EP2187162A2 - Traversée métal - matériau de fixation et utilisation de celle-ci ainsi qu'airbag et tensionneur de ceinture avec initiateur - Google Patents

Traversée métal - matériau de fixation et utilisation de celle-ci ainsi qu'airbag et tensionneur de ceinture avec initiateur Download PDF

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Publication number
EP2187162A2
EP2187162A2 EP10002045A EP10002045A EP2187162A2 EP 2187162 A2 EP2187162 A2 EP 2187162A2 EP 10002045 A EP10002045 A EP 10002045A EP 10002045 A EP10002045 A EP 10002045A EP 2187162 A2 EP2187162 A2 EP 2187162A2
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EP
European Patent Office
Prior art keywords
fixing material
metal
base body
passage opening
passage
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.)
Granted
Application number
EP10002045A
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German (de)
English (en)
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EP2187162B1 (fr
EP2187162A3 (fr
Inventor
Thomas Fink
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Schott AG
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Schott AG
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Publication date
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Application filed by Schott AG filed Critical Schott AG
Publication of EP2187162A2 publication Critical patent/EP2187162A2/fr
Publication of EP2187162A3 publication Critical patent/EP2187162A3/fr
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/195—Manufacture
    • F42B3/198—Manufacture of electric initiator heads e.g., testing, machines
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B3/00—Blasting cartridges, i.e. case and explosive
    • F42B3/10—Initiators therefor
    • F42B3/103—Mounting initiator heads in initiators; Sealing-plugs

Definitions

  • the invention relates to a metal fixing material implementation, in detail with the features of the preamble of claim 1; a use as well as a gas generator, airbag and belt tensioner with an ignition device comprising a metal fixing material passage.
  • Metal fuser feedthroughs are previously known in various designs from the prior art. This refers to vacuum-tight fusions of fixing materials, in particular glasses or plastics in metals. The metals act as electrical conductors. Deputy becomes thereby on US-A-5,345,872 . US-A-3,274,937 directed. Such feedthroughs are widely used in electronics and electrical engineering. The material used for melting, in particular glass serves as an insulator. Typical metal fuser feedthroughs are constructed such that metallic inner conductors are fused into a preformed sintered glass part, wherein the sintered glass part or the glass tube is fused into an outer metal part with the so-called base body. Examples of preferred applications of such metal-fixing material feedthroughs are ignition devices.
  • the metal fixing material passages are part of an ignition device.
  • the entire ignition device comprises, in addition to the metal fixing material implementation, a detonating bridge, the explosive and a metal cover which tightly surrounds the ignition mechanism.
  • a detonating bridge Through the implementation of either one or two or more than two metallic pins can be passed.
  • the housing is grounded, in a preferred two-pole design one of the pins.
  • the ignition device or ignition device described above is used in particular for airbags or for belt tensioners in motor vehicles.
  • Known ignition devices of the aforementioned or similar type are described in US 6,274,252 . US 5,621,183 . DE 29 04 174 A1 .
  • the aforementioned ignition units have two metal pins. But there are also electronic igniters possible, which have only a single pin.
  • the ignition devices shown in the prior art comprise a metal base body, for example a metal sleeve which is designed as a turned part or a base body made of plastic.
  • the metal base body has at least one passage opening through which at least one metal pin is performed.
  • a major problem of this embodiment is that such an embodiment is material and cost-intensive and further by the execution of a rotary member, the execution of the passage opening deviating from a circular cross-section only with additional effort is possible.
  • the rotating parts are characterized by relatively large dimensions, which is reflected in a corresponding required dimensioning of the entire ignition device.
  • Embodiments of ignition units are previously known which comprise a pair of electrodes arranged in an insulating material and a base body in the form of a housing.
  • means are provided on one of the components of the metal fixing material feedthrough which are in operative connection with one another. These are carried out either on the fixing material, the electrode or the base body on the surface formed to the adjacent element.
  • the design on the base body includes at least one step, ie, change in cross section in the passage opening, which causes an increase in surface area at the surface exposed to the pressure during the ignition process.
  • a generic metal Fixiermaterialaus Installation is from the document EP 1 455 160 A1 previously known.
  • the main body is formed by a sheet metal element, wherein in a first embodiment, at least the passage opening by a separation process, in particular punching, is generated.
  • the main body itself is preferably likewise punched out of a solid material, but the final geometry of the basic body is obtained by a forming process, for example deep-drawing.
  • a forming process for example deep-drawing.
  • End geometry means that no forming operations have to be performed on it.
  • Basic geometry means that it does not represent the final geometry in the event of any further changes required, or that changes can still be made to this by further production processes, in particular forming processes, the final geometry being achieved only after these additional processes.
  • the front and back means are provided for preventing relative movement of fixing material in the direction of the rear side relative to the inner circumference of the passage opening, in particular during ignition.
  • the funds are an integral part of the body or form a structural unit with this.
  • the generation of the Basic body by punching offers the advantage of short production times and allows a free design, in particular the passage opening.
  • the production by punching with respect to individual parameters depending on the material limits are set, whose exceeding the production can be uneconomical and also adversely affect the available expressive power.
  • the invention is therefore an object of the invention to provide a metal fixing material implementation of the type mentioned with a body having at least one through hole, which is obtained by punching, and high strength with low material and labor costs and at the same time characterized by great expressive powers. Furthermore, assembly errors that result from the inaccurate assignment of the individual elements should be avoided.
  • the metal fixing material feedthrough comprises at least one metal pin, which is arranged in a passage opening in the base body in a fixing material, wherein the base body has a front and a rear side. Means for avoiding a relative movement of fixing material in the direction of the rear side relative to the inner circumference of the passage opening are provided between the front side and the rear side of the base body.
  • metal-fuser feedthroughs can be characterized by the so-called expressive force and pull-out force.
  • the expressive force is the force that has to be expended to push the fixing material, which is inserted into the through hole of the metal fixing material passage, out of the passage.
  • the level of the expression force can be determined either hydrostatically or mechanically.
  • the surface of the fixing material is subjected to a punch, wherein the surface of the punch, which presses on the fixing material, is less than the surface of the fixing material.
  • the expressive force can be hydrostatically measured.
  • the fixing material is subjected to a hydrostatic pressure, for example a water pressure, and measured at which hydrostatic pressure the fixing material is expelled from the passage opening.
  • the pull-out force results as the force needed to pull the metal pin of the metal fixation feedthrough out of the fixation material.
  • the main body At least its passage opening is produced by punching.
  • the entire base body, d. H. the outer circumference of the main body and the passage opening are produced by punching.
  • the main body is then executed as a stamped part.
  • the base body is designed such that the ratio between the thickness of the base body and the maximum extent of the passage opening perpendicular to the axial direction of the passage opening is in the range between 0.5 and 2.5 inclusive.
  • this ratio is preferably in the range of 0.6 to 2.5.
  • this ratio is preferably in the range 0.5 to 2.
  • the ratio between the thickness D of the main body and the maximum extent of the Through opening perpendicular to the axial direction of the through hole in the area after grinding between 0.8 to 1.6, preferably 0.8 to 1.4, more preferably 0.9 to 1.3, most preferably 1.0 to 1.2 ,
  • Thickness is understood to mean the extent or dimension in the height direction or direction of the extent of the passage opening.
  • the geometric axis of the passage opening is determined depending on the design of this. In a symmetrical design, this corresponds to the symmetry axis, otherwise the theoretical center axis.
  • a circular or oval cross section is selected to achieve a uniform stress distribution in the connection between the fixing material and the passage opening.
  • the diameter of the passage opening is then in the range from 1.4 mm to 4 mm, preferably 1.4 mm to 3.5 mm, particularly preferably 1.6 mm to 3.4 mm.
  • the diameter of the metal pin is for example 0.8 to 1.2 mm.
  • the metal fixing material lead-through comprises a metallic base body through which at least one metal pin is made. If two metal pins are provided in a preferred embodiment, one of the two is at least indirectly, d. H. directly or indirectly via other elements the ground connection to the main body ago. When executed with two metal pins these metal pins are preferably arranged parallel to each other. At least one of the metal pins is arranged in a passage opening in the base body and fixed relative thereto by fixing material, preferably in the form of a glass plug.
  • the means for preventing relative movement of fixing material in the direction of the back against the inner circumference of the through hole are provided. These act as a kind of barbs and lead with relative movement in the direction of the back to a positive connection between Fixiermaterialpfropfen, in particular glass plug and body. These include, for example, at least one local constriction in the passage opening, which can be provided in the entire region of the inner circumference, except at the front of the body.
  • the entire base body may be formed as an integral component, in which the metal pin is fused by means of fixing material, ie, for example, the glass plug.
  • fixing material ie, for example, the glass plug.
  • the ratios mentioned always refer to the largest cross section or the largest dimension of the through hole.
  • the reduction in the dimension of the adjoining area, perpendicular to the axial direction of the through-opening, resulting from the undercut from the axis or the difference between the dimensions of the largest cross-section and the smallest is in the range between 0.05 mm to 1 mm, preferably 0.08 mm to 0.9 mm, preferably between 0.1 mm to 0.3 mm.
  • the largest dimension of a cross-section is characterized by the diameter of the through-hole; in the case of an elliptical shape, the largest dimension is the dimension of the major axis of the ellipse.
  • the second metal pin is grounded or fixed as a ground pin on the back of the body. This eliminates additional measures to put a fixed in the base body with fixing metal pin to ground or to electrically couple with the body. Furthermore, only a pin is to be fixed in a through hole, the possibilities are thus more diverse, completely secure the individual pin in the circumferential direction and the possible connection surface for the ground pin can be increased.
  • the fixing material used is, for example, a glass plug, a ceramic plug, a glass ceramic plug, a plastic, a high-performance polymer or a glass / polymer mixture.
  • the means for preventing a relative movement between the fixing material and the passage opening, in particular the sliding out there are a plurality of possibilities. These are characterized by measures on the base body and / or metal pin. In the simplest case, recourse is taken to measures on the base body, which can be realized with the production, in particular during the punching process.
  • the passage opening between the back and front is characterized by a change in the cross-sectional profile. In the simplest case, at least two regions of different internal dimensions are provided, when designed as a passage opening with a circular cross-section with a different diameter. The change in cross section can be done in stages or continuously. In the latter case, the passage opening between the front and rear side is conical, which narrows towards the rear.
  • the hydrostatic pressure which has to be expended in order to express the glass plug is 1500 bar to 2500 bar.
  • the measures on the main body are usually further characterized by the provision of a plurality of recesses or projections. These form at least one of the rear side, viewed from the inner circumference of the passage opening in the main body between the back and front arranged undercut, the front free of such Undercuts is.
  • this is characterized by three partial areas - a first partial area which extends from the rear side in the direction of the front side, a second adjoining area and a third partial area which extends from the front side to the rear side.
  • the second subarea is characterized by smaller dimensions of the passage opening than the first and third subarea.
  • the first and third subareas are then characterized by identical cross-sectional dimensions.
  • an asymmetrical design of the passage opening is turned off, in these embodiments, with more than two areas, an embodiment of the passage opening is preferably selected which can be used with regard to the installation position. This is, based on a theoretical center axis, which extends perpendicular to the pin axis of the guided in the base body pin and extending in the central region of the body, formed symmetrically. This front and back can also be reversed in terms of their function. The undercuts formed by these counteract possible movements of the Fixiermaterialpfropfens in both directions.
  • Fixiermaterialpfropfen Another way to avoid relative movements between Fixiermaterialpfropfen and through hole is the formation of a positive connection between them.
  • the glass is introduced into the opening together with the metal pin, and the glass and metal ring are heated, so that after cooling, the metal shrinks onto the glass plug.
  • the passage opening after the punching of the passage opening substantially has the final diameter.
  • the punched through hole itself can still be edited, for example, be ground without the end diameter changes significantly.
  • the Through opening may have a circular cross-section. Other possibilities are conceivable, for example an oval cross section.
  • measures are provided on the metal pin for additional avoidance of relative movements under load between metal pin and fixing material. These may each be protrusions or recesses extending over the entire outer circumference of the metal pin, or they may be adjacent to one another in the circumferential direction with any desired or fixed predefined and fixed projections.
  • the pull-out force of the metal pin is in the range of 160 N to 380 N, preferably 300 to 380 N.
  • the method for producing a main body of a metal leadthrough is characterized in that, in order to obtain the basic geometry describing the starting shape of the passage opening for forming the passage opening for at least one metal pin, punching is carried out from a sheet metal part.
  • the outer geometry descriptive end contour can be obtained by a separation process free of exciting machining of a sheet metal part predefined thickness. Both processes can be laid in a cost-saving manner in a tool and a single operation.
  • the undercuts in the through holes are formed by deformation of the through hole, for example embossing.
  • the individual embossing process can be carried out before or after the punching process.
  • embossing and punching are carried out in each case on the same side of the body in order to avoid unnecessary changes in the workpiece position and to allow any of these processes to take place immediately after one another.
  • the embossing operations are carried out on one side or both sides, wherein in the latter case preferably the same embossing parameters are set in order to ensure a symmetrical design of the passage opening.
  • Stainless steel according to DIN EN 10020 is a designation for alloyed or unalloyed steels whose sulfur and phosphorus content (so-called iron companion) does not exceed 0.035%. Frequently, further heat treatments (eg quenching) are provided thereafter.
  • the stainless steels include, for example, high-purity steels in which components such as aluminum and silicon are eliminated from the melt by a special manufacturing process, as well as high-alloyed tool steels, which are intended for a subsequent heat treatment.
  • the advantage of the aforementioned materials, in particular the specified tool steels is that when using these materials, a high corrosion resistance, high mechanical strength and good weldability, especially for designs of the body as a stamped part with executed welding edge is ensured.
  • the inventive metal-fixing material implementation in particular glass-metal feedthrough can be used in ignition devices of any design.
  • this can be provided in an ignition device for a pyrotechnic protection device, in particular an airbag or belt tensioner, which comprises a cap connected to the metal fixing material bushing, in particular the base body, wherein a propellant charge is enclosed between metal fixing material bushing and cap, and wherein the base body has a welding edge, which has a smaller thickness than the inner part or portion, wherein the cap is welded to the welding edge with a circumferential weld.
  • the outer contour of the base body there are no restrictions. Preferably, however, when formed as a stamped part of this executed circular disk-shaped.
  • the arrangement of the passage opening can be coaxial or eccentric to the center axis or in a symmetrical design of the outer contour of the body coaxially or eccentrically to the axis of symmetry.
  • the ignition devices with the inventively designed metal-Fixiermaterial implementation can be used in gas generators, such as hot gas generators, cold gas generators, hybrid generators. Particularly preferred applications are ignition devices for pyrotechnic protection systems, such as airbags and belt tensioners.
  • FIG. 1a illustrates on the basis of an axial section, a first preferably used embodiment of an inventively designed metal fixing material implementation 1, preferably for use as an igniter or ignition device of an airbag.
  • This comprises a basic body 3 forming a metal collar 2, with which two mutually parallel metal pins 4 and 5 are electrically coupled.
  • the two metal pins 4 and 5 are arranged parallel to each other. One acts as a conductor, while the second is grounded.
  • the first metal pin 4 acts as a conductor and the metal pin 5 as a ground pin. At least one of the metal pins, in particular acting as a conductor metal pin 4 is guided by the base body 3.
  • the metal pin 4 is for this purpose on a part I 1 of its length I in fixing material 34, in particular a glass plug cooled from a molten glass 6 melted down.
  • the metal pin 4 projects beyond the end face 7 of the glass plug 6 at least on one side and, in the illustrated embodiment, terminates flush with the second end face 8 of the glass plug 6 after completion of the production.
  • the metal pin 4 during the melting to avoid dents during cooling of the fixing material, which lie in the region of the through hole 11 and lead to an undesirable weakening of the connection between the fixing material and the base body 3 in the region of the front side 13, arranged in the through hole 11 in that it projects beyond the main body 3 and thus the front side 13.
  • the ground pin 5 is fixed in the illustrated case directly to the back 12 of the base body 3 at this.
  • the main body 3 is executed in the context of this application as a stamped part.
  • a stamped part according to the present application is present if at least the passage opening 11, preferably also the end geometry of the main body 3 is produced by punching.
  • punching by the outer contour descriptive geometry, in particular the outer circumference 10 by cutting, preferably punching can be generated.
  • the stamped part can either continue to be used in the geometry as it is after the punching process or, in a further working step, which preferably directly adjoins, be reshaped, for example, embossed or deep-drawn.
  • the provided for receiving and fixing the metal pin 4 by means of the glass plug 6 through opening 11 is generated by a punching process in the form of a hole. Subsequently, the metal pin 4 is inserted at the back 12 of the metal-Fixiermaterial-implementation 1 together with the glass plug in the through hole 11 and the metal body containing the glass plug 6 and the metal pin heated, so that after a Cooling process shrinks the metal and so a non-positive connection between the glass plug 6 with metal pin 4 and body 3 is formed.
  • the base body 3 is designed such that the ratio between the thickness D of the base body 3 and the maximum extent the passage opening 11 is perpendicular to the axial direction of the passage opening 11 in the range between 0.5 and 2.5 inclusive.
  • the maximum extent is determined by the diameter d or the length of the oval.
  • the axial direction corresponds to the geometric axis, in particular the axis of symmetry of the passage opening 11 and extends through the base body 3.
  • the ratio between the thickness D of the base body 3 and the maximum extent of the through hole 11 perpendicular to the axial direction of the through hole 11 in the range between 0.8 and 1.6 inclusive, preferably 0.8 to 1.4 , more preferably 0.9 to 1.3, most preferably selected from 1.0 to 1.2.
  • the thicknesses of the main body after grinding are from 2.0 mm to 3.0 mm. Further indicated are the resulting ratios of thickness to hole diameter.
  • the bordered area 1000 indicates the preferred range of diameters and ratios of thickness to hole diameter and area 1100 the most preferred range.
  • Table 2 shows the thickness of the basic body after punching but before the grinding step in mm and the hole diameter in mm. Further specified is the ratio of thickness to hole diameter. Again, the preferred ranges are labeled 1000 and the most preferred ranges are 1100.
  • the passage opening 11 which is preferably formed in the illustrated case with a circular cross-section, is characterized by this projection 37 by two different diameters d 1 and d 2 .
  • the diameter d 1 is greater than the diameter d 2 .
  • the diameter d 2 is the diameter of the passage opening 11 on the rear side 12.
  • the diameter d 1 is the diameter of the passage opening 11 on the front side 13.
  • the passage opening 11 is designed to have the same diameter d 1 over a substantial part of its extension I d1 , 1 d2 stands for the formation of the passage opening 11 with the diameter d 2 .
  • the passage opening has two partial areas, a first partial area 16 and a second partial area 17, wherein the first partial area 16 is characterized by the diameter d 1 and the second partial area 17 is characterized by the diameter d 2 .
  • These diameters are generated by a one-sided punching process in the form of punching from the side of the front side 13 or back 12 with subsequent forming process under pressure, in particular embossing.
  • stamping and forming process each take place from the same side, in the illustrated case, for example, from the front side 13.
  • the cutting out of the base body 3 in a particularly preferred embodiment also takes place within the scope of the punching process of the passage opening 11, ie in the same operation.
  • the tool for this is designed such that the entire base body 3 with a through hole 11 in a single step from a sheet of certain sheet thickness b, which corresponds to a thickness D of the base body 3, is punched out.
  • the above ratios between the thickness D of the base body 3 and the dimension of the through hole 11 are met. In this case, alone by providing an undercut 36, the tightening force can be almost doubled.
  • the difference .DELTA.d d 1 -d 2 in the diameter, which leads to the undercut 36 and the projection 37, is sufficient to compensate for the shortened compared to a design as a rotating part construction and thus shortened length of the through hole 11 in the form of a stamped part, wherein the expressive force is still increased.
  • Stainless steel according to DIN EN 10020 is a designation for alloyed or unalloyed steels whose sulfur and phosphorus content (so-called iron companion) does not exceed 0.035%. Frequently, further heat treatments (eg quenching) are provided thereafter.
  • the stainless steels include, for example, high-purity steels in which components such as aluminum and silicon are eliminated from the melt by a special manufacturing process, as well as high-alloyed tool steels, which are intended for a subsequent heat treatment.
  • Usable are, for example: X12CrMoS17, XSCrNi1810, XCrNiS189, X2CrNi1911, X12CrNi177, X5CrNiMo17-12-2, X6CrNiMoTi17-12-2, X6CrNiTi1810 and X15CrNiSi25-20, X10CrNi1808, X2CrNiMo17-12-2, X6CrNiMoTi17-12-2.
  • the advantage of the aforementioned materials, in particular the specified tool steels is that when using these materials a high Corrosion resistance, high mechanical strength and good weldability is ensured.
  • the through hole 11 has a circular cross-section.
  • other shapes are also conceivable, in which case an undercut is formed by changing the internal dimensions of the opening.
  • the illustrated geometries are idealized. In practice, surface areas that are not completely perpendicular to one another will generally arise. It is crucial that a basic contour of the passage opening is created, which on the one hand the inclusion of a fused metal pin and further preventing the withdrawal of the entirety of metal pin and fixing, in particular Glaspfropfen is fair, ie also the undercut forming surface areas and the adjacent surface areas can in be arranged at an angle to each other.
  • FIG. 2 discloses an embodiment in which only a part of the passage opening 11 is conical.
  • the through-opening 11 of the metal-Fixiermaterial-implementation 1, in particular in the main body 3 is also divided into two sections, a first portion 16 and a second portion 17.
  • the second portion 17 st st by a constant diameter d 2 over its length I d2 characterized.
  • the second partial region extends from the rear side 12 in the direction of the front side 13.
  • the first partial region 16 is characterized by a continuous reduction in the cross-section of the through-opening 11. The reduction takes place from a diameter d 1 to a diameter d 2 .
  • the smaller diameter on the backs 12 according to the embodiments of FIGS. 1a and 2 offer the advantage of a larger connection surface 18 for the metal pin 5, in particular the ground pin.
  • the undercut 36 results due to the change in diameter from the second to the first portion 16 viewed.
  • the asymmetrical geometry of the through hole 11 from the front side 13 to the rear side 12 seen the advantage of preventing slipping or pulling out of the glass plug 6 on the back 12 and in the direction of this. Furthermore, during installation due to the asymmetrical geometry, an easier orientation for the installation position of the individual elements, in particular of the metal pins 4 and 5, can be given. Due to the undercut, a detachment of the assembly of metal pin 4 and glass plug 6 is avoided from the body during ignition.
  • the additional material on the back side 12 offers the advantage of a larger connection surface for the metal pin 4.5 to be grounded. Furthermore, this increases the strength of the glass seal of the metal pin when pressure is applied to the front.
  • FIG. 3 illustrates a further embodiment of a metal-Fixiermaterial-implementation 1.
  • the through-hole 11 is subdivided into three subregions 20, 21 and 22, wherein the respective first and third sub-region 20 and 22 preferably characterized by the same diameter d 20 and d 22 is.
  • the second portion 21 is characterized by a smaller diameter d 21 than the diameter d 20 and d 22 and thus forms a projection 23.
  • This forms the arranged between the front and rear undercut 36 to prevent the relative movement of the glass plug 6 in the direction of the back 12 opposite The inner periphery 15 of the passage opening 11.
  • each directed to the front 13 and back 12 surfaces 24 and 25 thereby form the abutment surfaces for the glass plug 6 in the axial direction.
  • This embodiment is characterized by a fixation of the glass plug 6 in both directions, so that this configuration of the base body is particularly suitable for being able to be installed and positioned as desired, in particular as regards the connection of the metal pins 4.
  • the embodiment causes an increase in the expression force to move the glass plug 6 with shearing of parts of these under pressure loading in motion.
  • the production of the main body 3 according to FIG. 3 is done by punching the base body 3 with a through hole 11 with a constant diameter.
  • the projection is achieved by embossing on both sides with a predefined embossing depth and a stamping tool with a larger diameter than the diameter of the through opening 11 present after punching. Due to the increase in the surface tension of the material at the base body 3 under the influence of the embossing tool when the yield point is exceeded, the material flows, which then forms the projection 23. It is irrelevant whether the embossing process takes place first from the front or back of the body. However, if symmetrical design is required, the embossing forces and embossing depth should be the same on both sides.
  • FIGS. 1a to 3 Measures on the base body 3, in particular the passage openings 11 for preventing a relative movement of the glass plug 6 with respect to this, so show the FIGS. 4 and 5 exemplary measures on the metal pin 4, which serve to prevent the escape of the metal pin 4 from the glass plug 6 during the test and also during the ignition process.
  • the strength of the metal pin in the glass plug is characterized by the pull-out force. This measure can be used alone or in combination with other means 35.
  • the pin 4 has in the coupling region with the base body 3 at least one projection, this is designated 31 and extends in the circumferential direction about the outer periphery 32 of the pin 4.
  • a projection 31 which extends around the entire outer periphery 32 of the metal pin 4. This can be caused by compression or crushing of the Metal pin 4 are formed.
  • Another possibility, not shown here, involves the arrangement of several mutually adjacent in the circumferential direction, preferably with the same distance adjacent to each other arranged projections on the metal pin 4 in the region of the coupling in the base body 3.
  • the feature of the projections on the metal pin 4 contributes significantly to improve the strength of Connection at. This feature prevents the removal of the metal pin 4 during a corresponding test in which normally the metal pin fails to pull and remove the glass plug. This applies analogously to the embodiment according to FIG.
  • the metal pin 4 in the contact region with the molten glass has a plurality of projections arranged over the axial extent of the passage opening, which are connected in series.
  • a corrugation 33 is used. With this, the same effect can be achieved as in FIG. 4 described. The rest of the structure corresponds to that in the FIG. 4 Therefore, the same reference numerals are used for the same elements.
  • FIGS. 4 and 5 also described with the in the FIG. 2 shown measure on the main body, in particular the passage openings combined.
  • FIG. 6 Illustrated by way of example in a greatly simplified representation of an axial section through an ignition device 38 with a metal-Fixiermaterial-implementation 1, as shown in the Fig. 1 to 4 described.
  • the ignition device 38 is produced by using such a bushing by connecting a cap 39 to the base body 3, including a propellant charge 40, wherein the connection here takes place, for example, with a circumferential laser weld 41 at the welding edge.
  • a hermetically sealed housing 42 for the propellant charge is produced.
  • a bridge 42 which is connected to the metal pin 4 of the current feedthrough and the cap 39, or the main body 3, before or during connection of the metal fixing material bushing 1 and cap 39 becomes.
  • the ignition bridge 42 may be designed as a glow wire, which is fastened to the base body 3 in each case by means of a spot weld.
  • a spark ignition used, which surrounds the ignition bridge 42.
  • Fig. 7 shows a section of a cross section through a further embodiment with application of a metal Fixiermaterial take accessory invention 1 in an igniter 38.
  • the welding edge of the base body 3 does not extend in the axial direction, as in the Fig. 6 shown example, but in the radial direction of the body 3 and runs in the circumferential direction to this.
  • the welding edge forms a stop when placing the cap 39, so that it is very easy to position exactly.
  • the welding edge of the can be obtained in an advantageous manner by deep drawing or extrusion of a preferably stamped body 3.
  • FIG Invention in principle also applicable to more than 2 metal pins and so-called mono-pins.
  • Mono pins are ignition units that include only a single metal pin carried by a pin carrier.
  • the pin carrier itself includes, for example, a metal ring which forms the ground connection.
  • the pin carrier 26 comprises a metal pin 4 which is embedded in an insulated filling 6, which is preferably made of glass.
  • the pin carrier 26 comprises a base body 3, which receives the metal pin 4 and a sleeve 27 with an inner wall surface 28.
  • the end of the fused portion of the metal pin 4 is electrically conductively connected by means of a bridge 29 with the base body 3.
  • the passage opening 11 is introduced into the base body 3 by a punching step. In a preferred Embodiment, together with the passage opening 11 of the base body 3 are punched out as described above.
  • the base body 3 together with the sleeve 27 forms a one-piece component.
  • the production of a one-piece component can, for example, be done by punching out a stamped part in a method step and the sleeve is obtained by deep drawing.
  • the dimensioning of the size of the passage opening and the thickness of the base body is as described above.
  • the inner wall surface 28 of the sleeve 27 and the free end of the metal pin 4 are coated.
  • a coating material for example, gold is used.
  • the coating is applied by electrolytic means. The coating serves to keep the electrical resistance at the transition point 30 between a plug 31 which is inserted into the sleeve and that of the inner side 28 of the sleeve 27 low.
  • FIG. 9 shows in a sectional view a gas generator 45 of a pyrotechnic protection device with an ignition device 38, which in Fig. 9 not shown cut open.
  • the gas generator 45 can be used in particular for a steering wheel airbag and is to be installed in the baffle of the steering wheel.
  • the ignition device 38 is inserted in a central cavity 46 of the gas generator 45.
  • the ignition device 38 has, for example, a flange 47 for mounting at the outlet of the central cavity 46.
  • the central cavity 46 communicates with channels 48 with an annular fuel tank 49 which contains the fuel, which is present, for example, as a compressed tablet of sodium azide, potassium nitrate and sand. This is ignited when ignited by the explosively escaping from the ignition device 38 gas and in turn releases propellant gases which flow through the channels 50 to the outside and inflate an example attached to the mounting rim 51 airbag.
  • the individual measures to prevent withdrawal of the metal pin 4 from the base body under load, which were provided in the individual figures on the base body 3 and to avoid pulling out the metal pin from the fixing material on the metal pin, can also be used together in combination.
  • the execution is not subject to any restrictions.
  • the aim is embodiments that ensure high strength of the overall connection between the metal pin 4 and the base body 3 and thus the metal fixing material bushing 1.
  • the passage openings can be formed with different cross-sectional shapes. Preferably, however, circular cross sections are selected.
  • the formation of the undercuts is an integral part of the body.
  • the thickness of the stamped part must be to the hole diameter in order to form a metal-fixing material passage as a stamped part, in particular the passage opening by punching.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Air Bags (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Insertion Pins And Rivets (AREA)
  • Emergency Lowering Means (AREA)
  • Automotive Seat Belt Assembly (AREA)
  • Feeding, Discharge, Calcimining, Fusing, And Gas-Generation Devices (AREA)
  • Joining Of Glass To Other Materials (AREA)
  • Gasket Seals (AREA)
  • Lighters Containing Fuel (AREA)
EP20100002045 2006-01-27 2006-10-17 Traversée métal - matériau de fixation et utilisation de celle-ci ainsi qu'airbag et tensionneur de ceinture avec initiateur Active EP2187162B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006004036A DE102006004036A1 (de) 2006-01-27 2006-01-27 Metall-Fixiermaterial-Durchführung und Verwendung einer derartigen Durchführung sowie Airbag und Gurtspanner mit einer Zündeinrichtung
EP06021694A EP1813906B1 (fr) 2006-01-27 2006-10-17 Traversée métal - matériau de fixation et utilisation de celle-ci ainsi qu'airbag et tensionneur de ceinture avec initiateur

Related Parent Applications (2)

Application Number Title Priority Date Filing Date
EP06021694.2 Division 2006-10-17
EP06021694A Division EP1813906B1 (fr) 2006-01-27 2006-10-17 Traversée métal - matériau de fixation et utilisation de celle-ci ainsi qu'airbag et tensionneur de ceinture avec initiateur

Publications (3)

Publication Number Publication Date
EP2187162A2 true EP2187162A2 (fr) 2010-05-19
EP2187162A3 EP2187162A3 (fr) 2010-09-08
EP2187162B1 EP2187162B1 (fr) 2015-04-29

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Family Applications (4)

Application Number Title Priority Date Filing Date
EP20100002045 Active EP2187162B1 (fr) 2006-01-27 2006-10-17 Traversée métal - matériau de fixation et utilisation de celle-ci ainsi qu'airbag et tensionneur de ceinture avec initiateur
EP06021694A Active EP1813906B1 (fr) 2006-01-27 2006-10-17 Traversée métal - matériau de fixation et utilisation de celle-ci ainsi qu'airbag et tensionneur de ceinture avec initiateur
EP16178996.1A Active EP3104114B1 (fr) 2006-01-27 2006-10-17 Réalisation de matériau de fixation en métal et procédé de fabrication d'un corps de base d'une réalisation de matériau de fixation en metal
EP10009062.0A Active EP2270417B1 (fr) 2006-01-27 2006-10-17 Traversée métal - matériau de fixation et utilisation de celle-ci ainsi qu'airbag et tensionneur de ceinture avec initiateur

Family Applications After (3)

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EP06021694A Active EP1813906B1 (fr) 2006-01-27 2006-10-17 Traversée métal - matériau de fixation et utilisation de celle-ci ainsi qu'airbag et tensionneur de ceinture avec initiateur
EP16178996.1A Active EP3104114B1 (fr) 2006-01-27 2006-10-17 Réalisation de matériau de fixation en métal et procédé de fabrication d'un corps de base d'une réalisation de matériau de fixation en metal
EP10009062.0A Active EP2270417B1 (fr) 2006-01-27 2006-10-17 Traversée métal - matériau de fixation et utilisation de celle-ci ainsi qu'airbag et tensionneur de ceinture avec initiateur

Country Status (9)

Country Link
US (1) US8127681B2 (fr)
EP (4) EP2187162B1 (fr)
JP (1) JP4521000B2 (fr)
AT (1) ATE506593T1 (fr)
DE (2) DE102006004036A1 (fr)
ES (1) ES2617504T3 (fr)
HU (1) HUE032923T2 (fr)
MX (1) MXPA06013611A (fr)
PL (1) PL2270417T3 (fr)

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US8127681B2 (en) 2006-01-27 2012-03-06 Schott Ag Metal-sealing material-feedthrough and utilization of the metal-sealing material feedthrough with an airbag, a belt tensioning device, and an ignition device
US8733250B2 (en) 2006-01-27 2014-05-27 Schott Ag Metal-sealing material-feedthrough and utilization of the metal-sealing material feedthrough with an airbag, a belt tensioning device, and an ignition device
US9423218B2 (en) 2010-09-17 2016-08-23 Schott Ag Method for producing a ring-shaped or plate-like element
EP2431703A3 (fr) * 2010-09-17 2017-03-08 Schott Ag Elément annulaire ou en forme de plaque et son procédé de fabrication
US10684102B2 (en) 2010-09-17 2020-06-16 Schott Ag Method for producing a ring-shaped or plate-like element

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DE102009008673B3 (de) * 2009-02-12 2010-08-19 Schott Ag Gestanztes Durchführungselement mit eingelötetem Kontaktstift
DE202010018430U1 (de) 2010-09-17 2016-07-21 Schott Ag Ring- oder plattenförmiges Element
JP5889330B2 (ja) * 2010-12-21 2016-03-22 ビエロマティーク ロイツェ ゲゼルシャフト ミット ベシュレンクテルハフツング ウント カンパニー コマンディートゲゼルシャフトｂｉｅｌｏｍａｔｉｋ Ｌｅｕｚｅ ＧｍｂＨ＋ Ｃｏ． ＫＧ 回転式フィードスルー
AT513505B1 (de) * 2012-10-25 2014-05-15 Electrovac Hacht & Huber Gmbh Verfahren zur Herstellung eines Anzündersockels für pyrotechnische Systeme und Anzündersockel für pyrotechnische Systeme
AT513921B1 (de) * 2013-01-23 2015-05-15 Electrovac Hacht & Huber Gmbh Zündersockel
AT515349B1 (de) * 2014-01-30 2015-11-15 Electrovac Hacht & Huber Gmbh Verfahren zur Herstellung eines Anzündersockels
DE102017124292A1 (de) 2017-10-18 2019-04-18 Trw Airbag Systems Gmbh Anzünder für einen gasgenerator und verfahren zur herstellung eines anzünders
DE102018105445A1 (de) * 2018-03-09 2019-09-12 Benteler Steel/Tube Gmbh Gehäuse eines Gasgeneratormoduls für ein Airbagsystem eines Kraftfahrzeuges
DE102018005733B4 (de) * 2018-07-20 2021-01-14 Schott Ag Glas-Metall-Durchführung
DE102018218001B4 (de) 2018-10-22 2021-09-30 Schott Ag Verfahren zur Herstellung eines Anschlussstiftes für Durchführungen, sowie Anschlussstift
DE102019208035B4 (de) * 2019-06-03 2021-10-14 Schott Ag Glas-Metall-Durchführung mit einer Hülse
HUE073120T2 (hu) * 2019-12-19 2025-12-28 Schott Ag Fém - rögzítõanyag - átvezetés, eljárás elõállítására és alkalmazása
DE102020107224A1 (de) * 2020-03-17 2021-09-23 Schott Ag Elektrische Einrichtung
EP3904822A1 (fr) 2020-04-28 2021-11-03 Schott AG Système d'allumage de dispositifs de protection des personnes et son procédé de fabrication
KR20230002547A (ko) 2020-04-28 2023-01-05 쇼오트 아게 승객 보호 장치를 위한 점화기 및 그 제조 방법
DE202020102354U1 (de) 2020-04-28 2021-07-29 Schott Ag Anzünder von Personenschutzeinrichtungen
EP4102518A1 (fr) * 2021-06-08 2022-12-14 Schott Ag Traversée électrique
CN115458973A (zh) 2021-06-08 2022-12-09 肖特股份有限公司 电馈通件
USD1009943S1 (en) * 2022-03-22 2024-01-02 Schott Ag Air bag detonator
US12162425B1 (en) * 2023-12-15 2024-12-10 Autoliv Asp, Inc. Initiator for a gas generator of a vehicle safety device
US12330582B1 (en) 2023-12-15 2025-06-17 Autoliv Asp, Inc. Initiator for a gas generator of a vehicle safety device

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DE102006004036A1 (de) 2006-01-27 2007-08-09 Schott Ag Metall-Fixiermaterial-Durchführung und Verwendung einer derartigen Durchführung sowie Airbag und Gurtspanner mit einer Zündeinrichtung
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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8127681B2 (en) 2006-01-27 2012-03-06 Schott Ag Metal-sealing material-feedthrough and utilization of the metal-sealing material feedthrough with an airbag, a belt tensioning device, and an ignition device
US8733250B2 (en) 2006-01-27 2014-05-27 Schott Ag Metal-sealing material-feedthrough and utilization of the metal-sealing material feedthrough with an airbag, a belt tensioning device, and an ignition device
US9423218B2 (en) 2010-09-17 2016-08-23 Schott Ag Method for producing a ring-shaped or plate-like element
EP2431703A3 (fr) * 2010-09-17 2017-03-08 Schott Ag Elément annulaire ou en forme de plaque et son procédé de fabrication
US9651345B2 (en) 2010-09-17 2017-05-16 Schott Ag Method for producing a ring-shaped or plate-like element
EP3537093A1 (fr) * 2010-09-17 2019-09-11 Schott AG Élément annulaire ou en forme de plaque et procédé de fabrication
US10684102B2 (en) 2010-09-17 2020-06-16 Schott Ag Method for producing a ring-shaped or plate-like element

Also Published As

Publication number Publication date
EP2270417B1 (fr) 2016-11-30
ATE506593T1 (de) 2011-05-15
EP3104114B1 (fr) 2018-03-14
EP1813906A1 (fr) 2007-08-01
US8127681B2 (en) 2012-03-06
JP4521000B2 (ja) 2010-08-11
EP1813906B1 (fr) 2011-04-20
EP2187162B1 (fr) 2015-04-29
DE502006009342D1 (de) 2011-06-01
DE102006004036A1 (de) 2007-08-09
HUE032923T2 (hu) 2017-11-28
PL2270417T3 (pl) 2017-06-30
US20070187934A1 (en) 2007-08-16
MXPA06013611A (es) 2008-10-24
EP3104114A1 (fr) 2016-12-14
EP2270417A3 (fr) 2011-11-16
EP2187162A3 (fr) 2010-09-08
JP2007198724A (ja) 2007-08-09
ES2617504T3 (es) 2017-06-19
EP2270417A2 (fr) 2011-01-05

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