WO2013167285A1 - Gassackmodul und verfahren zu seiner herstellung - Google Patents
Gassackmodul und verfahren zu seiner herstellung Download PDFInfo
- Publication number
- WO2013167285A1 WO2013167285A1 PCT/EP2013/001399 EP2013001399W WO2013167285A1 WO 2013167285 A1 WO2013167285 A1 WO 2013167285A1 EP 2013001399 W EP2013001399 W EP 2013001399W WO 2013167285 A1 WO2013167285 A1 WO 2013167285A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- radiation
- gas bag
- receiving
- plastic
- bag module
- 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.)
- Ceased
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
- B60R21/217—Inflation fluid source retainers, e.g. reaction canisters; Connection of bags, covers, diffusers or inflation fluid sources therewith or together
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0866—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/0844—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using X-ray
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0805—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation
- B29C2035/085—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using electromagnetic radiation using gamma-ray
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
- B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
- B29C35/08—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation
- B29C35/0866—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation
- B29C2035/0877—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould by wave energy or particle radiation using particle radiation using electron radiation, e.g. beta-rays
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29K—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES B29B, B29C OR B29D, RELATING TO MOULDING MATERIALS OR TO MATERIALS FOR MOULDS, REINFORCEMENTS, FILLERS OR PREFORMED PARTS, e.g. INSERTS
- B29K2105/00—Condition, form or state of moulded material or of the material to be shaped
- B29K2105/24—Condition, form or state of moulded material or of the material to be shaped crosslinked or vulcanised
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/30—Vehicles, e.g. ships or aircraft, or body parts thereof
- B29L2031/3005—Body finishings
- B29L2031/3038—Air bag covers
-
- 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
- B60R2021/2177—Reaction canisters characterised by material
- B60R2021/2178—Plastic
Definitions
- the invention relates to an airbag module according to the preamble of claims 1 and 7 and a method for its production according to claim 9.
- An airbag module for installation in a motor vehicle in particular a front airbag module, always consists of a gas bag, a receiving and holding element for receiving and for holding the gas bag and an inflator for filling the gas bag.
- an inflator often serves a gas generator, in particular a hot gas generator in which there is a pyrotechnic charge, which generates a large amount of hot gas when ignited, which fills the airbag.
- the housing bottom / the base plate in particular in the region in which the gas generator is held by means of its flange is; an optional retaining ring (retainer ring); an optional diffuser; an optionally existing deflector (flame protection wall).
- DE 103 29 380 A1 describes an injection molding method for producing a cover cap of an airbag module, this method being distinguished by a selective temperature control during injection molding. It is proposed, inter alia, to heat a portion of the plastic material during injection molding by electromagnetic radiation.
- the present invention has the object to provide an airbag module, in which temperature-stressed components can also be made of plastic, when very hot gas generators are used. This object is achieved by an airbag module with the features of claims 1 and 7. A method by which such a gas bag module can be produced is specified in claim 9.
- At least one component made of plastic of the gas bag module is radiation-crosslinked after its shaping instead.
- It can be preferably used materials of polyamide (PA) or polypropylene (PP), which may be reinforced by fibers (eg glass fiber, carbon fiber).
- PA polyamide
- PP polypropylene
- fibers eg glass fiber, carbon fiber
- PA6.6 GF30 or PA6 GF30 can be used.
- the plastic - which is in particular a thermoplastic - have a so-called crosslinking amplifier.
- the crosslinking enhancer 1 3,5-triallyl-1, 3,5-triazine-2,4,6 (1 / - /, 3 / - /, 5 / - /) - trione can be used , whereby for a weight portion between 3% and 6% can be provided.
- the production, in particular the injection molding of this component requires no special process control, in particular previously common tools can be used with previously usual temperature control.
- a cross-linking of the plastic material takes place.
- This crosslinking is also referred to as radiation crosslinking.
- This cross-linking has the consequence, among other things, that the temperature resistance, in particular the short-term temperature resistance, of the plastic compared to its uncrosslinked original state increases significantly. For example, the temperature resistance of PA-6.6 GF30 increases from approx. 250 ° C to approx. 360 ° C, that of PA-6 GF30 from approx. 200 ° C to approx.
- the necessary irradiation is not a very complex process step and can be done in particular by irradiating a large number of components to be irradiated in a large container in which they can be in bulk.
- Such a procedure is known for example from the field of connector production, namely, when plastic encapsulations of connectors are radiation crosslinked to withstand high soldering temperatures can.
- the main application of the invention should be in the range just described, namely with the aim of making components of a receiving and retaining element more temperature-resistant.
- the invention can also find other applications in the field of gas bag modules.
- radiation crosslinking of sections or elements of the airbag is only meaningfully possible if this element or section consists of film, since with a fabric the filaments are too thin for radiation crosslinking.
- the use of at least one radiation-crosslinked reinforcing film in the region of the blow-in mouth can be very useful, since a cost-effective flame retardancy can be provided which can make the use of a silicone coating unnecessary, or in conjunction with a silicone coating to an even higher temperature resistance leads. As a result, the amount of exhaust gas, which is caused by a scorching of the airbag fabric, can be reduced.
- a completely different application may be to selectively radiation crosslinking the rupture lines of the housing cover, since the radiation crosslinking leads not only to an increase in temperature resistance, but also to an increase in brittleness, which can have a favorable effect on the controlled opening behavior of the exit doors.
- Preferred embodiments of the invention will become apparent from the subclaims and from the embodiments now described in more detail with reference to the figures. 1 shows a fully assembled gas bag module in a schematic
- FIG. 2 shows all the components of the gas bag module from FIG. 1, FIG. 3 a block schematic representation of the production steps,
- FIG. 4 An enlarged representation of the production step of the radiation crosslinking from FIG. 3 and FIG. 5 A schematic representation of a selective radiation crosslinking
- the gas bag module may be considered to consist essentially of three functional elements, namely the gas bag 10, the receiving and holding element 20 and the gas generator 40 serving as the inflator.
- Bolts 60 serve to connect these functional elements with nuts 62 or corresponding crimping rings.
- the gas bag 10 consists of a gas bag cushion 11 and two reinforcing layers 14a, 14b, which surround the injection mouth 12 of the airbag cushion 11 and connected to the airbag cushion 11, in particular sewn, glued or welded.
- the airbag cushion 11 consists of a plastic fabric, the reinforcing layers 14a, 14b are made of a plastic film.
- the receiving and holding element 20 has in the illustrated embodiment, three individual elements, namely a usually designated as a container housing 22, a cover usually designated as cover 30 and a holding, diffuser and deflector ement 50.
- the housing has a housing bottom 24 and a side wall 29. On the side wall 29 of the housing (usually by means of latching connections - not shown), the cover 30 is held.
- This cover 30 in turn has two sections, namely a roof 32 and a side wall 38.
- a roof 32 In the roof 32 are arranged in a known manner at least one hinge line 34 and a predetermined breaking line 36, which are each formed as internal grooves.
- the holding, diffuser and Deflektorel- ement 50 is arranged, which has a dome-like diffuser 52, a bottom portion 53 and a deflector 56.
- This holding, diffuser and deflector element 50 has a number of tasks, namely to hold the gas bag 10 on the housing bottom 24 and to protect the gas bag, for which purpose the diffuser 52 and the deflector 56 serve.
- the gas generator 40 has a gas generating portion 42 and a flange 44.
- the gas generating section 42 protrudes through a central opening 26 in the housing bottom 24 into the housing 22, where it is spanned by the diffuser 52.
- housing bottom 24 holding, diffuser and deflector element 50 and flange 44 are bolts 60, which extend through corresponding mounting holes 16, 28, 46 and 54, and on these nuts screwed nut 62.
- the bolts or nuts are part of a composite part.
- the holding diffuser and Deflektorelement 50 in question.
- In such a composite part of the plastic is molded onto at least one corresponding metal part.
- each component may consist of a different plastics, since the components should have different properties.
- the components of the gas bag 10 consist of a plastic fabric and a plastic film.
- the component group K1 contains all the components that are manufactured by injection molding.
- This component group K1 includes in the present embodiment, all components of the receiving and holding element 20.
- the component group K2 contains all components, which consist of plastic fabric or plastic film, here are the airbag cushion 11 and the reinforcing layers 14a, 14b.
- the component group K3 contains all other components, in particular those which are wholly or partly made of metal. These are the gas generator 40, the bolts 60 and the nuts 62.
- the component group K1 would include the above-mentioned composite parts, if composite parts are used.
- the assembly step MS follows immediately after this first production step.
- an intermediate step ZS is provided for some of the components, namely the step of radiation crosslinking or cross-linking (these two terms are used synonymously here).
- this intermediate step relates to the housing 22, the holding, diffuser and deflector element 50 and the reinforcing layers 14a, 14b, ie in each case only a part of the two component groups K1 and K2. This is important here, since not all components of these two component groups are suitable for radiation crosslinking.
- the corresponding elements are made of a plastic which is capable of radiation crosslinking, this can be achieved, for example, that the plastic to be processed before injection molding (in the case of the housing 22 and the holding, diffuser and deflector element 50) or before producing the film (in the case of the reinforcing layers 14a, 14b) a so-called crosslinking amplifier (master batch) is added.
- a plurality of individual elements to be irradiated are collected in a container 74 in the embodiment shown and irradiated therein with X-ray gamma or beta rays.
- a radiation generator 70 which may be, for example, an X-ray or electron tube.
- composite parts made of plastic and metal can also be crosslinked by radiation, since the metal elements do not significantly impede the irradiation.
- the radiation crosslinking can even form a further advantage here: In the manufacture of such composite parts, so-called weld seams can be formed near the metal inserts during injection molding. By a downstream radiation crosslinking, the strength of these weld lines can be increased and thus the integrity of the composite part can be improved.
- the method just described and the use of radiation crosslinking just described is, according to the current state of knowledge, the preferred field of application of the invention, which is based in particular on the fact that the manufacturing overhead is relatively low.
- the radiation crosslinking has the further effect that the radiation-crosslinked plastic compared to the corresponding non-radiation-crosslinked plastic has an increased sprouting, as already mentioned.
- This increase in the sprouting can be used selectively, for example in order to improve the breaking up of the covering element (cover) 30 along its predetermined breaking line 36. Since in this application, however, it is generally undesirable for an entire component, in this case the cover element 30, to exhibit increased sprouting, selective irradiation is necessary here, in the exemplary embodiment specifically shown, namely the area of the predetermined breaking line 36.
- a conveyor 76 conveys the cover elements 30 stepwise (ie discontinuously) to a position in which the region of the respective predetermined breaking line 36 is irradiated.
- a shield 72 is provided in the form of a collimator. Since irradiation of the other regions of the cover elements 30 is not desired and since permanent switching on and off of the radiation generator 70 is generally not possible, a mechanical shutter 78 is preferably provided in the beam path.
Landscapes
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Physics & Mathematics (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electromagnetism (AREA)
- Air Bags (AREA)
Description
Claims
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/399,122 US9238311B2 (en) | 2012-05-10 | 2013-05-10 | Airbag module and method for producing same |
| JP2015510683A JP5923218B2 (ja) | 2012-05-10 | 2013-05-10 | エアバッグモジュールおよびその製造方法 |
| KR1020147033578A KR20150017339A (ko) | 2012-05-10 | 2013-05-10 | 에어백 모듈 및 에어백 모듈의 제조방법 |
| CN201380024278.6A CN104271407B (zh) | 2012-05-10 | 2013-05-10 | 气囊模块及其制造方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201210009401 DE102012009401B4 (de) | 2012-05-10 | 2012-05-10 | Gassackmodul und Verfahren zu seiner Herstellung |
| DE102012009401.9 | 2012-05-10 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013167285A1 true WO2013167285A1 (de) | 2013-11-14 |
Family
ID=48407431
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2013/001399 Ceased WO2013167285A1 (de) | 2012-05-10 | 2013-05-10 | Gassackmodul und verfahren zu seiner herstellung |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US9238311B2 (de) |
| JP (1) | JP5923218B2 (de) |
| KR (1) | KR20150017339A (de) |
| CN (1) | CN104271407B (de) |
| DE (1) | DE102012009401B4 (de) |
| WO (1) | WO2013167285A1 (de) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102012009401B4 (de) | 2012-05-10 | 2014-03-20 | Autoliv Development Ab | Gassackmodul und Verfahren zu seiner Herstellung |
| EP3085584B1 (de) * | 2015-04-20 | 2018-06-06 | Autoliv Development AB | Airbagmodul für eine kraftfahrzeugsicherheitsvorrichtung und zugehöriges verfahren zum verpacken eines airbags |
| US9779800B2 (en) * | 2015-09-16 | 2017-10-03 | Micron Technology, Inc. | Timing control circuit shared by a plurality of banks |
| CN205381231U (zh) * | 2015-12-03 | 2016-07-13 | 奥托立夫开发公司 | 安全气囊壳体以及安全气囊组件 |
| KR20210142139A (ko) | 2019-03-29 | 2021-11-24 | 엠씨피피 이노베이션 고도가이샤 | 전체 tpo 에어백 어셈블리 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996010480A1 (en) * | 1994-09-30 | 1996-04-11 | Highland Industries, Inc. | Anti-ravel air bag fabric reinforcement |
| EP1967422A1 (de) * | 2007-03-08 | 2008-09-10 | Collano Xiro AG | Airbag |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19990067426A (ko) * | 1995-11-09 | 1999-08-16 | 마이클 피. 오루키 | 에어 백 파열 시임 및 그 제조 방법 |
| FR2751980B1 (fr) * | 1996-08-02 | 1999-02-05 | Rhone Poulenc Chimie | Composition silicone pour l'enduction de substrats en matiere textile |
| JP3540118B2 (ja) * | 1997-03-27 | 2004-07-07 | 三菱化学株式会社 | エアバッグ収納用カバー |
| JP3434698B2 (ja) * | 1998-01-21 | 2003-08-11 | 日本プラスト株式会社 | エアバッグ収納用ケース |
| US6770578B2 (en) * | 1999-06-07 | 2004-08-03 | Bradford Industries, Inc. | Laminated textile fabrics for use in air holding vehicle restraint systems |
| DE10329380A1 (de) * | 2003-06-30 | 2005-01-20 | Kunststoff-Technik Scherer & Trier Gmbh & Co Kg | Spritzgießverfahren zur Herstellung eines Gussteils |
| DE102006032253B4 (de) * | 2006-07-12 | 2016-05-19 | Trw Automotive Gmbh | Gassackmodul für ein Fahrzeuginsassen-Rückhaltesystem |
| DE102012009401B4 (de) | 2012-05-10 | 2014-03-20 | Autoliv Development Ab | Gassackmodul und Verfahren zu seiner Herstellung |
-
2012
- 2012-05-10 DE DE201210009401 patent/DE102012009401B4/de not_active Expired - Fee Related
-
2013
- 2013-05-10 CN CN201380024278.6A patent/CN104271407B/zh not_active Expired - Fee Related
- 2013-05-10 WO PCT/EP2013/001399 patent/WO2013167285A1/de not_active Ceased
- 2013-05-10 KR KR1020147033578A patent/KR20150017339A/ko not_active Ceased
- 2013-05-10 JP JP2015510683A patent/JP5923218B2/ja not_active Expired - Fee Related
- 2013-05-10 US US14/399,122 patent/US9238311B2/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1996010480A1 (en) * | 1994-09-30 | 1996-04-11 | Highland Industries, Inc. | Anti-ravel air bag fabric reinforcement |
| EP1967422A1 (de) * | 2007-03-08 | 2008-09-10 | Collano Xiro AG | Airbag |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104271407B (zh) | 2017-02-22 |
| CN104271407A (zh) | 2015-01-07 |
| US9238311B2 (en) | 2016-01-19 |
| JP2015517425A (ja) | 2015-06-22 |
| JP5923218B2 (ja) | 2016-05-24 |
| KR20150017339A (ko) | 2015-02-16 |
| DE102012009401A1 (de) | 2013-11-14 |
| US20150108740A1 (en) | 2015-04-23 |
| DE102012009401B4 (de) | 2014-03-20 |
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