CN111452751A - Vehicle, vehicle trigger and vehicle collision protection system - Google Patents
Vehicle, vehicle trigger and vehicle collision protection system Download PDFInfo
- Publication number
- CN111452751A CN111452751A CN201910099490.8A CN201910099490A CN111452751A CN 111452751 A CN111452751 A CN 111452751A CN 201910099490 A CN201910099490 A CN 201910099490A CN 111452751 A CN111452751 A CN 111452751A
- Authority
- CN
- China
- Prior art keywords
- piston rod
- vehicle
- trigger
- vehicle trigger
- shell
- 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
- 230000007246 mechanism Effects 0.000 claims abstract description 34
- 239000003814 drug Substances 0.000 claims abstract description 21
- 238000001914 filtration Methods 0.000 claims description 4
- 238000013016 damping Methods 0.000 claims description 2
- 230000001960 triggered effect Effects 0.000 description 9
- 208000027418 Wounds and injury Diseases 0.000 description 5
- 230000006378 damage Effects 0.000 description 5
- 208000014674 injury Diseases 0.000 description 5
- 230000004308 accommodation Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- 230000000903 blocking effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 229940079593 drug Drugs 0.000 description 2
- 239000012535 impurity Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000003116 impacting effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 231100000252 nontoxic Toxicity 0.000 description 1
- 230000003000 nontoxic effect Effects 0.000 description 1
- 238000007789 sealing Methods 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
- B60R21/38—Protecting non-occupants of a vehicle, e.g. pedestrians using means for lifting bonnets
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Superstructure Of Vehicle (AREA)
Abstract
A vehicle, a vehicle trigger and a vehicle collision protection system, the vehicle trigger comprising: shell, ignition mechanism, product gas medicine, first piston rod and second piston rod, wherein: the second piston rod is positioned in the shell and comprises a first accommodating cavity; the first piston rod is located in the first accommodating cavity, and after the ignition mechanism ignites the gas producing medicine, the first piston rod extends out of the first accommodating cavity under the pushing of gas produced by the gas producing medicine and drives the second piston rod to move relative to the shell. By adopting the scheme, the size of the vehicle trigger can be reduced.
Description
Technical Field
The embodiment of the invention relates to the field of vehicles, in particular to a vehicle, a vehicle trigger and a vehicle collision protection system.
Background
With the popularity of automobiles, more and more people own automobiles. Some collisions are inevitable during the use of the automobile. When an automobile collides with a pedestrian, some automobiles are provided with an outside-automobile pedestrian protection system in a frontal collision in order to reduce the injury to the pedestrian.
At present, when a vehicle collides frontally, an external pedestrian protection system mainly has two types: the first is to install safety air bag outside the car; the second is to lift the rear part (close to the wiper) of the front engine cover of the automobile to the designed height instantly so as to buffer the collision force between the human body and the front engine cover when the human body falls on the front engine cover, thereby reducing the injury to the human body. The second type of pedestrian protection system for frontal collision generally comprises a controller (Electronic Control Unit, ECU), a hood hinge, a trigger (Actuator), a front hood of an automobile, and the like.
However, the current trigger on the market is bulky and requires a large space.
Disclosure of Invention
The technical problem solved by the embodiment of the invention is how to reduce the volume of the vehicle trigger.
To solve the above technical problem, an embodiment of the present invention provides a vehicle trigger, including: shell, ignition mechanism, product gas medicine, first piston rod and second piston rod, wherein: the second piston rod is positioned in the shell and comprises a first accommodating cavity; the first piston rod is located in the first accommodating cavity, and after the ignition mechanism ignites the gas producing medicine, the first piston rod extends out of the first accommodating cavity under the pushing of gas produced by the gas producing medicine and drives the second piston rod to move relative to the shell.
Optionally, the first end of the second piston rod is provided with an opening, the diameter of the opening is smaller than the inner diameter of the first accommodating cavity, and the first end of the first piston rod can be inserted into the opening.
Optionally, the second end of the first piston rod includes a boss, and a diameter of the boss is larger than a diameter of the first end of the first piston rod and a diameter of the opening.
Optionally, the outer diameter of the second end of the second piston rod is larger than the outer diameter of the first end of the second piston rod.
Optionally, the housing has a second accommodating cavity and a blocking portion, the blocking portion is used for blocking the second end of the second piston rod, and the second piston rod is located in the second accommodating cavity.
Optionally, the vehicle trigger further includes: and the buffer mechanism is arranged between the gas producing medicine and the ignition mechanism.
Optionally, the buffer mechanism is located in the corresponding first accommodating cavity at the second end of the second piston rod.
Optionally, the vehicle trigger further includes: and the end cap is connected with one end face of the shell, is positioned between the shell and the second piston rod and is contacted with the first end of the first piston rod and the first end of the second piston rod.
Optionally, the vehicle trigger further includes: and the filtering mechanism is arranged between the first piston rod and the gas producing medicine and is positioned in the first accommodating cavity.
Optionally, the vehicle trigger further includes: and the fixed bracket is connected with the shell.
Optionally, the vehicle trigger further includes: a seal disposed between the housing and the second piston rod.
The embodiment of the invention also provides a vehicle collision protection system, which comprises any one of the vehicle triggers, a controller and a hinge, wherein: the hinge is respectively connected with the body and the front engine cover of the vehicle; the controller is suitable for sending an ignition control signal to an ignition mechanism of the vehicle trigger when the front collision of the vehicle is detected so as to control the ignition mechanism to ignite and control the vehicle trigger to abut against the hinge, so that the hinge drives the front engine cover to lift.
The embodiment of the invention also provides a vehicle comprising any one of the vehicle triggers.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
a vehicle trigger includes a first piston rod and a second piston rod, the first piston rod being located within the second piston rod when the vehicle trigger is not triggered. After the vehicle trigger is triggered, after the ignition mechanism ignites the gas generating medicine, under the action of gas generated by the gas generating medicine, the first piston rod can extend out of the first accommodating cavity and can drive the second piston rod to extend out of the shell, so that the required distance can be realized, and meanwhile, the volume of the vehicle trigger can be effectively reduced because the first piston rod is positioned in the second piston rod when the vehicle trigger is not triggered.
Drawings
Fig. 1 is a schematic structural diagram of a vehicle trigger according to an embodiment of the present invention.
Detailed Description
As described above, the conventional trigger is large in size and requires a large space.
In an embodiment of the invention, the vehicle trigger comprises a first piston rod and a second piston rod, the first piston rod being located within the second piston rod when the vehicle trigger is not triggered. After the vehicle trigger is triggered, after the ignition mechanism ignites the gas generating medicine, under the action of gas generated by the gas generating medicine, the first piston rod can extend out of the first accommodating cavity and can drive the second piston rod to extend out of the shell, so that the required distance can be realized, and meanwhile, the volume of the vehicle trigger can be effectively reduced because the first piston rod is positioned in the second piston rod when the vehicle trigger is not triggered.
In order to make the aforementioned objects, features and advantages of the embodiments of the present invention more comprehensible, specific embodiments accompanied with figures are described in detail below.
The embodiment of the invention provides a vehicle collision protection system which can comprise a vehicle trigger, a controller, a hinge and the like.
In a specific implementation, the hinges are respectively connected with a body of the vehicle and a front engine cover of the vehicle. When the controller anticipates or detects a frontal collision of a pedestrian, the controller generates an ignition control signal and sends the ignition control signal to an ignition mechanism of the vehicle trigger in order to reduce injury to the collided pedestrian. The ignition mechanism can ignite according to the ignition control signal to control the vehicle trigger to abut against the hinge, so that the hinge drives the front engine cover to lift. In practical applications, the vehicle trigger may directly lift the front hood.
In particular implementations, the ignition mechanism may include a wire harness, an igniter, a short circuit ring, a heat sensitive material, pyrotechnic material, and the like. The ignition control signal sent by the controller can be transmitted to the ignition tool through the wire harness, and the ignition tool is ignited through the short circuit ring, the thermosensitive material, the pyrotechnic composition and the like.
Adopt vehicle collision protection system, when judging that pedestrian frontal collision will take place, perhaps when detecting to take place pedestrian frontal collision, can pass through vehicle trigger promotes the front engine hood of vehicle to take a definite place the altitude to when pedestrian's head or health hit the automobile engine hood, huge pressure makes trigger exhaust pressure release mechanism accelerate the gas outgoing in the trigger, and the front engine hood takes place the displacement, increases the effort time of human body and front engine hood, reduces the effort, thereby alleviates the injury of collision to the pedestrian, in order to reach the purpose of protecting the pedestrian at a frontal collision in-process.
Referring to fig. 1, a schematic structural diagram of a vehicle trigger according to an embodiment of the present invention is shown. The following describes a specific structure of a vehicle trigger and a vehicle collision protection system with reference to fig. 1.
In particular implementations, the vehicle trigger may include: the gas generating device comprises a shell 13, an ignition mechanism 11, a gas generating medicine 12, a first piston rod 14 and a second piston rod 15.
The second piston rod 15 is located within the housing 13. The second piston rod 15 is provided with a first accommodation chamber 151. The first piston rod 14 is located in the first accommodation chamber 151.
In particular implementations, the gas generant composition 12 can be ignited after the ignition device of the ignition mechanism 11 is ignited. The ignited gas generant 12 can generate non-toxic and harmless high-temperature and high-pressure gas which can push the first piston rod 14 to move. The first piston rod 14 is pushed by the high-temperature and high-pressure gas generated by the gas producing drug 12 to extend out of the first accommodating cavity 151, and drives the second piston rod 15 to move relative to the housing 13. After the second piston rod 15 moves to a certain distance, it can prop against the hinge and push the hinge to a set position, and the front hood is lifted to a required height through the hinge.
In an embodiment of the present invention, the gas generant composition 12 is an elongated gas generant composition, the speed of the gas released by the combustion of the elongated gas generant composition is adjustable, and the pressure released by the vehicle trigger is more stable.
According to the scheme, the vehicle trigger comprises a first piston rod 14 and a second piston rod 15, and the first piston rod 14 is located in the second piston rod 15 when the vehicle trigger is not triggered. After the vehicle trigger is triggered and the ignition mechanism 11 ignites the gas generant 12, under the action of high-temperature and high-pressure gas generated by the gas generant 12, the first piston rod 14 can extend out of the first accommodating cavity 151 and can drive the second piston rod 15 to extend out of the housing 13, so that the same distance can be ensured, and meanwhile, the volume of the vehicle trigger can be effectively reduced because the first piston rod 14 is positioned in the second piston rod 15 when the vehicle trigger is not triggered. Compared with the trigger in the prior art, the vehicle trigger provided by the embodiment of the invention has the advantages that the front engine cover is lifted by the same height, the size is relatively small, the structure is simple, and the cost can be reduced.
In a specific implementation, the first end 152 of the second piston rod 15 is provided with an opening, the diameter of which is smaller than the inner diameter of the first accommodating chamber 151, and the first end 142 of the first piston rod 14 can be inserted into the opening.
The second end of the first piston rod 14 includes a boss 141, and the diameter of the boss 141 is greater than the diameter of the first end 142 of the first piston rod 14 and the diameter of the opening, so that when the first piston rod 14 moves to the maximum distance in the second piston rod 15, the boss 141 of the second end of the first piston rod 14 can block the second piston rod 15, thereby driving the second piston rod 15 to move.
The housing 13 has a second receiving cavity 131 and an abutting portion 132. The second piston rod 15 is located in the second accommodating cavity 131, and when the second piston rod 15 moves in the second accommodating cavity 131, the abutting portion 132 may abut against the second end 153 of the second piston rod 15. The second end 153 of the second piston rod 15 has an outer diameter larger than the outer diameter of the first end 152 of the second piston rod 15. After the second piston rod 15 moves the maximum distance in the second accommodating cavity 131, the second end 153 of the second piston rod 15 can abut against the abutting portion 132, so that the second piston rod 15 can be prevented from sliding out of the second accommodating cavity 131.
On the basis of the above embodiments of the present invention, in an embodiment of the present invention, the first piston rod 14 may be provided with a vent hole. When the current bonnet receives pedestrian's impact force, can accelerate the release of the pressure in the vehicle trigger, also accelerate the first gaseous effluvium that holds the intracavity promptly to preceding bonnet can slowly fall down, in order to increase pedestrian and preceding bonnet's the effect time of power, reduces the effort, thereby alleviates the injury that the collision caused to the pedestrian.
On the basis of the above embodiments of the present invention, in an embodiment of the present invention, a buffer mechanism (not shown in the drawings) may be disposed between the gas generant 12 and the ignition mechanism 11, so as to prevent the gas generant 12 from directly impacting the ignition mechanism 11 under the pushing of the first piston rod 14 when the first piston rod 14 is returned to the first accommodating chamber 151.
For example, the damping mechanism is located in the corresponding first accommodation chamber 151 at the second end 153 of the second piston rod 15.
In particular implementations, the vehicle trigger may also include an end cap 17. In one embodiment of the present invention, the end cap 17 is connected to an end surface of the housing 13, located between the housing 13 and the second piston rod 15, and contacts the first end 142 of the first piston rod 14 and the first end 152 of the second piston rod 15. In another embodiment of the present invention, the end cap 17 is located outside the housing 13 and contacts the outer end surface of the housing 13, the first end 142 of the first piston rod 14 and the first end 152 of the second piston rod 15.
The end cap 17, which may be made of plastic, covers the first piston rod 14 and the second piston rod 15 for sealing the first piston rod 14 and the housing 13 to ensure the air tightness of the vehicle trigger.
The first piston rod 14 is pushed by the high-temperature and high-pressure gas generated by the gas producing drug 12 to eject the end cap 17 out of the first accommodating cavity 151.
On the basis of the above embodiments of the present invention, in an embodiment of the present invention, the vehicle trigger may further include a filter mechanism. The filtering mechanism is disposed between the first piston rod 14 and the gas generant 12 and located in the first receiving cavity 151. The filtering mechanism can filter impurities in high-temperature and high-pressure gas generated by the gas producing medicine 12, and the impurities are prevented from entering the first accommodating cavity 151 to influence the movement of the first piston rod 14.
In particular implementations, the vehicle trigger may also include a fixed bracket 16 coupled to the housing 13. The vehicle trigger may be secured to the vehicle body by a mounting bracket 16.
In an embodiment of the present invention, the vehicle trigger may further comprise a seal (not shown) arranged between the housing 13 and the second piston rod 15 to improve the air-tightness between the second piston rod 15 and the housing 13.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (13)
1. A vehicle trigger, comprising: shell, ignition mechanism, product gas medicine, first piston rod and second piston rod, wherein:
the second piston rod is positioned in the shell and comprises a first accommodating cavity;
the first piston rod is located in the first accommodating cavity, and after the ignition mechanism ignites the gas producing medicine, the first piston rod extends out of the first accommodating cavity under the pushing of gas produced by the gas producing medicine and drives the second piston rod to move relative to the shell.
2. The vehicle trigger of claim 1, wherein the first end of the second piston rod is provided with an opening having a diameter smaller than an inner diameter of the first receiving chamber, and the first end of the first piston rod is insertable into the opening.
3. The vehicle trigger of claim 2, wherein the second end of the first piston rod includes a boss having a diameter greater than a diameter of the first end of the first piston rod and a diameter of the opening.
4. The vehicle trigger of claim 2, wherein an outer diameter of the second end of the second piston rod is greater than an outer diameter of the first end of the second piston rod.
5. The vehicle trigger of claim 4, wherein the housing has a second receiving cavity and a stop for stopping the second end of the second piston rod, the second piston rod being located in the second receiving cavity.
6. The vehicle trigger according to any one of claims 1 to 5, characterized by further comprising: and the buffer mechanism is arranged between the gas producing medicine and the ignition mechanism.
7. The vehicle trigger of claim 6, wherein the damping mechanism is located within a corresponding first receiving cavity at the second end of the second piston rod.
8. The vehicle trigger of claim 1, further comprising: and the end cap is connected with one end face of the shell, is positioned between the shell and the second piston rod and is contacted with the first end of the first piston rod and the first end of the second piston rod.
9. The vehicle trigger of claim 1, further comprising: and the filtering mechanism is arranged between the first piston rod and the gas producing medicine and is positioned in the first accommodating cavity.
10. The vehicle trigger of claim 1, further comprising: and the fixed bracket is connected with the shell.
11. The vehicle trigger of claim 1, further comprising: a seal disposed between the housing and the second piston rod.
12. A vehicle crash protection system, comprising: the vehicle trigger, controller, hinge of any of claims 1-11, wherein:
the hinge is respectively connected with the body and the front engine cover of the vehicle;
the controller is suitable for sending an ignition control signal to an ignition mechanism of the vehicle trigger when the front collision of the vehicle is detected so as to control the ignition mechanism to ignite and control the vehicle trigger to abut against the hinge, so that the hinge drives the front engine cover to lift.
13. A vehicle, characterized by comprising: the vehicle trigger of any one of claims 1 to 11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910099490.8A CN111452751A (en) | 2019-01-31 | 2019-01-31 | Vehicle, vehicle trigger and vehicle collision protection system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910099490.8A CN111452751A (en) | 2019-01-31 | 2019-01-31 | Vehicle, vehicle trigger and vehicle collision protection system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111452751A true CN111452751A (en) | 2020-07-28 |
Family
ID=71674400
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910099490.8A Pending CN111452751A (en) | 2019-01-31 | 2019-01-31 | Vehicle, vehicle trigger and vehicle collision protection system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111452751A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060118348A1 (en) * | 2002-11-28 | 2006-06-08 | Lennart Haglund | Safety arrangement |
| CN1895938A (en) * | 2005-06-23 | 2007-01-17 | 马自达汽车株式会社 | Safety device of vehicle |
| JP2008120325A (en) * | 2006-11-15 | 2008-05-29 | Nippon Plast Co Ltd | Cowl top cover and non-occupant protection device |
| CN101746345A (en) * | 2008-12-22 | 2010-06-23 | 比亚迪股份有限公司 | Vehicular pedestrian protector and vehicle comprising same |
| CN102245909A (en) * | 2008-11-26 | 2011-11-16 | Sme公司 | Actuator for triggering a stroke of a safety device incorporated in a motor vehicle for protecting a pedestrian in the event of a frontal impact |
| CN103476642A (en) * | 2011-04-18 | 2013-12-25 | 奥托立夫开发公司 | Hood lifting arrangement |
| CN209454701U (en) * | 2019-01-31 | 2019-10-01 | 上海汽车集团股份有限公司 | Vehicle, vehicle trigger and vehicle collision guard system |
-
2019
- 2019-01-31 CN CN201910099490.8A patent/CN111452751A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060118348A1 (en) * | 2002-11-28 | 2006-06-08 | Lennart Haglund | Safety arrangement |
| CN1895938A (en) * | 2005-06-23 | 2007-01-17 | 马自达汽车株式会社 | Safety device of vehicle |
| JP2008120325A (en) * | 2006-11-15 | 2008-05-29 | Nippon Plast Co Ltd | Cowl top cover and non-occupant protection device |
| CN102245909A (en) * | 2008-11-26 | 2011-11-16 | Sme公司 | Actuator for triggering a stroke of a safety device incorporated in a motor vehicle for protecting a pedestrian in the event of a frontal impact |
| CN101746345A (en) * | 2008-12-22 | 2010-06-23 | 比亚迪股份有限公司 | Vehicular pedestrian protector and vehicle comprising same |
| CN103476642A (en) * | 2011-04-18 | 2013-12-25 | 奥托立夫开发公司 | Hood lifting arrangement |
| CN209454701U (en) * | 2019-01-31 | 2019-10-01 | 上海汽车集团股份有限公司 | Vehicle, vehicle trigger and vehicle collision guard system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5656858B2 (en) | Triggered stroke actuators used in car safety devices to protect pedestrians in the event of a frontal collision with a pedestrian | |
| EP4349660A1 (en) | Vehicle collision shock attenuation device | |
| CN108583495B (en) | Automobile passive safety system | |
| CN111674352B (en) | Trigger of automatic lifting system of automobile front cover | |
| CN111452751A (en) | Vehicle, vehicle trigger and vehicle collision protection system | |
| CN200988466Y (en) | Anti-collision device for vehicle | |
| CN209454701U (en) | Vehicle, vehicle trigger and vehicle collision guard system | |
| CN212332586U (en) | Automatic lifting trigger for automobile front cover | |
| CN212243261U (en) | Trigger type bouncing mechanism for automobile engine cover | |
| CN212332588U (en) | Trigger is lifted to automobile front shroud | |
| CN108909554B (en) | Active crumple self-locking device of side collision seat and seat | |
| GB2379194A (en) | Emergency responsive vehicle bumper | |
| CN211417185U (en) | Automobile rear-end collision buffer device | |
| CN212332589U (en) | Trigger for instantaneous lifting of automobile engine cover | |
| CN208198586U (en) | New-energy automobile energy-storage system collision protection airbag apparatus | |
| KR100645206B1 (en) | Return typed hood lift device in vehicle | |
| CN214874694U (en) | Pyrotechnic pedestrian protection device for automobile engine hood | |
| CN216034243U (en) | Automobile front-mounted active buffer air bag device | |
| CN212332585U (en) | Jacking device for instantly lifting automobile front cover | |
| KR100558872B1 (en) | Hood hinge apparatus of a vehicle | |
| CN219312711U (en) | Vehicle collision object protection device and system | |
| CN117864056A (en) | Double-piston jack for instantaneous lifting of automobile engine cover | |
| KR20230002052U (en) | Bumper airbag for vehicle | |
| CN217892765U (en) | Cold air type gas generator for side air bag | |
| KR970002542Y1 (en) | Bumper for a vehicle |
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 |