CN100375689C - Elastic collision buffer for automobile - Google Patents
Elastic collision buffer for automobile Download PDFInfo
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- CN100375689C CN100375689C CNB2006100495584A CN200610049558A CN100375689C CN 100375689 C CN100375689 C CN 100375689C CN B2006100495584 A CNB2006100495584 A CN B2006100495584A CN 200610049558 A CN200610049558 A CN 200610049558A CN 100375689 C CN100375689 C CN 100375689C
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- oil
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Abstract
The present invention relates to an elastic collision buffer for an automobile, which comprises a piston and a hydraulic cylinder respectively fixed on an automobile bumper and an automobile frame and is characterized in that the hydraulic cylinder is a high-pressure cylinder. An oil chamber of the high-pressure cylinder is communicated with an accumulator by a high-pressure oil pipe, and the oil chamber, the high-pressure oil pipe and the accumulator are filled with hydraulic oil to form a closed hydraulic system. The hydraulic cylinder can also be the high-pressure cylinder only. The hydraulic system is designed into a closed structure by the present invention; the high-pressure cylinder is designed into a spring with high stiffness by using the condensibility of the hydraulic oil; the high-pressure cylinder converts most of dynamic energy produced by collision to the elastic potential energy of the hydraulic oil, but the rest dynamic energy is converted to heat energy. Moreover, the entire procedure has the damping action, which makes the deformation time of the spring prolonged. Thereby, the action time of the impulsion is increased. Consequently, the impact force is efficiently decreased. Therefore, the elastic collision buffer not only protects the passengers in the automobile but also avoids the damage on the automobile body. The elastic collision buffer eliminates the phenomenon of the fatal accident. Thus, the elastic collision buffer is worthy of being popularized among the existing automobiles.
Description
Technical field
The present invention relates to a kind of collision bumper, especially refer to a kind of be applied on the automobile and make automobile exempt from the elastic collision buffer of damage in the moment of collision.
Background technology
At present, automobile becomes the closely bound up vehicle in people's life already because of it is convenient, fast.But the car crash tragedy of following simultaneously that traffic accident caused also happens occasionally.And from the analysis of various accidents as can be known, the collision damage of automobile front and back ends is the most serious.In order to protect passenger's life security as far as possible, the principle of " would rather car ruin and people do not die " is being followed in traditional automobile front and back ends design.Simultaneously, also designed bumper/spoiler in the front and rear portions of automobile, between this bumper/spoiler and the car body for being rigidly connected.When automobile suffered a little impact force, this bumper/spoiler also can play the effect of protection car body to a certain extent.But development along with auto-domain; the moving velocity of automobile is also more and more faster; when the speed of a motor vehicle reach 60 kms/hour automobile bump moment, huge force of inertia will make automobile head or afterbody be squeezed and gross distortion take place, and the bumper/spoiler of this moment can't realize protecting the purpose of car body at all.Therefore, preserve car body when how to protect occupant safety, the key subjects that become automobile designers and manufacturer and faced.
For this reason, people design different vehicle anticollision devices and come, as Chinese Granted publication number for " the automobile hydraulic energy disperser " of CN2318085Y just disclosed so a kind of device.It mainly comprises parts such as hydraulic column, steel bushing, oil pump, oil spout chamber, oil cabinet, spring embolus, it is to utilize the indoor liquid oils of hydraulic column extruding oil spout, embolus is moved down, make hydraulic oil go into oil cabinet by jet flow gap high speed jet, make the kinetic energy of auto against be converted into the kinetic energy of liquid at high speed ejection, so that play the effect of alleviating the object impulsive contact force.Though such scheme is feasible on principle, from analyzing as can be known: the huge kinetic energy that auto against produced, want in 20 milliseconds to 30 milliseconds extremely short collision time sections, all to be converted into the hydraulic oil kinetic energy that from the gap, sprays, this is impossible.That is to say that Piston Compression fluid sprays it from aperture, though expenditure of energy is arranged, far not on an order of magnitude, promptly the kinetic energy that auto against produced can't be transformed by flow resistance the kinetic energy that this expenditure of energy and auto against moment are produced.Therefore, it can not be dealt with problems.Simultaneously, in the short like this time period, hydraulic oil will make the indoor pressure of oil spout sharply raise as can not in time draining from oil nozzle, and the phenomenon of steel bushing explosion very likely occurs.Moreover, because the existence of oil nozzle, above-mentioned energy disperser can only be worked under low pressure, and its volume will be very huge, and want that it is very unpractical being installed in it in narrow space that has car body head or afterbody now, thereby such scheme implements the effect that can't reach anticipation.
Summary of the invention
Technical matters to be solved by this invention is the defective that overcomes prior art, a kind of elastic collision buffer for automobile is provided, when it is subjected to clashing into strongly at automobile, both can prolong the auto against time, reduce impact, can absorb the kinetic energy that collision produces again, thereby can realize that human body and car body exempt from the purpose of infringement simultaneously.
The present invention solves the problems of the technologies described above first technical scheme that is adopted: this elastic collision buffer for automobile comprises hydraulic actuating cylinder, the piston of this hydraulic actuating cylinder and the bumper/spoiler of automobile fix, hydraulic actuating cylinder then is connected on the automobile chassis frame, it is characterized in that: described hydraulic actuating cylinder is a high-voltage oil cylinder, the oil pocket of this high-voltage oil cylinder is connected with the pressure accumulation bottle by high pressure fuel pipe, and all has been full of hydraulic oil in described oil pocket, high pressure fuel pipe and the pressure accumulation bottle and forms the osed top hydraulic efficiency pressure system.It is less that the volume of the high-voltage oil cylinder in this scheme can be done, and the pressure accumulation bottle can be placed on other position of car body, and high-voltage oil cylinder is installed in the space at car body head or rear portion easily.
Further improvement as first technical scheme of the present invention, can be equipped with permission hydraulic oil on the described high pressure fuel pipe from first check valve of described oil pocket, and also have the damping hole that slowly flows into described oil pocket for the hydraulic oil in the described pressure accumulation bottle on this first check valve to described pressure accumulation bottle side shifting.
Another kind as first technical scheme of the present invention improves, it can also comprise the low pressure oil supply pump, this low pressure oil supply pump is connected with above-mentioned osed top hydraulic efficiency pressure system by pipeline, and second check valve that allows hydraulic oil flow to described osed top hydraulic efficiency pressure system from the low pressure oil supply pump is installed on this pipeline.
In above-mentioned each scheme, described high-voltage oil cylinder can be for more than one or two or two.When the high-voltage oil cylinder that adopts more than two or two, each high-voltage oil cylinder is installed between described Federal bumper and the automobile chassis frame respectively side by side.
Compared with prior art, the invention has the advantages that: because hydraulic actuating cylinder is a high-voltage oil cylinder, and hydraulic efficiency pressure system (or hydraulic cavities) is closed state, therefore working as automobile bumps, bumper/spoiler drives in the piston and moves, when the hydraulic oil in the oil pocket is compressed, pressure in the hydraulic efficiency pressure system (or the pressure in the hydraulic cavities) is linear with certain slope and raises, its pressure maximum can reach 100Mpa (if without the pressure accumulation bottle then can reach 150Mpa), become one group of big stiffness " spring " truly, it will collide the kinetic energy major part that is produced and be converted into elastic potential energy, remainder then utilizes the intermolecular frictional heating of hydraulic oil to be converted into heat energy, and whole kinetic energy absorption process has shock damping action, and it makes the deformation time lengthening of " spring ", also increase the in-service time of momentum thus, thereby reduced impact effectively.And utilize first check valve of band damping hole, make above-mentioned elastic potential energy behind auto against, can slowly discharge, promote that piston moves outward or car body after move, make bumper/spoiler return to original position.Therefore, energy disperser of the present invention had both been protected passenger's safety, had avoided car body to suffer damage again, had solved the target of " car is not ruined, and the people does not die " that cannot realize for a long time, so be worth applying on existing each vehicle.
Description of drawings
Fig. 1 is system's system scheme drawing of first embodiment of the invention;
Fig. 2 is installed in structural representation on the vehicle frame front side member for two high-voltage oil cylinders in the second embodiment of the invention.
The specific embodiment
Embodiment describes in further detail the present invention below in conjunction with accompanying drawing.
Embodiment 1: shown in figure l, this elastic collision buffer for automobile comprises two high-voltage oil cylinders, the piston 1 of each high-voltage oil cylinder fixes with the bumper/spoiler 8 of automobile respectively, 2 of each high-voltage oil cylinders are installed on the longeron 9 of automobile chassis frame 10 (its installation can referring to Fig. 2) respectively, and the oil pocket of each high-voltage oil cylinder also high pressure fuel pipe by separately is connected with pressure accumulation bottle 4, all has been full of hydraulic oil in oil pocket, high pressure fuel pipe and the pressure accumulation bottle 4 and forms the osed top hydraulic efficiency pressure system.Here, pressure accumulation bottle 4 can be placed on other position of vehicle frame, can dwindle the volume of high-voltage oil cylinder so widely, make it can be installed in the front portion or the rear portion of headstock easily, and when simultaneously satisfying auto against again, the volume that piston moves and the ratio of the volume of closed hydraulic system meet the elastic deformation rule of hydraulic oil, from the compressibility of liquid as can be known:
K:1/ β=-
P
*V/
V can get, V/
V=-K/
P
As establish:
P is then V/ of 2000Mna for 100Mpa K
V is 20
Wherein K is the modulus of elasticity of hydraulic oil.P is the coefficient of volume compressibility of hydraulic oil.
P is the changing value of liquid Wa oil pressure; In the present embodiment, by present condition, the pressure maximum of hydraulic efficiency pressure system can be born 100Mpa, just
P is 100Mva, certainly also as required value be change value of pressure less than (or greater than) 100Mpa.
V is that the hydraulic oil volume changes at pressure
During P, the variable quantity of its volume (pressure increase, volume reduces), at this, the volume that piston moves during auto against just.V is the initial volume of hydraulic oil, just the volume of hydraulic efficiency pressure system.Therefore, when the volume that moves when piston meets above-mentioned rule with the ratio of the volume of closed hydraulic system, just can make it become " spring " of a big stiffness.
In the present embodiment, after the collision, for the elastic potential energy in the pressure accumulation bottle 4 is slowly discharged, on above-mentioned high pressure fuel pipe, be equipped with permission hydraulic oil from first check valve 5 of oil pocket, and also have the damping hole 3 that slowly flows into oil pocket for the hydraulic oil in the pressure accumulation bottle 4 on this first check valve 5 to pressure accumulation bottle side shifting.
After adopting above-mentioned high-voltage oil cylinder, when automobile bumped, bumper/spoiler 8 drove in the piston 1 and moves, and the hydraulic oil in the oil pocket is compressed, because hydraulic efficiency pressure system is an osed top, so its pressure inside is linear rising along with moving in the piston.Ability to bear according to present high pressure fuel pipe, the pressure maximum of this hydraulic efficiency pressure system can reach 100MPa, can regard " spring " of one group of big stiffness as, it will collide the elastic potential energy that the kinetic energy major part that is produced is converted into hydraulic oil, remainder then is converted into heat energy because of the intermolecular frictional heating of hydraulic oil, and the kinetic energy absorption process has shock damping action, and it makes the deformation time lengthening of " spring ".According to momentum theorem as can be known: act on the momentum of making a concerted effort on the particle in certain period, equal the increment at this section momentum of particle in the time, its formula is as follows: I=p-p
0=F
T, wherein I is a momentum, p
0Be the momentum at the beginning of this section period, p is this section momentum of time end, and F is an application force,
T is an in-service time.Obviously, increase the in-service time of momentum, the impact when just having reduced collision, thus can reach the purpose of protecting car body.And after the collision, above-mentioned elastic potential energy slowly discharges under damping hole 3 effect of first check valve, promote that piston moves outward or car body after move, make bumper/spoiler return to original position.
In order to keep hydraulic efficiency pressure system hydraulic oil abrim all the time, system also is furnished with low pressure oil supply pump 7, this low pressure oil supply pump 7 is connected with above-mentioned osed top hydraulic efficiency pressure system by pipeline, and on this pipeline, be equipped with allow hydraulic oil from the low pressure oil supply pump flow to closed hydraulic system and high pressure oil can not reverse circulated second check valve 6.
Embodiment 2: as shown in Figure 2, itself and the above-mentioned first embodiment difference are: cancelled the pressure accumulation bottle, this energy disperser only is two high-voltage oil cylinders, equally, the piston 1 of each high-voltage oil cylinder fixes with the bumper/spoiler 8 of automobile respectively, each high-voltage oil cylinder 2 then is installed in respectively on the longeron 9 of automobile chassis frame 10, and hydraulic oil and form the osed top hydraulic cavities abrim in the oil pocket of each high-voltage oil cylinder.In like manner, when auto against,, just can make it become " spring " of a big stiffness as long as the volume that moves of piston and the ratio of osed top hydraulic cavities volume meet the elastic deformation rule of hydraulic oil.At this moment, the volume of each high-voltage oil cylinder is relatively large.If the Vehicular body front installation site allows, can adopt such high-voltage oil cylinder as energy disperser.This spline structure is simpler, install to connect also very conveniently, and the pressure of hydraulic cavities no longer is limited by the holding capacity of high pressure fuel pipe, and its pressure maximum can reach 150MPa.The principle of work of this energy disperser is same as the previously described embodiments, is not described in detail in this.
Protection scope of the present invention is not limited to the foregoing description, when the influence of not considering to rebound, and the installation site permission, also can adopt a high-voltage oil cylinder as energy disperser.Perhaps adopt a high-voltage oil cylinder, the oil pocket of this high-voltage oil cylinder is connected with the pressure accumulation bottle by high pressure fuel pipe; Perhaps, also can be furnished with the pressure accumulation bottle more than two or two in order to reduce the volume of high-voltage oil cylinder.Obviously, within the scope that such scheme all belongs to the present invention and protected.
Claims (4)
1. elastic collision buffer for automobile, comprise hydraulic actuating cylinder, the piston of this hydraulic actuating cylinder (1) fixes with the bumper/spoiler (8) of automobile, hydraulic actuating cylinder (2) then is connected on the automobile chassis frame (10), it is characterized in that: described hydraulic actuating cylinder is a high-voltage oil cylinder, the oil pocket of this high-voltage oil cylinder is connected with pressure accumulation bottle (4) by high pressure fuel pipe, and all has been full of hydraulic oil in described oil pocket, high pressure fuel pipe and the pressure accumulation bottle and forms the osed top hydraulic efficiency pressure system.
2. elastic collision buffer for automobile according to claim 1, it is characterized in that: be equipped with permission hydraulic oil on the described high pressure fuel pipe from first check valve (5) of described oil pocket, and also have the damping hole (3) that slowly flows into described oil pocket for the hydraulic oil in the described pressure accumulation bottle on this first check valve to described pressure accumulation bottle (4) side shifting.
3. elastic collision buffer for automobile according to claim 2, it is characterized in that: also comprise low pressure oil supply pump (7), this low pressure oil supply pump is connected with above-mentioned osed top hydraulic efficiency pressure system by pipeline, and second check valve (6) that allows hydraulic oil flow to described osed top hydraulic efficiency pressure system from the low pressure oil supply pump is installed on this pipeline.
4. according to claim 1 or 2 or 3 described elastic collision buffer for automobile, it is characterized in that: described high-voltage oil cylinder is at least two, is installed in side by side respectively between described Federal bumper (8) and the automobile chassis frame (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100495584A CN100375689C (en) | 2006-02-22 | 2006-02-22 | Elastic collision buffer for automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006100495584A CN100375689C (en) | 2006-02-22 | 2006-02-22 | Elastic collision buffer for automobile |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1810546A CN1810546A (en) | 2006-08-02 |
| CN100375689C true CN100375689C (en) | 2008-03-19 |
Family
ID=36843712
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100495584A Expired - Fee Related CN100375689C (en) | 2006-02-22 | 2006-02-22 | Elastic collision buffer for automobile |
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| CN (1) | CN100375689C (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104226876A (en) * | 2013-06-11 | 2014-12-24 | 镇江市申茂机械有限公司 | Hydraulic damping device |
| CN105346490A (en) * | 2015-11-20 | 2016-02-24 | 芜湖国风塑胶科技有限公司 | Anti-collision buffer device for car |
| CN105513479A (en) * | 2016-01-15 | 2016-04-20 | 浙江海洋学院 | Collision device with cushioning mechanism |
| CN111319576A (en) * | 2018-12-14 | 2020-06-23 | 江苏瑞延理化汽车饰件有限公司 | Automobile bumper for new energy automobile |
| CN111236160A (en) * | 2020-03-30 | 2020-06-05 | 河海大学常州校区 | Wharf protection device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3862669A (en) * | 1972-11-24 | 1975-01-28 | Gen Motors Corp | Occupant restraint system |
| JPS6038235A (en) * | 1983-08-10 | 1985-02-27 | Kenji Ogaki | Hydraulic shock absorber solidified with body construction |
| CN2313788Y (en) * | 1997-11-24 | 1999-04-14 | 郭煊 | Hydraulic collision buffer of vehicle |
| CN2318085Y (en) * | 1997-10-27 | 1999-05-12 | 彭小辉 | Hydraulic damper for automobile |
| JPH11170936A (en) * | 1997-12-09 | 1999-06-29 | Kayaba Ind Co Ltd | Collision cushioning device |
| CN2592443Y (en) * | 2003-01-10 | 2003-12-17 | 黄飞灵 | Autmobile collision buffer protector |
| CN2691958Y (en) * | 2004-03-22 | 2005-04-13 | 胡建明 | Energy adsorption type automobile dumper |
-
2006
- 2006-02-22 CN CNB2006100495584A patent/CN100375689C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3862669A (en) * | 1972-11-24 | 1975-01-28 | Gen Motors Corp | Occupant restraint system |
| JPS6038235A (en) * | 1983-08-10 | 1985-02-27 | Kenji Ogaki | Hydraulic shock absorber solidified with body construction |
| CN2318085Y (en) * | 1997-10-27 | 1999-05-12 | 彭小辉 | Hydraulic damper for automobile |
| CN2313788Y (en) * | 1997-11-24 | 1999-04-14 | 郭煊 | Hydraulic collision buffer of vehicle |
| JPH11170936A (en) * | 1997-12-09 | 1999-06-29 | Kayaba Ind Co Ltd | Collision cushioning device |
| CN2592443Y (en) * | 2003-01-10 | 2003-12-17 | 黄飞灵 | Autmobile collision buffer protector |
| CN2691958Y (en) * | 2004-03-22 | 2005-04-13 | 胡建明 | Energy adsorption type automobile dumper |
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| CN1810546A (en) | 2006-08-02 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Joyo (Ningbo) Automotive Co., Ltd Assignor: Yang Peiying Contract fulfillment period: 2008.10.17 to 2026.2.22 contract change Contract record no.: 2008990000829 Denomination of invention: Elastic collision buffer for automobile Granted publication date: 20080319 License type: Exclusive license Record date: 20081017 |
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| LIC | Patent licence contract for exploitation submitted for record |
Free format text: EXCLUSIVE LICENSE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.10.17 TO 2026.2.22; CHANGE OF CONTRACT Name of requester: QIYA( NINGBO ) CAR PARTS CO., LTD. Effective date: 20081017 |
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| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20080319 Termination date: 20130222 |