing mainly gas or liquid, e.g. inflatable
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/01—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents
- B60R21/013—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over
- B60R21/0134—Electrical circuits for triggering passive safety arrangements, e.g. airbags, safety belt tighteners, in case of vehicle accidents or impending vehicle accidents including means for detecting collisions, impending collisions or roll-over responsive to imminent contact with an obstacle, e.g. using radar systems
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Radar, Positioning & Navigation (AREA)
- Remote Sensing (AREA)
- Human Computer Interaction (AREA)
- Vibration Dampers (AREA)
Abstract
The invention discloses an automatic automobile anti-collision device and an anti-collision method, wherein the automatic automobile anti-collision device comprises a mounting frame, a hydraulic damping device is arranged in the mounting frame, a group of induction coils are wound on the hydraulic damping device, wheels are connected to the lower side of the hydraulic damping device, the wheels are in rolling fit with a guide rail connected in the mounting frame, the rear end of the mounting frame is connected with a rear stop block provided with a buffer spring, and when the hydraulic damping device collides and moves backwards, the tail of the hydraulic damping device is in compression fit with the buffer spring; the front end of a telescopic rod of the hydraulic damping device penetrates through the mounting frame to be connected with an air bag accommodating body provided with an air bag, and the front end of the air bag accommodating body is connected with the collision buffer body; a group of electromagnetic coils is arranged on the mounting frame in a surrounding mode, each electromagnetic coil is electrically connected with the electromagnetic driving device, the electromagnetic driving device is electrically connected with the signal acquisition and processing module, the signal acquisition and processing module is respectively electrically connected with the start-stop switch and the audible and visual alarm, and the start-stop switch is electrically connected with the automobile electrical system. The invention combines danger prompt and collision shock absorption, has an automatic protection function and improves the driving safety.
Description
Technical Field
The invention relates to the technical field of automobile safety protection devices, in particular to an automatic automobile anti-collision device and an anti-collision method.
Background
Traffic accidents easily occur when an ordinary automobile encounters an emergency in the driving process, so that the automobile body is damaged to cause economic loss, and the life safety of a driver is endangered seriously. In current car buffer stop, generally all be fixed buffer stop, do not possess automation and early warning function, or have automated inspection and early warning function, but do not have the collision avoidance module. The automobile and the driver can not well deal with the emergency situation, and most of the current markets are collision-prevention devices which occupy large space and are heavy or automatic systems which do not have collision-prevention functions, so that the urgent requirements of modern people on the automobile driving safety problem can not be met.
Chinese patent application No. CN201921518253.2 discloses an automobile anti-collision device, which comprises a collision beam, a frame beam, and an energy-absorbing box; after the automobile is collided, the force reaches the first collision beam, the buffer part deforms to absorb a part of energy, and then the force is transmitted to the second collision beam and finally reaches the energy absorption box, the force is further absorbed by the energy absorption box, and the anti-collision process is finished. Although the technical scheme can realize the collision avoidance of the automobile, the installation of the automobile collision avoidance device occupies a large space, and the early warning and the automation cannot be realized. The Chinese patent with the application number of CN201921485193.9 discloses an automobile anti-collision device, which comprises a laser ranging module, an ultrasonic ranging module, a single-chip microcomputer control module and an Android device end; the laser ranging module and the ultrasonic ranging module are used for measuring the distance between an automobile and an obstacle, and sending signals and instructions to the Android equipment end through the single chip microcomputer control module to prompt relevant information of a driver. Although the technical scheme can realize automatic distance measurement and alarm, no damping and protecting device is arranged, and if collision occurs, a driver and an automobile can still be injured.
At present, the number of automobiles is increasing, but no good safety system and device appear in the field of automobile safety protection, so that the invention mainly solves the problem of automatic anti-collision protection in the automobile driving process and improves the driving safety of the automobile.
Disclosure of Invention
Aiming at the problems in the prior art, the invention provides an automatic automobile anti-collision device and an anti-collision method, which combine danger prompt and collision shock absorption, have an automatic protection function and greatly improve the driving safety.
In order to achieve the purpose, the invention adopts the following technical scheme:
the utility model provides an automatic buffer stop of car, includes the mounting bracket, its characterized in that:
a. the hydraulic damping device is provided with a group of wheels, the wheels are in rolling fit with a guide rail connected in the mounting frame, the rear end of the mounting frame is connected with a rear stop block, the rear stop block is connected with a buffer spring, and when the hydraulic damping device collides and moves backwards, the tail part of the hydraulic damping device is in compression fit with the buffer spring;
b. the front end of a telescopic rod of the hydraulic damping device penetrates through the mounting frame to be connected with an air bag containing body with an opening, an air bag is arranged in a cavity of the air bag containing body, and the front end of the air bag containing body is connected with a flexible collision buffer body;
c. the mounting frame is surrounded a group of electromagnetic coils arranged along the axis direction of the hydraulic damping device, each electromagnetic coil is electrically connected with the electromagnetic driving device, the electromagnetic driving device is electrically connected with the signal acquisition and processing module, the signal acquisition and processing module is respectively electrically connected with the start-stop switch and the audible and visual alarm, and the start-stop switch is electrically connected with the automobile electrical system.
Further, the hydraulic shock absorbing device includes: the damping shell comprises a front end opening, a damping shell with a closed rear end, an inner pipe sleeve with a front end opening is connected to the inner side of the rear end of the damping shell, a group of overflow small holes are formed in the inner pipe sleeve, the inner pipe sleeve and the damping shell are communicated with each other through the overflow small holes through gaps of inner and outer walls, the inner pipe sleeve is in clearance fit with a piston head, a telescopic rod is connected with the piston head, a telescopic rod body and an oil seal connected to the damping shell are sequentially corresponding to form sealing fit and sliding fit, a telescopic spring is arranged between the piston head and the rear end of the damping shell, pressure storage sponge is arranged between the front end of the damping shell and the inner pipe sleeve, an oil filling hole is formed in the rear end of the damping shell, the oil filling hole is communicated with an inner oil circuit through a check valve, and a plug is screwed on the oil filling hole.
Furthermore, the locating wheel is further connected to the side face of the shock absorption shell, a guide groove matched with the locating wheel is formed in the mounting frame, the tail end of the guide groove is connected with a limiting spring, and a lubricating oil cup communicated with the guide groove is formed in the mounting frame.
Furthermore, the front end of the guide rail is hinged with a blocking plate for limiting the movement of the wheel, the rear side of the blocking plate is connected with a cushion pad, and the front side of the blocking plate is connected with the mounting frame through a damper.
Further, the gasbag holds the body and includes the casing, and the opening part of casing is equipped with a set of cap, and every cap sets gradually first hinge hole and second hinge hole backward by the front end, and first hinge hole is articulated with the connecting rod, and the other end of connecting rod articulates the push rod, and the closure plate that the gasbag held the body front end band hole is worn out to the push rod and forms sliding fit with it, and the second hinge hole holds the body outside with the gasbag and is connected, moves behind through it when outside striking is used in the push rod and drives the cap and open.
Further, the collision buffer body is a mixture of solid natural rubber and polyvinyl chloride foam.
Further, the damper is a hydraulic damper.
Further, the anti-collision method of the automatic automobile anti-collision device comprises the following steps:
(1) Signal start-up: after getting on the bus, the start-stop switch in the bus is turned on, the whole device is electrified to start running, and the signal acquisition and processing module starts to work;
(2) Detecting the distance; the signal acquisition and processing module transmits ultrasonic waves to the outside, the ultrasonic waves return to the signal acquisition and processing module when encountering obstacles, an internal module of the signal acquisition and processing module performs data analysis and operation, and when the distance between the vehicle head and the obstacles is less than a set value, the audible and visual alarm gives an alarm and starts the electromagnetic driving device;
(3) Power transmission: the electromagnetic coil of the electromagnetic driving device is electrified to generate an alternating electric field in the space, so that the induction coil generates induction current, the induction coil drives the hydraulic damping device to move on the guide rail in an accelerated manner under the action of electromagnetic force, and the air bag accommodating body and the collision buffer body extend out of the vehicle;
(4) Damping and buffering: after the collision buffer body collides with an obstacle, firstly, the collision buffer body generates deformation buffering and absorbs partial energy, secondly, the air bag accommodating body starts to work to pop out the air bag to protect an automobile body and absorb shock, partial force is transmitted to the hydraulic shock absorption device, the hydraulic shock absorption device starts to buffer and absorb shock, when the collision energy is too large, the hydraulic shock absorption device moves on the guide rail through wheels and compresses the buffer spring to work, the final energy is transmitted to the mounting frame, and the shock absorption buffering is completed.
Through the technical scheme, the invention has the following beneficial effects:
1. this device adopts the ultrasonic ranging principle, combines car automatic ranging early warning and anticollision function adoption modularization, has realized that the device is automatic, can provide reaction and operating time for the driver in danger is sent out the police dispatch newspaper in the coming, can launch the collision buffering body contact collision danger source voluntarily simultaneously, collides and cushions in advance, brings the injury for car and personnel when preventing or reducing the collision, improves the safety guarantee.
2. Through the setting of a plurality of groups of interacting coils, the electromagnetic gun principle is utilized, the limited space of the automobile can be fully utilized, the larger acceleration and the higher running speed can be realized in a short distance, and necessary preconditions are provided for buffering and absorbing external impact energy.
3. The inside fluid of hydraulic damping device meets the resistance through the overflow aperture, makes the piston operation slow down, absorbs impact energy simultaneously, and the buffer spring of the collision front end of combination front end and rear end has formed multistage buffering, many hands section buffer mechanism, has improved buffering energy-absorbing effect greatly, brings the injury for car and personnel when preventing to collide.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic view of a hydraulic shock absorbing device;
FIG. 3 is a partial schematic structural view after the hydraulic shock absorbing device is hidden;
FIG. 4 is a schematic view of the structure of the air bag accommodating body;
FIG. 5 is a schematic diagram of a signal acquisition processing module;
FIG. 6 is a circuit diagram of an electromagnetic driving device;
FIG. 7 is a schematic diagram of the magnetic action of the electromagnetic coil and the induction coil.
Detailed Description
In order to make the present invention more clear, an automatic anti-collision device for a vehicle according to the present invention will be further described with reference to the accompanying drawings, and the specific embodiments described herein are only for explaining the present invention and are not intended to limit the present invention.
As shown in fig. 1, an automatic anti-collision device for an automobile is horizontally arranged at anti-collision protection parts of the automobile, such as the front, the back and the side of the automobile. The method comprises the following steps: the mounting frame 1 is of a semi-closed structure, and the bottom surface, the left side surface and the front end surface of the mounting frame 1 are formed by combining flat plates. Set up a hydraulic damping device 2 that has the buffering and absorb external impact energy in mounting bracket 1, the whole appearance of hydraulic damping device 2 can be the cuboid also can be for the cylinder, fixes a set of induction coil 21 on hydraulic damping device 2's shell, and every induction coil 21 closed encircles on hydraulic damping device 2's shell, and distributes a plurality of along hydraulic damping device 2's axis. A set of wheels 3 is connected to the lower part of the hydraulic damper 2, and each wheel 3 can rotate freely. Two parallel guide rails 4 are connected to the bottom surface of the mounting frame 1 through screws, the guide rails 4 are parallel to the axis of the hydraulic damping device 2, the wheels 3 are in rolling fit with the guide rails 4, and the hydraulic damping device 2 is driven to move back and forth when the wheels 3 rotate. A rear stop block 11 is arranged at the rear end of the mounting frame 1 and on an axis extension line of the hydraulic damping device 2, and the rear stop block 11 penetrates through the body of the rear stop block 11 through a group of lengthening bolts and a rod body to be in threaded connection with the bottom surface of the mounting frame 1. A guide rod (not marked) collinear with the axis of the hydraulic damping device 2 is arranged on the front end face of the rear stop block 11 and penetrates into the buffer spring 12 through the guide rod to form matching connection. When the hydraulic damping device 2 collides and moves backwards, the tail part of the hydraulic damping device 2 is contacted with the front end of the buffer spring 12 to form compression fit, and when the tail part of the hydraulic damping device 2 is compressed to the limit of the buffer spring 12, the tail part of the hydraulic damping device 2 does not interfere with a guide rod. The front part of the telescopic rod 24b of the hydraulic damping device 2 penetrates out of the mounting frame 1, specifically the front end surface of the mounting frame 1 with holes. The end of the telescopic rod 24b is in threaded connection with the air bag containing body 5, the air bag containing body 5 is cylindrical, symmetrical openings are formed in the upper side and the lower side of the outside, the inside of the air bag containing body is of a cavity structure, an air bag 5A is installed in a cavity of the air bag containing body, and the air bag 5A is in the prior art. The front end of the airbag housing body 5 is connected to a flexible impact absorbing body 6. The collision buffer body 6 is filled by mixing solid natural rubber and polyvinyl chloride foam plastic, and belongs to the prior art. A group of electromagnetic coils 13 arranged along the axial direction of the hydraulic damping device 2 are wound on the mounting frame 1, and each electromagnetic coil 13 is closed and has a winding caliber larger than the section size of the hydraulic damping device 2, namely, the electromagnetic coils 13 do not interfere with the hydraulic damping device 2 when the hydraulic damping device 2 moves back and forth. Each electromagnetic coil 13 is electrically connected with the electromagnetic driving device 7, the electromagnetic driving device 7 is electrically connected with the signal acquisition processing module 8, the signal acquisition processing module 8 is respectively electrically connected with the start-stop switch 9 and the audible and visual alarm 10, and the start-stop switch 9 is electrically connected with an automobile electrical system.
As shown in fig. 2, the hydraulic shock absorbing device 2 includes: the front end is open, rear end confined shock attenuation shell 22, and shock attenuation shell 22 is the difficult aluminium alloy casing of magnetization of cylindrical. An inner pipe sleeve 23 is connected to the inner side face of the rear end of the shock absorption shell 22, the inner pipe sleeve 23 is coaxial with the shock absorption shell 22, a gap is reserved between the outer wall of the inner pipe sleeve 23 and the inner wall of the shock absorption shell 22, and the gap is communicated with a group of overflow small holes 23a formed in the outer wall of the periphery of the inner pipe sleeve 23. The inner pipe sleeve 23 has a circular cross section and has an inner wall slidably engaged with the piston head 24a, and the piston head 24a is connected to a cylindrical telescopic rod 24b. An oil seal 22a and a linear bearing 22b are sequentially connected on the inner wall of the front part of the damping shell 22 from front to back, the oil seal 22a is an O-shaped sealing ring with three combined rings, and the linear bearing 22b is a polytetrafluoroethylene sleeve. The shaft of the extension pole 24b is in sealing engagement with the oil seal 22a and in sealing engagement with the linear bearing 22 b. An extension spring 25 is provided between the piston head 24a and the rear end of the damper housing 22, and the rear end of the extension spring 25 is fitted over a guide post 25a, and the guide post 25a is fixed to the rear end surface of the damper housing 22. A pressure storage sponge 26 is arranged between the front end of the shock absorption shell 22 and the inner pipe sleeve 23, an oil filling hole 22c is arranged at the rear end of the shock absorption shell 22, the oil filling hole 22c is communicated with an internal oil circuit through a check valve 22d, and a plug 27 is screwed in the oil filling hole 22 c. A positioning wheel 28 is also connected to the outer side surface of the rear part of the shock absorption shell 22, and the positioning wheel 28 can rotate freely.
For more clearly showing the structural characteristics of the device, fig. 3 is a partial structural schematic view after the hydraulic shock absorbing device is hidden, and as shown in fig. 3, a guide groove 14 matched with the positioning wheel 28 is arranged on the left side plate of the mounting frame 1, the guide groove 14 is parallel to the axis of the hydraulic shock absorbing device 2, and the cross section of the guide groove is rectangular. The overall length of the guide grooves 14 is slightly greater than the limit of movement of the hydraulic damper 2. The tail end of the guide groove 14 is connected with a limiting spring 15, a lubricating oil cup 16 is installed on the installation frame 1, and the lubricating oil cup 16 is communicated with the guide groove 14 through a small hole and used for dynamic lubrication of wheels and grooves.
As shown in the enlarged partial view of fig. 3, the front end of the guide rail 4 is hinged to a stopping plate 17 for limiting the movement of the wheel 3, and a cushion 17a is attached to the rear side of the stopping plate 17 for limiting the wheel 3 and reducing the impact energy to the mounting frame 1. The front side of the barrier plate 17 is connected to the front panel of the mounting frame 1 via a damper 17 b. The cushion pad 17a is a rubber pad. The damper 17b is a hydraulic damper, and under the impact of the wheel 3, the arresting plate 17 can slightly swing around a hinge point, so that after impact energy is buffered and absorbed by the damper 17b, the residual energy is finally transmitted to the mounting frame 1.
As shown in fig. 4, the airbag housing 5 includes a cylindrical housing 51, two housing covers 52 are respectively disposed at two upper and lower openings of the housing 51, each housing cover 52 is sequentially provided with a first hinge hole 53 and a second hinge hole 54 from the front end to the rear end, the first hinge hole 53 is hinged to a connecting rod 55 through a pin hole, the other end of the connecting rod 55 is hinged to a push rod 56, the push rod 56 is slidably engaged with a blocking plate 57 having a hole at the front end of the airbag housing 5, and the hole of the blocking plate 57 also has a guiding function of the push rod 56. The second hinge hole 54 is hinged to a hinge support plate 51a provided on the outside of the housing 51 through a pin hole, and the housing cover 52 is opened by being moved backward when an external impact acts on the push rod 56. The push rod 56 is placed forward in the collision buffering body 6.
As shown in fig. 5, the signal acquisition processing module 8 includes an ultrasonic wave transmitting circuit module, an ultrasonic wave receiving circuit module, and a single chip microcomputer control system, and the ultrasonic wave transmitting circuit module and the ultrasonic wave receiving circuit module are electrically connected to the single chip microcomputer control system respectively. The electromagnetic driving device 7 and the audible and visual alarm 10 are respectively electrically connected with the singlechip control system. The electrical modules are all in the prior art and have a split type and an integrated type. In this embodiment, an integrated product of the above modules is used, and an ultrasonic control sensor manufactured by HTW corporation, model number EFR-40RS15B1.
As shown in fig. 6, in the electromagnetic driving device 7, the electrical components include a power module 71, an inverter boost rectifier module 72, an energy storage capacitor 73, a control switch 74, an electromagnetic relay 75 and a diode 76, and the power module 71 is an energy supply device of the present invention using the principle of "electromagnetic gun" and can be powered by a dc power source such as a battery of an automobile itself. The inverter boost rectifying module 72 mainly boosts the dc power supply to make the energy storage capacitor 73 obtain electric energy. The method comprises the following specific working steps: the control switch 74 is closed to enable the power supply module 71 to charge the energy storage capacitor 73, the control switch 74 is opened after charging is finished, when an electric signal generated by a single chip microcomputer control system in the signal acquisition and processing module 8 is transmitted into the electromagnetic driving device 7, the electric signal drives the electromagnetic relay 75 to work, a discharging loop is closed, the energy storage capacitor 73 is quickly electrified into the closed surrounding electromagnetic coil 13 on the mounting frame 1, strong changing current generated instantaneously by an electromagnetic theory can generate a magnetic field in a space where the electromagnetic coil 13 is located, the direction of the magnetic field generated by ampere rule is shown in fig. 7, the magnetic field in the electromagnetic coil 13 points to the right from the left, namely, a magnet is arranged in the electromagnetic coil 13, the left side of the magnet is an S-level right-level N-level, a suddenly generated magnetic field can generate an induced magnetic field in the induction coil 12 of the hydraulic damping device 2, the direction of the induced magnetic field points to the left from the right according to the lenz law, namely, a magnet is arranged in the induction coil 12, the right side of the magnet is an S-level N-level, and the right side of the magnet is obviously, and the hydraulic damping device 2 accelerates to move to the right under the action of the magnetic field due to the like-polarity repulsion property of the magnet. If a plurality of closed-loop solenoid coils 13 are arranged on the mounting frame 1 and the energizing sequence of each solenoid coil 13 is controlled in turn, the induction coil 12 is accelerated by the same-direction acting force F for a plurality of times, and the high-speed ejection of the hydraulic damper device 2 on the guide rail 4 can be realized.
The working method of the invention comprises the following steps:
(1) Signal start-up: after the vehicle is loaded, the start-stop switch 9 in the vehicle is opened, the whole device is electrified to start running, and the signal acquisition and processing module 8 starts working.
(2) Distance detection: ultrasonic wave transmitting circuit module in signal acquisition processing module 8 externally launches the ultrasonic wave, and at the same time single chip microcomputer control system produces rectangular pulse signal and begins the count, and the ultrasonic wave is reflected back after meetting the place ahead barrier, is received by ultrasonic wave receiving circuit module, and the echo signal that receives when single chip microcomputer control system begins to stop the count and produce outside interrupt, through car and barrier distance formula: d =1/2, 8729v, V8729t =1/2, 8729v, 8729n, N87290 (wherein D is the measurement distance, V is the sound wave propagation speed, T is the sound wave round-trip time, N is the pulse number counted by the microcontroller, T is the machine period of the singlechip), when the singlechip control system calculates that the automobile approaches to an obstacle but is not less than the set danger distance, the audible and visual alarm 10 immediately sends an alarm to remind a driver to avoid the obstacle; when the singlechip control system calculates that the distance between the automobile obstacles is smaller than the set dangerous distance, the singlechip control system immediately sends an electric signal to the electromagnetic driving device 7.
(3) Power transmission: the electric signal generated by the signal acquisition and processing module 8 is transmitted to the electromagnetic driving device 7, the electromagnetic driving device 7 energizes the inner conducting wire of the closed and surrounding electromagnetic coil 13 on the mounting rack 1, so that an alternating electric field is generated in space, and according to the electromagnetic theory, the fixed induction coil 12 on the hydraulic damping device 2 generates induced current, so that the generated electromagnetic force can push the hydraulic damping device 2 to move on the guide rail 4 through the wheels 3 and pop up quickly. The barrier plate 17 is provided as a protection means for the hydraulic damper 2 against the mounting frame 1, and the positioning wheel 28 and the guide groove 14 are provided as a protection means for preventing the hydraulic damper 2 from shifting or overturning.
(4) Damping and buffering: when the airbag accommodating body 5 and the collision buffer body 6 are impacted by an obstacle, the collision part is firstly the collision buffer body 6, the collision buffer body 6 buffers and absorbs partial energy, and triggers the shell cover 52 of the airbag accommodating body 5 to open, the airbag 5A inflates to work, the residual energy is buffered and absorbed again, and the automobile can be protected in a large area, the protection area is enlarged, splashes ejected during collision are prevented from hurting people and damaging the automobile, the collision energy is transmitted to the hydraulic damping device 2 through the airbag accommodating body 5 to be buffered and absorbed for three times, namely, the piston head 24a extrudes the hydraulic oil in the automobile, the hydraulic oil flows through the overflow small hole 23a to absorb the energy in a damping way, meanwhile, the hydraulic damping device 2 moves backwards to be in compression fit with the buffer spring 12 to buffer and absorb the energy again, and finally the possible residual energy is transmitted to the rear stop 11. The whole damping and buffering process is finished.
The beneficial effect of this device:
1. this device adopts the ultrasonic ranging principle, carries out real-time detection and reminds navigating mate to dodge with the dangerous source that probably appears, can have in time feedback and carry out initiative protection to definite dangerous source, utilizes "electromagnetism big gun" principle, can realize in limited automobile space that hydraulic damping device obtains great acceleration and functioning speed in time of a period, the short distance, initiatively protects fast, has avoided the great loss because of the reaction slowly causes. In addition, the device occupies small space, is conveniently integrated on the automobile body, and does not influence the appearance of the automobile.
2. The device adopts a multi-stage and multi-structure buffering energy absorption means, energy absorption is buffered through energy absorption materials during contact collision, then large-area effective protection is carried out through air bag work, hydraulic oil damping absorption and spring damping energy absorption are carried out, buffering energy absorption is realized at different positions and different time periods, personal safety is fully protected, and automobile loss is reduced.
3. The device also has the functions of preventing overturn and limiting protection of the track 4 and the mounting rack 1 by punching the hydraulic damping device 2, and is provided with the opening and closing shell cover 52 serving as a protection body for the air bag 5A, so that the failure condition of the air bag 5A caused by the puncture of an external object is prevented, and the whole device is more reliable, stable and safe to operate.
Claims (7)
1. The utility model provides an automatic buffer stop of car, includes mounting bracket (1), its characterized in that:
a. the hydraulic shock absorption device is characterized in that a hydraulic shock absorption device (2) capable of buffering and absorbing external impact energy is arranged in the mounting frame (1), the hydraulic shock absorption device (2) surrounds a group of induction coils (21) along the axis direction, a group of wheels (3) are arranged on the hydraulic shock absorption device (2), the wheels (3) are in rolling fit with a guide rail (4) connected in the mounting frame (1), a rear stop block (11) is connected to the rear end of the mounting frame (1), a buffer spring (12) is connected to the rear stop block (11), and when the hydraulic shock absorption device (2) collides and moves backwards, the tail of the hydraulic shock absorption device (2) is in compression fit with the buffer spring (12);
b. the front end of a telescopic rod (24 b) of the hydraulic damping device (2) penetrates out of the mounting frame (1) to be connected with an air bag containing body (5) with an opening, an air bag (5A) is installed in a cavity of the air bag containing body (5), and the front end of the air bag containing body (5) is connected with a flexible collision buffer body (6);
c. a group of electromagnetic coils (13) arranged along the axis direction of the hydraulic damping device (2) are wound on the mounting frame (1), each electromagnetic coil (13) is electrically connected with the electromagnetic driving device (7), the electromagnetic driving device (7) is electrically connected with the signal acquisition and processing module (8), the signal acquisition and processing module (8) is respectively electrically connected with the start-stop switch (9) and the audible and visual alarm (10), and the start-stop switch (9) is electrically connected with the automobile electrical system;
the hydraulic damping device (2) comprises: front end opening, rear end confined shock attenuation shell (22), shock attenuation shell (22) rear end inboard is connected front end open-ended inner tube cover (23), be equipped with a set of overflow aperture (23 a) on inner tube cover (23), inner tube cover (23) and shock attenuation shell (22) are through overflow aperture (23 a) intercommunication in the clearance of interior outer wall, inner tube cover (23) inner wall and piston head (24 a) clearance fit, connect telescopic link (24 b) on piston head (24 a), telescopic link (24 b) pole body and oil blanket (22 a) of connecting on shock attenuation shell (22), linear bearing (22 b) correspond in proper order and form sealed cooperation and sliding fit, set up a expanding spring (25) between piston head (24 a) and shock attenuation shell (22) rear end, be equipped with pressure storage sponge (26) between shock attenuation shell (22) front end and inner tube cover (23), be equipped with oil filler point (22 c) on shock attenuation shell (22) rear end, oil filler point (22 c) communicate inside oil circuit through check valve (22 d), oil filler point (27 c) spiro union plug (27).
2. The automatic automobile anti-collision device according to claim 1, characterized in that: locating wheel (28) are still connected to shock attenuation shell (22) side, be equipped with on mounting bracket (1) with locating wheel (28) complex guide way (14), guide way (14) trailing end connection spacing spring (15), be equipped with lubricating cup (16) with guide way (14) intercommunication on mounting bracket (1).
3. The automatic automobile anti-collision device according to claim 1, characterized in that: the front end of the guide rail (4) is hinged with a blocking plate (17) used for limiting the movement of the wheels (3), the rear side of the blocking plate (17) is connected with a cushion pad (17 a), and the front side of the blocking plate (17) is connected with the mounting frame (1) through a damper (17 b).
4. The automatic automobile anti-collision device according to claim 1, characterized in that: the air bag accommodating body (5) comprises a shell (51), a group of shell covers (52) are arranged at an opening of the shell (51), each shell cover (52) is provided with a first hinge hole (53) and a second hinge hole (54) from the front end to the back in sequence, the first hinge hole (53) is hinged to a connecting rod (55), the other end of the connecting rod (55) is hinged to a push rod (56), the push rod (56) penetrates through a blocking plate (57) with a hole in the front end of the air bag accommodating body (5) and is in sliding fit with the blocking plate, the second hinge hole (54) is hinged to the outer side of the air bag accommodating body (5), and the shell covers (52) are driven to be opened through backward movement when external impact is applied to the push rod (56).
5. The automatic automobile anti-collision device according to claim 4, characterized in that: the collision buffer body (6) is a mixture of solid natural rubber and polyvinyl chloride foam plastic.
6. The automatic automobile anti-collision device according to claim 3, characterized in that: the damper (17 b) is a hydraulic damper.
7. The anti-collision method of the automatic automobile anti-collision device according to claim 1, characterized in that: the method comprises the following steps:
(1) Signal start-up: after getting on the bus, the start-stop switch (9) in the bus is turned on, the whole device is electrified to start running, and the signal acquisition processing module (8) starts to work;
(2) Detecting the distance; the signal acquisition and processing module (8) transmits ultrasonic waves to the outside, the ultrasonic waves return to the signal acquisition and processing module (8) when encountering obstacles, an internal module of the signal acquisition and processing module (8) performs data analysis and operation, and when the distance from the vehicle head to the obstacles is smaller than a set value, the audible and visual alarm (10) gives an alarm and starts the electromagnetic driving device (7);
(3) Power transmission: an electromagnetic coil (13) of the electromagnetic driving device (7) is electrified to generate an alternating electric field in space, so that an induction coil (21) generates induction current, the induction coil (21) drives the hydraulic damping device (2) to move on the guide rail (4) in an accelerated manner under the action of electromagnetic force, and the air bag accommodating body (5) and the collision buffer body (6) extend out of the vehicle;
(4) Damping and buffering: after the collision buffer body (6) collides with an obstacle, firstly, the collision buffer body (6) deforms to buffer and absorb partial energy, secondly, the air bag accommodating body (5) starts to work to pop out the air bag (5A) to protect the automobile body and absorb shock, partial force is transmitted to the hydraulic shock absorption device (2), the hydraulic shock absorption device (2) starts to buffer and absorb shock, when the collision energy is overlarge, the hydraulic shock absorption device (2) moves on the guide rail (4) through the wheels (3) and compresses the buffer spring (12) to work, the final energy is transmitted to the mounting frame (1), and shock absorption and buffering are completed.
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| CN202110546512.8A CN113246889B (en) | 2021-05-19 | 2021-05-19 | Automatic automobile anti-collision device and method |
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| CN202110546512.8A CN113246889B (en) | 2021-05-19 | 2021-05-19 | Automatic automobile anti-collision device and method |
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| CN113246889B true CN113246889B (en) | 2022-11-22 |
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| CN201824982U (en) * | 2010-10-22 | 2011-05-11 | 长沙理工大学 | Electromagnetic type propelling unit for energy absorbing parts of automobiles |
| JP2012017083A (en) * | 2010-07-07 | 2012-01-26 | Hirukawa Makoto | Hydraulic shock buffer device |
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| CN206734229U (en) * | 2017-04-12 | 2017-12-12 | 常州中隆车辆配件有限公司 | Bumper extension type automobile hydraulic buffers automatic collision safety device |
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| CN2688553Y (en) * | 2003-12-25 | 2005-03-30 | 谢晓鹏 | Protrusive bumper type automatic safety apparatus for vehicle |
| CN203543864U (en) * | 2013-10-16 | 2014-04-16 | 韩天学 | Electromagnetic car crash damping device |
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| JP2012017083A (en) * | 2010-07-07 | 2012-01-26 | Hirukawa Makoto | Hydraulic shock buffer device |
| CN201824982U (en) * | 2010-10-22 | 2011-05-11 | 长沙理工大学 | Electromagnetic type propelling unit for energy absorbing parts of automobiles |
| CN106608235A (en) * | 2015-10-23 | 2017-05-03 | 范光宏 | Anti-collision safety device used during backing truck |
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