CN106198037A - A kind of bonnet of motor car collision triggers test system and method for testing - Google Patents
A kind of bonnet of motor car collision triggers test system and method for testing Download PDFInfo
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- CN106198037A CN106198037A CN201510230790.7A CN201510230790A CN106198037A CN 106198037 A CN106198037 A CN 106198037A CN 201510230790 A CN201510230790 A CN 201510230790A CN 106198037 A CN106198037 A CN 106198037A
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- bonnet
- false touch
- stimulating food
- thing
- triggering
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Abstract
The invention discloses a kind of bonnet of motor car collision and trigger test system, including bonnet, grenade instrumentation, bounce device and external control system, bounce device is arranged on bonnet rear end, external control system is connected by sensor with bonnet, in the scheduled time before triggering thing or false touch stimulating food and colliding with bonnet, bounce device is in running order, by the rear end jack-up of bonnet.The invention also discloses a kind of bonnet of motor car collision and trigger method of testing.The bonnet of motor car collision that the present invention provides triggers test system and method for testing; can be specifically designed for triggering and false triggering; calculate triggering thing infringement data and false touch stimulating food infringement data; so that bonnet is configured; protection pedestrian can be opened when triggering; it is not turned on during false triggering, keeps normal driving, improve safety.
Description
Technical field
The present invention relates to carry active bonnet technical field of measurement and test, particularly relate to a kind of car engine
Lid collision triggers test system and method for testing.
Background technology
Active bonnet is technological achievement application leading in the design of vehicle passive security, mesh
Before the test method also not do not developed for the pedestrian protecting with this type design vehicle and corresponding
False triggering control strategy.
During vehicle development, the design of pedestrian protecting need to be considered, by experimental test go out trigger or
The threshold value of false triggering, controls the unlatching of bonnet so that bonnet and electromotor and other
There is between parts enough spaces, absorb collision energy, protect pedestrian.
Due to, prior art is not the most specifically designed for this type of active bonnet and tests door is set
Threshold value, causes under there are some false triggering situations, such as stone hits, little bird collisions etc. feelings
Under shape, bonnet is unlocked, and affects vehicle drive.
Summary of the invention
It is an object of the invention to overcome defect of the prior art, it is provided that a kind of special to active
The bonnet of motor car collision that bonnet carries out testing triggers test system and method for testing.
Technical solution of the present invention provides a kind of bonnet of motor car collision to trigger test system, including engine
Cover, for triggering thing or the grenade instrumentation of false touch stimulating food to the projection of described bonnet, be used for described
The bounce device upspring in the rear end of bonnet and for collecting the described triggering thing or described mistake being projected
Trigger the external control system of thing and the infringement data of described bonnet collision rift, described bounce device
Being arranged on described bonnet rear end, described external control system and described bonnet pass through sensor
Connect, the scheduled time before described triggering thing or described false touch stimulating food collide with described bonnet
In, described bounce device is in running order, by the rear end jack-up of described bonnet.
Further, described bounce device is ignition formula cylinder, and described ignition formula cylinder includes first
Cylinder body, first piston bar and gunpowder, described first piston bar is slidably disposed in described first cylinder
Internal, described gunpowder is positioned at the bottom of described first cylinder body；When described gunpowder is detonated, described
First piston bar described in the gas push that gunpowder produces moves, and makes described ignition formula cylinder be in work
State.
Further, described bounce device is pneumatic type cylinder, and described pneumatic type cylinder includes second
Cylinder body and the second piston rod, described second piston rod is slidably disposed in described second cylinder body,
The bottom of described second cylinder body is connected with external air source, and is provided with on described second piston rod
Bleeder port；Before described triggering thing or false touch stimulating food collide with described bonnet, described pneumatic type
Cylinder keeps in running order.
Further, described bonnet rear end is provided with two described bounce devices.
Further, described grenade instrumentation includes the piston rod for being projected by described triggering thing,
Described grenade instrumentation also includes the fixture for clamping described false touch stimulating food, and described fixture is connected to institute
State on piston rod.
Further, described triggering thing is simulation head dummy；Described false touch stimulating food be bird, basketball,
Stone, branch, animal or refuse receptacle.
Technical solution of the present invention also provides for a kind of bonnet of motor car collision and triggers method of testing, including such as
Lower step: S1: bonnet is placed on appointment position, and makes that its front end is relative with grenade instrumentation to be set
Put；S2: mark the target area needing to carry out testing on described bonnet；S3: by institute
State grenade instrumentation in described target area, project triggering thing or false touch stimulating food, and at described triggering thing
Or described false touch stimulating food collide with described bonnet before the scheduled time in, make bounce device be in
Duty, by the rear end jack-up of described bonnet；S4: in described triggering thing or described false triggering
After thing collides with described bonnet, collect described triggering thing or described mistake by external control system
Trigger the infringement data of thing；S5: damage data and described at the triggering thing having collected described triggering thing
After the false touch stimulating food infringement data of false touch stimulating food, complete test.
Further, when described bounce device uses ignition formula cylinder, described step S3 is also wrapped
Include step S31: taken according to upspring time, the flight that triggers thing or false touch stimulating food of described bonnet
Between, set the ignition time, when described triggering thing or false touch stimulating food flight time reach described ignition
Between time, ignite described ignition formula cylinder.
Further, when described bounce device uses pneumatic type cylinder, described step S3 is also wrapped
Include step S32: before described triggering thing or described false touch stimulating food collide with described bonnet, keep
Described pneumatic type cylinder is in running order.
Further, step S6 is also included: according to the described triggering thing infringement data collected and false touch
Stimulating food infringement data, adjust described bounce device；When described bounce device receives in described false touch
When stimulating food damages the data in scope of data, it is in off working state, keeps at described bonnet
In normal condition；When described bounce device receives the number in described triggering thing infringement scope of data
According to time, it is in running order, by the rear end jack-up of described bonnet.
Use technique scheme, have the advantages that
The bonnet of motor car collision that the present invention provides triggers test system and method for testing, can be special
For triggering and false triggering, calculate triggering thing infringement data and false touch stimulating food infringement data, thus
Draw trigger gate threshold value and false triggering threshold value, so that bonnet to be configured so that it is can touch
Send out time open protection pedestrian, be not turned on during false triggering, keep normal driving, improve safety and
Drive convenience.
Accompanying drawing explanation
Fig. 1 triggers the schematic diagram of test system for the bonnet of motor car collision that the present invention provides；
Fig. 2 is the structural representation that the rear end of bonnet is provided with ignition formula cylinder；
Fig. 3 is the schematic diagram projecting dummy head type on the bonnet shown in Fig. 2；
Fig. 4 is the schematic diagram that the bonnet shown in Fig. 2 is changed to opening B from closure state A；
Fig. 5 is the structural representation of ignition formula cylinder；
Fig. 6 is the structural representation that the rear end of bonnet is provided with pneumatic type cylinder；
Fig. 7 is the schematic diagram projecting dummy head type on the bonnet shown in Fig. 6；
Fig. 8 is the structural representation of pneumatic type cylinder；
Fig. 9 is the structural representation of bird fixture；
Figure 10 is the structural representation of basketball fixture；
Figure 11 is the structural representation of stone fixture；
Figure 12 is the structural representation of branch fixture；
Figure 13 is the structural representation of animal fixture.
Reference synopsis:
1-bonnet；11-rear end；12-front end；
2-grenade instrumentation；21-fixture；22-piston rod；
23-bird fixture；231-barrel；24-basketball fixture；
241-front end barrel；242-rear end barrel；25-stone fixture；
251-barrel；26-branch fixture；261-holding tank；
27-animal fixture；271-cylindrical portion；3-bounce device；
31-ignites formula cylinder；311-the first cylinder body；312-first piston bar；
313-gunpowder；The quick-fried device of 32-point；33-goes between；
34-pneumatic type cylinder；341-the second cylinder body；342-the second piston rod；
343-bleeder port；35-external air source；36-pressure maintaining valve；
37-trachea coupler；38-trachea；4-external control system；
41-sensor；5-simulates head dummy；6-bird；
7-basketball；8-stone；9-branch.
Detailed description of the invention
Further illustrate the detailed description of the invention of the present invention below in conjunction with the accompanying drawings.The most identical zero
Parts are presented with like reference characters.It should be noted that the word used in describing below
"front", "rear", "left", "right", "up" and "down" refer to the direction in accompanying drawing, word " interior " and " outward "
Refer respectively to the direction towards or away from particular elements geometric center.
The bonnet of motor car collision that the present invention provides triggers test system and method for testing, is mainly used in
Active bonnet is tested, triggers or the threshold value of false triggering to measure, will in the present invention
Above-mentioned threshold value referred to as damages data, with according to infringement data or the concrete scope of threshold value, comes
Set active bonnet be unlocked or remain turned-off.
When bonnet is unlocked, shape between electromotor or other parts in itself and enging cabin
Become certain space, be used for absorbing collision energy, protect pedestrian.
As it is shown in figure 1, the bonnet of motor car collision that the present invention provides triggers test system, including drawing
Hold up lid 1, for triggering thing or the grenade instrumentation 2 of false touch stimulating food to bonnet 1 projection, for drawing
Hold up the bounce device 3 upspring of rear end 11 of lid 1 and for collecting the triggering thing or false triggering being projected
The external control system 4 of the infringement data of thing and bonnet 1 collision rift.
Bounce device 3 is arranged on the rear end 11 of bonnet 1, external control system 4 and bonnet
1 is connected by sensor 41.
In the scheduled time before triggering thing or false touch stimulating food and colliding with bonnet 1, bounce device 3
In running order, by rear end 11 jack-up of bonnet 1.
This bonnet 1 is active bonnet, and its front end 12 is movably arranged on car body, its rear end
Bounce device 3 it is provided with on 11.
As shown in Fig. 3-4, Fig. 7, Fig. 9-12, the triggering thing in the present invention refers to according to the rules, its
With bonnet 1 collision rift, need to be upspring by bonnet 1 or by the object of its rear end 11 jack-up, should
Object can be dummy head type 5, preferably to simulate the collision of people and bonnet.Mistake in the present invention
Trigger thing and refer to according to the rules, itself and bonnet 1 collision rift, bonnet 1 keeps normal switching-off,
Ensure normal vehicle operation, it is to avoid the object of false triggering, this object can be bird 6, basketball 7,
Stone 8, branch 9, animal or refuse receptacle etc..
External control system 4 is connected by sensor 41 with bonnet 1, is used for collecting collision rift and touches
The infringement data of stimulating food or the infringement data of false touch stimulating food.
In the scheduled time before triggering thing or false touch stimulating food and colliding with bonnet 1, bounce device 3
In running order, by rear end 11 jack-up of bonnet 1, when triggering thing or the collision of false touch stimulating food are drawn
After holding up lid 1, owing to the rear end 11 of bonnet is in jack-up state, its parts with bottom it
Between there is certain space, can absorb false touch stimulating food or trigger thing transmission come collision energy, reduce
Infringement.
After collision, collected infringement data or the false triggering triggering thing by external control system 4
The infringement data of thing, the structure of bonnet 1 is improved according to above-mentioned infringement data, until
Meet requirement.
The main collection point of above-mentioned infringement data is acceleration, deflection, impact force etc. aspect.
According to the triggering thing infringement data collected and false touch stimulating food infringement data, dress of upspringing can be adjusted
Put 3；When bounce device 3 receives the data in false touch stimulating food infringement scope of data, it is in
Off working state, keeps bonnet 1 to be in normal condition, it is ensured that normal vehicle operation；When upspringing
Device 3 receives when the data triggered in thing infringement scope of data, and it is in running order, will
Rear end 11 jack-up of bonnet 1, protects pedestrian.
Thus, the bonnet of motor car collision that the present invention provides triggers test system, can be specifically designed for
Trigger and false triggering, calculate triggering thing infringement data and false touch stimulating food infringement data, thus draw
Trigger gate threshold value and false triggering threshold value, to be configured bonnet so that it is can be when triggering
Open protection pedestrian, be not turned on during false triggering, keep normal driving, improve safety and driving
Convenience.
It is preferred that shown in 2-5, bounce device 3 is ignition formula cylinder 31, ignites formula cylinder 31 and wrap
Including the first cylinder body 311, first piston bar 312 and gunpowder 313, first piston bar 312 is slidably
Being arranged in the first cylinder body 311, gunpowder 313 is positioned at the bottom of the first cylinder body 311.
When gunpowder 313 is detonated, the gas push first piston bar 312 that gunpowder 313 produces moves
Dynamic, make ignition formula cylinder 31 in running order.
The upper end of first piston bar 312 is connected with the rear end 11 of bonnet 1, and its lower end is positioned at first
In cylinder body 311, gunpowder 313 is positioned at the bottom of the first cylinder body 311, and quick-fried with point by lead-in wire 33
Device 32 connects.In the suitable time, igniting gunpowder 313 by putting quick-fried device 32, it produces
Gas push first piston bar 312 moves, and makes ignition formula cylinder 31 in running order, by engine
Rear end 11 jack-up of lid 1.As shown in Figure 4, bonnet 1 is converted to open shape from closure state A
State B.
The process using ignition formula cylinder 31 to carry out testing or test is referred to as dynamic test or experiment,
Benefit be can simulating reality crash scenario to greatest extent, the data recorded are more accurate.
It is preferred that as shown in figs 6-8, bounce device 3 is pneumatic type cylinder 34, pneumatic type cylinder
34 include the second cylinder body 341 and the second piston rod 342, and the second piston rod 342 configures slidably
In the second cylinder body 341, the bottom of the second cylinder body 341 is connected with external air source 35, and
It is provided with bleeder port 343 on two piston rods 342.
Before triggering thing or false touch stimulating food and bonnet 1 collision, pneumatic type cylinder 34 keeps being in
Duty.
The upper end of the second piston rod 342 is connected with the rear end of bonnet 1, its lower slide ground configuration
In the second cylinder body 341, the bottom of the second cylinder body 341 is by trachea 38 with external air source 35 even
Connect, and on cylinder 38, be provided with pressure maintaining valve 36 and trachea coupler 37, to ensure stable gas pressure
Be easy to supply to multiple pneumatic type cylinders 34.
It is additionally provided with bleeder port 343 on second piston rod 342, after supplying in the second cylinder body 341,
Second piston rod 342 is in running order, and the bleeder port 343 above it is positioned at the second cylinder body 341
Outside.When triggering thing or false touch stimulating food and bonnet 1 collision rift, the second piston rod 342 is being subject to
Under External Force Acting, or move down, when bleeder port 343 is in the second cylinder body 341, the
Gas in two cylinder bodies 341 gushes, and the second piston rod 342 is retracted in the second cylinder body 341.
This bleeder port 343 can be arranged as required to the appointment position on the second piston rod 342,
To determine the length of the action time of pneumatic type cylinder 34.
Before triggering thing or false touch stimulating food and bonnet 1 collision, pneumatic type cylinder 34 keeps being in
Duty.After triggering thing or false touch stimulating food and colliding with bonnet 1, specify the time or test
Cheng Hou, pneumatic type cylinder 34 is in off working state.
The process using pneumatic type cylinder 34 to carry out testing or test is referred to as static test or experiment,
Benefit is to reuse, cost-effective.
It is preferred that as shown in Figure 2 and Figure 6, the rear end 11 of bonnet 1 is provided with two and upsprings
Device 3, to ensure that the rear end of bonnet 1 is by stable jack-up.
It is preferred that as shown in Fig. 1 and Fig. 9, grenade instrumentation 2 includes for being projected by triggering thing
Piston rod 22, grenade instrumentation 2 also includes the fixture 21 for clamping false touch stimulating food, fixture 21
It is connected on piston rod 22.
When projection triggers thing, when being specially projection simulation head dummy 5, simulation head dummy 5 is directly placed
On piston rod 22, piston rod 22 moves under dynamic action, is launched by simulation head dummy 5, mould
In plan head dummy 5 drops to specify region on bonnet 1 in the way of freely falling body, test.
When projecting false touch stimulating food, clamping false touch stimulating food by fixture 21, fixture 21 is connected to
On piston rod 22, during projection, false touch stimulating food drops in fixture 21 in the way of freely falling body
In specifying region on bonnet 1, test.
As shown in figures 10-13, fixture 21 includes bird fixture 23, basketball fixture 24, stone fixture
25, branch fixture 26, animal fixture 27 etc..
Bird fixture 23 includes the cavity formed by barrel 231, and bird 6 is placed in this cavity.
Basketball fixture 24 includes the cylindric cavity surrounded by front end barrel 241 and by rear end barrel
The 242 hemispherical cavitys surrounded, basketball 7 is placed in hemispherical cavity and cylindric cavity.
Stone fixture 25 includes the cavity formed by barrel 251, and stone 8 is placed in cavity.
Branch fixture 26 is included in the holding tank 261 that side is arranged, and branch is placed on holding tank 261
In.
Animal fixture 27 includes the multiple cylindrical portion 271 formed, and animal is placed on flexible portion 271
In.
To sum up, the bonnet of motor car collision that the present invention provides triggers test system, can be to triggering thing
Carry out accurate calculation of measured data with false touch stimulating food, carry out setpoint engine lid, it is to avoid false triggering, it is ensured that OK
Car safety.
The bonnet of motor car collision that the present invention provides triggers method of testing, and as shown in figures 1-8, it includes
Following steps:
S1: bonnet 1 is placed on appointment position, and makes its front end 12 relative with grenade instrumentation 2
Arrange；
S2: mark the target area needing to carry out testing on bonnet 1；
S3: project triggering thing or false touch stimulating food in target area by grenade instrumentation 2, and touching
Stimulating food or false touch stimulating food collide with bonnet 1 before the scheduled time in, make bounce device 3 be in
Duty, by rear end 11 jack-up of bonnet 3；
S4: after triggering thing or false touch stimulating food and colliding with bonnet 1, by external control system 4
Collect and trigger thing or the infringement data of false touch stimulating food；
S5: collecting the false touch stimulating food infringement triggering thing infringement data and false touch stimulating food of triggering thing
After data, complete test.
It is preferred that as shown in Figure 2-5, when bounce device 3 uses ignition formula cylinder 31, step
S3 also includes step S31: according to bonnet 1 upspring the time, trigger flying of thing or false touch stimulating food
Row required time, sets the ignition time, when triggering thing or the false touch stimulating food flight time reaches to ignite
Between time, ignite this ignition formula cylinder 31 so that it is by rear end 11 jack-up of bonnet 1, and make work as
When the rear end of bonnet 1 is opened into extreme higher position, trigger thing or false touch stimulating food just with bonnet 1
Collision.
It is preferred that as shown in figs 6-8, when bounce device 3 uses pneumatic type cylinder 34, step
S3 also includes step S32: before triggering thing or false touch stimulating food and bonnet collision, keep gas
Dynamic formula cylinder 34 is in running order.
It is preferred that also include step S6: triggering thing infringement data and false touch stimulating food according to collecting are damaged
Evil data, adjust bounce device 3；
When bounce device 3 receives the data in false touch stimulating food infringement scope of data, it is in
Off working state, keeps bonnet 1 to be in normal condition；
When bounce device 3 receives in the data triggered in thing infringement scope of data, it is in work
Make state, by rear end 11 jack-up of bonnet 1.
To sum up, the bonnet of motor car collision that the present invention provides triggers method of testing, can be to triggering thing
Carry out accurate calculation of measured data with false touch stimulating food, carry out setpoint engine lid, it is to avoid false triggering, it is ensured that OK
Car safety.
As required, above-mentioned each technical scheme can be combined, to reach best-of-breed technology effect.
Above-described is only principle and the preferred embodiment of the present invention.It should be pointed out that, for this
For the those of ordinary skill in field, on the basis of the principle of the invention, it is also possible to make some its
Its modification, also should be regarded as protection scope of the present invention.
Claims (10)
1. bonnet of motor car collision triggers test system, it is characterised in that include bonnet,
For triggering thing or the grenade instrumentation of false touch stimulating food to the projection of described bonnet, be used for described engine
The bounce device upspring of rear end of lid and for collecting the described triggering thing or described false triggering being projected
The external control system of the infringement data of thing and described bonnet collision rift,
Described bounce device is arranged on the rear end of described bonnet, described external control system and institute
State bonnet to be connected by sensor,
The scheduled time before described triggering thing or described false touch stimulating food collide with described bonnet
In, described bounce device is in running order, by the rear end jack-up of described bonnet.
Bonnet of motor car the most according to claim 1 collision triggers test system, and its feature exists
In, described bounce device is ignition formula cylinder, described ignition formula cylinder include the first cylinder body, first
Piston rod and gunpowder, described first piston bar is slidably disposed in described first cylinder body, described
Gunpowder is positioned at the bottom of described first cylinder body；
When described gunpowder is detonated, described in the gas push that described gunpowder produces, first piston bar moves
Dynamic, make described ignition formula cylinder in running order.
Bonnet of motor car the most according to claim 1 collision triggers test system, and its feature exists
In, described bounce device is pneumatic type cylinder, and described pneumatic type cylinder includes the second cylinder body and second
Piston rod, described second piston rod is slidably disposed in described second cylinder body, described second cylinder
The bottom of body is connected with external air source, and is provided with bleeder port on described second piston rod；
Before described triggering thing or false touch stimulating food collide with described bonnet, described pneumatic type cylinder
Keep in running order.
Bonnet of motor car the most according to claim 1 collision triggers test system, and its feature exists
In, the rear end of described bonnet is provided with two described bounce devices.
Bonnet of motor car the most according to claim 1 collision triggers test system, and its feature exists
In, described grenade instrumentation includes the piston rod for being projected by described triggering thing, and described projection fills
Putting the fixture also included for clamping described false touch stimulating food, described fixture is connected on described piston rod.
6. collide to trigger according to the bonnet of motor car described in any claim in claim 1-5 and survey
Test system, it is characterised in that described triggering thing is simulation head dummy；
Described false touch stimulating food is bird, basketball, stone, branch, animal or refuse receptacle.
7. a bonnet of motor car collision triggers method of testing, it is characterised in that comprise the steps:
S1: bonnet is placed on appointment position, and makes its front end be oppositely arranged with grenade instrumentation；
S2: mark the target area needing to carry out testing on described bonnet；
S3: project triggering thing or false touch stimulating food in described target area by described grenade instrumentation,
And in the scheduled time before described triggering thing or described false touch stimulating food collide with described bonnet,
Make bounce device in running order, by the rear end jack-up of described bonnet；
S4: after described triggering thing or described false touch stimulating food collide with described bonnet, by outward
Portion's control system collects described triggering thing or the infringement data of described false touch stimulating food；
S5: damage data and the false touch of described false touch stimulating food at the thing that triggers having collected described triggering thing
After stimulating food infringement data, complete test.
A kind of bonnet of motor car collision the most according to claim 7 triggers method of testing, and it is special
Levy and be, when described bounce device uses ignition formula cylinder, described step S3 also includes step
S31: according to described bonnet upspring the time, trigger thing or the flight required time of false touch stimulating food, if
Surely ignite the time, when described triggering thing or false touch stimulating food flight time reach the described ignition time,
Ignite described ignition formula cylinder.
A kind of bonnet of motor car collision the most according to claim 7 triggers method of testing, and it is special
Levy and be, when described bounce device uses pneumatic type cylinder, described step S3 also includes step
S32: before described triggering thing or described false touch stimulating food collide with described bonnet, keep described gas
Dynamic formula cylinder is in running order.
A kind of bonnet of motor car collision the most according to claim 7 triggers method of testing, its
It is characterised by, also includes step S6: according to the described triggering thing infringement data collected and false touch stimulating food
Infringement data, adjust described bounce device；
When described bounce device receives the data in described false touch stimulating food infringement scope of data,
It is in off working state, keeps described bonnet to be in normal condition；
When described bounce device receives the data in described triggering thing infringement scope of data, its
In running order, by the rear end jack-up of described bonnet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510230790.7A CN106198037A (en) | 2015-05-07 | 2015-05-07 | A kind of bonnet of motor car collision triggers test system and method for testing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510230790.7A CN106198037A (en) | 2015-05-07 | 2015-05-07 | A kind of bonnet of motor car collision triggers test system and method for testing |
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| Publication Number | Publication Date |
|---|---|
| CN106198037A true CN106198037A (en) | 2016-12-07 |
Family
ID=57459815
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510230790.7A Pending CN106198037A (en) | 2015-05-07 | 2015-05-07 | A kind of bonnet of motor car collision triggers test system and method for testing |
Country Status (1)
| Country | Link |
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| CN (1) | CN106198037A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112197928A (en) * | 2020-09-14 | 2021-01-08 | 中国第一汽车股份有限公司 | Head type recovery device for pedestrian protection head type test |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112197928A (en) * | 2020-09-14 | 2021-01-08 | 中国第一汽车股份有限公司 | Head type recovery device for pedestrian protection head type test |
| CN112197928B (en) * | 2020-09-14 | 2022-12-27 | 中国第一汽车股份有限公司 | Head type recovery device for pedestrian protection head type test |
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Application publication date: 20161207 |