CN101722917A - Mechanism for preventing invasion of lower limbs of passers-by - Google Patents
Mechanism for preventing invasion of lower limbs of passers-by Download PDFInfo
- Publication number
- CN101722917A CN101722917A CN200810167907A CN200810167907A CN101722917A CN 101722917 A CN101722917 A CN 101722917A CN 200810167907 A CN200810167907 A CN 200810167907A CN 200810167907 A CN200810167907 A CN 200810167907A CN 101722917 A CN101722917 A CN 101722917A
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- Prior art keywords
- passers
- latch pin
- support arm
- pivot
- lower limbs
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- 210000003141 lower extremity Anatomy 0.000 title claims abstract description 68
- 230000007246 mechanism Effects 0.000 title claims abstract description 30
- 230000009545 invasion Effects 0.000 title claims abstract description 28
- 230000003139 buffering effect Effects 0.000 claims abstract description 17
- 230000000454 anti-cipatory effect Effects 0.000 claims abstract description 9
- 230000033001 locomotion Effects 0.000 claims abstract description 9
- 239000004033 plastic Substances 0.000 claims description 8
- 230000005489 elastic deformation Effects 0.000 claims description 5
- 239000004411 aluminium Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000007769 metal material Substances 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 2
- 239000002184 metal Substances 0.000 claims description 2
- 229910052751 metal Inorganic materials 0.000 claims description 2
- 210000003414 extremity Anatomy 0.000 abstract description 3
- 210000000629 knee joint Anatomy 0.000 description 19
- 238000005452 bending Methods 0.000 description 18
- 208000027418 Wounds and injury Diseases 0.000 description 13
- 230000006378 damage Effects 0.000 description 13
- 208000014674 injury Diseases 0.000 description 12
- 206010039203 Road traffic accident Diseases 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000009467 reduction Effects 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 238000009863 impact test Methods 0.000 description 4
- 210000003127 knee Anatomy 0.000 description 4
- 238000010008 shearing Methods 0.000 description 4
- 206010061225 Limb injury Diseases 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 210000002303 tibia Anatomy 0.000 description 1
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Abstract
The invention relates to a mechanism for preventing invasion of lower limbs of passers-by, which comprises a supporting arm system group assembled at the front end of a car body, wherein the supporting arm system group is provided with a first end part and a second end part; the first end part is connected with the car body, and the second end part is provided with a buffer part corresponding to the car body; the supporting arm system group comprises a pivot shaft and a braking bolt with flexibility; the pivot shaft is pivoted in the supporting arm system group so that the second end part performs pivoting swaying with a preset amplitude relative to the car body; the braking bolt is also arranged in the supporting arm system group and is used for limiting the pivoting swaying motions of the second end part; and thus, when the mechanism bears impact force, the buffer part can provide anticipatory buffering, and the braking bolt provides subsequent buffering to reduce the invasion level of the limbs of the passers-by.
Description
Technical field
The present invention relates to the device that a kind of pedestrian's of preventing lower limb are impacted, relate in particular to a kind of mechanism for preventing invasion of lower limbs of passers-by.
Background technology
Point out according to unexpected statistics of traffic accident for many years and Vehicular impact emulation experiment, when vehicle and pedestrian bump shown in Figure 1A to Fig. 1 C, the overwhelming majority produces bump with the safety lever of car body front end from pedestrian's knee position, and the knee position is subjected to powerful impact of the moment of safety lever, knee joint often produces the shearing distortion thereupon, cause knee joint with down to the limbs of one section in sole along the safety lever lower edge side to bending, invade in the space between car body chassis and ground, simultaneously continue to advance or brake too lately, still continue to impose side force facing to knee joint because of vehicle.
(X-axis is second time according to shown in the impact test figure shown in Figure 2, Y-axis is an angle), from bump moment to backward 0.025 second, lower limb can bend in the time of 0.014 second and rebound to maximum angle, lower limb exceed bending to greatest extent so must be checked before 0.014 second, avoid it excessively to invade body bottom, and as can be known by the waveform of Fig. 2, knee joint bears bump under no any protection mechanism the angle that bends inwards is about 15.3 degree, when so spending greater than 15 with the knee joint bending, promptly may cause the serious injury of knee joint, and the injury of this class often needs long answer in treatment, or still have cooresponding sequelae after replying, even the possibility that has or not method to cure.
For the unexpected degree that takes place and reduce injury that cuts down traffic accidents, the safety traffic mechanism of various countries is just at how reducing the impaired situation of lower limb in the traffic accident accident, vehicle design is worked out relevant safety requirements, for example require vehicle when clashing into lower limb accidentally, must allow the acceleration/accel maximum of shin bone can not surpass 150g, the kneed shearing that produces must not be out of shape and is higher than 6mm, and the knee joint bending angle must not be greater than 15 degree, reduces the degree of lower limb injury when taking place in that traffic accident is unexpected whereby;
And existing reduction lower limb are subjected in the safety device of damage wound, having a kind of is that safety lever and the nearly lower edge of car body front end at the car body front end respectively is provided with a buffer cell, when car body front end and lower limb generation bump, the then corresponding contact point with lower limb of this two buffer cell, injure to reduce direct impact so as to absorbing the momentum of alleviating bump, but but can't when being hit, reduce kneed bending angle effectively, thus at knee joint still may cause kneed grievous injury because of space at the bottom of the excessive intrusion car down to one section limbs of sole.
Harmful safety device still can't effectively reduce the knee joint bending angle because aforementioned reduction lower limb are wounded, avoid lower limb excessively to invade space at the bottom of the car, reduce the shortcoming of lower limb injury, this case contriver satisfies at this shortcoming and tries hard to improve, through research and experiment repeatedly, design the scheme of an improvement finally.
Summary of the invention
Technical problem underlying to be solved by this invention is, overcome reduction lower limb that prior art the exists harmful safety device of being wounded and still can't effectively reduce the knee joint bending angle, avoid lower limb excessively to invade space at the bottom of the car, reduce the unclear shortcoming of effect of lower limb injury, and provide a kind of mechanism for preventing invasion of lower limbs of passers-by, it effectively reduces the angle of knee joint side direction bending, avoids lower limb to cause more serious injury because of excessively invading body bottom.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of mechanism for preventing invasion of lower limbs of passers-by is characterized in that, it comprises a supporting arm system group that is mounted on the car body front end, and this supporting arm system group has first, second end, and this first end is to be connected in car body, and the corresponding car body of this second end is provided with a damper element; This supporting arm system group comprises a pivot, a flexible braking latch pin and the stop part of tool, this pivot is located between supporting arm system group, carry out the pivot pendulum for the second end with respect to car body, this braking latch pin also is located between supporting arm system group, pivot pendular motion in order to the restriction the second end, this stop part is located between supporting arm system group, in order to the predetermined amplitude of restriction the second end pivot pendulum.
Aforesaid mechanism for preventing invasion of lower limbs of passers-by, wherein first end offers the limit sliding chutes of arranging in pairs or groups mutually with this stop part, in order to the predetermined amplitude of restriction the second end pivot pendulum.
Aforesaid mechanism for preventing invasion of lower limbs of passers-by, wherein first end is provided with the first relative support arm, this the second end is provided with the second relative support arm, this damper element is positioned on second support arm, this pivot, this stop part and this braking latch pin all are to be located at this first, second arm room, this second support arm can borrow pivot to carry out the pivot pendulum on this first support arm, and borrows the predetermined amplitude of this stop part restriction pivot pendulum, and this braking latch pin then can limit the motion of second support arm.
Aforesaid mechanism for preventing invasion of lower limbs of passers-by, wherein first support arm offers the limit sliding chutes of arranging in pairs or groups mutually with described stop part, in order to limit the predetermined amplitude of described second support arm pivot pendulum.
Aforesaid mechanism for preventing invasion of lower limbs of passers-by, wherein braking latch pin has elastic limit to a certain degree, when impulsive force does not exceed the elastic limit scope, provides anticipatory buffering by damper element, and described braking latch pin then provides follow-up buffering with elastic deformation.
Aforesaid mechanism for preventing invasion of lower limbs of passers-by, wherein braking latch pin has elastic limit to a certain degree, when impulsive force exceeds the elastic limit scope, provides anticipatory buffering by this damper element, and described braking latch pin then provides follow-up buffering with plastic deformation.
Aforesaid mechanism for preventing invasion of lower limbs of passers-by, be hit power and after producing plastic deformation of braking latch pin wherein, described the second end or described second support arm carry out the pivot pendulum of predetermined amplitude along the impulsive force direction.
Aforesaid mechanism for preventing invasion of lower limbs of passers-by, wherein the elastic limit of braking latch pin is to be equal to the strength scope that pedestrian's lower limb can bear.
Aforesaid mechanism for preventing invasion of lower limbs of passers-by, wherein damper element contains rubber, and described braking latch pin material is a metal.
Aforesaid mechanism for preventing invasion of lower limbs of passers-by, wherein the metal material of braking latch pin is an aluminium.
When Vehicular impact arrives pedestrian's lower limb, if can slow down Huo Brake car in real time, make the impulsive force of generation not exceed the elastic limit scope (promptly surpassing the strength scope that pedestrian's lower limb can bear) of braking latch pin, the present invention provides anticipatory buffering by the damper element that contains rubber so, to reduce direct impact injury, the then corresponding remaining impulsive force of this braking latch pin is done an amount of elastic deformation provides follow-up buffering, to reduce the degree of knee joint side direction bending, avoid lower limb excessively to invade space at the bottom of the car and cause bigger injury;
Huo Brake car and for example really can't in time slow down, make the impulsive force of generation exceed the elastic limit scope (promptly surpassing the strength scope that pedestrian's lower limb can bear) of braking latch pin, the present invention is except being provided the anticipatory buffering by damper element so, this braking latch pin then produces plastic deformation, make the second end carry out the pivot pendulum to alleviate compressing to lower limb along the impulsive force direction, and this second end continues to alleviate impulsive force with damper element in the process of pivot pendulum, and the degree of reduction knee joint side direction bending, be to be subjected to the spacing of stop part and to stop the pivot pendular motion when the second end of pivot pendulum touches stop part, dwindle at the bottom of the car space whereby and form the block effect, excessively invade space at the bottom of the car to avoid lower limb;
From the above, the present invention can be along with the difference of impacting strength, carry out elder generation, back buffering with the elastic deformation of damper element and braking latch pin or the pivot pendulum of plastic deformation and the second end predetermined amplitude, effectively reduce the angle of knee joint side direction bending, avoid lower limb to cause more serious injury because of excessively invading body bottom.
Description of drawings
The present invention is further described below in conjunction with drawings and Examples.
Figure 1A to Fig. 1 C is the process scheme drawing of invading body bottom because of traffic accident pedestrian lower limb.
Fig. 2 is the mode chart of Vehicular impact test lower limb bending rate.
Fig. 3 is the structural representation of mechanism for preventing invasion of lower limbs of passers-by first embodiment of the present invention.
Fig. 4 is the structural representation of second embodiment of the invention.
Fig. 5 is the birds-eye view of third embodiment of the invention.
Fig. 6 and Fig. 7 are the forward and backward view of the present invention in car bump pedestrian lower limb.
The number in the figure explanation:
Supporting arm system group 2 first ends 21 first support arms 211
Limit sliding chutes 2111 the second ends 22 second support arms 221
Stop part 23 stop part 23a stop part 23b
The specific embodiment
The present invention is relevant a kind of mechanism for preventing invasion of lower limbs of passers-by, see also shown in Figure 3, be first embodiment of the invention, it comprises at least one supporting arm system group 2 that is mounted on car body 1 front end, this supporting arm system group 2 has first, second end 21,22, this first end 21 is to link to each other with the safety lever 10 of car body 1, this first end 21 is provided with a stop part 23,10 of this safety levers are offered the limit sliding chutes 101 for stop part 23 slippages, these the second end 22 corresponding car bodies 1 are provided with a damper element 24, and this damper element 24 contains rubber;
This supporting arm system group 2 still comprises a pivot 25 and tool one braking latch pin 26 flexible, that make with metallic material (as aluminium), this pivot 25 is located at 21,22 of first, second ends, carry out the pivot pendulum for the second end 22 with respect to car body 1, and the pivot amplitude of oscillation degree of this second end 22 is restricted by the slippage limit of stop part 23 in limit sliding chutes 101; This braking latch pin 26 also is located at 21,22 of first, second ends, and this braking latch pin 26 is in order to the pivot pendular motion of restriction the second end 22, and the elastic limit that this braking latch pin 26 has is to be equal to the strength scope that pedestrian's lower limb 3 can bear.
Referring again to shown in Figure 4, be second embodiment of the invention, wherein assembly is identical with first embodiment with effect, does not repeat them here, and below only is illustrated (following examples also same) with regard to different place.
In the present embodiment, this supporting arm system group 2 is provided with at least one first support arm 211 and at least one second support arm 221, this first support arm 211 is to be installed in relatively on the safety lever 10, this stop part 23a is positioned on first support arm 211, this first support arm 211 cooperates stop part 23a to offer a limit sliding chutes 2111 that supplies slippage, this second support arm 221 is to establish for 211 groups with cooresponding this first support arm, this damper element 24 is to be positioned on this second support arm 221, this pivot 25 and this braking latch pin 26 all be located at this first, 221 of second support arms, this second support arm 221 can borrow pivot 25 and stop part 23a restricted by the slippage limit of this limit sliding chutes 2111, and the pivot that carries out predetermined amplitude on this first support arm 211 is put, 26 motions that can limit second support arm 221 of this braking latch pin;
Please extremely shown in Figure 7 with reference to Fig. 5 separately again, be third embodiment of the invention, do on the method for predetermined amplitude swing at restriction second support arm 221, take off outside the mode divided by second embodiment, also can omit the limit sliding chutes 2111 that first support arm 211 is offered as present embodiment, be located at first support arm, 211 belows and stop part 23b changed, when making this pivot 25 put extremely to a certain degree, limited by the stop part 23b at this place, can only carry out the pivot pendulum of predetermined amplitude along impulsive force direction pivot.
Manner of execution of the present invention please cooperate shown in the accompanying drawing of first to the 3rd embodiment, when Vehicular impact arrives pedestrian's lower limb 3, if can slow down Huo Brake car in real time, make the impulsive force of generation not exceed the elastic limit scope (promptly surpassing the strength scope that pedestrian's lower limb 3 can bear) of braking latch pin 26, the present invention provides anticipatory buffering by the damper element 24 that contains rubber so, to reduce direct impact injury, this braking latch pin 26 then remaining impulsive force of correspondence is done an amount of elastic deformation follow-up buffering is provided, to reduce the degree of knee joint side direction bending, avoid lower limb 3 to invade space at the bottom of the cars and cause bigger injury.
Again, if can't in time slow down Huo Brake car, make the impulsive force of generation exceed the elastic limit scope (promptly surpassing the strength scope that pedestrian's lower limb 3 can bear) of braking latch pin 26, the present invention is except being provided the anticipatory buffering by damper element 24 so, 26 of this braking latch pin produce plastic deformation, make the second end 22 or second support arm 221 carry out the pivot pendulum to alleviate compressing to lower limb 3 along the impulsive force direction, and this second end 22 or second support arm 221 continue to alleviate impulsive force with damper element 24 in the process of pivot pendulum, and the degree of reduction knee joint side direction bending, the second end 22 when the pivot pendulum, second support arm 221 is because of the stop part 23 of reverse shuffle, the 23a limit sliding chutes 101 of conflicting, 2111 the other end (first, two embodiment), or second support arm 221 when touching stop part 23b (the 3rd embodiment), just be subjected to stop part 23,23a, the restriction of 23b and stop the pivot pendular motion, dwindle at the bottom of the car space whereby and form the block effect, excessively invade space at the bottom of the cars to avoid lower limb 3; And exceed the elastic range of braking latch pin 26 when impulsive force, this braking latch pin 26 produces therefore fracture and remove restriction to the second end 22 or second support arm 221 of plastic deformation, and the slippage of 221 corresponding stop parts 23 of this second end 22 or second support arm, 23a is carried out the pivot pendulum (first, second embodiment) of predetermined amplitude; Perhaps second support arm 221 carries out the pivot pendulum (the 3rd embodiment) of predetermined amplitude between the stop part 23b of the car front end and first support arm 211;
Table 1 is an observed data table of not installing Vehicular impact lower limb of the present invention.
| Knee bending angle (degree) | Knee joint shearing distortion (mm) | |
| Safety requirements | ??＜15 | ??＜6 |
| Former condition analysis result | ??15.3 | ??1.72 |
Table 2 is observed data tables of the Vehicular impact lower limb of installing different chassis heights of the present invention.
| Chassis height (mm) | Knee bending angle (degree) | Knee joint shearing distortion (mm) |
| ??180 | ??10.6 | ??2.77 |
| ??200 | ??11.5 | ??2.59 |
| ??220 | ??12.43 | ??2.52 |
| ??240 | ??13.02 | ??2.6 |
Please cooperate with reference to table 1 with shown in the table 2, table 1 is that vehicle is not being installed the experimental result of carrying out impact test under the condition of the present invention, vehicle strikes the pedestrian under such condition as shown in Table 1, and can't be effectively the bending angle of lower limb 3 be reduced to the standard that meets safety requirements, so lower limb 3 are still invaded space at the bottom of the car because of overflexing easily, cause serious injury; Table 2 item is that the vehicle of different chassis heights is being installed the result who carries out impact test under the condition of the present invention, chassis height has been installed behind the present invention between the vehicle between 180mm to 240mm as shown in Table 2, when bump takes place, can both obviously the knee joint bending angle be reduced in the standard value of safety requirements, avoid excessively space and reduce extent of injury at the bottom of the intrusion cars of lower limb 3.
The above, it only is preferred embodiment of the present invention, be not that the present invention is done any pro forma restriction, every foundation technical spirit of the present invention all still belongs in the scope of technical solution of the present invention any simple modification, equivalent variations and modification that above embodiment did.
In sum, the present invention is on structure design, use practicality and cost benefit, it is required to meet industry development fully, and the structure that is disclosed also is to have unprecedented innovation structure, have novelty, creativeness, practicality, the regulation that meets relevant patent of invention important document is so mention application in accordance with the law.
Claims (10)
1. a mechanism for preventing invasion of lower limbs of passers-by is characterized in that, it comprises a supporting arm system group that is mounted on the car body front end, and this supporting arm system group has first, second end, and this first end is to be connected in car body, and the corresponding car body of this second end is provided with a damper element;
This supporting arm system group comprises a pivot, a flexible braking latch pin and the stop part of tool, this pivot is located between supporting arm system group, carry out the pivot pendulum for the second end with respect to car body, this braking latch pin also is located between supporting arm system group, pivot pendular motion in order to the restriction the second end, this stop part is located between supporting arm system group, in order to the predetermined amplitude of restriction the second end pivot pendulum.
2. mechanism for preventing invasion of lower limbs of passers-by according to claim 1 is characterized in that: described first end offers the limit sliding chutes of arranging in pairs or groups mutually with this stop part, in order to the predetermined amplitude of restriction the second end pivot pendulum.
3. mechanism for preventing invasion of lower limbs of passers-by according to claim 1, it is characterized in that: described first end is provided with the first relative support arm, this the second end is provided with the second relative support arm, this damper element is positioned on second support arm, this pivot, this stop part and this braking latch pin all are to be located at this first, second arm room, this second support arm can borrow pivot to carry out the pivot pendulum on this first support arm, and borrows the predetermined amplitude of this stop part restriction pivot pendulum, and this braking latch pin then can limit the motion of second support arm.
4. mechanism for preventing invasion of lower limbs of passers-by according to claim 3 is characterized in that: described first support arm offers the limit sliding chutes of arranging in pairs or groups mutually with described stop part, in order to limit the predetermined amplitude of described second support arm pivot pendulum.
5. mechanism for preventing invasion of lower limbs of passers-by according to claim 1, it is characterized in that: described braking latch pin has elastic limit to a certain degree, when impulsive force does not exceed the elastic limit scope, provide anticipatory buffering by damper element, described braking latch pin then provides follow-up buffering with elastic deformation.
6. mechanism for preventing invasion of lower limbs of passers-by according to claim 1, it is characterized in that: described braking latch pin has elastic limit to a certain degree, when impulsive force exceeds the elastic limit scope, provide anticipatory buffering by this damper element, described braking latch pin then provides follow-up buffering with plastic deformation.
7. mechanism for preventing invasion of lower limbs of passers-by according to claim 6 is characterized in that: be hit power and after producing plastic deformation of described braking latch pin, described the second end or described second support arm carry out the pivot pendulum of predetermined amplitude along the impulsive force direction.
8. according to claim 5 or 6 described mechanism for preventing invasion of lower limbs of passers-by, it is characterized in that: the elastic limit of described braking latch pin is to be equal to the strength scope that pedestrian's lower limb can bear.
9. mechanism for preventing invasion of lower limbs of passers-by according to claim 1 is characterized in that: described damper element contains rubber, and described braking latch pin material is a metal.
10. mechanism for preventing invasion of lower limbs of passers-by according to claim 9 is characterized in that: the metal material of described braking latch pin is an aluminium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810167907A CN101722917B (en) | 2008-10-17 | 2008-10-17 | Mechanism for preventing invasion of lower limbs of passers-by |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200810167907A CN101722917B (en) | 2008-10-17 | 2008-10-17 | Mechanism for preventing invasion of lower limbs of passers-by |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101722917A true CN101722917A (en) | 2010-06-09 |
| CN101722917B CN101722917B (en) | 2012-10-03 |
Family
ID=42444652
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200810167907A Expired - Fee Related CN101722917B (en) | 2008-10-17 | 2008-10-17 | Mechanism for preventing invasion of lower limbs of passers-by |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101722917B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102555978A (en) * | 2010-12-28 | 2012-07-11 | 通用汽车环球科技运作有限责任公司 | Front region of a vehicle and vehicle |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007168594A (en) * | 2005-12-21 | 2007-07-05 | Kojima Press Co Ltd | Pedestrian protection device for vehicle |
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2008
- 2008-10-17 CN CN200810167907A patent/CN101722917B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102555978A (en) * | 2010-12-28 | 2012-07-11 | 通用汽车环球科技运作有限责任公司 | Front region of a vehicle and vehicle |
| CN102555978B (en) * | 2010-12-28 | 2016-08-03 | 通用汽车环球科技运作有限责任公司 | Automobile head and automobile |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101722917B (en) | 2012-10-03 |
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Granted publication date: 20121003 |