CN104411547B - Air bag module - Google Patents
Air bag module Download PDFInfo
- Publication number
- CN104411547B CN104411547B CN201380036195.9A CN201380036195A CN104411547B CN 104411547 B CN104411547 B CN 104411547B CN 201380036195 A CN201380036195 A CN 201380036195A CN 104411547 B CN104411547 B CN 104411547B
- Authority
- CN
- China
- Prior art keywords
- air bag
- base
- bag module
- screw thread
- contact surface
- 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.)
- Expired - Fee Related
Links
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
- B60R21/203—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns
- B60R21/2035—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns using modules containing inflator, bag and cover attachable to the steering wheel as a complete sub-unit
- B60R21/2037—Arrangements for storing inflatable members in their non-use or deflated condition; Arrangement or mounting of air bag modules or components in steering wheels or steering columns using modules containing inflator, bag and cover attachable to the steering wheel as a complete sub-unit the module or a major component thereof being yieldably mounted, e.g. for actuating the horn switch or for protecting the driver in a non-deployment situation
-
- 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
- B60R21/217—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Air Bags (AREA)
Abstract
The invention discloses a kind of air bag module, in particular disclose the air bag module of a kind of driver side, comprising: housing unit, housing unit includes base, and surrounds accommodation space；Air bag, its folding is placed in accommodation space；Also include that it is fixed on base for the inflator of airbag inflated, and inflator includes mounting flange；The first contact surface for supporting mounting flange it is provided with on base.In order to simplify installation and alleviate weight, base includes the screw thread surrounding the first contact surface, connection member includes the second contact surface and coupling screw thread, and connection member is screwed on the screw thread of base, and such adpting flange is fixed between the first contact surface and the second contact surface in the way of clamp.
Description
Technical field
The present invention relates to air bag module, especially driver side air bag module.
Background technology
The most driver side air bag modules produced at present i.e., are arranged on the Die Lenkradnabeals Pralltopf ausgebildet of motor vehicles
Air bag module current design in region is as follows: include the housing unit being made up of two basic elements of character.Described shell
Body assembly surrounds for placing the receiving space folding air bag.Thus, the bottom of housing unit is typically provided having out
The container of mouth, inflator can extend to accommodate interior volume through this opening, and extend to inside air bag, inflator
Usually gas generator.Cover part is typically made of a plastic, and is connected on container, and described cover part has a top
Portion, this top constitutes the wheel hub of steering wheel.Between air bag and base, and the connection between base and gas generator is led to
Set up and be set to: so-called retainer ring is arranged on inside air bag, and multiple connecting bolts extend through from retainer ring and are arranged on
Corresponding connecting hole on air bag, corresponding on the corresponding connecting hole being positioned on base and the adpting flange of gas generator
Connecting hole.Such as, nut is screwed on these connecting bolts.So, one " sandwich " defines, and the two-layer of outside is solid respectively
Determining ring and nut, the inside clips the adpting flange of air bag, housing base and gas generator.Based on this purpose, base
It is provided with the first contact surface that contact surface is equivalent in the application for supporting the adpting flange of gas generator.Logical
Often, the flange of gas generator is supported on the outside of base, but can also be supported on inside base.Retainer ring, bolt and
Nut is typically made from steel.
The shortcoming of prior art is: on the one hand, manufactures difficulty, as a consequence it is hardly possible to realize automatization；On the other hand, weight
Of a relatively high, this adpting flange coming from steel and retainer ring.
Summary of the invention
Thus, it is an object of the invention to provide a kind of air bag module, its assembling is simple, and opens and alleviate weight
The probability of amount.
This target is to be realized by the air bag module of the present invention.
According to the present invention, base has the screw thread around the first contact surface, and connection member has coupling screw thread and second and connects
Contacting surface, described connection member is screwed on the screw thread of base.The adpting flange of inflator is fixed on two contacts in the way of clamp
Between face.So, retainer ring is replaced by annular attachment member.Inflator (typically gas generator) is installed to housing base
Upper very easy, as described in a particular embodiment, can complete to install in shorter time.Even, this was installed
Each step of journey all may be fully achieved automatization.In addition, annular attachment member can the same with base be made of plastics,
Thus alleviate weight.In order to strengthen thermostability, mould for manufacturing the plastics preferably crosslinking with radiation of connection member and/or base
Material.Further, the adpting flange of the inflator being typically made from steel can be made the least, and this further mitigates weight.
In many embodiments, do not allow and safety according to the connection between inflator and the housing unit base of the present invention
Connection between air bag and housing base occurs simultaneously.According to the present invention, air bag is preferably fixed in the way of clamp
Between sidewall and the base of cover part.
Accompanying drawing explanation
The embodiment being described in detail with reference gives present invention further optimization scheme.Wherein:
Fig. 1 shows all parts of the air bag module of the present invention in a disassembled state；
Fig. 2 shows the enlarged drawing of the base in Fig. 1, gas generator and annular attachment member；
Fig. 3 shows Fig. 2 structural representation after first step installation；
Fig. 4 shows Fig. 3 structural representation after second step installation；
Fig. 5 is shown the gas generator including being maintained on base by connection member and is arranged on by internal snap ring
The sub-component of the air bag on base, and include cover part and the sub-component of the outside snap ring being arranged on outside cover part.
Fig. 6 shows that two sub-components in Fig. 5 complete the structural representation after installing further；And
Fig. 7 shows the structural representation after having assembled of the air bag module in Fig. 6.
Detailed description of the invention
Fig. 1 is illustrated that all parts of air bag module according to a preferred embodiment of the invention.These parts exist
It Fig. 1 is the state decomposed completely.Air bag module includes cover part 10, outside snap ring 30, internal snap ring 24, air bag
20, rigid base 40, the gas generator 50 serving as inflator and annular attachment member 60.
Lid 10 includes top 12 and the sidewall 14 of cincture extended from top 12 to axis direction.So, lid 10 is
Tank shape, it is preferred that lid 10 is made up by the way of injection of plastics.Sidewall 14 forms a ring.In the present embodiment, this ring
Cross section substantially circle.But it is also likely to be other cross sections, especially polygonal cross-section.Lid 10 and base 40 constitute
Housing unit, lid 10 and base 40 form one and accommodate space when confined state, and airbag fold is placed on the inside.
Sidewall 14 has exterior contour 16 and in-profile 18.In-profile 18 constitutes and includes horizontal surface portion 18a and upwards
The groove of extended surface part 18b.Exterior contour include first towards upper part 16a and with first towards upper part 16a
In the wedge shape connected up towards top section 12 side, wedge shape includes towards lower part 16b and second towards upper part
16c." towards upper " and " facing down " refer to that face tilts upward or diagonally downward, therefore the normal in each face has axis and radial part
Point.First is the most opposed with in-profile 18 towards upper part 16a, wherein, and the face that upwardly extends part 18b of in-profile 18
Extend mutually parallel with the first of exterior contour 16 towards upper part 16a.
The bottom margin of sidewall 14 has a tapered segment 14a, and wherein, corresponding circular cone is upwards tapered.In the application
In, " upwards " refers to " towards the direction of top section ".Bottom margin can arrange slit in radial directions, to increase this region
Elasticity.So, tapered segment 14a is divided into multiple sections.
The track of outside snap ring 30 is, the V-type that cross section is substantially formed by inner side lower limb 32 and outer legs 34.External card
The angle of inclination towards inner face 32 of ring 30 and be dimensioned so that it can be with the first of exterior contour 16 towards upper
Face part 16a contact, as seen below.Additionally, the angle of inclination towards 32b above of outside snap ring 30 and size
Be sized so as to so that it can with the contacting towards lower part 16b of exterior contour 16, the most as seen later as.
Design and the size of internal snap ring 24 are arranged such that it can put into inner wheel together with the outward flange of base 40
In wide 18.In order to reach this purpose, internal snap ring 24 has a face 24a faced out.Further, the inner side of internal snap ring 24
On be provided with groove 26.Internal snap ring 24 it is also preferred that the moulding being made of plastics.
Base 40 is preferably made of plastics, and it has upwardly extending outer annular projection 42, in the assembled condition, prominent
Rise in 42 grooves 26 extending to internal snap ring 24, with reference to Fig. 5, as seen later as.
Additionally, base 40 includes central opening 44, gas generator 50 is through opening 44, and the receiving extending housing unit is empty
Between and the inside of air bag 20.Opening 44 is surrounded in the present embodiment by the first contact surface 46, and the first contact surface 46 exists
The inner side of housing unit.First contact surface 46 itself is had screw thread, i.e. female thread 49, inner annular projection 48 surround.?
In the present embodiment, between the first contact surface 46 and female thread 49, there is step.
Gas generator 50 includes the adpting flange 52 circumferentially surrounding its main body, and adpting flange 52 includes extending radially inwardly
Part 52a and divide upwardly extending part 52b in outer end of 52a from radial inward extension, the height of part 52b and base 40
Shoulder height is the most consistent.Optionally, adpting flange 52 can also make tabular.
Annular attachment member 60 has prone second contact surface 62 and the coupling spiral shell matched with the screw thread of base
Stricture of vagina, i.e. external screw thread 64.
Fig. 24 shows the assembling process of the sub-component including components described above: first, by gas generator
50 from being placed above on the base 40 it so that opening 44 is stretched out in the bottom of gas generator 50, and makes adpting flange 52
Radial inward extension divides 52a to be supported on the first contact surface 46.Then, annular attachment member 60 is screwed in the inside of base 40
In the female thread 49 of annular projection, until the second contact surface 62 is supported on the upper end upwardly extending part 52b of adpting flange 52
Face, such adpting flange 52 is fixed on two contact surfaces 46 in the way of clamp, between 62.When adpting flange 52 is tabular
Time, the second contact surface will bear against the upside of adpting flange.Annular attachment member 60 can pass through binding agent, or by chain,
Or other similar modes are fixed in inner annular projection 48.Preferably, annular attachment member 60 at least extends to gas and sends out
The height of the air vent 51 of raw device 50, such annular attachment member 60 is also used as air deflector.
Generally base 40 and annular attachment member 60 is preferably made from plastic.Because, adpting flange 52 and preferably pyrotechnics
The main body of the gas generator of formula directly thermally contacts, and therefore base 40 and annular attachment member 60 may become the hottest, excellent
Choosing has the plastics of high thermostability, obtains corresponding plastic components, Ji Keshi by carrying out crosslinking with radiation after moulding
Existing high thermostability, the method can be understood from the manufacture of the plug of plastics.
In further installation step, air bag 20 is installed on the base 40 it by internal snap ring 24, wherein substitute
One edge of capsule 20, i.e. gas injection port, it is fixed in the way of clamp between internal snap ring 24 and annular projection 42.But, when
After air bag 20 is filled, in the case of there is no the extra measure that air bag is fixed on base 40, this clamping
Mode can not meet fixing requirement.The sub-component of this step assembling is the first sub-component.
Fig. 5 shows that, by two separate sub-components being pre-assembled, the most said before is the first sub-component
With the second sub-component, in the second sub-component, outside snap ring 30 slides on sidewall 14, and wherein, outside snap ring 30 is fixed on outer wheels
The second of wide 16 is towards the position of upper part 16c.In order to make outside snap ring 30 can slide on sidewall 14, the bottom of sidewall 14
And/or outside snap ring 30 must have a certain degree of elasticity, based on this purpose, can be in the bottom edge region of sidewall 14
Radial slit above-mentioned is set.
Fig. 6 shows next installation step.In this step, air bag 20 is folded and is placed into cover part 10 and base
In the receiving space of 40 compositions, inside snap ring 24 is pushed in sidewall 14 simultaneously, until the outward flange of base 40 and internal snap ring
24 stop at in-profile 18 towards outside 24a is mobile.
In the final step of air bag module assembling, outside snap ring 30 is pushed down on (that is, away from top 12) along axis, directly
To the position arrived as shown in Figure 7.The outer legs 34 of outside snap ring 30 can be used for air bag module, together with unshowned axially
The angle spring of work, is fixed in the support member 50 of steering wheel side.
Gas generator puts in inside and the inside of air bag accommodating space.Flow out from the air vent 51 of gas generator,
And the thermal current flowing directly into safe air bag fabric is stoped by annular attachment member, annular attachment member extends in the axial direction
To air vent height, therefore, it can as air deflector.Connection member is likely to the diffusion being configured to cross over gas generator
Device.So, connection member should include two parts, i.e. includes an annular connection being approximately equivalent in preceding embodiment
The annular section of parts, including a dome-shaped part forming diffusion shell.
As can be seen here, the most reasonably air bag module assembling is available.
List of numerals:
10 cover parts
12 tops
14 sidewalls
14a tapered segment
15 projections
16 exterior contours
16a first is towards upper part
16b is towards lower part
16c second is towards upper part
16d exterior channels
17 card recesses
18 in-profiles
18a horizontal surface portion
18b upwardly extends face part
18d internal groove
20 air bags
22 inlets
24 internal snap rings
24a is towards outside
26 grooves
30 outside snap rings
Lower limb inside 32
32a is towards inner face
34 outer legs
40 bases
42 outer annular projections
44 openings
46 first contact surfaces
48 inner annular projections
49 female threads
50 gas generator
51 air vents
52 adpting flanges
52a radially extending portion
52b upwardly extends part
60 annular attachment member
62 second contact surfaces
64 external screw threads
Claims (12)
1. air bag module, including: housing unit, described housing unit includes base (40), and surrounds an accommodation space；
Air bag (20), its folding is placed in described accommodation space；Inflator, for inflating to described air bag (20), institute
State inflator to be fixed on described base (40), and described inflator includes adpting flange (52)；Wherein said base (40)
On be provided with the first contact surface (46) for supporting described adpting flange (52), it is characterised in that: the upper bag of described base (40)
Including the screw thread around the first contact surface (46), connection member (60) includes mating screw thread and the second contact surface (62), described connection
Parts are screwed on the screw thread of described base (40), and the most described adpting flange (52) is fixed on the first contact surface in the way of clamp
Between the second contact surface (46,62).
Air bag module the most according to claim 1, it is characterised in that: described connection member (60) is configured cyclization
Shape.
Air bag module the most according to claim 1 and 2, it is characterised in that: described screw thread is female thread (49), described
Coupling screw thread is external screw thread (64).
4. the air bag module piece described in root claim 1 or 2, it is characterised in that: described base is provided with opening on (40)
(44), described inflator passes described opening (44), so that described opening (44) is by described first contact surface (46) and screw thread
Surround.
Air bag module the most according to claim 1 and 2, it is characterised in that: described base (40) and/or described connection
Parts (60) are made of plastics.
Air bag module the most according to claim 1 and 2, it is characterised in that: described housing unit also includes cover section
Part (10), described cover part (10) includes the sidewall (14) of top (12) and cincture, wherein, described air bag (20) with
The mode of clamp is fixed between described sidewall (14) and described base (40).
Air bag module the most according to claim 1 and 2, it is characterised in that: described connection member (60) can also be made
Air deflector and/or bubbler for inflator.
Air bag module the most according to claim 1 and 2, it is characterised in that: described inflator is gas generator.
Air bag module the most according to claim 1 and 2, it is characterised in that: described screw thread and described coupling screw thread it
Between connect through locking end and/or glue bonding and/or be welded and fixed.
Air bag module the most according to claim 1, it is characterised in that: described air bag module is driver side
Air bag module.
11. air bag modules according to claim 1 and 2, it is characterised in that: described base (40) and/or described company
Relay part (60) is made up of the plastics of crosslinking with radiation.
12. air bag modules according to claim 1 and 2, it is characterised in that: described inflator is that pyrotechnic gas occurs
Device.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102012014089.4A DE102012014089B4 (en) | 2012-07-16 | 2012-07-16 | Airbag module, in particular driver's airbag module |
| DE102012014089.4 | 2012-07-16 | ||
| PCT/EP2013/002093 WO2014012650A1 (en) | 2012-07-16 | 2013-07-15 | Airbag module, particularly driver-side airbag module |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104411547A CN104411547A (en) | 2015-03-11 |
| CN104411547B true CN104411547B (en) | 2016-12-07 |
Family
ID=49029053
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380036195.9A Expired - Fee Related CN104411547B (en) | 2012-07-16 | 2013-07-15 | Air bag module |
Country Status (3)
| Country | Link |
|---|---|
| CN (1) | CN104411547B (en) |
| DE (1) | DE102012014089B4 (en) |
| WO (1) | WO2014012650A1 (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5201542A (en) * | 1991-07-10 | 1993-04-13 | Breed Automotive Corporation | Two piece inflator housing |
| CN1147230A (en) * | 1994-03-03 | 1997-04-09 | 奥托里夫发展有限公司 | Steering wheel with preassembled air-bag anti-impact device |
| DE19614276C1 (en) * | 1996-04-11 | 1997-08-28 | Autoliv Dev | Air bag for vehicle |
| DE10331655A1 (en) * | 2003-07-12 | 2005-02-17 | Autoliv Development Ab | Airbag module for motor vehicles |
| DE10349458A1 (en) * | 2003-10-23 | 2005-06-02 | Autoliv Development Ab | Airbag module for use in road vehicle has gasbag in housing with flange of top-hat-shaped diffuser fastened by screws and diffuser holds gas generator in opening in housing |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08230597A (en) * | 1994-12-26 | 1996-09-10 | Toyoda Gosei Co Ltd | Air bag device |
| US6550804B2 (en) * | 2001-02-23 | 2003-04-22 | Breed Automotive Technology, Inc. | Driver side air bag module with annular air bag |
| DE10331303A1 (en) * | 2003-07-11 | 2004-11-04 | Autoliv Development Ab | An airbag module with a vibration damping holder, a gas generator, a vibration damping holder and a housing protection component useful on all types of vehicles |
| WO2005080145A1 (en) * | 2004-02-21 | 2005-09-01 | Autoliv Development Ab | Airbag module comprising a clipped-in diffuser |
| DE102011108795B4 (en) * | 2011-07-29 | 2016-12-29 | Autoliv Development Ab | Airbag module and method for its assembly |
-
2012
- 2012-07-16 DE DE102012014089.4A patent/DE102012014089B4/en not_active Expired - Fee Related
-
2013
- 2013-07-15 CN CN201380036195.9A patent/CN104411547B/en not_active Expired - Fee Related
- 2013-07-15 WO PCT/EP2013/002093 patent/WO2014012650A1/en active Application Filing
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5201542A (en) * | 1991-07-10 | 1993-04-13 | Breed Automotive Corporation | Two piece inflator housing |
| CN1147230A (en) * | 1994-03-03 | 1997-04-09 | 奥托里夫发展有限公司 | Steering wheel with preassembled air-bag anti-impact device |
| DE19614276C1 (en) * | 1996-04-11 | 1997-08-28 | Autoliv Dev | Air bag for vehicle |
| DE10331655A1 (en) * | 2003-07-12 | 2005-02-17 | Autoliv Development Ab | Airbag module for motor vehicles |
| DE10349458A1 (en) * | 2003-10-23 | 2005-06-02 | Autoliv Development Ab | Airbag module for use in road vehicle has gasbag in housing with flange of top-hat-shaped diffuser fastened by screws and diffuser holds gas generator in opening in housing |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104411547A (en) | 2015-03-11 |
| DE102012014089B4 (en) | 2016-08-11 |
| WO2014012650A1 (en) | 2014-01-23 |
| DE102012014089A1 (en) | 2014-01-16 |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161207 Termination date: 20210715 |
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| CF01 | Termination of patent right due to non-payment of annual fee |