CN206826759U - A kind of automatic bounce device of pyrotechnic automobile engine cover - Google Patents
A kind of automatic bounce device of pyrotechnic automobile engine cover Download PDFInfo
- Publication number
- CN206826759U CN206826759U CN201720541975.4U CN201720541975U CN206826759U CN 206826759 U CN206826759 U CN 206826759U CN 201720541975 U CN201720541975 U CN 201720541975U CN 206826759 U CN206826759 U CN 206826759U
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- Prior art keywords
- support tube
- push rod
- separation sleeve
- spring
- pyrotechnic
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Abstract
It the utility model is related to technical field of vehicle safety, disclose a kind of automatic bounce device of pyrotechnic automobile engine cover, including support tube, the push rod being located in support tube, the lower end of the support tube is provided with separation sleeve, the upper end closed of the separation sleeve, squib is provided with the lower ending opening of separation sleeve, combustion chamber is formed between squib and separation sleeve bottom, gas generant composition in accordance is provided with described combustion chamber, the lower end of the push rod is provided with piston, the upper end of the support tube is provided with through hole, the upper end of the push rod is stretched into through hole, the lower end outside of the push rod is arranged with spring, the lower end side of the support tube is provided with the steam vent of the space connection in support tube.The utility model has the good beneficial effect of simple in construction, response quickly, stability.
Description
Technical field
It the utility model is related to technical field of vehicle safety, more particularly to a kind of pyrotechnic automobile engine cover is upspring dress automatically
Put.
Background technology
Automotive safety technology be automotive field research important topic, automobile in the process of moving if colliding pedestrian,
Pedestrian head easily directly occurs rigid collision and causes head injuries with automobile engine cover.In order to effectively prevent pedestrian head
With rigid collision occurs to automobile engine cover, some vehicles set bounce device in bonnet at present, such as increase spring, when
When colliding, automobile engine cover is upspring by spring, so that elastic collision between pedestrian head and bonnet, but
Spring corresponding speed is slow, and pedestrian is very short with bonnet collision time, usually a few tens of milliseconds, and by spring by engine caping
The response speed risen is slower, and safety coefficient is low, stability is poor.Such as China Patent Publication No.：CN101791973A, publication date
On August 4th, 2010, discloses a kind of new automobile safety device, for protect pedestrian and passengers inside the car safety it is new
Automobile engine cover, in the patent when Vehicle-pedestrian impact, bonnet is jacked up by a set of mechanical mechanism, it is slow so as to play
Suction the effect of energy.Its weak point is that a whole set of mechanical mechanism is complicated, and cost is high, bonnet limited inside space, for a lot
Vehicle installation is limited；Length of a whole set of mechanical structure response time, stability are poor simultaneously.
Utility model content
The utility model is in order to solve above mentioned problem of the prior art, there is provided a kind of simple in construction, response quickly, steady
The qualitative good automatic bounce device of pyrotechnic automobile engine cover.
To achieve these goals, the utility model adopts the following technical scheme that：
A kind of automatic bounce device of pyrotechnic automobile engine cover, including support tube, the push rod that is located in support tube, the branch
The lower end of support cylinder is provided with separation sleeve, the upper end closed of the separation sleeve, and squib, electric point are provided with the lower ending opening of separation sleeve
Combustion chamber is formed between fire tube and separation sleeve bottom, gas generant composition in accordance is provided with described combustion chamber, the lower end of the push rod, which is provided with, lives
Plug, the upper end of the support tube are provided with through hole, and the upper end of the push rod is stretched into through hole, and the lower end outside of the push rod is arranged with
Spring, the lower end side of the support tube are provided with the steam vent of the space connection in support tube.The device is arranged on bonnet
Downside, the upper end of push rod is towards bonnet, and when automobile is with pedestrian collision, squib igniting produces flame by aerogenesis efficacy-enhancing ingredient
Combustion, the gas generant composition in accordance flame to be formed that burns break up the bottom of separation sleeve, when gas generant composition in accordance is burnt moment produce a large amount of gases, gas pushes away
Piston moves up, and push rod stretches out, so as to which bonnet jack-up be come, when piston rises to the upper end of support tube, and spring quilt
The speed reduction of compression, now piston, prevents piston from sharp impacts occur with support tube upper end, strengthens overall stability and peace
Quan Xing；When pedestrian and bonnet elastic collision, the now gravity of bonnet（Colliding forces comprising human body）With the pressure of spring
Power is more than gas to the active force of piston, and the gas in support tube discharge at steam vent, support bar, bonnet decline, with
Piston is moved down, and then re-compresses gas, and the elastic force of spring and the weight of bonnet are more than when the gas pressure in support tube
During power, piston and spring can be again to the top setting in motions of support tube, by using the multiple compression and resilience of spring, no
When pedestrian head and bonnet can only hit, effect that formation repeatedly buffers, and then effectively absorb pedestrian head
The kinetic energy of shock, the injury caused by pedestrian head is hit are preferably minimized.
Preferably, the upper end of the support tube is provided with closure, the downside center of the closure, which is provided with, stretches into through hole
Interior adapter sleeve, upper end and the adapter sleeve clamping of the push rod.
Preferably, sealing ring is provided between the piston and support tube inwall.Sealing ring plays sealing function.
Preferably, the outer bottom of the separation sleeve is provided with reduction groove.Reduction groove can weaken the intensity of separation sleeve bottom,
Ensure quickly puncture the bottom surface of separation sleeve during gas generant composition in accordance burning, stability is good.
Preferably, described spring is volute spring, coordinate at the minimum diameter of the spring with push rod gap, it is described
At the maximum outside diameter of spring and support tube inwall gap coordinate.Spring plays positioning action to push rod, it is ensured that push rod and support
Cylinder concentricity, prevent push rod stretch out after due to concentricity the problem of and cause push rod to block and can not reply, stability is more preferable.
Therefore, the utility model has the good beneficial effect of simple in construction, response quickly, stability.
Brief description of the drawings
Fig. 1 is a kind of structural representation of the present utility model.
Fig. 2 is Fig. 1 sectional view.
Fig. 3 is close-up schematic view at A in Fig. 2.
In figure：Support tube 1, push rod 2, separation sleeve 3, reduction groove 30, squib 4, combustion chamber 5, gas generant composition in accordance 6, piston 7,
Sealing ring 70, closure 8, adapter sleeve 9, spring 10, steam vent 11.
Embodiment
The utility model is further described with reference to the accompanying drawings and detailed description：
A kind of automatic bounce device of pyrotechnic automobile engine cover as shown in Figure 1, Figure 2 and Figure 3, including support tube 1, be located at
Push rod 2 in support tube, the lower end of support tube are provided with separation sleeve 3, and the outer bottom of separation sleeve is provided with reduction groove 30, separation sleeve
Upper end closed, squib 4 is provided with the lower ending opening of separation sleeve, combustion chamber 5 is formed between squib and separation sleeve bottom,
It is provided with gas generant composition in accordance 6 in combustion chamber, the lower end of push rod is provided with piston 7, and piston and push rod be integral type structure, in piston and support tube
Sealing ring 70 is provided between wall, the upper end of support tube is provided with through hole, and the upper end of push rod 2 is stretched into through hole, and the upper end of support tube is set
There is closure 8, the downside center of closure is provided with the adapter sleeve 9 stretched into through hole, upper end and the adapter sleeve clamping of push rod；
The lower end outside of push rod 2 is arranged with spring 10, and spring is volute spring, at the minimum diameter of spring with push rod gap
Coordinate, at the maximum outside diameter of the spring and inwall gap of support tube coordinates；The lower end side of support tube is provided with the sky in support tube
Between the steam vent 11 that connects.
With reference to accompanying drawing, principle of the present utility model is as follows：The closure of push rod upper end contacts branch with the downside of bonnet
Support；When automobile and pedestrian collision, squib igniting produces flame and gas generant composition in accordance is ignited, and gas generant composition in accordance is burnt the flame to be formed
The bottom of separation sleeve is broken up, a large amount of gases of moment generation, gas push piston move up when gas generant composition in accordance is burnt, and push rod is stretched
Go out, so as to which bonnet jack-up be come, when piston rises to the upper end of support tube, spring is compressed, now the speed drop of piston
It is low, prevent piston from sharp impacts occur with support tube upper end, strengthen overall stability and security；Pedestrian and bonnet elasticity
During collision, the now gravity of bonnet（Colliding forces comprising human body）It is more than effect of the gas to piston with the pressure of spring
Power, the gas in support tube are discharged at steam vent, and support bar, bonnet decline, and as piston moves down, and then press again
Contracting gas, when the gas pressure in support tube be more than spring elastic force and bonnet gravity when, piston and spring can again to
The top setting in motion of support tube, by using the multiple compression and resilience of spring, it can not only make pedestrian head and engine
When lid hits, the effect repeatedly buffered is formed, and then the effective kinetic energy for absorbing pedestrian head and hitting, pedestrian head is hit
Injury caused by hitting is preferably minimized.
Claims (5)
1. a kind of automatic bounce device of pyrotechnic automobile engine cover, it is characterized in that, including support tube, the top that is located in support tube
Bar, the lower end of the support tube are provided with separation sleeve, the upper end closed of the separation sleeve, and electric point is provided with the lower ending opening of separation sleeve
Fire tube, combustion chamber is formed between squib and separation sleeve bottom, be provided with gas generant composition in accordance in described combustion chamber, under the push rod
End is provided with piston, and the upper end of the support tube is provided with through hole, and the upper end of the push rod is stretched into through hole, outside the lower end of the push rod
Side is arranged with spring, and the lower end side of the support tube is provided with the steam vent of the space connection in support tube.
2. a kind of automatic bounce device of pyrotechnic automobile engine cover according to claim 1, it is characterized in that, the support tube
Upper end be provided with closure, the downside center of the closure is provided with the adapter sleeve stretched into through hole, the upper end of the push rod with
Adapter sleeve clamping.
3. a kind of automatic bounce device of pyrotechnic automobile engine cover according to claim 1 or 2, it is characterized in that, the work
Sealing ring is provided between plug and support tube inwall.
4. a kind of automatic bounce device of pyrotechnic automobile engine cover according to claim 1 or 2, the outer bottom of the separation sleeve
Face is provided with reduction groove.
5. a kind of automatic bounce device of pyrotechnic automobile engine cover according to claim 1, it is characterized in that, described spring
For volute spring, coordinate at the minimum diameter of the spring with push rod gap, at the maximum outside diameter of the spring and support tube
Inwall gap coordinates.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720541975.4U CN206826759U (en) | 2017-05-16 | 2017-05-16 | A kind of automatic bounce device of pyrotechnic automobile engine cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720541975.4U CN206826759U (en) | 2017-05-16 | 2017-05-16 | A kind of automatic bounce device of pyrotechnic automobile engine cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206826759U true CN206826759U (en) | 2018-01-02 |
Family
ID=60771676
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720541975.4U Active CN206826759U (en) | 2017-05-16 | 2017-05-16 | A kind of automatic bounce device of pyrotechnic automobile engine cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206826759U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111674352A (en) * | 2020-04-15 | 2020-09-18 | 河北东方久乐瑞丰汽车安全部件有限公司 | Trigger of automatic lifting system of automobile front cover |
| CN112124246A (en) * | 2020-09-27 | 2020-12-25 | 均胜汽车安全系统(湖州)有限公司 | Pyrotechnic automobile engine hood bouncing device |
-
2017
- 2017-05-16 CN CN201720541975.4U patent/CN206826759U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111674352A (en) * | 2020-04-15 | 2020-09-18 | 河北东方久乐瑞丰汽车安全部件有限公司 | Trigger of automatic lifting system of automobile front cover |
| CN112124246A (en) * | 2020-09-27 | 2020-12-25 | 均胜汽车安全系统(湖州)有限公司 | Pyrotechnic automobile engine hood bouncing device |
| CN112124246B (en) * | 2020-09-27 | 2021-12-28 | 均胜汽车安全系统(湖州)有限公司 | Pyrotechnic automobile engine hood bouncing device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 313103 Houshan Natural Village, Heping Town, Changxing County, Huzhou City, Zhejiang Province Patentee after: Junsheng Automobile Safety System (Huzhou) Co., Ltd. Address before: 313103 Houshan Natural Village, Heping Town, Changxing County, Huzhou City, Zhejiang Province Patentee before: Key (Huzhou) Automotive Safety Systems Co., Ltd. |
|
| CP01 | Change in the name or title of a patent holder |