WO2014191295A1 - Unité volant - Google Patents

Unité volant Download PDF

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Publication number
WO2014191295A1
WO2014191295A1 PCT/EP2014/060519 EP2014060519W WO2014191295A1 WO 2014191295 A1 WO2014191295 A1 WO 2014191295A1 EP 2014060519 W EP2014060519 W EP 2014060519W WO 2014191295 A1 WO2014191295 A1 WO 2014191295A1
Authority
WO
WIPO (PCT)
Prior art keywords
steering wheel
housing
wheel body
positioning
holding
Prior art date
Application number
PCT/EP2014/060519
Other languages
German (de)
English (en)
Inventor
Marcus Weber
Raimund Nebel
Roland Peiz
Original Assignee
Autoliv Development Ab
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Autoliv Development Ab filed Critical Autoliv Development Ab
Publication of WO2014191295A1 publication Critical patent/WO2014191295A1/fr

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

Definitions

  • the invention relates to a steering wheel unit according to the preamble of claim 1.
  • Steering wheels with a so-called "floating module” are widely used in motor vehicle technology, in which case the housing of a gas bag module is received in the hub region of a steering wheel body and can be pressed against the force of spring elements against the steering wheel body, thus allowing one or more horn contacts
  • a steering wheel unit should have as many as possible three properties: On the one hand, of course, a high degree of functional reliability has to be ensured that the housing of the gas bag module remains connected to the steering wheel body even when the so-called catch strikes upon expansion of the gas bag the car manufacturers (or their customers) demanded a small and even gap between the roof of the housing and the steering wheel body (in both the axial and radial directions.)
  • the steering wheel unit should be simple and therefore inexpensive to manufacture ar, in particular, the final assembly of the gas bag module in the steering wheel should be as simple as possible, and it is particularly preferred if there is a possibility to assemble the housing only when mounted in the vehicle steering wheel body in the steering wheel body.
  • WO 2009/149776 A1 proposes for this purpose to decouple the positioning (in particular also the Z (axial) positioning) of the housing in the steering wheel body and the retention of the housing in the steering wheel body when unfolding the airbag and to provide separate assemblies for this purpose.
  • a wire hanger is held on the housing bottom by means of the housing bottom connected to holding surfaces and from the steering wheel body or a fixed to the steering wheel body plate connected hooks extend in the direction of the housing bottom.
  • the retaining surfaces (hereinafter: counter-surfaces) of these hooks are not engaged, at rest, with the arranged portions of the wire bracket, but are spaced from these in the axial direction.
  • the hooks (that is, their counter-holding surfaces) then engage with the wire bow when the separately formed axial positioning means fail during expansion of the gas bag.
  • the holding surfaces transmit the force of the catch impact on the wire hanger, which in turn initiates this via the counter-holding surfaces in the hooks, which derive them in the steering wheel body.
  • This concept works very well and has proven itself in practice.
  • the gas bag module is prefabricated such that it consists of a housing and a connected to springs with the housing horn plate.
  • One of the advantages here is that the function of the horn (ie the functioning of the horn contacts) can be tested before final assembly of the gas bag module in the steering wheel body.
  • the present invention has the object to develop a generic steering wheel unit in that an airbag module can be used, which has a housing and a spring connected to the housing horns plate, the horn plate already before final assembly of the airbag module in Steering wheel can be connected to the housing.
  • an airbag module can be used, which has a housing and a spring connected to the housing horns plate, the horn plate already before final assembly of the airbag module in Steering wheel can be connected to the housing.
  • the steering wheel body of the steering wheel unit according to the invention has a foam body and a skeleton (in particular of metal) accommodated in this foam body.
  • the horn plate is held in the foam body, wherein the horn plate is preferably held exclusively by the foam body and locked with the foam body.
  • It is (as in the prior art also) provided at least one counter-surface, which ensures that the airbag module can not be separated from the steering wheel body when unfolding the airbag, and which is otherwise without function.
  • This counter-holding surface - which is usually part of a steering wheel-side hook - is directly connected to the skeleton.
  • This counter-holding surface as is basically known from the prior art, thus has no influence on the positioning of the gas bag module in the steering wheel body.
  • the at least one holding surface connected to the housing is also part of a Z-positioning unit, so that the holding surface has a double function: it serves for Z-positioning of the housing relative to the horn plate when the housing is not pressed down and secondly for holding the housing directly on the skeleton of the steering wheel body during expansion of the airbag.
  • the holding surface For coupling the retaining surface to the horn plate in the resting state and for coupling the retaining surface to the counter-surface connected to the skeleton preferably serves a wire section, which is further preferably part of a wire bracket.
  • three Z positioning units are generally provided, wherein the wire hanger is part of all these Z positioning units.
  • each Z-positioning unit is also assigned a counter-holding surface, so that respective holding and Z-positioning units are formed.
  • Figure 1 is a schematic cross section through an inventive
  • FIG. 2 shows a section along the plane AA in FIG. 1
  • 3 shows the steering wheel body, horn plate and housing shown separately in FIG. 1, in a representation corresponding to FIG. 1, FIG.
  • FIG. 4 shows that shown in FIG. 3, wherein the gas bag module consisting of housing and horn plate is already mounted
  • Figure 5 shows that shown in Figure 2, wherein the wire hanger is in a relaxed disassembly position.
  • FIG. 2 which is a schematic section along the plane AA in FIG. 1, not all elements are shown which can be seen must be: These are the springs and the elements of horn contacts. These elements are not shown in FIG. 2 for the sake of clarity.
  • Figure 1 is a "kinked" sectional view corresponding to the sectional plane BB in Figure 2.
  • non-axial positioning units may be provided, which, however, not shown These non-axial positioning units may act between the housing and the horn plate or between the housing and the steering wheel body.
  • the steering wheel unit consists of a steering wheel body 10 and an airbag module 20, wherein the airbag module 20 in turn has a housing 30 and a horn plate 40.
  • the steering wheel body 10 has a skeleton 14 of a rigid material, in particular of a metal, and a foam body 12, which surrounds the skeleton 14 in sections, on. This is basically known in the prior art and need not be explained further.
  • the skeleton 14 has a receptacle 11 for a steering column, wherein the steering column in the mounted state in the axial direction, namely the Z-direction (see the coordinates of Figure 1), extends.
  • the foam body 12 has in the region of the bottom of the steering wheel body 10 in a circumferential in the X-Y plane receiving groove 13. From a lower portion of the skeleton 14 extend steering wheel body side hooks 16a, 16a ', 16a "and 16b, 16b' and 16b". Each two of these hooks form a group, namely a pair, as can be seen in particular from Figure 2 directly. Preferably, there are three groups of such steering wheel body side hooks, each group having at least one hook, but preferably two such hooks (as shown).
  • the steering wheel body-side hooks may be integrally formed with the rest of the skeleton 14, but need not. However, a firm and lasting connection, which can withstand considerable forces, must be given. In the embodiment of the steering wheel body-side hook, in the embodiment shown in each case between the hooks of a pair, a recess 18 is provided in the embodiment shown.
  • the downwardly facing surfaces of the steering wheel body-side hooks are the counterpart surfaces, wherein in FIG. 3 two counter-holding surfaces can be seen, namely the counter-holding surfaces 17 and 17 '.
  • the counter-holding surfaces here are inclined by the angle ⁇ against the XY plane (see FIG. 4).
  • the steering wheel body-side hooks point outward and the counter-holding surfaces rise inwards. This is to be preferred on account of the wire hanger 50 used here (this will be discussed later), in the case of a differently designed wire hanger, in particular in such a case as described in the generic WO 2009/149776 A1, the reverse would be meaningful: Inwardly pointing hook with outwardly rising counter-holding surfaces.
  • This has a lateral opening for each steering wheel body side hook.
  • a lateral opening is associated with each steering wheel body-side hook of a pair.
  • a pair of side apertures are provided for each pair of steering wheel-side hooks, namely a first 44a, 44a ', 44a "and a second lateral aperture 44b, 44b' and 44b".
  • a central opening 42, 42 ', 42 for a housing-side hook 36, 36', 36"
  • a positioning hook 46a, 46a ', 46a “and 46b, 46b' and 46b” is located in each case between a central opening 42, 42 ', 42 "and a lateral opening. 2), wherein two parts can be seen in the illustration of Figure 3 (reference numerals 47, 47 ') .Two lateral openings, one central opening and two positioning hooks each belong to a holding and Z-positioning unit E, E 'and E ". Instead of providing two lateral openings and a central opening, it is equally possible to provide a common opening and to arrange the positioning hook and dimensioned so that at least partially spans the common aperture.
  • the top of the horn plate 40 carries a two-wire electrical wire with the wires 56a, b of the wire are at least partially not insulated. Furthermore, two pins for springs 58 are arranged on the upper side of the horn plate 40.
  • a wire bracket 50 is held between the positioning surfaces 47, 47 'and the top of the horn plate 40, which in the sectional views of Figures 1, 3 and 4 only in its sectional surfaces, in Figure 2, however, is substantially completely visible. The geometry and other features of this wire bracket 50 will be discussed later. Those portions of the wire bracket 50 which are part of the support and Z positioning units are referred to as wire sections 52, 52 ', 52 ". Finally, the housing 30 will be discussed.
  • housing-side hooks 36, 36 ', 36 " which also face outward, extend from the bottom of the housing 16.
  • the upwardly facing surfaces of the housing-side hooks are the retaining surfaces 37, 37' and 37".
  • the housing-side hooks with their holding surfaces have a double function: they serve on the one hand Z-positioning of the housing relative to the horn plate 40 and continue to serve to hold the housing on expansion of the airbag securely on the skeleton 14 of the steering wheel body 10.
  • the wire hanger 50 will be discussed first: The wire hanger 50 extends from a first end 50a to a second end 50b.
  • the wireframe has a sort of "cloverleaf” shape with outermost regions and concave regions, and the outermost regions include the wire sections 52, 52 'and 52 "respectively forming part of one combined holding and Z-positioning unit E, ⁇ ', E ".
  • the wire sections 52, 52' and 52" can be moved elastically outward with a corresponding force; This happens especially when mounting the steering wheel body unit, as will be seen later.
  • the two adjacent to the two ends 50a, 50b overlap each other and each lie on a holding element serving as a retaining pin 54 and exert on this a force in the direction of F.
  • the wire bracket 50 is thus biased accordingly.
  • the housing 30 is mounted on the horn plate 40.
  • first of all the wire clip 50 is arranged on the horn plate and brought into the state shown in FIG. 2, so that the wire sections 52, 52 'and 52 "are each between the positioning surfaces 47, 47' and the surface of the horn plate 40
  • the housing 30 is then placed on the horn plate 40 from above such that the housing-side hooks 36, 36 'and 36 "extend through the central openings 42, 42' and 42" in the horn plate 40.
  • This assembly step takes place under elastic deformation of the wire bracket 50, including the housing-side hook 36, 36 'and 36 "have corresponding inclined surfaces on the bottom, as is basically known in the art.
  • the springs 58 are held between the bottom of the housing 30 and the horn plate 40. Furthermore, the contactors 55 are positioned over uninsulated portions of the bifilar wire.
  • the fully assembled (ie consisting of housing 30 and horn plate 40) gas bag module 20 is inserted into the hub region of the steering wheel body 10 until the edge of the horn plate 40 is latched in the receiving groove 13 of the foam body 12.
  • an elastic deformation of the wire bracket 50 by the steering wheel body side haws ken which pass through the side openings 44a, 44b, 44a ', 44b', 44a ", 44b" of the horn plate 40.
  • horn plate and airbag housing are pre-assembled and then mounted together in the steering wheel body.
  • this is not mandatory, it would also be possible in principle to first mount the horn plate in the steering wheel body and then mount the airbag housing on the horn plate (by snapping). The ease of mounting remains intact, in particular, since even in this case, a screwless installation is possible.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Air Bags (AREA)

Abstract

L'invention concerne une unité volant pourvue d'un corps (10) et d'un module de coussin de sécurité gonflable. Le module de coussin de sécurité gonflable est constitué d'un logement (30) dans lequel un coussin de sécurité gonflable (32) est plié et lequel porte un gonfleur, et d'une plaque d'avertisseur sonore (40) reliée au corps (10) du volant et à laquelle le logement (30) est relié par l'intermédiaire d'au moins un élément ressort, de telle manière que le logement (30) peut être enfoncé contre le corps (10) du volant sensiblement dans une direction z. Au moins une unité de positionnement z définit la position z du logement (30) par rapport au corps (10) du logement lorsque le logement (30) n'est pas enfoncé. Pour cela, le logement (30) présente au moins une surface de retenue et au moins une surface de retenue complémentaire est présente, la surface de retenue et la surface de retenue complémentaire, lorsque le logement (30) n'est pas exposé à des forces extérieures (30) et n'est pas enfoncé, ne sont pas en liaison fonctionnelle l'une avec l'autre, mais peuvent être amenées à coopérer, par exemple lorsque l'unité de positionnement z ne remplit pas sa tâche lorsque le coussin de sécurité gonflable est en train de s'élargir. Le corps (10) du volant comporte un corps en mousse (12) et un squelette (14) logé dans ce corps en mousse (12). Afin de pouvoir simplifier le montage, la plaque d'avertisseur sonore (40) est retenue dans le corps en mousse (12) et la surface de retenue complémentaire est reliée directement au squelette (14).
PCT/EP2014/060519 2013-05-25 2014-05-22 Unité volant WO2014191295A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102013008819.4 2013-05-25
DE102013008819.4A DE102013008819B4 (de) 2013-05-25 2013-05-25 Lenkradeinheit

Publications (1)

Publication Number Publication Date
WO2014191295A1 true WO2014191295A1 (fr) 2014-12-04

Family

ID=50771293

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2014/060519 WO2014191295A1 (fr) 2013-05-25 2014-05-22 Unité volant

Country Status (2)

Country Link
DE (1) DE102013008819B4 (fr)
WO (1) WO2014191295A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113767032A (zh) * 2019-05-03 2021-12-07 奥托立夫开发公司 车辆发声警示器控制设备

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3178707B1 (fr) * 2015-12-08 2018-07-18 Autoliv Development AB Volant de direction
CN109641563A (zh) * 2016-08-29 2019-04-16 天合汽车安全系统股份有限公司 驾驶员安全气囊安装验证系统
US10150441B2 (en) * 2016-10-21 2018-12-11 Autoliv Asp, Inc. Dampening driver airbag assemblies and related systems and methods
FR3083189B1 (fr) * 2018-06-29 2021-12-10 Autoliv Dev Dispositif de montage amovible d'un module de coussin gonflable
DE102018127636A1 (de) * 2018-11-06 2020-05-07 Trw Automotive Safety Systems Gmbh Lenkungsbaugruppe für eine fahrzeuglenkung
FR3113477B1 (fr) * 2020-08-18 2022-09-16 Autoliv Dev Volant de véhicule comprenant un habillage de volant et un module de sécurité

Citations (2)

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Publication number Priority date Publication date Assignee Title
EP1475270A2 (fr) * 2003-05-07 2004-11-10 TRW Automotive Safety Systems GmbH Ensemble comprenant un volant et un module de coussin gonflable
WO2009149776A1 (fr) * 2008-06-13 2009-12-17 Autoliv Development Ab Unité de volant

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Publication number Priority date Publication date Assignee Title
DE20017527U1 (de) 2000-10-12 2001-02-22 Trw Automotive Safety Sys Gmbh Fahrzeuglenkrad
US6830263B2 (en) 2002-02-08 2004-12-14 Key Safety Systems, Inc. Method for attaching an airbag module
JP4797584B2 (ja) 2005-03-16 2011-10-19 タカタ株式会社 エアバッグ装置付きステアリングホイール
US7823908B2 (en) 2007-10-02 2010-11-02 Autoliv Asp, Inc. Airbag module assembly to control gap adjacent airbag cover
JP5225464B2 (ja) 2008-06-25 2013-07-03 オートリブ ディベロップメント エービー 車両ステアリングホイール
DE102008062421A1 (de) 2008-12-17 2010-07-08 Autoliv Development Ab Lenkradeinheit
WO2011100960A2 (fr) 2010-02-18 2011-08-25 Trw Automotive Safety Systems Gmbh Volant de direction avec module à coussin gonflable de sécurité

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1475270A2 (fr) * 2003-05-07 2004-11-10 TRW Automotive Safety Systems GmbH Ensemble comprenant un volant et un module de coussin gonflable
WO2009149776A1 (fr) * 2008-06-13 2009-12-17 Autoliv Development Ab Unité de volant

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113767032A (zh) * 2019-05-03 2021-12-07 奥托立夫开发公司 车辆发声警示器控制设备
CN113767032B (zh) * 2019-05-03 2023-12-26 奥托立夫开发公司 车辆发声警示器控制设备

Also Published As

Publication number Publication date
DE102013008819B4 (de) 2020-07-23
DE102013008819A1 (de) 2014-11-27

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