CN112918422A - Pedestrian shank protection device - Google Patents
Pedestrian shank protection device Download PDFInfo
- Publication number
- CN112918422A CN112918422A CN202110240012.1A CN202110240012A CN112918422A CN 112918422 A CN112918422 A CN 112918422A CN 202110240012 A CN202110240012 A CN 202110240012A CN 112918422 A CN112918422 A CN 112918422A
- Authority
- CN
- China
- Prior art keywords
- pedestrian
- connecting plate
- shank
- protection device
- cross beam
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000005096 rolling process Methods 0.000 claims description 12
- 230000001681 protective effect Effects 0.000 claims description 9
- 230000001360 synchronised effect Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 3
- 238000007906 compression Methods 0.000 claims description 3
- 210000001699 lower leg Anatomy 0.000 abstract description 50
- 210000002414 leg Anatomy 0.000 abstract description 20
- 238000005452 bending Methods 0.000 abstract description 7
- 210000003127 knee Anatomy 0.000 abstract description 6
- 210000003041 ligament Anatomy 0.000 abstract description 5
- 210000002303 tibia Anatomy 0.000 abstract description 5
- 208000027418 Wounds and injury Diseases 0.000 abstract description 2
- 230000006378 damage Effects 0.000 abstract description 2
- 208000014674 injury Diseases 0.000 abstract description 2
- 210000003141 lower extremity Anatomy 0.000 description 8
- 210000001264 anterior cruciate ligament Anatomy 0.000 description 3
- 210000000988 bone and bone Anatomy 0.000 description 3
- 238000011161 development Methods 0.000 description 3
- 210000002967 posterior cruciate ligament Anatomy 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000004197 pelvis Anatomy 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 210000003423 ankle Anatomy 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000003190 augmentative effect Effects 0.000 description 1
- 244000309466 calf Species 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 210000001624 hip Anatomy 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
- 239000011664 nicotinic acid Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 210000001694 thigh bone Anatomy 0.000 description 1
- 210000000689 upper leg Anatomy 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R19/00—Wheel guards; Radiator guards, e.g. grilles; Obstruction removers; Fittings damping bouncing force in collisions
- B60R19/02—Bumpers, i.e. impact receiving or absorbing members for protecting vehicles or fending off blows from other vehicles or objects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60R—VEHICLES, VEHICLE FITTINGS, OR VEHICLE PARTS, NOT OTHERWISE PROVIDED FOR
- B60R21/00—Arrangements or fittings on vehicles for protecting or preventing injuries to occupants or pedestrians in case of accidents or other traffic risks
- B60R21/34—Protecting non-occupants of a vehicle, e.g. pedestrians
- B60R2021/346—Protecting non-occupants of a vehicle, e.g. pedestrians means outside vehicle body
Abstract
The invention discloses a pedestrian shank protection device which comprises a support arranged on a front protection cross beam, a first connecting plate rotationally connected with the support, a supporting rod connected with the first connecting plate and used for being in contact with the leg of a pedestrian in collision, a second connecting plate synchronously rotating with the first connecting plate and having the same rotating direction with the first connecting plate, and a pedestrian shank protection cross beam connected with the second connecting plate and used for supporting the shank of the pedestrian in collision, wherein the pedestrian shank protection cross beam is positioned below the front protection cross beam, and the supporting rod is positioned above the front protection cross beam. The pedestrian shank protection device can greatly reduce the injury of the pedestrian shank, can realize that the shank protection cross beam moves downwards and forwards when a vehicle collides with a pedestrian, and can support the optimal part of the pedestrian shank in time. Therefore, the extension of the ligament of the leg and the knee and the bending moment of the tibia of the pedestrian can be greatly reduced.
Description
Technical Field
The invention belongs to the technical field of automobile collision, and particularly relates to a pedestrian shank protection device.
Background
With the research on pedestrian protection in recent years, the influence of the upper body of a human body on the lower limbs of the body when a pedestrian collides with a vehicle is not considered in the conventional Flex-PLI flexible leg, the lower limb movement response of the flexible leg is different from the real lower limb movement response of the human body, and the high front bumper vehicle type is more obvious. The aPLI leg type is formed by adding a rotatable and sliding SUBP (simplified Upper Body part) module on the Upper part of a Flex-PLI flexible leg, and the mass of the module is 11.8 kg. The module considers the shape of the pelvis, the connection motion relationship between the pelvis and the thighbone and the bending moment action of the body part above the hip point on the lower limbs during collision. In addition, the aPLI leg type also optimizes the bionic performance of the lower limbs. In terms of quality, the leg type mass distribution is closer to the lower limbs of the human body by adjusting the mass distribution of bones and muscles; structurally, femoral deviation is increased, the geometric shape of the whole skeleton of an impact surface is changed into a shape with a curved surface similar to the lower limb of a real human body so as to simulate the impact contact surface of bones, and meanwhile, an Anterior Cruciate Ligament (ACL) and a Posterior Cruciate Ligament (PCL) are changed into parallel arrangement so as to simulate the anterior cruciate ligament and the posterior cruciate ligament of the knee more truly; in the lower part of the leg, a joint with larger freedom degree is added to simulate ankle movement; in terms of stiffness, the bending stiffness of the femur is enhanced by augmenting the bone core structure in the joint. According to the characteristics of the aPLI leg shape, in order to more truly simulate the ground clearance of the lower limb of the human body, the ground clearance of the leg shape is reduced from 75mm to 25mm during the test. To accommodate the development of the aPLI leg, a larger front bumper energy absorbing space and a lower and forward lower leg protection beam are required. In the development of a new vehicle type, the requirement of a vehicle approach angle and the falling range limit of the ground clearance of a front bumper cannot meet the requirement of the arrangement position of a shank beam.
The existing pedestrian shank protection device mainly has the following three structural forms:
1. a plastic crossbeam connected to the auxiliary frame of the chassis through a crossbeam support bracket;
2. a metal circular tube cross beam connected to the chassis auxiliary frame through a cross beam support bracket;
3. the transverse and vertical staggered reinforcing structure ribs of the lower engine guard plate play a role in protecting pedestrians. A drawback of this type of installation is the development of pedestrian leg protection that is not adaptable to high bumper models.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art. Therefore, the invention provides a pedestrian lower leg protection device, aiming at reducing the extension amount of knee ligaments of the lower leg of a pedestrian and the bending moment of the tibia when a vehicle collides with the pedestrian.
In order to achieve the purpose, the invention adopts the technical scheme that: pedestrian's shank protection device, including setting up the support on the preceding beam of protecting, rotate the first connecting plate of being connected with the support, be connected with first connecting plate and be used for the bracing piece with pedestrian's shank contact when the emergence collision, with first connecting plate synchronous revolution and with the same second connecting plate of the direction of rotation of first connecting plate and be connected with the second connecting plate and be used for providing the pedestrian's shank protection crossbeam that supports to pedestrian's shank when the emergence collision, pedestrian's shank protection crossbeam is located the below of preceding beam of protecting, the bracing piece is located the top of preceding beam of protecting.
The length direction of the pedestrian shank protecting beam is parallel to the length direction of the front protecting beam and the supporting rod.
And a return spring is arranged between the second connecting plate and the front protective beam and is a compression spring.
The support comprises a rotating shaft arranged on the front protection beam and a rolling bearing arranged on the rotating shaft, the lower end of the first connecting plate is connected with the rolling bearing, the upper end of the first connecting plate is connected with the supporting rod, the upper end of the second connecting plate is connected with the rolling bearing, and the lower end of the second connecting plate is connected with the pedestrian shank protection beam.
The length of the second connecting plate is greater than that of the first connecting plate.
The pedestrian shank protection device can greatly reduce the injury of the pedestrian shank, can realize that the shank protection cross beam moves downwards and forwards when a vehicle collides with a pedestrian, and can support the optimal part of the pedestrian shank in time. Therefore, the extension of the ligament of the leg and the knee and the bending moment of the tibia of the pedestrian can be greatly reduced.
Drawings
The description includes the following figures, the contents shown are respectively:
FIG. 1 is a schematic view of the construction of a pedestrian calf protection arrangement according to the invention;
labeled as: 1. a support bar; 2. the pedestrian shank protection beam; 3. a first connecting plate; 4. a second connecting plate; 5. a rolling bearing; 6. a rotating shaft; 7. a return spring; 8. a front bumper beam; 9. a front bumper.
Detailed Description
The following detailed description of the embodiments of the present invention will be given with reference to the accompanying drawings for a purpose of helping those skilled in the art to more fully, accurately and deeply understand the concept and technical solution of the present invention and to facilitate its implementation.
It should be noted that, in the following embodiments, the "first" and "second" do not represent an absolute distinction relationship in structure and/or function, nor represent a sequential execution order, but merely for convenience of description.
As shown in fig. 1, the invention provides a pedestrian shank protection device, which comprises a support arranged on a front protection cross beam 8, a first connecting plate 3 rotatably connected with the support, a support rod 1 connected with the first connecting plate 3 and used for contacting with the leg of a pedestrian in a collision, a second connecting plate 4 synchronously rotating with the first connecting plate 3 and having the same rotating direction as the first connecting plate 3, and a pedestrian shank protection cross beam 2 connected with the second connecting plate 4 and used for supporting the shank of the pedestrian in the collision, wherein the pedestrian shank protection cross beam 2 is positioned below the front protection cross beam 8, and the support rod 1 is positioned above the front protection cross beam 8.
Specifically, as shown in fig. 1, the longitudinal direction of the pedestrian lower leg protection cross member 2 is parallel to the longitudinal directions of the front fender cross member 8 and the support bar 1, and the longitudinal direction of the front fender cross member 8 is parallel to the width direction of the vehicle. The front protective skin is provided with a avoiding hole for the pedestrian shank protective beam 2 to pass through, the avoiding hole is located below the front protective beam 8, and the avoiding hole is a through hole which penetrates through the front protective skin.
When pedestrian's shank strikes the front end of the vehicle that traveles, bracing piece 1 can take place the contact with pedestrian's shank, bracing piece 1 can take place the rotation after receiving the striking of pedestrian's shank, pedestrian's shank promotes bracing piece 1 rearward movement, first connecting plate 3 and bracing piece 1 synchronous revolution, meanwhile, second connecting plate 4 and pedestrian's shank protection crossbeam 2 and first connecting plate 3 and bracing piece 1 synchronous revolution, pedestrian's shank protection crossbeam 2 stretches out in the hole of dodging on the skin is protected in the past, pedestrian's shank protection crossbeam 2 realizes forward and downstream, pedestrian's shank protection crossbeam 2 stretches out the back and contacts with pedestrian's shank towards the place ahead of front bumper, in order to provide the support to pedestrian's shank. When the pedestrian collides with the automobile, the pedestrian shank protection device can greatly reduce the rear displacement of the pedestrian shank to the tail of the automobile, so that the ligament elongation and the tibia bending moment on the inner side of the knee of the pedestrian are reduced.
As shown in fig. 1, a return spring 7 is arranged between the second connecting plate 4 and the front protection beam 8, the return spring 7 is connected with the second connecting plate 4 and the front protection beam 8, and the return spring 7 is a cylindrical coil spring and is a compression spring. The return spring 7 is used for returning the pedestrian lower leg protection cross beam 2, and after the support rod 1 is separated from the leg of the pedestrian, the return spring 7 applies elastic acting force for rotating the second connecting plate 4, so that the pedestrian lower leg protection cross beam 2 can rotate to the inside of the front bumper.
As shown in fig. 1, the support comprises a rotating shaft 6 arranged on a front protection beam 8 and a rolling bearing 5 arranged on the rotating shaft 6, the lower end of a first connecting plate 3 is connected with the rolling bearing 5, the upper end of the first connecting plate 3 is connected with a support rod 1, the upper end of a second connecting plate 4 is connected with the rolling bearing 5, and the lower end of the second connecting plate 4 is connected with a pedestrian lower leg protection beam 2. The rotating shaft 6 is fixedly connected with the front protection cross beam 8, the axis of the rotating shaft 6 is parallel to the length direction of the front protection cross beam 8, and the rotating shaft 6 is located at the middle position of the front protection cross beam 8 in the length direction. Antifriction bearing 5 installs on rotation axis 6, the lower extreme and the antifriction bearing 5 welded connection of first connecting plate 3, the upper end and the antifriction bearing 5 welded connection of second connecting plate 4, first connecting plate 3 and second connecting plate 4 are located the rear of preceding guarantor crossbeam 8, and first connecting plate 3 stretches out towards antifriction bearing 5's top, and second connecting plate 4 stretches out towards antifriction bearing 5's below, and the length of second connecting plate 4 is greater than the length of first connecting plate 3.
When the automobile collides with a pedestrian in the driving process, when the shanks of the pedestrian collide with the support rod 1, the support rod 1 rotates around the rotating shaft 6 through the first connecting plate 3 welded on the rolling bearing 5, the rotating shaft 6 is welded on the front protective beam 8, the shank protective beam 2 of the pedestrian synchronously rotates around the rotating shaft 6 through the second connecting plate 4 welded on the rolling bearing 5, downward and forward movement is realized, and the lower legs of the pedestrian are supported through the avoidance holes in the lower surface of the front protective skin.
The mechanism is favorable for keeping the collision posture of the leg of the pedestrian stable, and realizes the horizontal pushing action of the leg, thereby reducing the bending moment of the tibia and the elongation of knee ligaments, and after the collision, the supporting rod 1 and the leg protecting beam 22 of the pedestrian return to the initial state position through the return spring 77.
The invention is described above with reference to the accompanying drawings. It is to be understood that the specific implementations of the invention are not limited in this respect. Various insubstantial improvements are made by adopting the method conception and the technical scheme of the invention; the present invention is not limited to the above embodiments, and can be modified in various ways.
Claims (5)
1. Pedestrian's shank protection device, its characterized in that: including setting up the support on the crossbeam is protected to the front, rotate the first connecting plate of being connected with the support, be connected with first connecting plate and be used for the bracing piece with pedestrian's shank contact when bumping into, with first connecting plate synchronous revolution and with the same second connecting plate of the direction of rotation of first connecting plate and be connected with the second connecting plate and be used for providing the pedestrian shank protection crossbeam that supports to pedestrian's shank when bumping into, pedestrian's shank protection crossbeam is located the below of crossbeam is protected in the front, the bracing piece is located the top of crossbeam is protected in the front.
2. The pedestrian lower leg protection device according to claim 1, characterized in that: the length direction of the pedestrian shank protecting beam is parallel to the length direction of the front protecting beam and the supporting rod.
3. The pedestrian lower leg protection device according to claim 1 or 2, characterized in that: and a return spring is arranged between the second connecting plate and the front protective beam and is a compression spring.
4. The pedestrian lower leg protection device according to claim 1 or 2, characterized in that: the support comprises a rotating shaft arranged on the front protection beam and a rolling bearing arranged on the rotating shaft, the lower end of the first connecting plate is connected with the rolling bearing, the upper end of the first connecting plate is connected with the supporting rod, the upper end of the second connecting plate is connected with the rolling bearing, and the lower end of the second connecting plate is connected with the pedestrian shank protection beam.
5. The pedestrian lower leg protection device according to claim 4, wherein: the length of the second connecting plate is greater than that of the first connecting plate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110240012.1A CN112918422A (en) | 2021-03-04 | 2021-03-04 | Pedestrian shank protection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110240012.1A CN112918422A (en) | 2021-03-04 | 2021-03-04 | Pedestrian shank protection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112918422A true CN112918422A (en) | 2021-06-08 |
Family
ID=76173314
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110240012.1A Pending CN112918422A (en) | 2021-03-04 | 2021-03-04 | Pedestrian shank protection device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112918422A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001001848A (en) * | 1999-06-22 | 2001-01-09 | Toyota Central Res & Dev Lab Inc | Pedestrian crash protection device for vehicle |
| US8950800B1 (en) * | 2013-11-11 | 2015-02-10 | Ford Global Technologies, Llc | Deployable lower leg stiffener for pedestrian protection |
| CN204956396U (en) * | 2015-09-23 | 2016-01-13 | 北汽福田汽车股份有限公司 | Shank anticollision girder construction and vehicle that has this structure |
| CN105899407A (en) * | 2013-12-30 | 2016-08-24 | Tk控股公司 | Active Knee Protection System |
| CN207059967U (en) * | 2017-07-14 | 2018-03-02 | 宝沃汽车（中国）有限公司 | Front bumper assembly and there is its vehicle |
| CN209617091U (en) * | 2019-03-28 | 2019-11-12 | 宜宾凯翼汽车有限公司 | A kind of pedestrian shank protection structure |
| CN209667025U (en) * | 2019-01-14 | 2019-11-22 | 北京宝沃汽车有限公司 | Pedestrian shank protective device and vehicle |
-
2021
- 2021-03-04 CN CN202110240012.1A patent/CN112918422A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001001848A (en) * | 1999-06-22 | 2001-01-09 | Toyota Central Res & Dev Lab Inc | Pedestrian crash protection device for vehicle |
| US8950800B1 (en) * | 2013-11-11 | 2015-02-10 | Ford Global Technologies, Llc | Deployable lower leg stiffener for pedestrian protection |
| CN105899407A (en) * | 2013-12-30 | 2016-08-24 | Tk控股公司 | Active Knee Protection System |
| CN204956396U (en) * | 2015-09-23 | 2016-01-13 | 北汽福田汽车股份有限公司 | Shank anticollision girder construction and vehicle that has this structure |
| CN207059967U (en) * | 2017-07-14 | 2018-03-02 | 宝沃汽车（中国）有限公司 | Front bumper assembly and there is its vehicle |
| CN209667025U (en) * | 2019-01-14 | 2019-11-22 | 北京宝沃汽车有限公司 | Pedestrian shank protective device and vehicle |
| CN209617091U (en) * | 2019-03-28 | 2019-11-12 | 宜宾凯翼汽车有限公司 | A kind of pedestrian shank protection structure |
Non-Patent Citations (1)
| Title |
|---|
| 方锐等: "基于行人小腿碰撞保护的乘用车前端设计", 《科技导报》 * |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20210608 |
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| RJ01 | Rejection of invention patent application after publication |