WO2011066670A1

WO2011066670A1 - Collision protection device for vehicle safety and vehicle chassis having the same

Info

Publication number: WO2011066670A1
Application number: PCT/CN2009/001360
Authority: WO
Inventors: 凌建军; 杨铸; 黄鹂
Original assignee: Ling Jianjun; Yang Zhu; Huang Li
Priority date: 2009-12-02
Filing date: 2009-12-02
Publication date: 2011-06-09

Abstract

A collision protection device for vehicle safety comprises a piston-type injection and energy dissipation device and a pipe-wall-type injection and energy dissipation device. Said piston-type injection and energy dissipation device includes a piston cylinder (6), a piston (8), a piston pushing rod (2), a piston cylinder end cover (4), a collision protection bar (1) and antifreeze solution. Said piston (8) is provided with at least one piston injection hole (801, 805) running through the top of the piston (8) from the bottom thereof. Said pipe-wall-type injection and energy dissipation device includes at least one pipe wall injection hole (601, 602), an injection buffer chamber (14), a pressure relief pipe (15) for the injection buffer chamber (14), a connection pipe (16) and an antifreeze solution reservoir (17). Said collision protection device for vehicle safety can ensure a bidirectional collision protection function of a vehicle, i.e. protection from a rear-end collision immediately after protection from a frontal collision, and ensure that the vehicle is also always in a tensile state during a high-speed frontal collision, and remarkably improve the protection performance from a side collision, thus enhancing the safety of the vehicle greatly.

Description

Vehicle safety anti-collision device and vehicle chassis with the same

The invention relates to a safety anti-collision device for a motor vehicle and to a chassis for a motor vehicle with the anti-collision device.

Background technique

Since the advent of the car in 1886, it has brought convenience to human life and work, and it has also caused a large number of casualties and property losses due to road traffic accidents. So far, the number of deaths caused by car accidents worldwide has exceeded 34 million, and hundreds of millions of people have been injured or disabled. According to the World Health Organization (WHO)'s "Global Situation of Road Safety" published on June 15, 2009, the number of deaths involving road traffic accidents in 2008 was as high as 1.2 million, and injuries or disability reached 20 million to 30 million. The annual global economic loss caused by road traffic accidents exceeds 700 billion US dollars.

In the existing vehicle, the vehicle body is in a compressed state during the impact process. This aspect will cause the vehicle body to be deformed and damaged. On the other hand, the passenger's seat space may be squeezed. In severe cases, the safety of the occupant may be critical. . For example, the steering column and the steering wheel will move backwards when the vehicle is impacted and slam the person's head and chest. The NCAP (New Car Evaluation Procedure) stipulates that the steering column moves backward at the standard test speed of 50~64km/h. The distance is not more than 12. 7cm; if the pedal is moved backwards and the lower limb is injured when the vehicle is hit, the NCAP stipulates that the distance of the pedal to move backward at the standard test speed is not more than 20cm. In actual car accidents, many motor vehicles are faster than NCAP's standard test speed. The passenger compartment is deformed sharply or even completely. Many people are actually crushed and killed. This is the death rate and injury rate of the car accident. The main reason for not being. In addition, the anti-collision performance of existing vehicles is significantly worse than the anti-collision performance, which is the main reason for the high mortality rate of rear-end collisions.

U.S. Patent No. 3,797,872 discloses the installation of a piston propulsion energy absorbing mechanism at both the front and the rear of the motor vehicle. A reducing valve is installed between the front piston cylinder and the connecting pipe, and is also installed between the rear piston cylinder and the connecting pipe. The diameter reducing valve; when the front part collides, the front anti-collision bar will move backwards with the piston through the piston rod, and the backward moving piston will force the fluid pressure in the piston cylinder to increase, and the pressurized fluid will pass. The reducing valve is sprayed at high speed into the connecting pipe. Due to the throttling effect of the reducing valve, there is a huge pressure difference between the reducing valve and the front and rear thrust. This backward thrust will cause the connecting pipe to be squeezed. That is to say, the vehicle body is in a compressed state. When the collision speed is high, the motor vehicle will be severely deformed, and even the front passengers and passengers may be squeezed to death. Similarly, when the tail collides, the tail anti-collision bar will move forward with the piston through the piston rod. The forward moving piston will force the hydraulic pressure in the piston cylinder to increase, and the pressurized fluid will pass through the reduction valve. Sprayed into the connecting pipe, due to the throttling effect of the reducing valve, there is a huge pressure difference between the front and rear of the reducing valve, which will generate a forward thrust, which will cause the connecting pipe to be squeezed, that is to say The body of the motor vehicle is in a compressed state. When the collision speed is high, the motor vehicle will be severely deformed and may even crowd the rear passengers. That is to say, the patented vehicle body is always in a compressed state during the collision, that is, the patent does not ensure that the motor vehicle body is stretched during the collision.

The patent CN201046689 filed by the present applicant discloses a new type of motor vehicle body with an anti-collision device, which allows the motor vehicle body to be stretched during the impact process, and the energy is passed through the nozzle type installed on the tubular stringer. Energy and piston energy consumers to consume. However, the patent has the following problems: 1 When a rear-end collision occurs immediately after the front portion of the motor vehicle first, the vehicle body may be in a compressed state. This is because the front piston has been extended when a frontal collision occurs. Entering the bottom of the front piston cylinder, a rear-end collision occurs. When the rear piston advances, the front piston will also move forward at the same time. The reset process of the front piston consumes almost no energy, and the pressure of the liquid in the tubular stringer is also The nozzle energy consuming device and the piston energy consuming device are unable to function at this time, and the motor vehicle body may be severely deformed and deformed, and even the occupant may be crushed and killed. 2 When the motor vehicle collides at a very high speed, the advancement distance of the front piston ram may be greater than the design distance. At this time, the anti-collision bar will directly impact the piston cylinder end cover, which will cause the motor vehicle body to be in a compressed state. In severe cases, it may result in casualties. 3 Regardless of whether the 100% full frontal collision or the 70% offset collision participates in the number of nozzles that are injected, it is impossible to satisfy both 100% full frontal collision and 70% offset collision. This is due to the 100% full frontal collision. Both front pistons are involved in absorbing energy. The volume of liquid available for injection is the sum of the volumes of the two piston cylinders. In contrast, the pressure inside the tubular stringer is low, liquid injection. The speed is low, the volume of liquid ejected in the case of the same number of nozzles is too small, and there will be an oversupply situation; and when 70% of the offset collisions, only one piston participates in absorbing energy, and the volume of liquid available for ejection is only one piston cylinder. In comparison, the pressure in the tubular stringer is large, the liquid jet velocity is large, and the volume of the liquid ejected in the case of the same number of nozzles is too large, which may result in a shortage of supply, which may lead to a serious machine. The body of the motor car is crushed and deformed, and even people are killed or injured. 4 Regardless of whether it is a rear-end collision or a frontal collision, the number of nozzles participating in the injection is constant, which is not conducive to optimizing the anti-frontal collision design and the anti-collision collision design. 5 When a side collision occurs, the number of nozzles participating in the injection is the same as the number of nozzles involved in the front collision process, which is not conducive to the rapid establishment of the liquid pressure, and is not conducive to quickly transmitting the impact force on one side to the other side. 6 In the collision process of a motor vehicle, the number of nozzles participating in the injection is fixed, that is, the number of nozzles participating in the injection early in the collision and the number of nozzles participating in the injection in the late collision are constant, which is not conducive to shortening the effective stroke of the piston. 7 The high velocity fluid ejected from the nozzle will produce a large impact force. This patent cannot use this impact force to help the vehicle body to be stretched. 8 From the previous analysis, it can be seen that after the frontal collision, the front piston does not consume almost no energy during the retreat process, and the front piston reset does not encounter resistance. This easily leads to a situation in which the rebound speed of the motor vehicle is too large, which is not conducive to personnel protection. 9 If only nozzle-type consuming energy is used, all of the injected fluid is sprayed into the fluid buffer chamber, which requires the fluid buffer chamber to be designed to be larger. 10 spring is too soft, very light collision will lead to deformation of the car body, which is not conducive to industrial applications; in addition, the spring placed on the bottom of the piston cylinder is not conducive to reducing the length of the piston cylinder, and is not conducive to industrial applications.

Summary of the invention

The invention is to ensure that the vehicle has a two-way anti-collision function, that is, first to prevent frontal collision and then to prevent rear-end collision, and always ensure that the vehicle body is in a stretched state; that is, to ensure that the motor vehicle body is always in the process of high-speed frontal collision It is in tension; it is to improve the side collision; it is to reduce the car accident during the frontal collision; it is to achieve 100% anti-frontal collision and effectively prevent the offset collision; The number of injection holes participating in the process is different from the number of injection holes participating in the injection in the collision-collecting process to adapt to the frontal collision characteristics and the rear-end collision characteristics respectively; that is, the number of injection holes involved in the side collision process is less than the frontal collision process. The number of injection holes involved in the injection.

The invention relates to a safety anti-collision device for a motor vehicle, which comprises a piston injection energy consuming device. The piston injection energy consuming device comprises a piston cylinder, a piston, a piston ejector pin, a piston cylinder end cover, a collision bar, and an antifreeze liquid. The piston is characterized by at least one piston injection hole that penetrates the top of the piston from the bottom of the piston. One end of the piston cylinder is fixedly connected to the tubular stringer, and the other end is connected to the piston cylinder end cover; The top of the piston is connected and the other end is connected to the anti-collision bar through the end of the piston cylinder.

The vehicle safety anti-collision device of the present invention further comprises a tube wall type jet energy consuming device, wherein the tube wall type jet energy consuming device comprises at least one tube wall injection hole, a jet buffer chamber, and a jet buffer chamber pressure relief tube; The pipe wall injection hole is opened on the piston cylinder; one end of the injection buffer chamber is connected to the piston cylinder, and the other end is connected to the injection buffer chamber pressure relief pipe; the pipe wall injection energy consumption device further comprises a connection pipe and An antifreeze liquid container; one end of the connecting pipe is connected to the spray buffer chamber pressure relief pipe, and the other end is connected to the antifreeze liquid box; the pipe wall type jet energy consuming device further comprises a pressure relief sealing cover; The cover is mounted on the discharge buffer chamber relief tube.

The vehicle safety anti-collision device of the present invention further comprises a tubular stringer having a liquid passage; the tubular stringer having the liquid passage is in communication with the tail of the piston injection energy consuming device. The tubular stringer having a liquid passage includes a first tubular stringer having a liquid passage, a second tubular stringer having a liquid passage, a first tubular beam having a liquid passage, and a combination a second tubular beam of the liquid passage, a third tubular beam having a liquid passage; the first, second and third tubular beams having the liquid passage and the first and second tubular longitudinal members respectively having the liquid passage The beams are connected.

A safety anti-collision device for a motor vehicle further includes a pressure guiding tube and an end cap plug having a liquid passage, wherein the pressure guiding tube is in communication with a tail portion of the piston injection energy consuming device; The head is fitted with the tail of the pressure guiding tube.

A motor vehicle safety anti-collision device of the present invention further includes a piston cylinder tail plug, and the piston cylinder tail plug is connected to the tail of the piston type jet energy consuming device.

A motor vehicle safety anti-collision device of the present invention further includes at least one pin hole and at least one pin, the pin hole being open on the piston ram, the pin being mounted in the pin hole.

The motor vehicle safety anti-collision device of the present invention further comprises at least one pre-tightening sleeve, the pre-tightening sleeve is connected at one end to the piston cylinder, and the other end is connected to the anti-collision rod.

The present invention is implemented as follows:

1) Use rigid pipes as the longitudinal beams and beams of the body.

2) A front piston injection energy consuming device and a rear piston injection energy absorbing device are respectively installed at both ends of the tubular longitudinal stern having a liquid passage.

3) Install a wall-type jet energy consuming device on the wall of the piston cylinder.

4) Overfill the hole in the piston rod and install the pin.

5) Connect one end of the pre-tightening sleeve to the anti-collision rod and the other end to the piston cylinder. The pre-tightening sleeve has five functions: one is that the piston can be tightly pressed against the piston injection hole sealing gasket, so that the piston injection hole sealing gasket blocks the piston injection hole on the piston; the second is to provide the initial deformation force, that is, the collision force After reaching a certain level, the pre-tightening sleeve can be crushed; the third is to avoid sludge pollution of the piston ram; the fourth is to provide suspension for the water tank and fan of the motor vehicle; Fifth, the pre-tightening sleeve itself can also absorb part of the energy.

The present invention has the following effects:

1) It can ensure that the motor vehicle has a two-way anti-collision function, that is, it can prevent frontal collision and then prevent rear-end collision, and always ensure that the motor vehicle body is in a stretched state.

2) It can be ensured that the motor vehicle body is always stretched during high-speed frontal collision.

3) The number of injection holes that can participate in the side collision process can be reduced, and the performance against side collision can be greatly improved. 4) It can achieve both 100% frontal collision and offset collision.

5) The number of injection holes that can participate in the frontal collision process and the number of injection holes that participate in the injection in the rear-end collision process are different to accommodate the frontal collision characteristics and the rear-end collision characteristics, respectively.

6) Since the passenger compartment is not deformed, it can avoid the rearward movement of the steering column and the steering wheel after the front collision of the motor vehicle at high speed, so that the occupant's head and chest can be better protected, and the occupant's injury or the occupant can be greatly reduced. death.

7) It can avoid the rearward movement of the pedal after the front collision of the motor vehicle at high speed, so that the lower limbs of the occupant can be better protected.

8) It can greatly reduce rollover and tailing accidents.

DRAWINGS

1 is a schematic vertical cross-sectional view of a safety anti-collision device for a motor vehicle according to the present invention;

2 is a cross-sectional view showing a piston and a piston rod of a safety anti-collision device for a motor vehicle according to the present invention;

3 is a left side view of a piston and a piston rod of a safety anti-collision device for a motor vehicle according to the present invention;

4 is a right side view of a piston and a piston rod of a safety anti-collision device for a motor vehicle according to the present invention;

Figure 5 is a cross-sectional view, taken along line A-A, of a safety anti-collision device for a motor vehicle of the present invention;

Figure 6 is a cross-sectional view showing a B-B plane of a safety anti-collision device for a motor vehicle according to the present invention;

7 is a top plan view of a safety anti-collision device for a motor vehicle according to the present invention;

8 is a schematic view showing a portion of a spray hole of a motor vehicle safety collision avoidance device according to the present invention;

9 is a schematic view showing the entire sealing of the injection hole of the safety anti-collision device of the motor vehicle according to the present invention;

FIG. 10 is a schematic cross-sectional view showing a first embodiment of a safety anti-collision device for a motor vehicle according to a second embodiment of the present invention; FIG.

Figure 12 is a cross-sectional view showing a third embodiment of a safety anti-collision device for a motor vehicle according to the present invention;

Figure 13 is a cross-sectional view showing a fourth embodiment of a safety anti-collision device for a motor vehicle according to the present invention;

Figure 14 is a cross-sectional view showing a fifth embodiment of a safety anti-collision device for a motor vehicle according to the present invention;

Figure 15 is a cross-sectional view showing a sixth embodiment of a safety anti-collision device for a motor vehicle according to the present invention;

Figure 16 is a schematic view showing a seventh embodiment of a safety anti-collision device for a motor vehicle according to the present invention.

The reference numerals are as follows:

First anti-collision bar 1, first piston ram 2, first pre-tightening sleeve 3, first piston cylinder end cover 4, first piston injection hole sealing gasket 5, first piston cylinder 6, first piston sealing ring 7. The first piston 8, the first pin hole 9, the first pin 10, the first fixing screw 11, the first exhaust pipe 12, the first wire plug 13, the injection buffer chamber 14, the injection buffer chamber pressure relief pipe 15, Connection pipe 16, antifreeze cartridge 17, first tubular stringer 18, second impact bar 19, second piston plunger 20, second pretensioning sleeve 21, second piston cylinder end cap 22, second piston Injection hole sealing gasket 23, second piston cylinder 24, second piston sealing ring 25, second piston 26, second pin hole 27, second pin 28, second fixing screw 29, second exhaust pipe 30, second The wire plug 31, the second tubular stringer 32, the first tubular beam 33, the second tubular beam 34, the third tubular beam 35, the pressure relief sealing cover 36, the end cap plug 37, the pressure guiding tube 38, Piston cylinder tail plug 39, piston cylinder tail blind plate 40, first piston injection hole 801, second piston injection hole 802, third piston injection hole 803, fourth Plug the injection hole 804, fifth hole injection piston 805, the injection hole 806 of the piston sixth, seventh injection hole 807 of the piston, the piston eighth injection holes 808, First pipe wall injection hole 601, second pipe wall injection hole 602, third pipe wall injection hole 603, fourth pipe wall injection hole 604, fifth pipe wall injection hole 605, sixth pipe wall injection hole 606, antifreeze .

detailed description

First embodiment

For ease of description, the present application describes only the left side portion of a motor vehicle safety anti-collision device, the right side portion of which corresponds symmetrically to the left side portion. For the sake of brevity, the description of the right part is omitted.

1 is a schematic cross-sectional view of a safety anti-collision device for a motor vehicle according to the present invention; FIG. 2 is a cross-sectional view of a piston and a piston rod of a safety anti-collision device for a motor vehicle according to the present invention; FIG. 4 is a right side view of a piston and a piston rod of a safety anti-collision device for a motor vehicle according to the present invention; FIG. 5 is a perspective view of a safety anti-collision device for a motor vehicle according to the present invention; FIG. 6 is a schematic cross-sectional view of a safety anti-collision device for a motor vehicle according to the present invention; FIG. 7 is a schematic plan view of a safety anti-collision device for a motor vehicle according to the present invention; FIG. 9 is a schematic view showing the entire sealing hole of the automobile safety anti-collision device of the present invention; FIG. The solid arrows in the figure indicate the direction in which the piston is propelled, and the arrows in the dotted line indicate the direction in which the fluid is ejected.

As shown in FIG. 1 to FIG. 9, a safety anti-collision device for a motor vehicle includes a piston injection energy consuming device, which further includes a front piston injection energy consuming device and a rear piston injection device. Energy consuming device.

The front piston injection energy consuming device comprises a first anti-collision bar 1, a first piston ram 2, a first pre-tightening sleeve 3, a first piston cylinder end cover 4, a first piston injection hole sealing gasket 5, a piston cylinder 6, a first piston seal ring 7, a first piston 8, a first pin hole 9, a first pin 10, a first set screw 11, a first exhaust pipe 12, and a first wire plug 13. The rear piston injection energy consuming device comprises a second anti-collision bar 19, a second piston ram 20, a second pre-tightening sleeve 21, a second piston cylinder end cap 22, a second piston injection hole sealing washer 23, The second piston cylinder 24, the second piston seal ring 25, the second piston 26, the second pin hole 27, the second pin 28, the second fixing screw 29, the second exhaust pipe 30, and the second wire plug 31.

The first piston cylinder 6 is fixedly connected to the front end of the first tubular stringer 18 having the liquid passage; the first piston cylinder end cover 4 is mounted on the front portion of the first piston cylinder 6; The first piston 8 is located inside the first piston cylinder 6; the first piston plunger 2 end is connected to the top of the first piston 8, and the other end passes through the first piston injection hole sealing gasket 5, the first piston in sequence. The cylinder end cover 4 is finally connected to the first impact bar 1. The first piston 8 further includes a first piston injection hole 801, a second piston injection hole 802, a third piston injection hole 803, a fourth piston injection hole 804, a fifth piston injection hole 805, and a sixth piston injection hole 806. a seventh piston injection hole 807 and an eighth piston injection hole 808. The second piston 26 is identical in principle to the first piston 8, and the first component of the front safety anti-collision device of the motor vehicle has the same principle as the second components of the rear safety anti-collision device. . The piston injection holes penetrate from the bottom of the first piston 8 through the top of the first piston 8; the first piston seal ring 7 is mounted on the first piston 8; the first pin hole 9 is opened in the first piston The first pin 10 is mounted in the first pin hole 9; the first pre-tightening sleeve 3 is connected to the first piston cylinder 6 and the other end is connected to the first anti-collision rod 1 Connected; the first exhaust pipe 12 is opened on the first piston cylinder 6; the first wire plug 13 is mounted on the first exhaust pipe 12; under the action of the first pre-tightening sleeve 3, The first piston injection hole sealing gasket 5 is tightly pressed between the top surface of the first piston 8 and the first piston cylinder end cover 4; the first fixing screw 11 is used to connect the first pre-tightening sleeve 3 With the first piston cylinder 6. The second piston cylinder 24 is fixedly coupled to the rear end of the first tubular stringer 18 having the liquid passage; the second piston cylinder end cover 22 is mounted at the front of the second piston cylinder 24; The second piston 26 is located within the second piston cylinder 24; the second piston ram 20 end is connected to the top of the second piston 26, and the other end is sequentially passed through the second piston injection hole sealing washer 23, the second The piston cylinder end cover 22 is finally connected to the second anti-collision bar 19; the second piston 26 and the first piston 8 are provided with a plurality of piston injection holes; the second piston sealing ring 25 is mounted on The second pin hole 26 is open on the second piston ram 20; the second pin 28 is mounted in the second pin hole 27; the second pre-tightening sleeve 21 The second end is connected to the second piston cylinder 24, and the other end is connected to the second anti-collision rod 19; the second exhaust pipe 30 is opened on the second piston cylinder 24; Second exhaust pipe 30; under the action of the second pre-tightening sleeve 21, the second piston injection hole sealing gasket 23 is tightly pressed against the top of the second piston 26 Between the face and the second piston cylinder end cover 22; the second fixing screw 29 is for connecting the second pre-tightening sleeve 21 and the second piston cylinder 24.

The first tubular stringer 18 having both the liquid passages and the second tubular stringer 32 having the liquid passage constitute a tubular stringer having a liquid passage. The first tubular beam 33 having the liquid passage is connected to the first tubular stringer 18 having the liquid passage, and the other end is connected to the second tubular string 32 having the liquid passage; The second tubular beam 34 having a liquid passage is connected to the first tubular stringer 18 having the liquid passage, and the other end is connected to the second tubular string 32 having the liquid passage; The third tubular beam 35 having a liquid passage is connected to the first tubular stringer 18 having the liquid passage, and the other end is connected to the second tubular string 32 having the liquid passage.

The vehicle safety anti-collision device of the present invention further comprises a pipe wall type jet energy consuming device (see FIGS. 5 and 6), wherein the pipe wall type jet energy consuming device comprises a first pipe wall injection hole 601 and a second pipe. a wall injection hole 602, a third pipe wall injection hole 603, a fourth pipe wall injection hole 604, a fifth pipe wall injection hole 605, a sixth pipe wall injection hole 606, a jet buffer chamber 14, an injection buffer chamber pressure relief pipe 15, The connecting pipe 16, the antifreeze casing 17; the first pipe wall injection hole 601, the second pipe wall injection hole 602, the third pipe wall injection hole 603, the fourth pipe wall injection hole 604, and the fifth pipe wall injection hole 605, the sixth pipe wall injection hole 606 penetrates the wall of the first piston cylinder 6; the injection buffer chamber 14 is mounted on the first piston cylinder 6; and the injection buffer chamber pressure relief pipe 15 is installed in the injection buffer chamber 14 The connection pipe 16 is connected to the injection buffer chamber pressure relief pipe 15 at the other end, and the antifreeze liquid container 17 is connected to the other end.

The first tubular stringer 18 having a liquid passage, the second tubular stringer 32 having a liquid passage, the first tubular beam 33 having a liquid passage, and the second tubular type having a liquid passage a beam 34, a third tubular beam 35 having a liquid passage, a first piston cylinder 6, a second piston cylinder 24, a piston injection hole on the first piston 8, and a piston injection hole on the second piston 26 The wall injection hole and the ejection buffer chamber 14 of a piston cylinder 6 are interpenetrating and filled with antifreeze.

The following analysis of how the present invention prevents frontal collisions and ensures that the body is stretched during a collision. How is the huge energy of a motor vehicle consumed by high-speed liquid injection? How to prevent rear-end collisions and ensure that the body is stretched during a collision? How to prevent frontal collisions and then prevent rear-end collisions and ensure that the body is stretched during the collision? How do you keep the body of the motor vehicle always stretched during high-speed frontal collisions? How to improve the side collision resistance? How to reduce the rollover accident of a motor vehicle during a collision? How to reduce the tail of the motor vehicle during the collision? 1) How does the invention prevent frontal collisions and ensure that the body is stretched during a collision?

When the frontal collision occurs in the motor vehicle, that is, the first impact bar 1 is located at the front of the motor vehicle, the impact force first shears the first pin 10 and squeezes the first pre-tightening sleeve 3, and then the first collision avoidance The rod 1, the first piston ram 2 is moved rearwardly with the first piston 8 with the piston injection holes 801, 802, 803, 804, 805, 806, 807, 808, and the first piston 8 is squeezed. Then, the impact force is immediately transmitted to the bottom of the second piston 26, and the second piston 26 transmits the impact force to the second piston cylinder end cover 22 through the second piston injection hole sealing washer 23, since the second piston cylinder end cover 22 The second piston cylinder 24 and the first tubular longitudinal beam 18 having the liquid passage are sequentially connected, so that the first tubular longitudinal beam 18 and the second piston cylinder 24 having the liquid passage are subjected to the backward tensile force. That is, the first tubular stringer 18 and the second piston cylinder 24 which have the liquid passage are in a stretched state, so that the occupant space can be effectively ensured not to be crushed and deformed during the front collision.

Since the pressure of the antifreeze rises rapidly, the high pressure liquid will spurt energy consumption by two routes: The first way is that the high pressure liquid will pass through the piston injection holes 801, 802, 803, 804, 805, 806 on the first piston 8. 807, 808 rush forward at high speed to consume energy; antifreeze sprayed from the piston injection holes 801, 802, 803, 804, 805, 806, 807, 808 enters the top surface of the first piston 8, the first piston cylinder end The cover 4, the first piston cylinder 6, and the first piston ram 2 are formed in an annular space; since the high-speed jetted liquid is directly sprayed on the first piston injection hole sealing gasket 5 and the first piston cylinder end cover 4, thereby The piston cylinder 6 will be subjected to a forward tensile force, that is, the first piston cylinder 6 is also in a stretched state; the first piston cylinder 6, the first tubular longitudinal beam 18 and the second piston having the liquid passage The cylinders 24 are all in a stretched state, which means that not only the occupant space is not crushed during the front collision, but also the engine can be prevented from being crushed.

The second way is that the high-pressure liquid will ignite the high-speed injection through the wall injection holes 601, 602, 603, 604, 605, 606 on the first piston cylinder 6; the high-speed jetted liquid will first enter the injection buffer chamber 14 Then, the pressure relief tube 15 and the connection tube 16 are passed through the injection buffer chamber to reach the antifreeze cartridge 17. It can be seen from Fig. 8 and Fig. 9 that in the later stage of the frontal collision, the injection holes will be closed one by one, and the piston injection holes become the only way to consume energy.

2) How is the huge energy of a motor vehicle consumed by high-speed liquid injection?

The principle that the huge energy of a motor vehicle is consumed by the high-speed jet of liquid is that the kinetic energy of the moving object is proportional to the square of the speed. For example, a test vehicle with a mass of 1500 kg collides at a speed of 72 km/h (equivalent to 20 m/s). Then, the kinetic energy of the motor vehicle is 300,000 J, which is equivalent to the kinetic energy of 4 kg of water with a speed of 387. 3 m/s. That is to say, as long as the first tubular stringer 18 can be set to a higher pressure under the advancement of the first piston 8, a high high-speed injection speed can be generated, and the kinetic energy of the motor vehicle can be consumed.

3) How does the present invention prevent rear-end collisions and ensure that the body is stretched during a collision?

When the rear-end collision occurs in the motor vehicle, that is, the second anti-collision bar 19 is located at the rear of the motor vehicle, the impact force first shears the second pin 28 and squeezes the second pre-tightening sleeve 21, and then the second anti-collision. The rod 19 and the second piston ram 20 move forward together with the second piston 26 with the piston injection hole. Under the squeezing of the second piston 26, the pressure of the antifreeze rises rapidly, and the impact force is immediately transmitted to the first At the bottom of the piston 8, the first piston 8 transmits the impact force to the first piston cylinder end cover 4 through the first piston injection hole sealing gasket 5, since the first piston cylinder end cover 4, the first piston cylinder 6 and both The first tubular stringers 18 of the liquid passages are in turn in communication, so that the first tubular stringers 18 and the first piston cylinders 6 having the liquid passages are subjected to a forward tensile force, that is, the first of the liquid passages The tubular stringer 18 and the first piston cylinder 6 are in a stretched state, Thereby, it is possible to effectively ensure that the occupant space is not crushed and deformed during the rear collision.

Since the pressure of the antifreeze rises rapidly, the high pressure liquid will bleed energy by two ways: The first way is that the high pressure liquid will be injected through the piston injection hole of the second piston 26 at a high speed to consume energy, on the second piston 26 The number of injection holes may be different from the number of injection holes on the first piston 8; the antifreeze sprayed from the piston injection holes enters the top surface of the second piston 26, the second piston cylinder end cover 22, the second piston cylinder 24, The second piston rod 20 is formed in an annular space; since the high-speed jetted liquid is directly sprayed on the second piston injection hole sealing gasket 23 and the second piston cylinder end cover 22, the second piston cylinder 24 is subjected to the backward stretching. The force, that is, the second piston cylinder 24 is also in a stretched state; in summary, the second piston cylinder 24, the first tubular stringer 18 having both the liquid passages, and the first piston cylinder 6 are both in a stretched state. The second way is that the high pressure liquid will ignite at high speed by the wall injection holes 601, 602, 603, 604, 605, 606 on the first piston cylinder 6; the liquid injected at high speed will first enter the injection buffer chamber 14 Then, the pressure relief pipe 15 and the connection pipe 16 are passed through the injection buffer chamber to reach the antifreeze case 17.

4) How to prevent frontal collisions and then prevent rear-end collisions and ensure that the body is stretched during the collision? There are frequent serial rear-end collisions on the expressway, which leads to a large number of casualties. That is, there is a lot of actual car accidents in which a car first has a frontal collision and then a rear-end collision. The time interval between a frontal collision and a rear-end collision is very short.

FIG. 10 is a schematic view showing the first frontal anti-collision collision of the motor vehicle safety anti-collision device according to the present invention, and the first pre-tightening sleeve 3, the first pin 10, and the second The sleeve 21 and the second pin 28 are pretensioned. First, if the frontal collision of the motor vehicle has occurred, it can be known from the above analysis that the first piston 8 is at the middle rear portion of the first piston cylinder 6, and the top surface of the first piston 8 and the first piston cylinder end cover 4, the first piston cylinder 6, the first piston ejector 2 formed in the annular space with antifreeze; shortly after the end of the collision, even within 0.1 seconds, a rear-end collision, impact force First, the second pin 28 is sheared and the second pre-tightening sleeve 21 is crushed, and then the second anti-collision rod 19 and the second piston rod 20 are moved forward together with the second piston 26 with the piston injection hole. Under the squeezing of the second piston 26, the pressure of the antifreeze liquid rises rapidly, and the antifreeze liquid will be injected backward through the piston injection hole on the second piston 26 and will be injected through the injection hole on the first piston cylinder 6 to consume energy. In addition, the most important point is that the bottom of the first piston 8 will withstand a strong forward thrust, and the first piston 8 will move forward, so that the top surface of the first piston 8, the first piston cylinder end cover 4, and the first piston cylinder 6 First piston ejector 2 The pressure of the antifreeze in the annular space will also rise rapidly, on the one hand, the impact force is transmitted to the first piston cylinder end cover 4, due to the first piston cylinder end cover 4, the first piston cylinder 6, the first tubular type The stringers 18 are interconnected such that the first piston cylinder 6 and the first tubular stringer 18 will be in tension. On the other hand, the antifreeze in the annular space will be injected backward through the piston injection hole on the first piston 8 to consume energy, that is to say, the first piston 8 will also consume a large amount of energy during the rapid reset process. That is to say, in the subsequent rear-end collision after the frontal collision is completed, on the one hand, the piston injection hole on the second piston 26, the wall injection hole on the first piston cylinder 6, and the piston on the first piston 8. The jetting energy will be generated by the injection holes. On the other hand, in addition to the volume of the second piston cylinder 24, the jettable antifreeze volume has a top surface of the first piston 8, a first piston cylinder end cover 4, and a first piston cylinder. 6. The liquid in the annular space formed by the first piston ram 2 also participates in the jet energy consumption.

5) How to keep the body of the motor vehicle always stretched during high-speed frontal collision?

It can be seen from Fig. 8 and Fig. 9 that when the motor vehicle has a high speed collision, when the first piston 8 reaches the bottom of the first piston cylinder 6, the first piston 8 will close the wall of the first piston cylinder 6 to be sprayed. Hole, pipe wall spray hole is closed after the first live The plug 8 will continue to advance. At the beginning, some antifreeze will enter the top surface of the first piston 8 through the piston injection hole on the first piston 8, the first piston cylinder end cover 4, the first piston cylinder 6, and the first piston crown. The annular space formed by the rod 2, the annular space is filled with antifreeze fluid shortly after, and the first piston 8 tries to continue to advance, which causes the liquid pressure in the first tubular stringer 18 to rise, and the antifreeze is in a compressed state, thus making the second piston The cylinder 24, the first tubular stringer 18 and the first piston cylinder 6 will be in a stretched state, i.e., the vehicle body can be kept in a stretched state during a high speed frontal collision.

6) How to improve the side collision resistance?

It can be seen from Fig. 7 that when the left side of the motor vehicle collides, the first tubular longitudinal beam 18 having the liquid passage will be crushed and deformed, since only the injection hole of the pipe wall on the first piston cylinder 6 is sprayed. And consuming part of the energy, resulting in a first tubular stringer 18 having a liquid passage, a second tubular stringer 32 having a liquid passage, a first tubular beam 33 having a liquid passage, and a liquid passage The pressure of the antifreeze in the two-tube beam 34 and the third tubular beam 35 having the liquid passage rises rapidly, and the pressure causes the tubular beam (33, 34, 35) having the liquid passage to be in a stretched state, and the impact force It will pass from the left to the right, which will minimize the deformation of the passenger compartment. Similarly, when a collision occurs on the right side, the impact force will pass from the right side to the left side, which can also minimize the deformation of the passenger compartment.

7) How to reduce the rollover accident of a motor vehicle during a collision? How to reduce the tail of a motor vehicle during a collision?

From the previous analysis, it can be known that when a frontal collision occurs in a motor vehicle, a huge impact force is transmitted to the tail of the motor vehicle and the vehicle body is stretched. The tail pull force is backward, and the inertial force of the motor vehicle is forward. The two forces are in the opposite direction and can greatly reduce the occurrence of rollover accidents. On the other hand, due to the huge impact force transmitted to the rear of the motor vehicle, the huge force grips the tail of the motor vehicle, the tail of the motor vehicle is difficult to swing; in addition, the torque generated by the tail tension is backward, and the rear wheel is tightly gripped, and can also be reduced. Swinging tail.

Second embodiment

Figure 11 is a cross-sectional view showing a second embodiment of a safety anti-collision device for a motor vehicle according to the present invention. The second embodiment is basically the same as the first embodiment. On the premise of the first embodiment, the connecting pipe 16, the antifreeze cartridge 17, and the anti-freeze sealing cap 36 are removed.

When the frontal collision occurs in the motor vehicle, that is, the first impact bar 1 is located at the front of the motor vehicle, the impact force first shears the first pin 10 and squeezes the first pre-tightening sleeve 3, and then the first collision avoidance The rod 1, the first piston ram 2 is moved rearwardly with the first piston 8 with the piston injection holes 801, 802, 803, 804, 805, 806, 807, 808, and the first piston 8 is squeezed. Then, the pressure of the antifreeze rises rapidly, and the impact force is immediately transmitted to the bottom of the second piston 26, and the second piston 26 transmits the impact force to the second piston cylinder end cover 22 through the second piston injection hole sealing gasket 23, The second piston cylinder end cap 22, the second piston cylinder 24 and the first tubular longitudinal beam 18 having the liquid passage are in communication, so that the first tubular longitudinal beam 18 and the second piston cylinder 24 having the liquid passage will The rearward tensile force, that is, the first tubular longitudinal beam 18 and the second piston cylinder 24 having the liquid passage are in a stretched state, thereby effectively ensuring that the occupant space is not crushed and deformed during the front collision. .

Since the pressure of the antifreeze rises rapidly, the high pressure liquid will spurt energy consumption by two routes: The first way is that the high pressure liquid will pass through the piston injection holes 801, 802, 803, 804, 805, 806 on the first piston 8. 807, 808 forward high speed injection to consume energy; from the piston injection holes 801, 802, 803, 804, 805, 806, 807, 808 The injected antifreeze liquid enters the annular space formed by the top surface of the first piston 8, the first piston cylinder end cover 4, the first piston cylinder 6, and the first piston ram 2; The piston cylinder end cover 4, so that the first piston cylinder 6 will be subjected to a forward tensile force, that is, the first piston cylinder 6 is also in a stretched state; in summary, the first piston cylinder 6 and the liquid passage Both the tubular stringer 18 and the second piston cylinder 24 are in a stretched state, which means that not only the occupant space is not crushed during the front collision, but also the engine can be prevented from being crushed. The second way is that the high-pressure liquid will ignite the high-speed injection through the wall injection holes 601, 602, 603, 604, 605, 606 on the first piston cylinder 6; the liquid injected at a high speed will first enter the injection buffer chamber 14 When the pressure of the jet buffer chamber 14 reaches a certain value, the pressure relief sealing cover 36 will be destroyed, and then the antifreeze liquid will be sprayed into the air.

When the rear-end collision occurs in the motor vehicle, that is, the second anti-collision bar 19 is located at the rear of the motor vehicle, the impact force first shears the second pin 28 and squeezes the second pre-tightening sleeve 21, and then the second anti-collision. The rod 19 and the second piston ram 20 move forward together with the second piston 26 with the piston injection hole. Under the squeezing of the second piston 26, the pressure of the antifreeze rises rapidly, and the impact force is immediately transmitted to the first At the bottom of the piston 8, the first piston 8 transmits the impact force to the first piston cylinder end cover 4 through the first piston injection hole sealing gasket 5, since the first piston cylinder end cover 4, the first piston cylinder 6 and both The first tubular stringers 18 of the liquid passages are in turn in communication, so that the first tubular stringers 18 and the first piston cylinders 6 having the liquid passages are subjected to a forward tensile force, that is, the first of the liquid passages The tubular stringer 18 and the first piston cylinder 6 are in a stretched state, so that it is possible to effectively ensure that the occupant space is not crushed and deformed during a rear collision. Since the pressure of the antifreeze rises rapidly, the high pressure liquid will ignite the energy by two paths: The first way is that the high pressure liquid will be injected through the piston injection hole of the second piston 26 at a high speed to consume energy; from these piston injection holes The emerging antifreeze liquid enters the annular space formed by the top surface of the second piston 26, the second piston cylinder end cover 22, the second piston cylinder 24, and the second piston ram 20; since the high velocity injection liquid is directly injected into the second piston injection The second piston cylinder 24 is subjected to a rearward tensile force, that is, the second piston cylinder 24 is also in a stretched state; the second piston cylinder is further 24. The first tubular stringer 18 and the first piston cylinder 6 having both the liquid passages are in a stretched state. The second way is that the high pressure liquid will ignite at high speed by the wall injection holes 601, 602, 603, 604, 605, 606 on the first piston cylinder 6; the liquid injected at high speed will first enter the injection buffer chamber 14 When the pressure of the jet buffer chamber 14 reaches a certain value, the pressure relief sealing cover 36 will be destroyed, and then the antifreeze liquid will be sprayed into the air.

Third embodiment

Figure 12 is a cross-sectional view showing a third embodiment of a safety anti-collision device for a motor vehicle according to the present invention.

The front portion of the third embodiment is substantially the same as the front portion of the first embodiment; the second impact bar 19, the second piston plunger 20, the second pretensioning sleeve 21 are removed on the basis of the front portion of the first embodiment, Second piston cylinder end cap 22, second piston injection hole sealing gasket 23, second piston cylinder 24, second piston sealing ring 25, second piston 26, second pin hole 27, second pin 28, second fixing screw 29. The second exhaust pipe 30 and the second wire plug 31 are provided with an end cap plug 37 at the tail of the first tubular stringer 18. Such an embodiment can be understood as a separate anti-collision device that can be mounted at the front or the rear of the motor vehicle.

Fourth embodiment

Figure 13 is a cross-sectional view showing a fourth embodiment of a safety anti-collision device for a motor vehicle according to the present invention.

The front portion of the fourth embodiment is substantially the same as the front portion of the third embodiment; the third embodiment is removed on the basis of the third embodiment The first tubular stringer 18 is replaced by a pressure guiding tube 38, and an end cap plug 37 is attached to the end of the pressure guiding tube 38. Such an embodiment can be understood as a separate anti-collision device that can be mounted at the front or the rear of the motor vehicle. '

Fifth embodiment

Figure 14 is a cross-sectional view showing a fifth embodiment of a safety anti-collision device for a motor vehicle according to the present invention.

The fifth embodiment is basically the same as the fourth embodiment; on the basis of the fourth embodiment, only the pressure guiding tube 38 is removed, and the piston cylinder tail plug 39 is attached to the bottom of the piston cylinder 6. This embodiment can be understood as a separate anti-collision device that can be mounted on the front or rear of the motor vehicle.

Sixth embodiment

Figure 15 is a cross-sectional view showing a sixth embodiment of a safety anti-collision device for a motor vehicle according to the present invention.

The sixth embodiment is substantially the same as the fifth embodiment; on the basis of the fifth embodiment, the piston cylinder tail plug 39 is removed, and the piston cylinder 6 is machined into a blind hole, that is, the piston cylinder tail blind plate 40 is left at the bottom thereof. . Such an embodiment can be understood as a separate anti-collision device that can be mounted at the front or the rear of the motor vehicle.

Seventh embodiment

The seventh embodiment is basically the same as the first embodiment. The only difference is that the tube wall jet energy consuming device is mounted to the first tubular stringer 18.

Other embodiments

The pressure relief sealing cover described in the above embodiments can be applied to other embodiments to constitute many different embodiments; the exhaust pipe of the above embodiment can also be clamped on the tubular longitudinal beam or open on the tubular beam. The above, the tubular stringers having the liquid passages described above can be either straight or curved, thereby forming a plurality of different embodiments; The pin holes and pins can be canceled at the same time, and the air pressure can be used to force the piston to firmly press the piston spray hole sealing washer, thereby constituting many different embodiments; the pre-tightening sleeve described in the above embodiment can be eliminated, and the air pressure can be used to force the piston tightly. The piston spray orifice sealing gasket is pressed tightly to form a number of different embodiments.

It is to be understood that the invention is not limited to the embodiments described above, and that the preferred embodiments described above are merely exemplary, and those skilled in the art can make various equivalent modifications and substitutions and different combinations according to the spirit of the invention. Different implementations. .

Claims

Rights request

1 . A safety anti-collision device for a motor vehicle, comprising a piston injection energy consuming device, wherein the piston injection energy consuming device comprises a piston cylinder, a piston, a piston ejector pin, a piston cylinder end cover, a collision bar, and an antifreeze solution The piston is characterized by at least one piston injection hole that penetrates the top of the piston from the bottom of the piston.

2. The vehicle safety collision avoidance device according to claim 1, further comprising a tube wall type jet energy consuming device, wherein said tube wall type jet energy consuming device comprises at least one tube wall injection hole and a jet buffer chamber The spray buffer chamber discharge pressure pipe; the pipe wall injection hole is opened on the piston cylinder; the spray buffer chamber is connected to the piston cylinder at one end, and the other end is connected to the spray buffer chamber pressure relief pipe.

3. The vehicle safety collision avoidance device according to claim 2, wherein said tube wall type jet energy consuming device further comprises a connecting pipe and an antifreeze liquid box; and one end of said connecting pipe and said jet buffer chamber are relieved The tubes are connected and the other end is connected to the antifreeze cartridge.

4. The vehicle safety collision avoidance device according to claim 2, wherein said tube wall type jet energy consuming device further comprises a pressure relief sealing cover; said pressure relief sealing cover is installed in the injection buffer chamber for pressure relief On the tube.

5. The vehicle safety anti-collision device according to claim 1, further comprising a tubular stringer having a liquid passage; said tubular stringer and piston jet energy consuming the liquid passage The tails of the device are connected.

6. The motor vehicle safety anti-collision device according to claim 1, further comprising a pressure guiding tube having a liquid passage, the pressure guiding tube being in communication with a tail portion of the piston injection energy consuming device.

7. The motor vehicle safety anti-collision device of claim 1 further comprising a piston cylinder tail plug, said piston cylinder tail plug being coupled to the tail of the piston injection energy consuming device.

8. The motor vehicle safety crash device of claim 1 wherein said piston injection energy consuming device comprises a front piston injection energy consuming device and a rear piston injection energy consuming device.

9. The vehicle safety anti-collision device according to claim 5, wherein the tubular stringer having a liquid passage comprises a first tubular stringer having a liquid passage and a second tubular type having a liquid passage Stringer.

10. The vehicle safety collision avoidance device according to claim 9, further comprising a first tubular beam having a liquid passage, a second tubular beam having a liquid passage, and a third having a liquid passage. a tubular beam; the first, second and third tubular beams having the liquid passages respectively have a liquid passage The first and second tubular stringers are connected.

11. The safety anti-collision device for a motor vehicle according to claim 8, wherein one end of said piston cylinder is fixedly connected to said tubular stringer, and the other end is connected to a piston cylinder end cover; One end of the piston ram is connected to the top of the piston, and the other end is connected to the anti-collision rod through the piston cylinder end cover.

12. A safety anti-collision device for a motor vehicle according to claim 10 or 11, wherein one end of the tubular stringer having the liquid passage is connected to the piston injection energy consuming device, and the other end is provided. Cover the plug.

13. A safety anti-collision device for a motor vehicle according to claim 10 or 11, wherein both ends of the tubular stringer having the liquid passage are respectively connected to the front and rear piston injection energy consuming devices. .

14. A vehicle safety anti-collision device according to claim 11, further comprising at least one pin hole, at least one pin, a piston injection hole sealing gasket, a piston sealing ring; said pin hole being in the piston The pin is mounted in the pin hole, and the piston injection hole sealing gasket sleeve is installed between the piston top surface and the piston cylinder end cover, and the piston sealing ring is mounted on the piston.

15. A safety anti-collision device for a motor vehicle according to claim 11, further comprising at least one pretensioning sleeve, said pretensioning sleeve being connected at one end to the piston cylinder and at the other end to the anti-collision rod .

16. A chassis for a motor vehicle, characterized by having an anti-collision device according to claims 1-15.