CN111559339A - Air bag and vehicle - Google Patents
Air bag and vehicle Download PDFInfo
- Publication number
- CN111559339A CN111559339A CN201910111171.4A CN201910111171A CN111559339A CN 111559339 A CN111559339 A CN 111559339A CN 201910111171 A CN201910111171 A CN 201910111171A CN 111559339 A CN111559339 A CN 111559339A
- Authority
- CN
- China
- Prior art keywords
- airbag
- gas
- cutter
- cover
- air bag
- 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
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 25
- 239000010959 steel Substances 0.000 claims abstract description 25
- 230000003313 weakening effect Effects 0.000 abstract description 13
- 238000010521 absorption reaction Methods 0.000 abstract description 4
- 238000010276 construction Methods 0.000 description 2
- 230000009172 bursting Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000006467 substitution reaction 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
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/20—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components
- B60R21/215—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components characterised by the covers for the inflatable member
-
- 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
- B60R21/02—Occupant safety arrangements or fittings, e.g. crash pads
- B60R21/16—Inflatable occupant restraints or confinements designed to inflate upon impact or impending impact, e.g. air bags
- B60R21/23—Inflatable members
- B60R21/231—Inflatable members characterised by their shape, construction or spatial configuration
- B60R21/2334—Expansion control features
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
The invention relates to the technical field of vehicle parts, in particular to an air bag and a vehicle. The airbag has a plastic cover with no line of weakness thereon; an air bag; a steel shell; a gas generator for generating gas for the gas pocket; and a cover cutter having a sharp edge portion for cutting the plastic cover. The airbag of the present invention does not have the PQ problem caused by the weakening line and the energy of the inflated airbag is not wasted but is fully used to absorb the kinetic energy of the driver and passenger. In addition, the airbag of the present invention may have various random folding patterns, which may save folding time and improve the energy absorption behavior of the inflated airbag.
Description
Technical Field
The invention relates to the technical field of vehicle parts, in particular to an air bag and a vehicle comprising the air bag.
Background
Generally, an airbag of a vehicle is an important passive safety system device of the vehicle. The importance of the airbag of a vehicle, which protects the driver and the passenger from accidents that occur in normal situations, has become more and more important.
At present, conventional airbags often have a line of weakness or line of weakness area in the plastic cover from which the inflated airbag opens the plastic cover directly under a certain large pressure. Thus, on the one hand, the airbag suffers from PQ problems due to the presence of the line of weakness or line of weakness region (i.e., aesthetic concerns due to the line of weakness or line of weakness region being visible or uneven in height); on the other hand, the airbag inflated at the time of collision cannot be fully used to absorb the kinetic energy of the driver and the passenger.
Disclosure of Invention
Technical problem to be solved
The first object of the present invention is: an airbag is provided to solve the prior art PQ problem caused by the necessity of a weakening line in a plastic cover and the problem of a reduction in kinetic energy of a driver and a passenger, which the airbag can absorb, due to the energy of the airbag being wastefully wasted during a collision.
The second object of the present invention is: a vehicle including an airbag is provided to solve the prior art PQ problem caused by the necessity of a weakening line on a plastic cover and the problem of a reduction in kinetic energy of a driver and a passenger, which an airbag can absorb, due to the energy of the airbag being wastefully wasted in a collision.
(II) technical scheme
In order to solve the above technical problems, in one aspect, the present invention provides an airbag including a plastic cover having no weakening line; an air bag; a steel shell; a gas generator for generating gas for the gas pocket; and a cap cutter having a sharp edge portion for cutting the plastic cap.
Preferably, the airbag further comprises a pin secured to the steel housing for connecting the steel housing and the cover cutter.
According to the above aspect, preferably, after the cap cutter moves upward by a certain distance, the pin prevents the cap cutter from further moving upward.
According to a preferred aspect of the above aspect, the airbag further includes a gas space formed by the cover cutter, the wall of the steel case, and the gas generator together.
According to the above aspect, preferably, when the gas in the gas space reaches a predetermined pressure, the cover cutter is pushed upward so that the sharp edge portion cuts the plastic cover.
Preferably, the lid cutter has an aperture through which gas in the gas space enters the gas pocket.
Another aspect of the invention provides a vehicle comprising an airbag according to any of the above aspects.
(III) advantageous effects
The technical scheme of the invention has the following advantages:
the invention provides an airbag which comprises a plastic cover, wherein the plastic cover is provided with no weakening line; an air bag; a steel shell; a gas generator for generating gas for the gas pocket; and a cap cutter having a sharp edge portion for cutting the plastic cap. Thus, on the one hand, the airbag of the present invention does not have the PQ problem due to the weakening line, as compared to the prior art airbag having a weakening line in the plastic cover; on the other hand, in the airbag of the present invention, the plastic cover is pierced by the sharp edge portion of the cover cutter first, and then the inflated airbag is ejected directly from the plastic cover, as compared with the prior art in which the inflated airbag first directly contacts the plastic cover, then ruptures the plastic cover from the weakening line, and then ejects from the plastic cover, so that in the present invention, the energy of the inflated airbag at the time of collision is completely used to absorb the kinetic energy of the driver and passenger, and is not wasted endlessly for rupturing the plastic cover; on the other hand, in the airbag of the related art, the air bag must first burst through the plastic cover and then pop up, and thus must have a designed folding pattern, compared to the airbag of the present invention, in which the air bag pops up directly from the cut plastic cover, and thus it can have various random folding patterns, so that the folding time can be saved and the energy absorption behavior of the inflated air bag can be improved.
Drawings
The above and other objects, features and other advantages of the present invention will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings, in which:
fig. 1 is a schematic view of the structure of an airbag according to the related art.
Fig. 2 is a schematic view of the construction of an airbag according to the present invention, in which the airbag is in an initial state.
Fig. 3 is a schematic view of the construction of an airbag according to the invention, in which the airbag is in an operative condition.
In the figure: 10: a plastic cover; 20: an air bag; 30: a housing; 40: a pin; 50: a gas generator; 60: air holes; 100: a line of weakness; 120: an air bag; 1: a plastic cover; 2: an air bag; 3: a steel shell; 4: a pin; 5: a gas generator; 6: air holes; 7: a cutter; 8: a sharp edge portion; 9: an aperture; 10: a wall; 11: a gas space; 12: an air bag.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
Fig. 1 is a schematic view of the structure of an airbag according to the related art. As shown in fig. 1, the airbag 120 includes a plastic cover 10, an airbag 20, a case 30, and a gas generator 50. The plastic cover 10 is located on the upper outermost side of the airbag 120 and has a line of weakness 100 thereon. The area enclosed by the line of weakness 100 is the most easily ruptured area of the plastic cover 10, and in a crash, the inflated air bag 20 first ruptures the line of weakness 100 and is ejected from the plastic cover 10. The gas generator 50 has one or more gas holes 60, and the gas generator 50 generates gas in an emergency at the time of a collision, and then the generated gas is introduced into the airbag 20 through the gas holes 60, so that the airbag 20 is inflated to be expanded. The housing 30 is located at a lower portion of the airbag 120 and is fixedly coupled to the airbag 20 by a pin 40.
In the event of a collision, the gas generator 50 generates gas urgently, and then the generated gas enters the airbag 20 through the gas hole 60, so that the airbag 20 is inflated to expand. The inflated air bag 20 first contacts the plastic cover 10 and, as its pressure is further increased, the inflated air bag 20 breaks the weakened line 100, thereby being ejected from the plastic cover 10.
Therefore, as shown in fig. 1, the related art airbag 120 has a weakening line 100 on its plastic cover 10, thereby more easily causing the PQ problem. In addition, since the inflated air bag 20 must break the weakening line 100 before being ejected from the plastic cover 10 during a collision, energy of the air bag 20 is wastefully wasted for breaking the weakening line 100, so that kinetic energy of a driver and a passenger, which the inflated air bag 20 can absorb, is reduced, resulting in a decrease in energy absorption performance of the air bag 20.
In one aspect, the present invention provides an airbag that overcomes the above disadvantages, comprising a plastic cover having no line of weakness thereon; an air bag; a steel shell; a gas generator for generating gas for the gas pocket; and a cap cutter having a sharp edge portion for cutting the plastic cap.
According to an embodiment of the present invention, as shown in fig. 2 and 3, the airbag 12 of the present invention may be installed in a steering wheel pad or an instrument panel of a vehicle. The airbag 12 comprises a plastic cover 1, an airbag 2, a steel housing 3, a gas generator 5 and a cover cutter 7. The plastic cover 1 is located on the upper outermost side of the airbag 12. The plastic cap 1 is unitary and does not have any lines of weakness or line of weakness areas thereon and the plastic cap 1 is secured to the steel housing 3. The air bag 2 is located inside the plastic cover 1 and is inflated by gas from a gas generator 5. In addition, the airbag 2 is made of fabric, and is sealed on the cover cutter 8. The steel housing 3 is located outside the airbag 12 and has a wall 10. The steel housing 3 may hold therein the gas generated by the gas generator 5. The gas generator 5 is for generating gas and is fixed to the steel housing 3. The gas generator 5 further has a gas hole 6, and the gas generator 5 generates gas in an emergency at the time of a collision, and then the generated gas enters the airbag 2 through the gas hole 6 and further through the hole 9, so that the airbag 2 is inflated. The lid cutter 7 is made of steel and further comprises a cutting edge portion 8 at its end. When the collision occurs, the gas generated by the gas generator 5 enters the gas space 11 through the hole 6, and the cover cutter 7 moves upward in the direction F in fig. 3 by the gas pressure, and the cutting edge portion 8 moves upward therewith, thereby cutting the plastic cover 1. As shown in fig. 2, the cutting edge portion 8 contacts the plastic cover 1, but the cutting edge portion 8 in the present invention may not contact the plastic cover 1 and may have a certain distance from the plastic cover 1.
According to an embodiment of the present invention, as shown in fig. 2, the airbag 12 further includes a pin 4 fixed to the steel case 3, the pin 4 connecting the steel case 3 and the cover cutter 7. In the initial state of the airbag 12, the pin 4 functions as a connector.
According to the embodiment of the present invention, as shown in fig. 3, at the time of collision, the gas generated by the gas generator 5 enters the gas space 11 through the hole 6, and the cover cutter 7 moves upward against the resistance of the pin 4 by the gas pressure, so that the sharp edge portion 8 of the cover cutter 7 cuts the plastic cover 1. When the lid cutter 7 moves upward a certain distance and contacts the head of the pin 4, the head of the pin 4 prevents the lid cutter 7 from continuing to move upward, at which point the sharp edge 8 of the lid cutter 7 just cuts through the entire thickness of the plastic lid 1. The pin 4 prevents the cover cutter 7 from being ejected together with the airbag 2. Thus, in the operating state of the airbag 12, the pin 4 functions not only as a connector but also as a stopper.
According to an embodiment of the present invention, as shown in fig. 2 and 3, the airbag 12 further includes a gas space 11. The gas space 11 is jointly formed by the cover cutter 7, the wall 10 of the steel housing 3 and the gas generator 5. When the gas generated by the gas generator 5 enters the gas space 11 through the gas holes 6, the gas space 11 serves to hold the entering gas, and the air pressure in the gas space 11 gradually increases as the entering gas increases.
According to the embodiment of the present invention, as shown in fig. 2 and 3, as the pressure of the gas in the gas space 11 is gradually increased so that the gas space reaches a predetermined pressure, the cover cutter 7 is pushed upward by the gas pressure so that the sharp edge portion 8 of the cover cutter 7 cuts the plastic cover 1.
According to an embodiment of the invention, as shown in fig. 2 and 3, the lid cutter 7 has a hole 9. In the initial state of the airbag 12, the wall 10 of the steel housing 3 blocks the hole 9, so that gas in the gas space 11 cannot enter the airbag 2 through the hole 9; in the operating state of the airbag 12, however, the hole 9 of the cover cutter 7 is exposed without being blocked by the wall 10 of the steel case 3 because the cover cutter 7 moves upward, so that the gas in the gas space 11 can enter the airbag 2 through the hole 9.
The operation of the airbag 12 will be described in detail below.
As shown in fig. 3, in the event of a vehicle collision, the gas generator 5 first generates gas in an emergency, the generated gas enters the gas space 11 through the gas hole 6, and when the gas in the gas space 11 is at a predetermined pressure, the cover cutter 7 is pushed upward by the gas pressure. Whereby the hole 9 of the cover cutter 7 is no longer exposed to the obstruction of the wall 10 of the steel housing 3 and gas in the gas space 11 can enter the airbag 2 through the hole 9 so that the airbag 2 is inflated. At the same time, as the lid cutter 7 continues to move upwardly a distance and contacts the head of the pin 4, the head of the pin 4 prevents the lid cutter 7 from continuing to move upwardly, while the sharp edge 8 of the lid cutter 7 just cuts through the entire thickness of the plastic lid 1. Therefore, the inflated air bag 2 can be easily and smoothly ejected from the cut plastic cover 1, thereby securing safety of the driver and passengers.
In another aspect, the invention also provides a vehicle comprising the airbag of the above aspect.
In summary, the present invention provides an airbag and a vehicle including the airbag. The airbag includes a plastic cover having no line of weakness thereon; an air bag; a steel shell; a gas generator for generating gas for the gas pocket; and a cap cutter having a sharp edge portion for cutting the plastic cap. Thus, on the one hand, the airbag of the present invention does not have the PQ problem due to the weakening line, as compared to the prior art airbag having a weakening line in the plastic cover; on the other hand, in the airbag of the present invention, compared with the prior art, the plastic cover is directly punctured by the sharp edge portion of the cover cutter and then the inflated airbag is ejected from the plastic cover, so that, according to the present invention, the energy of the inflated airbag in a collision is fully used to absorb the kinetic energy of the driver and passengers, and is not wastefully wasted for bursting the plastic cover; on the other hand, in the airbag of the related art, the air bag must first burst through the plastic cover and then pop up, and thus must have a designed folding pattern, compared to the airbag of the present invention, in which the air bag pops up directly from the cut plastic cover, and thus it can have various random folding patterns, so that the folding time can be saved and the energy absorption behavior of the inflated air bag can be improved.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. An air bag, characterized by comprising
A plastic cover having no line of weakness thereon;
the air bag is arranged on the air inlet of the air bag,
a steel shell body,
a gas generator for generating gas for the gas pocket; and
a lid cutter having a sharp edge portion for cutting the plastic lid.
2. The airbag of claim 1 further comprising a pin secured to said steel housing for connecting said steel housing and said cover cutter.
3. The airbag of claim 2 wherein the pin prevents the cap cutter from continuing to move upward after the cap cutter has moved upward a distance.
4. The airbag of claim 1 further comprising an air space formed collectively by the cover cutter, the wall of the steel housing, and the gas generator.
5. The airbag of claim 4, wherein when the gas in the gas space reaches a predetermined pressure, the cover cutter is pushed upward so that the sharp edge portion cuts the plastic cover.
6. The airbag of claim 4 wherein the cover cutter has an aperture through which gas in the gas space enters the airbag.
7. A vehicle comprising an airbag according to any of claims 1-6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910111171.4A CN111559339A (en) | 2019-02-12 | 2019-02-12 | Air bag and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910111171.4A CN111559339A (en) | 2019-02-12 | 2019-02-12 | Air bag and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111559339A true CN111559339A (en) | 2020-08-21 |
Family
ID=72067554
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910111171.4A Pending CN111559339A (en) | 2019-02-12 | 2019-02-12 | Air bag and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111559339A (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5108128A (en) * | 1990-09-04 | 1992-04-28 | Davidson Textron, Inc. | Self-piercing cover assembly for airbag |
| US5292151A (en) * | 1993-02-19 | 1994-03-08 | Davidson Textron Inc. | Self piercing cover assembly for air bag having deformable deflector shield |
| KR19980056820A (en) * | 1996-12-30 | 1998-09-25 | 양재신 | Passenger Air Bag Door Device |
| DE102013012979A1 (en) * | 2013-08-03 | 2014-04-17 | Daimler Ag | Airbag arrangement of airbag system mounted in passenger vehicle, has opening element with saw-tooth structure is provided between section of carrier structure and airbag, for cutting of carrier structure and coating |
-
2019
- 2019-02-12 CN CN201910111171.4A patent/CN111559339A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5108128A (en) * | 1990-09-04 | 1992-04-28 | Davidson Textron, Inc. | Self-piercing cover assembly for airbag |
| US5292151A (en) * | 1993-02-19 | 1994-03-08 | Davidson Textron Inc. | Self piercing cover assembly for air bag having deformable deflector shield |
| KR19980056820A (en) * | 1996-12-30 | 1998-09-25 | 양재신 | Passenger Air Bag Door Device |
| DE102013012979A1 (en) * | 2013-08-03 | 2014-04-17 | Daimler Ag | Airbag arrangement of airbag system mounted in passenger vehicle, has opening element with saw-tooth structure is provided between section of carrier structure and airbag, for cutting of carrier structure and coating |
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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 | ||
| AD01 | Patent right deemed abandoned |
Effective date of abandoning: 20240220 |
|
| AD01 | Patent right deemed abandoned |